/* 自定义UI示例样式 */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

h2, h3 {
    color: #555;
    margin-bottom: 15px;
}

/* 主题选择器 */
.theme-selector {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
}

.theme-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.theme-btn {
    padding: 10px 20px;
    border: 2px solid #dee2e6;
    border-radius: 6px;
    background: white;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}

.theme-btn:hover {
    border-color: #007bff;
    background: #f8f9ff;
}

.theme-btn.active {
    border-color: #007bff;
    background: #007bff;
    color: white;
}

/* 播放器区域 */
.player-section {
    margin-bottom: 30px;
}

.player-container {
    background: #000;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    margin-bottom: 20px;
}

/* 自定义控制面板 */
.custom-controls {
    background: #fff;
    border: 1px solid #dee2e6;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
}

.control-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-group label {
    font-weight: 500;
    color: #555;
    font-size: 14px;
}

.control-group input[type="color"] {
    width: 100%;
    height: 40px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.control-group input[type="range"] {
    width: 100%;
    margin: 5px 0;
}

.control-group span {
    font-weight: 500;
    color: #007bff;
    font-size: 12px;
}

/* 组件预览 */
.component-demo {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
}

.preview-components {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.preview-play-button,
.preview-progress,
.preview-volume {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: white;
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.preview-play-button span,
.preview-progress span,
.preview-volume span {
    font-size: 12px;
    color: #666;
    font-weight: 500;
}

/* 预览组件样式 */
.play-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: #007bff;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.play-btn:hover {
    background: #0056b3;
    transform: scale(1.05);
}

.progress-bar {
    width: 150px;
    height: 6px;
    background: #e9ecef;
    border-radius: 3px;
    position: relative;
    cursor: pointer;
}

.progress-fill {
    width: 60%;
    height: 100%;
    background: #007bff;
    border-radius: 3px;
    position: relative;
}

.progress-thumb {
    width: 12px;
    height: 12px;
    background: #007bff;
    border-radius: 50%;
    position: absolute;
    right: -6px;
    top: -3px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.volume-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 4px;
    background: #f8f9fa;
    cursor: pointer;
    font-size: 14px;
}

.volume-slider {
    width: 100px;
    height: 4px;
    background: #e9ecef;
    border-radius: 2px;
    position: relative;
    cursor: pointer;
}

.volume-fill {
    width: 70%;
    height: 100%;
    background: #007bff;
    border-radius: 2px;
}

/* 代码显示区域 */
.code-section {
    background: #2d3748;
    color: #e2e8f0;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
}

.code-section pre {
    margin: 0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 13px;
    line-height: 1.5;
}

.code-section code {
    color: #e2e8f0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .theme-buttons {
        justify-content: center;
    }
    
    .control-panel {
        grid-template-columns: 1fr;
    }
    
    .preview-components {
        grid-template-columns: 1fr;
    }
    
    .progress-bar {
        width: 120px;
    }
    
    .volume-slider {
        width: 80px;
    }
}

/* 主题样式 */
.theme-dark {
    background: #1a1a1a;
    color: #e0e0e0;
}

.theme-dark .theme-selector,
.theme-dark .custom-controls,
.theme-dark .component-demo {
    background: #2d2d2d;
    border-color: #404040;
}

.theme-dark .theme-btn {
    background: #404040;
    border-color: #666;
    color: #e0e0e0;
}

.theme-dark .theme-btn:hover {
    background: #555;
    border-color: #007bff;
}

.theme-dark .theme-btn.active {
    background: #007bff;
    border-color: #007bff;
}

.theme-dark .preview-play-button,
.theme-dark .preview-progress,
.theme-dark .preview-volume {
    background: #404040;
    color: #e0e0e0;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.player-container,
.custom-controls,
.component-demo,
.code-section {
    animation: fadeIn 0.3s ease-out;
}

/* 加载状态 */
.loading {
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}