/* 基础样式 - 导航、页面布局、按钮、工具栏 */
/* 从 nav.css 拆分而来 */

/* 导航菜单样式 */
.main-nav {
    display: flex;
    gap: 4px;
    margin-left: 40px;
    background: var(--bg-input);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 13px;
    font-weight: 500;
    border: none;
    position: relative;
}

.nav-item:hover {
    color: var(--text-main);
    background: var(--bg-card-hover);
}

.nav-item.active {
    color: white;
    background: linear-gradient(135deg, var(--primary), #ea580c);
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.nav-item i {
    font-size: 14px;
}

/* 页面区域通用样式 */
.page-section {
    animation: fadeIn 0.3s ease;
}

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

/* 页面头部 */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.page-title {
    display: flex;
    align-items: center;
    gap: 16px;
}

.page-title h2 {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-main), #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    letter-spacing: -0.02em;
}

.title-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.title-icon.pending {
    background: linear-gradient(135deg, #f59e0b, #f97316);
    box-shadow: 0 4px 20px rgba(249, 115, 22, 0.4);
}

.title-icon i {
    color: white;
}

.page-info {
    color: var(--text-muted);
    font-size: 13px;
}

/* 工具栏 */
/* 按钮样式 */
.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 9px 18px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(249, 115, 22, 0.1);
    transform: translateY(-1px);
}

.btn-outline:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-outline.btn-danger:hover:not(:disabled) {
    border-color: var(--danger);
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.btn-outline.active {
    background: linear-gradient(135deg, var(--primary), #ea580c);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

/* 过滤标签 */
.filter-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
/* 任务列表 - 四列网格 */
.tasks-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

/* 播放按钮覆盖层 - 仅对已完成的视频 */
/* 加载状态 - 防止页面闪烁 */
body.loading .main-content,
body.loading .header .main-nav,
body.loading .header-right {
    opacity: 0;
    visibility: hidden;
}

body.loading .page-section,
body.loading .auth-section {
    display: none !important;
}

/* 页面加载完成后的过渡动画 */
.main-content,
.header .main-nav,
.header-right {
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* 响应式 */
@media (max-width: 992px) {
    .tasks-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
/* 清晰化按钮样式 */
.btn-enhance {
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-enhance:hover {
    background: linear-gradient(135deg, #7c3aed, #4f46e5);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(139, 92, 246, 0.4);
}

.btn-processing {
    background: var(--bg-card-hover);
    color: var(--primary);
    border: 1px solid var(--primary);
    cursor: not-allowed;
    position: relative;
    overflow: hidden;
}

.btn-processing::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(249, 115, 22, 0.1), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    100% { left: 100%; }
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #059669);
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(16, 185, 129, 0.4);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning), #d97706);
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(245, 158, 11, 0.4);
}

/* 设置按钮 */
.btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-icon:hover {
    background: linear-gradient(135deg, var(--primary), #ea580c);
    border-color: var(--primary);
    color: white;
    transform: rotate(45deg);
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
}

/* 视频清晰化页面样式 */
.title-icon.enhance {
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.enhance-upload-box {
    background: var(--bg-card);
    padding: 35px;
    border-radius: 20px;
    box-shadow: 
        0 10px 40px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid var(--border);
}

.video-upload-area {
    border: 2px dashed var(--border);
    border-radius: 16px;
    padding: 50px 20px;
    text-align: center;
    cursor: pointer !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-input);
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative !important;
    overflow: visible !important; /* 允许文件输入框超出 */
    z-index: 150 !important; /* 确保上传区域可点击 */
    pointer-events: auto !important;
}

.video-upload-area::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05), rgba(249, 115, 22, 0.05));
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none !important; /* 伪元素不拦截点击 */
    z-index: 1 !important; /* 伪元素在底层 */
}

.video-upload-area:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(249, 115, 22, 0.15);
}

.video-upload-area:hover::before {
    opacity: 1;
}

.video-upload-area.dragover {
    border-color: var(--secondary);
    background: rgba(139, 92, 246, 0.1);
    transform: scale(1.02);
}

/* 加载更多按钮 */
.load-more-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    margin-top: 20px;
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: 12px;
    color: var(--text-muted);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.load-more-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.load-more-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.load-more-btn i {
    transition: transform 0.25s ease;
}

.load-more-btn:hover i {
    transform: translateY(3px);
}


/* ==================== 清晰化筛选按钮样式 ==================== */

/* 筛选分隔线 */
.filter-divider {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 8px;
}

/* 清晰中按钮 - 蓝色渐变 */
.filter-tabs button.tab-btn[data-filter="enhancing"],
.filter-tabs button[data-filter="enhancing"] {
    background: linear-gradient(135deg, #3b82f6, #2563eb) !important;
    color: white !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3) !important;
}

.filter-tabs button.tab-btn[data-filter="enhancing"]:hover,
.filter-tabs button[data-filter="enhancing"]:hover {
    background: linear-gradient(135deg, #2563eb, #1d4ed8) !important;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4) !important;
    transform: translateY(-1px);
}

.filter-tabs button.tab-btn[data-filter="enhancing"].active,
.filter-tabs button[data-filter="enhancing"].active {
    background: linear-gradient(135deg, #2563eb, #1d4ed8) !important;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.5) !important;
}

/* 已清晰按钮 - 绿色渐变 */
.filter-tabs button.tab-btn[data-filter="enhanced"],
.filter-tabs button[data-filter="enhanced"] {
    background: linear-gradient(135deg, #22c55e, #16a34a) !important;
    color: white !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.3) !important;
}

.filter-tabs button.tab-btn[data-filter="enhanced"]:hover,
.filter-tabs button[data-filter="enhanced"]:hover {
    background: linear-gradient(135deg, #16a34a, #15803d) !important;
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4) !important;
    transform: translateY(-1px);
}

.filter-tabs button.tab-btn[data-filter="enhanced"].active,
.filter-tabs button[data-filter="enhanced"].active {
    background: linear-gradient(135deg, #16a34a, #15803d) !important;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.5) !important;
}

/* 清晰化按钮图标 */
.filter-tabs button[data-filter="enhancing"] i,
.filter-tabs button[data-filter="enhanced"] i {
    margin-right: 6px;
}

/* 优化操作按钮区域 */
/* 缩小操作按钮区域 */
/* 缩小按钮 */