/* CSS变量定义 - 默认配色方案（暗色主题） */
:root {
  --primary-color: #6c5ce7;
  --secondary-color: #a29bfe;
  --accent-color: #00b894;
  --text-color: #f8f9fa;
  --bg-color: rgba(52, 58, 64, 0.95);
  --container-bg: rgba(73, 80, 87, 0.9);
  --border-color: #495057;
  --hover-color: rgba(108, 92, 231, 0.2);
  --active-color: rgba(108, 92, 231, 0.3);
  --shadow-color: rgba(108, 92, 231, 0.4);
  --body-bg: linear-gradient(135deg, #2d3436 0%, #636e72 100%);
  --card-bg: rgba(52, 58, 64, 0.95);
  --input-bg: #495057;
  --text-muted: #adb5bd;
  --success-color: #00b894;
  --warning-color: #fdcb6e;
  --danger-color: #e74c3c;
}

/* 配色方案定义 */
[data-theme="light"] {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --accent-color: #28a745;
  --text-color: #212529;
  --bg-color: rgba(255, 255, 255, 0.98);
  --container-bg: rgba(248, 249, 250, 0.95);
  --border-color: #dee2e6;
  --hover-color: rgba(0, 123, 255, 0.1);
  --active-color: rgba(0, 123, 255, 0.2);
  --shadow-color: rgba(0, 123, 255, 0.3);
  --body-bg: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  --card-bg: rgba(255, 255, 255, 0.95);
  --input-bg: #ffffff;
  --text-muted: #6c757d;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
}

[data-theme="default"] {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #28a745;
  --text-color: #333;
  --bg-color: rgba(255, 255, 255, 0.95);
  --container-bg: rgba(255, 255, 255, 0.9);
  --border-color: #e1e5e9;
  --hover-color: rgba(102, 126, 234, 0.1);
  --active-color: rgba(102, 126, 234, 0.2);
  --shadow-color: rgba(102, 126, 234, 0.3);
  --body-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --card-bg: rgba(255, 255, 255, 0.95);
  --input-bg: #ffffff;
  --text-muted: #666;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
}

[data-theme="dark"] {
  --primary-color: #6c5ce7;
  --secondary-color: #a29bfe;
  --accent-color: #00b894;
  --text-color: #f8f9fa;
  --bg-color: rgba(52, 58, 64, 0.95);
  --container-bg: rgba(73, 80, 87, 0.9);
  --border-color: #495057;
  --hover-color: rgba(108, 92, 231, 0.2);
  --active-color: rgba(108, 92, 231, 0.3);
  --shadow-color: rgba(108, 92, 231, 0.4);
  --body-bg: linear-gradient(135deg, #2d3436 0%, #636e72 100%);
  --card-bg: rgba(52, 58, 64, 0.95);
  --input-bg: #495057;
  --text-muted: #adb5bd;
  --success-color: #00b894;
  --warning-color: #fdcb6e;
  --danger-color: #e74c3c;
}

[data-theme="image"] {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #28a745;
  --text-color: #333;
  --bg-color: rgba(255, 255, 255, 0.95);
  --container-bg: rgba(255, 255, 255, 0.9);
  --border-color: #e1e5e9;
  --hover-color: rgba(102, 126, 234, 0.1);
  --active-color: rgba(102, 126, 234, 0.2);
  --shadow-color: rgba(102, 126, 234, 0.3);
  --body-bg: url('background.jpg');
  --card-bg: rgba(255, 255, 255, 0.95);
  --input-bg: #ffffff;
  --text-muted: #666;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
}

[data-theme="green"] {
  --primary-color: #00b894;
  --secondary-color: #00cec9;
  --accent-color: #fdcb6e;
  --text-color: #2d3436;
  --bg-color: rgba(255, 255, 255, 0.95);
  --container-bg: rgba(255, 255, 255, 0.9);
  --border-color: #e1e5e9;
  --hover-color: rgba(0, 184, 148, 0.1);
  --active-color: rgba(0, 184, 148, 0.2);
  --shadow-color: rgba(0, 184, 148, 0.3);
  --body-bg: linear-gradient(135deg, #00b894 0%, #00cec9 100%);
  --card-bg: rgba(255, 255, 255, 0.95);
  --input-bg: #ffffff;
  --text-muted: #666;
  --success-color: #00b894;
  --warning-color: #fdcb6e;
  --danger-color: #e74c3c;
}

