/* ══════════ EM-CPs Design System v3 — Professional Medical Grade ══════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html {
    scroll-padding-top: calc(20px + env(safe-area-inset-top, 20px));
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
    font-size: calc(16px * var(--type-scale, 1));
}

:root {
    --type-scale: 1;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --radius-full: 9999px;
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --space-2xl: 32px;
    --space-3xl: 40px;
    --touch-target: 44px;
    --transition-fast: 150ms;
    --transition-base: 220ms;
    --transition-smooth: 280ms;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Light Theme — neutral clinical surfaces (accent-agnostic) */
    --bg: #f5f8f7;
    --ink: #0f241e;
    --ink-soft: #4a635a;
    --line: #dce7e2;
    --line-subtle: #e9f0ec;
    --card: #ffffff;
    --card-elevated: #ffffff;
    /* Default accent: emerald (light) */
    --brand: #0b3d2e;
    --brand-2: #105944;
    --accent: #0f9d76;
    --accent-2: #2dd4a8;
    --accent-light: #e6f7f2;
    --accent-rgb: 15, 157, 118;
    --shadow-rgb: 16, 89, 68;
    --on-fill: #ffffff;
    --on-mark: #05241a;
    --mark-1: #2dd4a8;
    --mark-2: #0f9d76;
    --gold: #d97706;
    --gold-bg: #fffbeb;
    --critical: #dc2626;
    --critical-bg: #fef2f2;
    --critical-line: #fecaca;
    --emergent: #ea580c;
    --emergent-bg: #fff7ed;
    --emergent-line: #fed7aa;
    --common: #16a34a;
    --common-bg: #f0fdf4;
    --common-line: #bbf7d0;
    --topbar-bg: rgba(245, 248, 247, 0.88);
    --foot-bg: #edf3f0;
    --hover-line: #a7dfcc;
    --home-hover: #eef9f4;
    --ov-job-bg: linear-gradient(135deg, #f0fbf6 0%, #e8f6f0 100%);
    --ov-job-line: #bfe8d8;
    --rf-box-bg: #fff8f8;
    --rf-box-line: #fca5a5;
    --rf-mid-bg: #fff7ed;
    --rf-mid-ink: #c2410c;
    --pearls-bg: #f0fdf7;
    --pearls-line: #bbf7d0;
    --pitfalls-bg: #fffbeb;
    --pitfalls-line: #fde68a;
    --pitfalls-ink: #92400e;
    --shadow-sm: 0 1px 3px rgba(15, 36, 30, 0.06), 0 1px 2px rgba(15, 36, 30, 0.04);
    --shadow: 0 4px 12px rgba(15, 36, 30, 0.05), 0 1px 3px rgba(15, 36, 30, 0.04);
    --shadow-lg: 0 10px 28px rgba(15, 36, 30, 0.08), 0 4px 10px rgba(15, 36, 30, 0.05);
    --shadow-float: 0 16px 40px rgba(15, 36, 30, 0.14);
    --side-w: 268px;
    --grad-brand: linear-gradient(135deg, #0b3d2e 0%, #115c46 55%, #0f9d76 100%);
    --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    /* Sidebar — always dark, tinted per accent (emerald default) */
    --side-bg-1: #093326;
    --side-bg-2: #0c4232;
    --side-bg-3: #082a20;
    --side-ink: #eafaf3;
    --side-muted: #d1eee3;
    --side-sub: #9ccfbd;
    --side-label: #8acbb6;
    --side-note: #84beab;
    --side-scroll: #1a5e4a;
}

html[data-theme="dark"] {
    color-scheme: dark;
    --bg: #091310;
    --ink: #e8f5f0;
    --ink-soft: #98b6ab;
    --line: #1e352d;
    --line-subtle: #162923;
    --card: #11211b;
    --card-elevated: #162b23;
    --brand: #6ee7b7;
    --brand-2: #34d399;
    --accent: #2dd4a8;
    --accent-2: #10b981;
    --accent-light: rgba(var(--accent-rgb), 0.12);
    --accent-rgb: 45, 212, 168;
    --shadow-rgb: 45, 212, 168;
    --on-fill: #05241a;
    --gold: #fbbf24;
    --gold-bg: rgba(251, 191, 36, 0.12);
    --critical: #f87171;
    --critical-bg: #2d1414;
    --critical-line: #5c2222;
    --emergent: #fb923c;
    --emergent-bg: #2d1d12;
    --emergent-line: #5c381a;
    --common: #4ade80;
    --common-bg: #122818;
    --common-line: #225230;
    --topbar-bg: rgba(9, 19, 16, 0.88);
    --foot-bg: #0d1a15;
    --hover-line: #2d5c4e;
    --home-hover: #173027;
    --ov-job-bg: linear-gradient(135deg, #132b22 0%, #0f221b 100%);
    --ov-job-line: #244d3f;
    --rf-box-bg: #241313;
    --rf-box-line: #6b2828;
    --rf-mid-bg: #291c10;
    --rf-mid-ink: #fdba74;
    --pearls-bg: #122920;
    --pearls-line: #234f3e;
    --pitfalls-bg: #262010;
    --pitfalls-line: #54441e;
    --pitfalls-ink: #fde68a;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
    --shadow: 0 4px 14px rgba(0, 0, 0, 0.38), 0 1px 3px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5), 0 4px 12px rgba(0, 0, 0, 0.35);
    --shadow-float: 0 20px 48px rgba(0, 0, 0, 0.65);
    --grad-brand: linear-gradient(135deg, #093829 0%, #0d4a37 55%, #106e53 100%);
}

/* ══════════ Accent themes — user-selectable, light + dark ══════════
   Severity (critical/emergent/common), gold, pitfalls stay fixed for
   clinical meaning. Only brand/accent + tinted surfaces change. */

/* ——— Emerald (default green) explicit ——— */
html[data-accent="emerald"] {
    --brand: #0b3d2e; --brand-2: #105944; --accent: #0f9d76; --accent-2: #2dd4a8;
    --accent-light: #e6f7f2; --accent-rgb: 15, 157, 118; --shadow-rgb: 16, 89, 68;
    --on-fill: #ffffff; --on-mark: #05241a; --mark-1: #2dd4a8; --mark-2: #0f9d76;
    --bg: #f5f8f7; --ink: #0f241e; --ink-soft: #4a635a; --line: #dce7e2; --line-subtle: #e9f0ec;
    --topbar-bg: rgba(245, 248, 247, 0.88); --foot-bg: #edf3f0;
    --hover-line: #a7dfcc; --home-hover: #eef9f4;
    --ov-job-bg: linear-gradient(135deg, #f0fbf6 0%, #e8f6f0 100%); --ov-job-line: #bfe8d8;
    --grad-brand: linear-gradient(135deg, #0b3d2e 0%, #115c46 55%, #0f9d76 100%);
    --side-bg-1: #093326; --side-bg-2: #0c4232; --side-bg-3: #082a20;
    --side-muted: #d1eee3; --side-sub: #9ccfbd; --side-label: #8acbb6; --side-note: #84beab; --side-scroll: #1a5e4a;
}
html[data-theme="dark"][data-accent="emerald"] {
    --brand: #6ee7b7; --brand-2: #34d399; --accent: #2dd4a8; --accent-2: #10b981;
    --accent-light: rgba(var(--accent-rgb), 0.12); --accent-rgb: 45, 212, 168; --shadow-rgb: 45, 212, 168;
    --on-fill: #05241a;
    --bg: #091310; --ink: #e8f5f0; --ink-soft: #98b6ab; --line: #1e352d; --line-subtle: #162923;
    --card: #11211b; --card-elevated: #162b23;
    --topbar-bg: rgba(9, 19, 16, 0.88); --foot-bg: #0d1a15;
    --hover-line: #2d5c4e; --home-hover: #173027;
    --ov-job-bg: linear-gradient(135deg, #132b22 0%, #0f221b 100%); --ov-job-line: #244d3f;
    --grad-brand: linear-gradient(135deg, #093829 0%, #0d4a37 55%, #106e53 100%);
}

/* ——— Ocean (clinical blue) ——— */
html[data-accent="ocean"] {
    --brand: #0b2e5e; --brand-2: #1d4fa1; --accent: #2563eb; --accent-2: #60a5fa;
    --accent-light: #e8effe; --accent-rgb: 37, 99, 235; --shadow-rgb: 29, 79, 161;
    --on-fill: #ffffff; --on-mark: #081a38; --mark-1: #60a5fa; --mark-2: #2563eb;
    --bg: #f4f6fb; --ink: #0f1c33; --ink-soft: #4a5f7e; --line: #d9e1ee; --line-subtle: #e8edf5;
    --topbar-bg: rgba(244, 246, 251, 0.88); --foot-bg: #e9edf4;
    --hover-line: #a8c5f0; --home-hover: #eef4fe;
    --ov-job-bg: linear-gradient(135deg, #f0f5fd 0%, #e6effe 100%); --ov-job-line: #bfd4f5;
    --grad-brand: linear-gradient(135deg, #0b2e5e 0%, #1a4fa0 55%, #2563eb 100%);
    --side-bg-1: #0a2247; --side-bg-2: #12365f; --side-bg-3: #081a36;
    --side-muted: #d3e3f8; --side-sub: #a9c6ee; --side-label: #8fb4e8; --side-note: #7fa5d8; --side-scroll: #1e4a7a;
}
html[data-theme="dark"][data-accent="ocean"] {
    --brand: #93c5fd; --brand-2: #60a5fa; --accent: #60a5fa; --accent-2: #2563eb;
    --accent-light: rgba(96, 165, 250, 0.14); --accent-rgb: 96, 165, 250; --shadow-rgb: 96, 165, 250;
    --on-fill: #081a38;
    --bg: #0a111e; --ink: #e6eefb; --ink-soft: #93a7c4; --line: #1d2c46; --line-subtle: #141f33;
    --card: #101a2c; --card-elevated: #152238;
    --topbar-bg: rgba(10, 17, 30, 0.88); --foot-bg: #0c1424;
    --hover-line: #2a4f75; --home-hover: #152238;
    --ov-job-bg: linear-gradient(135deg, #12233a 0%, #0e1c2f 100%); --ov-job-line: #23405f;
    --grad-brand: linear-gradient(135deg, #0a2050 0%, #153a7d 55%, #1d4fb0 100%);
}

/* ——— Violet ——— */
html[data-accent="violet"] {
    --brand: #2e1a6b; --brand-2: #5b34c4; --accent: #7c3aed; --accent-2: #a78bfa;
    --accent-light: #efe9fe; --accent-rgb: 124, 58, 237; --shadow-rgb: 91, 52, 196;
    --on-fill: #ffffff; --on-mark: #1e1048; --mark-1: #a78bfa; --mark-2: #7c3aed;
    --bg: #f6f4fb; --ink: #1d1633; --ink-soft: #5c5178; --line: #e0d9ef; --line-subtle: #ebe7f5;
    --topbar-bg: rgba(246, 244, 251, 0.88); --foot-bg: #ece8f4;
    --hover-line: #c4b0f0; --home-hover: #f3effe;
    --ov-job-bg: linear-gradient(135deg, #f4f0fd 0%, #ece5fd 100%); --ov-job-line: #d3c4f5;
    --grad-brand: linear-gradient(135deg, #2e1a6b 0%, #5b34c4 55%, #7c3aed 100%);
    --side-bg-1: #1e1247; --side-bg-2: #2f1f6b; --side-bg-3: #190f3d;
    --side-muted: #ddd2f8; --side-sub: #bdaef0; --side-label: #ab94ec; --side-note: #9a86d6; --side-scroll: #4a3690;
}
html[data-theme="dark"][data-accent="violet"] {
    --brand: #c4b5fd; --brand-2: #a78bfa; --accent: #a78bfa; --accent-2: #7c3aed;
    --accent-light: rgba(167, 139, 250, 0.14); --accent-rgb: 167, 139, 250; --shadow-rgb: 167, 139, 250;
    --on-fill: #1e1048;
    --bg: #100e1c; --ink: #ece8fa; --ink-soft: #a89cc8; --line: #2a2342; --line-subtle: #1d1830;
    --card: #171426; --card-elevated: #1d1930;
    --topbar-bg: rgba(16, 14, 28, 0.88); --foot-bg: #120f1e;
    --hover-line: #4a3a7a; --home-hover: #221c38;
    --ov-job-bg: linear-gradient(135deg, #1e1836 0%, #181430 100%); --ov-job-line: #3d2f63;
    --grad-brand: linear-gradient(135deg, #21134f 0%, #3a2490 55%, #5b34c4 100%);
}

/* ——— Rose (crimson) ——— */
html[data-accent="rose"] {
    --brand: #5c0f22; --brand-2: #a51c3a; --accent: #e11d48; --accent-2: #fb7185;
    --accent-light: #fdeef1; --accent-rgb: 225, 29, 72; --shadow-rgb: 165, 28, 58;
    --on-fill: #ffffff; --on-mark: #3a0a15; --mark-1: #fb7185; --mark-2: #e11d48;
    --bg: #faf4f5; --ink: #331318; --ink-soft: #75505a; --line: #ecd9dd; --line-subtle: #f5e8ea;
    --topbar-bg: rgba(250, 244, 245, 0.88); --foot-bg: #f4e9eb;
    --hover-line: #f0a8b8; --home-hover: #fdf0f2;
    --ov-job-bg: linear-gradient(135deg, #fdf0f2 0%, #fbe6ea 100%); --ov-job-line: #f3bfc9;
    --grad-brand: linear-gradient(135deg, #5c0f22 0%, #a51c3a 55%, #e11d48 100%);
    --side-bg-1: #3d0c18; --side-bg-2: #5c1224; --side-bg-3: #330913;
    --side-muted: #f6d3db; --side-sub: #efa9bb; --side-label: #e89aae; --side-note: #d67f95; --side-scroll: #7a2a3d;
}
html[data-theme="dark"][data-accent="rose"] {
    --brand: #fecdd3; --brand-2: #fb7185; --accent: #fb7185; --accent-2: #e11d48;
    --accent-light: rgba(251, 113, 133, 0.14); --accent-rgb: 251, 113, 133; --shadow-rgb: 251, 113, 133;
    --on-fill: #3a0a15;
    --bg: #150e12; --ink: #fae8ec; --ink-soft: #c49aa4; --line: #3a2028; --line-subtle: #2a161c;
    --card: #1f1318; --card-elevated: #27181e;
    --topbar-bg: rgba(21, 14, 18, 0.88); --foot-bg: #190e12;
    --hover-line: #713040; --home-hover: #2f151b;
    --ov-job-bg: linear-gradient(135deg, #2b1419 0%, #231015 100%); --ov-job-line: #5c2430;
    --grad-brand: linear-gradient(135deg, #4a0e1c 0%, #7a162c 55%, #a51c3a 100%);
}

/* ——— Amber (warm orange) ——— */
html[data-accent="amber"] {
    --brand: #4d2405; --brand-2: #9a4a0a; --accent: #d97706; --accent-2: #fbbf24;
    --accent-light: #fef6e7; --accent-rgb: 217, 119, 6; --shadow-rgb: 154, 74, 10;
    --on-fill: #ffffff; --on-mark: #3a2205; --mark-1: #fbbf24; --mark-2: #d97706;
    --bg: #faf6ee; --ink: #33230e; --ink-soft: #74624a; --line: #e9ddc6; --line-subtle: #f4ecda;
    --topbar-bg: rgba(250, 246, 238, 0.88); --foot-bg: #f2ecdd;
    --hover-line: #e8c48a; --home-hover: #fef7ec;
    --ov-job-bg: linear-gradient(135deg, #fdf6e9 0%, #fbeed7 100%); --ov-job-line: #ecd3a8;
    --grad-brand: linear-gradient(135deg, #4d2405 0%, #9a4a0a 55%, #d97706 100%);
    --side-bg-1: #2f1c07; --side-bg-2: #4a2c0b; --side-bg-3: #261506;
    --side-muted: #f3e0c3; --side-sub: #e8c295; --side-label: #e0b27a; --side-note: #c99a5e; --side-scroll: #6b4a1f;
}
html[data-theme="dark"][data-accent="amber"] {
    --brand: #fde68a; --brand-2: #fbbf24; --accent: #fbbf24; --accent-2: #d97706;
    --accent-light: rgba(251, 191, 36, 0.14); --accent-rgb: 251, 191, 36; --shadow-rgb: 251, 191, 36;
    --on-fill: #3a2205;
    --bg: #14100a; --ink: #faf0dd; --ink-soft: #c2ab84; --line: #38301e; --line-subtle: #282117;
    --card: #1e1912; --card-elevated: #262017;
    --topbar-bg: rgba(20, 16, 10, 0.88); --foot-bg: #171208;
    --hover-line: #6b5430; --home-hover: #2a2010;
    --ov-job-bg: linear-gradient(135deg, #26200f 0%, #1f1a0c 100%); --ov-job-line: #57431c;
    --grad-brand: linear-gradient(135deg, #3a2205 0%, #6b3d0a 55%, #9a5a10 100%);
}

/* ——— Teal (cyan) ——— */
html[data-accent="teal"] {
    --brand: #07333b; --brand-2: #0c6a82; --accent: #0891b2; --accent-2: #22d3ee;
    --accent-light: #e6fbf8; --accent-rgb: 8, 145, 178; --shadow-rgb: 12, 106, 130;
    --on-fill: #ffffff; --on-mark: #052e33; --mark-1: #22d3ee; --mark-2: #0891b2;
    --bg: #f2f8f8; --ink: #0e2426; --ink-soft: #49686a; --line: #d5e5e6; --line-subtle: #e5efef;
    --topbar-bg: rgba(242, 248, 248, 0.88); --foot-bg: #e6efef;
    --hover-line: #8fd4e0; --home-hover: #eefafa;
    --ov-job-bg: linear-gradient(135deg, #effafa 0%, #e2f5f7 100%); --ov-job-line: #b3e0e8;
    --grad-brand: linear-gradient(135deg, #07333b 0%, #0e6b7a 55%, #0891b2 100%);
    --side-bg-1: #07333b; --side-bg-2: #0c4f5a; --side-bg-3: #052025;
    --side-muted: #c9eaf2; --side-sub: #93d0dc; --side-label: #7cc4d4; --side-note: #6aafbe; --side-scroll: #155e6a;
}
html[data-theme="dark"][data-accent="teal"] {
    --brand: #a5f3fc; --brand-2: #22d3ee; --accent: #22d3ee; --accent-2: #0891b2;
    --accent-light: rgba(34, 211, 238, 0.14); --accent-rgb: 34, 211, 238; --shadow-rgb: 34, 211, 238;
    --on-fill: #052e33;
    --bg: #0a1415; --ink: #e2f5f6; --ink-soft: #8fb4b6; --line: #1c3234; --line-subtle: #132626;
    --card: #0f1e20; --card-elevated: #142828;
    --topbar-bg: rgba(10, 20, 21, 0.88); --foot-bg: #0b1516;
    --hover-line: #2a5d5b; --home-hover: #102826;
    --ov-job-bg: linear-gradient(135deg, #102724 0%, #0c1f1e 100%); --ov-job-line: #1f4a48;
    --grad-brand: linear-gradient(135deg, #052e33 0%, #0b4a4f 55%, #0e6b7a 100%);
}

/* ─────────── Typography & Base Resets ─────────── */
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    line-height: 1.55;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    transition: background-color var(--transition-smooth) ease, color var(--transition-smooth) ease;
}

html[data-weight="bold"] {
    --font-weight-body: 500;
    --font-weight-title: 800;
}
html:not([data-weight="bold"]) {
    --font-weight-body: 400;
    --font-weight-title: 700;
}

body { font-weight: var(--font-weight-body, 400); }
strong, b, h1, h2, h3, h4, h5, h6, .brand-text strong, .btn, .chip, .home-btn {
    font-weight: var(--font-weight-title, 700);
}

button {
    font-family: inherit;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

a, button, select, input, textarea, [role="button"], [tabindex] {
    touch-action: manipulation;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 6px;
}
:focus:not(:focus-visible) {
    outline: none;
}

.skip-link {
    position: fixed;
    left: 16px;
    top: -80px;
    z-index: 600;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    background: var(--accent);
    color: var(--on-fill);
    font-weight: 800;
    text-decoration: none;
    font-size: 0.88rem;
    box-shadow: var(--shadow-lg);
    transition: top var(--transition-smooth) var(--ease-out);
}
.skip-link:focus { top: 16px; }

.noscript {
    margin: 20px;
    padding: 16px 20px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    color: var(--ink);
}

::selection { background: rgba(var(--accent-rgb), 0.32); color: inherit; }
::-moz-selection { background: rgba(var(--accent-rgb), 0.32); color: inherit; }

/* ─────────── Scrollbars (accent-tinted) ─────────── */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--hover-line);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg);
    background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

* { scrollbar-width: thin; scrollbar-color: var(--hover-line) transparent; }
html[data-theme="dark"] { scrollbar-color: var(--ov-job-line) transparent; }
html[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--ov-job-line);
    border-color: var(--bg);
}
html[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: var(--hover-line); }

/* ─────────── Sidebar (accent-tinted, always dark) ─────────── */
.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--side-w);
    background: linear-gradient(180deg, var(--side-bg-1) 0%, var(--side-bg-2) 50%, var(--side-bg-3) 100%);
    color: var(--side-ink);
    z-index: 110;
    display: flex;
    flex-direction: column;
    padding: max(18px, env(safe-area-inset-top, 18px)) 14px calc(16px + env(safe-area-inset-bottom, 16px));
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--side-scroll) transparent;
    -webkit-overflow-scrolling: touch;
    box-shadow: 2px 0 24px rgba(0, 0, 0, 0.28);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--side-scroll); border-radius: var(--radius-full); }

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 10px 18px;
    background: none;
    border: none;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
    width: 100%;
    min-height: var(--touch-target);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast) ease;
}
.brand:hover { background: rgba(255, 255, 255, 0.06); }
.brand:active { background: rgba(255, 255, 255, 0.1); }
.brand:hover .brand-mark { transform: scale(1.05) rotate(-2deg); }

.brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    flex: none;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--mark-1) 0%, var(--mark-2) 100%);
    color: var(--on-mark);
    font-weight: 900;
    font-size: 1.15rem;
    letter-spacing: -0.5px;
    box-shadow: 0 6px 18px rgba(var(--accent-rgb), 0.38);
    transition: transform var(--transition-smooth) var(--ease-spring), box-shadow var(--transition-base) ease;
}
.brand-text strong {
    display: block;
    font-size: 1.05rem;
    line-height: 1.2;
    color: #ffffff;
    letter-spacing: -0.01em;
}
.brand-text span {
    font-size: 0.72rem;
    color: var(--side-sub);
    line-height: 1.3;
    font-weight: 500;
}

.side-group { margin-bottom: 12px; }
.side-label {
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--side-label);
    padding: 8px 10px 4px;
    line-height: 1.4;
}
.side-list { display: flex; flex-direction: column; gap: 3px; }
.side-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: 10px;
    cursor: pointer;
    color: var(--side-muted);
    font-size: 0.86rem;
    font-weight: 600;
    border: 1px solid transparent;
    width: 100%;
    text-align: left;
    background: none;
    font-family: inherit;
    min-height: var(--touch-target);
    transition: background var(--transition-fast) ease, transform var(--transition-fast) ease, color var(--transition-fast) ease;
}
.side-item i.ico {
    font-style: normal;
    font-size: 1.05rem;
    width: 22px;
    text-align: center;
    flex-shrink: 0;
}
.side-item:hover {
    background: rgba(255, 255, 255, 0.09);
    color: #ffffff;
    transform: translateX(3px);
}
.side-item:active {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(1px);
}
.side-item.active {
    background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.24) 0%, rgba(var(--accent-rgb), 0.12) 100%);
    border-color: rgba(var(--accent-rgb), 0.5);
    color: #ffffff;
    font-weight: 700;
    box-shadow: inset 3px 0 0 var(--accent-2), 0 2px 8px rgba(0, 0, 0, 0.2);
}
.side-item.side-home {
    margin-bottom: 6px;
    color: #ffffff;
    border-color: rgba(var(--accent-rgb), 0.32);
    background: rgba(var(--accent-rgb), 0.14);
}

.side-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.side-btn {
    width: 100%;
    padding: 10px 14px;
    border-radius: 10px;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.07);
    color: var(--side-muted);
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 700;
    min-height: var(--touch-target);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: background var(--transition-fast) ease, border-color var(--transition-fast) ease, transform var(--transition-fast) ease;
}
.side-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.3);
}
.side-btn:active {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(0.98);
}
.install-btn {
    margin-bottom: 8px;
    border-color: rgba(var(--accent-rgb), 0.6);
    background: rgba(var(--accent-rgb), 0.18);
    color: #ffffff;
}
.install-btn:hover { background: rgba(var(--accent-rgb), 0.3); }

.side-note {
    font-size: 0.65rem;
    color: var(--side-note);
    margin-top: 12px;
    line-height: 1.5;
    text-align: center;
}

.side-backdrop {
    position: fixed;
    inset: 0;
    z-index: 105;
    background: rgba(6, 18, 14, 0.65);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-smooth) var(--ease-out);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.side-backdrop.show { opacity: 1; pointer-events: auto; }

/* ─────────── Main Layout ─────────── */
.main {
    margin-left: var(--side-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ─────────── Topbar ─────────── */
.topbar {
    position: sticky;
    top: 0;
    z-index: 90;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: max(10px, env(safe-area-inset-top, 10px)) 24px 10px;
    background: var(--topbar-bg);
    backdrop-filter: blur(18px) saturate(1.6);
    -webkit-backdrop-filter: blur(18px) saturate(1.6);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
    transition: background-color var(--transition-smooth) ease, border-color var(--transition-smooth) ease;
}

.burger { display: none; }
.tools-toggle {
    display: none;
    height: var(--touch-target);
    min-height: var(--touch-target);
    min-width: var(--touch-target);
    padding: 0 12px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    color: var(--brand-2);
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 800;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    gap: 6px;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.tools-toggle:hover {
    border-color: var(--accent);
    background: var(--home-hover);
    color: var(--brand-2);
}
.tools-toggle:active {
    transform: scale(0.96);
}
.tools-toggle[aria-expanded="true"] {
    background: var(--brand-2);
    color: #ffffff;
    border-color: var(--brand-2);
    box-shadow: 0 2px 8px rgba(var(--shadow-rgb), 0.25);
}
html[data-theme="dark"] .tools-toggle[aria-expanded="true"] {
    background: var(--accent);
    color: var(--on-fill);
    border-color: var(--accent);
    box-shadow: 0 2px 10px rgba(var(--accent-rgb), 0.3);
}

.topbar-tools {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    flex-wrap: wrap;
    justify-content: flex-end;
}

/* ─────────── General Buttons ─────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-family: inherit;
    font-weight: 700;
    cursor: pointer;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    color: var(--ink);
    min-height: var(--touch-target);
    padding: 0 16px;
    transition: background var(--transition-fast) ease,
                border-color var(--transition-fast) ease,
                color var(--transition-fast) ease,
                box-shadow var(--transition-fast) ease,
                transform var(--transition-fast) ease;
    -webkit-user-select: none;
    user-select: none;
    text-decoration: none;
    line-height: 1.2;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}
.btn:hover {
    border-color: var(--accent);
    background: var(--home-hover);
    color: var(--brand-2);
}
.btn:active { transform: scale(0.97); }
.btn:disabled, .btn[disabled] {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
    pointer-events: none;
}

/* Home & Utility Topbar Buttons */
.home-btn {
    flex: none;
    height: var(--touch-target);
    padding: 0 14px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--line);
    background: var(--card);
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--brand-2);
    cursor: pointer;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.home-btn:hover {
    border-color: var(--accent);
    background: var(--home-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}
.home-btn:active { transform: scale(0.96); }
.home-btn.on-home {
    background: var(--brand-2);
    color: #ffffff;
    border-color: var(--brand-2);
    box-shadow: 0 2px 8px rgba(var(--shadow-rgb), 0.25);
}
html[data-theme="dark"] .home-btn.on-home {
    background: var(--accent);
    color: var(--on-fill);
    border-color: var(--accent);
    box-shadow: 0 2px 10px rgba(var(--accent-rgb), 0.3);
}

.home-btn .header-icon {
    display: inline-block;
    font-size: 1.05rem;
    line-height: 1;
}
.home-btn .header-label { font-size: 0.82rem; }

.utility-btn { color: var(--ink); }

.icon-btn {
    border: 1.5px solid var(--line);
    background: var(--card);
    border-radius: var(--radius-md);
    width: var(--touch-target);
    height: var(--touch-target);
    font-size: 1.15rem;
    cursor: pointer;
    color: var(--ink);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.icon-btn:hover {
    border-color: var(--accent);
    background: var(--home-hover);
    color: var(--brand-2);
}
.icon-btn:active { transform: scale(0.94); }

/* Severity Filter Chips */
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
    border: 1.5px solid var(--line);
    background: var(--card);
    border-radius: var(--radius-full);
    padding: 6px 13px;
    font-family: inherit;
    font-size: 0.76rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--ink-soft);
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.chip:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
    border-color: var(--hover-line);
    color: var(--ink);
}
.chip:active { transform: scale(0.97); }
.chip.active {
    color: #ffffff;
    font-weight: 800;
    border-color: transparent;
}
.chip-all.active {
    background: var(--brand-2);
    box-shadow: 0 2px 8px rgba(var(--shadow-rgb), 0.25);
}
html[data-theme="dark"] .chip-all.active {
    background: var(--accent);
    color: var(--on-fill);
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.3);
}
.chip-critical.active {
    background: #b91c1c;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}
.chip-emergent.active {
    background: #c2410c;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(234, 88, 12, 0.3);
}
.chip-common.active {
    background: #15803d;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(22, 163, 74, 0.3);
}
html[data-theme="dark"] .chip-critical.active,
html[data-theme="dark"] .chip-emergent.active,
html[data-theme="dark"] .chip-common.active {
    /* Severity keeps fixed clinical meaning — neutral dark text on bright bg */
    color: #101613;
}
html[data-theme="dark"] .chip-critical.active { background: var(--critical); }
html[data-theme="dark"] .chip-emergent.active { background: var(--emergent); }
html[data-theme="dark"] .chip-common.active { background: var(--common); }

/* Reading Preference Tools */
.pref-tools {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: none;
}
.pref-btn {
    height: var(--touch-target);
    min-width: var(--touch-target);
    padding: 0 10px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--line);
    background: var(--card);
    font-family: inherit;
    font-size: 0.84rem;
    font-weight: 800;
    color: var(--ink);
    cursor: pointer;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.pref-btn:hover {
    border-color: var(--accent);
    background: var(--home-hover);
    color: var(--brand-2);
}
.pref-btn:active { transform: scale(0.94); }
.pref-btn[aria-pressed="true"] {
    background: var(--brand-2);
    color: #ffffff;
    border-color: var(--brand-2);
}
html[data-theme="dark"] .pref-btn[aria-pressed="true"] {
    background: var(--accent);
    color: var(--on-fill);
    border-color: var(--accent);
}
.pref-scale {
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--ink-soft);
    min-width: 2.8em;
    text-align: center;
}

/* ─────────── Accent color picker (user-selectable app theme) ─────────── */
.accent-tools {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: none;
    padding: 4px 6px 4px 10px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    box-shadow: var(--shadow-sm);
}
.accent-label {
    font-size: 0.68rem;
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-soft);
    white-space: nowrap;
}
.accent-dots { display: flex; align-items: center; gap: 4px; }
.accent-dot {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid transparent;
    background: var(--dot, var(--accent));
    cursor: pointer;
    flex: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.65), var(--shadow-sm);
    transition: transform var(--transition-fast) ease, border-color var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
    touch-action: manipulation;
}
.accent-dot:hover { transform: scale(1.12); border-color: var(--accent); }
.accent-dot:active { transform: scale(0.94); }
.accent-dot:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
.accent-dot[aria-pressed="true"] {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--card), 0 0 0 4px var(--accent), var(--shadow-sm);
    transform: scale(1.08);
}
html[data-theme="dark"] .accent-dot {
    box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.35), var(--shadow-sm);
}
html[data-theme="dark"] .accent-dot[aria-pressed="true"] {
    box-shadow: 0 0 0 2px var(--card), 0 0 0 4px var(--accent), var(--shadow-sm);
}

/* ─────────── Search Experience ─────────── */
.searchwrap {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    gap: 9px;
    background: var(--card);
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    padding: 6px 12px;
    max-width: 440px;
    min-height: var(--touch-target);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
}
.searchwrap:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.18), var(--shadow);
}
.search-ico {
    opacity: 0.6;
    font-size: 0.95rem;
    flex-shrink: 0;
}
#searchInput {
    border: none;
    outline: none;
    background: none;
    width: 100%;
    font-family: inherit;
    font-size: 0.88rem;
    color: var(--ink);
    min-width: 0;
    line-height: 1.4;
}
#searchInput::placeholder { color: var(--ink-soft); opacity: 0.8; }
#searchInput::-webkit-search-cancel-button { display: none; }

.search-clear-btn {
    border: 0;
    background: var(--bg);
    color: var(--ink-soft);
    border-radius: var(--radius-full);
    width: 32px;
    height: 32px;
    font-size: 0.7rem;
    font-weight: 800;
    cursor: pointer;
    display: grid;
    place-items: center;
    flex-shrink: 0;
    transition: all var(--transition-fast) ease;
}
.search-clear-btn:hover { background: var(--line); color: var(--ink); }
.search-clear-btn:active { transform: scale(0.9); }

.search-kbd {
    border: 1px solid var(--line);
    background: var(--bg);
    color: var(--ink-soft);
    border-radius: 4px;
    padding: 1px 6px;
    font-size: 0.68rem;
    font-weight: 700;
    font-family: inherit;
    flex-shrink: 0;
}

.results-pop {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-float);
    max-height: 390px;
    overflow-y: auto;
    z-index: 150;
    animation: popIn 0.18s var(--ease-out) both;
}
@keyframes popIn {
    from { opacity: 0; transform: translateY(-6px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.res-item {
    display: flex;
    width: 100%;
    padding: 12px 16px;
    cursor: pointer;
    border: 0;
    border-bottom: 1px solid var(--line-subtle);
    background: none;
    text-align: left;
    font: inherit;
    color: inherit;
    min-height: var(--touch-target);
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    transition: background var(--transition-fast) ease;
}
.res-item:last-child { border-bottom: none; }
.res-item:hover, .res-item.active {
    background: var(--home-hover);
}
.res-item .r-title {
    font-size: 0.88rem;
    font-weight: 800;
    color: var(--brand-2);
}
.res-item .r-sub {
    font-size: 0.74rem;
    color: var(--ink-soft);
    margin-top: 2px;
}
.res-item .r-tag {
    font-size: 0.64rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: var(--radius-full);
    background: var(--bg);
    border: 1px solid var(--line);
    color: var(--ink-soft);
    flex-shrink: 0;
}

/* ─────────── Stage & Foot ─────────── */
.stage {
    flex: 1;
    padding: var(--space-2xl) clamp(16px, 4vw, 48px) var(--space-3xl);
    outline: none;
    scroll-padding-top: calc(20px + env(safe-area-inset-top, 20px));
}
.foot {
    padding: var(--space-xl) clamp(16px, 4vw, 48px) var(--space-2xl);
    color: var(--ink-soft);
    font-size: 0.76rem;
    border-top: 1px solid var(--line);
    background: var(--foot-bg);
}
.foot p {
    max-width: 960px;
    line-height: 1.6;
}

/* ─────────── Toast Notification ─────────── */
.toast {
    position: fixed;
    bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--card);
    color: var(--ink);
    border: 1.5px solid var(--accent);
    font-size: 0.84rem;
    font-weight: 700;
    padding: 11px 22px;
    border-radius: var(--radius-full);
    z-index: 400;
    opacity: 0;
    transition: transform var(--transition-smooth) var(--ease-spring), opacity var(--transition-smooth) ease;
    box-shadow: var(--shadow-float);
    pointer-events: none;
    max-width: 90vw;
    text-align: center;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ─────────── Home Hero (accent gradient, neutral white text fits all accents) ─────────── */
.hero {
    background: var(--grad-brand);
    border-radius: var(--radius-xl);
    color: #ffffff;
    padding: var(--space-2xl) clamp(20px, 4.5vw, 48px);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    margin-bottom: var(--space-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}
.hero::after {
    content: '';
    position: absolute;
    right: -40px;
    top: -40px;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.35) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero h1 {
    font-size: clamp(1.5rem, 3.2vw, 2.2rem);
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: #ffffff;
}
.hero p {
    max-width: 780px;
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.86);
    font-size: 0.94rem;
    line-height: 1.55;
}
.hero-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 18px;
}
.hbadge {
    font-size: 0.74rem;
    font-weight: 700;
    padding: 6px 13px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
}

/* ─────────── Study Dashboard (Home) ─────────── */
.study-dashboard {
    margin: 0 0 var(--space-xl);
    padding: 20px 24px;
    border: 1.5px solid var(--ov-job-line);
    border-radius: var(--radius-lg);
    background: var(--ov-job-bg);
    display: flex;
    gap: 18px;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}
.study-kicker, .resus-kicker, .case-practice-head > span, .shift-sheet-head > div > span, .study-page-head > span {
    display: block;
    color: var(--accent);
    font-size: 0.67rem;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}
.study-dashboard h2 {
    font-size: 1.1rem;
    margin-top: 2px;
    color: var(--ink);
}
.study-dashboard p {
    margin-top: 3px;
    color: var(--ink-soft);
    font-size: 0.82rem;
    max-width: 580px;
}
.study-stats {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}
.study-stat {
    min-width: 86px;
    padding: 9px 12px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    color: var(--ink);
    font: inherit;
    cursor: pointer;
    text-align: center;
    min-height: var(--touch-target);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.study-stat:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}
.study-stat:active { transform: scale(0.97); }
.study-stat strong {
    color: var(--brand-2);
    font-size: 1.1rem;
    line-height: 1.2;
}
.study-stat span {
    color: var(--ink-soft);
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}
.study-stat.accent {
    background: var(--brand-2);
    border-color: var(--brand-2);
    box-shadow: 0 4px 12px rgba(var(--shadow-rgb), 0.25);
}
.study-stat.accent strong, .study-stat.accent span { color: #ffffff; }
html[data-theme="dark"] .study-stat.accent {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 4px 14px rgba(var(--accent-rgb), 0.3);
}
html[data-theme="dark"] .study-stat.accent strong,
html[data-theme="dark"] .study-stat.accent span { color: var(--on-fill); }

/* ─────────── Patient Context Chips ─────────── */
.patient-filter {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 22px;
    overflow-x: auto;
    padding: 4px 0 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.patient-filter::-webkit-scrollbar { display: none; }
.patient-filter > span {
    color: var(--ink-soft);
    font-size: 0.7rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
    padding-right: 4px;
}
.patient-chip {
    flex: none;
    padding: 7px 14px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-full);
    background: var(--card);
    color: var(--ink-soft);
    font: inherit;
    font-size: 0.76rem;
    font-weight: 700;
    cursor: pointer;
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.patient-chip:hover {
    border-color: var(--hover-line);
    color: var(--ink);
    transform: translateY(-1px);
}
.patient-chip:active { transform: scale(0.97); }
.patient-chip.active {
    background: var(--brand-2);
    border-color: var(--brand-2);
    color: #ffffff;
    font-weight: 800;
    box-shadow: 0 2px 8px rgba(var(--shadow-rgb), 0.25);
}
html[data-theme="dark"] .patient-chip.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--on-fill);
}

/* ─────────── Home Groups & Cards ─────────── */
.home-group { margin-bottom: var(--space-2xl); }
.group-title {
    font-size: 0.8rem;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-soft);
    margin: 6px 2px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    line-height: 1.4;
}
.group-title span {
    font-size: 0.7rem;
    letter-spacing: 0;
    font-weight: 800;
    color: var(--brand-2);
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-full);
    padding: 2px 9px;
}
.empty-filter {
    color: var(--ink-soft);
    padding: 20px 4px;
    font-size: 0.9rem;
}
.cp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 16px;
}

.cp-card {
    background: var(--card);
    border: 1.5px solid var(--line);
    border-radius: var(--radius-xl);
    padding: 22px;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    width: 100%;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-smooth) var(--ease-out),
                box-shadow var(--transition-smooth) ease,
                border-color var(--transition-smooth) ease;
    min-height: var(--touch-target);
    display: flex;
    flex-direction: column;
    will-change: transform;
    contain: layout style;
}
.cp-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--grad-brand);
    opacity: 0;
    transition: opacity var(--transition-smooth) ease;
}
.cp-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--hover-line);
}
.cp-card:hover::before { opacity: 1; }
.cp-card:active { transform: translateY(-1px) scale(0.99); }
.cp-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.cp-card .cp-ico {
    font-size: 2rem;
    line-height: 1;
    margin-bottom: 6px;
}
.cp-card h3 {
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    line-height: 1.3;
    color: var(--ink);
}
.cp-card p {
    font-size: 0.8rem;
    color: var(--ink-soft);
    margin-top: 4px;
    line-height: 1.45;
    flex: 1;
}
.cp-card .cp-count {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 0.68rem;
    font-weight: 800;
    background: var(--bg);
    border: 1px solid var(--line);
    color: var(--ink-soft);
    border-radius: var(--radius-full);
    padding: 3px 9px;
}
.cp-reviewed {
    display: inline-block;
    margin-top: 10px;
    color: var(--brand-2);
    font-size: 0.7rem;
    font-weight: 800;
}
.cp-saved {
    display: inline-block;
    margin: 8px 0 0;
    color: var(--gold);
    font-size: 0.7rem;
    font-weight: 800;
}

/* ─────────── Presentation Hero ─────────── */
.cp-hero {
    border-radius: var(--radius-xl);
    padding: 28px clamp(20px, 3.5vw, 40px);
    margin-bottom: var(--space-lg);
    background: var(--grad-brand);
    color: #ffffff;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}
.cp-hero .cp-ico-lg { font-size: 2.6rem; line-height: 1; margin-bottom: 8px; }
.cp-hero h1 {
    font-size: clamp(1.45rem, 2.8vw, 2rem);
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: #ffffff;
}
.cp-hero .tag {
    color: rgba(255, 255, 255, 0.86);
    font-size: 0.92rem;
    margin-top: 4px;
    line-height: 1.45;
}
.back-btn {
    min-height: var(--touch-target);
    padding: 8px 16px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    color: var(--brand-2);
    font: inherit;
    font-size: 0.8rem;
    font-weight: 800;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.back-btn:hover {
    border-color: var(--accent);
    background: var(--home-hover);
    transform: translateY(-1px);
}
.back-btn:active { transform: scale(0.96); }

.cp-hero .back-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.16);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: var(--radius-full);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.cp-hero .back-btn:hover {
    background: rgba(255, 255, 255, 0.28);
}

/* ─────────── Fast Case Orientation Rail ─────────── */
.case-rail {
    display: grid;
    grid-template-columns: minmax(190px, 0.55fr) minmax(0, 1.9fr);
    gap: 14px;
    align-items: center;
    margin: 0 0 var(--space-lg);
    padding: 16px 20px;
    border: 1.5px solid var(--ov-job-line);
    border-radius: var(--radius-lg);
    background: var(--ov-job-bg);
    box-shadow: var(--shadow-sm);
}
.case-rail-title {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--brand-2);
}
.case-rail-title > span {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-md);
    background: rgba(var(--accent-rgb), 0.16);
    font-size: 1.1rem;
    flex-shrink: 0;
}
.case-rail-title strong {
    display: block;
    font-size: 0.92rem;
    line-height: 1.3;
    color: var(--ink);
}
.case-rail-title small {
    display: block;
    margin-top: 1px;
    color: var(--ink-soft);
    font-size: 0.72rem;
}
.case-steps {
    display: flex;
    gap: 8px;
    list-style: none;
}
.case-steps li {
    flex: 1;
    min-width: 0;
    font-size: 0.76rem;
    line-height: 1.4;
    color: var(--ink);
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.4);
    border: 1px solid rgba(0, 0, 0, 0.04);
}
html[data-theme="dark"] .case-steps li {
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.06);
}
.case-steps li > span {
    display: inline-grid;
    place-items: center;
    width: 18px;
    height: 18px;
    margin-right: 5px;
    border-radius: var(--radius-full);
    background: var(--brand-2);
    color: #ffffff;
    font-size: 0.64rem;
    font-weight: 900;
    vertical-align: top;
}
html[data-theme="dark"] .case-steps li > span {
    background: var(--accent);
    color: var(--on-fill);
}
.case-actions {
    grid-column: 2;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-start;
}
.case-action {
    border: 1.5px solid var(--ov-job-line);
    background: var(--card);
    color: var(--brand-2);
    border-radius: var(--radius-full);
    padding: 6px 12px;
    font: inherit;
    font-size: 0.74rem;
    font-weight: 800;
    cursor: pointer;
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.case-action:hover {
    border-color: var(--accent);
    background: var(--home-hover);
    transform: translateY(-1px);
}
.case-action:active { transform: scale(0.96); }
.case-action.primary {
    background: var(--brand-2);
    border-color: var(--brand-2);
    color: #ffffff;
}
html[data-theme="dark"] .case-action.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--on-fill);
}

