/*Public/css/header_style.css*/
/* ========== 头部导航 - 移动端汉堡菜单 ========== */
.header {
    background: linear-gradient(135deg, #66a08a 0%, #66a08a 100%);
    color: white;
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 桌面端导航 */
.nav-menu {
    display: flex;
    gap: 25px;
    list-style: none;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
    font-size: 14px;
}

.nav-menu a:hover {
    opacity: 0.8;
}

/* 默认隐藏移动端按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #333;
    padding: 10px;
}

/* 在移动端显示按钮 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    /* 隐藏桌面端菜单 */
    .nav-menu {
        display: none;
    }
}
/* ========== 页脚 ========== */
.footer {
    background: #222;
    color: white;
    padding: 30px 0 20px;
    margin-top: 40px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    display: grid;
    grid-template-columns: 1fr; /* 移动端默认单列 */
    gap: 25px;
    text-align: center;
}

.footer-section h3 {
    margin-bottom: 12px;
    color: #66a08a;
    font-size: 18px;
}

.footer-section p, .footer-section a {
    color: #aaa;
    text-decoration: none;
    line-height: 1.8;
    font-size: 14px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    justify-content: center;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: #333;
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    transition: background 0.3s;
    color: #aaa;
}

/* ========== 汉堡菜单抽屉 ========== */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -280px; /* 初始状态在屏幕外 */
    width: 280px;
    height: 100vh;
    background: #66a08a;
    z-index: 2000; /* 确保在最上层 */
    transition: right 0.3s ease; /* 平滑过渡效果 */
    padding: 50px 20px 20px;
    overflow-y: auto; /* 防止菜单内容超出屏幕时无法滚动 */
}

.mobile-drawer.active {
    right: 0; /* active 时滑入屏幕 */
}

.mobile-drawer-menu {
    list-style: none;
}

.mobile-drawer-menu li {
    margin-bottom: 15px;
}

.mobile-drawer-menu a {
    color: white;
    text-decoration: none;
    font-size: 16px;
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.drawer-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
}

.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1999;
    display: none;
}

.drawer-overlay.active {
    display: block;
}

/* ========== 响应式媒体查询 ========== */
/* 移动端 (≤768px) */
@media (max-width: 768px) {
    /* 显示汉堡菜单 */
    .mobile-menu-btn {
        display: block;
    }
    
    /* 隐藏桌面菜单 */
    .nav-menu {
        display: none;
    }
    
    /* 头部优化 */
    .header-container {
        padding: 0 12px;
    }
    
    .logo {
        font-size: 18px;
    }
    
    /* 面包屑 */
    .breadcrumb {
        padding: 0 12px;
        font-size: 12px;
        margin: 10px auto;
    }
    
    /* 主图高度 */
    .main-image {
        height: 220px; /* 移动端适中高度 */
    }
    
    /* 缩略图导航 */
    .thumb-image {
        width: 55px;
        height: 42px;
    }
    
    /* 信息网格改为2列 */
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    /* 标题字体 */
    .basic-info h1 {
        font-size: 22px;
    }
    
    .subtitle {
        font-size: 15px;
    }
    
    /* 按钮优化 */
    .btn {
        font-size: 15px;
        padding: 14px 16px;
    }
    
    /* 页脚移动端优化 */
    .footer-container {
        padding: 0 12px;
        gap: 20px;
    }
}

/* 平板端 (769px - 991px) */
@media (min-width: 769px) and (max-width: 991px) {
    /* 页脚2列布局 */
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
        text-align: left;
    }
    
    .info-section {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .main-image {
        height: 350px;
    }
}

/* 桌面端 (≥992px) */
@media (min-width: 992px) {
    /* 页脚4列布局 */
    .footer-container {
        grid-template-columns: repeat(4, 1fr);
        gap: 40px;
        text-align: left;
    }
}