:root {
  --ink: #17231e;
  --muted: #6b756f;
  --paper: #f4f1e9;
  --surface: #fffdf8;
  --line: #dcd9cf;
  --green: #185b46;
  --green-2: #287a5f;
  --green-action: #185b46;
  --green-text: #185b46;
  --mint: #dceadf;
  --gold: #d39b3c;
  --gold-soft: #f5e8c7;
  --red: #a34b40;
  --red-soft: #f6e1dc;
  --surface-solid: #fff;
  --surface-panel: rgba(255,253,248,.9);
  --surface-control: #fff;
  --surface-subtle: #ece9e0;
  --surface-selected: #f3f9f5;
  --surface-success: #eff8f2;
  --surface-warning: #fffaf0;
  --surface-error: #fff3f0;
  --surface-explanation: #eef6f1;
  --surface-annulled: #fff8e8;
  --track: #e6e2d8;
  --topbar: rgba(244,241,233,.9);
  --nav-active: rgba(255,255,255,.7);
  --panel-border: rgba(23,35,30,.1);
  --body-glow: rgba(211,155,60,.16);
  --hero-bg: #17231e;
  --hero-muted: rgba(255,255,255,.65);
  --gold-ink: #8a5c0a;
  --audit-note: #7c5d1f;
  --shadow: 0 18px 50px rgba(23, 35, 30, .08);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { color-scheme: light; scroll-behavior: smooth; }
html[data-theme="dark"] {
  color-scheme: dark;
  --ink: #edf4f0;
  --muted: #a8b6af;
  --paper: #0e1512;
  --surface: #17211d;
  --line: #34433c;
  --green: #50ad88;
  --green-2: #2f8063;
  --green-action: #237052;
  --green-text: #78cdaa;
  --mint: #203d32;
  --gold: #e3ab4e;
  --gold-soft: #3e311c;
  --red: #e47f72;
  --red-soft: #402723;
  --surface-solid: #1b2722;
  --surface-panel: rgba(23,33,29,.94);
  --surface-control: #1b2722;
  --surface-subtle: #26332d;
  --surface-selected: #1c352b;
  --surface-success: #18352a;
  --surface-warning: #392f1d;
  --surface-error: #3b2421;
  --surface-explanation: #183129;
  --surface-annulled: #382e1c;
  --track: #2b3933;
  --topbar: rgba(14,21,18,.91);
  --nav-active: rgba(255,255,255,.08);
  --panel-border: rgba(220,236,228,.1);
  --body-glow: rgba(211,155,60,.09);
  --hero-bg: #070c0a;
  --hero-muted: rgba(237,244,240,.68);
  --gold-ink: #f0c46f;
  --audit-note: #e1bd74;
  --shadow: 0 18px 55px rgba(0,0,0,.3);
}
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% -10%, var(--body-glow), transparent 28rem),
    var(--paper);
  font: 15px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  transition: color .2s ease, background-color .2s ease;
}
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { color: inherit; }
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px var(--body-glow);
}
.mode-card:has(input:focus-visible),
.check-grid label:has(input:focus-visible),
.year-grid label:has(input:focus-visible) {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px var(--body-glow);
}
.segmented label:has(input:focus-visible) span {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}
.topbar {
  position: sticky; top: 0; z-index: 50;
  min-height: 76px; display: flex; align-items: center; justify-content: space-between;
  padding: 12px max(24px, calc((100vw - 1280px) / 2));
  border-bottom: 1px solid var(--panel-border);
  background: var(--topbar); backdrop-filter: blur(18px);
}
.brand { display: inline-flex; gap: 12px; align-items: center; }
.brand-mark {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 13px; color: #fff; background: var(--hero-bg);
  font: 700 24px/1 Georgia, serif; box-shadow: 0 6px 20px rgba(23,35,30,.16);
}
.brand strong, .brand small { display: block; }
.brand strong { font-family: Georgia, serif; font-size: 18px; letter-spacing: -.02em; }
.brand small { color: var(--muted); font-size: 11px; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a { padding: 10px 15px; border-radius: 10px; color: var(--muted); font-weight: 650; }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.theme-toggle {
  min-height: 38px; display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 11px; border: 1px solid var(--line); border-radius: 10px;
  color: var(--muted); background: var(--surface-panel); cursor: pointer;
  font-size: 12px; font-weight: 750; transition: .18s ease;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--muted); }
.theme-toggle:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.theme-icon { width: 18px; font-size: 17px; line-height: 1; text-align: center; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--ink); background: var(--nav-active); }
.nav-toggle { display: none; border: 0; background: none; font-size: 22px; }
