/* Colour tokens. Every text / background pair used below is checked for WCAG AA by test/contrast.test.js:
   keep the two dark blocks identical (the media block serves users without a stored choice). */
:root {
  color-scheme: light dark;
}
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

:root, :root[data-theme="light"] {
  --bg: #f7f8fb;
  --card: #ffffff;
  --text: #111827;
  --muted: #5b6472;
  --border: #e5e7eb;
  --border-strong: #7a8494;   /* boundary of controls (>= 3:1 on the card) */
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --link: #1d4ed8;
  --focus: #1d4ed8;
  --success: #047857;
  --danger: #dc2626;
  --warning: #b45309;
  --info: #4f46e5;
  --on-accent: #ffffff;       /* text on solid primary / success / danger / warning / info fills */
  --success-text: #047857;    /* the same hues as TEXT on tinted backgrounds */
  --danger-text: #b91c1c;
  --warning-text: #92400e;
  --info-text: #4338ca;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.06);
}

:root[data-theme="dark"] {
  --bg: #0b1220;
  --card: #131a2b;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: #1f2a44;
  --border-strong: #66769b;
  --primary: #60a5fa;
  --primary-dark: #3b82f6;
  --link: #60a5fa;
  --focus: #93c5fd;
  --success: #10b981;
  --danger: #f87171;
  --warning: #f59e0b;
  --info: #818cf8;
  --on-accent: #0b1220;       /* dark text on the bright fills */
  --success-text: #34d399;
  --danger-text: #f87171;
  --warning-text: #fbbf24;
  --info-text: #a5b4fc;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 4px 12px rgba(0, 0, 0, 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1220;
    --card: #131a2b;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #1f2a44;
    --border-strong: #66769b;
    --primary: #60a5fa;
    --primary-dark: #3b82f6;
    --link: #60a5fa;
    --focus: #93c5fd;
    --success: #10b981;
    --danger: #f87171;
    --warning: #f59e0b;
    --info: #818cf8;
    --on-accent: #0b1220;
    --success-text: #34d399;
    --danger-text: #f87171;
    --warning-text: #fbbf24;
    --info-text: #a5b4fc;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 4px 12px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; }

html { scroll-padding-top: calc(var(--topbar-h) + 72px); scroll-padding-bottom: 24px; }
html { font-size: 100%; }   /* rem everywhere: the browser's font-size preference is respected */
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
}   /* font, size, line height: css/chrome.css (shared with the static pages) */

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
a.btn:hover, a.category-row:hover, .tabs a:hover, .topbar nav a:hover, .brand a:hover, .exam-card h2 a:hover, .exam-card h3 a:hover { text-decoration: none; }

/* ---------- Accessibility foundations ---------- */
.sr-only {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.skip {
  position: absolute; left: 12px; top: -80px; z-index: 100; padding: 10px 16px; border-radius: 10px;
  background: var(--card); color: var(--link); font-weight: 700; border: 2px solid var(--focus);
}
.skip:focus { top: 8px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
/* solid buttons: a card-coloured gap between the fill and the ring keeps the ring visible on any background */
.btn:focus-visible { box-shadow: 0 0 0 2px var(--card); }
h1:focus, h2:focus, main:focus, [tabindex="-1"]:focus { outline: none; }   /* programmatic focus targets (page heading, status line) */
.small { font-size: 0.8125rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* top bar + footer: css/chrome.css (shared with the static pages) */

/* the content column and h1: css/chrome.css (shared with the static pages) */
h2 { font-size: 1.25rem; margin: 24px 0 12px; }
h3 { font-size: 1rem; margin: 28px 0 10px; }
.card > :first-child { margin-top: 0; }   /* the card's padding is the gap; a heading's own top margin would double it */

