/* =========================================================================
   Testträning – kognitiva urvalstester. Mobil-först, touch-vänlig, PWA.
   ====================================================================== */

:root {
  --bg: #0a1420;
  --bg-elev: #131f2e;
  --bg-elev-2: #1b2a3c;
  --ink: #eef3f9;
  --ink-dim: #9fb2c6;
  --line: #2a3b50;
  --accent: #ffca28;
  --accent-ink: #201a05;
  --ok: #37c871;
  --ok-bg: #123020;
  --bad: #ff5d5d;
  --bad-bg: #331616;
  --radius: 16px;
  --tap: 52px;
  --maxw: 640px;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f3f5f9;
    --bg-elev: #ffffff;
    --bg-elev-2: #eef2f7;
    --ink: #16202e;
    --ink-dim: #5a6b7e;
    --line: #d7dee8;
    --accent: #f0a500;
    --accent-ink: #2a1d00;
    --ok: #1c9e57;
    --ok-bg: #e2f5ea;
    --bad: #d63a3a;
    --bad-bg: #fbe6e6;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  overscroll-behavior-y: none;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
}

#app {
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
}

/* ---------- Skärmar ---------- */
.screen { display: none; flex-direction: column; min-height: 100vh; min-height: 100dvh; }
.screen.active { display: flex; }

.hero {
  text-align: center;
  padding: calc(var(--safe-t) + 28px) 20px 8px;
}
.hero-badge {
  width: 72px; height: 72px; margin: 0 auto 12px;
  display: grid; place-items: center;
  background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: 20px;
}
.hero h1 { font-size: 1.9rem; letter-spacing: -0.02em; }
.hero-sub { color: var(--ink-dim); margin-top: 6px; padding: 0 6px; }

/* ---------- Kort ---------- */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin: 12px 16px 0;
}
.card h2 { font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-dim); margin-bottom: 12px; }

/* ---------- Lägesval ---------- */
.mode-grid { display: grid; gap: 10px; }
.mode-btn {
  text-align: left;
  background: var(--bg-elev-2);
  border: 2px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  color: var(--ink);
  cursor: pointer;
  display: grid; gap: 4px;
  transition: border-color .15s, background .15s;
}
.mode-btn .mode-title { font-weight: 700; font-size: 1.1rem; }
.mode-btn .mode-desc { color: var(--ink-dim); font-size: 0.92rem; }
.mode-btn[aria-checked="true"] {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, var(--bg-elev-2));
}

/* ---------- Chips ---------- */
.chip-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  min-height: var(--tap);
  padding: 10px 16px;
  border-radius: 999px;
  border: 2px solid var(--line);
  background: var(--bg-elev-2);
  color: var(--ink);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  flex: 1 1 auto;
  transition: border-color .15s, background .15s, color .15s;
}
.chip[aria-pressed="true"], .chip[aria-checked="true"] {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, var(--bg-elev-2));
}
.chip-all { width: 100%; margin-top: 8px; flex: none; }
.chip small { display: block; font-weight: 400; color: var(--ink-dim); font-size: 0.8rem; }

/* ---------- Knappar ---------- */
.btn {
  display: block; width: calc(100% - 32px);
  margin: 12px 16px 0;
  min-height: var(--tap);
  padding: 14px 18px;
  border-radius: 14px;
  border: 2px solid transparent;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
}
.btn-lg { min-height: 58px; font-size: 1.15rem; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:active { filter: brightness(.94); }
.btn-primary:disabled { opacity: .5; cursor: default; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:active { background: var(--bg-elev); }

.home-links { display: flex; gap: 10px; margin: 20px 16px calc(var(--safe-b) + 24px); }
.home-links .btn { margin: 0; flex: 1; min-height: 46px; font-size: 0.98rem; }

.err { color: var(--bad); text-align: center; margin-top: 10px; font-size: 0.95rem; }

/* ---------- Quiz topbar ---------- */
.quiz-topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 10px;
  padding: calc(var(--safe-t) + 10px) 14px 10px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.icon-btn {
  flex: none;
  width: 40px; height: 40px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--ink);
  font-size: 1.1rem;
  cursor: pointer;
}
.progress-wrap { flex: 1; display: flex; flex-direction: column; gap: 5px; }
.progress-track { height: 7px; background: var(--bg-elev-2); border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; width: 0%; background: var(--accent); border-radius: 999px; transition: width .3s ease; }
.progress-label { font-size: 0.82rem; color: var(--ink-dim); font-weight: 600; }
.timer {
  flex: none;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: 1.15rem;
  padding: 6px 10px;
  border-radius: 10px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  min-width: 68px; text-align: center;
}
.timer.warn { color: var(--bad); border-color: var(--bad); }

/* ---------- Quiz body ---------- */
.quiz-body { flex: 1; padding: 16px 16px 8px; overflow-y: auto; }
.q-meta { display: flex; gap: 8px; margin-bottom: 10px; }
.q-cat, .q-diff {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
  padding: 4px 9px; border-radius: 999px;
  background: var(--bg-elev-2); color: var(--ink-dim);
}
.q-cat { color: var(--accent); }
.q-text {
  font-size: 1.15rem;
  line-height: 1.55;
  white-space: pre-wrap;
  margin-bottom: 14px;
}

/* Tabeller i frågor */
.q-table-wrap { overflow-x: auto; margin-bottom: 14px; }
.q-table-wrap:empty { display: none; }
table.qtable {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.98rem;
}
table.qtable th, table.qtable td {
  border: 1px solid var(--line);
  padding: 9px 12px;
  text-align: left;
}
table.qtable th { background: var(--bg-elev-2); font-weight: 700; }
table.qtable td:not(:first-child), table.qtable th:not(:first-child) { text-align: right; font-variant-numeric: tabular-nums; }