.page-shell { width: min(1280px, calc(100% - 48px)); margin: 0 auto; padding: 44px 0 80px; }
.hero, .page-heading, .result-hero {
  display: flex; align-items: end; justify-content: space-between; gap: 36px;
  margin-bottom: 32px;
}
.hero h1, .page-heading h1, .result-hero h1 {
  margin: 6px 0 10px; font: 700 clamp(38px, 5vw, 68px)/.98 Georgia, serif;
  letter-spacing: -.045em;
}
.page-heading h1, .result-hero h1 { font-size: clamp(34px, 4vw, 54px); }
.hero p, .page-heading p, .result-hero p { max-width: 720px; margin: 0; color: var(--muted); font-size: 17px; }
.eyebrow { color: var(--green-text); font-size: 11px; font-weight: 850; text-transform: uppercase; letter-spacing: .13em; }
.hero-actions, .result-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.button {
  min-height: 44px; display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 17px; border: 1px solid transparent; border-radius: 11px;
  cursor: pointer; font-weight: 750; transition: .18s ease;
}
.button:hover { transform: translateY(-1px); }
.button.primary { color: #fff; background: var(--green-action); box-shadow: 0 9px 24px rgba(24,91,70,.18); }
.button.primary:hover { background: var(--green-2); }
.button.quiet { border-color: var(--line); background: var(--surface-panel); }
.button.danger { color: #fff; background: var(--red); box-shadow: 0 9px 24px rgba(163,75,64,.18); }
.button.danger:hover { filter: brightness(1.05); }
.button.small { min-height: 36px; padding: 7px 12px; font-size: 13px; }
.button.wide { width: 100%; }
.nav-user {
  display: inline-flex; align-items: center; gap: 8px; max-width: 180px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.user-avatar {
  width: 28px; height: 28px; display: inline-grid; place-items: center;
  border-radius: 50%; color: #fff; background: var(--green-action);
  font-size: 12px; font-weight: 850; flex: 0 0 auto;
}
.user-avatar.image { object-fit: cover; }
.avatar-1 { background: #185b46; }
.avatar-2 { background: #1f6f8b; }
.avatar-3 { background: #6b4f9a; }
.avatar-4 { background: #a34b40; }
.avatar-5 { background: #b87a0e; }
.avatar-6 { background: #2f6b3a; }
.avatar-7 { background: #0f766e; }
.avatar-8 { background: #7c3aed; }
.avatar-9 { background: #be123c; }
.avatar-10 { background: #0369a1; }
.avatar-11 { background: #4d7c0f; }
.avatar-12 { background: #9a3412; }
.auth-shell { min-height: 60vh; display: grid; place-items: center; }
.auth-card { width: min(460px, 100%); }
.auth-card h1 { margin: 4px 0 0; font: 700 34px/1.05 Georgia, serif; letter-spacing: -.03em; }
.auth-form { display: grid; gap: 14px; }
.auth-form label span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 11px; font-weight: 800; }
.auth-form input {
  width: 100%; height: 44px; padding: 8px 11px; border: 1px solid var(--line);
  border-radius: 10px; background: var(--surface-control); color: var(--ink);
}
.auth-divider {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center;
  margin: 18px 0; color: var(--muted); font-size: 12px; font-weight: 700;
}
.auth-divider::before, .auth-divider::after { content: ""; height: 1px; background: var(--line); }
.auth-switch { margin: 18px 0 0; color: var(--muted); text-align: center; }
.google-button { gap: 8px; }
.profile-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: 20px; align-items: start; }
.danger-panel { border-color: color-mix(in srgb, var(--red) 35%, var(--panel-border)); }
.avatar-picker { margin: 0; padding: 0; border: 0; }
.avatar-picker legend { margin-bottom: 10px; color: var(--muted); font-size: 11px; font-weight: 800; }
.avatar-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; }
.avatar-option { position: relative; cursor: pointer; }
.avatar-option input { position: absolute; opacity: 0; }
.avatar-option .user-avatar { width: 44px; height: 44px; font-size: 14px; }
.avatar-option:has(input:checked) .user-avatar {
  outline: 3px solid var(--gold); outline-offset: 2px;
}
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.metric-card, .panel {
  border: 1px solid var(--panel-border); border-radius: var(--radius);
  background: var(--surface-panel); box-shadow: var(--shadow);
}
.metric-card { position: relative; overflow: hidden; padding: 22px; }
.metric-card::after {
  content: ""; position: absolute; width: 90px; height: 90px; right: -34px; bottom: -46px;
  border-radius: 50%; background: rgba(24,91,70,.07);
}