/* ─────────── Quick Cards (Resus, Pivots, Plan, Loop) ─────────── */
.resus-card, .management-pivots, .personal-plan, .learning-loop {
    margin: 0 0 var(--space-lg);
    padding: 20px 24px;
    border-radius: var(--radius-lg);
    background: var(--card);
    border: 1.5px solid var(--line);
    box-shadow: var(--shadow);
}
.resus-card { border-left: 5px solid var(--gold); }
.resus-card h2, .management-pivots h2, .personal-plan h2, .learning-head h2 {
    margin-top: 2px;
    font-size: 1.05rem;
    color: var(--ink);
}
.resus-card > div > p, .personal-plan > div > p {
    margin-top: 4px;
    font-size: 0.8rem;
    color: var(--ink-soft);
    line-height: 1.45;
}
.resus-grid, .pivot-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 14px;
}
.resus-grid > div, .pivot-grid > div {
    padding: 13px 15px;
    border-radius: var(--radius-md);
    background: var(--bg);
    border: 1px solid var(--line);
}
.resus-grid strong, .pivot-grid span {
    display: block;
    color: var(--brand-2);
    font-size: 0.7rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.resus-grid p, .pivot-grid p {
    margin-top: 5px;
    font-size: 0.78rem;
    line-height: 1.5;
    color: var(--ink);
}

.pivot-title { display: flex; gap: 12px; align-items: center; }
.pivot-title > span {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: grid;
    place-items: center;
    background: rgba(var(--accent-rgb), 0.16);
    color: var(--brand-2);
    font-weight: 900;
    font-size: 1.1rem;
}
.pivot-title p { color: var(--ink-soft); font-size: 0.78rem; }

.personal-plan {
    background: var(--ov-job-bg);
    border-color: var(--ov-job-line);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px 20px;
}
.personal-controls {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
}
.save-topic {
    padding: 8px 14px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    color: var(--ink);
    font: inherit;
    font-size: 0.76rem;
    font-weight: 800;
    cursor: pointer;
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.save-topic:hover { border-color: var(--accent); }
.save-topic:active { transform: scale(0.97); }
.save-topic.active {
    color: #854d0e;
    background: var(--gold-bg);
    border-color: var(--gold);
}
html[data-theme="dark"] .save-topic.active { color: #fbbf24; }

.review-status, #noteStatus {
    color: var(--ink-soft);
    font-size: 0.7rem;
    font-weight: 700;
}
.personal-plan label, .personal-plan textarea, .note-actions { grid-column: 1 / -1; }
.personal-plan label {
    margin-top: 2px;
    color: var(--ink-soft);
    font-size: 0.72rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.personal-plan textarea {
    width: 100%;
    resize: vertical;
    padding: 12px 14px;
    border: 1.5px solid var(--ov-job-line);
    border-radius: var(--radius-md);
    background: var(--card);
    color: var(--ink);
    font: inherit;
    font-size: 0.84rem;
    transition: border-color var(--transition-fast) ease;
}
.personal-plan textarea:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.18);
}
.note-actions { display: flex; align-items: center; gap: 10px; }

/* ─────────── Learning Loop / Rapid Recall ─────────── */
.learning-head {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 16px;
}
.learning-head p {
    max-width: 700px;
    margin-top: 4px;
    color: var(--ink-soft);
    font-size: 0.82rem;
    line-height: 1.45;
}
.review-btn {
    flex: none;
    border: 1.5px solid var(--ov-job-line);
    border-radius: var(--radius-full);
    background: var(--card);
    color: var(--brand-2);
    padding: 8px 16px;
    font: inherit;
    font-size: 0.76rem;
    font-weight: 900;
    cursor: pointer;
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.review-btn:hover { border-color: var(--accent); }
.review-btn:active { transform: scale(0.96); }
.review-btn[aria-pressed="true"] {
    border-color: var(--brand-2);
    background: var(--brand-2);
    color: #ffffff;
}
html[data-theme="dark"] .review-btn[aria-pressed="true"] {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--on-fill);
}

.recall-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.recall-card {
    padding: 15px 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--bg);
}
.recall-card > span {
    display: block;
    color: var(--accent);
    font-size: 0.66rem;
    font-weight: 900;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.recall-card p {
    min-height: 2.7em;
    margin: 6px 0 10px;
    color: var(--ink);
    font-size: 0.84rem;
    line-height: 1.45;
}
.reveal-btn {
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    color: var(--brand-2);
    padding: 7px 12px;
    font: inherit;
    font-size: 0.74rem;
    font-weight: 800;
    cursor: pointer;
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.reveal-btn:hover { border-color: var(--accent); background: var(--home-hover); }
.reveal-btn:active { transform: scale(0.96); }
.reveal-answer {
    margin-top: 10px;
    padding: 11px 13px;
    border-left: 3px solid var(--accent);
    border-radius: 8px;
    background: var(--ov-job-bg);
    color: var(--ink);
    font-size: 0.82rem;
    line-height: 1.5;
    animation: fadeIn 0.2s var(--ease-out) both;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─────────── Section Cards (Collapsible Accordions) ─────────── */
.section-card {
    background: var(--card);
    border: 1.5px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 18px;
    overflow: hidden;
    scroll-margin-top: calc(20px + env(safe-area-inset-top, 20px));
    contain: layout style;
    transition: border-color var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
}
.sec-head {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 16px 22px;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.98rem;
    font-weight: 800;
    color: var(--ink);
    text-align: left;
    min-height: var(--touch-target);
    transition: background var(--transition-fast) ease;
}
.sec-head:hover { background: var(--bg); }
.sec-head .sec-ico {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-md);
    display: grid;
    place-items: center;
    background: rgba(var(--accent-rgb), 0.14);
    font-size: 1.05rem;
    flex-shrink: 0;
}
.sec-head .arrow {
    margin-left: auto;
    transition: transform var(--transition-smooth) var(--ease-out);
    color: var(--ink-soft);
    font-size: 0.82rem;
}
.section-card.closed .arrow { transform: rotate(-90deg); }
.sec-body { padding: 4px 22px 20px; }
.section-card.closed .sec-body { display: none; }
.section-card.section-focus,
.ecg-pattern.section-focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.2), var(--shadow-lg);
}

.sec-body ul { list-style: none; }
.sec-body > ul > li {
    padding: 8px 0 8px 24px;
    position: relative;
    font-size: 0.88rem;
    border-bottom: 1px dashed var(--line);
    line-height: 1.55;
}
.sec-body > ul > li:last-child { border-bottom: none; }
.sec-body > ul > li::before {
    content: '▸';
    position: absolute;
    left: 4px;
    color: var(--accent);
    font-weight: 800;
}
.sec-body strong { color: var(--brand-2); }
.plain-list li {
    padding: 6px 0 6px 22px;
    position: relative;
    font-size: 0.82rem;
    border-bottom: 1px dashed var(--line);
    list-style: none;
    line-height: 1.5;
}
.plain-list li:last-child { border-bottom: none; }
.plain-list li::before {
    content: '▸';
    position: absolute;
    left: 4px;
    color: var(--accent);
    font-weight: 800;
}

/* ─────────── Overview (How to Think) ─────────── */
.ov { padding: 4px 0 2px; }
.ov-job {
    background: var(--ov-job-bg);
    border: 1px solid var(--ov-job-line);
    border-left: 5px solid var(--accent);
    border-radius: var(--radius-lg);
    padding: 16px 18px;
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: -0.015em;
    color: var(--brand-2);
    line-height: 1.4;
    margin-bottom: 16px;
}
.ov-kicker {
    display: block;
    font-size: 0.65rem;
    font-weight: 900;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 4px;
}
.ov-steps {
    list-style: none;
    display: grid;
    gap: 9px;
    margin: 0 0 16px;
}
.ov-steps li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 11px 14px;
}
.ov-n {
    flex: none;
    width: 26px;
    height: 26px;
    border-radius: var(--radius-md);
    display: grid;
    place-items: center;
    background: var(--grad-brand);
    color: #ffffff;
    font-size: 0.76rem;
    font-weight: 800;
}
.ov-s {
    font-size: 0.88rem;
    line-height: 1.5;
    padding-top: 2px;
    color: var(--ink);
}
.ov-prose p {
    font-size: 0.88rem;
    color: var(--ink-soft);
    line-height: 1.6;
}
.ov-prose p + p { margin-top: 8px; }

/* ─────────── Don’t Miss DX Cards ─────────── */
.dx-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 14px;
}
.dx-card {
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    padding: 15px 17px;
    border-left-width: 5px;
    background: var(--card);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-smooth) var(--ease-out),
                box-shadow var(--transition-smooth) ease;
}
.dx-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}
.dx-card.sev-critical {
    border-left-color: var(--critical);
    background: var(--critical-bg);
}
.dx-card.sev-emergent {
    border-left-color: var(--emergent);
    background: var(--emergent-bg);
}
.dx-card.sev-common {
    border-left-color: var(--common);
    background: var(--common-bg);
}
.dx-card h4 {
    font-size: 0.94rem;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    line-height: 1.3;
}
.dx-card.sev-critical h4 { color: var(--critical); }
.dx-card.sev-emergent h4 { color: var(--emergent); }
.dx-card.sev-common h4 { color: var(--common); }
.dx-card .sev-tag {
    font-size: 0.6rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    color: #ffffff;
}
.dx-card.sev-critical .sev-tag { background: var(--critical); }
.dx-card.sev-emergent .sev-tag { background: var(--emergent); }
.dx-card.sev-common .sev-tag { background: var(--common); }
.dx-card .dx-key {
    margin-top: 8px;
    font-size: 0.82rem;
    color: var(--ink);
    line-height: 1.45;
}

/* ─────────── Clusters & Workup ─────────── */
.cluster-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 12px;
}
.cluster {
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 13px 15px;
}
.cluster h4 {
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brand-2);
    margin-bottom: 6px;
}
.cluster p {
    font-size: 0.84rem;
    line-height: 1.5;
    color: var(--ink);
}

.wu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}
.wu-col {
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 14px 16px;
}
.wu-col h4 {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--brand-2);
    margin-bottom: 8px;
}
.wu-col ul { list-style: none; }
.wu-col li {
    font-size: 0.82rem;
    padding: 5px 0 5px 18px;
    position: relative;
    line-height: 1.5;
}
.wu-col li::before {
    content: '•';
    position: absolute;
    left: 4px;
    color: var(--accent);
    font-weight: 900;
}

/* ─────────── Interactive Red Flag Checklist ─────────── */
.rf-box {
    background: var(--rf-box-bg);
    border: 1.5px dashed var(--rf-box-line);
    border-radius: var(--radius-md);
    padding: 18px;
}
.rf-tools {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin: -2px 0 10px;
}
.rf-clear {
    border: 1.5px solid var(--rf-box-line);
    border-radius: var(--radius-full);
    background: var(--card);
    color: var(--ink-soft);
    padding: 5px 12px;
    font: inherit;
    font-size: 0.72rem;
    font-weight: 800;
    cursor: pointer;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.rf-clear:hover {
    border-color: var(--critical);
    color: var(--critical);
    background: var(--critical-bg);
}
.rf-clear:active { transform: scale(0.96); }

.rf-banner {
    display: none;
    margin-bottom: 14px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.86rem;
    font-weight: 800;
    animation: fadeIn 0.25s var(--ease-out) both;
}
.rf-banner.show { display: block; }
.rf-banner.level-high {
    background: var(--critical);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
}
.rf-banner.level-mid {
    background: var(--rf-mid-bg);
    color: var(--rf-mid-ink);
    border: 1px solid var(--rf-box-line);
}
.rf-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 8px 8px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast) ease;
}
.rf-item:hover { background: rgba(220, 38, 38, 0.06); }
.rf-item input {
    width: 20px;
    height: 20px;
    accent-color: var(--critical);
    margin-top: 2px;
    cursor: pointer;
    flex-shrink: 0;
}
.rf-item span {
    font-size: 0.86rem;
    line-height: 1.45;
    color: var(--ink);
}
.rf-item:has(input:checked) { background: rgba(220, 38, 38, 0.1); }
.rf-item input:checked + span {
    color: var(--critical);
    font-weight: 800;
}
.rf-progress {
    height: 8px;
    background: #fee2e2;
    border-radius: var(--radius-full);
    margin-top: 14px;
    overflow: hidden;
}
html[data-theme="dark"] .rf-progress { background: #3d1c1c; }
.rf-progress i {
    display: block;
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #f87171, var(--critical));
    border-radius: var(--radius-full);
    transition: width var(--transition-smooth) var(--ease-out);
}

/* ─────────── Disposition ─────────── */
.disp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}
.disp-col {
    border-radius: var(--radius-md);
    padding: 15px 17px;
    border: 1.5px solid var(--line);
    box-shadow: var(--shadow-sm);
}
.disp-col h4 {
    font-size: 0.82rem;
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.disp-col.d-discharge { background: var(--common-bg); border-color: var(--common-line); }
.disp-col.d-discharge h4 { color: var(--common); }
.disp-col.d-admit { background: var(--emergent-bg); border-color: var(--emergent-line); }
.disp-col.d-admit h4 { color: var(--emergent); }
.disp-col.d-icu { background: var(--critical-bg); border-color: var(--critical-line); }
.disp-col.d-icu h4 { color: var(--critical); }
.disp-col ul { list-style: none; }
.disp-col li {
    font-size: 0.82rem;
    padding: 4px 0 4px 16px;
    position: relative;
    line-height: 1.5;
    color: var(--ink);
}
.disp-col li::before {
    content: '›';
    position: absolute;
    left: 4px;
    font-weight: 900;
    color: var(--ink-soft);
}

/* ─────────── Pearls & Pitfalls ─────────── */
.pp-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.pp-box {
    border-radius: var(--radius-md);
    padding: 16px 18px;
    box-shadow: var(--shadow-sm);
}
.pp-box h4 {
    font-size: 0.88rem;
    margin-bottom: 8px;
}
.pp-box.pearls {
    background: var(--pearls-bg);
    border: 1.5px solid var(--pearls-line);
}
.pp-box.pearls h4 { color: var(--brand-2); }
.pp-box.pitfalls {
    background: var(--pitfalls-bg);
    border: 1.5px solid var(--pitfalls-line);
}
.pp-box.pitfalls h4 { color: var(--pitfalls-ink); }
.pp-box li {
    font-size: 0.82rem;
    line-height: 1.55;
    color: var(--ink);
}

.refs { font-size: 0.76rem; color: var(--ink-soft); }
.refs li { border-bottom: none !important; padding: 4px 0 4px 24px !important; }
.refs li::before { content: '📘' !important; }

/* ─────────── Related & Pagers ─────────── */
.related { display: flex; flex-wrap: wrap; gap: 8px; padding: 6px 0 4px; }
.related-chip {
    border: 1.5px solid var(--line);
    background: var(--card);
    border-radius: var(--radius-full);
    padding: 7px 14px;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--brand-2);
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.related-chip:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
    border-color: var(--hover-line);
}
.related-chip:active { transform: scale(0.97); }

/* ─────────── ECG from scratch ─────────── */
.ecg-entry {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    margin: 0 0 var(--space-lg);
    padding: 16px 18px;
    border: 1.5px solid var(--ov-job-line);
    border-radius: var(--radius-xl);
    background: var(--ov-job-bg);
    color: var(--ink);
    font-family: inherit;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast) ease, box-shadow var(--transition-fast) ease, border-color var(--transition-fast) ease;
}
.ecg-entry:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
    border-color: var(--accent);
}
.ecg-entry:active { transform: scale(0.99); }
.ecg-entry-ico {
    flex: none;
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-md);
    background: var(--grad-brand);
    font-size: 1.25rem;
}
.ecg-entry span:not(.ecg-entry-ico) { flex: 1; min-width: 0; }
.ecg-entry strong {
    display: block;
    font-size: 0.95rem;
    color: var(--brand-2);
}
.ecg-entry small {
    display: block;
    margin-top: 2px;
    font-size: 0.76rem;
    color: var(--ink-soft);
}
.ecg-entry b { color: var(--accent); font-size: 0.9rem; }

.ecg-subhead {
    margin-top: 8px;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.45;
    max-width: 46rem;
}
.ecg-kicker {
    font-size: 0.68rem;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 4px 0 10px;
}
.ecg-step-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 var(--space-lg);
}
.ecg-step-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 40px;
    padding: 6px 12px 6px 8px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-full);
    background: var(--card);
    color: var(--ink);
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}
.ecg-step-chip span {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--grad-brand);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 800;
}
.ecg-step-chip:hover { border-color: var(--accent); background: var(--home-hover); }

.ecg-killers {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 8px;
    margin: 0 0 var(--space-lg);
}
.ecg-killer {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    min-height: var(--touch-target);
    padding: 10px 12px;
    border: 1.5px solid var(--critical-line);
    border-left-width: 4px;
    border-radius: var(--radius-md);
    background: var(--critical-bg);
    color: var(--ink);
    font-family: inherit;
    cursor: pointer;
    text-align: left;
}
.ecg-killer strong { font-size: 0.78rem; line-height: 1.3; }
.ecg-killer small { font-size: 0.68rem; color: var(--ink-soft); }
.ecg-killer:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }

.ecg-summary {
    font-size: 0.88rem;
    color: var(--ink-soft);
    margin: 0 0 10px;
    line-height: 1.5;
}
.ecg-details { list-style: none; }
.ecg-details > li.ecg-sub {
    padding-left: 36px;
    font-size: 0.82rem;
    color: var(--ink);
}
.ecg-details > li.ecg-sub::before { content: '–'; color: var(--ink-soft); }
.ecg-pp { margin-top: 12px; }
.ecg-pp p { font-size: 0.82rem; line-height: 1.55; color: var(--ink); }

.ecg-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 14px;
}
.ecg-pattern-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 14px;
}
.ecg-pattern {
    border: 1.5px solid var(--line);
    border-left-width: 5px;
    border-radius: var(--radius-md);
    padding: 14px 16px 16px;
    background: var(--card);
    box-shadow: var(--shadow-sm);
}
.ecg-pattern.sev-critical { border-left-color: var(--critical); }
.ecg-pattern.sev-emergent { border-left-color: var(--emergent); }
.ecg-pattern.sev-common { border-left-color: var(--common); }
.ecg-pattern header {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
}
.ecg-pattern h3 {
    font-size: 0.95rem;
    line-height: 1.3;
    color: var(--ink);
}
.ecg-tagline {
    font-size: 0.76rem;
    color: var(--ink-soft);
    margin: 4px 0 10px;
}
.ecg-pattern p, .ecg-action, .ecg-caution, .ecg-leads {
    font-size: 0.8rem;
    line-height: 1.5;
    margin-top: 8px;
    color: var(--ink);
}
.ecg-cat {
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
}
.ecg-action {
    padding: 10px 12px;
    border-radius: var(--radius-md);
    background: var(--accent-light);
    border: 1px solid var(--ov-job-line);
}
.ecg-caution {
    padding: 8px 12px;
    border-radius: var(--radius-md);
    background: var(--pitfalls-bg);
    border: 1px solid var(--pitfalls-line);
    color: var(--pitfalls-ink);
}

.pager {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    margin-top: 14px;
    flex-wrap: wrap;
}
.pager-btn {
    border: 1.5px solid var(--line);
    background: var(--card);
    border-radius: var(--radius-md);
    padding: 11px 18px;
    font-family: inherit;
    font-size: 0.84rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--ink);
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.pager-btn:hover {
    border-color: var(--hover-line);
    background: var(--home-hover);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}
.pager-btn:active { transform: scale(0.97); }

/* ─────────── Study Page & Case Practice ─────────── */
.study-tabs {
    display: flex;
    gap: 8px;
    margin: 0 0 16px;
    border-bottom: 1.5px solid var(--line);
}
.study-tabs button {
    padding: 10px 14px;
    border: 0;
    border-bottom: 3px solid transparent;
    background: transparent;
    color: var(--ink-soft);
    font: inherit;
    font-size: 0.84rem;
    font-weight: 800;
    cursor: pointer;
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast) ease;
}
.study-tabs button:hover { color: var(--ink); }
.study-tabs button.active {
    border-color: var(--accent);
    color: var(--brand-2);
}
.study-tabs span {
    display: inline-grid;
    place-items: center;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    border-radius: var(--radius-full);
    background: var(--critical);
    color: #ffffff;
    font-size: 0.65rem;
    font-weight: 900;
}

.study-page, .case-practice {
    max-width: 920px;
    padding: clamp(20px, 3.5vw, 36px);
    border: 1.5px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--card);
    box-shadow: var(--shadow);
}
.study-page-head .back-btn { margin-bottom: 18px; }
.study-page-head h1 { margin-top: 4px; font-size: clamp(1.4rem, 3vw, 1.9rem); color: var(--ink); }

.study-topic-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 12px;
    margin-top: 24px;
}
.study-topic {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--bg);
    color: var(--ink);
    font: inherit;
    text-align: left;
    cursor: pointer;
    width: 100%;
    min-height: var(--touch-target);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.study-topic:hover {
    border-color: var(--accent);
    background: var(--home-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}
.study-topic:active { transform: scale(0.98); }
.study-topic > span { font-size: 1.3rem; flex-shrink: 0; }
.study-topic div { flex: 1; min-width: 0; }
.study-topic strong { font-size: 0.86rem; display: block; color: var(--ink); }
.study-topic small { margin-top: 2px; color: var(--ink-soft); font-size: 0.7rem; display: block; }
.study-topic b { color: var(--accent); font-size: 1.1rem; }
.study-empty {
    margin-top: 24px;
    padding: 24px;
    border-radius: var(--radius-md);
    background: var(--bg);
    color: var(--ink-soft);
    font-size: 0.86rem;
    text-align: center;
}

