/* ==========================================================================
   梦幻丨乌托邦探险之旅 - 底部音乐播放控件（磨砂玻璃灵动岛）
   磨砂玻璃材质与自适应平滑动画（匹配设备原生刷新率）
   ========================================================================== */

:root {
  /* 浅色模式液态玻璃变量 */
  --island-frost-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.65) 0%, rgba(240, 245, 255, 0.45) 100%);
  --island-frost-border: rgba(255, 255, 255, 0.35);
  --island-frost-border-inner: rgba(0, 0, 0, 0.06);
  --island-frost-text: #1d1d1f;
  --island-frost-text-muted: rgba(29, 29, 31, 0.65);
  --island-frost-accent: #0071e3;
  --island-frost-accent-glow: rgba(0, 113, 227, 0.28);
  --island-frost-hover: rgba(0, 0, 0, 0.06);
  --island-frost-card-bg: rgba(255, 255, 255, 0.5);
  --island-frost-shadow: 0 16px 44px rgba(30, 42, 80, 0.12), 0 4px 14px rgba(30, 42, 80, 0.06);
  --island-spring: cubic-bezier(0.2, 0.9, 0.3, 1.15);
}

/* 深色模式液态玻璃变量 */
html[data-theme="dark"] {
  --island-frost-bg: linear-gradient(135deg, rgba(28, 30, 38, 0.7) 0%, rgba(16, 18, 24, 0.58) 100%);
  --island-frost-border: rgba(255, 255, 255, 0.15);
  --island-frost-border-inner: rgba(255, 255, 255, 0.08);
  --island-frost-text: #ffffff;
  --island-frost-text-muted: rgba(255, 255, 255, 0.65);
  --island-frost-accent: #0071e3;
  --island-frost-accent-glow: rgba(0, 113, 227, 0.4);
  --island-frost-hover: rgba(255, 255, 255, 0.12);
  --island-frost-card-bg: rgba(255, 255, 255, 0.06);
  --island-frost-shadow: 0 18px 48px rgba(0, 0, 0, 0.45), 0 4px 14px rgba(0, 0, 0, 0.25);
}

/* 页面底部避让间距与 Toast 定位 */
body {
  padding-bottom: 76px;
}

.toast {
  bottom: calc(84px + env(safe-area-inset-bottom, 0px)) !important;
  z-index: 10001 !important;
}

/* 根容器：固定居中吸附于视口底部 */
.music-island-container {
  position: fixed;
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'PingFang SC', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* 灵动岛主体外壳 - 液态玻璃光学质感 */
.music-island {
  pointer-events: auto;
  position: relative;
  background: var(--island-frost-bg);
  backdrop-filter: blur(24px) saturate(190%);
  -webkit-backdrop-filter: blur(24px) saturate(190%);
  border: 1px solid var(--island-frost-border);
  box-shadow: var(--island-frost-shadow);
  color: var(--island-frost-text);
  overflow: hidden;
  user-select: none;
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  will-change: width, height, border-radius, transform, box-shadow;
  transition: width 0.36s var(--island-spring),
              height 0.36s var(--island-spring),
              border-radius 0.36s var(--island-spring),
              transform 0.36s var(--island-spring),
              background 0.3s ease,
              border-color 0.3s ease,
              box-shadow 0.3s ease;
}

/* --------------------------------------------------------------------------
   三大形态容器定义与渐变交叉过渡 (Cross-fade)
   -------------------------------------------------------------------------- */
.island-pill-content,
.island-expanded-content,
.island-orb-content {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* 1. 胶囊态 (Pill Mode) */
.music-island.is-pill {
  width: 324px;
  height: 48px;
  border-radius: 24px;
  cursor: pointer;
}

.music-island.is-pill:hover {
  transform: translate3d(0, -2px, 0) scale(1.02);
  box-shadow: 0 22px 52px rgba(0, 0, 0, 0.18);
}

html[data-theme="dark"] .music-island.is-pill:hover {
  box-shadow: 0 22px 52px rgba(0, 0, 0, 0.5);
}

