/* 自定义CSS样式 */
:root {
    --primary-color: #003d82;
    --secondary-color: #0052a8;
    --accent-color: #fbbf24;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --bg-light: #f8fafc;
    --border-color: #e2e8f0;
}

/* Header样式 */
header {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
}

/* 卡片悬停效果 */
.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* 按钮悬停效果 */
.btn-hover {
    transition: all 0.2s ease;
}

.btn-hover:hover {
    transform: scale(1.05);
}

/* 导航链接动画 */
.nav-link {
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* 渐变背景 */
.gradient-bg {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
}

/* 图片遮罩效果 */
.image-overlay {
    position: relative;
    overflow: hidden;
}

.image-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.image-overlay:hover::before {
    opacity: 1;
}

/* 面包屑样式 */
.breadcrumb-item + .breadcrumb-item::before {
    content: '/';
    padding: 0 0.5rem;
    color: var(--text-secondary);
}

/* 表格样式 */
.custom-table {
    border-collapse: collapse;
    width: 100%;
}

.custom-table th,
.custom-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.custom-table th {
    background-color: var(--bg-light);
    font-weight: 600;
}

.custom-table tr:hover {
    background-color: var(--bg-light);
}

/* 响应式图片 */
img {
    max-width: 100%;
    height: auto;
}

/* 返回顶部按钮 */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    transition: all 0.3s ease;
}

#back-to-top:hover {
    transform: translateY(-5px);
}

/* 移动端优化 */
@media (max-width: 768px) {
    .custom-table {
        font-size: 0.875rem;
    }
    
    .custom-table th,
    .custom-table td {
        padding: 0.5rem;
    }
}

/* 动画类 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 标签样式 */
.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.tag-primary {
    background-color: #dbeafe;
    color: #1e40af;
}

.tag-secondary {
    background-color: #e0e7ff;
    color: #4338ca;
}

/* 分隔线样式 */
.divider {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-color), transparent);
    margin: 2rem 0;
}