.muted { color: var(--muted); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  box-shadow: var(--shadow);
}
.stat .label { font-size: 0.8125rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 1.75rem; font-weight: 700; margin-top: 4px; }
.stat.accent .value { color: var(--link); }
.stat.good .value { color: var(--success-text); }
.stat.warn .value { color: var(--warning-text); }
.stat.due .value { color: var(--warning-text); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform .05s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { background: var(--bg); }
.btn:active { transform: translateY(1px); }
.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--on-accent);
}
.btn.primary:hover { background: var(--primary-dark); }
.btn.success { background: var(--success); border-color: var(--success); color: var(--on-accent); }
.btn.due     { background: var(--warning); border-color: var(--warning); color: var(--on-accent); }
.btn.danger  { background: var(--danger);  border-color: var(--danger);  color: var(--on-accent); }
.btn.warning { background: var(--warning); border-color: var(--warning); color: var(--on-accent); }
.btn.info    { background: var(--info);    border-color: var(--info);    color: var(--on-accent); }
.btn.due:hover, .btn.success:hover, .btn.danger:hover, .btn.warning:hover, .btn.info:hover { filter: brightness(.93); }
.btn.ghost   { background: transparent; }
.btn.ghost:hover { background: var(--bg); }
/* destructive actions are outlined; solid red is reserved for the confirm button inside the dialog */
.btn.danger-outline { background: transparent; border-color: var(--danger); color: var(--danger-text); }
.btn.danger-outline:hover { background: rgba(220, 38, 38, 0.08); }
.btn.small-btn { padding: 4px 10px; font-size: 0.8125rem; }
.btn.on { border-color: var(--warning); }
.btn.file-btn:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; box-shadow: 0 0 0 2px var(--card); }
@supports not selector(:has(*)) { .btn.file-btn:focus-within { outline: 3px solid var(--focus); outline-offset: 2px; } }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }
.btn-row.center { justify-content: center; }
.btn-row.stretch { width: 100%; }
.btn-rows { display: flex; flex-direction: column; gap: 8px; }   /* "Podle zadání": one row per pair */
.btn-row.stretch > .btn { flex: 1 1 0; min-width: 0; }
@media (max-width: 600px) {
  .btn-row.stretch > .btn { flex: 1 1 100%; }
}

select, input[type="text"], input[type="search"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background-color: var(--card);
  color: var(--text);
  font-size: 0.875rem;
}

input[type="checkbox"], input[type="radio"] { accent-color: var(--primary-dark); }
.check-row { display: flex; gap: 8px; align-items: center; }

/* Study card */
.study-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--muted);
  margin-bottom: 8px;
}
.tag {
  background: rgba(99, 102, 241, 0.1);
  color: var(--info-text);
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.8125rem;
}
.tag.cat { background: rgba(107, 114, 128, 0.1); color: var(--muted); }
.tag.multi { background: rgba(245, 158, 11, 0.15); color: var(--warning-text); }
.tag.cs { background: rgba(16, 185, 129, 0.12); color: var(--success-text); }

.case-intro {
  background: rgba(99, 102, 241, 0.05);
  border-left: 4px solid var(--info);
  padding: 12px 14px;
  border-radius: 8px;
  margin-bottom: 14px;
  font-size: 0.875rem;
  color: var(--text);
}
.case-intro .label { font-size: 0.75rem; font-weight: 700; color: var(--info-text); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 4px; }
details.case-intro > summary { color: var(--info-text); margin-bottom: 4px; padding: 0; }
details.case-intro:not([open]) > summary { margin-bottom: 0; }

.question-text {
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.5;
  margin: 8px 0 16px;
  overflow-wrap: anywhere;
}
.case-intro, .reasoning, .source, .category-row .name, .area-title, .subarea-title { overflow-wrap: anywhere; }

.answers { display: grid; gap: 8px; margin-bottom: 16px; }
.answer {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border: 1.5px solid var(--border-strong);
  border-radius: 10px;
  background: var(--card);
  cursor: pointer;
  user-select: none;
  transition: border-color .12s ease, background .12s ease;
}
.answer:hover { background: var(--bg); }
.answer:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }
@supports not selector(:has(*)) { .answer:focus-within { outline: 3px solid var(--focus); outline-offset: 2px; } }
.answer .letter {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8125rem;
  border: 1.5px solid var(--border-strong);
}
.answer .text { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.answer .mark { display: block; margin-top: 4px; font-size: 0.8125rem; font-weight: 700; }
.answer .mark:empty { display: none; }
.answer.selected { border-color: var(--primary-dark); background: rgba(37, 99, 235, 0.07); }
.answer.selected .letter { background: var(--primary); color: var(--on-accent); border-color: var(--primary); }

