/* Design system: UI/UX Pro Max "Minimalism & Swiss Style", medical teal palette,
   Figtree (headings) + Noto Sans (body). Tokens are semantic; components never use raw hex. */
:root {
  --bg: #f0fdfa;
  --surface: #ffffff;
  --surface-2: #f3f8f7;
  --text: #134e4a;
  --text-strong: #0f2f2d;
  --muted: #475569;
  --line: #cfe6e2;
  --line-strong: #a9cfc9;
  --primary: #0e7490;          /* #0891b2 darkened so white text passes 4.5:1 */
  --primary-hover: #155e75;
  --on-primary: #ffffff;
  --primary-soft: #e0f5f9;
  --ok: #15803d;
  --ok-soft: #dcfce7;
  --bad: #dc2626;
  --bad-soft: #fee2e2;
  --warn: #b45309;
  --warn-soft: #fef3c7;
  --series-2: #64748b;
  --focus: #0e7490;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(15, 47, 45, .06), 0 2px 8px rgba(15, 47, 45, .05);
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-5: 24px; --space-6: 32px; --space-7: 48px;
  --font-head: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Noto Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --t: 180ms;
  --z-header: 20; --z-bottomnav: 30; --z-toast: 100;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a1517;
    --surface: #102326;
    --surface-2: #15302f;
    --text: #e3f3f0;
    --text-strong: #f4fbfa;
    --muted: #9fb7b3;
    --line: #213f3e;
    --line-strong: #2f5754;
    --primary: #22d3ee;
    --primary-hover: #67e8f9;
    --on-primary: #062a31;
    --primary-soft: #0f3a40;
    --ok: #4ade80;
    --ok-soft: #10331f;
    --bad: #f87171;
    --bad-soft: #3b1515;
    --warn: #fbbf24;
    --warn-soft: #36290b;
    --series-2: #94a3b8;
    --focus: #67e8f9;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100dvh;
  background: var(--bg); color: var(--text);
  font: 400 16px/1.6 var(--font-body);
}
h1, h2, h3 { font-family: var(--font-head); color: var(--text-strong); line-height: 1.25; margin: 0 0 var(--space-2); font-weight: 700; text-wrap: balance; }
h1 { font-size: 1.75rem; letter-spacing: -.01em; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1rem; }
p { margin: 0 0 var(--space-3); }
a { color: var(--primary); text-underline-offset: 2px; }
small, .small { font-size: .875rem; }
.muted { color: var(--muted); }
.num { font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 200; background: var(--primary); color: var(--on-primary); padding: 8px 14px; border-radius: 8px; }
.skip:focus { left: 8px; }
svg.i { width: 20px; height: 20px; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } }

/* ---------- shell ---------- */
.top { position: sticky; top: 0; z-index: var(--z-header); background: var(--surface); border-bottom: 1px solid var(--line); }
.top-inner { max-width: 1120px; margin: 0 auto; padding: var(--space-2) var(--space-4); display: flex; align-items: center; gap: var(--space-4); min-height: 60px; }
.brand { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-head); font-weight: 700; color: var(--text-strong); text-decoration: none; white-space: nowrap; }
.brand .mark { width: 32px; height: 32px; border-radius: 9px; background: var(--primary); color: var(--on-primary); display: grid; place-items: center; }
.brand .mark svg { width: 18px; height: 18px; }
.nav { display: flex; gap: var(--space-1); flex: 1; }
.nav a { display: inline-flex; align-items: center; gap: var(--space-2); min-height: 44px; padding: 0 var(--space-3); border-radius: var(--radius-sm); color: var(--muted); text-decoration: none; font-weight: 500; transition: background var(--t) var(--ease), color var(--t) var(--ease); }
.nav a:hover { background: var(--surface-2); color: var(--text-strong); }
.nav a[aria-current="page"] { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.me { display: flex; align-items: center; gap: var(--space-2); margin-left: auto; }
.me .who { display: inline-flex; align-items: center; gap: var(--space-2); min-height: 44px; padding: 0 var(--space-3); border-radius: var(--radius-sm); color: var(--muted); text-decoration: none; max-width: 220px; }
.me .who span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.me .who:hover { background: var(--surface-2); color: var(--text-strong); }
main { max-width: 1120px; margin: 0 auto; padding: var(--space-5) var(--space-4) var(--space-7); }
main:focus { outline: none; }
.bottom-nav { display: none; }
@media (max-width: 860px) {
  .nav { display: none; }
  .me .who span { display: none; }
  .bottom-nav {
    display: flex; position: fixed; inset: auto 0 0 0; z-index: var(--z-bottomnav);
    background: var(--surface); border-top: 1px solid var(--line);
    padding: 4px 4px calc(4px + env(safe-area-inset-bottom));
  }
  .bottom-nav a { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-height: 56px; color: var(--muted); text-decoration: none; font-size: .75rem; font-weight: 500; border-radius: var(--radius-sm); }
  .bottom-nav a[aria-current="page"] { color: var(--primary); background: var(--primary-soft); }
  main { padding-bottom: calc(96px + env(safe-area-inset-bottom)); }
  h1 { font-size: 1.45rem; }
}

/* ---------- surfaces ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: var(--space-5); margin-bottom: var(--space-4); }
.card.tight { padding: var(--space-4); }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; margin-bottom: var(--space-5); }
.page-head p { margin: var(--space-1) 0 0; }
.row { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-3); }
.row-between h2 { margin: 0; }
.grid { display: grid; gap: var(--space-4); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid.stats { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); margin-bottom: var(--space-4); }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: var(--space-4); display: flex; flex-direction: column; gap: 2px; }
.stat .label { color: var(--muted); font-size: .875rem; display: flex; align-items: center; gap: var(--space-2); }
.stat .value { font-family: var(--font-head); font-size: 1.85rem; font-weight: 700; color: var(--text-strong); font-variant-numeric: tabular-nums; line-height: 1.2; }
.stat .value small { font-size: 1rem; color: var(--muted); font-weight: 500; }
.stat .hint { font-size: .8125rem; color: var(--muted); }
.empty { text-align: center; padding: var(--space-7) var(--space-4); }
.empty svg.i { width: 40px; height: 40px; color: var(--muted); margin-bottom: var(--space-3); }
.boot, .loading { padding: var(--space-7) var(--space-4); text-align: center; color: var(--muted); }
.skeleton { height: 14px; border-radius: 6px; background: linear-gradient(90deg, var(--surface-2), var(--line), var(--surface-2)); background-size: 200% 100%; animation: shimmer 1.2s infinite linear; margin: 10px 0; }
@keyframes shimmer { to { background-position: -200% 0; } }

/* ---------- buttons & forms ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 44px; padding: 0 var(--space-4); border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong); background: var(--surface); color: var(--text-strong);
  font: 600 .95rem var(--font-body); cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease), transform 120ms var(--ease);
  touch-action: manipulation;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: scale(.98); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.btn.primary:hover:not(:disabled) { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn.ghost { border-color: transparent; background: transparent; color: var(--muted); }
.btn.ghost:hover { background: var(--surface-2); color: var(--text-strong); }
.btn.danger { color: var(--bad); border-color: var(--bad); background: transparent; }
.btn.danger:hover { background: var(--bad-soft); }
.btn.sm { min-height: 36px; padding: 0 var(--space-3); font-size: .875rem; }
.btn.lg { min-height: 52px; padding: 0 var(--space-5); font-size: 1.05rem; }
.btn.block { width: 100%; }
.btn-row { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; }
label.field { display: block; font-weight: 600; font-size: .9rem; color: var(--text-strong); margin-bottom: var(--space-4); }
label.field .help { display: block; font-weight: 400; color: var(--muted); font-size: .8125rem; margin-top: 2px; }
input, select, textarea {
  display: block; width: 100%; margin-top: 6px; min-height: 44px;
  font: 400 1rem var(--font-body); color: var(--text-strong);
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius-sm); padding: 10px 12px;
}
textarea { min-height: 96px; resize: vertical; }
input[type=checkbox], input[type=radio] { width: 20px; height: 20px; min-height: 0; margin: 0; accent-color: var(--primary); flex: none; display: inline-block; }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--focus); outline-offset: 0; }
.form-error { color: var(--bad); font-size: .9rem; margin: var(--space-2) 0 0; min-height: 1px; }
.form-error:empty { display: none; }
.inline-form { display: flex; gap: var(--space-2); align-items: flex-end; flex-wrap: wrap; }
.inline-form label.field { flex: 1; min-width: 200px; margin: 0; }
.input-btn { display: flex; gap: var(--space-2); align-items: center; margin-top: 6px; }
.input-btn input { margin: 0; }