.case-practice-head h2 {
    margin-top: 4px;
    font-size: clamp(1.4rem, 3vw, 1.85rem);
    color: var(--ink);
}
.case-practice-head p { margin-top: 6px; color: var(--ink-soft); font-size: 0.84rem; }
.case-prompt, .case-answer {
    margin-top: 20px;
    padding: 16px 18px;
    border-radius: var(--radius-md);
    background: var(--ov-job-bg);
    border: 1.5px solid var(--ov-job-line);
}
.case-prompt strong, .case-answer strong {
    color: var(--brand-2);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
}
.case-prompt p, .case-answer p { margin-top: 6px; font-size: 0.86rem; line-height: 1.55; }

.quiz-question {
    margin-top: 18px;
    padding: 16px 18px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--bg);
}
.quiz-question legend {
    padding: 0 6px;
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--ink);
}
.quiz-question legend span {
    display: inline-grid;
    place-items: center;
    width: 22px;
    height: 22px;
    margin-right: 8px;
    border-radius: 50%;
    background: var(--brand-2);
    color: #ffffff;
    font-size: 0.7rem;
    font-weight: 900;
}
.quiz-options { display: grid; gap: 8px; margin-top: 10px; }
.quiz-option {
    padding: 11px 14px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    color: var(--ink);
    font: inherit;
    font-size: 0.82rem;
    text-align: left;
    cursor: pointer;
    width: 100%;
    min-height: var(--touch-target);
    display: flex;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast) ease;
}
.quiz-option:hover {
    border-color: var(--accent);
    background: var(--home-hover);
    transform: translateY(-1px);
}
.quiz-option:active { transform: scale(0.98); }
.quiz-option.correct {
    border-color: var(--common);
    background: var(--common-bg);
    color: var(--common);
    font-weight: 800;
}
.quiz-option.incorrect {
    border-color: var(--critical);
    background: var(--critical-bg);
    color: var(--critical);
}
.quiz-feedback {
    min-height: 1.4em;
    margin-top: 8px;
    color: var(--ink-soft);
    font-size: 0.76rem;
    font-weight: 700;
}
.study-actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }

/* ─────────── Shift View ─────────── */
.shift-topline {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0 auto 14px;
    max-width: 1140px;
}
.shift-topline label {
    margin-left: auto;
    color: var(--ink-soft);
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.shift-topline select {
    max-width: 280px;
    padding: 8px 12px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    color: var(--ink);
    font: inherit;
    font-size: 0.8rem;
    min-height: var(--touch-target);
    box-shadow: var(--shadow-sm);
}
.shift-topline select:focus { border-color: var(--accent); outline: none; }
.shift-sheet {
    max-width: 1140px;
    margin: 0 auto;
    padding: clamp(18px, 3.5vw, 32px);
    border: 1.5px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--card);
    box-shadow: var(--shadow-lg);
}
.shift-sheet-head {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
}
.shift-sheet-head h1 { margin-top: 3px; font-size: clamp(1.5rem, 3.2vw, 2.2rem); color: var(--ink); }
.shift-sheet-head p { margin-top: 4px; color: var(--ink-soft); font-size: 0.86rem; }
.shift-warning {
    margin: 18px 0;
    padding: 11px 15px;
    border-radius: var(--radius-md);
    background: var(--pitfalls-bg);
    border: 1.5px solid var(--pitfalls-line);
    color: var(--pitfalls-ink);
    font-size: 0.76rem;
    font-weight: 800;
}
.shift-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}
.shift-grid section {
    padding: 16px 18px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--line);
    background: var(--bg);
}
.shift-grid h2 {
    margin-bottom: 10px;
    color: var(--brand-2);
    font-size: 0.88rem;
}
.shift-grid li, .shift-grid p {
    margin: 6px 0 0 16px;
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--ink);
}
.shift-grid li small { color: var(--ink-soft); }
.shift-red {
    border-color: var(--rf-box-line) !important;
    background: var(--rf-box-bg) !important;
}
.shift-red h2 { color: var(--critical); }
.shift-disposition { grid-column: 1 / -1; }
.shift-disposition > div {
    display: inline-block;
    vertical-align: top;
    width: min(48%, 460px);
    margin: 4px 1.5% 0 0;
    padding: 10px 12px;
    border-left: 3px solid var(--accent);
    border-radius: 4px;
    background: var(--card);
}
.shift-disposition p { margin-left: 0; }

/* ─────────── Screen Reader Only ─────────── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ─────────── Responsive Media Queries ─────────── */
@media (max-width: 1700px) and (min-width: 921px) {
    .topbar { flex-wrap: wrap; }
    .topbar-tools { order: 1; }
    .searchwrap { order: 2; flex: 1 0 100%; max-width: none; }
}

@media (max-width: 920px) {
    .sidebar {
        transform: translateX(-105%);
        transition: transform var(--transition-smooth) var(--ease-out);
    }
    .sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-float);
    }
    .main { margin-left: 0; }
    .burger { display: inline-flex; }
    .tools-toggle { display: inline-flex; }

    .topbar {
        display: grid;
        grid-template-columns: 44px 44px 44px 44px 44px 1fr;
        gap: 8px;
        padding: max(10px, env(safe-area-inset-top, 10px)) 16px 10px;
    }
    .burger { grid-column: 1; grid-row: 1; }
    .home-btn {
        grid-column: 2;
        grid-row: 1;
        width: 44px;
        min-width: 44px;
        padding: 0;
        overflow: hidden;
        display: grid;
        place-items: center;
        font-size: 1rem;
    }
    .home-btn .header-label { display: none; }
    .home-btn .header-icon { margin: 0; }
    .utility-btn {
        display: grid;
        width: 44px;
        min-width: 44px;
        padding: 0;
        font-size: 1rem;
        place-items: center;
    }
    #studyBtn { grid-column: 3; grid-row: 1; }
    #shiftBtn { grid-column: 4; grid-row: 1; }
    #ecgBtn { grid-column: 5; grid-row: 1; }
    .tools-toggle {
        grid-column: 6;
        grid-row: 1;
        justify-self: end;
        min-width: 44px;
    }
    .searchwrap {
        grid-column: 1 / -1;
        grid-row: 2;
        max-width: none;
        position: relative;
    }

    .topbar-tools {
        display: none;
        grid-column: 1 / -1;
        grid-row: 3;
        align-items: flex-start;
        gap: 12px;
        padding: 14px;
        background: var(--card);
        border: 1.5px solid var(--line);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
        margin-top: 4px;
        animation: popIn 0.2s var(--ease-out) both;
    }
    .topbar-tools.open {
        display: grid;
        grid-template-columns: 1fr;
        width: 100%;
        min-width: 0;
    }
    .chips {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }
    .chip {
        width: 100%;
        justify-content: center;
        padding-inline: 10px;
        white-space: nowrap;
    }
    .pref-tools {
        justify-content: center;
        width: 100%;
    }
    .accent-tools {
        justify-content: center;
        width: 100%;
        flex-wrap: wrap;
    }

    .case-rail { grid-template-columns: 1fr; gap: 12px; padding: 16px; }
    .case-steps { display: grid; grid-template-columns: 1fr; gap: 8px; }
    .case-actions { grid-column: auto; justify-content: flex-start; }
    .learning-loop { padding: 18px; }
    .learning-head { align-items: stretch; flex-direction: column; }
    .review-btn { align-self: flex-start; }
    .recall-grid { grid-template-columns: 1fr; }
    .pp-grid { grid-template-columns: 1fr; }
    .study-dashboard { align-items: stretch; flex-direction: column; padding: 18px; }
    .study-stats { justify-content: stretch; }
    .study-stat { flex: 1; }
    .resus-grid, .pivot-grid { grid-template-columns: 1fr; }
    .personal-plan { grid-template-columns: 1fr; }
    .personal-controls { align-items: flex-start; }

    .shift-topline { display: grid; grid-template-columns: 1fr; gap: 8px; align-items: start; }
    .shift-topline .back-btn { justify-self: start; }
    .shift-topline label { margin: 4px 0 0; }
    .shift-topline select { width: 100%; max-width: none; min-width: 0; }
    .shift-sheet-head { flex-direction: column; }
    .shift-grid { grid-template-columns: 1fr; }
    .shift-disposition { grid-column: auto; }
    .shift-disposition > div { display: block; width: 100%; margin: 6px 0 0; }
    .stage { padding: 20px 16px 36px; }
    .ecg-pattern-grid, .ecg-killers { grid-template-columns: 1fr; }
    .ecg-step-nav { overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
    .ecg-step-chip { flex: none; }
}

@media (max-width: 480px) {
    .home-btn { padding: 0; }
    .tools-toggle .header-label { display: none; }
    .tools-toggle { width: 44px; min-width: 44px; padding: 0; }
    .case-action { flex: 1; text-align: center; justify-content: center; }
    .study-tabs { overflow-x: auto; }
    .study-actions { flex-direction: column; }
    .study-actions .btn, .study-actions .back-btn, .study-actions .rf-clear, .study-actions .review-btn { width: 100%; justify-content: center; }
    .cp-hero .back-btn {
        position: static;
        margin-bottom: 14px;
        display: inline-flex;
    }
    .cp-grid { grid-template-columns: 1fr; }
    .chips { grid-template-columns: 1fr 1fr; }
    .dx-grid, .study-topic-list { grid-template-columns: minmax(0, 1fr); }
    .pref-tools {
        display: grid;
        grid-template-columns: repeat(5, minmax(0, 1fr));
        min-width: 0;
        max-width: 100%;
    }
    .pref-btn { width: 100%; min-width: 0; padding-inline: 4px; }
    .pref-scale { min-width: 0; }
}

@media (max-width: 360px) {
    .topbar { grid-template-columns: 40px 40px 40px 40px 40px 1fr; gap: 6px; }
    .home-btn, .tools-toggle, .icon-btn, .utility-btn { width: 40px; min-width: 40px; }
    .searchwrap { padding-inline: 10px; }
    #searchInput { font-size: 0.82rem; }
}

/* ─────────── Print Optimization (accent-aware, always light for paper) ─────────── */
@media print {
    .sidebar, .topbar, .toast, .side-backdrop, .back-btn, .home-btn, .pref-tools, .accent-tools, .case-rail,
    .sec-head .arrow, .pager, .related, .rf-tools, .shift-topline, .study-tabs, .study-actions,
    .personal-controls, .note-actions, .reveal-btn, .ecg-filters, .ecg-step-nav, .ecg-killers, .ecg-entry { display: none !important; }
    .main { margin: 0; }
    .section-card { break-inside: avoid; box-shadow: none; border-color: #ddd; }
    .sec-body { display: block !important; }
    .section-card.closed .sec-body { display: block; }
    .reveal-answer { display: block !important; }
    html { font-size: 14px !important; }
    html, html[data-theme="dark"] {
        --bg: #fff; --ink: #111; --ink-soft: #444; --line: #ddd; --card: #fff;
        --topbar-bg: #fff; --foot-bg: #fff;
        --ov-job-bg: #f4f7f6; --ov-job-line: #cde9de;
        --critical-bg: #fef2f2; --emergent-bg: #fff7ed; --common-bg: #f0fdf4;
        --pearls-bg: #f0fbf6; --pitfalls-bg: #fdf6ec;
    }
    /* Force light readable brand per chosen accent when printing from dark mode */
    html[data-accent="emerald"], html[data-accent="emerald"][data-theme="dark"] { --brand: #0b3d2e; --brand-2: #115743; --accent: #0f9d76; }
    html[data-accent="ocean"], html[data-accent="ocean"][data-theme="dark"] { --brand: #0b2e5e; --brand-2: #1d4fa1; --accent: #2563eb; }
    html[data-accent="violet"], html[data-accent="violet"][data-theme="dark"] { --brand: #2e1a6b; --brand-2: #5b34c4; --accent: #7c3aed; }
    html[data-accent="rose"], html[data-accent="rose"][data-theme="dark"] { --brand: #5c0f22; --brand-2: #a51c3a; --accent: #e11d48; }
    html[data-accent="amber"], html[data-accent="amber"][data-theme="dark"] { --brand: #4d2405; --brand-2: #9a4a0a; --accent: #d97706; }
    html[data-accent="teal"], html[data-accent="teal"][data-theme="dark"] { --brand: #07333b; --brand-2: #0c6a82; --accent: #0891b2; }
    html:not([data-accent]) { --brand: #0b3d2e; --brand-2: #115743; --accent: #0f9d76; }
    body { background: #fff; color: #111; }
    .cp-card, .dx-card, .wu-col, .disp-col, .resus-card, .management-pivots, .ecg-pattern { break-inside: avoid; }
}

/* ─────────── Reduced Motion ─────────── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ─────────── High Contrast & Forced Colors ─────────── */
@media (forced-colors: active) {
    .btn, .chip, .home-btn, .side-item, .cp-card, .dx-card, .section-card {
        border: 1.5px solid ButtonText;
    }
    .chip.active, .home-btn.on-home {
        background: Highlight;
        color: HighlightText;
    }
    .cp-card::before { background: Highlight; }
}

/* ─────────── Landscape Mobile ─────────── */
@media (max-height: 500px) and (orientation: landscape) {
    .stage { padding: 12px clamp(14px, 2.5vw, 28px); }
    .hero { padding: 18px clamp(16px, 2.5vw, 30px); margin-bottom: 14px; }
    .cp-hero { padding: 18px clamp(16px, 2.5vw, 28px); margin-bottom: 12px; }
    .section-card { margin-bottom: 12px; }
    .sec-head { padding: 12px 16px; }
    .sec-body { padding: 2px 16px 14px; }
}

/* ─────────── Educational Disclaimer Dialog ─────────── */
.disclaimer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(4, 14, 10, 0.82);
    backdrop-filter: blur(14px) saturate(1.4);
    -webkit-backdrop-filter: blur(14px) saturate(1.4);
    display: grid;
    place-items: center;
    padding: 20px;
    overflow-y: auto;
    animation: fadeInOverlay 0.25s var(--ease-out) both;
}
.disclaimer-overlay[hidden] {
    display: none !important;
}
@keyframes fadeInOverlay {
    from { opacity: 0; }
    to { opacity: 1; }
}

.disclaimer-modal {
    width: 100%;
    max-width: 580px;
    background: var(--card);
    border: 2px solid var(--accent);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-float);
    padding: 28px clamp(20px, 4vw, 36px);
    display: flex;
    flex-direction: column;
    gap: 18px;
    animation: springModal 0.35s var(--ease-spring) both;
    position: relative;
}
@keyframes springModal {
    from { opacity: 0; transform: translateY(24px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.disclaimer-header {
    text-align: center;
}
.disclaimer-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    background: var(--gold-bg);
    border: 1px solid var(--gold);
    color: var(--gold);
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 10px;
}
.disclaimer-header h2 {
    font-size: clamp(1.25rem, 3vw, 1.6rem);
    letter-spacing: -0.02em;
    color: var(--ink);
    line-height: 1.25;
}
.disclaimer-sub {
    font-size: 0.82rem;
    color: var(--ink-soft);
    margin-top: 6px;
    line-height: 1.45;
}

.disclaimer-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.disclaimer-callout {
    padding: 12px 14px;
    border-radius: var(--radius-md);
    background: var(--ov-job-bg);
    border: 1px solid var(--ov-job-line);
    border-left: 4px solid var(--accent);
    font-size: 0.84rem;
    line-height: 1.45;
    color: var(--brand-2);
}
.disclaimer-points {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.disclaimer-points li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    background: var(--bg);
    border: 1px solid var(--line);
}
.disclaimer-points .point-ico {
    font-size: 1.2rem;
    line-height: 1;
    flex-shrink: 0;
    margin-top: 2px;
}
.disclaimer-points strong {
    display: block;
    font-size: 0.82rem;
    color: var(--ink);
}
.disclaimer-points p {
    font-size: 0.76rem;
    color: var(--ink-soft);
    margin-top: 2px;
    line-height: 1.45;
}

.disclaimer-agree-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--line);
    background: var(--bg);
    cursor: pointer;
    transition: all var(--transition-fast) ease;
}
.disclaimer-agree-label:hover {
    border-color: var(--accent);
    background: var(--home-hover);
}
.disclaimer-agree-label input {
    width: 20px;
    height: 20px;
    accent-color: var(--accent);
    margin-top: 2px;
    cursor: pointer;
    flex-shrink: 0;
}
.disclaimer-agree-label span {
    font-size: 0.82rem;
    line-height: 1.45;
    color: var(--ink);
    font-weight: 600;
}
.disclaimer-agree-label:has(input:checked) {
    border-color: var(--accent);
    background: var(--accent-light);
}
.disclaimer-agree-label input:checked + span {
    color: var(--brand-2);
    font-weight: 800;
}

.disclaimer-footer {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 4px;
}
.disclaimer-btn {
    width: 100%;
    padding: 13px 20px;
    border-radius: var(--radius-md);
    border: 0;
    background: var(--brand-2);
    color: #ffffff;
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 800;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
    box-shadow: 0 4px 14px rgba(var(--shadow-rgb), 0.35);
    transition: all var(--transition-fast) ease;
}
html[data-theme="dark"] .disclaimer-btn {
    background: var(--accent);
    color: var(--on-fill);
    box-shadow: 0 4px 18px rgba(var(--accent-rgb), 0.35);
}
.disclaimer-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--shadow-rgb), 0.45);
}
.disclaimer-btn:active:not(:disabled) {
    transform: scale(0.98);
}
.disclaimer-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}
.disclaimer-btn .btn-arrow {
    font-size: 1.1rem;
    transition: transform var(--transition-fast) ease;
}
.disclaimer-btn:hover:not(:disabled) .btn-arrow {
    transform: translateX(4px);
}

.disclaimer-link-btn {
    margin-top: 6px;
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--side-muted);
}

/* ══════════ EM-CPs UI/UX Hardening v4 — cross-browser, buttons, responsive ══════════
   Layered AFTER base styles so it safely overrides without rewriting v3.
   Targets: Chrome / Edge / Firefox / Safari (macOS, iOS, Android), PWA standalone,
   keyboard, touch, screen-reader, print/PDF, reduced-motion, forced-colors. */

/* ── 1. Cross-browser base ── */
html {
  font-size: 16px; /* fallback for browsers without var()/calc */
  font-size: calc(16px * var(--type-scale, 1));
  color-scheme: dark light;
}
body {
  min-height: 100vh; /* fallback */
  min-height: 100svh;
  min-height: 100dvh;
  overflow-wrap: break-word;
  word-wrap: break-word;
}
.main {
  min-height: 100vh;
  min-height: 100svh;
  min-height: 100dvh;
}
/* Button / form normalization for Safari, Firefox, old Edge */
button, input, select, textarea {
  font: inherit;
  color: inherit;
}
button {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  touch-action: manipulation;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
button::-moz-focus-inner, input::-moz-focus-inner, select::-moz-focus-inner {
  border: 0;
  padding: 0;
}
input[type="search"] {
  -webkit-appearance: none;
  appearance: none;
}
input[type="search"]::-webkit-search-decoration,
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-results-button,
input[type="search"]::-webkit-search-results-decoration {
  display: none;
  -webkit-appearance: none;
}
img, svg { max-width: 100%; }
a { color: inherit; }

/* Focus: visible ring with fallback for browsers without :focus-visible */
:focus { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
:focus:not(:focus-visible) { outline: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
@supports not selector(:focus-visible) {
  :focus { outline: 2px solid var(--accent); outline-offset: 3px; }
}
/* High-visibility keyboard focus for all interactive controls */
.home-btn:focus-visible, .utility-btn:focus-visible, .icon-btn:focus-visible,
.chip:focus-visible, .pref-btn:focus-visible,
.tools-toggle:focus-visible, .side-item:focus-visible, .side-btn:focus-visible,
.cp-card:focus-visible, .sec-head:focus-visible, .back-btn:focus-visible,
.pager-btn:focus-visible, .related-chip:focus-visible, .quiz-option:focus-visible,
.study-topic:focus-visible, .study-stat:focus-visible, .patient-chip:focus-visible,
.case-action:focus-visible, .reveal-btn:focus-visible, .review-btn:focus-visible,
.save-topic:focus-visible, .rf-clear:focus-visible, .search-clear-btn:focus-visible,
.res-item:focus-visible, .disclaimer-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb),0.22), var(--shadow-sm);
}

/* ── 2. Professional button system ── */
/* Shared pressable behaviour */
.home-btn, .utility-btn, .icon-btn, .tools-toggle,
.btn, .back-btn, .chip, .pref-btn,
.side-btn, .side-item, .cp-card, .study-stat, .patient-chip,
.case-action, .reveal-btn, .review-btn, .save-topic, .rf-clear,
.related-chip, .pager-btn, .quiz-option, .study-topic,
.search-clear-btn, .res-item, .disclaimer-btn {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
/* Disabled / aria-disabled unified */
button:disabled, button[disabled], button[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: var(--shadow-sm);
}
.quiz-option:disabled { opacity: 1; cursor: default; }
.quiz-option.correct:disabled, .quiz-option.incorrect:disabled { opacity: 1; }
/* Prevent text overflow on small screens for all pill buttons */
.chip, .patient-chip, .related-chip, .case-action,
.home-btn, .back-btn, .pager-btn, .review-btn {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}
/* Consistent hover lift only on devices that can hover */
@media (hover: hover) and (pointer: fine) {
  .home-btn:hover, .pager-btn:hover, .related-chip:hover,
  .study-topic:hover, .quiz-option:not(:disabled):hover {
    transform: translateY(-1px);
  }
  .cp-card:hover { transform: translateY(-4px); }
}
@media (hover: none) {
  .home-btn:hover, .cp-card:hover, .chip:hover, .patient-chip:hover,
  .related-chip:hover, .pager-btn:hover { transform: none; }
}
/* Active nav state for Study / Shift / ECG (mirrors .on-home) */
.home-btn.active-nav {
  background: var(--brand-2);
  color: #fff;
  border-color: var(--brand-2);
  box-shadow: 0 2px 8px rgba(var(--shadow-rgb),0.25);
}
html[data-theme="dark"] .home-btn.active-nav {
  background: var(--accent);
  color: var(--on-fill);
  border-color: var(--accent);
  box-shadow: 0 2px 10px rgba(var(--accent-rgb),0.3);
}
/* Ensure utility icons align perfectly */
.home-btn .header-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2em;
  height: 1.2em;
  line-height: 1;
  flex: none;
}

