/* A2-øvelsesprøve — Design Roed */

:root {
  color-scheme: light dark;

  --bg: #f5f6f8;
  --bg-soft: #eceef2;
  --card: #ffffff;
  --card-2: #f7f8fa;
  --line: #dfe3ea;
  --line-soft: #e9ecf1;
  --ink: #151a21;
  --ink-2: #4a5461;
  --dim: #78828f;

  --accent: #0b6bcb;
  --accent-ink: #ffffff;
  --accent-soft: #e7f0fb;
  --accent-line: #b9d4f2;

  --ok: #12795a;
  --ok-soft: #e2f4ee;
  --ok-line: #a9ddcb;

  --bad: #c0332c;
  --bad-soft: #fdeceb;
  --bad-line: #f3c2be;

  --warn: #9a6100;
  --warn-soft: #fdf2dd;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px -12px rgba(16, 24, 40, .18);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

html[data-theme="dark"] {
  --bg: #0f1319;
  --bg-soft: #151b23;
  --card: #171d26;
  --card-2: #1d2430;
  --line: #2a3341;
  --line-soft: #232b37;
  --ink: #e9edf3;
  --ink-2: #b3bdcb;
  --dim: #7d8899;

  --accent: #58a6ff;
  --accent-ink: #0b1017;
  --accent-soft: #17293f;
  --accent-line: #2c4a6d;

  --ok: #4fd1a5;
  --ok-soft: #122c25;
  --ok-line: #1f5344;

  --bad: #ff8079;
  --bad-soft: #331b1a;
  --bad-line: #5e2f2c;

  --warn: #ffc65c;
  --warn-soft: #33291320;

  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px -14px rgba(0, 0, 0, .7);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.wrap { width: 100%; max-width: 720px; margin: 0 auto; padding: 0 16px; }
main.wrap { flex: 1; padding-bottom: 40px; }

h1, h2, h3 { line-height: 1.25; margin: 0; letter-spacing: -.015em; }
p { margin: 0; }
a { color: var(--accent); }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px;
  padding-top: max(10px, env(safe-area-inset-top));
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; min-width: 0; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-mark circle { fill: none; stroke: var(--accent); stroke-width: 1.6; opacity: .55; }
.brand-mark .arms { stroke: var(--accent); stroke-width: 2.2; stroke-linecap: round; }
.brand-mark .body { fill: var(--accent); }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-text strong { font-size: 15px; letter-spacing: -.01em; }
.brand-text small { font-size: 11.5px; color: var(--dim); letter-spacing: .04em; text-transform: uppercase; }

.icon-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--ink-2);
  width: 36px; height: 36px; border-radius: 10px; cursor: pointer; font-size: 16px;
  display: grid; place-items: center; flex: none;
}
.icon-btn:hover { border-color: var(--accent-line); color: var(--ink); }

/* ---------- generic ---------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.stack > * + * { margin-top: 14px; }

.btn {
  appearance: none; font: inherit; font-weight: 550; cursor: pointer;
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  padding: 12px 18px; border-radius: var(--radius-sm);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  transition: background .12s ease, border-color .12s ease, transform .06s ease;
}
.btn:hover { border-color: var(--accent-line); background: var(--card-2); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.06); background: var(--accent); }
.btn.ghost { background: transparent; }
.btn.wide { width: 100%; }
.btn.sm { padding: 8px 13px; font-size: 14px; }
.btn:disabled { opacity: .5; cursor: default; }

.dim { color: var(--dim); }
.tiny { font-size: 13px; }

/* ---------- start screen ---------- */
.hero { padding: 30px 0 6px; }
.hero h1 { font-size: clamp(26px, 6vw, 36px); }
.hero p.lead { color: var(--ink-2); margin-top: 10px; font-size: 16px; }

.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 18px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px; text-align: center; }
.kpi b { display: block; font-size: 20px; font-variant-numeric: tabular-nums; }
.kpi span { font-size: 11.5px; color: var(--dim); text-transform: uppercase; letter-spacing: .05em; }