.answer.revealed.correct { border-color: var(--success); background: rgba(16, 185, 129, 0.08); }
.answer.revealed.correct .letter { background: var(--success); color: var(--on-accent); border-color: var(--success); }
.answer.revealed.correct .mark { color: var(--success-text); }
.answer.revealed.wrong-selected { border-color: var(--danger); background: rgba(239, 68, 68, 0.08); }
.answer.revealed.wrong-selected .letter { background: var(--danger); color: var(--on-accent); border-color: var(--danger); }
.answer.revealed.wrong-selected .mark { color: var(--danger-text); }

.answer.revealed { cursor: default; }

.answer-status { margin: 14px 0 6px; font-weight: 700; font-size: 0.9375rem; }
.answer-status.ok { color: var(--success-text); }
.answer-status.bad { color: var(--danger-text); }
.answer-status.none { color: var(--text); }
.rate-prompt { margin: 6px 0 8px; font-size: 0.8125rem; color: var(--muted); }
.review .answer-status { margin: 4px 0 8px; font-size: 0.875rem; }

.study-top { display: flex; align-items: center; gap: 16px; margin-bottom: 10px; }
.back-link { font-size: 0.875rem; font-weight: 600; white-space: nowrap; padding: 6px 0; }
.study-progress { flex: 1; display: flex; align-items: center; gap: 10px; min-width: 0; }
.study-progress .progress-bar { flex: 1; margin: 0; }
.progress-text { font-size: 0.8125rem; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }

.reasoning {
  background: rgba(99, 102, 241, 0.05);
  border-radius: 10px;
  padding: 12px 14px;
  margin: 12px 0;
  font-size: 0.875rem;
  color: var(--text);
}
.reasoning .label { font-size: 0.75rem; font-weight: 700; color: var(--info-text); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 4px; }
.source {
  font-size: 0.8125rem;
  color: var(--muted);
  font-style: italic;
  margin-top: 6px;
}

details summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--link);
  padding: 6px 0;
  list-style: none;
}
details summary::-webkit-details-marker { display: none; }
details summary::before { content: "▸ "; }
details[open] summary::before { content: "▾ "; }

.rating-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); gap: 8px; }
.rating-row .btn {
  padding: 14px 12px;
  font-size: 0.875rem;
  flex-direction: column;
  line-height: 1.3;
}
.rating-row .btn small {
  font-size: 0.8125rem;
  font-weight: 500;
}

.progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin: 8px 0 16px;
}
.progress-bar .fill {
  height: 100%;
  background: var(--primary);
  transition: width .3s ease;
}

.category-list { display: block; }
.category-body { display: grid; gap: 6px; }
.filter-status:empty { display: none; }
.empty-note { text-align: center; padding: 16px; }
.category-item { border: 1px solid var(--border); border-radius: 10px; background: var(--card); overflow: hidden; }
a.category-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  grid-template-areas: "name meta chev" "bar bar bar";
  align-items: center;
  column-gap: 12px;
  row-gap: 6px;
  padding: 10px 12px;
  color: var(--text);
  cursor: pointer;
  transition: background .12s ease;
}
a.category-row:hover { background: var(--bg); }
.category-row .name { grid-area: name; font-size: 0.875rem; min-width: 0; }
.category-row .meta { grid-area: meta; font-size: 0.8125rem; color: var(--muted); white-space: nowrap; }
.category-row .chev { grid-area: chev; font-size: 1.375rem; line-height: 1; color: var(--muted); }
.category-row .full-bar { grid-area: bar; }
.cat-title { font-weight: 700; }
.cat-detail {
  margin: 0; padding: 0 12px 4px; font-size: 0.8125rem; overflow-wrap: anywhere;
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; line-clamp: 2; overflow: hidden;
}
.cat-detail.open { display: block; overflow: visible; }
.cat-more { margin: 0 12px 8px; padding: 2px 0; border: 0; background: none; color: var(--link); font: inherit; font-size: 0.8125rem; font-weight: 600; cursor: pointer; text-decoration: underline; }
.category-row .full-bar, .full-bar.two-tone { position: relative; width: 100%; height: 5px; background: var(--border); border-radius: 999px; overflow: hidden; }
.category-row .full-bar .fill { position: absolute; left: 0; top: 0; height: 100%; background: var(--success); transition: width 0.3s ease; }
.category-row .full-bar .fill.tried { background: var(--border-strong); opacity: .6; }

