/* ==========================================================================
 * pages/placeholder.css — 占位槽界面（小剧场 #/theater · 更多内容 #/more）
 * 作用域前缀：.page-slot（design.md §5.4），颜色全部走深浅色主题变量
 * 视觉：与全站一致的标题左竖线 + 毛玻璃槽位卡 + 虚线内容格
 * ========================================================================== */

.page-slot {
  max-width: 860px;
  padding: 64px 48px;
}

.slot-head__title {
  margin: 0 0 10px;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--ink);
  border-left: 4px solid var(--accent);
  padding-left: 20px;
}
.slot-head__sub {
  margin: 0 0 48px;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--muted);
}

/* 毛玻璃槽位卡 */
.slot-card {
  padding: 32px 36px 36px;
  background: var(--glass-bg, var(--panel));
  border: 1px solid var(--glass-brd, var(--line));
  border-radius: var(--radius-lg, 22px);
  box-shadow: inset 0 1px 0 var(--glass-hi, transparent), var(--glass-shadow);
  -webkit-backdrop-filter: blur(var(--glass-blur, 16px)) saturate(1.4);
  backdrop-filter: blur(var(--glass-blur, 16px)) saturate(1.4);
}
.slot-card__hint {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--accent-cyan);
}
.slot-card__desc {
  margin: 0 0 26px;
  font-size: 14px;
  line-height: 2;
  color: var(--muted);
}

/* 虚线内容格（占位槽视觉：等待填入内容） */
.slot-card__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.slot-card__cell {
  aspect-ratio: 4 / 3;
  border: 1px dashed var(--line);
  border-radius: var(--radius-md, 14px);
  background:
    repeating-linear-gradient(45deg, transparent 0 10px, rgba(140, 170, 255, .04) 10px 11px);
}

/* 入场淡入上移 */
@media (prefers-reduced-motion: no-preference) {
  .page-slot .slot-head,
  .page-slot .slot-card { animation: slot-in .5s cubic-bezier(.22, 1, .36, 1) both; }
  .page-slot .slot-card { animation-delay: .1s; }
  @keyframes slot-in {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
  }
}

/* ---------- 移动端适配（≤820px） ---------- */
@media (max-width: 820px) {
  .page-slot { padding: 32px 20px; }
  .slot-head__title { font-size: 26px; }
  .slot-head__sub { margin-bottom: 32px; letter-spacing: .14em; }
  .slot-card { padding: 22px 20px 24px; }
  .slot-card__grid { grid-template-columns: 1fr; gap: 12px; }
  .slot-card__cell { aspect-ratio: 16 / 7; }
}