/* 南斗星 - 公共样式 */

:root {
    --color-primary: #FF6600;
    --color-primary-dark: #e55c00;
    --color-red: #E53E3E;
    --color-bg: #F5F5F5;
    --color-white: #FFFFFF;
    --color-dark: #333333;
    --color-gray: #666666;
    --color-light: #999999;
    --color-border: #E8E8E8;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-dark);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

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

/* 头部导航 */
.header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-box {
    background: var(--color-primary);
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    font-weight: bold;
    font-size: 18px;
}

.city-selector {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    color: var(--color-gray);
}

.city-selector:hover {
    background: #f8f8f8;
}

.city-selector i {
    color: var(--color-primary);
}

/* 搜索框 */
.search-box {
    flex: 1;
    max-width: 500px;
    margin: 0 32px;
    display: flex;
}

.search-box input {
    flex: 1;
    border: 2px solid var(--color-primary);
    border-right: none;
    padding: 8px 16px;
    border-radius: 4px 0 0 4px;
    font-size: 14px;
    outline: none;
}

.search-box button {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 8px 20px;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    font-size: 14px;
}

.search-box button:hover {
    background: var(--color-primary-dark);
}

/* 用户菜单 */
.user-menu {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-post {
    background: var(--color-red);
    color: white;
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
}

.btn-post:hover {
    background: #c53030;
    color: white;
}

.btn-user {
    color: var(--color-gray);
    font-size: 14px;
}

.btn-user:hover {
    color: var(--color-primary);
}

/* 分类导航 */
.category-nav {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
}

.category-nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    gap: 8px;
    height: 48px;
    align-items: center;
    overflow-x: auto;
}

.category-nav a {
    padding: 6px 16px;
    border-radius: 16px;
    font-size: 14px;
    white-space: nowrap;
    transition: all 0.2s;
}

.category-nav a:hover {
    background: #f0f0f0;
}

.category-nav a.active {
    background: var(--color-primary);
    color: white;
}

.category-nav a i {
    margin-right: 4px;
    color: var(--color-primary);
}

.category-nav a.active i {
    color: white;
}

/* 主内容区 */
.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 16px;
}

.main-flex {
    display: flex;
    gap: 24px;
}

/* 侧边栏 */
.sidebar {
    width: 200px;
    flex-shrink: 0;
}

.sidebar-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 16px;
    position: sticky;
    top: 88px;
}

.sidebar-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-title i {
    color: var(--color-primary);
}

/* 筛选器 */
.filter-group {
    margin-bottom: 16px;
}

.filter-label {
    font-size: 14px;
    color: var(--color-gray);
    margin-bottom: 8px;
    display: block;
}

.filter-input {
    width: 100%;
    display: flex;
    gap: 8px;
}

.filter-input input,
.filter-input select {
    flex: 1;
    border: 1px solid var(--color-border);
    padding: 8px;
    border-radius: 4px;
    font-size: 14px;
}

.filter-input input:focus,
.filter-input select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.filter-range {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-range input {
    width: 70px;
    border: 1px solid var(--color-border);
    padding: 6px 8px;
    border-radius: 4px;
    font-size: 14px;
}

.filter-range span {
    color: var(--color-light);
}

.btn-clear {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--color-border);
    background: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    color: var(--color-gray);
}

.btn-clear:hover {
    background: #f8f8f8;
}

/* 信息列表 */
.content {
    flex: 1;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.result-count {
    font-size: 14px;
    color: var(--color-gray);
}

.result-count span {
    color: var(--color-primary);
    font-weight: bold;
}

.sort-btns {
    display: flex;
    gap: 8px;
}

.sort-btn {
    padding: 4px 12px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    background: white;
    color: var(--color-gray);
}

.sort-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

/* 信息卡片网格 */
.listing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.listing-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s;
}

.listing-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.listing-img {
    height: 160px;
    background: #f0f0f0;
    position: relative;
    overflow: hidden;
}

.listing-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.listing-tag {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--color-primary);
    color: white;
    padding: 2px 8px;
    border-radius: 2px;
    font-size: 12px;
}

.listing-body {
    padding: 12px;
}

.listing-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.listing-price {
    font-size: 20px;
    font-weight: bold;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.listing-price.negotiable {
    font-size: 14px;
    font-weight: normal;
}

.listing-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--color-light);
}

.listing-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
}

.pagination button {
    min-width: 36px;
    height: 36px;
    border: 1px solid var(--color-border);
    background: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.pagination button:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination button.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 底部 */
.footer {
    background: var(--color-dark);
    color: #ccc;
    margin-top: 48px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 16px 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.footer h4 {
    color: white;
    margin-bottom: 16px;
    font-size: 16px;
}

.footer ul {
    list-style: none;
}

.footer li {
    margin-bottom: 8px;
    font-size: 14px;
}

.footer li a:hover {
    color: var(--color-primary);
}

.footer-social {
    display: flex;
    gap: 16px;
    font-size: 24px;
}

.footer-bottom {
    border-top: 1px solid #444;
    margin-top: 32px;
    padding-top: 24px;
    text-align: center;
    font-size: 14px;
}

/* 面包屑 */
.breadcrumb {
    font-size: 14px;
    color: var(--color-gray);
    margin-bottom: 16px;
}

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

.breadcrumb span {
    margin: 0 8px;
}

/* 页面标题 */
.page-title {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-title i {
    color: var(--color-primary);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 64px 32px;
    background: white;
    border-radius: 8px;
}

.empty-state i {
    font-size: 64px;
    color: #ddd;
    margin-bottom: 16px;
}

.empty-state p {
    font-size: 16px;
    color: var(--color-gray);
}

/* 响应式 */
@media (max-width: 768px) {
    .listing-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sidebar {
        display: none;
    }

    .header-inner {
        gap: 16px;
    }

    .search-box {
        margin: 0 16px;
    }
}

@media (max-width: 480px) {
    .listing-grid {
        grid-template-columns: 1fr;
    }

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