.mastery { margin-top: 14px; }
.mastery .bar { height: 8px; border-radius: 99px; background: var(--bg-soft); overflow: hidden; border: 1px solid var(--line-soft); }
.mastery .bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--ok) 70%, var(--accent))); transition: width .5s ease; }
.mastery .row { display: flex; justify-content: space-between; font-size: 13px; color: var(--dim); margin-bottom: 6px; }

.modes { display: grid; gap: 12px; margin-top: 22px; }
.mode {
  display: flex; align-items: flex-start; gap: 14px; text-align: left; width: 100%;
  padding: 16px; border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--card); cursor: pointer; font: inherit; color: inherit;
  transition: border-color .12s ease, transform .08s ease, background .12s ease;
}
.mode:hover { border-color: var(--accent); transform: translateY(-1px); }
.mode:disabled { opacity: .55; cursor: default; transform: none; }
.mode .ico { font-size: 22px; line-height: 1.2; flex: none; width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: var(--accent-soft); border: 1px solid var(--accent-line); }
.mode .mtitle { display: block; font-size: 16.5px; font-weight: 600; letter-spacing: -.01em; }
.mode p { font-size: 14px; color: var(--ink-2); margin-top: 3px; }
.mode .meta { font-size: 12.5px; color: var(--dim); margin-top: 6px; font-variant-numeric: tabular-nums; }

.section-title { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--dim); margin: 26px 0 10px; font-weight: 600; }

.cats { display: flex; flex-wrap: wrap; gap: 8px; }
.cat {
  font: inherit; font-size: 13.5px; cursor: pointer;
  border: 1px solid var(--line); background: var(--card); color: var(--ink-2);
  padding: 7px 12px; border-radius: 99px; display: inline-flex; align-items: center; gap: 7px;
}
.cat:hover { border-color: var(--accent-line); }
.cat[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent-line); color: var(--ink); }
.cat b { font-variant-numeric: tabular-nums; font-weight: 600; color: var(--dim); font-size: 12px; }
.cat .score { font-size: 12px; }

/* ---------- quiz ---------- */
.quizbar { display: flex; align-items: center; gap: 12px; padding: 16px 0 10px; }
.quizbar .back { flex: none; }
.progress { flex: 1; }
.progress .row { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--dim); margin-bottom: 5px; font-variant-numeric: tabular-nums; }
.progress .track { height: 6px; background: var(--bg-soft); border: 1px solid var(--line-soft); border-radius: 99px; overflow: hidden; }
.progress .track i { display: block; height: 100%; background: var(--accent); transition: width .35s ease; }
.timer { font-variant-numeric: tabular-nums; font-family: var(--mono); font-size: 14px; padding: 6px 10px; border-radius: 8px; background: var(--card); border: 1px solid var(--line); flex: none; }
.timer.low { color: var(--bad); border-color: var(--bad-line); background: var(--bad-soft); }

.qcard { padding: 20px; }
.qcat { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--ink-2); background: var(--card-2); border: 1px solid var(--line-soft); padding: 4px 10px; border-radius: 99px; }
.qtext { font-size: clamp(17px, 4.2vw, 20px); font-weight: 550; margin-top: 14px; letter-spacing: -.01em; }

.opts { display: grid; gap: 9px; margin-top: 18px; }
.opt {
  display: flex; align-items: flex-start; gap: 12px; text-align: left; width: 100%;
  font: inherit; font-size: 15.5px; cursor: pointer; color: var(--ink);
  background: var(--card-2); border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  padding: 13px 15px; transition: border-color .12s ease, background .12s ease;
}
.opt:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-soft); }
.opt:disabled { cursor: default; }
.opt .key {
  flex: none; width: 24px; height: 24px; border-radius: 7px; display: grid; place-items: center;
  font-size: 12.5px; font-weight: 600; font-family: var(--mono);
  background: var(--card); border: 1px solid var(--line); color: var(--dim);
}
.opt.chosen { border-color: var(--accent); background: var(--accent-soft); }
.opt.chosen .key { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.opt.correct { border-color: var(--ok-line); background: var(--ok-soft); }
.opt.correct .key { background: var(--ok); color: #fff; border-color: var(--ok); }
.opt.wrong { border-color: var(--bad-line); background: var(--bad-soft); }
.opt.wrong .key { background: var(--bad); color: #fff; border-color: var(--bad); }

