* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: '微软雅黑', Microsoft YaHei, Arial, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.title {
    text-align: center;
    font-size: 28px;
    margin-bottom: 30px;
    color: #2c3e50;
    padding-bottom: 10px;
    border-bottom: 2px solid #3498db;
}

.main-content {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
}

/* 左侧控制面板 */
.control-panel {
    flex: 1;
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 右侧预览面板 */
.preview-panel {
    flex: 1;
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.section {
    margin-bottom: 25px;
}

.section-title {
    font-size: 18px;
    margin-bottom: 15px;
    color: #2c3e50;
    font-weight: 600;
    padding-bottom: 5px;
    border-bottom: 1px solid #e0e0e0;
}

/* 上传区域 */
.upload-area {
    text-align: center;
}

.upload-btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #3498db;
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
    margin-bottom: 10px;
}

.upload-btn:hover {
    background-color: #2980b9;
}

.file-name {
    font-size: 14px;
    color: #666;
    min-height: 20px;
}

/* 设置区域 */
.settings {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.setting-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.setting-row label {
    min-width: 80px;
    font-size: 14px;
    color: #555;
}

.setting-row input[type="number"] {
    width: 80px;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.unit {
    font-size: 14px;
    color: #666;
}

/* 颜色选择器 */
.color-picker {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-picker input[type="color"] {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    padding: 0;
}

.color-preview {
    width: 30px;
    height: 30px;
    border-radius: 4px;
    border: 1px solid #ddd;
}

/* 下拉选择器 */
.setting-row select {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    background-color: #fff;
    cursor: pointer;
}

/* 字幕内容 */
#subtitle-content {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    resize: vertical;
    font-family: inherit;
}

/* 预览区域 */
.preview-area {
    width: 100%;
    height: 500px;
    background-color: #fafafa;
    border: 1px solid #ddd;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#preview-canvas {
    max-width: 100%;
    max-height: 100%;
    background-color: #fff;
}

/* 操作按钮 */
.actions {
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: center;
    margin-top: 30px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
}

.btn-primary {
    background-color: #3498db;
    color: #fff;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

/* 成功消息 */
.success-message {
    color: #27ae60;
    font-weight: 600;
    background-color: #d4edda;
    padding: 12px 20px;
    border-radius: 4px;
    display: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }
    
    .control-panel,
    .preview-panel {
        width: 100%;
    }
    
    .preview-area {
        height: 400px;
    }
    
    .actions {
        flex-direction: column;
        gap: 10px;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    .title {
        font-size: 24px;
    }
    
    .setting-row {
        flex-direction: column;
        align-items: stretch;
        gap: 5px;
    }
    
    .setting-row label {
        min-width: auto;
    }
    
    .setting-row input[type="number"] {
        width: 100%;
    }
    
    .color-picker {
        justify-content: space-between;
    }
}