.metric-card.accent { color: #fff; background: var(--green-action); }
.metric-card.danger { background: var(--red-soft); }
.metric-card span, .metric-card small { display: block; }
.metric-card span { color: var(--muted); font-size: 12px; font-weight: 750; text-transform: uppercase; letter-spacing: .06em; }
.metric-card.accent span, .metric-card.accent small { color: rgba(255,255,255,.72); }
.metric-card strong { display: block; margin: 6px 0 4px; font: 700 34px/1 Georgia, serif; }
.metric-card small { color: var(--muted); }
.panel { padding: 24px; margin-bottom: 20px; }
.panel h2 { margin: 2px 0; font: 700 24px/1.1 Georgia, serif; letter-spacing: -.02em; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(320px, .85fr); gap: 20px; }
.performance-chart { width: 100%; height: 260px; display: block; }
.chart-panel { position: relative; }
.chart-tooltip {
  position: absolute; z-index: 6; max-width: 230px; padding: 9px 12px;
  border-radius: 10px; color: #fff; background: var(--hero-bg);
  font-size: 11px; pointer-events: none; box-shadow: var(--shadow);
}
.chart-tooltip strong, .chart-tooltip span { display: block; }
.chart-tooltip span { margin-top: 2px; color: var(--hero-muted); }
.status-pill {
  display: inline-flex; width: max-content; padding: 5px 9px; border-radius: 999px;
  color: var(--green-text); background: var(--mint); font-size: 11px; font-weight: 800;
}
.status-pill.active { color: var(--gold-ink); background: var(--gold-soft); }
.status-pill.warning { color: var(--gold-ink); background: var(--gold-soft); }
.weight-list { display: grid; gap: 11px; }
.weight-row { display: grid; grid-template-columns: 1fr 84px 42px; gap: 9px; align-items: center; font-size: 12px; }
.weight-row span { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.bar, .coverage-cell { height: 6px; overflow: hidden; border-radius: 99px; background: var(--track); }
.bar i, .coverage-cell i, .result-bar i, .exam-progress i { display: block; height: 100%; border-radius: inherit; background: var(--gold); }
.fine-print { margin: 18px 0 0; color: var(--muted); font-size: 12px; }
.text-link { color: var(--green-text); font-weight: 800; }
.subject-table-wrap { overflow-x: auto; }
.subject-table { width: 100%; border-collapse: collapse; }
.subject-table th { color: var(--muted); font-size: 11px; text-align: left; text-transform: uppercase; letter-spacing: .06em; }
.subject-table th, .subject-table td { padding: 12px 9px; border-bottom: 1px solid var(--line); }
.subject-table tr:last-child td { border-bottom: 0; }
.subject-code {
  display: inline-grid; min-width: 31px; height: 25px; place-items: center; margin-right: 9px;
  border-radius: 7px; color: var(--green-text); background: var(--mint); font-size: 10px; font-weight: 850;
}
.accuracy-chip { display: inline-flex; padding: 4px 8px; border-radius: 8px; background: var(--surface-subtle); font-weight: 800; }
.accuracy-chip.good { color: var(--green-text); background: var(--mint); }
.accuracy-chip.risk { color: var(--red); background: var(--red-soft); }
.coverage-cell { width: 140px; }
.coverage-cell i { background: var(--green); }
.muted { color: var(--muted); }
.session-list { display: grid; }
.session-row {
  display: grid; grid-template-columns: 42px 1fr auto 20px; gap: 13px; align-items: center;
  padding: 13px 2px; border-bottom: 1px solid var(--line);
}
.session-row:last-child { border-bottom: 0; }
.session-row:hover .session-main strong { color: var(--green-text); }
.session-icon, .mode-icon {
  width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px;
  color: #fff; background: var(--hero-bg); font: 700 16px Georgia, serif;
}
.session-main strong, .session-main small { display: block; }
.session-main small { color: var(--muted); }
.empty-state { min-height: 160px; display: grid; place-content: center; gap: 5px; text-align: center; color: var(--muted); }
.empty-state.compact { min-height: 80px; }
.empty-state strong { color: var(--ink); }
.session-builder { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; align-items: start; }
.builder-summary { position: sticky; top: 96px; }
.builder-summary h2 { margin-bottom: 20px; }
.summary-stat { display: flex; justify-content: space-between; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.summary-stat span { color: var(--muted); }
.summary-stat strong { text-align: right; }