/* ── 3. Topbar cross-browser + sticky fallback ── */
.topbar {
  position: -webkit-sticky;
  position: sticky;
}
/* If backdrop-filter unsupported, use solid background */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .topbar { background: var(--card); }
  .toast { background: var(--card); }
  .cp-hero .back-btn { background: rgba(255,255,255,0.28); }
}
.topbar-tools { min-width: 0; }
/* Prevent search from collapsing too small on desktop */
.searchwrap { min-width: 180px; }
#searchInput { min-width: 0; }
/* Search dropdown must stay inside viewport on all browsers */
.results-pop {
  left: 0; right: 0;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

/* ── 4. Sidebar: visibility fallback for no-inert browsers ── */
@media (max-width: 920px) {
  .sidebar {
    visibility: hidden;
    -webkit-transform: translateX(-105%);
    transform: translateX(-105%);
  }
  .sidebar.open {
    visibility: visible;
    -webkit-transform: translateX(0);
    transform: translateX(0);
  }
}
@media (min-width: 921px) {
  .sidebar { visibility: visible; }
}
/* Sidebar focus: hide scrollbars cleanly, keep scroll */
.sidebar {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

/* ── 5. Stage readability: constrain line length on ultra-wide ── */
.stage > * {
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}
.stage > .shift-topline, .stage > .shift-sheet { max-width: 1140px; }
.stage > .study-page, .stage > .case-practice { max-width: 920px; margin-left: auto; margin-right: auto; }

/* ── 6. :has() fallback — JS toggles .is-checked alongside :checked ── */
.rf-item.is-checked { background: rgba(220,38,38,0.10); }
.rf-item.is-checked span { color: var(--critical); font-weight: 800; }
.disclaimer-agree-label.is-checked {
  border-color: var(--accent);
  background: var(--accent-light);
}
.disclaimer-agree-label.is-checked span { color: var(--brand-2); font-weight: 800; }
@supports selector(:has(*)) {
  /* native :has rules from v3 remain authoritative */
}

/* ── 7. Clamp() fallbacks for older browsers ── */
.hero h1 { font-size: 1.7rem; font-size: clamp(1.5rem, 3.2vw, 2.2rem); }
.cp-hero h1 { font-size: 1.6rem; font-size: clamp(1.45rem, 2.8vw, 2rem); }
.study-page-head h1, .case-practice-head h2 { font-size: 1.5rem; font-size: clamp(1.4rem, 3vw, 1.9rem); }
.shift-sheet-head h1 { font-size: 1.7rem; font-size: clamp(1.5rem, 3.2vw, 2.2rem); }
.stage { padding: 32px 24px 40px; padding: var(--space-2xl) clamp(16px, 4vw, 48px) var(--space-3xl); }
.hero, .cp-hero { padding-left: 24px; padding-right: 24px; }

/* ── 8. Grid fallbacks: flex when grid unsupported ── */
@supports not (display: grid) {
  .cp-grid, .dx-grid, .cluster-grid, .wu-grid, .disp-grid,
  .resus-grid, .pivot-grid, .recall-grid, .pp-grid,
  .study-topic-list, .shift-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
  }
  .cp-grid > *, .dx-grid > *, .cluster-grid > *, .wu-grid > *,
  .disp-grid > *, .resus-grid > *, .pivot-grid > *,
  .recall-grid > *, .pp-grid > *, .shift-grid > * {
    flex: 1 1 260px;
    min-width: 0;
  }
  .case-rail, .case-steps { display: block; }
  .case-steps li { margin-bottom: 8px; }
}

/* ── 9. ECG view — professional, matches design system ── */
.ecg-hero {
  border-radius: var(--radius-xl);
  padding: 28px clamp(20px, 3.5vw, 40px);
  padding: 28px 24px;
  padding: 28px clamp(20px, 3.5vw, 40px);
  margin-bottom: var(--space-lg);
  background: var(--grad-brand);
  color: #ffffff;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.10);
}
.ecg-hero::after {
  content: '';
  position: absolute;
  right: -50px; top: -50px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(var(--accent-rgb),0.32) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.ecg-hero h1 { font-size: 1.6rem; font-size: clamp(1.45rem, 2.8vw, 2rem); letter-spacing: -0.02em; line-height: 1.2; color: #fff; position: relative; z-index: 1; }
.ecg-hero .tag { color: rgba(255,255,255,0.86); font-size: 0.92rem; margin-top: 6px; line-height: 1.5; position: relative; z-index: 1; }
.ecg-hero .back-btn {
  position: absolute; top: 20px; right: 20px;
  background: rgba(255,255,255,0.16); color: #fff;
  border: 1px solid rgba(255,255,255,0.32);
  border-radius: var(--radius-full);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.ecg-hero .back-btn:hover { background: rgba(255,255,255,0.28); }
.ecg-meta {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; position: relative; z-index: 1;
}
.ecg-firstpass, .ecg-redflags, .ecg-steps-card, .ecg-patterns, .ecg-pearls-pitfalls {
  background: var(--card);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: 18px;
  padding: 20px 24px;
}
.ecg-firstpass { border-left: 5px solid var(--accent); }
.ecg-redflags { border: 1.5px dashed var(--rf-box-line); background: var(--rf-box-bg); }
.ecg-firstpass h2, .ecg-redflags h2, .ecg-steps-card h2, .ecg-patterns h2 { font-size: 1.05rem; color: var(--ink); margin-top: 2px; }
.ecg-kicker {
  display: block; color: var(--accent);
  font-size: 0.67rem; font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase;
}
.ecg-redflags h2 { color: var(--critical); }
.ecg-firstpass ol, .ecg-redflags ul { list-style: none; margin-top: 12px; display: grid; gap: 8px; }
.ecg-firstpass li {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius-md); padding: 11px 14px; font-size: 0.86rem; line-height: 1.5;
}
.ecg-firstpass .ov-n { flex: none; }
.ecg-redflags li {
  font-size: 0.84rem; line-height: 1.5; padding: 8px 0 8px 26px; position: relative;
  border-bottom: 1px dashed var(--line); color: var(--ink);
}
.ecg-redflags li:last-child { border-bottom: none; }
.ecg-redflags li::before { content: '🚩'; position: absolute; left: 0; top: 8px; font-size: 0.9rem; }
.ecg-step { border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--bg); margin-top: 12px; overflow: hidden; }
.ecg-step-head {
  display: flex; align-items: center; gap: 12px; width: 100%;
  padding: 14px 18px; background: none; border: none; cursor: pointer;
  font-family: inherit; font-size: 0.95rem; font-weight: 800; color: var(--ink); text-align: left;
  min-height: var(--touch-target);
}
.ecg-step-head:hover { background: var(--home-hover); }
.ecg-step-head .sec-ico {
  width: 34px; height: 34px; border-radius: var(--radius-md);
  display: grid; place-items: center; flex: none;
  background: rgba(var(--accent-rgb),0.14); font-size: 1.05rem;
}
.ecg-step-head .arrow { margin-left: auto; color: var(--ink-soft); font-size: 0.82rem; transition: transform 280ms cubic-bezier(0.16,1,0.3,1); }
.ecg-step.closed .arrow { -webkit-transform: rotate(-90deg); transform: rotate(-90deg); }
.ecg-step-body { padding: 4px 18px 18px; }
.ecg-step.closed .ecg-step-body { display: none; }
.ecg-step-body ul { list-style: none; }
.ecg-step-body li { font-size: 0.85rem; line-height: 1.6; padding: 7px 0 7px 24px; position: relative; border-bottom: 1px dashed var(--line); color: var(--ink); }
.ecg-step-body li:last-child { border-bottom: none; }
.ecg-step-body li::before { content: '▸'; position: absolute; left: 4px; color: var(--accent); font-weight: 800; }
.ecg-pearl, .ecg-pitfall {
  margin-top: 10px; padding: 11px 13px; border-radius: 8px; font-size: 0.82rem; line-height: 1.5;
}
.ecg-pearl { border-left: 3px solid var(--common); background: var(--common-bg); color: var(--ink); }
.ecg-pitfall { border-left: 3px solid var(--gold); background: var(--gold-bg); background: var(--pitfalls-bg); color: var(--ink); }
.ecg-pattern-filter { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 4px; }
.ecg-pattern-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 14px; margin-top: 14px; }
.ecg-pattern {
  border: 1.5px solid var(--line); border-radius: var(--radius-md);
  padding: 15px 17px; border-left-width: 5px; background: var(--card);
  box-shadow: var(--shadow-sm);
}
.ecg-pattern.sev-critical { border-left-color: var(--critical); background: var(--critical-bg); }
.ecg-pattern.sev-emergent { border-left-color: var(--emergent); background: var(--emergent-bg); }
.ecg-pattern h4 { font-size: 0.92rem; line-height: 1.3; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.ecg-pattern.sev-critical h4 { color: var(--critical); }
.ecg-pattern.sev-emergent h4 { color: var(--emergent); }
.ecg-pattern dl { margin-top: 10px; display: grid; gap: 6px; font-size: 0.8rem; line-height: 1.5; }
.ecg-pattern dt { font-weight: 800; font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--brand-2); }
.ecg-pattern dd { color: var(--ink); }
.ecg-pattern dd + dt { margin-top: 4px; }
.ecg-refs { font-size: 0.76rem; color: var(--ink-soft); }
.ecg-refs li { border: none !important; padding: 4px 0 4px 24px !important; position: relative; list-style: none; }
.ecg-refs li::before { content: '📘' !important; position: absolute; left: 0; }

/* ── 10. Toast, dialog, search polish for small screens ── */
.toast {
  max-width: min(90vw, 560px);
  overflow-wrap: anywhere;
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
.disclaimer-modal {
  max-height: calc(100vh - 40px);
  max-height: calc(100dvh - 40px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}
.disclaimer-overlay { -webkit-overflow-scrolling: touch; overscroll-behavior: contain; }
.search-kbd { -webkit-user-select: none; user-select: none; }
@media (max-width: 480px) {
  .search-kbd { display: none; }
  .toast { font-size: 0.8rem; padding: 10px 18px; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); }
  .disclaimer-modal { padding: 22px 18px; gap: 14px; }
  .ecg-hero .back-btn, .cp-hero .back-btn { position: static; margin-bottom: 14px; }
  .ecg-firstpass, .ecg-redflags, .ecg-steps-card, .ecg-patterns { padding: 16px; }
  .ecg-pattern-grid { grid-template-columns: minmax(0, 1fr); }
}

/* ── 11. Responsive topbar FIX — include ECG in mobile grid ── */
@media (max-width: 920px) {
  .topbar {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 44px 44px 44px 44px 44px 1fr;
    grid-template-columns: 44px 44px 44px 44px 44px 1fr;
  }
  .burger { -ms-grid-column: 1; grid-column: 1; grid-row: 1; }
  #homeBtn { -ms-grid-column: 2; grid-column: 2; grid-row: 1; }
  #studyBtn { -ms-grid-column: 3; grid-column: 3; grid-row: 1; }
  #shiftBtn { -ms-grid-column: 4; grid-column: 4; grid-row: 1; }
  #ecgBtn { -ms-grid-column: 5; grid-column: 5; grid-row: 1; }
  .tools-toggle { -ms-grid-column: 6; grid-column: 6; grid-row: 1; }
  #homeBtn, #studyBtn, #shiftBtn, #ecgBtn {
    width: 44px; min-width: 44px; padding: 0;
    overflow: hidden; display: grid; place-items: center; font-size: 1rem;
  }
  #homeBtn .header-label, #studyBtn .header-label,
  #shiftBtn .header-label, #ecgBtn .header-label { display: none; }
  #homeBtn .header-icon, #studyBtn .header-icon,
  #shiftBtn .header-icon, #ecgBtn .header-icon { margin: 0; }
}
@media (max-width: 360px) {
  .topbar { -ms-grid-columns: 40px 40px 40px 40px 40px 1fr; grid-template-columns: 40px 40px 40px 40px 40px 1fr; gap: 6px; }
  #homeBtn, #studyBtn, #shiftBtn, #ecgBtn, .tools-toggle, .icon-btn, .burger { width: 40px; min-width: 40px; }
}
/* Desktop: keep nav compact, search flexible, tools right */
@media (min-width: 921px) {
  .topbar { flex-wrap: wrap; }
  #homeBtn, #studyBtn, #shiftBtn, #ecgBtn { flex: none; }
  .searchwrap { flex: 1 1 220px; }
  .topbar-tools { flex: 0 1 auto; }
}

/* ── 12. Print: include ECG, keep clinical tables intact ── */
@media print {
  .ecg-hero { background: #fff !important; color: #111 !important; border: 1px solid #ddd; box-shadow: none; }
  .ecg-hero h1, .ecg-hero .tag { color: #111 !important; }
  .ecg-firstpass, .ecg-redflags, .ecg-steps-card, .ecg-patterns, .ecg-step { box-shadow: none; break-inside: avoid; }
  .ecg-step-body, .ecg-step.closed .ecg-step-body { display: block !important; }
  .ecg-pattern { break-inside: avoid; box-shadow: none; }
  .tools-toggle, #studyBtn, #shiftBtn, #ecgBtn, #homeBtn, .burger { display: none !important; }
}

/* ── 13. Motion + contrast ── */
@media (prefers-reduced-motion: reduce) {
  .ecg-step-head .arrow, .cp-card::before, .toast, .disclaimer-modal, .results-pop { animation: none !important; transition: none !important; }
}
@media (forced-colors: active) {
  .ecg-hero, .hero, .cp-hero { forced-color-adjust: none; }
  .ecg-pattern, .ecg-step, .ecg-firstpass, .ecg-redflags { border: 1.5px solid ButtonText; }
}
/* Ensure text remains readable when scaled to 140% */
.personal-plan textarea, #searchInput, .shift-topline select {
  max-width: 100%;
}

/* ── 14. Scrollbars + iOS momentum (accent-tinted) ── */
.results-pop, .side-list, .stage, .disclaimer-modal {
  scrollbar-width: thin;
  scrollbar-color: var(--hover-line) transparent;
}
.patient-filter { scrollbar-width: none; }
.patient-filter::-webkit-scrollbar { display: none; }

/* ── 15. Long medical terms: never break layout ── */
.cp-card h3, .dx-card h4, .ecg-pattern h4, .sec-head span, .shift-grid h2,
.cluster h4, .wu-col h4, .study-topic strong {
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
  -webkit-hyphens: auto;
  -ms-hyphens: auto;
}
.sec-body, .ecg-step-body, .case-prompt p, .case-answer p, .ov-s {
  overflow-wrap: break-word;
}

/* ── EM Pocket phone layout: a calmer, thumb-friendly reading surface ── */
@media (max-width: 600px) {
  :root { --touch-target: 46px; }

  .topbar {
    grid-template-columns: repeat(6, minmax(40px, 1fr));
    gap: 6px;
    padding: max(8px, env(safe-area-inset-top, 8px)) 12px 9px;
  }
  .burger, #homeBtn, #studyBtn, #shiftBtn, #ecgBtn, .tools-toggle {
    width: 100%;
    min-width: 0;
    height: 46px;
    min-height: 46px;
    border-radius: 12px;
  }
  .searchwrap {
    min-height: 48px;
    margin-top: 2px;
    padding: 7px 12px;
    border-radius: 14px;
  }
  #searchInput { font-size: 0.9rem; }
  .topbar-tools {
    gap: 10px;
    margin-top: 0;
    padding: 12px;
    border-radius: 14px;
  }
  .chips { gap: 6px; }
  .chip {
    min-height: 44px;
    padding-inline: 6px;
    font-size: 0.72rem;
  }
  .pref-tools {
    padding: 4px;
    border-radius: 12px;
    background: var(--bg);
  }
  .pref-btn { min-height: 42px; }

  .stage { padding: 18px 12px 30px; }
  .foot { padding: 18px 16px calc(20px + env(safe-area-inset-bottom, 0px)); }
  .hero, .cp-hero, .ecg-hero { border-radius: 16px; }
  .hero { padding: 20px 18px; margin-bottom: 14px; }
  .hero h1 { font-size: 1.55rem; line-height: 1.18; }
  .hero-badges { gap: 6px; margin-top: 14px; }
  .hbadge { padding: 5px 8px; font-size: 0.67rem; }
  .ecg-entry { margin-bottom: 14px; border-radius: 16px; }
  .study-dashboard { margin-bottom: 16px; padding: 16px; border-radius: 16px; }
  .patient-filter { margin-bottom: 16px; padding-bottom: 6px; }
  .home-group { margin-bottom: 24px; }
  .group-title { margin-bottom: 10px; }
  .cp-grid { gap: 10px; }
  .cp-card { min-height: 128px; padding: 16px 18px; border-radius: 16px; }
  .cp-card .cp-ico { font-size: 1.7rem; margin-bottom: 4px; }
  .cp-card h3 { font-size: 1rem; }
  .cp-card .cp-count { top: 12px; right: 12px; }
}

/* ══════════ v4.1 final cross-browser fallbacks (inset, sticky, gap) ══════════ */
.sidebar { top: 0; right: auto; bottom: 0; left: 0; }
.side-backdrop, .disclaimer-overlay { top: 0; right: 0; bottom: 0; left: 0; }
.topbar { top: 0; }
/* Ensure sticky works everywhere */
@supports not (position: sticky) {
  .topbar { position: relative; }
}
/* Flex gap fallback: add breathing room when gap unsupported (old Safari) */
@supports not (gap: 8px) {
  .topbar > * + * { margin-left: 10px; }
  .chips > * + *, .patient-filter > * + *, .study-stats > * + * { margin-left: 6px; }
}

/* ══════════ v4.2 ECG schematic figures — professional, theme-aware, print-safe ══════════ */
.ecg-fig {
  margin: 12px 0 14px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.ecg-media {
  background-color: var(--card);
  background-image:
    linear-gradient(to right, var(--line-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-subtle) 1px, transparent 1px),
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 8px 8px, 8px 8px, 40px 40px, 40px 40px;
  padding: 6px 6px 2px;
}
.ecg-svg-wrap { line-height: 0; }
.ecg-svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: none;
}
/* Step 5 is a dense evidence map, not a short rhythm strip: never shrink its labels into illegibility. */
.ecg-fig[data-ecg-fig="ischemia-map"] .ecg-svg { max-height: 830px !important; }
.ecg-trace {
  fill: none;
  stroke: var(--ink);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ecg-trace-wide { stroke-width: 2.2; }
.ecg-trace-faint { opacity: 0.45; }
.ecg-marker {
  stroke: var(--critical);
  stroke-width: 1.2;
  stroke-dasharray: 4 3;
  opacity: 0.9;
}
.ecg-label {
  font-family: inherit;
  font-size: 9px;
  font-size: calc(9px * var(--type-scale, 1));
  font-weight: 700;
  fill: var(--ink-soft);
}
.ecg-label-b { font-weight: 800; fill: var(--ink); font-size: 9.5px; }
.ecg-box { fill: var(--card); stroke: var(--line); stroke-width: 1; }
.ecg-fig figcaption {
  padding: 8px 12px;
  border-top: 1px solid var(--line-subtle);
  background: var(--bg);
  color: var(--ink-soft);
  font-size: 0.76rem;
  line-height: 1.45;
}
.ecg-schem {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 8px;
  margin-right: 6px;
  border-radius: var(--radius-full);
  background: var(--accent-light);
  border: 1px solid var(--ov-job-line);
  color: var(--brand-2);
  vertical-align: 1px;
}
html[data-theme="dark"] .ecg-schem { color: var(--accent); }
.ecg-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  background: #fff;
}
@media (max-width: 480px) {
  .ecg-media { padding: 4px 4px 0; }
  .ecg-svg { max-height: 180px; }
  .ecg-fig figcaption { font-size: 0.72rem; padding: 7px 10px; }
}
@media print {
  .ecg-fig { box-shadow: none; break-inside: avoid; border-color: #bbb; }
  .ecg-media { background: #fff !important; }
  .ecg-trace { stroke: #111 !important; }
  .ecg-label { fill: #444 !important; }
  .ecg-label-b { fill: #111 !important; }
  .ecg-marker { stroke: #b91c1c !important; }
  .ecg-box { fill: #fff !important; stroke: #bbb !important; }
  .ecg-fig figcaption { background: #f6f6f6 !important; color: #333 !important; }
}
@media (forced-colors: active) {
  .ecg-trace { stroke: ButtonText; }
  .ecg-label, .ecg-label-b { fill: ButtonText; }
  .ecg-marker { stroke: Highlight; }
  .ecg-box { fill: Canvas; stroke: ButtonText; }
  .ecg-fig { border: 1.5px solid ButtonText; }
}

/* v4.3 ECG accuracy helpers */
.ecg-lead { font-weight: 800; fill: var(--ink); font-size: 10px; font-size: calc(10px * var(--type-scale, 1)); }
.ecg-j { fill: var(--critical); stroke: #fff; stroke-width: 0.8; }
html[data-theme="dark"] .ecg-j { stroke: #05241a; }
@media print { .ecg-j { fill: #b91c1c !important; stroke: #fff !important; } }
@media (forced-colors: active) { .ecg-j { fill: Highlight; stroke: Canvas; } }