/* segmented choice (radio cards) */
.choices { display: grid; gap: var(--space-2); grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); margin-bottom: var(--space-4); }
.choice { position: relative; display: flex; gap: var(--space-3); align-items: flex-start; padding: var(--space-3) var(--space-4); border: 1px solid var(--line-strong); border-radius: var(--radius-sm); cursor: pointer; background: var(--surface); transition: border-color var(--t) var(--ease), background var(--t) var(--ease); }
.choice:hover { border-color: var(--primary); }
.choice:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); box-shadow: inset 0 0 0 1px var(--primary); }
.choice:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }
.choice input { margin-top: 3px; }
.choice b { display: block; color: var(--text-strong); }
.choice small { color: var(--muted); display: block; line-height: 1.45; }
fieldset { border: 0; padding: 0; margin: 0 0 var(--space-2); }
legend { font-family: var(--font-head); font-weight: 700; color: var(--text-strong); margin-bottom: var(--space-2); font-size: 1rem; padding: 0; }

/* ---------- topic picker ---------- */
.disc { border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: var(--space-2); background: var(--surface); }
.disc > summary { list-style: none; display: flex; align-items: center; gap: var(--space-3); padding: var(--space-3) var(--space-4); cursor: pointer; min-height: 56px; border-radius: var(--radius-sm); }
.disc > summary::-webkit-details-marker { display: none; }
.disc > summary:hover { background: var(--surface-2); }
.disc > summary .chev { margin-left: auto; transition: transform var(--t) var(--ease); color: var(--muted); }
.disc[open] > summary .chev { transform: rotate(90deg); }
.disc .dname { font-weight: 600; color: var(--text-strong); }
.disc .dmeta { color: var(--muted); font-size: .85rem; }
.disc .topics { padding: 0 var(--space-4) var(--space-3) calc(var(--space-4) + 32px); display: grid; gap: 2px; }
.topic { display: flex; align-items: center; gap: var(--space-3); min-height: 44px; padding: 4px var(--space-2); border-radius: 6px; cursor: pointer; }
.topic:hover { background: var(--surface-2); }
.topic .tname { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.topic .tmeta { color: var(--muted); font-size: .8125rem; white-space: nowrap; font-variant-numeric: tabular-nums; }
.sticky-start { position: sticky; bottom: var(--space-4); z-index: 5; }
@media (max-width: 860px) { .sticky-start { bottom: calc(76px + env(safe-area-inset-bottom)); } }
.start-bar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: var(--space-3) var(--space-4); box-shadow: 0 6px 24px rgba(15, 47, 45, .12); }