/* collapsible areas */
details.area { margin: 0 0 8px; }
details.area > summary.area-summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--border); font-weight: inherit; color: var(--text); }
.area-summary .area-title { flex: 1; min-width: 0; margin: 0; padding: 0; border: 0; font-size: 0.9375rem; }
.area-totals { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; }
.full-bar.mini { display: inline-block; width: 64px; height: 5px; }
details.area > .area-body { display: grid; gap: 6px; padding-top: 8px; }


.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}
.empty .icon { font-size: 3rem; margin-bottom: 12px; }
.empty h1 { font-size: 1.5rem; }

.bar-chart {
  display: grid;
  gap: 6px;
  margin: 12px 0;
}
.bar-row { display: grid; grid-template-columns: 100px 1fr 50px; align-items: center; gap: 8px; font-size: 0.8125rem; }
.bar-row .bar { height: 16px; background: var(--border); border-radius: 4px; overflow: hidden; }
.bar-row .bar .fill { height: 100%; background: var(--primary); }
.bar-row .label { color: var(--muted); overflow-wrap: anywhere; }
.bar-row .count { text-align: right; font-weight: 600; }
.bar-row.wide { grid-template-columns: minmax(0, 1fr) 120px 60px; }

.kbd-hint {
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--muted);
  text-align: center;
}
@media (hover: none) { .kbd-hint { display: none; } }   /* single-key hints are noise on touch devices */
kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  font-family: ui-monospace, monospace;
  font-size: 0.8125rem;
}

.kv-list {
  display: grid;
  gap: 8px;
}
.kv-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.kv-row:last-child { border-bottom: none; }
.kv-name { font-weight: 600; }
.kv-desc { font-size: 0.875rem; }

@media (max-width: 600px) {
  .question-text { font-size: 1rem; }
  .rating-row { grid-template-columns: 1fr 1fr; }   /* 2x2 instead of 3+1 */
  .study-top { gap: 10px; }
  .sm-sr { position: absolute !important; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
  .stat .value { font-size: 1.375rem; }
  .bar-row, .bar-row.wide { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "label count" "bar bar"; row-gap: 4px; }
  .bar-row .label { grid-area: label; } .bar-row .count { grid-area: count; } .bar-row .bar { grid-area: bar; }
  a.category-row { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "name chev" "meta meta" "bar bar"; }
  .category-row .meta { white-space: normal; }
  .kv-row { grid-template-columns: 1fr; gap: 2px; }
}

/* touch: bigger targets (WCAG 2.5.8 asks 24px, platform guidelines 44px) */
@media (pointer: coarse) {
  .btn { min-height: 44px; }
  .btn.small-btn { min-height: 40px; padding: 6px 12px; }
  input[type="checkbox"] { width: 22px; height: 22px; }
  .check-row { min-height: 44px; }
  .back-link { padding: 12px 0; }
  .tabs a { padding-top: 12px; padding-bottom: 12px; }
  .answer { padding-top: 14px; padding-bottom: 14px; }
  select, input[type="text"], input[type="search"] { min-height: 44px; }
}

/* ---------- Multi-exam portal ---------- */
.loading { text-align: center; padding: 40px 0; }

.hero { padding: 0 0 20px; }   /* the h1 itself is the shared page heading (css/chrome.css) */
.hero h1 { margin-bottom: 8px; }
.hero .lead { font-size: 1.0625rem; color: var(--muted); max-width: 640px; margin: 0; }

.notice {
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 16px;
  font-size: 0.875rem;
}
.notice.bad { background: rgba(239, 68, 68, 0.08); border-color: rgba(239, 68, 68, 0.4); }
.notice:empty { display: none; }

.exam-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.exam-card {
  --accent: hsl(var(--hue, 217) 75% 52%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-top: 4px solid var(--accent);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 18px;
}
.exam-card :is(h2, h3) { margin: 0; font-size: 1.125rem; line-height: 1.3; }
.exam-card :is(h2, h3) a { color: var(--text); }
.exam-card p { margin: 0; font-size: 0.875rem; }
.exam-card-head { display: flex; justify-content: space-between; align-items: center; font-size: 0.8125rem; }
.exam-card .btn-row { margin-top: auto; padding-top: 4px; }
.exam-card .source { font-size: 0.8125rem; }
.exam-progress .meta { font-size: 0.8125rem; margin-top: 4px; }
.full-bar { width: 100%; height: 5px; background: var(--border); border-radius: 999px; overflow: hidden; }
.full-bar .fill { height: 100%; background: var(--success); transition: width 0.3s ease; }