.mode-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 20px; }
.mode-card {
  position: relative; display: grid; grid-template-columns: 42px 1fr; column-gap: 12px;
  align-items: center; min-height: 112px; padding: 16px; border: 1px solid var(--line);
  border-radius: 14px; background: var(--surface-control); cursor: pointer; transition: .18s ease;
}
.mode-card.real { grid-column: 1 / -1; }
.mode-card:hover { border-color: #aab6af; transform: translateY(-1px); }
.mode-card:has(input:checked) { border-color: var(--green); box-shadow: inset 0 0 0 1px var(--green); background: var(--surface-selected); }
.mode-card input { position: absolute; opacity: 0; }
.mode-card strong, .mode-card small { display: block; }
.mode-card small { grid-column: 2; color: var(--muted); }
.mode-card:has(input:checked) .mode-icon { background: var(--green-action); }
.option-section { padding: 8px 0 22px; margin-bottom: 16px; border-bottom: 1px solid var(--line); }
.range-line { display: grid; grid-template-columns: 1fr 54px; gap: 16px; align-items: center; margin-top: 14px; }
.preset-buttons { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.preset-buttons button {
  min-width: 42px; min-height: 36px; padding: 6px 10px; border: 1px solid var(--line);
  border-radius: 9px; background: var(--surface-control); cursor: pointer;
  font-size: 12px; font-weight: 750; transition: .15s ease;
}
.preset-buttons button:hover:not(:disabled) { border-color: var(--green); }
.preset-buttons button.active { color: var(--green-text); border-color: var(--green); background: var(--mint); }
.preset-buttons button:disabled { opacity: .45; cursor: default; }
.weight-toggle { margin-top: 14px; }
input[type="range"] { width: 100%; accent-color: var(--green); }
output { display: grid; height: 44px; place-items: center; border-radius: 10px; background: var(--mint); font-weight: 850; }
.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; padding: 5px; margin-top: 12px; border-radius: 12px; background: var(--surface-subtle); }
.segmented label { position: relative; }
.segmented input { position: absolute; opacity: 0; }
.segmented span { display: block; padding: 9px; border-radius: 9px; text-align: center; cursor: pointer; font-weight: 700; }
.segmented label:has(input:checked) span { background: var(--surface-control); box-shadow: 0 3px 10px rgba(0,0,0,.12); }
.filter-details { border-bottom: 1px solid var(--line); }
.filter-details summary { display: flex; justify-content: space-between; padding: 16px 0; cursor: pointer; font-weight: 800; }
.filter-details summary span { color: var(--muted); font-size: 12px; font-weight: 500; }
.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; padding-bottom: 18px; }
.check-grid label, .year-grid label {
  display: flex; gap: 8px; align-items: center; padding: 9px; border: 1px solid var(--line);
  border-radius: 10px; background: var(--surface-control); cursor: pointer;
}
.check-grid label:has(input:checked), .year-grid label:has(input:checked) { border-color: var(--green); background: var(--mint); }
.check-grid input, .year-grid input { accent-color: var(--green); }
.year-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; padding-bottom: 18px; }
.form-error { min-height: 22px; margin: 12px 0; color: var(--red); font-size: 12px; }
.exam-header {
  position: sticky; top: 76px; z-index: 30; display: grid; grid-template-columns: auto minmax(120px, 1fr) auto auto;
  gap: 20px; align-items: center; margin: -24px 0 24px; padding: 13px 16px;
  border: 1px solid var(--line); border-radius: 14px; background: var(--surface-panel); box-shadow: var(--shadow); backdrop-filter: blur(16px);
}
.exam-header.free-header { grid-template-columns: minmax(0, 1fr) auto; }
.exam-header strong { display: block; }
.exam-progress { height: 7px; overflow: hidden; border-radius: 99px; background: var(--track); }
.exam-progress i { background: var(--green-action); }
.timer { display: flex; align-items: center; gap: 8px; }
.timer span, .timer strong { display: block; text-align: right; }
.timer span { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
.timer strong { font-variant-numeric: tabular-nums; }
.timer.urgent strong { color: var(--red); }
.timer-toggle {
  border: 0; padding: 4px; border-radius: 7px; color: var(--muted);
  background: transparent; cursor: pointer; font-size: 15px; line-height: 1;