/* Figur / SVG */
.q-fig { margin: 4px 0 16px; text-align: center; }
.q-fig:empty { display: none; }
.q-fig .fig { max-width: 100%; height: auto; color: var(--ink); }
.q-fig svg.fig { max-height: 260px; }

/* ---------- Alternativ ---------- */
.options { display: grid; gap: 10px; }
.options.svg-grid { grid-template-columns: 1fr 1fr; }
.opt {
  display: flex; align-items: center; gap: 12px;
  width: 100%;
  min-height: var(--tap);
  padding: 14px 16px;
  border-radius: 13px;
  border: 2px solid var(--line);
  background: var(--bg-elev);
  color: var(--ink);
  font-size: 1.05rem;
  text-align: left;
  cursor: pointer;
  transition: border-color .12s, background .12s;
}
.opt:active { background: var(--bg-elev-2); }
.opt .opt-key {
  flex: none;
  width: 28px; height: 28px;
  border-radius: 8px;
  display: grid; place-items: center;
  background: var(--bg-elev-2);
  font-weight: 800; font-size: 0.9rem;
  color: var(--ink-dim);
}
.svg-grid .opt { flex-direction: column; text-align: center; padding: 12px; }
.opt-svg { width: 100%; max-width: 110px; height: auto; color: var(--ink); }
.opt.chosen { border-color: var(--accent); }
.opt.correct { border-color: var(--ok); background: var(--ok-bg); }
.opt.correct .opt-key { background: var(--ok); color: #fff; }
.opt.wrong { border-color: var(--bad); background: var(--bad-bg); }
.opt.wrong .opt-key { background: var(--bad); color: #fff; }
.opt:disabled { cursor: default; }
.opt.dim { opacity: .55; }

/* ---------- Feedback ---------- */
.feedback {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  background: var(--bg-elev);
}
.feedback-head { font-weight: 800; font-size: 1.1rem; margin-bottom: 6px; }
.feedback-head.ok { color: var(--ok); }
.feedback-head.bad { color: var(--bad); }
.feedback-answer { font-weight: 600; margin-bottom: 10px; }
.feedback-steps p {
  position: relative;
  padding-left: 22px;
  margin-bottom: 8px;
  color: var(--ink);
}
.feedback-steps p::before {
  content: "";
  position: absolute; left: 4px; top: 10px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}
.feedback-steps p:last-child { margin-bottom: 0; }

/* ---------- Quiz foot ---------- */
.quiz-foot {
  position: sticky; bottom: 0;
  display: flex; gap: 10px;
  padding: 12px 16px calc(var(--safe-b) + 14px);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
}
.quiz-foot .btn { margin: 0; flex: 1; }
.quiz-foot .btn-ghost { flex: 0 0 auto; min-width: 120px; }

/* ---------- Resultat ---------- */
.score-ring-wrap { display: grid; place-items: center; padding: 18px; }
.score-ring {
  width: 190px; height: 190px;
  border-radius: 50%;
  display: grid; place-content: center; text-align: center;
  background:
    radial-gradient(closest-side, var(--bg) 79%, transparent 80% 100%),
    conic-gradient(var(--accent) var(--pct, 0%), var(--bg-elev-2) 0);
}
.score-pct { font-size: 2.6rem; font-weight: 800; line-height: 1; }
.score-frac { color: var(--ink-dim); font-size: 0.95rem; margin-top: 6px; }
.results-line { text-align: center; color: var(--ink-dim); margin-top: -6px; }
.results-line:empty { display: none; }

/* ---------- Breakdown / staplar ---------- */
.breakdown { display: grid; gap: 12px; }
.bd-row { display: grid; gap: 6px; }
.bd-top { display: flex; justify-content: space-between; font-size: 0.92rem; }
.bd-name { font-weight: 700; }
.bd-val { color: var(--ink-dim); font-variant-numeric: tabular-nums; }
.bd-track { height: 9px; border-radius: 999px; background: var(--bg-elev-2); overflow: hidden; }
.bd-fill { height: 100%; border-radius: 999px; background: var(--accent); width: 0; transition: width .4s ease; }

/* ---------- Statistik ---------- */
.stat-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 4px; }
.stat-tile {
  background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: 14px; padding: 14px 8px; text-align: center;
}
.stat-num { display: block; font-size: 1.7rem; font-weight: 800; line-height: 1; }
.stat-cap { display: block; color: var(--ink-dim); font-size: 0.8rem; margin-top: 5px; }
.history-list { list-style: none; display: grid; gap: 8px; }
.history-list li {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 11px;
  background: var(--bg-elev-2); font-size: 0.92rem;
}
.history-list .h-when { color: var(--ink-dim); }
.history-list .h-score { font-weight: 800; }
.history-empty { color: var(--ink-dim); font-size: 0.92rem; }

/* ---------- Om ---------- */
.about-body { max-width: 100%; }
.about-body h1 { font-size: 1.5rem; margin-bottom: 10px; }
.about-body h2 { font-size: 1rem; margin: 18px 0 6px; }
.about-body p { margin-bottom: 10px; }
.about-body ul { margin: 0 0 10px 20px; }
.about-body li { margin-bottom: 6px; }
.muted { color: var(--ink-dim); font-size: 0.88rem; }

/* ---------- Diverse ---------- */
@media (min-width: 480px) {
  .options.svg-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}