/* static/css/common.css - 公共样式 */

:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --success: #38b000;
    --danger: #e63946;
    --warning: #ffbe0b;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;
    --border: #e0e6ed;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    --hover-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    --radius: 10px;
    --transition: all 0.3s ease;
}

/* 导航栏样式 */
.site-nav {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 15px 0;
    box-shadow: 0 2px 12px rgba(102, 126, 234, 0.3);
}

.site-nav .nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-nav .nav-logo {
    color: white;
    text-decoration: none;
    font-size: 20px;
    font-weight: 600;
}

.site-nav .nav-links {
    display: flex;
    gap: 20px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav .nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.site-nav .nav-links a:hover {
    opacity: 0.8;
}

/* 页脚样式 */
.site-footer {
    background: var(--dark);
    color: white;
    padding: 30px 20px;
    margin-top: 60px;
}

.site-footer .footer-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.site-footer .footer-links {
    margin-bottom: 15px;
}

.site-footer .footer-links a {
    color: #aaa;
    text-decoration: none;
    margin: 0 10px;
    font-size: 14px;
    transition: var(--transition);
}

.site-footer .footer-links a:hover {
    color: white;
}

.site-footer .copyright {
    color: #888;
    font-size: 14px;
}

/* 卡片网格布局 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 15px;
}

.card-grid .card {
    background: white;
    border-radius: var(--radius);
    padding: 18px 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card-grid .card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
    opacity: 0;
    transition: var(--transition);
}

.card-grid .card:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.card-grid .card:hover::before {
    opacity: 1;
}

.card-grid .card a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-grid .card a i {
    color: var(--primary);
    font-size: 18px;
}

.card-grid .card a:hover {
    color: var(--primary);
}

/* 分组标题 */
.group-title {
    font-size: 20px;
    font-weight: 600;
    margin: 30px 0 15px;
    color: var(--dark);
    padding-left: 10px;
    border-left: 4px solid var(--primary);
}

/* 响应式 */
@media (max-width: 768px) {
    .site-nav .nav-container {
        flex-direction: column;
        gap: 10px;
    }
    
    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(100%, 1fr));
    }
}