/*全局基础样式 */
:root {
    --primary-color: #0056b3;
    --secondary-color: #f8f9fa;
    --accent-color: #ffc107;
    --text-dark: #333;
    --text-light: #666;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: var(--white);
}

/* 容器系统 */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/*按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
}

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

.btn-primary:hover {
    background: #003d82;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.2);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--white);
    color: var(--white);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--primary-color);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* 头部导航 */
header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 3px solid var(--accent-color);
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 28px;
}

/*导航菜单 */
nav ul {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 25px;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    transition: var(--transition);
    padding: 8px 12px;
    border-radius: 4px;
    position: relative;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary-color);
    background: rgba(0, 86, 179, 0.1);
}

nav ul li a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 12px;
    right: 12px;
    height: 2px;
    background: var(--primary-color);
}

/* 语言切换 */
.lang-switch {
    display: flex;
    gap: 5px;
    margin-left: 20px;
    padding-left: 20px;
    border-left: 1px solid #ddd;
}

.lang-btn {
    background: none;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.lang-btn.active,
.lang-btn:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-dark);
    cursor: pointer;
    padding: 5px;
}

/* 面包屑导航 */
.breadcrumb {
    background: linear-gradient(rgba(0, 86, 179, 0.95), rgba(0, 86, 179, 0.95));
    color: var(--white);
    padding: 60px 0;
    margin-bottom: 40px;
    text-align: center;
}

.breadcrumb h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.breadcrumb-nav {
    font-size: 0.95rem;
}

.breadcrumb-nav a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.85;
    transition: var(--transition);
}

.breadcrumb-nav a:hover {
    opacity: 1;
    text-decoration: underline;
}

.breadcrumb-nav span {
    opacity: 0.7;
}

/* 标题样式 */
.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title h2 {
    font-size: 2rem;
    color: var(--primary-color);
    display: inline-block;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--accent-color);
    margin: 0;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 15px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.required::after {
    content: ' *';
    color: #e74c3c;
}

/* 提示信息 */
.alert {
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    font-weight: 500;
    border: 1px solid transparent;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

/* 表格样式 */
.table-container {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.table-header {
    padding: 15px 20px;
    background: var(--secondary-color);
    border-bottom: 1px solid #dee2e6;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

th {
    background: #f8f9fa;
    font-weight: 600;
    color: #495057;
}

tr:hover {
    background: #f8f9fa;
}

/* 徽章样式 */
.badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.badge-new { background: #cce5ff; color: #004085; }
.badge-contacted { background: #d4edda; color: #155724; }
.badge-closed { background: #f8d7da; color: #721c24; }
.badge-published { background: #d4edda; color: #155724; }
.badge-draft { background: #fff3cd; color: #856404; }

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-top: 40px;
}

.page-btn {
    padding: 8px 12px;
    border: 1px solid #ddd;
    background: var(--white);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 5px;
    min-width: 40px;
    text-align: center;
    transition: var(--transition);
}

.page-btn.active,
.page-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.page-btn.disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* 页脚 */
footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 50px 0 20px;
    margin-top: 60px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section {
    flex: 1;
    min-width: 250px;
}

.footer-section h3 {
    color: var(--accent-color);
    margin-bottom: 20px;
    font-size: 1.2rem;
    border-bottom: 2px solid rgba(255, 193, 7, 0.3);
    padding-bottom: 10px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #999;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-container {
        padding: 10px 0;
    }

    nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--white);
        box-shadow: var(--shadow);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s;
    }

    nav.active {
        max-height: 500px;
    }

    nav ul {
        flex-direction: column;
        padding: 20px;
        gap: 15px;
    }

    nav ul li {
        width: 100%;
    }

    nav ul li a {
        display: block;
        width: 100%;
        padding: 12px 15px;
    }

    .lang-switch {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        padding-top: 15px;
        border-top: 1px solid #ddd;
    }

    .mobile-menu-btn {
        display: block;
    }

    .breadcrumb h1 {
        font-size: 1.8rem;
    }

    .section-title h2 {
        font-size: 1.6rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 30px;
    }

    .table-responsive {
        font-size: 0.85rem;
    }

    th, td {
        padding: 8px 10px;
    }
}

/* 工具类 */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.hidden { display: none; }