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: hsl(var(--hue, 217) 75% 52% / 0.14);
  color: hsl(var(--hue, 217) 80% 26%);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: .04em;
  vertical-align: middle;
}
:root[data-theme="dark"] .badge { color: hsl(var(--hue, 217) 85% 72%); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .badge { color: hsl(var(--hue, 217) 85% 72%); }
}

.exam-header { margin-bottom: 16px; }
.exam-header h1 { margin: 4px 0 12px; font-size: 1.5rem; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); overflow-x: auto; overscroll-behavior-x: contain;
  scrollbar-width: none; scroll-snap-type: x proximity; }
.tabs::-webkit-scrollbar { display: none; }
.tabs a {
  flex: 0 0 auto; white-space: nowrap; scroll-snap-align: start;
  padding: 8px 14px;
  color: var(--muted);
  font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tabs a:hover { text-decoration: none; color: var(--text); }
.tabs a.active { color: var(--link); border-bottom-color: var(--link); }
@media (max-width: 600px) { .tabs { gap: 0; } .tabs a { padding: 8px 10px; font-size: 0.9375rem; } }

.group-title {
  --accent: hsl(var(--hue, 217) 75% 52%);
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
  margin: 40px 0 14px; padding: 0;
  font-size: 1.375rem; line-height: 1.25; font-weight: 700; color: var(--text);
  /* no underline: a hard rule clashed with the rounded cards below */
}
.group-title:first-of-type { margin-top: 24px; }
.group-title .group-count { flex-shrink: 0; font-size: 0.8125rem; font-weight: 500; color: var(--muted); }
@media (max-width: 600px) { .group-title { font-size: 1.1875rem; margin-top: 32px; } }

.area-title { font-size: 0.875rem; margin: 22px 0 6px; }
.subarea-title { font-size: 0.8125rem; font-weight: 600; margin: 12px 0 4px; color: var(--muted); }


/* ---------- Mock exam ---------- */
.mock-bar { position: sticky; top: var(--topbar-h); z-index: 5; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 8px 14px; margin-bottom: 12px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); }
.mock-bar .btn { padding: 6px 14px; }
.mock-time, .mock-count { white-space: nowrap; font-size: 0.875rem; }
@media (max-width: 600px) { .mock-bar { gap: 8px; padding: 6px 10px; } .mock-bar .btn { padding: 6px 10px; } }
#mock-clock { font-variant-numeric: tabular-nums; font-size: 1.125rem; }
#mock-clock.low { color: var(--danger-text); font-weight: 800; }
#mock-clock.low::before { content: "⏱ "; }

.mock-navwrap { margin-bottom: 14px; }
.mock-stepper { display: none; align-items: center; justify-content: center; gap: 14px; margin-bottom: 6px; }
.mock-stepper .step-label { font-weight: 700; font-variant-numeric: tabular-nums; min-width: 64px; text-align: center; }
@media (max-width: 600px) { .mock-stepper { display: flex; } }
.mock-overview > summary { padding: 8px 0; }
.mock-nav-group { margin-bottom: 8px; }
.nav-label { font-size: 0.8125rem; font-weight: 700; color: var(--muted); margin: 6px 0 4px; }
.mock-nav .dots { display: flex; flex-wrap: wrap; gap: 4px; }
.nav-legend { font-size: 0.8125rem; margin: 4px 0 0; }
.mock-dot { position: relative; min-width: 40px; height: 34px; padding: 0 6px; border-radius: 8px; border: 1.5px solid var(--border-strong); background: var(--card);
  color: var(--text); font-size: 0.8125rem; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 2px; }
.mock-dot .m { font-size: 0.75rem; font-weight: 800; }
.mock-dot.skill { border-style: dashed; }
/* answered = filled (white / dark ✓ on a solid fill), flagged = ⚑ marker + warning-coloured underline; never colour alone */
.mock-dot.answered { background: var(--success); border-color: var(--success); color: var(--on-accent); }
.mock-dot.flagged { box-shadow: inset 0 -4px 0 var(--warning-text); }
.mock-dot.flagged:not(.answered) .m { color: var(--warning-text); }
.mock-dot.current { border-color: var(--focus); box-shadow: 0 0 0 2px var(--focus); font-weight: 800; }
.mock-dot.current.flagged { box-shadow: 0 0 0 2px var(--focus), inset 0 -4px 0 var(--warning-text); }
@media (pointer: coarse) { .mock-dot { min-width: 44px; height: 44px; } }

dialog.dialog { border: 1px solid var(--border); border-radius: 14px; background: var(--card); color: var(--text); box-shadow: var(--shadow);
  width: min(460px, calc(100vw - 32px)); padding: 20px; }
dialog.dialog::backdrop { background: rgba(0, 0, 0, 0.55); }
dialog.dialog h2 { margin-top: 0; font-size: 1.125rem; }
.dialog-status:empty { display: none; }
.dialog-status { font-size: 0.8125rem; color: var(--muted); }