}
.timer-toggle:hover { color: var(--ink); }
.timer.collapsed .timer-readout { display: none; }
.exam-layout { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 20px; align-items: start; }
.exam-layout.free-layout { grid-template-columns: minmax(0, 1fr); max-width: 920px; margin: 0 auto; }
.free-hint { margin: 8px 0 0; text-align: left; }
.question-panel { padding: clamp(22px, 4vw, 46px); }
.question-meta, .question-nav header, .explanation header {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.question-number { font-weight: 850; margin-right: 10px; }
.flag-button { border: 0; padding: 8px 10px; border-radius: 9px; color: var(--muted); background: transparent; cursor: pointer; }
.flag-button.active { color: var(--gold-ink); background: var(--gold-soft); }
.topic-line { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 26px; color: var(--muted); }
.stem { margin: 20px 0 26px; font: 500 clamp(20px, 2.5vw, 28px)/1.36 Georgia, serif; letter-spacing: -.015em; }
.question-image { max-width: 760px; margin: 0 auto 28px; padding: 12px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface-solid); }
.question-image img { display: block; max-width: 100%; max-height: 560px; margin: auto; border-radius: 8px; object-fit: contain; }
.question-image figcaption { padding-top: 8px; color: var(--muted); font-size: 11px; text-align: center; }
.options { display: grid; gap: 11px; }
.option {
  width: 100%; display: grid; grid-template-columns: 35px 1fr auto; gap: 13px; align-items: center;
  padding: 15px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface-control);
  text-align: left; cursor: pointer; transition: .15s ease;
}
.option:hover:not(:disabled) { border-color: var(--green); transform: translateX(2px); }
.option:disabled { cursor: default; opacity: 1; }
.option-key { width: 32px; height: 32px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 9px; font-weight: 850; }
.option.selected { border-color: var(--gold); background: var(--surface-warning); }
.option.selected .option-key { color: #fff; border-color: var(--gold); background: var(--gold); }
.option.correct { border-color: var(--green); background: var(--surface-success); }
.option.correct .option-key { color: #fff; border-color: var(--green-action); background: var(--green-action); }
.option.wrong { border-color: var(--red); background: var(--surface-error); }
.option.wrong .option-key { color: #fff; border-color: var(--red); background: var(--red); }
.option-state { font-size: 11px; font-weight: 850; text-transform: uppercase; letter-spacing: .05em; }
.explanation { margin-top: 24px; padding: 22px; border-left: 4px solid var(--green); border-radius: 4px 13px 13px 4px; background: var(--surface-explanation); }
.explanation.annulled { border-color: var(--gold); background: var(--surface-annulled); }
.explanation p { white-space: pre-line; }
.audit-note { color: var(--audit-note); }
.question-controls { display: flex; justify-content: space-between; gap: 12px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.question-nav { position: sticky; top: 150px; max-height: calc(100vh - 175px); overflow: auto; }
.question-nav header span { font-weight: 850; }
.nav-legend { display: flex; gap: 12px; margin: 14px 0; color: var(--muted); font-size: 10px; }
.nav-legend span { display: flex; gap: 5px; align-items: center; }
.nav-legend i { width: 8px; height: 8px; border-radius: 2px; background: var(--green); }
.nav-legend i.flagged { background: var(--gold); }
.question-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.question-grid a { position: relative; display: grid; aspect-ratio: 1; place-items: center; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-control); font-size: 11px; }
.question-grid a.answered { color: #fff; border-color: var(--green-action); background: var(--green-action); }
.question-grid a.flagged::after { content: ""; position: absolute; top: 3px; right: 3px; width: 5px; height: 5px; border-radius: 50%; background: var(--gold); }
.question-grid a.current { outline: 2px solid var(--gold); outline-offset: 1px; font-weight: 850; }
.keyboard-hint { color: var(--muted); font-size: 10px; text-align: center; }
kbd { padding: 2px 5px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; background: var(--surface-control); }
.result-hero { padding: 30px; border-radius: var(--radius); color: #fff; background: var(--hero-bg); }