/* v4.4 ECG clarity + modern + interactive (LITFL-inspired, original art) */
.ecg-trace { stroke-width: 2.4; }
.ecg-trace-wide { stroke-width: 2.6; }
.ecg-marker { stroke-width: 1.4; }
.ecg-j { r: 2.6; }
.ecg-svg text, .ecg-label {
  paint-order: stroke;
  stroke: var(--card);
  stroke-width: 3px;
  stroke-linejoin: round;
}
.ecg-media { padding: 8px 8px 4px; }
.ecg-fig { transition: box-shadow 220ms ease, border-color 220ms ease, transform 220ms ease; }
@media (hover: hover) and (pointer: fine) {
  .ecg-fig:hover { border-color: var(--accent); box-shadow: var(--shadow); }
}
/* Toolbar */
.ecg-tools {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 8px 12px;
  border-top: 1px solid var(--line-subtle);
  background: var(--card);
  align-items: center;
}
.ecg-tool {
  min-height: 40px;
  padding: 6px 14px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-full);
  background: var(--bg);
  color: var(--ink);
  font: inherit; font-size: 0.76rem; font-weight: 800;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: all 150ms ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.ecg-tool:hover { border-color: var(--accent); background: var(--home-hover); transform: translateY(-1px); }
.ecg-tool:active { transform: scale(0.97); }
.ecg-tool[aria-pressed="true"] { background: var(--brand-2); border-color: var(--brand-2); color: #fff; }
html[data-theme="dark"] .ecg-tool[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-fill); }
/* Annotation toggle */
.ecg-fig.hide-anno .ecg-marker,
.ecg-fig.hide-anno circle.ecg-j,
.ecg-fig.hide-anno .ecg-sthl,
.ecg-fig.hide-anno text.ecg-label:not(.ecg-lead) { display: none; }
/* Normal-reference inset (hidden until toggled) */
.ecg-normal-ref { display: none; }
.ecg-fig.show-compare .ecg-normal-ref { display: block; }
.ecg-normal-trace { fill: none; stroke: var(--common); stroke-width: 1.6; stroke-dasharray: 5 3; stroke-linecap: round; }
.ecg-normal-box { fill: var(--card); stroke: var(--common); stroke-width: 1; opacity: 0.96; }
.ecg-credit { display: block; margin-top: 4px; font-size: 0.7rem; opacity: 0.9; }
.ecg-litfl { margin-top: 10px; font-size: 0.78rem; color: var(--ink-soft); line-height: 1.5; }
.ecg-litfl a { color: var(--brand-2); font-weight: 800; }
/* Lightbox (enlarge) */
.ecg-lightbox {
  position: fixed; top: 0; right: 0; bottom: 0; left: 0;
  z-index: 500;
  background: rgba(4,14,10,0.78);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  display: grid; place-items: center;
  padding: 20px;
  overflow-y: auto;
}
.ecg-lightbox[hidden] { display: none !important; }
.ecg-lightbox-card {
  width: 100%; max-width: 760px;
  background: var(--card); color: var(--ink);
  border: 1.5px solid var(--line); border-radius: var(--radius-xl);
  box-shadow: var(--shadow-float);
  overflow: hidden;
}
.ecg-lightbox-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; border-bottom: 1px solid var(--line);
}
.ecg-lightbox-head strong { font-size: 0.95rem; }
.ecg-lightbox-close {
  min-height: 44px; padding: 8px 18px;
  border-radius: var(--radius-md); border: 1.5px solid var(--line);
  background: var(--bg); color: var(--ink);
  font: inherit; font-size: 0.82rem; font-weight: 800; cursor: pointer;
}
.ecg-lightbox-close:hover { border-color: var(--accent); }
.ecg-lightbox-media {
  background-color: var(--card);
  background-image:
    linear-gradient(to right, var(--line-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-subtle) 1px, transparent 1px),
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 8px 8px, 8px 8px, 40px 40px, 40px 40px;
  padding: 10px;
}
.ecg-lightbox-media .ecg-svg { max-height: none; }
.ecg-lightbox-cap { padding: 10px 16px 16px; color: var(--ink-soft); font-size: 0.82rem; line-height: 1.5; }
@media (max-width: 480px) {
  .ecg-tool { flex: 1; justify-content: center; }
  .ecg-lightbox { padding: 12px; }
}
@media print {
  .ecg-fig[data-sel] .ecg-marker, .ecg-fig[data-sel] text.ecg-label[data-wave], .ecg-fig[data-sel] circle.ecg-j { opacity: 1 !important; }
  .ecg-tools, .ecg-lightbox { display: none !important; }
  .ecg-fig.hide-anno .ecg-marker,
  .ecg-fig.hide-anno circle.ecg-j,
  .ecg-fig.hide-anno .ecg-sthl,
  .ecg-fig.hide-anno text.ecg-label:not(.ecg-lead) { display: block !important; }
  .ecg-normal-ref { display: none !important; }
}
@media (forced-colors: active) {
  .ecg-tool, .ecg-lightbox-card { border: 1.5px solid ButtonText; }
  .ecg-normal-trace { stroke: Highlight; }
  .ecg-normal-box { stroke: Highlight; fill: Canvas; }
}
@media (prefers-reduced-motion: reduce) {
  .ecg-fig, .ecg-tool { transition: none !important; }
}

/* v4.5 ECG paper — classic high-contrast printout, always light for realism */
.ecg-media {
  background-color: #ffffff;
  background-image:
    linear-gradient(to right, rgba(244,120,130,0.22) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(244,120,130,0.22) 1px, transparent 1px),
    linear-gradient(to right, rgba(230,80,95,0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(230,80,95,0.42) 1px, transparent 1px);
  background-size: 8px 8px, 8px 8px, 40px 40px, 40px 40px;
  border-bottom: 1px solid #f0b6bc;
}
.ecg-svg.ecg-paper { max-height: 340px; }
.ecg-svg.ecg-tall { max-height: 460px; }
.ecg-svg.ecg-case-12lead { max-height: 320px; }
/* Keep the conventional 3 × 4 + rhythm-strip layout readable on a phone. */
@media (max-width: 700px) { .ecg-svg.ecg-case-12lead { max-height: 260px; } }
@media (max-width: 700px) { .ecg-svg.ecg-tall { max-height: 300px; } }
/* Phones: let wide ECG figures pan horizontally instead of shrinking to
   unreadable size. min-width keeps annotation text near 9px at 360px. */
@media (max-width: 700px) {
  .ecg-media { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .ecg-media .ecg-svg-wrap { min-width: 0; }
  .ecg-media .ecg-svg-wrap .ecg-svg { max-height: none; }
}
.ecg-paper .ecg-trace { stroke: #111111; }
.ecg-paper .ecg-rhythm { stroke-width: 2; opacity: 0.95; }
.ecg-paper .ecg-label { fill: #374151; stroke: #ffffff; }
.ecg-paper .ecg-lead { fill: #111111; }
.ecg-paper .ecg-marker { stroke: #dc2626; }
.ecg-paper .ecg-j { fill: #dc2626; stroke: #ffffff; }
.ecg-paper .ecg-box { fill: #ffffff; stroke: #d1d5db; }
.ecg-paper .ecg-sep { stroke: #e5a0a7; stroke-width: 1; stroke-dasharray: 6 4; }
.ecg-paper .ecg-normal-trace { stroke: #16a34a; }
.ecg-paper .ecg-normal-box { fill: #ffffff; stroke: #16a34a; }
.ecg-lightbox-media {
  background-color: #ffffff;
  background-image:
    linear-gradient(to right, rgba(244,120,130,0.22) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(244,120,130,0.22) 1px, transparent 1px),
    linear-gradient(to right, rgba(230,80,95,0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(230,80,95,0.42) 1px, transparent 1px);
  background-size: 8px 8px, 8px 8px, 40px 40px, 40px 40px;
}
@media (max-width: 700px) {
  .ecg-svg.ecg-paper { max-height: 240px; }
}

/* v4.6 pilot: tappable R-peak calipers (Step 1) */
.ecg-hit { fill: transparent; stroke: none; pointer-events: all; cursor: pointer; outline: none; }
.ecg-hit:hover { fill: rgba(var(--accent-rgb),0.28); stroke: var(--accent); stroke-width: 2; }
.ecg-hit:focus, .ecg-hit:focus-visible { fill: rgba(var(--accent-rgb),0.32); stroke: var(--accent); stroke-width: 2.5; outline: none; }
@media (forced-colors: active) { .ecg-hit:hover, .ecg-hit:focus { fill: Highlight; stroke: HighlightText; } }
.ecg-sec { fill: var(--ink-soft); }
.ecg-paper .ecg-sec { fill: #9ca3af; }

/* v4.7 wave inspector (Step 1 pilot) */
.ecg-hotzone { fill: transparent; stroke: none; pointer-events: all; }
.ecg-hot { cursor: pointer; outline: none; }
.ecg-hot:hover .ecg-hotzone { fill: rgba(var(--accent-rgb),0.20); stroke: var(--accent); stroke-width: 1.5; }
.ecg-hot:focus .ecg-hotzone, .ecg-hot:focus-visible .ecg-hotzone { fill: rgba(var(--accent-rgb),0.26); stroke: var(--accent); stroke-width: 2; }
.ecg-hot.on .ecg-hotzone { fill: rgba(var(--accent-rgb),0.30); stroke: var(--accent); stroke-width: 2; }
.ecg-paper .ecg-hot:hover .ecg-hotzone { fill: rgba(220,38,38,0.12); stroke: #dc2626; }
.ecg-paper .ecg-hot:focus .ecg-hotzone, .ecg-paper .ecg-hot.on .ecg-hotzone { fill: rgba(220,38,38,0.16); stroke: #dc2626; }
/* Step 4 uses invisible hit areas so selected teaching points never cover the ECG trace. */
.ecg-hot:hover .ecg-hotzone-quiet,
.ecg-hot:focus .ecg-hotzone-quiet,
.ecg-hot:focus-visible .ecg-hotzone-quiet,
.ecg-hot.on .ecg-hotzone-quiet,
.ecg-paper .ecg-hot:hover .ecg-hotzone-quiet,
.ecg-paper .ecg-hot:focus .ecg-hotzone-quiet,
.ecg-paper .ecg-hot.on .ecg-hotzone-quiet { fill: transparent; stroke: none; }
.ecg-inspector {
  padding: 9px 14px;
  border-top: 1px solid var(--line-subtle);
  background: var(--bg);
  color: var(--ink);
  font-size: 0.8rem;
  line-height: 1.5;
  min-height: 48px;
}
.ecg-inspector strong { color: var(--brand-2); }
html[data-theme="dark"] .ecg-inspector strong { color: var(--accent); }
@media print { .ecg-inspector { display: none !important; } .ecg-hotzone { display: none !important; } }
@media (forced-colors: active) { .ecg-hot:hover .ecg-hotzone, .ecg-hot.on .ecg-hotzone { fill: Highlight; stroke: HighlightText; } }
.ecg-legend-ring { fill: none; stroke: var(--accent); stroke-width: 2; }
.ecg-paper .ecg-legend-ring { stroke: #059669; }
.ecg-lightbox .ecg-hotzone { pointer-events: none; }
.ecg-lightbox .ecg-hot { cursor: default; }
/* v4.8 linked annotations: tapped wave keeps its red lines, others dim */
.ecg-fig .ecg-marker, .ecg-fig text.ecg-label[data-wave] { transition: opacity 150ms ease; }
.ecg-fig[data-sel="cal"] .ecg-marker:not([data-wave="cal"]) { opacity: 0.12; }
.ecg-fig[data-sel="cal"] text.ecg-label[data-wave]:not([data-wave="cal"]) { opacity: 0.12; }
.ecg-fig[data-sel="cal"] circle.ecg-j:not([data-wave="cal"]) { opacity: 0.12; }
.ecg-fig[data-sel="p"] .ecg-marker:not([data-wave="p"]) { opacity: 0.12; }
.ecg-fig[data-sel="p"] text.ecg-label[data-wave]:not([data-wave="p"]) { opacity: 0.12; }
.ecg-fig[data-sel="p"] circle.ecg-j:not([data-wave="p"]) { opacity: 0.12; }
.ecg-fig[data-sel="pr"] .ecg-marker:not([data-wave="pr"]) { opacity: 0.12; }
.ecg-fig[data-sel="pr"] text.ecg-label[data-wave]:not([data-wave="pr"]) { opacity: 0.12; }
.ecg-fig[data-sel="pr"] circle.ecg-j:not([data-wave="pr"]) { opacity: 0.12; }
.ecg-fig[data-sel="qrs"] .ecg-marker:not([data-wave="qrs"]) { opacity: 0.12; }
.ecg-fig[data-sel="qrs"] text.ecg-label[data-wave]:not([data-wave="qrs"]) { opacity: 0.12; }
.ecg-fig[data-sel="qrs"] circle.ecg-j:not([data-wave="qrs"]) { opacity: 0.12; }
.ecg-fig[data-sel="st"] .ecg-marker:not([data-wave="st"]) { opacity: 0.12; }
.ecg-fig[data-sel="st"] text.ecg-label[data-wave]:not([data-wave="st"]) { opacity: 0.12; }
.ecg-fig[data-sel="st"] circle.ecg-j:not([data-wave="st"]) { opacity: 0.12; }
.ecg-fig[data-sel="t"] .ecg-marker:not([data-wave="t"]) { opacity: 0.12; }
.ecg-fig[data-sel="t"] text.ecg-label[data-wave]:not([data-wave="t"]) { opacity: 0.12; }
.ecg-fig[data-sel="t"] circle.ecg-j:not([data-wave="t"]) { opacity: 0.12; }
.ecg-fig[data-sel="qt"] .ecg-marker:not([data-wave="qt"]) { opacity: 0.12; }
.ecg-fig[data-sel="qt"] text.ecg-label[data-wave]:not([data-wave="qt"]) { opacity: 0.12; }
.ecg-fig[data-sel="qt"] circle.ecg-j:not([data-wave="qt"]) { opacity: 0.12; }
.ecg-fig[data-sel="rr"] .ecg-marker:not([data-wave="rr"]) { opacity: 0.12; }
.ecg-fig[data-sel="rr"] text.ecg-label[data-wave]:not([data-wave="rr"]) { opacity: 0.12; }
.ecg-fig[data-sel="rr"] circle.ecg-j:not([data-wave="rr"]) { opacity: 0.12; }
.ecg-fig[data-sel="inf"] .ecg-marker:not([data-wave="inf"]) { opacity: 0.12; }
.ecg-fig[data-sel="inf"] text.ecg-label[data-wave]:not([data-wave="inf"]) { opacity: 0.12; }
.ecg-fig[data-sel="inf"] circle.ecg-j:not([data-wave="inf"]) { opacity: 0.12; }
.ecg-fig[data-sel="mirror"] .ecg-marker:not([data-wave="mirror"]) { opacity: 0.12; }
.ecg-fig[data-sel="mirror"] text.ecg-label[data-wave]:not([data-wave="mirror"]) { opacity: 0.12; }
.ecg-fig[data-sel="mirror"] circle.ecg-j:not([data-wave="mirror"]) { opacity: 0.12; }
.ecg-fig[data-sel="hyperacute"] .ecg-marker:not([data-wave="hyperacute"]) { opacity: 0.12; }
.ecg-fig[data-sel="hyperacute"] text.ecg-label[data-wave]:not([data-wave="hyperacute"]) { opacity: 0.12; }
.ecg-fig[data-sel="hyperacute"] circle.ecg-j:not([data-wave="hyperacute"]) { opacity: 0.12; }
.ecg-fig[data-sel="hyperk"] .ecg-marker:not([data-wave="hyperk"]) { opacity: 0.12; }
.ecg-fig[data-sel="hyperk"] text.ecg-label[data-wave]:not([data-wave="hyperk"]) { opacity: 0.12; }
.ecg-fig[data-sel="hyperk"] circle.ecg-j:not([data-wave="hyperk"]) { opacity: 0.12; }
.ecg-fig[data-sel="ischa"] .ecg-marker:not([data-wave="ischa"]) { opacity: 0.12; }
.ecg-fig[data-sel="ischa"] text.ecg-label[data-wave]:not([data-wave="ischa"]) { opacity: 0.12; }
.ecg-fig[data-sel="ischa"] circle.ecg-j:not([data-wave="ischa"]) { opacity: 0.12; }
.ecg-fig[data-sel="wellens"] .ecg-marker:not([data-wave="wellens"]) { opacity: 0.12; }
.ecg-fig[data-sel="wellens"] text.ecg-label[data-wave]:not([data-wave="wellens"]) { opacity: 0.12; }
.ecg-fig[data-sel="wellens"] circle.ecg-j:not([data-wave="wellens"]) { opacity: 0.12; }
.ecg-fig[data-sel="dewinter"] .ecg-marker:not([data-wave="dewinter"]) { opacity: 0.12; }
.ecg-fig[data-sel="dewinter"] text.ecg-label[data-wave]:not([data-wave="dewinter"]) { opacity: 0.12; }
.ecg-fig[data-sel="dewinter"] circle.ecg-j:not([data-wave="dewinter"]) { opacity: 0.12; }
.ecg-fig[data-sel="sgSte"] .ecg-marker:not([data-wave="sgSte"]) { opacity: 0.12; }
.ecg-fig[data-sel="sgSte"] text.ecg-label[data-wave]:not([data-wave="sgSte"]) { opacity: 0.12; }
.ecg-fig[data-sel="sgSte"] circle.ecg-j:not([data-wave="sgSte"]) { opacity: 0.12; }
.ecg-fig[data-sel="sgStd"] .ecg-marker:not([data-wave="sgStd"]) { opacity: 0.12; }
.ecg-fig[data-sel="sgStd"] text.ecg-label[data-wave]:not([data-wave="sgStd"]) { opacity: 0.12; }
.ecg-fig[data-sel="sgStd"] circle.ecg-j:not([data-wave="sgStd"]) { opacity: 0.12; }
.ecg-fig[data-sel="sgDis"] .ecg-marker:not([data-wave="sgDis"]) { opacity: 0.12; }
.ecg-fig[data-sel="sgDis"] text.ecg-label[data-wave]:not([data-wave="sgDis"]) { opacity: 0.12; }
.ecg-fig[data-sel="sgDis"] circle.ecg-j:not([data-wave="sgDis"]) { opacity: 0.12; }
.ecg-fig[data-sel="ant"] .ecg-marker:not([data-wave="ant"]) { opacity: 0.12; }
.ecg-fig[data-sel="ant"] text.ecg-label[data-wave]:not([data-wave="ant"]) { opacity: 0.12; }
.ecg-fig[data-sel="ant"] circle.ecg-j:not([data-wave="ant"]) { opacity: 0.12; }
.ecg-fig[data-sel="post"] .ecg-marker:not([data-wave="post"]) { opacity: 0.12; }
.ecg-fig[data-sel="post"] text.ecg-label[data-wave]:not([data-wave="post"]) { opacity: 0.12; }
.ecg-fig[data-sel="post"] circle.ecg-j:not([data-wave="post"]) { opacity: 0.12; }
.ecg-fig[data-sel="narrow"] .ecg-marker:not([data-wave="narrow"]) { opacity: 0.12; }
.ecg-fig[data-sel="narrow"] text.ecg-label[data-wave]:not([data-wave="narrow"]) { opacity: 0.12; }
.ecg-fig[data-sel="narrow"] circle.ecg-j:not([data-wave="narrow"]) { opacity: 0.12; }
.ecg-fig[data-sel="wide"] .ecg-marker:not([data-wave="wide"]) { opacity: 0.12; }
.ecg-fig[data-sel="wide"] text.ecg-label[data-wave]:not([data-wave="wide"]) { opacity: 0.12; }
.ecg-fig[data-sel="wide"] circle.ecg-j:not([data-wave="wide"]) { opacity: 0.12; }
.ecg-fig[data-sel="psinus"] .ecg-marker:not([data-wave="psinus"]) { opacity: 0.12; }
.ecg-fig[data-sel="psinus"] text.ecg-label[data-wave]:not([data-wave="psinus"]) { opacity: 0.12; }
.ecg-fig[data-sel="psinus"] circle.ecg-j:not([data-wave="psinus"]) { opacity: 0.12; }
.ecg-fig[data-sel="axis"] .ecg-marker:not([data-wave="axis"]) { opacity: 0.12; }
.ecg-fig[data-sel="axis"] text.ecg-label[data-wave]:not([data-wave="axis"]) { opacity: 0.12; }
.ecg-fig[data-sel="axis"] circle.ecg-j:not([data-wave="axis"]) { opacity: 0.12; }
.ecg-fig[data-sel="reg"] .ecg-marker:not([data-wave="reg"]) { opacity: 0.12; }
.ecg-fig[data-sel="reg"] text.ecg-label[data-wave]:not([data-wave="reg"]) { opacity: 0.12; }
.ecg-fig[data-sel="reg"] circle.ecg-j:not([data-wave="reg"]) { opacity: 0.12; }
.ecg-fig[data-sel="v1"] .ecg-marker:not([data-wave="v1"]) { opacity: 0.12; }
.ecg-fig[data-sel="v1"] text.ecg-label[data-wave]:not([data-wave="v1"]) { opacity: 0.12; }
.ecg-fig[data-sel="v1"] circle.ecg-j:not([data-wave="v1"]) { opacity: 0.12; }
.ecg-fig[data-sel="v5"] .ecg-marker:not([data-wave="v5"]) { opacity: 0.12; }
.ecg-fig[data-sel="v5"] text.ecg-label[data-wave]:not([data-wave="v5"]) { opacity: 0.12; }
.ecg-fig[data-sel="v5"] circle.ecg-j:not([data-wave="v5"]) { opacity: 0.12; }
.ecg-fig[data-sel="chambers"] .ecg-marker:not([data-wave="chambers"]) { opacity: 0.12; }
.ecg-fig[data-sel="chambers"] text.ecg-label[data-wave]:not([data-wave="chambers"]) { opacity: 0.12; }
.ecg-fig[data-sel="chambers"] circle.ecg-j:not([data-wave="chambers"]) { opacity: 0.12; }
.ecg-fig[data-sel="lowv"] .ecg-marker:not([data-wave="lowv"]) { opacity: 0.12; }
.ecg-fig[data-sel="lowv"] text.ecg-label[data-wave]:not([data-wave="lowv"]) { opacity: 0.12; }
.ecg-fig[data-sel="lowv"] circle.ecg-j:not([data-wave="lowv"]) { opacity: 0.12; }
.ecg-fig[data-sel] .ecg-marker[data-wave] { stroke-width: 2.2; }
@media (prefers-reduced-motion: reduce) { .ecg-fig .ecg-marker, .ecg-fig text.ecg-label[data-wave], .ecg-fig circle.ecg-j { transition: none !important; } }
/* v4.9 wave buttons below ECG */
.ecg-wavebtns { display: flex; flex-wrap: wrap; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--line-subtle); background: var(--card); }
.ecg-wavebtn { min-height: 40px; padding: 6px 14px; border: 1.5px solid var(--line); border-radius: var(--radius-full); background: var(--bg); color: var(--ink); font: inherit; font-size: 0.76rem; font-weight: 800; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; box-shadow: var(--shadow-sm); transition: all 150ms ease; -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
.ecg-wavebtn:hover { border-color: var(--accent); background: var(--home-hover); transform: translateY(-1px); }
.ecg-wavebtn:active { transform: scale(0.97); }
.ecg-wavebtn[aria-pressed="true"] { background: var(--brand-2); border-color: var(--brand-2); color: #fff; }
html[data-theme="dark"] .ecg-wavebtn[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-fill); }
@media (max-width: 480px) { .ecg-wavebtn { flex: 1 1 30%; padding: 6px 8px; } }
@media print { .ecg-wavebtns { display: none !important; } }
@media (forced-colors: active) { .ecg-wavebtn { border: 1.5px solid ButtonText; } }
@media (prefers-reduced-motion: reduce) { .ecg-wavebtn { transition: none !important; } }
.ecg-axis-ok { fill: rgba(var(--accent-rgb),0.14); stroke: none; }
.ecg-axis-line { stroke: var(--ink); stroke-width: 1.5; }
.ecg-paper .ecg-axis-ok { fill: rgba(22,163,74,0.12); }
@media print { .ecg-axis-ok { fill: #e6f7f2 !important; } .ecg-axis-line { stroke: #111 !important; } }
@media (forced-colors: active) { .ecg-axis-ok { fill: Canvas; stroke: ButtonText; } .ecg-axis-line { stroke: ButtonText; } }
/* v4.11 night-mode: paper stays light, so no theme-ink paint inside it */
.ecg-paper .ecg-label-b { fill: #111111; stroke: #ffffff; }
.ecg-paper .ecg-axis-line { stroke: #111111; }
/* v4.12 label readability: halo blobs on scaled SVG in Chromium — use bare dark glyphs like real printouts */
.ecg-svg text, .ecg-svg .ecg-label, .ecg-svg .ecg-lead, .ecg-svg .ecg-label-b {
  paint-order: normal;
  stroke: none;
}
.ecg-paper .ecg-label { fill: #1f2937; }
.ecg-paper .ecg-lead, .ecg-paper .ecg-label-b { fill: #111111; }
.ecg-svg .ecg-label { font-size: 10.5px; font-size: calc(10.5px * var(--type-scale, 1)); }
.ecg-svg .ecg-lead, .ecg-svg .ecg-label-b { font-size: 12px; font-size: calc(12px * var(--type-scale, 1)); }
@media print {
  .ecg-paper .ecg-label { fill: #1f2937 !important; }
  .ecg-paper .ecg-lead, .ecg-paper .ecg-label-b { fill: #111111 !important; }
}
@media (forced-colors: active) {
  .ecg-svg text { stroke: none; }
}