/* ---------- chips, bars ---------- */
.chip { display: inline-flex; align-items: center; gap: 4px; font-size: .75rem; font-weight: 600; padding: 2px 8px; border-radius: 99px; background: var(--surface-2); color: var(--muted); white-space: nowrap; }
.chip.ok { background: var(--ok-soft); color: var(--ok); }
.chip.bad { background: var(--bad-soft); color: var(--bad); }
.chip.warn { background: var(--warn-soft); color: var(--warn); }
.chip.pri { background: var(--primary-soft); color: var(--primary); }
.bar { display: block; height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; min-width: 60px; }
.bar > span { display: block; height: 100%; background: var(--primary); border-radius: 99px; }
.bar.ok > span { background: var(--ok); }
.bar.warn > span { background: var(--warn); }
.bar.bad > span { background: var(--bad); }

/* ---------- question runner ---------- */
.runner { display: grid; gap: var(--space-4); grid-template-columns: 1fr; max-width: 820px; margin: 0 auto; }
.runner.exam { max-width: 1120px; grid-template-columns: 1fr 300px; align-items: start; }
@media (max-width: 960px) { .runner.exam { grid-template-columns: 1fr; } }
.run-top { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-2); }
.run-top .pos { color: var(--muted); font-variant-numeric: tabular-nums; }
.progress { height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; margin-bottom: var(--space-4); }
.progress > span { display: block; height: 100%; background: var(--primary); transition: width 300ms var(--ease); }
.qcard { padding: var(--space-5); }
.qmeta { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-3); }
.qtext { font-family: var(--font-body); font-size: 1.15rem; font-weight: 600; color: var(--text-strong); white-space: pre-wrap; margin-bottom: var(--space-2); line-height: 1.5; max-width: 72ch; }
.qhint { color: var(--muted); font-size: .9rem; margin-bottom: var(--space-4); display: flex; align-items: center; gap: var(--space-2); }
.options { display: grid; gap: var(--space-2); }
.opt {
  display: flex; gap: var(--space-3); align-items: flex-start; width: 100%; text-align: left;
  font: 400 1rem/1.5 var(--font-body); color: var(--text-strong); background: var(--surface); cursor: pointer;
  border: 1.5px solid var(--line-strong); border-radius: var(--radius-sm); padding: var(--space-3) var(--space-4); min-height: 52px;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}
.opt:hover:not(:disabled) { border-color: var(--primary); }
.opt[aria-checked="true"], .opt[aria-pressed="true"] { border-color: var(--primary); background: var(--primary-soft); }
.opt:disabled { cursor: default; }
.opt .key { flex: none; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 7px; font-weight: 700; font-size: .85rem; background: var(--surface-2); color: var(--muted); border: 1px solid var(--line); }
.opt[aria-checked="true"] .key, .opt[aria-pressed="true"] .key { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.opt.multi .key { border-radius: 5px; }
.opt .otext { padding-top: 3px; white-space: pre-wrap; flex: 1; min-width: 0; overflow-wrap: anywhere; }
.opt .mark { flex: none; display: inline-flex; align-items: center; gap: 4px; font-size: .8rem; font-weight: 700; padding-top: 5px; }
.opt.correct { border-color: var(--ok); background: var(--ok-soft); }
.opt.correct .key { background: var(--ok); color: #fff; border-color: var(--ok); }
.opt.correct .mark { color: var(--ok); }
.opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.opt.wrong .key { background: var(--bad); color: #fff; border-color: var(--bad); }
.opt.wrong .mark { color: var(--bad); }
.opt.missed { border-color: var(--ok); border-style: dashed; }
.opt.missed .mark { color: var(--ok); }
.opt.dim { opacity: .7; }
.feedback { margin-top: var(--space-4); padding-top: var(--space-4); border-top: 1px solid var(--line); }
.feedback:empty { display: none; }
.verdict { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-head); font-weight: 700; font-size: 1.1rem; margin-bottom: var(--space-3); }
.verdict.ok { color: var(--ok); }
.verdict.bad { color: var(--bad); }
.verdict.part { color: var(--warn); }
.verdict span { font-family: var(--font-body); font-weight: 400; font-size: .95rem; color: var(--muted); }
.run-actions { display: flex; justify-content: space-between; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-4); }
.keys-hint { color: var(--muted); font-size: .8125rem; text-align: center; margin-top: var(--space-2); }
@media (hover: none) { .keys-hint { display: none; } }