.result-hero .eyebrow { color: #92c6b3; }
.result-hero p { color: var(--hero-muted); }
.score-ring {
  flex: 0 0 150px; width: 150px; height: 150px; display: grid; place-content: center; text-align: center;
  border-radius: 50%; background: conic-gradient(var(--gold) calc(var(--score) * 1%), rgba(255,255,255,.12) 0);
  position: relative;
}
.score-ring::before { content: ""; position: absolute; inset: 10px; border-radius: 50%; background: var(--hero-bg); }
.score-ring strong, .score-ring span { position: relative; }
.score-ring strong { font: 700 32px Georgia, serif; }
.score-ring span { color: var(--hero-muted); font-size: 11px; }
.result-actions { margin: 4px 0 20px; justify-content: end; }
.result-subjects { display: grid; gap: 3px; }
.result-subjects article { display: grid; grid-template-columns: minmax(220px, 1fr) minmax(140px, 1fr) 52px; gap: 18px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.result-subjects article:last-child { border: 0; }
.result-subjects small { display: block; margin-left: 40px; color: var(--muted); }
.result-bar { height: 8px; overflow: hidden; border-radius: 99px; background: var(--track); }
.result-bar i { background: var(--green-action); }
.topic-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.topic-cards article { min-height: 120px; display: flex; flex-direction: column; padding: 15px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-control); }
.topic-cards small, .topic-cards span { color: var(--muted); }
.topic-cards strong { flex: 1; margin: 5px 0; }
.page-heading.split { align-items: center; }
.corpus-badge { display: grid; min-width: 170px; padding: 20px; border-radius: 15px; background: var(--gold-soft); text-align: center; }
.corpus-badge strong { font: 700 30px Georgia, serif; }
.audit-filters { display: grid; grid-template-columns: minmax(260px, 1fr) 170px 260px auto; gap: 12px; align-items: end; }
.audit-filters label span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 11px; font-weight: 800; }
.audit-filters input, .audit-filters select {
  width: 100%; height: 44px; padding: 8px 11px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-control);
}
.audit-count { margin: 10px 0; color: var(--muted); font-size: 12px; }
.audit-list { display: grid; gap: 12px; }
.audit-card { margin: 0; }
.audit-card header, .audit-card footer { display: flex; justify-content: space-between; gap: 16px; }
.audit-card > small, .audit-card footer { color: var(--muted); }
.audit-card p { margin: 12px 0 18px; font-family: Georgia, serif; font-size: 17px; }
.audit-card footer { padding-top: 12px; border-top: 1px solid var(--line); font-size: 11px; }
.pagination { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 24px; }
.back-link { display: inline-block; margin-bottom: 20px; color: var(--green-text); font-weight: 750; }
.audit-detail-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(300px, .6fr); gap: 20px; align-items: start; }
.evidence-copy h3 { margin: 24px 0 8px; color: var(--green-text); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.evidence-copy p { white-space: pre-line; }
.audit-options { display: grid; gap: 8px; padding-left: 30px; }
.audit-options li { padding: 10px; border-radius: 9px; background: var(--surface-subtle); }
.audit-options li.correct { background: var(--mint); font-weight: 750; }
.audit-image { display: block; max-width: 100%; max-height: 520px; margin: 20px auto; border-radius: 10px; }
.provenance dl { margin: 16px 0 0; }
.provenance dl div { padding: 10px 0; border-bottom: 1px solid var(--line); }
.provenance dt { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .07em; }
.provenance dd { margin: 3px 0 0; overflow-wrap: anywhere; }
.hash { font-family: ui-monospace, monospace; font-size: 10px; }
.span-row { display: grid; padding: 10px 0; border-bottom: 1px solid var(--line); }
.span-row span, .span-row small { color: var(--muted); font-size: 11px; }
.error-page { min-height: 60vh; }
.error-page .mode-icon { margin: auto; background: var(--red); }
.toast {
  position: fixed; right: 22px; bottom: 22px; z-index: 100; max-width: 340px;
  padding: 12px 16px; border-radius: 11px; color: #fff; background: var(--hero-bg);
  opacity: 0; pointer-events: none; transform: translateY(10px); transition: .2s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }
.modal-dialog {
  max-width: 420px; padding: 26px; border: 1px solid var(--panel-border);
  border-radius: var(--radius); color: var(--ink); background: var(--surface);
  box-shadow: var(--shadow);
}
.modal-dialog::backdrop { background: rgba(7,12,10,.55); backdrop-filter: blur(3px); }
.modal-dialog h2 { margin: 0 0 8px; font: 700 22px/1.2 Georgia, serif; letter-spacing: -.02em; }
.modal-dialog p { margin: 0 0 22px; color: var(--muted); }
.modal-actions { display: flex; flex-wrap: wrap; justify-content: end; gap: 10px; }
.lightbox {
  position: fixed; inset: 0; width: 100%; max-width: none; height: 100%; max-height: none;
  margin: 0; padding: 0; border: 0; color: #fff; background: rgba(7,12,10,.97);
}
.lightbox::backdrop { background: rgba(7,12,10,.97); }
.lightbox[open] { display: grid; grid-template-rows: auto 1fr; }
.lightbox-toolbar {
  position: relative; z-index: 2; display: flex; flex-wrap: wrap; gap: 6px;
  justify-content: center; padding: 10px; background: rgba(7,12,10,.9);
}
.lightbox-toolbar button {
  min-width: 44px; min-height: 40px; padding: 8px 12px; border: 1px solid rgba(255,255,255,.25);
  border-radius: 10px; color: #fff; background: rgba(255,255,255,.08); cursor: pointer; font-weight: 800;
}
.lightbox-toolbar button:hover { background: rgba(255,255,255,.18); }
.lightbox-stage { overflow: hidden; display: grid; place-items: center; touch-action: none; }
.lightbox-stage img { user-select: none; cursor: grab; }
.lightbox-stage img:active { cursor: grabbing; }
.image-expand { display: flex; margin: 10px auto 0; }

@media (max-width: 980px) {
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid, .session-builder, .exam-layout, .audit-detail-grid, .profile-grid { grid-template-columns: 1fr; }
  .builder-summary, .question-nav { position: static; max-height: none; }
  .question-nav { order: -1; }
  .question-grid { grid-template-columns: repeat(10, 1fr); }
  .audit-filters { grid-template-columns: 1fr 1fr; }
  .search-field { grid-column: 1 / -1; }
  .topic-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .page-shell { width: min(100% - 24px, 1280px); padding-top: 28px; }
  .topbar { min-height: 66px; padding: 10px 14px; }
  .brand small { display: none; }
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute; top: 65px; left: 12px; right: 12px; display: none; padding: 8px;
    border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow);
  }
  .main-nav.open { display: grid; }
  .hero, .page-heading, .result-hero { align-items: stretch; flex-direction: column; }
  .hero h1 { font-size: 46px; }
  .metric-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .metric-card { padding: 16px; }
  .metric-card strong { font-size: 27px; }
  .panel { padding: 17px; border-radius: 14px; }
  .dashboard-grid { gap: 0; }
  .panel-head { align-items: start; }
  .subject-table { min-width: 700px; }
  .session-row { grid-template-columns: 36px 1fr auto; }
  .session-row .status-pill { display: none; }
  .mode-grid, .check-grid { grid-template-columns: 1fr; }
  .avatar-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .mode-card.real { grid-column: auto; }
  .year-grid { grid-template-columns: repeat(3, 1fr); }
  .exam-header { top: 66px; grid-template-columns: 1fr auto; margin-top: -14px; }
  .exam-progress { grid-row: 2; grid-column: 1 / -1; }
  .exam-header .timer { grid-column: 1; grid-row: 1; }
  .exam-header > div:first-child { display: none; }
  .question-panel { padding: 18px; }
  .topic-line { margin-top: 20px; }
  .option { grid-template-columns: 32px 1fr; }
  .option-state { grid-column: 2; }
  .question-grid { grid-template-columns: repeat(7, 1fr); }
  .result-hero { align-items: center; text-align: center; }
  .result-subjects article { grid-template-columns: 1fr 45px; gap: 8px; }
  .result-bar { grid-column: 1 / -1; grid-row: 2; }
  .topic-cards { grid-template-columns: 1fr; }
  .audit-filters { grid-template-columns: 1fr; }
  .audit-filters .search-field { grid-column: auto; }
  .audit-card header, .audit-card footer { flex-direction: column; }
  .corpus-badge { min-width: 0; }
}

@media (max-width: 420px) {
  .theme-toggle [data-theme-label] { display: none; }
  .theme-toggle { width: 40px; justify-content: center; padding-inline: 8px; }
}

@media (hover: none) and (pointer: coarse) {
  .keyboard-hint { display: none; }
}