/* ==========================================================================
   一起听 · 房间页
   深色 + 专辑封面弥散背景 + 玻璃卡片。移动端优先，宽屏居中不无限拉伸。
   ========================================================================== */

:root {
  color-scheme: dark;

  --bg: #0a0c10;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-hi: rgba(255, 255, 255, 0.075);
  --line: rgba(255, 255, 255, 0.085);
  --line-hi: rgba(255, 255, 255, 0.14);

  --text: #f1f4f9;
  --muted: #97a1b1;
  --faint: #6a7382;

  --accent: #4ade80;
  --accent-dim: #1c7a45;
  --accent-soft: rgba(74, 222, 128, 0.13);
  --danger: #f87171;

  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 9px;

  --pad: 22px;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.42);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

/* .card / .icon-btn 这些显式设了 display，会盖掉浏览器默认的 [hidden]{display:none} */
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── 背景：封面弥散 + 压暗 ────────────────────────────────────────────────── */

.bg {
  position: fixed;
  inset: -25%;
  z-index: 0;
  background-position: center;
  background-size: cover;
  filter: blur(76px) saturate(1.7);
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 0.9s var(--ease);
  pointer-events: none;
}
.bg.has-art { opacity: 0.58; }

.bg-veil {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(130% 90% at 50% -10%, rgba(10, 12, 16, 0.45) 0%, rgba(10, 12, 16, 0.86) 52%, var(--bg) 100%);
}

/* ── 骨架 ─────────────────────────────────────────────────────────────────── */

.wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 620px;
  margin: 0 auto;
  padding: 26px 16px 54px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--pad);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

/* ── 顶栏 ─────────────────────────────────────────────────────────────────── */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 4px;
  min-height: 32px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 9px;
  min-width: 0;
}
.brand .mark {
  font-size: 15px;
  color: var(--accent);
  line-height: 1;
  transform: translateY(1px);
}
.brand .room {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand .label { color: var(--faint); font-size: 13px; font-weight: 400; }

.topbar-actions { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }

.status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
}
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--faint);
  transition: background 0.3s, box-shadow 0.3s;
}
.dot.on { background: var(--accent); box-shadow: 0 0 9px var(--accent-dim); }
.dot.off { background: var(--danger); }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  transition: background 0.18s, color 0.18s, border-color 0.18s;
}
.icon-btn:hover { background: var(--surface-hi); color: var(--text); border-color: var(--line-hi); }
.icon-btn:active { transform: scale(0.94); }
.icon-btn.done { color: var(--accent); border-color: var(--accent-dim); }

/* ── 正在播放 ─────────────────────────────────────────────────────────────── */

.now { display: flex; flex-direction: column; gap: 20px; }

.track { display: flex; gap: 20px; align-items: center; }

.cover {
  position: relative;
  width: 132px; height: 132px; flex: 0 0 132px;
  border-radius: var(--radius-md);
  background: var(--surface-hi) center/cover no-repeat;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
  overflow: hidden;
  transition: box-shadow 0.4s var(--ease);
}
.cover::after {
  content: "";
  position: absolute; inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: inherit;
  pointer-events: none;
}
.cover.empty {
  display: grid;
  place-items: center;
  color: var(--faint);
  font-size: 30px;
}

.meta { min-width: 0; flex: 1; }
.title {
  margin: 0 0 7px;
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -0.012em;
  line-height: 1.25;
  overflow-wrap: anywhere;
}
.artists {
  margin: 0 0 5px;
  font-size: 15px;
  color: var(--muted);
  overflow-wrap: anywhere;
}
.album {
  margin: 0;
  font-size: 13px;
  color: var(--faint);
  overflow-wrap: anywhere;
}

/* ── 进度 ─────────────────────────────────────────────────────────────────── */

.progress { display: flex; flex-direction: column; gap: 9px; }

.bar {
  position: relative;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.09);
  overflow: hidden;
}
.fill {
  position: absolute; inset: 0 auto 0 0;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  transition: width 0.5s linear;
}
.paused .fill { background: linear-gradient(90deg, #4b5563, #9ca3af); }

.times {
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* ── 标签行 ───────────────────────────────────────────────────────────────── */

.tags { display: flex; flex-wrap: wrap; gap: 8px; }

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 12.5px;
  background: var(--surface-hi);
  border: 1px solid var(--line);
  color: var(--muted);
  white-space: nowrap;
}
.tag.accent { color: var(--accent); border-color: var(--accent-dim); background: var(--accent-soft); }
.tag.plain { background: transparent; }
/* 播放中：底色透明，让里面的跳动柱看得清 */
.tag.live { background: transparent; border-color: var(--accent-dim); color: var(--accent); }

