/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

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

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

.btn-login {
    background: white !important;
    color: #667eea !important;
    padding: 0.5rem 1.5rem !important;
    border-radius: 25px !important;
    cursor: pointer !important;
    font-weight: bold !important;
    transition: transform 0.3s !important;
    border: none !important;
    display: inline-block !important;
    text-decoration: none !important;
    font-size: 1rem !important;
    line-height: 1.5 !important;
}

.btn-login:hover {
    transform: scale(1.05) !important;
    text-decoration: none !important;
    color: #667eea !important;
}

.nav-menu .btn-login {
    background: white !important;
    color: #667eea !important;
    padding: 0.5rem 1.5rem !important;
    border-radius: 25px !important;
    cursor: pointer !important;
    font-weight: bold !important;
    border: none !important;
    font-size: 1rem !important;
}

/* 英雄区 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 20px;
    text-align: center;
    margin-bottom: 50px;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: slideDown 0.8s ease-out;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    animation: slideUp 0.8s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 按钮 */
.btn-primary {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    font-weight: bold;
    width: 100%;
    display: block;
    margin: 0 auto;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(245, 87, 108, 0.3);
}

/* 分类信息 */
.categories {
    padding: 60px 20px;
    background: white;
    margin-bottom: 50px;
}

.categories h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.category-card {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
    border-color: #667eea;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.category-card p {
    color: #666;
}

/* 分类页面头部 */
.category-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 20px;
    text-align: center;
    margin-bottom: 30px;
}

.category-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.category-header p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.category-header .btn-primary {
    display: inline-block;
    width: auto;
    min-width: 160px;
}

.hero-content .btn-primary {
    display: inline-block;
    width: auto;
    min-width: 160px;
}

/* 筛选和搜索 */
.filter-section {
    background: white;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.search-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.search-bar input {
    flex: 1;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.search-bar button {
    padding: 0.8rem 1.5rem;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.search-bar button:hover {
    background: #764ba2;
}

.filter-options {
    display: flex;
    gap: 1rem;
}

.filter-options select {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
}

/* 信息网格 */
.info-section {
    padding: 2rem;
    flex: 1;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.info-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s;
    cursor: pointer;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.info-card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem;
}

.info-card-header h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.info-card-body {
    padding: 1.5rem;
}

.info-card-body p {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.info-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-top: 1px solid #e0e0e0;
    background: #f9f9f9;
}

.info-price {
    font-size: 1.3rem;
    color: #f5576c;
    font-weight: bold;
}

.info-location {
    color: #999;
    font-size: 0.9rem;
}

/* 最新信息 */
.latest-info {
    padding: 60px 20px;
    background: white;
    margin-bottom: 50px;
}

.latest-info h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.info-list {
    display: grid;
    gap: 2rem;
}

.info-item {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 1.5rem;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.info-item:hover {
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transform: translateY(-5px);
}

.info-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.category-tag {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
}

.category-tag.vehicle {
    background: #f5576c;
}

.category-tag.dating {
    background: #f093fb;
}

.category-tag.recruitment {
    background: #4facfe;
}

.time {
    color: #999;
    font-size: 0.9rem;
}

.info-item h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.info-item p {
    color: #666;
    margin-bottom: 1rem;
}

.info-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.price {
    font-size: 1.3rem;
    color: #f5576c;
    font-weight: bold;
}

.location {
    color: #999;
}

/* 关于我们 */
.about {
    padding: 60px 20px;
    background: #f9f9f9;
    margin-bottom: 50px;
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text h3 {
    font-size: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    color: #667eea;
}

.about-text p {
    line-height: 1.8;
    color: #666;
    margin-bottom: 1rem;
}

.about-text ul {
    list-style: none;
    margin-left: 1rem;
}

.about-text li {
    padding: 0.5rem 0;
    color: #666;
    font-size: 1.1rem;
}

/* 联系我们 */
.contact {
    padding: 60px 20px;
    background: white;
    margin-bottom: 50px;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background: #f9f9f9;
    border-radius: 10px;
}

.contact-item h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #667eea;
}

.contact-item p {
    color: #666;
}

/* 页脚 */
.footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: auto;
}

.footer a {
    color: #667eea;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 95%;
    max-width: 600px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    animation: slideIn 0.3s;
    max-height: 90vh;
    overflow-y: auto;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

.modal-content .btn-primary {
    width: 100%;
    display: block;
    margin: 1rem auto 0;
}

.modal-content .form-group {
    margin-bottom: 1rem;
}

/* 标签页 */
.modal-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid #e0e0e0;
}

.tab-btn {
    background: none;
    border: none;
    padding: 1rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    color: #999;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s;
}

.tab-content h2 {
    margin-bottom: 1.5rem;
    color: #333;
}

/* 表单 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #333;
    white-space: nowrap;
    gap: 0.3rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
}

.radio-group {
    display: flex;
    gap: 2rem;
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0;
}

.radio-group input[type="radio"] {
    width: auto;
}

.form-tip {
    text-align: center;
    margin-top: 1rem;
    color: #666;
}

.form-tip a {
    color: #667eea;
    text-decoration: none;
    cursor: pointer;
}

.form-tip a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .categories h2,
    .latest-info h2,
    .about h2,
    .contact h2,
    .category-header h1 {
        font-size: 1.8rem;
    }

    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
        margin: 20% auto;
    }

    .search-bar {
        flex-direction: column;
    }

    .filter-options {
        flex-direction: column;
    }
}