/* ── Small-screen containment: keep every app surface inside the viewport ── */
@media (max-width: 600px) {
  html, body, .main, .topbar, .stage, .stage > *, .foot {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
  .main { margin-left: 0; }
  .sidebar {
    width: min(88vw, 320px);
    max-width: calc(100vw - env(safe-area-inset-right, 0px));
    padding: max(14px, env(safe-area-inset-top, 14px)) 12px calc(14px + env(safe-area-inset-bottom, 0px));
  }
  .side-list, .side-footer, .brand-text, .side-item, .side-btn { min-width: 0; }
  .side-item, .side-btn { overflow-wrap: anywhere; }

  .topbar > * { min-width: 0; }
  .topbar-tools, .chips, .pref-tools { max-width: 100%; min-width: 0; }
  .topbar-tools.open { overflow: hidden; }
  .pref-tools { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .pref-btn, .pref-scale { min-width: 0; }
  .section-card, .sec-head, .sec-body, .cp-hero, .hero, .ecg-hero,
  .study-dashboard, .personal-plan, .shift-sheet, .shift-topline,
  .ecg-pattern, .ecg-fig, .ecg-media { min-width: 0; max-width: 100%; }
}

@media (max-width: 360px) {
  .topbar {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 5px;
    padding-inline: 8px;
  }
  .burger, #homeBtn, #studyBtn, #shiftBtn, #ecgBtn, .tools-toggle {
    min-width: 0;
    width: 100%;
    height: 44px;
    min-height: 44px;
  }
  .tools-toggle .header-label { display: none; }
  .sidebar { width: min(92vw, 300px); }
  .stage { padding-inline: 10px; }
  .hero, .cp-hero, .ecg-hero { padding-left: 16px; padding-right: 16px; }
  .chip { font-size: 0.68rem; }
}

/* v5.0 ECG engine 12-lead (Phase 1): paper grid lives inside the SVG so paper
   and waveform stay geometrically locked. Container only provides readable
   horizontal scroll on phones; engine SVG is self-styled (always light paper)
   and needs no theme overrides. */
.ecg-svg.ecg-engine-12lead { max-height: 560px; }
.ecg-fig .ecg-svg.ecg-engine-12lead { width: 100%; height: auto; }
@media (max-width: 700px) {
  .ecg-media .ecg-svg-wrap:has(.ecg-engine-12lead) { min-width: 0; }
  .ecg-svg.ecg-engine-12lead { max-height: none; min-width: 0; }
}
@media print {
  .ecg-svg.ecg-engine-12lead { max-height: none; }
}

/* ECG audit: paper and signal share SVG units. Schematics have no pseudo-scale. */
.ecg-media, .ecg-lightbox-media { background: #fff; }
.ecg-fig .ecg-svg.ecg-calibrated { max-height: none; }
.ecg-fig:has(.ecg-calibrated) .ecg-svg-wrap { min-width: 0; }
.ecg-fig:has(.ecg-calibrated) .ecg-media { overflow-x: auto; }
.ecg-calibrated .ecg-panel-heading { font: 600 13px ui-monospace, SFMono-Regular, Consolas, monospace; fill: #17212b; }
.ecg-calibrated .ecg-panel-tick { font: 11px ui-monospace, SFMono-Regular, Consolas, monospace; fill: #475569; }
.ecg-calibrated .ecg-signal { stroke: #17212b; stroke-width: 1.25; }
.ecg-reference { display: none; fill: none; stroke: #2563eb; stroke-width: 1.25; stroke-dasharray: 5 3; }
.show-reference .ecg-reference { display: block; }
.hide-anno .ecg-annotation, .hide-labels .ecg-annotation,
.hide-labels .ecg-marker, .hide-labels .ecg-label:not(.ecg-lead) { display: none; }
.ecg-workbench .ecg-lightbox-card { max-width: 1200px; max-height: calc(100dvh - 32px); overflow-y: auto; }
.ecg-workbench .ecg-lightbox-head { position: sticky; top: 0; z-index: 2; background: var(--card); }
.ecg-workbench-tools, .ecg-caliper-inputs { display: flex; flex-wrap: wrap; align-items: end; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.ecg-workbench-tools label, .ecg-caliper-inputs label { display: grid; gap: 4px; font-size: .75rem; color: var(--ink-soft); }
.ecg-workbench-tools select, .ecg-workbench-tools button, .ecg-caliper-inputs input { min-height: 44px; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; background: var(--card); color: var(--ink); font: inherit; }
.ecg-caliper-inputs input { width: 140px; }
.ecg-workbench-tools button { cursor: pointer; font-size: .8rem; }
.ecg-workbench-tools button[aria-pressed="true"] { background: var(--accent); color: #10261c; }
.ecg-workbench-tools :focus-visible, .ecg-caliper-inputs :focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.ecg-workbench-paper { max-height: 58dvh; overflow: auto; background: white; padding: 12px; }
.ecg-workbench-canvas { min-width: 0; }
.ecg-workbench-canvas .ecg-svg { max-height: none !important; width: 100%; height: auto; }
.ecg-workbench-canvas.is-measuring { cursor: crosshair; touch-action: none; }
.ecg-workbench .ecg-hotzone { pointer-events: none; }
.ecg-calipers line { stroke: #7c3aed; stroke-width: 1; stroke-dasharray: 3 2; }
.ecg-calipers circle { fill: #7c3aed; stroke: white; stroke-width: 2; cursor: grab; }
.ecg-calipers text { fill: #5b21b6; font: bold 14px system-ui, sans-serif; paint-order: stroke; stroke: white; stroke-width: 3; }
.ecg-measurement { margin: 0; padding: 10px 16px; font-size: .85rem; line-height: 1.5; }
.ecg-measurement:empty { display: none; }
.ecg-caliper-inputs[hidden] { display: none; }
.ecg-fig figcaption { line-height: 1.55; }
@media (max-width: 600px) {
  .ecg-workbench { padding: 4px; }
  .ecg-workbench .ecg-lightbox-card { max-height: calc(100dvh - 8px); }
  .ecg-workbench-tools { gap: 6px; padding: 10px; }
  .ecg-workbench-paper { max-height: 48dvh; }
}
@media print {
  .ecg-fig:has(.ecg-calibrated) .ecg-svg-wrap { min-width: 0; }
  .ecg-fig:has(.ecg-calibrated) .ecg-media { overflow: visible; }
  .ecg-annotation { display: block !important; }
  .ecg-reference { display: none !important; }
  .ecg-workbench { display: none !important; }
}
.ecg-tool[hidden] { display: none !important; }

/* Fit the whole tracing first; zoom is an explicit viewer action. */
.ecg-fig .ecg-media { overflow: hidden; padding: 6px; }
.ecg-fig .ecg-svg-wrap { width: 100%; min-width: 0; max-width: 720px; margin-inline: auto; }
.ecg-fig .ecg-media .ecg-svg { width: 100%; min-width: 0; height: auto; max-height: none !important; }
.ecg-workbench .ecg-lightbox-card { min-width: 0; }
.ecg-workbench-canvas .ecg-svg { min-width: 0; }
.ecg-workbench-tools label { min-width: 0; }
.ecg-workbench-tools select { width: 100%; min-width: 0; max-width: 100%; }
.ecg-workbench-tools .ecg-diagnosis { flex: 1 1 100%; grid-column: 1 / -1; font-size: .85rem; }
.ecg-findings { padding: 12px 16px; border-bottom: 1px solid var(--line); }
.ecg-findings > strong { font-size: .85rem; }
.ecg-finding-buttons { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.ecg-finding-buttons button { min-height: 44px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); background: var(--card); font: inherit; font-size: .8rem; cursor: pointer; }
.ecg-finding-buttons button[aria-pressed="true"] { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.ecg-finding-detail { margin: 10px 0 0; font-size: .85rem; line-height: 1.55; }
.ecg-finding-marks, .ecg-inline-marks { pointer-events: none; }
.ecg-finding-marks ellipse, .ecg-inline-marks { fill: rgba(220,38,38,.035); stroke: #dc2626; stroke-width: 2.5; vector-effect: non-scaling-stroke; }
.ecg-guided-target { fill: transparent; stroke: none; cursor: pointer; pointer-events: all; }
.ecg-guided-target:focus-visible { stroke: #dc2626; stroke-width: 2; vector-effect: non-scaling-stroke; }
@media (forced-colors: active) { .ecg-finding-marks ellipse { stroke: Highlight; } }
.ecg-settings { border-bottom: 1px solid var(--line); }
.ecg-settings summary { min-height: 44px; padding: 12px 16px; font-size: .8rem; cursor: pointer; }
.ecg-calipers .ecg-caliper-hit { fill: transparent; stroke: none; }
.ecg-calibrated .ecg-panel-heading { font-size: 20px; }
.ecg-calibrated .ecg-panel-tick { font-size: 17px; }
.ecg-panel-select { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 10px; padding: 8px; font-size: .85rem; }
.ecg-panel-select select { min-width: 0; width: 100%; min-height: 44px; border: 1px solid var(--line); border-radius: 8px; padding: 6px; color: var(--ink); background: var(--card); font: inherit; }
.ecg-fig .ecg-svg { overflow: hidden; }
.ecg-fig[data-ecg-fig="normal-12lead"] .ecg-media { overflow-x: auto; }
.ecg-fig[data-ecg-fig="normal-12lead"] .ecg-svg-wrap { min-width: 920px; max-width: none; }
.ecg-workbench-paper:has(.ecg-engine-12lead) .ecg-workbench-canvas { min-width: 920px; }
.ecg-workbench-paper { max-height: none; overflow-x: auto; overflow-y: hidden; }
.ecg-workbench .ecg-lightbox-close, .ecg-tool, .ecg-wavebtn, .ecg-step-chip { min-height: 44px; }
@media print {
  .ecg-panel-select { display: none; }
  .ecg-fig[data-ecg-fig="normal-12lead"] .ecg-svg-wrap { min-width: 0; }
}
@media (max-width: 700px) {
  .case-actions:has(#openDynamicEcg) { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-actions:has(#openDynamicEcg) .case-action { min-width: 0; min-height: 44px; white-space: normal; }
  .ecg-pattern-grid { grid-template-columns: minmax(0, 1fr); }
  .ecg-pattern { padding: 12px; }
  .ecg-fig { margin-block: 10px; }
  .ecg-fig .ecg-media { padding: 4px; }
  .ecg-workbench-tools { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: stretch; }
  .ecg-workbench-tools button, .ecg-workbench-tools select { padding: 7px; font-size: .72rem; }
  .ecg-workbench-paper { padding: 6px; }
  .ecg-caliper-inputs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 10px; }
  .ecg-caliper-inputs input { width: 100%; min-width: 0; }
}

