/* AI 游戏投票 — 午夜蓝 + 奖杯金 + 红毯红 */

.activity-page--ai_game {
  --activity-accent: #d4af37;
  --activity-accent-mid: #f0c75a;
  --activity-accent-light: #fff4d6;
  --activity-surface: #0b1220;
  --activity-accent-red: #c41e3a;
  --activity-accent-red-mid: #e63946;
  --oscar-gold: #d4af37;
  --oscar-gold-mid: #f0c75a;
  --oscar-gold-light: #fff4d6;
  --oscar-dark: #050810;
  --oscar-dark-surface: #0b1220;
  --oscar-dark-elevated: #121c2e;
}

body:has(.activity-page--ai_game) {
  background: linear-gradient(180deg, #02040a 0%, #0b1220 42%, #10182a 100%);
}

.activity-page--ai_game .oscar-info-bar,
.activity-page--ai_game .activity-select-card {
  background: linear-gradient(145deg, #121c2e 0%, #0b1220 55%, #050810 100%);
  border-color: rgba(212, 175, 55, 0.42);
  box-shadow: 0 0 28px rgba(212, 175, 55, 0.12);
}

.activity-page--ai_game .oscar-section__title,
.activity-page--ai_game .activity-select-card__title {
  color: var(--oscar-gold);
  text-shadow: 0 0 14px rgba(212, 175, 55, 0.35);
  letter-spacing: 0.05em;
}

.activity-page--ai_game .oscar-info-bar__desc,
.activity-page--ai_game .activity-select-card__desc {
  color: rgba(255, 244, 214, 0.88);
}

.activity-page--ai_game .oscar-countdown__value {
  color: var(--oscar-gold-mid);
}

.activity-page--ai_game .oscar-vote-budget__item {
  color: rgba(255, 244, 214, 0.9);
}

.activity-page--ai_game .oscar-vote-budget__item strong {
  color: var(--oscar-gold-mid);
}

/* 投票卡片：覆盖 assignment.css 白底 */
.activity-page--ai_game .activity-works-grid .work-card {
  background: var(--oscar-dark-surface);
  border: 1px solid rgba(212, 175, 55, 0.28);
  box-shadow:
    inset 0 0 0 1px rgba(212, 175, 55, 0.08),
    0 8px 24px rgba(0, 0, 0, 0.35);
}

.activity-page--ai_game .activity-works-grid .work-card:hover {
  border-color: rgba(212, 175, 55, 0.5);
  box-shadow:
    inset 0 0 0 1px rgba(212, 175, 55, 0.14),
    0 10px 28px rgba(0, 0, 0, 0.42);
}

.activity-page--ai_game .activity-works-grid .work-preview {
  background: #050810;
}

.activity-page--ai_game .activity-works-grid .work-info {
  background: var(--oscar-dark-elevated);
  border-top: 1px solid rgba(212, 175, 55, 0.16);
}

.activity-page--ai_game .activity-work-card .work-nickname {
  color: var(--oscar-gold-light);
}

.activity-page--ai_game .oscar-vote-chip {
  background: rgba(18, 28, 46, 0.92);
  border-color: rgba(212, 175, 55, 0.24);
  color: var(--oscar-gold-light);
}

.activity-page--ai_game .oscar-vote-chip__count {
  color: var(--oscar-gold-mid);
}

.activity-page--ai_game .oscar-vote-chip:hover:not(:disabled):not(.oscar-vote-chip--readonly) {
  border-color: rgba(196, 30, 58, 0.65);
  background: rgba(196, 30, 58, 0.12);
}

.activity-page--ai_game .oscar-vote-chip--voted {
  border-color: var(--oscar-gold);
  background: rgba(212, 175, 55, 0.14);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.28);
}

.activity-page--ai_game .oscar-vote-chip--locked {
  opacity: 0.72;
}

.activity-page--ai_game .activity-award-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin: 12px 0 4px;
}

.activity-page--ai_game .activity-award-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(212, 175, 55, 0.28);
  color: rgba(255, 244, 214, 0.92);
  font-size: 13px;
}