[data-theme="orange"] {
  --primary-color: #f39c12;
  --secondary-color: #e67e22;
  --accent-color: #e74c3c;
  --text-color: #2c3e50;
  --bg-color: rgba(255, 255, 255, 0.95);
  --container-bg: rgba(255, 255, 255, 0.9);
  --border-color: #e1e5e9;
  --hover-color: rgba(243, 156, 18, 0.1);
  --active-color: rgba(243, 156, 18, 0.2);
  --shadow-color: rgba(243, 156, 18, 0.3);
  --body-bg: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
  --card-bg: rgba(255, 255, 255, 0.95);
  --input-bg: #ffffff;
  --text-muted: #666;
  --success-color: #f39c12;
  --warning-color: #e67e22;
  --danger-color: #e74c3c;
}

[data-theme="purple"] {
  --primary-color: #9b59b6;
  --secondary-color: #8e44ad;
  --accent-color: #e74c3c;
  --text-color: #2c3e50;
  --bg-color: rgba(255, 255, 255, 0.95);
  --container-bg: rgba(255, 255, 255, 0.9);
  --border-color: #e1e5e9;
  --hover-color: rgba(155, 89, 182, 0.1);
  --active-color: rgba(155, 89, 182, 0.2);
  --shadow-color: rgba(155, 89, 182, 0.3);
  --body-bg: linear-gradient(135deg, #9b59b6 0%, #8e44ad 100%);
  --card-bg: rgba(255, 255, 255, 0.95);
  --input-bg: #ffffff;
  --text-muted: #666;
  --success-color: #9b59b6;
  --warning-color: #8e44ad;
  --danger-color: #e74c3c;
}

[data-theme="red"] {
  --primary-color: #e74c3c;
  --secondary-color: #c0392b;
  --accent-color: #f39c12;
  --text-color: #2c3e50;
  --bg-color: rgba(255, 255, 255, 0.95);
  --container-bg: rgba(255, 255, 255, 0.9);
  --border-color: #e1e5e9;
  --hover-color: rgba(231, 76, 60, 0.1);
  --active-color: rgba(231, 76, 60, 0.2);
  --shadow-color: rgba(231, 76, 60, 0.3);
  --body-bg: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
  --card-bg: rgba(255, 255, 255, 0.95);
  --input-bg: #ffffff;
  --text-muted: #666;
  --success-color: #e74c3c;
  --warning-color: #f39c12;
  --danger-color: #c0392b;
}

[data-theme="cyan"] {
  --primary-color: #00cec9;
  --secondary-color: #74b9ff;
  --accent-color: #fd79a8;
  --text-color: #2d3436;
  --bg-color: rgba(255, 255, 255, 0.95);
  --container-bg: rgba(255, 255, 255, 0.9);
  --border-color: #e1e5e9;
  --hover-color: rgba(0, 206, 201, 0.1);
  --active-color: rgba(0, 206, 201, 0.2);
  --shadow-color: rgba(0, 206, 201, 0.3);
  --body-bg: linear-gradient(135deg, #00cec9 0%, #74b9ff 100%);
  --card-bg: rgba(255, 255, 255, 0.95);
  --input-bg: #ffffff;
  --text-muted: #666;
  --success-color: #00cec9;
  --warning-color: #74b9ff;
  --danger-color: #fd79a8;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-color);
  text-align: center;
  padding: 20px;
  margin: 0;
  min-height: 100vh;
  background: var(--body-bg);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  transition: all 0.3s ease;
}

/* 为图片主题添加遮罩层 */
body[data-theme="image"]::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.3) 0%, rgba(118, 75, 162, 0.3) 100%);
  z-index: -1;
}

.player-container {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-color);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  padding: 30px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.player-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

h1 {
  font-size: 28px;
  margin-bottom: 30px;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: bold;
}

/* 设置面板样式 */
.settings-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 25px;
}

.settings-card {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 20px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.settings-card h3 {
  margin: 0 0 15px 0;
  color: var(--text-color);
  font-size: 16px;
  font-weight: 600;
}

/* 配色选择器样式 */
.theme-selector {
  margin-bottom: 15px;
}

.theme-selector label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-color);
}

#theme-select {
  width: 100%;
  padding: 10px 12px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: 14px;
  transition: all 0.3s ease;
}

#theme-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

/* 自选歌单播放设置样式 */
.playlist-selection-settings {
  margin-bottom: 15px;
}

.setting-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.setting-header h3 {
  margin: 0;
  color: var(--text-color);
  font-size: 16px;
  font-weight: 600;
}

/* 开关样式 */
.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: .4s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary-color);
}

input:checked + .slider:before {
  transform: translateX(26px);
}

.playlist-selection {
  margin-top: 15px;
  padding: 15px;
  background: var(--container-bg);
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.playlist-selection p {
  margin: 0 0 15px 0;
  font-weight: 600;
  color: var(--text-color);
  font-size: 14px;
}

