/* ============================================================
   Führerschein 2026 – Design nach aktuellem Standard
   Moderne, ruhige Farbpalette, Light/Dark-Mode, 2026-Trends:
   weiche Radien, sanfte Schatten, Gradient-Akzente, Blur
   ============================================================ */

:root {
  --bg: #f3f5fb;
  --card: #ffffff;
  --text: #0f1729;
  --muted: #5b6478;
  --primary: #2f5cff;
  --primary-2: #7a3cff;
  --accent: #ffb703;
  --ok: #16a34a;
  --err: #e11d48;
  --border: #e3e8f2;
  --shadow: 0 10px 30px rgba(15, 23, 41, 0.08);
  --radius: 20px;
}

[data-theme="dark"] {
  --bg: #0b1020;
  --card: #141b30;
  --text: #eef1f8;
  --muted: #93a0b8;
  --primary: #4d7cff;
  --primary-2: #8b5cf6;
  --accent: #ffc233;
  --ok: #22c55e;
  --err: #fb4d6d;
  --border: #232c47;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
}

/* ---------- Header ---------- */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.logo {
  font-size: 1.15rem;
  font-weight: 600;
  display: flex;
  gap: 10px;
  align-items: center;
}
.logo b {
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
#themeToggle {
  border: none;
  background: var(--card);
  border-radius: 999px;
  width: 42px;
  height: 42px;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.15s;
}
#themeToggle:active { transform: scale(0.92); }

/* ---------- Layout ---------- */
main { max-width: 760px; margin: 0 auto; padding: 28px 16px 64px; }
h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 700; letter-spacing: -0.02em; }
.subtitle { color: var(--muted); margin: 10px 0 26px; line-height: 1.55; }
.hidden { display: none !important; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.8rem;
  margin: 18px 0 8px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}
label:first-child { margin-top: 0; }

/* ---------- Segmented Controls ---------- */
.seg { display: flex; gap: 8px; flex-wrap: wrap; }
.seg button {
  flex: 1;
  min-width: 120px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.seg button:hover { border-color: var(--primary); }
.seg button.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--primary) 35%, transparent);
}

/* ---------- Buttons ---------- */
.btn {
  border: none;
  border-radius: 14px;
  padding: 14px 22px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s;
}
.btn:active { transform: scale(0.98); }
.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary) 35%, transparent);
}
.btn.ghost {
  background: transparent;
  color: var(--muted);
  border: 1.5px solid var(--border);
}
.btn.big { width: 100%; margin-top: 24px; padding: 16px; font-size: 1.05rem; }
.hint { margin-top: 14px; font-size: 0.85rem; color: var(--muted); line-height: 1.5; }

/* ---------- Quiz ---------- */
.quiz-top { margin-bottom: 16px; }
.progress {
  height: 10px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}
#progressBar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  border-radius: 999px;
  transition: width 0.3s;
}
.quiz-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--muted);
  gap: 8px;
}
.badge {
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.85rem;
  white-space: nowrap;
}
.badge.points {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  color: #8a5b00;
}
[data-theme="dark"] .badge.points { color: var(--accent); }
.badge.errors {
  background: color-mix(in srgb, var(--err) 14%, transparent);
  color: var(--err);
}
.badge.bad { background: var(--err); color: #fff; }

.quiz-card { text-align: center; }
.sign-box {
  width: 140px;
  height: 140px;
  margin: 8px auto 18px;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.18));
}
.sign-box svg { width: 100%; height: 100%; }
.quiz-card h2 { font-size: 1.25rem; margin-bottom: 18px; letter-spacing: -0.01em; line-height: 1.45; }

.answer {
  display: block;
  width: 100%;
  text-align: left;
  margin-bottom: 10px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 0.98rem;
  line-height: 1.4;
  cursor: pointer;
  transition: all 0.15s;
}
.answer:hover:not(:disabled) {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 6%, transparent);
}
.answer:disabled { cursor: default; }
.answer.correct {
  border-color: var(--ok);
  background: color-mix(in srgb, var(--ok) 12%, transparent);
  font-weight: 600;
}
.answer.wrong {
  border-color: var(--err);
  background: color-mix(in srgb, var(--err) 12%, transparent);
}

.feedback {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 14px;
  font-size: 0.92rem;
  text-align: left;
  line-height: 1.55;
}
.feedback.ok { background: color-mix(in srgb, var(--ok) 12%, transparent); }
.feedback.err { background: color-mix(in srgb, var(--err) 12%, transparent); }