.verdict.pass { border-left: 6px solid var(--success); }
.verdict.fail { border-left: 6px solid var(--danger); }
.verdict h2 { margin: 0 0 4px; }
.review.ok { border-left: 4px solid var(--success); }
.review.bad { border-left: 4px solid var(--danger); }
.answer.picked { font-weight: 600; }

/* ---------- Orientation, freshness, resume (portal) ---------- */
.stat-sub { font-size: 0.8125rem; margin-top: 4px; }
.lead-list { margin: 10px 0 0; padding-left: 20px; color: var(--muted); }
.audience { font-weight: 600; }
.exam-card .audience { font-size: 0.9375rem; }
.freshness { margin: 0 0 4px; }
.notice.calm { background: rgba(245, 158, 11, 0.12); border-color: rgba(180, 83, 9, 0.35); margin: 4px 0 0; font-size: 0.8125rem; }
p.notice.calm { margin-bottom: 12px; }
.exam-card .notice.calm { margin-bottom: 0; }
.notice { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; }
.notice > p { margin: 0; flex: 1 1 260px; }
.notice.calm { display: block; }

.resume { margin: 0 0 20px; }
.resume-title { margin: 0 0 10px; font-size: 1.125rem; }
.resume-list { display: grid; gap: 10px; }
.resume-item { --accent: hsl(var(--hue, 217) 75% 52%); display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; padding: 12px 14px;
  background: var(--card); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 12px; box-shadow: var(--shadow); }
.resume-name { flex: 1 1 220px; font-weight: 600; }
.resume-name a { color: var(--text); }
.resume-due { font-size: 0.875rem; }

.group-title { scroll-margin-top: calc(var(--topbar-h) + 12px); }

/* ---------- Exam overview ---------- */
.cta-mock { border-left: 6px solid var(--primary-dark); }
.cta-mock h2, .cta-mock h3 { margin-top: 0; }
.seg { border: 0; padding: 0; margin: 0 0 14px; min-width: 0; }
.seg legend { padding: 0; margin-bottom: 4px; font-size: 0.875rem; font-weight: 600; }
.seg-row { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.seg-opt { display: inline-flex; align-items: center; gap: 6px; min-height: 32px; font-size: 0.9375rem; cursor: pointer; }
.cat-filter { margin-bottom: 10px; }

/* ---------- Study ---------- */
.rating-row .btn.suggested { box-shadow: 0 0 0 2px var(--card), 0 0 0 5px var(--text); }
.rating-row .btn small.sug { font-weight: 700; text-decoration: underline; }
.report-row:empty { display: none; }
.report-row { margin-top: 10px; }
.report-link { color: var(--link); }
.tomorrow { margin: 0 0 16px; }

/* ---------- Statistics ---------- */
.res-ok { color: var(--success-text); font-weight: 700; }
.res-bad { color: var(--danger-text); font-weight: 700; }
.mock-summary { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px; }
.mock-summary p { margin: 0; }
.spark { stroke: var(--link); fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; flex-shrink: 0; }
.table-wrap { overflow-x: auto; margin: 10px 0; }
.mock-table, .data-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; font-variant-numeric: tabular-nums; }
.mock-table th, .mock-table td, .data-table th, .data-table td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.mock-table th, .data-table th { color: var(--muted); font-weight: 600; font-size: 0.8125rem; }