/* 播放中时的小动效：三根跳动的柱子 */
.eq { display: inline-flex; align-items: flex-end; gap: 2.5px; height: 12px; }
.eq i {
  display: block; width: 2.5px; border-radius: 2px;
  background: currentColor; height: 40%;
  animation: eq 1.05s ease-in-out infinite;
}
.eq i:nth-child(2) { animation-delay: 0.2s; }
.eq i:nth-child(3) { animation-delay: 0.4s; }
@keyframes eq {
  0%, 100% { height: 25%; }
  50% { height: 100%; }
}

/* ── 空状态 ───────────────────────────────────────────────────────────────── */

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 34px 10px;
  text-align: center;
  color: var(--faint);
}
.empty .glyph { font-size: 34px; opacity: 0.5; }
.empty .hint { font-size: 13px; }

/* ── 成员 ─────────────────────────────────────────────────────────────────── */

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}
.section-head h2 {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}
.section-head .count { font-size: 12.5px; color: var(--faint); font-variant-numeric: tabular-nums; }

.members { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }

.member {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  transition: background 0.18s;
}
.member:hover { background: var(--surface); }

.avatar {
  width: 32px; height: 32px; flex: 0 0 32px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 13px; font-weight: 600;
  color: #0a0c10;
  user-select: none;
}
.member .name {
  flex: 1;
  min-width: 0;
  font-size: 14.5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.badges { display: flex; gap: 6px; flex: 0 0 auto; }
.badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-hi);
  color: var(--muted);
  white-space: nowrap;
}
.badge.host { color: var(--accent); border-color: var(--accent-dim); background: var(--accent-soft); }

/* ── 根路径的房间列表 ─────────────────────────────────────────────────────── */

.rooms { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }

.room-row { display: block; }

.room-link {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: inherit;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.18s, border-color 0.18s;
}
.room-link:hover { background: var(--surface-hi); border-color: var(--line); }
.room-link:hover .arrow { opacity: 1; transform: translateX(2px); }

.room-art {
  width: 44px; height: 44px; flex: 0 0 44px;
  border-radius: 10px;
  background: var(--surface-hi) center/cover no-repeat;
  display: grid;
  place-items: center;
  color: var(--faint);
  font-size: 18px;
}

.room-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.room-title { font-size: 15px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.room-sub {
  font-size: 12.5px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.room-sub.idle { color: var(--faint); }

.arrow { color: var(--faint); opacity: 0.45; transition: opacity 0.18s, transform 0.18s; }

/* ── 页脚 ─────────────────────────────────────────────────────────────────── */

footer {
  text-align: center;
  font-size: 12px;
  color: var(--faint);
  line-height: 1.7;
}
footer a { color: var(--muted); text-decoration: none; border-bottom: 1px solid var(--line); }
footer a:hover { color: var(--text); }

/* ── 密钥闸门 ─────────────────────────────────────────────────────────────── */

.gate {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: none;
  place-items: center;
  padding: 20px;
  background: rgba(6, 8, 11, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.gate.show { display: grid; }

.gate .card {
  width: min(370px, 100%);
  box-shadow: var(--shadow);
  background: rgba(20, 23, 29, 0.94);
}
.gate h3 { margin: 0 0 6px; font-size: 16.5px; }
.gate p { margin: 0 0 18px; font-size: 13px; color: var(--muted); }

.gate input {
  width: 100%;
  padding: 11px 13px;
  font: inherit;
  color: var(--text);
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.18s;
}
.gate input:focus { border-color: var(--accent-dim); }

.gate button {
  width: 100%;
  margin-top: 12px;
  padding: 11px;
  font: inherit;
  font-weight: 600;
  color: #06210f;
  background: var(--accent);
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  transition: filter 0.18s;
}
.gate button:hover { filter: brightness(1.07); }
.gate button:active { transform: scale(0.99); }
.gate .error { min-height: 17px; margin-top: 10px; font-size: 12.5px; color: var(--danger); }

/* ── 提示条 ───────────────────────────────────────────────────────────────── */

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 30;
  transform: translate(-50%, 14px);
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text);
  background: rgba(28, 32, 39, 0.95);
  border: 1px solid var(--line-hi);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ── 窄屏 ─────────────────────────────────────────────────────────────────── */

@media (max-width: 520px) {
  :root { --pad: 18px; }
  .wrap { padding: 20px 12px 46px; gap: 13px; }
  .track { gap: 15px; }
  .cover { width: 96px; height: 96px; flex-basis: 96px; }
  .title { font-size: 20px; }
  .artists { font-size: 14px; }
  .brand .label { display: none; }
}

/* ── 无障碍：尊重减少动效 ─────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
  .eq i { height: 65%; }
  .cover, .fill, .bg { transition: none; }
}