/* 深色玻璃质感。手机优先，桌面只是把内容加宽。 */

:root {
  color-scheme: dark;

  --bg: #0e1014;
  --bg-elevated: rgba(28, 32, 40, 0.72);
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8eaed;
  --text-dim: #9aa2ae;
  --accent: #4b8bf5;

  --radius: 14px;
  --radius-sm: 10px;
  --blur: 20px;

  --player-height: 128px;
}

* { box-sizing: border-box; }

/* ---------- 图标 ---------- */

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 20px;
  height: 20px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

html, body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--bg);
  /* 顶部一抹极淡的辉光，避免纯黑死板 */
  background-image: radial-gradient(120% 60% at 50% -10%, rgba(75, 139, 245, 0.10), transparent 70%);
  background-attachment: fixed;
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  /* --player-height 由 JS 实测写入，已经包含安全区，这里不要再加一次 */
  padding: 0 16px calc(var(--player-height) + 24px);
}

/* ---------- 顶部 BV 输入 ---------- */

/* 背景要铺满整屏：只在 720px 内容宽度内铺的话，两侧的辉光会被挡住，
   顶部会显出一块和页面其余部分颜色不同的矩形。 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 16px 0 12px;
  background: linear-gradient(var(--bg) 70%, transparent);
}

.topbar-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

.search {
  display: flex;
  gap: 8px;
}

.search input {
  flex: 1;
  min-width: 0;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  backdrop-filter: blur(var(--blur));
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.search input::placeholder { color: var(--text-dim); }

.search input:focus {
  border-color: var(--accent);
  background: rgba(28, 32, 40, 0.9);
}

.search button {
  padding: 12px 20px;
  border: 0;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: filter 0.18s ease;
}

.search button:hover { filter: brightness(1.1); }
.search button:disabled { opacity: 0.5; cursor: default; filter: none; }

.status {
  margin-top: 12px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  font-size: 13px;
  color: var(--text-dim);
}

.status.is-error {
  border-color: rgba(220, 90, 90, 0.4);
  color: #f0a0a0;
}

.retry {
  margin-left: 10px;
  padding: 3px 12px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  cursor: pointer;
}

/* ---------- 收藏夹 ---------- */

.favorites {
  margin-top: 4px;
}

.favorites-title {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.favorites-empty {
  margin: 0;
  padding: 28px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-dim);
}

.favorites-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.fav-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  overflow: hidden;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.fav-item.is-active {
  border-color: var(--accent);
  background: rgba(75, 139, 245, 0.1);
}

.fav-row {
  display: flex;
  align-items: center;
}

.fav-play {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.fav-cover {
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
}

.fav-meta { min-width: 0; }

.fav-toggle,
.fav-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
}

.fav-toggle:hover,
.fav-remove:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.fav-toggle .icon,
.fav-remove .icon {
  width: 18px;
  height: 18px;
}

.fav-toggle .icon { transition: transform 0.18s ease; }
.fav-toggle.is-open .icon { transform: rotate(180deg); }

/* 限高 + 内部滚动：200 P 也不会把页面撑开 */
.fav-parts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 4px;
  max-height: min(40vh, 300px);
  margin: 0;
  padding: 8px 10px 10px;
  border-top: 1px solid var(--border);
  list-style: none;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.fav-parts::-webkit-scrollbar {
  width: 6px;
}

.fav-parts::-webkit-scrollbar-track {
  background: transparent;
}

.fav-parts::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}

.fav-parts::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

.fav-part {
  width: 100%;
  padding: 7px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.4;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.fav-part:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.fav-part.is-current {
  color: var(--accent);
  background: rgba(75, 139, 245, 0.12);
}

/* ---------- 底部播放条 ---------- */

.player {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  display: grid;
  gap: 10px;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  background: rgba(14, 16, 20, 0.86);
  backdrop-filter: blur(24px);
}

/* 必须显式写这一条。上面的 display: grid 是作者样式，
   而 [hidden] { display: none } 来自浏览器默认样式表 —— 作者样式优先级更高，
   所以不加这条的话 hidden 属性完全失效，空播放条会一直盖在页面内容上。 */
.player[hidden] { display: none; }