/* exam side panel */
.side { position: sticky; top: 76px; }
.timer { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-head); font-weight: 700; font-size: 1.35rem; font-variant-numeric: tabular-nums; color: var(--text-strong); }
.timer.low { color: var(--bad); }
.qgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(40px, 1fr)); gap: 6px; margin: var(--space-3) 0; max-height: 46vh; overflow-y: auto; padding: 2px; }
.qgrid button { position: relative; min-height: 40px; border-radius: 7px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--text-strong); font: 600 .85rem var(--font-body); cursor: pointer; font-variant-numeric: tabular-nums; }
.qgrid button.answered { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }
.qgrid button.current { outline: 3px solid var(--focus); outline-offset: 1px; }
.qgrid button.flagged::after { content: ""; position: absolute; top: 3px; right: 3px; width: 7px; height: 7px; border-radius: 50%; background: var(--warn); }
.legend-row { display: flex; gap: var(--space-3); flex-wrap: wrap; font-size: .8rem; color: var(--muted); }
.legend-row i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 4px; vertical-align: -1px; border: 1px solid var(--line-strong); }
.legend-row i.a { background: var(--primary-soft); border-color: var(--primary); }
.legend-row i.f { background: var(--warn); border-color: var(--warn); border-radius: 50%; }

/* ---------- results ---------- */
.result-head { display: flex; gap: var(--space-5); align-items: center; flex-wrap: wrap; }
.ring { --p: 0; --c: var(--primary); width: 132px; height: 132px; border-radius: 50%; flex: none; background: conic-gradient(var(--c) calc(var(--p) * 1%), var(--surface-2) 0); display: grid; place-items: center; }
.ring span { width: 104px; height: 104px; border-radius: 50%; background: var(--surface); display: grid; place-items: center; font-family: var(--font-head); font-size: 1.75rem; font-weight: 700; color: var(--text-strong); font-variant-numeric: tabular-nums; }
.review { list-style: none; padding: 0; margin: 0; }
.review > li { padding: var(--space-4) 0; border-bottom: 1px solid var(--line); }
.review > li:last-child { border-bottom: 0; }
.review .rq { font-weight: 600; color: var(--text-strong); margin-bottom: var(--space-2); white-space: pre-wrap; }
.review .ropts { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; font-size: .95rem; }
.review .ropts li { display: flex; gap: var(--space-2); align-items: flex-start; padding: 4px 8px; border-radius: 6px; }
.review .ropts li b { flex: none; width: 1.4rem; color: var(--muted); }
.review .ropts li.c { background: var(--ok-soft); color: var(--ok); font-weight: 600; }
.review .ropts li.c b { color: var(--ok); }
.review .ropts li.w { background: var(--bad-soft); color: var(--bad); text-decoration: line-through; }
.review .ropts li.w b { color: var(--bad); }
.review .ropts li .tag { margin-left: auto; font-size: .75rem; font-weight: 700; text-decoration: none; white-space: nowrap; }
.filters { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.filters .btn[aria-pressed="true"] { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; margin: 0 calc(-1 * var(--space-5)); padding: 0 var(--space-5); }
table { width: 100%; border-collapse: collapse; font-size: .925rem; }
th { text-align: left; font-size: .75rem; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); font-weight: 600; padding: var(--space-2) var(--space-3); border-bottom: 1px solid var(--line-strong); white-space: nowrap; }
td { padding: var(--space-3); border-bottom: 1px solid var(--line); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; }
tr.inactive td { opacity: .55; }
tr.group td { background: var(--surface-2); font-weight: 600; color: var(--text-strong); }
.cov { display: flex; align-items: center; gap: var(--space-2); min-width: 150px; }
.cov .bar { flex: 1; }
.cov small { color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.acc { font-weight: 700; font-variant-numeric: tabular-nums; }
.acc.hi { color: var(--ok); }
.acc.mid { color: var(--warn); }
.acc.lo { color: var(--bad); }