/* Student interface: neutral reading surfaces and one consistent navigation hierarchy. */
html[data-theme][data-accent] {
  --bg: #f6f7f9; --card: #fff; --card-elevated: #fff;
  --ink: #202b38; --ink-soft: #647181; --line: #dfe4e9; --line-subtle: #edf0f3;
  --topbar-bg: #fff; --foot-bg: #f6f7f9; --home-hover: #f0f4f4; --hover-line: #bdcbc9;
  --ov-job-bg: #f2f6f5; --ov-job-line: #dbe6e2;
  --shadow-sm: 0 1px 2px rgba(20,35,50,.025); --shadow: 0 2px 8px rgba(20,35,50,.035);
  --shadow-lg: 0 10px 30px rgba(20,35,50,.08); --shadow-float: 0 14px 40px rgba(20,35,50,.13);
  --side-w: 248px; --radius-xl: 16px; --radius-lg: 14px; --radius-md: 10px;
  --side-muted: #536271; --side-sub: #758190; --side-label: #687585; --side-note: #768291;
  --pearls-bg: #f3f8f5; --pearls-line: #deebe3; --pitfalls-bg: #fffbf3; --pitfalls-line: #ede3cf;
}
html[data-theme="dark"][data-accent] {
  --bg: #111720; --card: #19222d; --card-elevated: #202b38;
  --ink: #e3e9f0; --ink-soft: #a1adbc; --line: #2c3745; --line-subtle: #25303d;
  --topbar-bg: #151d27; --foot-bg: #111720; --home-hover: #222e3b; --hover-line: #52646a;
  --ov-job-bg: #1b2a30; --ov-job-line: #34434b;
  --shadow-sm: none; --shadow: none; --shadow-lg: 0 10px 30px rgba(0,0,0,.16); --shadow-float: 0 14px 40px rgba(0,0,0,.3);
  --side-muted: #aeb9c7; --side-sub: #8a99ab; --side-label: #93a1b3; --side-note: #8a99ab;
  --pearls-bg: #1b2928; --pearls-line: #30433d; --pitfalls-bg: #2b2823; --pitfalls-line: #454034;
}
html[data-theme="light"][data-accent="emerald"] { --brand: #235c50; --brand-2: #235c50; --accent: #287263; --accent-2: #438575; --accent-rgb: 40,114,99; --on-fill: #fff; }
html[data-theme="dark"][data-accent="emerald"] { --brand: #9bcdbf; --brand-2: #9bcdbf; --accent: #8dc5b5; --accent-2: #8dc5b5; --accent-rgb: 141,197,181; --on-fill: #152923; }
html[data-weight="bold"] { --font-weight-body: 500; --font-weight-title: 650; }
html:not([data-weight="bold"]) { --font-weight-body: 400; --font-weight-title: 600; }
.ui-icon { width: 19px; height: 19px; display: block; flex: none; }
body { line-height: 1.65; }
body button { box-shadow: none; }
.main .stage { width: 100%; max-width: 1120px; margin-inline: auto; padding: 36px 40px 48px; }
.sidebar { background: var(--card); color: var(--ink); border-right: 1px solid var(--line); box-shadow: none; padding: 22px 16px 16px; }
.sidebar > .brand, .sidebar > .side-list, .sidebar > .side-footer { flex-shrink: 0; }
.brand { padding: 2px 8px 24px; gap: 10px; }
.brand-mark { width: 36px; height: 36px; border-radius: 10px; background: var(--brand-2); color: var(--on-fill); font-size: .94rem; font-weight: 700; box-shadow: none; }
.brand-text strong { color: var(--ink); font-size: .96rem; font-weight: 650; }
.brand-text span { font-size: .65rem; }
.brand:hover .brand-mark { transform: none; }
.side-list { gap: 6px; }
.side-item { min-height: 44px; padding: 10px 12px; font-size: .81rem; font-weight: 500; border-radius: 8px; }
.side-item .ico { display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 26px; flex: none; border-radius: 7px; background: var(--ov-job-bg); color: var(--brand-2); font-style: normal; }
/* Hybrid mono icons: original emoji kept in data.js for rollback, rendered as stroke SVG via app.js iconFor(). */
.side-item .ico .mono-ico { width: 16px; height: 16px; }
.side-item:hover { transform: none; background: var(--home-hover); color: var(--ink); }
.side-item.side-home { margin-bottom: 0; background: none; border-color: transparent; color: var(--ink); }
.side-item.active, .side-item.side-home.active { background: var(--ov-job-bg); border-color: transparent; color: var(--brand-2); box-shadow: inset 3px 0 0 var(--accent); }
.side-group { margin: 6px 0 0; }
.side-group > summary { min-height: 44px; padding: 12px 8px; cursor: pointer; font-size: .72rem; font-weight: 600; letter-spacing: .01em; text-transform: none; color: var(--side-label); line-height: 1.4; }
.side-group[open] > summary { color: var(--ink); }
.side-group .side-item { padding-left: 20px; }
.side-footer { border-color: var(--line); padding-top: 12px; margin-top: 24px; }
.side-btn { justify-content: flex-start; padding-inline: 10px; font-weight: 500; border-color: transparent; background: transparent; }
.side-btn:hover { background: var(--home-hover); color: var(--ink); border-color: transparent; }
.side-note { font-size: .67rem; line-height: 1.6; }
.topbar { display: grid; grid-template-columns: minmax(180px,1fr) auto auto; gap: 18px; padding: 14px 32px; background: var(--topbar-bg); box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
.topbar > .burger { display: none; }
.primary-nav { display: flex; align-items: center; gap: 3px; grid-column: 2; grid-row: 1; }
.primary-nav .home-btn { width: auto; min-width: 0; height: 44px; padding: 0 11px; font-size: .8rem; font-weight: 550; border: 0; border-radius: 8px; color: var(--ink-soft); background: transparent; gap: 7px; box-shadow: none; }
.primary-nav #homeBtn, .primary-nav #studyBtn, .primary-nav #shiftBtn, .primary-nav #ecgBtn { grid-column: auto; grid-row: auto; width: auto; min-width: 0; display: flex; align-items: center; justify-content: center; font-size: .8rem; padding: 0 11px; }
.primary-nav #homeBtn .header-label, .primary-nav #studyBtn .header-label, .primary-nav #shiftBtn .header-label, .primary-nav #ecgBtn .header-label { display: inline; font-size: inherit; }
.primary-nav .home-btn:hover { transform: none; color: var(--ink); background: var(--home-hover); box-shadow: none; }
.primary-nav .home-btn.active-nav, html[data-theme="dark"] .primary-nav .home-btn.active-nav { background: var(--ov-job-bg); color: var(--brand-2); border-color: transparent; box-shadow: none; }
.topbar > .searchwrap { grid-column: 1; grid-row: 1; width: 100%; max-width: 460px; min-width: 0; min-height: 44px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg); box-shadow: none; margin: 0; }
#searchInput { font-size: .84rem; }
.search-ico { opacity: 1; color: var(--ink-soft); }
.topbar > .tools-toggle { display: flex; grid-column: 3; grid-row: 1; min-width: 44px; width: 44px; height: 44px; padding: 0; border: 1px solid var(--line); border-radius: 9px; background: transparent; color: var(--ink-soft); box-shadow: none; }
.tools-toggle .header-label { display: none; }
.topbar > .topbar-tools { display: none; position: absolute; left: auto; top: calc(100% + 8px); right: 24px; width: 380px; max-width: calc(100vw - 24px); padding: 18px; margin: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--card); box-shadow: var(--shadow-float); }
.topbar > .topbar-tools.open { display: flex; flex-direction: column; align-items: stretch; gap: 14px; }
.topbar-tools .chips { justify-content: space-between; flex-wrap: wrap; }
.topbar-tools .pref-scale { font-size: 13px; white-space: nowrap; }
.topbar-tools .pref-tools { justify-content: center; background: var(--bg); border-radius: 8px; padding: 4px; }
.topbar-tools .accent-tools { border: 0; padding: 0; background: transparent; justify-content: center; }
.pref-btn, .chip, .patient-chip { box-shadow: none; font-weight: 550; border-width: 1px; border-radius: 8px; }
.accent-dot { width: 34px; height: 34px; }
.home-intro { padding: 8px 0 26px; max-width: 760px; margin-inline: 0; }
.home-eyebrow, .home-intro > span { color: var(--brand-2); font-size: .74rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.home-intro h1 { font-size: clamp(1.8rem,3vw,2.6rem); letter-spacing: -.035em; line-height: 1.16; margin: 10px 0 12px; max-width: 650px; font-weight: 650; }
.home-intro p { color: var(--ink-soft); max-width: 58ch; font-size: .96rem; line-height: 1.65; }
.home-meta { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 16px; color: var(--ink-soft); font-size: .73rem; }
.home-meta span + span::before { content: "·"; margin-right: 14px; opacity: .6; }
.home-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.home-actions button { min-height: 44px; border: 1px solid var(--line); border-radius: 9px; padding: 10px 16px; background: var(--card); color: var(--ink); font: inherit; font-size: .84rem; font-weight: 600; cursor: pointer; }
.home-actions button:first-child { background: var(--brand-2); border-color: var(--brand-2); color: var(--on-fill); }
.study-dashboard.study-dashboard-compact { background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: none; padding: 18px 22px; margin: 0 0 32px; gap: 20px; }
.study-dashboard-compact h2 { font-size: .95rem; font-weight: 600; margin: 0; }
.study-dashboard-compact .study-kicker { display: none; }
.study-dashboard-compact p { font-size: .79rem; }
.study-dashboard-compact .study-stats { width: 100%; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; }
.study-dashboard-compact .study-stat:first-child { border-left: 0; }
.study-dashboard-compact .study-stat:last-child strong { font-size: .95rem; color: var(--brand-2); }
.study-dashboard-compact .study-stat { min-width: 96px; border: 0; border-left: 1px solid var(--line); border-radius: 0; padding: 6px 14px; background: none; box-shadow: none; transform: none; }
.study-dashboard-compact .study-stat strong { color: var(--ink); font-weight: 600; font-size: 1.2rem; }
.study-dashboard-compact .study-stat span { color: var(--ink-soft); font-size: .72rem; font-weight: 500; letter-spacing: 0; text-transform: none; }
.study-dashboard-compact .study-stat.accent, html[data-theme="dark"] .study-dashboard-compact .study-stat.accent { background: var(--ov-job-bg); border: 0; border-radius: 8px; box-shadow: none; }
.study-dashboard-compact .study-stat.accent strong, .study-dashboard-compact .study-stat.accent span { color: var(--brand-2); }
.library-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px; }
.library-head h2 { font-size: 1.25rem; font-weight: 600; letter-spacing: -.02em; }
.library-head p, .library-head > span { font-size: .8rem; color: var(--ink-soft); }
.library-filters { margin: 0; padding: 0; }
.library-filters[open] { flex-basis: 100%; }
.library-head:has(.library-filters[open]) { flex-wrap: wrap; }
.library-filters > summary { cursor: pointer; min-height: 44px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink-soft); font-size: .78rem; }
.library-filters .patient-filter { flex-wrap: wrap; margin: 10px 0 0; overflow: visible; }
.home-group { margin-bottom: 30px; }
.group-title { font-size: .86rem; font-weight: 600; color: var(--ink-soft); letter-spacing: 0; text-transform: none; margin: 0 0 12px; }
.group-title span { border: 0; background: var(--line-subtle); color: var(--ink-soft); padding: 1px 7px; font-weight: 500; }
.cp-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
.cp-grid .cp-card { display: grid; grid-template-columns: auto minmax(0,1fr) auto; grid-template-rows: auto auto; align-content: center; align-items: center; gap: 5px 12px; min-height: 108px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 11px; background: var(--card); box-shadow: none; transition: border-color .15s, background .15s; }
.cp-grid .cp-card::before { display: none; }
.cp-grid .cp-card:hover { transform: none; background: var(--card); border-color: var(--accent); box-shadow: var(--shadow); }
/* Hybrid: show mono SVG tile instead of colorful emoji. Rollback: restore `display:none` to re-hide. */
.cp-card .cp-ico { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 9px; background: var(--ov-job-bg); color: var(--brand-2); grid-column: 1; grid-row: 1; justify-self: start; margin: 0; }
.cp-card .cp-ico .mono-ico { width: 19px; height: 19px; }
.cp-hero .cp-ico-lg { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 12px; background: var(--ov-job-bg); color: var(--brand-2); margin-bottom: 10px; }
.cp-hero .cp-ico-lg .mono-ico { width: 24px; height: 24px; }
.cp-grid .cp-card h3 { grid-column: 2; grid-row: 1; margin: 0; padding: 0; color: var(--ink); font-weight: 600; font-size: .97rem; line-height: 1.4; }
.cp-grid .cp-card p { grid-column: 2 / -1; grid-row: 2; margin: 0; font-size: .78rem; line-height: 1.5; color: var(--ink-soft); }
.cp-grid .cp-card .cp-count { position: static; grid-column: 3; grid-row: 1; align-self: center; color: var(--ink-soft); background: transparent; border: 0; border-radius: 0; padding: 0; font-size: .66rem; font-weight: 500; white-space: nowrap; }
.cp-grid .cp-reviewed, .cp-grid .cp-saved { position: static; grid-column: 2 / -1; color: var(--brand-2); font-size: .7rem; margin: 2px 0 0; }
.cp-hero { background: transparent; border: 0; box-shadow: none; padding: 0 0 26px; margin-bottom: 0; border-radius: 0; }
.cp-hero::before, .cp-hero::after { display: none; }
.cp-hero h1 { color: var(--ink); font-size: clamp(1.7rem,3vw,2.3rem); line-height: 1.2; letter-spacing: -.03em; font-weight: 650; }
.cp-hero .tag, .cp-hero .ecg-subhead { color: var(--ink-soft); font-size: .96rem; max-width: 70ch; line-height: 1.65; }
.cp-hero .back-btn { position: static; display: inline-flex; border: 0; background: none; color: var(--ink-soft); padding: 0; margin: 0 0 14px; min-height: 36px; font-size: .77rem; font-weight: 500; box-shadow: none; }
.case-rail { display: block; border: 1px solid var(--ov-job-line); border-left: 3px solid var(--accent); background: var(--ov-job-bg); padding: 20px 24px; border-radius: 12px; box-shadow: none; margin-bottom: 20px; }
.case-rail-title { margin-bottom: 10px; display: flex; align-items: center; gap: 12px; }
/* Hybrid: mono bolt tile. Rollback: restore `display:none`. */
.case-rail-title > span { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; flex: none; border-radius: 9px; background: rgba(var(--accent-rgb), 0.14); color: var(--brand-2); }
.case-rail-title > span .mono-ico { width: 18px; height: 18px; }
.case-rail-title strong { font-size: .98rem; font-weight: 600; color: var(--ink); }
.case-rail-title small { font-size: .75rem; color: var(--ink-soft); }
.case-steps { display: grid; grid-template-columns: 1fr; gap: 8px; }
.case-steps li { font-size: .86rem; line-height: 1.6; padding: 0; background: none; border: 0; }
.case-steps li > span { background: transparent; color: var(--brand-2); font-size: .78rem; width: 22px; height: auto; border: 0; }
.case-actions { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.case-action, .case-action.primary { min-height: 44px; flex: 0 1 auto; border: 1px solid var(--line); color: var(--ink); background: var(--card); border-radius: 8px; font-weight: 550; font-size: .77rem; padding: 8px 12px; box-shadow: none; white-space: normal; }
.presentation-study-group { scroll-margin-top: 140px; }
.medication-safety { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 8px; font-size: .82rem; color: var(--ink-soft); }
.medication-safety summary { min-height: 44px; padding: 10px 0; cursor: pointer; font-weight: 550; }
.medication-safety p + p { margin-top: 8px; }
.clinical-safety-note { margin-top: 16px; color: var(--ink-soft); font-size: .8rem; }
.presentation-toc { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 24px; padding: 0 0 18px; border-bottom: 1px solid var(--line); }
.section-jump { min-height: 44px; border: 0; border-radius: 8px; background: transparent; color: var(--ink-soft); font: inherit; font-size: .79rem; font-weight: 500; padding: 8px 11px; cursor: pointer; }
.section-jump:hover { color: var(--brand-2); background: var(--ov-job-bg); }
.section-card { border: 1px solid var(--line); border-radius: 12px; box-shadow: none; margin-bottom: 14px; overflow: hidden; }
.sec-head { padding: 18px 22px; min-height: 62px; background: var(--card); border: 0; gap: 10px; color: var(--ink); font-size: 1rem; font-weight: 600; }
.sec-head:hover { background: var(--home-hover); }
/* Hybrid: section headers stay text-only by design (clean). Original emoji still passed by JS but hidden. */
.sec-head .sec-ico { display: none; }
.sec-head .arrow { color: var(--ink-soft); font-size: .6rem; opacity: .8; }
/* ── Distinct per-presentation icons (each subject keeps its own emoji) + mono system chrome ── */
.mono-ico { display: block; flex: none; }
.emoji-ico { display: inline-block; line-height: 1; font-style: normal; }
.cp-ico .mono-ico, .cp-ico-lg .mono-ico, .side-item .ico .mono-ico, .case-rail-title .mono-ico, .study-topic-ico .mono-ico { stroke: currentColor; }
.cp-ico .emoji-ico { font-size: 1.35rem; }
.cp-ico-lg .emoji-ico { font-size: 1.9rem; }
.side-item .ico .emoji-ico { font-size: 1.05rem; }
.study-topic-ico .emoji-ico { font-size: 1.1rem; }
.related-chip .emoji-ico { margin-right: 4px; }
.study-topic-ico { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; flex: none; border-radius: 8px; background: var(--ov-job-bg); color: var(--brand-2); }
.study-topic-ico .mono-ico { width: 17px; height: 17px; }
.related-chip .mono-ico { width: 14px; height: 14px; display: inline-block; vertical-align: -2px; margin-right: 4px; }
/* Severity dots replace 🔴🟠🟢 emoji — text label preserved for a11y/print. */
.sev-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; flex: none; background: var(--ink-soft); }
.sev-critical > h4 .sev-dot, .sev-dot.sev-critical, .dx-card.sev-critical h4 .sev-dot { background: var(--critical); }
.sev-emergent > h4 .sev-dot, .sev-dot.sev-emergent, .dx-card.sev-emergent h4 .sev-dot { background: var(--emergent); }
.sev-common > h4 .sev-dot, .sev-dot.sev-common, .dx-card.sev-common h4 .sev-dot { background: var(--common); }
.ecg-pattern header .sev-tag { display: inline-flex; align-items: center; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 7px; }
.chip .sev-dot { width: 8px; height: 8px; }
.pref-btn .mono-ico { width: 16px; height: 16px; }
.theme-ico { display: inline-flex; }
.theme-ico .mono-ico { width: 16px; height: 16px; }
/* Disclaimer + point icons: mono tiles (replaces ⚠️🩺⚖️📚 colorful emoji). */
.badge-icon, .point-ico { display: inline-flex; align-items: center; justify-content: center; font-style: normal; }
.badge-icon .mono-ico, .point-ico .mono-ico { width: 18px; height: 18px; }
.point-ico { width: 34px; height: 34px; flex: none; border-radius: 9px; background: var(--ov-job-bg); color: var(--brand-2); }
.sec-body { padding: 0 22px 22px; border-top: 0; }
.section-card.closed .sec-head { background: var(--card); }
.cluster, .wu-col { border: 0; background: var(--bg); border-radius: 8px; padding: 15px 16px; box-shadow: none; }
.cluster h4, .wu-col h4 { font-size: .88rem; font-weight: 600; color: var(--ink); letter-spacing: 0; text-transform: none; }
.cluster p, .wu-col li, .disp-col li, .plain-list li, .dx-key, .rf-item { font-size: .86rem; line-height: 1.65; }
.dx-card, .dx-card.sev-critical, .dx-card.sev-emergent, .dx-card.sev-common { background: var(--card); box-shadow: none; border-width: 1px; border-left-width: 3px; border-radius: 8px; padding: 15px 16px; }
.dx-card h4 { font-size: .88rem; line-height: 1.5; font-weight: 600; }
.sev-tag { font-size: .64rem; font-weight: 600; letter-spacing: 0; }
.rf-box { border-radius: 9px; padding: 16px; }
.rf-item { border-radius: 7px; padding: 11px 12px; }
.pp-box { border-radius: 9px; border-width: 1px; }
.learning-loop, .personal-plan, .resus-card, .management-pivots { background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: none; margin: 24px 0; padding: 22px; }
.learning-kicker, .study-kicker, .resus-kicker, .ov-kicker { font-size: .67rem; font-weight: 600; letter-spacing: .06em; }
.recall-card, .resus-grid > div, .pivot-grid > div { border: 0; border-radius: 8px; background: var(--bg); }
.study-tabs button span { background: var(--line-subtle); color: var(--ink-soft); font-weight: 550; }
.back-btn, .shift-sheet .review-btn, .personal-plan .save-topic { border: 1px solid var(--line); border-radius: 8px; color: var(--brand-2); background: var(--card); font-weight: 550; box-shadow: none; }
.study-tabs { border-bottom: 1px solid var(--line); padding: 0 0 12px; margin-bottom: 28px; gap: 6px; }
.study-tabs button { border: 0; background: transparent; border-radius: 8px; padding: 10px 16px; font-size: .83rem; font-weight: 550; min-height: 44px; }
.study-tabs button.active, html[data-theme="dark"] .study-tabs button.active { background: var(--ov-job-bg); color: var(--brand-2); box-shadow: none; }
.study-page, .case-practice { border: 1px solid var(--line); border-radius: 14px; background: var(--card); box-shadow: none; }
.study-page-head, .case-practice-head { background: transparent; color: var(--ink); border-bottom: 1px solid var(--line); }
.study-page-head h1, .case-practice-head h1, .case-practice-head h2 { color: var(--ink); font-size: 1.65rem; letter-spacing: -.025em; font-weight: 600; }
.study-page-head p, .case-practice-head p { color: var(--ink-soft); font-size: .88rem; line-height: 1.65; }
.study-empty { text-align: center; padding: 44px 24px; color: var(--ink-soft); font-size: .9rem; }
.study-topic, .quiz-option { border-width: 1px; border-radius: 9px; box-shadow: none; font-weight: 500; }
.quiz-question { padding-block: 22px; border: 0; background: var(--bg); border-radius: 9px; }
.quiz-question legend { float: left; width: 100%; padding: 0; margin-bottom: 10px; }
.quiz-question legend + .quiz-options { clear: both; }
.quiz-question legend span { background: var(--ov-job-bg); color: var(--brand-2); font-weight: 600; }
.quiz-question legend { font-weight: 600; font-size: .96rem; }
.quiz-option { min-height: 48px; font-size: .85rem; line-height: 1.6; }
.shift-topline { gap: 12px; margin-bottom: 22px; }
.shift-topline select { border-width: 1px; border-radius: 9px; min-height: 44px; background: var(--card); font-weight: 500; }
.shift-sheet { padding: 26px; border: 1px solid var(--line); border-radius: 14px; box-shadow: none; }
.shift-sheet-head h1 { font-weight: 600; letter-spacing: -.025em; }
.shift-warning { background: var(--bg); color: var(--ink-soft); border: 0; border-radius: 8px; padding: 12px 14px; line-height: 1.6; }
.shift-grid { gap: 22px; }
.shift-grid section { background: var(--bg); border: 0; border-radius: 9px; padding: 18px; }
.shift-grid .shift-red { border-left: 3px solid var(--critical); }
.shift-grid h2 { font-size: .94rem; font-weight: 600; }
.shift-grid li, .shift-grid p { font-size: .86rem; line-height: 1.65; }
.ecg-step-nav { padding: 0 0 18px; margin-bottom: 22px; border-bottom: 1px solid var(--line); }
.ecg-step-chip { background: var(--card); border: 1px solid var(--line); border-radius: 8px; box-shadow: none; font-weight: 500; }
.ecg-step-chip span { background: var(--ov-job-bg); color: var(--brand-2); box-shadow: none; }
.ecg-pattern-index { margin: 18px 0; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
.ecg-pattern-index > summary { min-height: 48px; cursor: pointer; padding: 12px 18px; font-size: .9rem; font-weight: 550; }
.ecg-pattern-index .ecg-killers { padding: 0 18px 18px; }
.ecg-killer, .ecg-pattern { box-shadow: none; border-radius: 10px; }
.ecg-fig { border-radius: 10px; }
.ecg-tool, .ecg-wavebtn { box-shadow: none; font-weight: 550; border-width: 1px; border-radius: 8px; }
.foot { border-top: 1px solid var(--line); color: var(--ink-soft); background: var(--foot-bg); padding: 24px 40px; }
.foot p { max-width: 1000px; margin-inline: auto; font-size: .72rem; line-height: 1.7; }
@media (max-width: 1160px) and (min-width: 921px) {
  .topbar { padding-inline: 22px; gap: 10px; grid-template-columns: minmax(120px,1fr) auto auto; }
  .primary-nav .home-btn { padding-inline: 8px; }
  /* Hybrid fix: keep header SVG visible on tablet — was `display:none` (bug). */
  .primary-nav .ui-icon { display: block; width: 17px; height: 17px; }
}
@media (max-width: 920px) {
  .main .stage { padding: 28px 24px 40px; }
  .topbar { grid-template-columns: 44px minmax(0,1fr) 44px; grid-template-rows: 44px 44px; padding: max(10px,env(safe-area-inset-top)) 20px 8px; gap: 8px 10px; }
  .topbar > .burger { display: flex; grid-column: 1; grid-row: 1; width: 44px; min-width: 44px; height: 44px; min-height: 44px; border: 0; background: transparent; color: var(--ink-soft); border-radius: 8px; box-shadow: none; align-items: center; justify-content: center; }
  .topbar > .searchwrap { grid-column: 2; grid-row: 1; max-width: none; }
  .topbar > .tools-toggle { grid-column: 3; grid-row: 1; border: 0; }
  .topbar > .primary-nav { grid-column: 1 / -1; grid-row: 2; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 3px; width: 100%; }
  .primary-nav #homeBtn, .primary-nav #studyBtn, .primary-nav #shiftBtn, .primary-nav #ecgBtn { width: 100%; padding: 0 6px; font-size: min(.75rem,13px); }
  .primary-nav .home-btn { justify-content: center; padding: 0 6px; height: 44px; min-height: 44px; width: 100%; font-size: .8rem; }
  .primary-nav .home-btn .header-label { display: inline; }
  .topbar > .topbar-tools { right: 12px; width: 360px; max-width: calc(100vw - 24px); }
  .study-dashboard-compact { flex-wrap: wrap; }
  .cp-hero { padding: 0 0 22px; }
}
@media (max-width: 600px) {
  .main .stage { padding: 24px 16px 36px; }
  .topbar { padding-inline: 12px; gap: 6px; }
  .primary-nav .ui-icon { width: 16px; height: 16px; }
  .primary-nav .home-btn { font-size: .75rem; gap: 5px; }
  .topbar > .searchwrap { min-height: 44px; border-radius: 8px; padding: 8px 10px; }
  #searchInput { font-size: .8rem; }
  .search-kbd { display: none; }
  .home-intro { padding: 0 0 24px; }
  .home-intro h1 { font-size: 1.9rem; margin-top: 9px; }
  .home-intro p { font-size: .9rem; }
  .home-actions { margin-top: 18px; gap: 8px; }
  .home-actions button { padding-inline: 13px; font-size: .79rem; }
  .study-dashboard.study-dashboard-compact { padding: 16px; gap: 14px; margin-bottom: 26px; }
  .study-dashboard-compact .study-stats { width: 100%; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 6px; }
  .study-dashboard-compact .study-stat { min-width: 0; padding: 7px 4px; }
  .study-dashboard-compact .study-stat:first-child { border-left: 0; }
  .study-dashboard-compact .study-stat strong { font-size: 1.1rem; }
  .study-dashboard-compact .study-stat span { font-size: .7rem; }
  .library-head { flex-wrap: wrap; gap: 4px; margin-bottom: 8px; }
  .library-head h2 { font-size: 1.17rem; }
  .library-filters { margin: 8px 0 10px; }
  .cp-grid { grid-template-columns: minmax(0,1fr); gap: 9px; }
  .cp-grid .cp-card { min-height: 96px; padding: 16px; border-radius: 10px; gap: 4px 10px; }
  .cp-grid .cp-card h3 { font-size: .93rem; }
  .cp-grid .cp-card p { font-size: .77rem; }
  .cp-card .cp-ico { width: 30px; height: 30px; border-radius: 8px; }
  .cp-card .cp-ico .mono-ico { width: 17px; height: 17px; }
  .group-title { font-size: .82rem; }
  .cp-hero h1 { font-size: 1.8rem; }
  .cp-hero .tag { font-size: .9rem; }
  .case-rail { padding: 16px; }
  .case-steps li { font-size: .83rem; }
  .case-actions { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .case-action { width: 100%; font-size: .75rem; }
  .presentation-toc { gap: 2px; margin-bottom: 18px; padding-bottom: 12px; }
  .section-jump { font-size: .75rem; padding: 7px 9px; }
  .sec-head { padding: 16px; font-size: .95rem; min-height: 60px; }
  .sec-body { padding: 0 16px 18px; }
  .cluster p, .wu-col li, .disp-col li, .plain-list li, .dx-key, .rf-item { font-size: .84rem; }
  .dx-grid, .cluster-grid, .wu-grid, .disp-grid { grid-template-columns: minmax(0,1fr); }
  .dx-card h4 { display: flex; flex-wrap: wrap; gap: 4px 8px; }
  .learning-loop, .personal-plan { padding: 18px; }
  .study-tabs { gap: 4px; margin-bottom: 22px; }
  .study-tabs button { padding-inline: 10px; font-size: .77rem; }
  .study-page-head h1, .case-practice-head h1 { font-size: 1.5rem; }
  .shift-sheet { padding: 18px; }
  .shift-grid { gap: 14px; }
  .shift-grid section { padding: 16px; }
  .foot { padding: 22px 18px calc(22px + env(safe-area-inset-bottom)); }
}
@media (prefers-reduced-motion: reduce) { .cp-grid .cp-card { transition: none; } }
@media print {
  .primary-nav, .presentation-toc, .home-actions, .library-filters, .ecg-pattern-index { display: none !important; }
  .main .stage { padding: 0; max-width: none; }
  .cp-hero, .section-card, .study-page, .case-practice, .shift-sheet, .shift-grid section { background: #fff !important; color: #111 !important; box-shadow: none !important; }
  .cp-hero h1, .cp-hero .tag { color: #111 !important; }
}

/* Preserve legibility of ECG lettering rather than shrinking a full paper to phone width. */
.ecg-fig .ecg-media { overflow-x: auto; }
.ecg-fig .ecg-svg-wrap { min-width: 560px; }
.ecg-media:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.ecg-workbench-paper:has(.ecg-case-12lead) .ecg-workbench-canvas { min-width: 640px; }
.ecg-comparison { padding: 12px; border: 1px solid var(--line); border-radius: 10px; margin-block: 12px; }
.ecg-comparison h4 { margin: 0 0 10px; }
.ecg-comparison dt { font-weight: 700; margin-top: 10px; }
.ecg-comparison dd { margin: 4px 0 0; line-height: 1.6; }
.evidence-note { line-height: 1.6; font-size: .85rem; }
@media print {
  .ecg-fig .ecg-svg-wrap { min-width: 0 !important; }
  .ecg-fig .ecg-media { overflow: visible; }
}

.ecg-paper-help { margin: 0; padding: 8px 16px; font-size: .75rem; color: var(--ink-soft); }