.music-island.is-pill .island-pill-content {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
  visibility: visible;
  transition: opacity 0.24s ease 0.06s, transform 0.24s var(--island-spring) 0.06s;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px 6px 8px;
}

.music-island.is-pill .island-expanded-content {
  opacity: 0;
  transform: scale(0.94) translateY(12px);
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s 0.2s;
}

.music-island.is-pill .island-orb-content {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0s 0.2s;
}

/* 2. 展开大岛态 (Expanded Mode) */
.music-island.is-expanded {
  width: 380px;
  height: 232px;
  border-radius: 28px;
  cursor: default;
}

.music-island.is-expanded.has-playlist-open {
  height: 388px;
}

.music-island.is-expanded .island-pill-content {
  opacity: 0;
  transform: scale(0.92) translateY(-10px);
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0s 0.2s;
}

.music-island.is-expanded .island-expanded-content {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: auto;
  visibility: visible;
  transition: opacity 0.28s ease 0.08s, transform 0.32s var(--island-spring) 0.06s;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px 18px 16px;
}

.music-island.is-expanded .island-orb-content {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0s 0.2s;
}

/* 3. 微型球态 (Minimized Orb Mode) */
.music-island.is-minimized {
  width: 44px;
  min-width: 44px;
  max-width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border-radius: 22px;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.music-island.is-minimized:hover {
  transform: translate3d(0, -2px, 0) scale(1.1);
  box-shadow: 0 14px 36px var(--island-frost-accent-glow);
}

.music-island.is-minimized .island-pill-content,
.music-island.is-minimized .island-expanded-content {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.15s ease, visibility 0s 0.2s;
}

.music-island.is-minimized .island-orb-content {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
  visibility: visible;
  transition: opacity 0.25s ease 0.06s, transform 0.25s var(--island-spring) 0.06s;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   内部组件细节样式
   -------------------------------------------------------------------------- */

/* 唱片黑胶封面 */
.island-disc {
  position: relative;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  background: #111;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.island-disc-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  animation: disc-spin 14s linear infinite;
  animation-play-state: paused;
}

.island-disc.is-playing .island-disc-img {
  animation-play-state: running;
}

.island-disc-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #111;
  border: 2px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
}

@keyframes disc-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 胶囊态文字信息 */
.island-pill-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  flex: 1;
}

.island-pill-title {
  font-size: 13px;
  font-weight: 750;
  color: var(--island-frost-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.25;
}

.island-pill-artist {
  font-size: 11px;
  font-weight: 500;
  color: var(--island-frost-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.25;
  display: flex;
  align-items: center;
  gap: 5px;
}

/* 跳动音浪条 */
.island-wave-bars {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
}

.island-wave-bar {
  width: 2px;
  height: 3px;
  background: var(--island-frost-accent);
  border-radius: 1px;
  transition: height 0.15s ease;
}

.is-playing .island-wave-bar:nth-child(1) { animation: wave-anim 0.8s ease-in-out infinite alternate; }
.is-playing .island-wave-bar:nth-child(2) { animation: wave-anim 0.6s ease-in-out infinite alternate 0.2s; }
.is-playing .island-wave-bar:nth-child(3) { animation: wave-anim 0.9s ease-in-out infinite alternate 0.4s; }
.is-playing .island-wave-bar:nth-child(4) { animation: wave-anim 0.7s ease-in-out infinite alternate 0.1s; }

@keyframes wave-anim {
  0% { height: 3px; }
  100% { height: 12px; background: #60a5fa; }
}

/* 按钮通用 */
.island-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--island-frost-text);
  cursor: pointer;
  border-radius: 50%;
  transition: background 0.18s ease, transform 0.15s ease, color 0.18s ease;
  padding: 0;
}

.island-btn:hover {
  background: var(--island-frost-hover);
  color: var(--island-frost-accent);
  transform: scale(1.08);
}

.island-btn:active {
  transform: scale(0.92);
}

.island-btn svg {
  width: 16px;
  height: 16px;
  display: block;
  pointer-events: none;
}