.playlist-checkboxes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
  margin-bottom: 15px;
}

.playlist-checkbox {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  background: var(--input-bg);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
  color: var(--text-color);
}

.playlist-checkbox:hover {
  background: var(--hover-color);
  border-color: var(--primary-color);
}

.playlist-checkbox input[type="checkbox"] {
  margin-right: 8px;
  accent-color: var(--primary-color);
}

.apply-btn {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s ease;
}

.apply-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

/* 歌单选择器样式 */
.playlist-selector {
  margin-bottom: 25px;
  background: var(--card-bg);
  padding: 20px;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.playlist-selector label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-color);
}

#folder-select {
  width: 100%;
  font-size: 16px;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  background: var(--input-bg);
  transition: all 0.3s ease;
  color: var(--text-color);
}

#folder-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.playlist {
  margin-top: 25px;
  background: var(--card-bg);
  padding: 20px;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.playlist h2 {
  color: var(--text-color);
  font-size: 18px;
  margin-bottom: 15px;
  font-weight: 600;
}

#song-list {
  list-style: none;
  padding: 0;
  max-height: 300px;
  overflow-y: auto;
  border-radius: 10px;
  background: var(--container-bg);
  border: 1px solid var(--border-color);
}

#song-list li {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: left;
  position: relative;
  color: var(--text-color);
  font-size: 14px;
}

#song-list li:hover {
  background: var(--hover-color);
  transform: translateX(3px);
}

#song-list li.playing {
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  color: white;
  font-weight: 600;
}

.controls {
  margin-top: 25px;
  background: var(--card-bg);
  padding: 20px;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

#audio-player {
  width: 100%;
  margin-bottom: 20px;
  border-radius: 10px;
}

.playback-options {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.playback-options button {
  margin: 5px;
  font-size: 14px;
  padding: 12px 20px;
  border: none;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px var(--shadow-color);
  font-weight: 500;
}

.playback-options button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--shadow-color);
}

.playback-options button.active {
  background: linear-gradient(45deg, var(--accent-color), #20c997);
  box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

#now-playing {
  margin: 25px 0;
  font-size: 18px;
  font-weight: bold;
  color: var(--text-color);
  padding: 15px;
  background: var(--container-bg);
  border-radius: 10px;
  border-left: 4px solid var(--primary-color);
}

#now-playing-title {
  color: var(--primary-color);
  font-weight: bold;
}

.pagination {
  margin: 20px 0;
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.pagination button {
  padding: 8px 12px;
  font-size: 14px;
  border: none;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px var(--shadow-color);
}

.pagination button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

.pagination button.active {
  background: linear-gradient(45deg, var(--accent-color), #20c997);
  box-shadow: 0 2px 8px rgba(40, 167, 69, 0.3);
}

.lyrics-container {
  margin-top: 25px;
  padding: 20px;
  background: var(--container-bg);
  border-radius: 15px;
  border: 1px solid var(--border-color);
  min-height: 150px;
  max-height: 300px;
  overflow-y: auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.lyrics-display {
  text-align: center;
  line-height: 1.8;
}

.lyrics-line {
  margin: 8px 0;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all 0.3s ease;
  opacity: 0.7;
  color: var(--text-color);
}

.lyrics-line.active {
  background: var(--active-color);
  color: var(--primary-color);
  font-weight: bold;
  opacity: 1;
  transform: scale(1.05);
}

.lyrics-translation {
  font-size: 0.85em;
  color: var(--text-muted);
  margin-top: 2px;
  font-style: italic;
}

.lyrics-container::-webkit-scrollbar {
  width: 6px;
}

.lyrics-container::-webkit-scrollbar-track {
  background: var(--border-color);
  border-radius: 3px;
}

.lyrics-container::-webkit-scrollbar-thumb {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  border-radius: 3px;
}

.lyrics-container::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
}

@media (max-width: 768px) {
  .player-container {
    margin: 10px;
    padding: 20px;
  }
  
  .settings-panel {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  h1 {
    font-size: 24px;
  }
  
  .playback-options {
    flex-direction: column;
    align-items: center;
  }
  
  .playback-options button {
    width: 100%;
    max-width: 200px;
  }
  
  .pagination {
    gap: 5px;
  }
  
  .pagination button {
    padding: 6px 10px;
    font-size: 12px;
  }
  
  .playlist-checkboxes {
    grid-template-columns: 1fr;
  }
}