.explain { margin-top: 14px; border-radius: var(--radius-sm); padding: 14px 16px; font-size: 14.5px; border: 1px solid; animation: pop .18s ease; }
.explain b { display: block; margin-bottom: 3px; }
.explain.ok { background: var(--ok-soft); border-color: var(--ok-line); }
.explain.ok b { color: var(--ok); }
.explain.no { background: var(--bad-soft); border-color: var(--bad-line); }
.explain.no b { color: var(--bad); }
@keyframes pop { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

.qnav { display: flex; gap: 10px; margin-top: 14px; }
.qnav .btn { flex: 1; }
.hint { text-align: center; font-size: 12.5px; color: var(--dim); margin-top: 12px; }
kbd { font-family: var(--mono); font-size: 11.5px; background: var(--card); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 1px 5px; color: var(--ink-2); }

/* ---------- result ---------- */
.result-head { text-align: center; padding: 26px 20px; }
.ring { width: 132px; height: 132px; margin: 0 auto 16px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--ring-color) calc(var(--pct) * 1%), var(--bg-soft) 0); }
.ring .inner { width: 106px; height: 106px; border-radius: 50%; background: var(--card); display: grid; place-items: center; align-content: center; }
.ring .pct { font-size: 30px; font-weight: 650; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.ring .frac { font-size: 12.5px; color: var(--dim); font-variant-numeric: tabular-nums; }
.verdict { font-size: 20px; font-weight: 600; }
.verdict.pass { color: var(--ok); }
.verdict.fail { color: var(--bad); }
.result-head p.sub { color: var(--ink-2); margin-top: 8px; font-size: 15px; }

.breakdown { padding: 16px 18px; }
.brow { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: center; padding: 9px 0; border-bottom: 1px solid var(--line-soft); }
.brow:last-child { border-bottom: 0; }
.brow .name { font-size: 14.5px; }
.brow .num { font-size: 13px; color: var(--dim); font-variant-numeric: tabular-nums; }
.brow .track { grid-column: 1 / -1; height: 5px; border-radius: 99px; background: var(--bg-soft); overflow: hidden; }
.brow .track i { display: block; height: 100%; background: var(--ok); }
.brow.poor .track i { background: var(--bad); }
.brow.mid .track i { background: var(--warn); }

.review { padding: 4px 18px 10px; }
.rev { padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
.rev:last-child { border-bottom: 0; }
.rev .q { font-weight: 550; font-size: 15px; }
.rev .line { font-size: 14px; margin-top: 6px; display: flex; gap: 8px; align-items: baseline; }
.rev .tag { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; font-weight: 600; flex: none; width: 52px; }
.rev .tag.no { color: var(--bad); }
.rev .tag.ok { color: var(--ok); }
.rev .exp { font-size: 13.5px; color: var(--ink-2); margin-top: 8px; background: var(--card-2); border-left: 3px solid var(--accent-line); padding: 9px 12px; border-radius: 0 8px 8px 0; }

/* ---------- misc ---------- */
.notice { padding: 14px 16px; font-size: 14px; background: var(--warn-soft); border: 1px solid color-mix(in srgb, var(--warn) 35%, transparent); border-radius: var(--radius-sm); color: var(--ink-2); }
.foot { padding: 22px 16px 34px; font-size: 13px; color: var(--ink-2); border-top: 1px solid var(--line-soft); }
.foot p + p { margin-top: 6px; }
.row-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.row-btns .btn { flex: 1; min-width: 150px; }

@media (max-width: 420px) {
  .qcard { padding: 16px; }
  .kpi b { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}