.island-pill-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.island-btn-play-pill {
  width: 30px;
  height: 30px;
  background: var(--island-frost-card-bg);
  border: 1px solid var(--island-frost-border);
}

.island-btn-play-pill:hover {
  background: var(--island-frost-accent);
  color: #fff;
  border-color: var(--island-frost-accent);
}

.island-btn-play-pill svg {
  width: 14px;
  height: 14px;
}

.island-btn-next-pill {
  width: 26px;
  height: 26px;
  color: var(--island-frost-text-muted);
}

.island-btn-expand-pill {
  width: 22px;
  height: 22px;
  color: var(--island-frost-text-muted);
  margin-left: 2px;
}

.island-btn-expand-pill svg {
  width: 14px;
  height: 14px;
}

/* 展开态：顶部工具栏 */
.island-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-shrink: 0;
}

.island-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--island-frost-accent);
  background: var(--island-frost-accent-glow);
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid rgba(0, 113, 227, 0.25);
  text-transform: uppercase;
}

.island-badge svg {
  width: 12px;
  height: 12px;
}

.island-header-tools {
  display: flex;
  align-items: center;
  gap: 4px;
}

.island-tool-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: var(--island-frost-text-muted);
  background: var(--island-frost-card-bg);
  border: 1px solid var(--island-frost-border-inner);
}

.island-tool-btn:hover {
  background: var(--island-frost-hover);
  color: var(--island-frost-text);
}

.island-tool-btn.is-active {
  color: #fff;
  background: var(--island-frost-accent);
  border-color: var(--island-frost-accent);
}

.island-tool-btn svg {
  width: 14px;
  height: 14px;
}

/* 展开态：主卡片 */
.island-main-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  background: var(--island-frost-card-bg);
  border: 1px solid var(--island-frost-border-inner);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.island-ambient-glow {
  position: absolute;
  top: -20%;
  left: -10%;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--island-frost-accent);
  opacity: 0.2;
  filter: blur(28px);
  pointer-events: none;
}

.island-cover-wrap {
  position: relative;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--island-frost-border);
}

.island-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.island-meta-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.island-track-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--island-frost-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.island-track-artist {
  font-size: 11px;
  font-weight: 500;
  color: var(--island-frost-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.island-track-album {
  font-size: 10px;
  font-weight: 600;
  color: var(--island-frost-text-muted);
  opacity: 0.8;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 进度条 */
.island-progress-section {
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex-shrink: 0;
}

.island-progress-bar-wrap {
  position: relative;
  height: 6px;
  width: 100%;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 999px;
  cursor: pointer;
  transition: height 0.15s ease;
}

html[data-theme="dark"] .island-progress-bar-wrap {
  background: rgba(255, 255, 255, 0.14);
}

.island-progress-bar-wrap:hover {
  height: 8px;
}

.island-progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #0071e3, #60a5fa);
  border-radius: 999px;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

.island-progress-handle {
  position: absolute;
  top: 50%;
  left: 0%;
  transform: translate(-50%, -50%) scale(0);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
  transition: transform 0.15s ease;
  pointer-events: none;
}

.island-progress-bar-wrap:hover .island-progress-handle {
  transform: translate(-50%, -50%) scale(1);
}

.island-time-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 10px;
  font-weight: 650;
  color: var(--island-frost-text-muted);
  font-variant-numeric: tabular-nums;
}

/* 主控制按键 */
.island-controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-shrink: 0;
}

.island-mode-btn {
  width: 30px;
  height: 30px;
  color: var(--island-frost-text-muted);
}

.island-mode-btn:hover {
  color: var(--island-frost-text);
}

.island-mode-btn.is-active {
  color: var(--island-frost-accent);
}

.island-main-btns {
  display: flex;
  align-items: center;
  gap: 12px;
}

.island-skip-btn {
  width: 32px;
  height: 32px;
  color: var(--island-frost-text);
}

.island-skip-btn:hover {
  color: var(--island-frost-accent);
}

.island-skip-btn svg {
  width: 18px;
  height: 18px;
}

.island-play-btn-large {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0071e3 0%, #005bb5 100%);
  color: #fff;
  box-shadow: 0 6px 18px rgba(0, 113, 227, 0.42);
}

