:root {
  --bg: #16161a;
  --surface: #222229;
  --border: #2e2e38;
  --accent: #f0a050;
  --accent2: #e07090;
  --danger: #f87171;
  --text: #e8e6e3;
  --text-dim: #8b8b97;
  --mono: 'JetBrains Mono', monospace;
  --display: 'Inter', system-ui, sans-serif;
  --body: 'Inter', system-ui, sans-serif;
}

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

body {
  min-height: 100vh;
  font-family: var(--body);
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

.back-link {
  position: fixed;
  top: 20px;
  left: 24px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.back-link:hover { color: var(--accent); }

.quiz-shell {
  max-width: 860px;
  margin: 0 auto;
  padding: 96px 24px 48px;
  position: relative;
  z-index: 1;
}

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--accent);
  text-transform: uppercase;
}

.title {
  font-family: var(--display);
  font-size: clamp(62px, 10vw, 108px);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: 0.03em;
  margin-top: 10px;
}

.title span {
  display: block;
  color: var(--accent);
}

.subtitle {
  margin-top: 16px;
  color: var(--text-dim);
}

.panel {
  margin-top: 30px;
  background: rgba(34, 34, 41, 0.82);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px;
}
.setup-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}
.control {
  display: grid;
  gap: 8px;
}
.control span {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.control select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  background-color: #1a1a20;
  color: var(--text);
  padding: 10px 38px 10px 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  transition: border-color .18s ease, box-shadow .18s ease, color .18s ease;
  background-image:
    linear-gradient(45deg, transparent 50%, rgba(224,112,144,0.95) 50%),
    linear-gradient(135deg, rgba(224,112,144,0.95) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) calc(50% - 1px),
    calc(100% - 12px) calc(50% - 1px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}
.control select:hover {
  border-color: rgba(240,160,80,0.4);
  color: #fff;
}
.control select:focus {
  outline: none;
  border-color: rgba(224,112,144,0.55);
  box-shadow: 0 0 0 1px rgba(224,112,144,0.3), 0 0 20px rgba(224,112,144,0.08);
}
.meta-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.timer {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent2);
}
.timer.warn { color: var(--danger); }
.progress-track {
  height: 8px;
  border-radius: 999px;
  background: #1a1a20;
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: 18px;
}
.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 0.25s ease;
}

.question {
  font-size: 25px;
  line-height: 1.35;
  color: #fff;
}

.answers {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.answer-btn {
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #1a1a20;
  color: var(--text);
  font-size: 17px;
  padding: 14px;
  cursor: pointer;
  transition: border-color .18s ease, color .18s ease, transform .18s ease;
}

.answer-btn:hover:not(:disabled) {
  border-color: rgba(240,160,80,0.45);
  color: #fff;
  transform: translateY(-1px);
}

.answer-btn:disabled { cursor: not-allowed; }
.answer-btn.correct { border-color: rgba(110,200,122,0.8); color: #6ec87a; }
.answer-btn.wrong { border-color: rgba(248,113,113,0.8); color: var(--danger); }

.result {
  margin-top: 16px;
  min-height: 28px;
  font-size: 19px;
  font-weight: 600;
}

.result.success { color: #6ec87a; }
.result.error { color: var(--danger); }

.actions {
  margin-top: 22px;
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.score {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-right: auto;
}

.btn {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  background: #1a1a20;
  cursor: pointer;
}

.btn-primary:hover { border-color: rgba(240,160,80,0.45); color: var(--accent); }
.btn-secondary:hover { border-color: rgba(224,112,144,0.45); color: var(--accent2); }

.hidden { display: none; }

@media (max-width: 780px) {
  .setup-grid { grid-template-columns: 1fr; }
}