.player-track {
  display: flex;
  gap: 12px;
  align-items: center;
  min-width: 0;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}

.player-cover,
.fav-cover {
  border-radius: 8px;
  object-fit: cover;
  background: rgba(255, 255, 255, 0.05);
}

.player-cover {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
}

.player-meta { flex: 1; min-width: 0; }

/* 播放条与收藏列表共用的单行文本样式 */
.player-title,
.player-author,
.fav-title,
.fav-author {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.player-title,
.fav-title { font-size: 14px; }

.player-author,
.fav-author { font-size: 12px; color: var(--text-dim); }

.player-controls {
  display: flex;
  gap: 4px;
  align-items: center;
  justify-content: center;
}

.ctl {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: color 0.16s ease, background 0.16s ease;
}

.ctl:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }

.ctl.is-on { color: var(--accent); }

/* 播放条上的收藏星标 */
.fav.is-on { color: #f5c451; }
.fav.is-on .icon { fill: currentColor; }
.fav:disabled { opacity: 0.35; cursor: default; }

.ctl:focus-visible,
.fav-play:focus-visible,
.fav-toggle:focus-visible,
.fav-part:focus-visible,
.fav-remove:focus-visible,
.retry:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.ctl-main {
  width: 46px;
  height: 46px;
  background: var(--accent);
  color: #fff;
}

/* 主按钮用实心图标，和描边控件区分开 */
.ctl-main .icon {
  width: 22px;
  height: 22px;
  fill: currentColor;
  stroke: none;
}

.ctl-main:hover { background: var(--accent); filter: brightness(1.1); }

.player-progress {
  display: flex;
  gap: 10px;
  align-items: center;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}

.time {
  flex: 0 0 auto;
  font-size: 11px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.seek {
  flex: 1;
  min-width: 0;
  height: 18px;
  margin: 0;
  background: transparent;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.seek::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.14);
}

.seek::-moz-range-track {
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.14);
}

.seek::-webkit-slider-thumb {
  width: 12px;
  height: 12px;
  margin-top: -4.5px;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  -webkit-appearance: none;
  appearance: none;
}

.seek::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- 撤销提示 ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--player-height) + 16px);
  z-index: 40;
  display: flex;
  gap: 14px;
  align-items: center;
  max-width: calc(100vw - 32px);
  padding: 9px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(28, 32, 40, 0.94);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  color: var(--text);
  font-size: 13px;
  white-space: nowrap;
  transform: translateX(-50%);
  animation: toast-in 0.18s ease-out;
}

.toast[hidden] { display: none; }

.toast button {
  padding: 2px 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.toast button:hover { filter: brightness(1.15); }

@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 6px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* ---------- 桌面微调 ---------- */

@media (min-width: 760px) {
  :root { --player-height: 108px; }

  .player {
    /* 桌面上把播放条收成居中的悬浮卡片 */
    left: 50%;
    right: auto;
    bottom: 16px;
    width: min(720px, calc(100% - 32px));
    transform: translateX(-50%);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "track controls"
      "progress progress";
    align-items: center;
  }

  .player-track { grid-area: track; margin: 0; }
  .player-controls { grid-area: controls; }
  .player-progress { grid-area: progress; margin: 0; }

  .app { padding-bottom: calc(var(--player-height) + 48px); }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ---------- 移动端细节 ---------- */

@media (max-width: 759px) {
  /* 首屏兜底值；播放后由 JS 按实际高度覆盖 */
  :root { --player-height: 176px; }

  .app { padding-left: 12px; padding-right: 12px; }
  .topbar-inner { padding-left: 12px; padding-right: 12px; }

  /* 触摸目标不小于 44px */
  .ctl { width: 44px; height: 44px; }
  .ctl-main { width: 52px; height: 52px; }

  .seek { height: 28px; }
  .seek::-webkit-slider-thumb { width: 14px; height: 14px; margin-top: -5.5px; }
}

/* 防止 iOS 上双击缩放带来的延迟 */
button, input { touch-action: manipulation; }

/* 输入框在 iOS 上字号小于 16px 会触发自动放大 */
@media (max-width: 759px) {
  .search input { font-size: 16px; }
}