.island-play-btn-large:hover {
  background: linear-gradient(135deg, #0077ed 0%, #0066cc 100%);
  box-shadow: 0 8px 22px rgba(0, 113, 227, 0.6);
  transform: scale(1.05);
}

.island-play-btn-large:active {
  transform: scale(0.94);
}

.island-play-btn-large svg {
  width: 20px;
  height: 20px;
}

/* 音量控制 */
.island-volume-wrap {
  display: flex;
  align-items: center;
  gap: 5px;
  width: 76px;
}

.island-volume-btn {
  width: 24px;
  height: 24px;
  color: var(--island-frost-text-muted);
}

.island-volume-btn svg {
  width: 13px;
  height: 13px;
}

.island-volume-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.1);
  outline: none;
  cursor: pointer;
  accent-color: var(--island-frost-accent);
}

html[data-theme="dark"] .island-volume-slider {
  background: rgba(255, 255, 255, 0.18);
}

.island-volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.15);
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

/* 播放列表抽屉 */
.island-playlist-drawer {
  max-height: 0;
  opacity: 0;
  overflow-y: auto;
  transition: max-height 0.32s var(--island-spring), opacity 0.22s ease;
  display: flex;
  flex-direction: column;
  gap: 3px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid transparent;
  flex: 1;
}

html[data-theme="dark"] .island-playlist-drawer {
  background: rgba(0, 0, 0, 0.25);
}

.has-playlist-open .island-playlist-drawer {
  max-height: 156px;
  opacity: 1;
  margin-top: 4px;
  padding: 4px;
  border-color: var(--island-frost-border-inner);
}

.island-playlist-drawer::-webkit-scrollbar {
  width: 4px;
}
.island-playlist-drawer::-webkit-scrollbar-thumb {
  background: var(--island-frost-text-muted);
  opacity: 0.3;
  border-radius: 999px;
}

.island-playlist-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.island-playlist-item:hover {
  background: var(--island-frost-hover);
}

.island-playlist-item.is-active {
  background: var(--island-frost-accent-glow);
  border: 1px solid rgba(0, 113, 227, 0.3);
}

.island-playlist-item-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
}

.island-playlist-idx {
  font-size: 10px;
  font-weight: 700;
  color: var(--island-frost-text-muted);
  width: 14px;
  text-align: center;
}

.island-playlist-item.is-active .island-playlist-idx {
  color: var(--island-frost-accent);
}

.island-playlist-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.island-playlist-name {
  font-size: 11px;
  font-weight: 700;
  color: var(--island-frost-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.island-playlist-artist {
  font-size: 9px;
  color: var(--island-frost-text-muted);
}

.island-playlist-dur {
  font-size: 10px;
  font-weight: 600;
  color: var(--island-frost-text-muted);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

/* 微型球态 */
.island-orb-disc {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
}

.island-orb-disc img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: disc-spin 14s linear infinite;
  animation-play-state: paused;
}

.is-playing .island-orb-disc img {
  animation-play-state: running;
}

.island-orb-icon-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  border-radius: 50%;
}

.island-orb-icon-overlay svg {
  width: 18px;
  height: 18px;
}

/* 移动端窄屏适配 */
@media (max-width: 480px) {
  .music-island.is-pill {
    width: min(290px, calc(100vw - 32px));
    height: 44px;
    border-radius: 22px;
  }
  .music-island.is-expanded {
    width: min(340px, calc(100vw - 24px));
    height: 224px;
    border-radius: 24px;
  }
  .music-island.is-expanded.has-playlist-open {
    height: 370px;
  }
  .island-cover-wrap {
    width: 46px;
    height: 46px;
  }
  .island-volume-wrap {
    display: none;
  }
}

@media (max-width: 480px), (max-width: 760px) and (max-height: 460px) {
  .music-island-container {
    bottom: calc(30px + env(safe-area-inset-bottom, 0px));
    right: env(safe-area-inset-right, 0px);
    left: auto;
    transform: none;
  }
}