/* ========================================
   GIF 压缩工具 - 优化样式
   低耦合设计，不影响其他页面
   ======================================== */

/* === 主容器布局优化 === */
.gif-compress-container {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 2rem;
    align-items: start;
}

/* === 左侧配置面板 === */
.config-panel {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* === 上传区域优化 === */
.upload-section {
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1rem;
    border: 1px solid var(--border-color);
}

.upload-content {
    text-align: center;
    padding: 1rem;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-color);
    transition: var(--transition);
}

.upload-area {
    position: relative;
}

#gifFileInput {
    display: none;
}

.upload-content {
    text-align: center;
    padding: 1.5rem;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-color);
    transition: var(--transition);
}

.upload-area:hover .upload-content {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.05);
}

.upload-area.drag-over .upload-content {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.1);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.upload-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.upload-content p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.upload-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.upload-btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--primary-color), #7c3aed);
    color: white;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.875rem;
    box-shadow: var(--shadow-sm);
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* === 文件列表区域 === */
.file-list-section {
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1rem;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    max-height: 300px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.section-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.file-count {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.clear-btn {
    background: none;
    border: none;
    color: var(--danger-color);
    font-size: 0.75rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.clear-btn:hover {
    background: rgba(239, 68, 68, 0.1);
}

.file-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    gap: 0.5rem;
}

.empty-icon {
    font-size: 2rem;
    opacity: 0.5;
}

/* 文件列表项 */
.file-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

.file-item:hover {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.05);
}

.file-item.selected {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.1);
}

.file-item-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.file-item-info {
    flex: 1;
    min-width: 0;
}

.file-item-name {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-item-size {
    font-size: 0.625rem;
    color: var(--text-secondary);
}

.file-item-status {
    flex-shrink: 0;
    font-size: 0.75rem;
}

.status-badge {
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.625rem;
    font-weight: 500;
}

.status-badge.pending {
    background: var(--bg-color);
    color: var(--text-secondary);
}

.status-badge.compressing {
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary-color);
}

.status-badge.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-badge.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.file-item-delete {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 0.875rem;
}

.file-item-delete:hover {
    color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
}

/* === 批量操作按钮 === */
.batch-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.batch-actions .btn-primary,
.batch-actions .btn-secondary {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}

/* === 预览提示 === */
.preview-hint {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(79, 70, 229, 0.1);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    color: var(--text-secondary);
    border: 1px solid rgba(79, 70, 229, 0.2);
}

.hint-icon {
    font-size: 1rem;
}

/* === 整体进度卡片 === */
.overall-progress-card {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: var(--border-radius-lg);
    padding: 1rem;
    border: 1px solid rgba(79, 70, 229, 0.2);
}

.overall-progress-card .progress-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.overall-progress-card .progress-icon {
    font-size: 1.25rem;
    animation: spin 2s linear infinite;
}

.progress-info h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.progress-detail {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.overall-progress-card .progress-bar {
    height: 6px;
    margin-bottom: 0.5rem;
}

.overall-progress-card .progress-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.file-info {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
}

.file-info p {
    margin: 0.25rem 0;
    color: var(--text-secondary);
}

/* === 压缩设置优化 === */
.compress-settings {
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.compress-settings h3 {
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--border-color);
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-item label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.setting-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.setting-value {
    text-align: right;
}

.target-size {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.125rem;
    display: block;
}

.setting-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: block;
}

.setting-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* === 操作按钮优化 === */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.btn-primary,
.btn-secondary {
    padding: 1rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    font-size: 1rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #7c3aed);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:disabled {
    background: var(--border-color);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-secondary {
    background: var(--success-color);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary:disabled {
    background: var(--border-color);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-icon {
    font-size: 1.125rem;
}

/* === 进度区域优化 === */
.progress-section {
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.progress-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.progress-icon {
    font-size: 1.5rem;
    animation: spin 2s linear infinite;
}

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

.progress-section h3 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--bg-color);
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color), var(--success-color));
    background-size: 200% 100%;
    animation: gradient-shift 2s ease infinite;
    transition: width 0.3s ease;
    width: 0%;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
}

/* === 右侧预览面板 === */
.preview-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* === 统计卡片 === */
.stats-card {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-around;
    border: 1px solid rgba(79, 70, 229, 0.2);
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-align: left;
}

.stat-item.highlight {
    background: rgba(255, 255, 255, 0.8);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 1.5rem;
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-value.success {
    color: var(--success-color);
}

.stat-value.primary {
    color: var(--primary-color);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(0, 0, 0, 0.1);
}

/* === 对比预览区域 === */
.compare-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.preview-item {
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1.25rem;
    border: 1px solid var(--border-color);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.preview-header h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.preview-badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    background: var(--bg-color);
    color: var(--text-secondary);
}

.preview-badge.uploaded {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.preview-badge.compressed {
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary-color);
}

.preview-box {
    width: 100%;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    border: 2px dashed var(--border-color);
    overflow: hidden;
}

.preview-box img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.preview-box .placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
}

.placeholder-icon {
    font-size: 2.5rem;
    opacity: 0.5;
}

.image-info {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
}

.image-info p {
    margin: 0.25rem 0;
    color: var(--text-secondary);
}

.image-info .success {
    color: var(--success-color);
    font-weight: 600;
}

.image-info .warning {
    color: var(--warning-color);
    font-weight: 600;
}

/* === 技术说明 === */
.tech-note {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: rgba(6, 182, 212, 0.1);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    color: var(--text-secondary);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.tech-icon {
    font-size: 1.25rem;
}

/* === 响应式设计 === */
@media (max-width: 1200px) {
    .gif-compress-container {
        grid-template-columns: 340px 1fr;
        gap: 1.5rem;
    }

    .compare-preview {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .gif-compress-container {
        grid-template-columns: 1fr;
    }

    .stats-card {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .stat-divider {
        display: none;
    }
}

@media (max-width: 768px) {
    .upload-content {
        padding: 1rem;
    }

    .upload-icon {
        font-size: 2rem;
    }

    .preview-box {
        height: 200px;
    }

    .stats-card {
        padding: 1rem;
    }

    .stat-item {
        flex: 1;
        min-width: 120px;
    }

    .stat-value {
        font-size: 1rem;
    }
}