/**
 * ARCANA 答题壳层 — 各测试仅覆写 :root 中的 --aq-* 变量，保留主题色。
 * 在 #screen-quiz 上添加 class="screen arcana-quiz"。
 */

:root {
  --aq-bg: #040610;
  --aq-text: #e8e0f0;
  --aq-text-muted: rgba(180, 150, 220, 0.65);
  --aq-text-dim: rgba(140, 110, 180, 0.45);
  --aq-surface: rgba(160, 130, 220, 0.08);
  --aq-surface-selected: rgba(160, 130, 220, 0.14);
  --aq-border: rgba(160, 130, 220, 0.22);
  --aq-border-strong: rgba(200, 170, 240, 0.5);
  --aq-progress-track: rgba(160, 130, 220, 0.1);
  --aq-progress-fill-start: #c4a8d8;
  --aq-progress-fill-end: #e8a8c0;
  --aq-accent-gradient: linear-gradient(135deg, #c4a8d8, #f0d0e8, #e8a8c0);
  --aq-on-accent: #040610;
  --aq-header-border: rgba(160, 130, 220, 0.12);
  --aq-radius-opt: 14px;
  --aq-radius-pill: 40px;
  --aq-safe-top: env(safe-area-inset-top);
  --aq-safe-bottom: env(safe-area-inset-bottom);
  --aq-font-display: 'Cinzel', serif;
  --aq-fs-q: 17px;
  --aq-fs-opt: 14px;
  --aq-fs-progress: 11px;
  --aq-max-width: 480px;
}

.arcana-quiz {
  flex-direction: column;
  min-height: 100%;
  min-height: 100dvh;
  background: var(--aq-bg);
  width: 100%;
  max-width: var(--aq-max-width);
  margin: 0 auto;
}

.arcana-quiz .quiz-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--aq-bg);
  padding: calc(12px + var(--aq-safe-top)) 20px 12px;
  border-bottom: 1px solid var(--aq-header-border);
}

.arcana-quiz .quiz-subtitle {
  font-family: var(--aq-font-display);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--aq-text-dim);
  text-transform: uppercase;
  margin-top: 10px;
  text-align: center;
}

.arcana-quiz .progress-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.arcana-quiz .progress-track {
  flex: 1;
  height: 4px;
  background: var(--aq-progress-track);
  border-radius: 4px;
  overflow: hidden;
}

.arcana-quiz .progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--aq-progress-fill-start), var(--aq-progress-fill-end));
  transition: width 0.4s ease;
}

.arcana-quiz .progress-text {
  font-size: var(--aq-fs-progress);
  color: var(--aq-text-dim);
  white-space: nowrap;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}

.arcana-quiz .quiz-body {
  flex: 1;
  padding: 20px 20px calc(24px + var(--aq-safe-bottom));
}

.arcana-quiz .q-num {
  font-size: 10px;
  color: var(--aq-text-dim);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 10px;
  font-family: var(--aq-font-display);
}

.arcana-quiz .q-text,
.arcana-quiz .question-text {
  font-size: var(--aq-fs-q);
  font-weight: 600;
  color: var(--aq-text);
  line-height: 1.65;
  margin-bottom: 22px;
}

.arcana-quiz .options,
.arcana-quiz .options-wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.arcana-quiz .opt,
.arcana-quiz .option-card,
.arcana-quiz .option-btn {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 14px;
  background: var(--aq-surface);
  border: 1px solid var(--aq-border);
  border-radius: var(--aq-radius-opt);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.1s;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  text-align: left;
  font-family: inherit;
  font-size: var(--aq-fs-opt);
  line-height: 1.6;
  color: var(--aq-text-muted);
  width: 100%;
}

.arcana-quiz button.opt,
.arcana-quiz button.option-btn {
  appearance: none;
}

.arcana-quiz .opt:active,
.arcana-quiz .option-card:active,
.arcana-quiz .option-btn:active {
  transform: scale(0.99);
}

.arcana-quiz .opt.selected,
.arcana-quiz .option-card.selected,
.arcana-quiz .option-btn.selected {
  background: var(--aq-surface-selected);
  border-color: var(--aq-border-strong);
  box-shadow: 0 4px 20px rgba(160, 130, 220, 0.12);
  color: var(--aq-text);
}

.arcana-quiz .opt-letter,
.arcana-quiz .opt-lbl,
.arcana-quiz .tag {
  font-size: 11px;
  font-weight: 800;
  color: var(--aq-text-dim);
  flex-shrink: 0;
  margin-top: 2px;
  letter-spacing: 0.05em;
  font-family: var(--aq-font-display);
}

.arcana-quiz .opt.selected .opt-letter,
.arcana-quiz .opt.selected .opt-lbl,
.arcana-quiz .option-card.selected .opt-lbl,
.arcana-quiz .opt.selected .tag {
  color: var(--aq-progress-fill-end);
}

.arcana-quiz .opt-text {
  flex: 1;
}

.arcana-quiz .quiz-nav {
  display: flex;
  gap: 10px;
  margin-top: 22px;
}

.arcana-quiz .btn-nav {
  flex: 1;
  padding: 13px 16px;
  border-radius: var(--aq-radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s, border-color 0.15s;
  -webkit-tap-highlight-color: transparent;
  font-family: inherit;
}

.arcana-quiz .btn-nav-prev {
  flex: 0 0 auto;
  min-width: 108px;
  background: transparent;
  color: var(--aq-text-muted);
  border: 1px solid var(--aq-border);
}

.arcana-quiz .btn-nav-prev:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.arcana-quiz .btn-nav-next {
  flex: 1;
  background: var(--aq-accent-gradient);
  color: var(--aq-on-accent);
  border: none;
}

.arcana-quiz .btn-nav-next:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* F1 浓度：下一题初始隐藏 */
.arcana-quiz .btn-nav-next.aq-next-hidden {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.arcana-quiz .btn-nav-next.aq-next-visible {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}