/* =========================================================
   神绮站 · 科普小课堂（视频页）
   布局：视频上下排列（单列），播放器尽量大
   交互：封面 + 大播放键 → 点击在卡片内播放（不跳转 B 站）
   ========================================================= */

.vid-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  max-width: 1120px;
  margin: 30px auto 0;
}

.vid {
  border: 1px solid var(--glass-bd, rgba(242, 190, 212, .18));
  border-radius: 18px;
  background: var(--glass, rgba(42, 18, 34, .55));
  overflow: hidden;
}

.vid__head { padding: 17px 20px 12px; }
.vid__title {
  margin: 0;
  font-family: var(--font-serif, serif);
  font-size: clamp(1.05rem, 2.4vw, 1.32rem);
  line-height: 1.6;
  color: var(--snow, #fdf4f7);
  word-break: break-word;
}
.vid__meta {
  margin: 6px 0 0;
  font-size: .84rem;
  line-height: 1.7;
  color: var(--ink-faint, #9d7f8f);
}

/* ---------- 播放区 ---------- */
.vid__stage {
  position: relative;
  width: 100%;
  height: 560px;                 /* 老浏览器兜底 */
  background: #000;
}
@supports (aspect-ratio: 16 / 9) {
  .vid__stage {
    height: auto;
    aspect-ratio: 16 / 9;
  }
}

/* 封面（有图就显示，没图就是渐变底） */
.vid__poster {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  cursor: pointer;
  background:
    radial-gradient(120% 120% at 18% 0%, rgba(226, 96, 138, .34), transparent 62%),
    radial-gradient(120% 120% at 92% 100%, rgba(208, 106, 145, .34), transparent 64%),
    linear-gradient(150deg, #2a1020, #14060e);
  color: #fff;
}
.vid__poster:focus-visible { outline: 2px solid var(--ice, #e67ba8); outline-offset: -3px; }
.vid__cover {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.vid__poster::after {           /* 压暗一点，让播放键更清楚 */
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 2, 5, .12), rgba(10, 2, 5, .42));
  pointer-events: none;
}

/* 大播放键 */
.vid__play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px 12px 16px;
  border-radius: 999px;
  background: rgba(12, 3, 9, .62);
  border: 1.5px solid rgba(255, 222, 236, .55);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .5);
  transition: transform .2s ease, background .2s ease;
}
.vid__play i {
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 13px 0 13px 21px;
  border-color: transparent transparent transparent #fff;
  filter: drop-shadow(0 1px 4px rgba(0, 0, 0, .6));
}
.vid__play b {
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: #fff;
  text-shadow: 0 1px 6px rgba(0, 0, 0, .7);
}
.vid__poster:hover .vid__play {
  transform: translate(-50%, -50%) scale(1.06);
  background: rgba(226, 96, 138, .5);
}

/* 播放器（点击后才创建） */
.vid__frame {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #000;
}
.vid.is-playing .vid__poster { display: none; }

/* ---------- 底部 ---------- */
.vid__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 20px 16px;
}
.vid__note {
  margin: 0;
  font-size: .82rem;
  color: var(--ink-faint, #9d7f8f);
}
.vid__link { font-size: .84rem; }

/* ---------- 空状态 / 载入 / 出错 ---------- */
.vid-empty,
.vid-loading,
.vid-error {
  margin: 0 auto;
  padding: 28px 24px;
  border-radius: 16px;
  border: 1px dashed rgba(242, 190, 212, .24);
  background: rgba(24, 8, 16, .45);
  color: var(--ink-dim, #cbb0bd);
  font-size: .92rem;
  line-height: 2;
  text-align: center;
  max-width: 860px;
}
.vid-error {
  border-style: solid;
  border-color: rgba(255, 170, 120, .5);
  background: rgba(48, 18, 8, .6);
  color: #ffe0c8;
  text-align: left;
}
.vid-empty h3 {
  margin: 0 0 10px;
  font-family: var(--font-serif, serif);
  font-size: 1.2rem;
  color: var(--snow, #fdf4f7);
}
.vid-empty__code {
  display: block;
  margin: 14px auto 0;
  max-width: 520px;
  padding: 13px 15px;
  border-radius: 12px;
  text-align: left;
  overflow-x: auto;
  font-size: .82rem;
  line-height: 1.9;
  color: #ffe3ef;
  background: rgba(12, 3, 9, .72);
  border: 1px solid rgba(242, 190, 212, .2);
}
.vid-empty code,
.vid-error code {
  padding: .1em .45em;
  border-radius: 5px;
  background: rgba(226, 96, 138, .16);
  border: 1px solid rgba(242, 190, 212, .24);
  color: var(--ice-soft, #f2c2cf);
}

@media (max-width: 900px) {
  .vid-grid { gap: 22px; margin-top: 22px; }
  .vid__stage { height: 420px; }
}
@media (max-width: 640px) {
  .vid__stage { height: 260px; }
  .vid__head { padding: 14px 15px 10px; }
  .vid__foot { padding: 11px 15px 14px; }
  .vid__play { padding: 10px 16px 10px 13px; gap: 9px; }
  .vid__play i { border-width: 11px 0 11px 17px; }
  .vid__play b { font-size: .86rem; }
}