/* ---------- chart ---------- */
.chart-box { position: relative; height: 300px; }
@media (max-width: 600px) { .chart-box { height: 240px; } }
.chart-summary { margin: var(--space-3) 0 0; }
details.data-table summary { cursor: pointer; color: var(--primary); font-weight: 600; min-height: 44px; display: inline-flex; align-items: center; }

/* ---------- auth ---------- */
.auth-wrap { min-height: 100dvh; display: grid; place-items: center; padding: var(--space-4); }
.auth { width: 100%; max-width: 400px; padding: var(--space-6) var(--space-5); }
.auth .brand { justify-content: center; margin-bottom: var(--space-4); font-size: 1.15rem; }
.auth .brand .mark { width: 40px; height: 40px; }
.auth h1 { text-align: center; font-size: 1.4rem; }
.auth p.muted { text-align: center; }
.pw { position: relative; }
.pw input { padding-right: 52px; }
.pw button { position: absolute; right: 4px; bottom: 4px; min-height: 36px; }

/* ---------- admin ---------- */
.tabs { display: flex; gap: var(--space-1); border-bottom: 1px solid var(--line); margin-bottom: var(--space-5); overflow-x: auto; }
.tabs a { display: inline-flex; align-items: center; gap: var(--space-2); min-height: 44px; padding: 0 var(--space-4); color: var(--muted); text-decoration: none; font-weight: 600; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tabs a[aria-current="page"] { color: var(--primary); border-bottom-color: var(--primary); }
.qlist { list-style: none; padding: 0; margin: 0; }
.qlist > li { padding: var(--space-4) 0; border-bottom: 1px solid var(--line); }
.qlist > li.inactive { opacity: .6; }
.weights { display: grid; gap: var(--space-2); }
.weights .wrow { display: grid; grid-template-columns: 1fr 96px 70px; gap: var(--space-3); align-items: center; }
.weights input { margin: 0; text-align: right; }
.created { border-color: var(--ok); }
.created pre { background: var(--surface-2); border-radius: var(--radius-sm); padding: var(--space-3); white-space: pre-wrap; user-select: all; font-size: .9rem; }
.import-progress { margin-top: var(--space-3); }

/* ---------- toasts ---------- */
#toasts { position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: var(--z-toast); display: flex; flex-direction: column; gap: var(--space-2); width: min(92vw, 420px); pointer-events: none; }
@media (max-width: 860px) { #toasts { bottom: calc(84px + env(safe-area-inset-bottom)); } }
.toast { pointer-events: auto; display: flex; align-items: center; gap: var(--space-2); background: var(--text-strong); color: var(--bg); padding: 12px 16px; border-radius: 10px; box-shadow: 0 8px 28px rgba(0, 0, 0, .2); font-size: .95rem; transition: opacity 240ms var(--ease), transform 240ms var(--ease); }
.toast.ok { background: var(--ok); color: #fff; }
.toast.bad { background: var(--bad); color: #fff; }
.toast.out { opacity: 0; transform: translateY(6px); }
@media (prefers-color-scheme: dark) { .toast.ok, .toast.bad { color: #0a1517; } }

/* Test builder & marks */
.choices.four { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.choice .count { font-weight: 500; color: var(--muted); }
.qmeta .mark-btn { margin-left: auto; min-height: 32px; padding: 4px 10px; }
.qmeta .mark-btn[aria-pressed="true"], #exFlag[aria-pressed="true"] { color: var(--warn); }
.pool-links { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.choices.one { grid-template-columns: 1fr; }