/* ---------- Readiness, weak areas, planner, offline (Phase 1) ---------- */
.rd-level { margin: 0 0 8px; }
.rd-tag { font-size: 0.9375rem; padding: 3px 10px; }
.rd-line { margin: 6px 0 0; font-size: 0.875rem; }
.exam-countdown { margin: 6px 0 0; font-size: 0.875rem; }
.data-table th[scope=row], .mock-table th[scope=row] { color: var(--text); font-weight: 600; font-size: 0.875rem; white-space: normal; min-width: 14rem; }
.weak-hint { margin-left: 6px; }
.area-trends { margin-top: 18px; }
.area-trends .spark { vertical-align: middle; }
.plan-fields { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 8px 0; }
.plan-fields .field { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }
.plan-fields label { font-weight: 600; font-size: 0.9375rem; }
.plan-fields input[type=date], .plan-fields select { width: auto; min-height: 44px; padding: 8px 12px; border-radius: 10px; border: 1px solid var(--border-strong); background-color: var(--card); color: var(--text); font: inherit; font-size: 0.9375rem; }
/* own chevron with room on the right (the native arrow sits on the border in some browsers); drawn from tokens, so it follows the theme */
select, .plan-fields select {
  appearance: none;
  padding-right: 36px;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 19px) 50%, calc(100% - 14px) 50%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
}
.plan-result p { margin: 6px 0; }
.streak { margin: 6px 0; }
.resume-run { border-left: 6px solid var(--warning); }
.resume-run h2 { margin-top: 0; }
.install-body p { margin: 0; }
/* page-level notices above the content (storage refused, a failed save): js/lib/dom.js pageNotice() */
.page-notices { max-width: var(--page-w); margin: 0 auto; padding: 16px max(20px, env(safe-area-inset-right)) 0 max(20px, env(safe-area-inset-left)); }
.page-notices:empty { display: none; }
.page-notices .notice { margin-bottom: 0; }
.page-notices .notice + .notice { margin-top: 8px; }

/* ---------- review round 2, lane B2 (docs/reviews/2026-10-31-0201) ---------- */
/* UX-2: several correct answers = square, checkbox-like badges (one answer keeps the round, radio-like ones) + an instruction */
.answers.multi .letter { border-radius: 5px; }
.multi-hint { margin: -6px 0 10px; font-size: 0.9375rem; font-weight: 700; color: var(--text); }
.no-reasoning { margin: 6px 0 10px; }
/* UX-12: which exam and selection is running */
.study-title { margin: 0 0 4px; font-size: 0.9375rem; font-weight: 700; line-height: 1.4; color: var(--text); overflow-wrap: anywhere; }
/* UX-5: practice first; the size choice follows the buttons */
.practice .seg { margin: 14px 0 0; }
@media (max-width: 600px) {
  /* compact progress strip: three numbers in one row */
  .stat-grid.compact { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
  .stat-grid.compact .stat { padding: 10px; }
  .stat-grid.compact .stat .label { font-size: 0.6875rem; letter-spacing: 0; }
  .stat-grid.compact .stat .value { font-size: 1.125rem; }
  /* UX-4: the four exam tabs need ~410 px in one row; at 360–390 px they would be cut off with no cue. A 2×2 grid shows all of them. */
  .tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; overflow: visible; border-bottom: 0; scroll-snap-type: none; }
  .tabs a { padding: 11px 8px; text-align: center; white-space: normal; border: 1px solid var(--border-strong); border-radius: 10px; margin: 0; }
  .tabs a.active { border-color: var(--link); box-shadow: inset 0 -3px 0 var(--link); font-weight: 700; }
  .tabs a:last-child:nth-child(odd) { grid-column: 1 / -1; }   /* 3 tabs (no mock test): the last one spans the row */
}
/* WCAG 2.1.4 switch next to the key hint */
.kbd-switch { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; white-space: nowrap; }
.kbd-hint .kbd-switch { font-size: 0.8125rem; }
/* UX-22: wrong / unanswered in the mock review (not the amber "více odpovědí" style) */
.tag.bad { background: rgba(239, 68, 68, 0.12); color: var(--danger-text); }
.review-title { margin: 0; font-size: 0.875rem; font-weight: 700; color: var(--text); }
/* UX-17: the current question in the navigator has its own shape (thick border + pointer); the focus ring stays the only outline */
.mock-dot.current { border: 3px solid var(--text); box-shadow: none; font-weight: 800; }
.mock-dot.current::after { content: ""; position: absolute; left: 50%; bottom: -8px; transform: translateX(-50%);
  border: 5px solid transparent; border-top-color: var(--text); }
.mock-dot.current.flagged { box-shadow: inset 0 -4px 0 var(--warning-text); }
.mock-nav .dots { row-gap: 10px; }