/**
 * Frontend CSS: Music Album — 音乐专辑模块 (Polished)
 *
 * 视觉协调性系统总则：
 * - 进度条、时间、音量控制使用统一 baseline 对齐
 * - 所有控件按钮视觉重量平衡：30px 图标，按钮间距统一
 * - 列表分隔线贯穿全宽，衬度柔和，行间距舒适
 */

:root {
  --ema-padding: 1.25rem;
  --ema-cover-size: 160px;
  --ema-ctrl-height: 3px;      /* 进度条/音量条通用粗细 */
  --ema-ctrl-thumb: 10px;      /* 滑块统一尺寸 */
}

.enstudio-music-album {
  margin: 2rem 0;
  width: 100%;
}

/* ── Card Container ── */
.ema-card {
  background-color: var(--en-music-card-bg, transparent);
  border: var(--en-music-card-border-w, 1px) solid var(--en-music-border);
  border-radius: var(--en-music-radius, 0);
  overflow: hidden;
  color: var(--en-music-text);
}

[data-en-color-mode="dark"] .ema-card {
  background-color: var(--en-music-card-bg-dark, transparent);
  border-color: var(--en-music-dark-border);
  color: var(--en-music-dark-text);
}

/* ── Player Section (Flattened) ── */
.ema-player-section {
  padding: 0 !important;
}

/* Top Area: Cover + Info */
.ema-player-top {
  display: flex;
  align-items: stretch;
  height: var(--ema-cover-size);
  background: rgba(0,0,0,0.01);
}

@media (max-width: 900px) {
  .ema-player-top {
    flex-direction: column;
    height: auto;
  }
}

/* Aside: Square Cover */
.ema-player-aside {
  flex: 0 0 var(--ema-cover-size);
  width: var(--ema-cover-size);
  height: var(--ema-cover-size);
  border-right: 1px solid var(--en-music-border);
}

@media (max-width: 900px) {
  .ema-player-aside {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--en-music-border);
  }
}

.ema-player-cover {
  width: 100%;
  height: 100%;
  background: #eee;
  overflow: hidden;
}

@media (max-width: 900px) {
  .ema-player-cover { aspect-ratio: 1/1; height: auto; }
}

.ema-player-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Info Stack */
.ema-info-stack {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0.85rem var(--ema-padding);
  min-width: 0;
  justify-content: space-between;
}

@media (max-width: 900px) {
  .ema-info-stack { 
    padding: 1.25rem; 
    height: auto; 
    min-height: 160px; /* 保证至少160px，若标题换行则自动撑开以防重叠 */
    gap: 1.2rem;       /* 强制元素间的安全距离，彻底杜绝重叠 */
    justify-content: center;
  }
}

.ema-metadata {
  margin: 0 !important;
  padding: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.ema-track-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 !important;
  padding: 0;
  line-height: 1.2;
}

.ema-track-artist {
  font-size: 0.85rem;
  color: var(--en-music-muted);
  font-weight: 500;
  margin-top: 0.2rem;
}


/* Progress bar: full width, no time */
.ema-progress-bar {
  width: 100%;
  height: var(--ema-ctrl-height);
  background: var(--en-music-progress-bg); /* 通过自定义界面动态设置 */
  border-radius: 99px;
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
}

[data-en-color-mode="dark"] .ema-progress-bar {
  background: var(--en-music-progress-bg-dark);
}

.ema-progress-fill {
  position: absolute;
  left: 0; top: 0;
  height: 100%;
  background: var(--en-music-progress-fill);
  border-radius: 99px;
  width: 0%;
}

[data-en-color-mode="dark"] .ema-progress-fill {
  background: var(--en-music-progress-fill-dark);
}

/* Actions Row: buttons left, mode+volume right */
.ema-actions-row {
  display: flex;
  align-items: flex-end; /* 桌面端对齐到底部 */
  justify-content: space-between;
  flex: 1;
}

@media (max-width: 900px) {
  .ema-actions-row {
    flex: 0 0 auto;
    align-items: center; /* 移动端恢复垂直居中 */
  }
  .ema-metadata { flex: 0 0 auto; }
}

.ema-actions-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.ema-playback-btns {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* All control buttons — uniform 30px icon */
.ema-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  color: var(--en-music-text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s;
  flex-shrink: 0;
}
.ema-btn:hover { opacity: 0.6; }

/* Prev / Next */
.ema-btn-prev svg,
.ema-btn-next svg {
  width: 24px; height: 24px; fill: currentColor;
}

/* Play button */
.ema-btn-play {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--en-music-accent);
  color: #fff;
  overflow: visible;
}
.ema-btn-play svg { width: 20px; height: 20px; display: block; fill: #fff; }

[data-en-color-mode="dark"] .ema-btn-play {
  background-color: var(--en-music-dark-accent);
}

/* Loop button */
.ema-btn-loop {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  color: var(--en-music-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s;
}
.ema-btn-loop svg { width: 20px; height: 20px; fill: currentColor; }
.ema-btn-loop[data-mode="one"],
.ema-btn-loop[data-mode="shuffle"] { color: var(--en-music-accent); }

/* Volume row: icon + slider, vertically centered with progress */
.ema-volume-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.ema-volume-icon {
  width: 20px; height: 20px;
  opacity: 0.5;
  flex-shrink: 0;
}

.ema-volume-slider {
  width: 70px;
  height: var(--ema-ctrl-height); /* 与进度条同粗 */
  -webkit-appearance: none;
  appearance: none;
  background: var(--en-music-border);
  border-radius: 99px;
  outline: none;
  cursor: pointer;
}
.ema-volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: var(--ema-ctrl-thumb);
  height: var(--ema-ctrl-thumb);
  background: var(--en-music-text);
  border-radius: 50%;
  cursor: pointer;
}
.ema-volume-slider::-moz-range-thumb {
  width: var(--ema-ctrl-thumb);
  height: var(--ema-ctrl-thumb);
  background: var(--en-music-text);
  border-radius: 50%;
  border: none;
  cursor: pointer;
}

/* ── Bottom Section: Track List ── */
.ema-tracklist-wrap {
  border-top: 1px solid var(--en-music-border);
}

.ema-tracklist {
  list-style: none;
  margin: 0 !important;
  padding: 0;
  margin-block-end: 0 !important;
}

.ema-track-item {
  display: flex;
  align-items: center;
  padding: 10px var(--ema-padding);
  cursor: pointer;
  border-bottom: 1px solid var(--en-music-border);
  transition: background 0.15s;
  font-size: 13px;
  gap: 0;
}
/* 最后一条移除底线，并确保高度一致 */
.ema-track-item:last-child {
  border-bottom: none;
}

.ema-track-item:hover { background: rgba(0,0,0,0.025); }
[data-en-color-mode="dark"] .ema-track-item:hover { background: rgba(255,255,255,0.03); }

.ema-track-item.is-playing {
  color: var(--en-music-accent);
  font-weight: 600;
}

.ema-track-num {
  width: 28px;
  flex-shrink: 0;
  font-size: 11px;
  opacity: 0.4;
  font-family: monospace;
  line-height: 1;
}

.ema-track-item-info {
  flex: 1;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  min-width: 0;
}

.ema-track-item-title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ema-track-item-artist {
  font-size: 11px;
  opacity: 0.35;
  white-space: nowrap;
  flex-shrink: 0;
}

.ema-track-duration {
  font-size: 11px;
  opacity: 0.35;
  font-family: monospace;
  flex-shrink: 0;
  margin-left: auto;
  padding-left: 0.5rem;
}