.quiz-actions { display: flex; justify-content: space-between; gap: 12px; margin-top: 20px; }
.quiz-actions.center { justify-content: center; }

/* ---------- Ergebnis ---------- */
.result-card { text-align: center; }
.result-icon { font-size: 4rem; margin-bottom: 8px; }
.result-stats { display: flex; justify-content: center; gap: 36px; margin: 24px 0; }
.stat { display: flex; flex-direction: column; }
.stat b { font-size: 1.7rem; letter-spacing: -0.02em; }
.stat span { color: var(--muted); font-size: 0.85rem; }

#wrongList h3 { text-align: left; margin: 20px 0 4px; font-size: 1rem; }
.wrong-item {
  display: flex;
  gap: 14px;
  text-align: left;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-top: 10px;
}
.wrong-item p { font-size: 0.92rem; margin-bottom: 4px; line-height: 1.4; }
.wrong-item small { color: var(--ok); font-weight: 600; }
.mini-sign { width: 56px; height: 56px; flex-shrink: 0; }

/* ---------- Statistik ---------- */
.stats-card { display: flex; justify-content: space-around; text-align: center; }

/* ---------- Medien (Bilder & Videos) ---------- */
.media-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 4px auto 18px;
  max-width: 680px;
}
.media-box img {
  width: 100%;
  max-width: 600px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow);
}
.media-box video {
  width: 100%;
  max-width: 680px;
  border-radius: 14px;
  background: #000;
  box-shadow: var(--shadow);
}

/* ---------- Punktereihe ---------- */
.q-points {
  display: inline-block;
  margin-bottom: 16px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
}

/* ---------- Antwortkarten (Checkboxen) ---------- */
.answer {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  text-align: left;
  margin-bottom: 10px;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.4;
  cursor: pointer;
  transition: all 0.15s;
}
.answer input { position: absolute; opacity: 0; pointer-events: none; }
.answer .letter {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
  border: 1.5px solid var(--border);
  color: var(--muted);
  transition: all 0.15s;
}
.answer .txt { flex: 1; padding-top: 3px; }
.answer:hover:not(:has(input:disabled)) {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 6%, transparent);
}
.answer:has(input:checked) {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 10%, transparent);
}
.answer:has(input:checked) .letter {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border-color: transparent;
  color: #fff;
}
.answer:has(input:disabled) { cursor: default; }
.answer.correct {
  border-color: var(--ok);
  background: color-mix(in srgb, var(--ok) 12%, transparent);
}
.answer.correct .letter { background: var(--ok); border-color: transparent; color: #fff; }
.answer.wrong {
  border-color: var(--err);
  background: color-mix(in srgb, var(--err) 12%, transparent);
}
.answer.wrong .letter { background: var(--err); border-color: transparent; color: #fff; }
.answer.dim { opacity: 0.45; }

/* ---------- Zahlenfrage ---------- */
.num-box {
  display: flex;
  gap: 10px;
  margin-top: 4px;
}
.num-box input {
  flex: 1;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 600;
  outline: none;
  transition: border-color 0.15s;
}
.num-box input:focus { border-color: var(--primary); }
.num-box input.ok { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 10%, transparent); }
.num-box input.err { border-color: var(--err); background: color-mix(in srgb, var(--err) 10%, transparent); }

/* ---------- Checkbox-Zeile ---------- */
label.chk {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0 0;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
}
label.chk input { width: 18px; height: 18px; accent-color: var(--primary); }

/* ---------- Select ---------- */
select {
  width: 100%;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1.5px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
}
select:focus { border-color: var(--primary); }

/* ---------- Themen-Fortschritt ---------- */
.theme-row { margin-bottom: 14px; }
.theme-row:last-child { margin-bottom: 0; }
.theme-row-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 5px;
  font-size: 0.9rem;
}
.theme-row-top span { font-weight: 600; }
.theme-row-top small { color: var(--muted); }
.mini-progress {
  height: 7px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.mini-progress div {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  border-radius: 999px;
  transition: width 0.3s;
}

/* ---------- Lader ---------- */
.spinner {
  width: 40px;
  height: 40px;
  margin: 0 auto;
  border-radius: 50%;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.wrong-item .was { color: var(--err); display: block; margin-top: 3px; }

@media (max-width: 480px) {
  .seg button { min-width: 100%; }
  .result-stats { gap: 24px; }
}