/* 卡片投票 chip 顺序：最佳 UI → 最佳玩法 → 金摇杆 */
.activity-page--ai_game .activity-vote-bar {
  display: flex;
}

.activity-page--ai_game .activity-vote-chip[data-category="best_ui"] {
  order: 1;
}

.activity-page--ai_game .activity-vote-chip[data-category="best_gameplay"] {
  order: 2;
}

.activity-page--ai_game .activity-vote-chip[data-category="golden_joystick"] {
  order: 3;
}

.activity-page--ai_game .btn-view {
  background: linear-gradient(180deg, #c41e3a 0%, #8f1428 100%);
  color: #fff4d6;
  border: 1px solid rgba(255, 244, 214, 0.35);
}

.activity-page--ai_game .btn-view:hover {
  background: linear-gradient(180deg, #e63946 0%, #a01830 100%);
  color: #fff;
}

.activity-page--ai_game .oscar-award-section {
  background: linear-gradient(145deg, #121c2e 0%, #0b1220 100%);
  border-color: rgba(212, 175, 55, 0.28);
}

.activity-page--ai_game .oscar-award-section__title {
  color: var(--oscar-gold-mid);
}

.activity-page--ai_game .oscar-award-label {
  background: linear-gradient(180deg, #f0c75a 0%, #d4af37 100%);
  color: #1a1208;
}

.activity-page--ai_game .activity-show-header {
  background: var(--oscar-dark-surface);
  border-color: rgba(212, 175, 55, 0.35);
}

.activity-page--ai_game .activity-anon-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(196, 30, 58, 0.18);
  border: 1px solid rgba(196, 30, 58, 0.45);
  color: #ffd6de;
  font-size: 13px;
}

/* TA / 班次选择页 */
.activity-select-options--stacked {
  flex-direction: column;
  align-items: stretch;
}

.activity-select-batch {
  padding: 10px 0;
  border-top: 1px solid rgba(148, 163, 184, 0.35);
}

.activity-select-batch:first-child {
  border-top: none;
  padding-top: 0;
}

.activity-select-batch__name {
  font-size: 14px;
  font-weight: 600;
  color: #fff4d6;
  margin-bottom: 8px;
}

.activity-select-option small {
  display: block;
  font-size: 11px;
  color: #94a3b8;
  margin-top: 2px;
}

.activity-select-page {
  padding-bottom: 48px;
}

.activity-select-card {
  margin: 24px auto 0;
  max-width: 720px;
  padding: 28px 24px 32px;
  border-radius: 18px;
  border: 1px solid rgba(212, 175, 55, 0.35);
  color: #fff4d6;
}

.activity-select-card__title {
  margin: 0 0 8px;
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
}

.activity-select-card__desc {
  margin: 0 0 24px;
  line-height: 1.65;
}

.activity-select-form {
  display: grid;
  gap: 18px;
}

.activity-select-field label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--oscar-gold-light);
}

.activity-select-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.activity-select-option {
  position: relative;
}

.activity-select-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.activity-select-option span {
  display: block;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid rgba(212, 175, 55, 0.28);
  background: rgba(255, 255, 255, 0.04);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.activity-select-option input:checked + span {
  border-color: rgba(196, 30, 58, 0.75);
  background: rgba(196, 30, 58, 0.18);
  box-shadow: 0 0 0 1px rgba(196, 30, 58, 0.25);
}

.activity-select-option span:hover {
  border-color: rgba(212, 175, 55, 0.55);
}

.activity-select-submit {
  margin-top: 8px;
  width: 100%;
  padding: 14px 18px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(180deg, #c41e3a 0%, #8f1428 100%);
  color: #fff4d6;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

.activity-select-submit:hover {
  background: linear-gradient(180deg, #e63946 0%, #a01830 100%);
}

.activity-select-error {
  margin: 0 0 16px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(196, 30, 58, 0.16);
  border: 1px solid rgba(196, 30, 58, 0.45);
  color: #ffd6de;
}