:root {
    --main: #165DFF;
    --sub: #333333;
    --ok: #00B42A;
    --bg: #F7F8FA;
    --white: #fff;
    --gray: #666;
    --orange: #ff6600;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}
body {
    background: var(--bg);
    color: var(--sub);
    line-height: 1.6;
}
.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
@media (max-width: 1200px) {
    .container { width: 100%; }
}

/* 导航栏 */
:root {
    --main: #ff6600;
    --main-dark: #ff5500;
    --sub: #333333;
    --bg: #F7F8FA;
    --white: #fff;
    --gray: #666;
}

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

body {
    background: var(--bg);
    color: var(--sub);
    line-height: 1.5;
}

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

/* 导航栏 */
.nav {
    background: #fff;
    height: 70px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 99;
}
.nav .container {
    display: flex;
    align-items: center;
    height: 100%;
    justify-content: space-between;
}
/*.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--main);
    cursor: pointer;
}*/

.logo {
        display: flex;
        align-items: center;
        font-size: 24px;
        font-weight: bold;
        cursor: pointer;
    }
    .logo .bid {
        color: #ff6600;
    }
    .logo .stock {
        color: #333;
        margin-left: 2px;
    }


.nav-menu {
    display: flex;
    gap: 30px;
}
.nav-menu a {
    color: var(--sub);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.2s;
}
.nav-menu a:hover {
    color: var(--main);
}
.nav-menu a.active {
    color: var(--main);
    font-weight: 600;
    border-bottom: 2px solid var(--main);
    padding-bottom: 2px;
}

/* 用户区域 */
.nav-user-area {
    display: flex;
    align-items: center;
}
.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}
.user-name {
    color: #165DFF;
    font-size: 14px;
}
.user-name span {
    color: #ff6600;
    font-weight: bold;
}
.logout-btn {
    background: #ff6600;
    color: white;
    border: none;
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}
.logout-btn:hover {
    background: #e55a00;
}
.login-link, .register-link {
    color: #165DFF;
    text-decoration: none;
    font-size: 14px;
    margin-left: 10px;
}
.login-link:hover, .register-link:hover {
    text-decoration: underline;
}

/* 底部 */
.footer {
    background: var(--sub);
    color: rgba(255,255,255,0.8);
    padding: 20px 0;
    font-size: 13px;
    text-align: center;
    margin-top: 40px;
}

/* 广告栏 */
.hero-ad {
    background: #fff5cc;
    padding: 12px 0;
    text-align: center;
    font-size: 16px;
    color: #d45b00;
}

/* 搜索栏 */
.search-bar {
    background: #fff;
    padding: 30px 20px;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 20px;
}
.search-bar input {
    padding: 12px 18px;
    border-radius: 30px;
    border: 1px solid #eee;
    width: 420px;
    max-width: 80%;
    outline: none;
    font-size: 14px;
}
.search-bar button {
    padding: 12px 26px;
    background: var(--orange);
    color: #fff;
    border: none;
    border-radius: 30px;
    margin-left: 8px;
    cursor: pointer;
    font-size: 14px;
}

/* 双栏布局 */
.two-column {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.inventory-section {
    flex: 2;
    background: #fff;
    border-radius: 8px;
    padding: 20px;
}
.bid-section {
    flex: 1;
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    min-height: 400px;
}

/* 表格 */
.table-wrapper {
    overflow-x: auto;
}
.inventory-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 14px;
}
.inventory-table th {
    background: var(--bg);
    padding: 12px 10px;
    text-align: left;
    font-weight: 600;
    color: var(--sub);
}
.inventory-table td {
    padding: 12px 10px;
    border-bottom: 1px solid #f5f5f5;
}
.inventory-table tr:hover {
    background: #f9f9f9;
    cursor: pointer;
}
.status-badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
}

/* 分页 */
.pagination {
    text-align: center;
    padding: 10px 0;
}
.pagination a {
    display: inline-block;
    padding: 6px 12px;
    margin: 0 4px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    color: #333;
}
.pagination a:hover {
    background: #165DFF;
    color: #fff;
    border-color: #165DFF;
}
.pagination .current {
    background: #165DFF;
    color: #fff;
    padding: 6px 12px;
    margin: 0 4px;
    border-radius: 4px;
}
.pagination .disabled {
    padding: 6px 12px;
    margin: 0 4px;
    color: #999;
}

/* ========== 响应式布局代码 ========== */

/* 平板设备 (宽度 ≤ 1024px) */
@media screen and (max-width: 1024px) {
    .container {
        width: 95%;
        padding: 0 15px;
    }
    
    .main-container {
        width: 95%;
        margin: 20px auto;
    }
    
    /* 导航菜单 */
    .nav-menu {
        gap: 20px;
    }
    
    .nav-menu a {
        font-size: 14px;
    }
    
    .logo {
        font-size: 22px;
    }
    
    /* 搜索栏 */
    .search-bar input {
        width: 350px;
    }
    
    /* 双栏布局保持并排但缩小间距 */
    .two-column {
        gap: 15px;
    }
    
    .inventory-section,
    .bid-section {
        padding: 15px;
    }
    
    /* 表格字体微调 */
    .inventory-table th,
    .inventory-table td {
        padding: 10px 8px;
        font-size: 13px;
    }
}

/* 手机设备 (宽度 ≤ 768px) */
@media screen and (max-width: 768px) {
    .container {
        width: 100%;
        padding: 0 12px;
    }
    
    .main-container {
        width: 100%;
        margin: 15px auto;
        padding: 0 12px;
    }
    
    /* 导航栏响应式 - 菜单换行或滚动 */
    .nav {
        height: auto;
        min-height: 60px;
        padding: 10px 0;
    }
    
    .nav .container {
        flex-wrap: wrap;
        justify-content: space-between;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .nav-menu {
        order: 3;
        width: 100%;
        gap: 12px;
        justify-content: center;
        flex-wrap: wrap;
        margin-top: 10px;
        padding-top: 10px;
        border-top: 1px solid #eee;
    }
    
    .nav-menu a {
        font-size: 13px;
        padding: 5px 0;
    }
    
    .nav-user-area {
        order: 2;
    }
    
    .user-info {
        gap: 8px;
    }
    
    .user-name {
        font-size: 12px;
    }
    
    .logout-btn {
        padding: 4px 10px;
        font-size: 11px;
    }
    
    .login-link, .register-link {
        font-size: 12px;
        margin-left: 8px;
    }
    
    /* 广告栏 */
    .hero-ad {
        padding: 10px 0;
        font-size: 14px;
    }
    
    /* 搜索栏 */
    .search-bar {
        padding: 20px 15px;
    }
    
    .search-bar input {
        width: 100%;
        max-width: 100%;
        padding: 10px 15px;
        font-size: 14px;
        margin-bottom: 10px;
    }
    
    .search-bar button {
        padding: 10px 20px;
        font-size: 14px;
        margin-left: 0;
        width: 100%;
        max-width: 200px;
    }
    
    /* 双栏布局 - 改为垂直排列 */
    .two-column {
        flex-direction: column;
        gap: 20px;
    }
    
    .inventory-section,
    .bid-section {
        flex: auto;
        padding: 15px;
    }
    
    .bid-section {
        min-height: auto;
    }
    
    /* 表格横向滚动 */
    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .inventory-table {
        min-width: 600px;
        font-size: 13px;
    }
    
    .inventory-table th,
    .inventory-table td {
        padding: 10px 8px;
        white-space: nowrap;
    }
    
    /* 分页 */
    .pagination a,
    .pagination .current,
    .pagination .disabled {
        padding: 5px 10px;
        margin: 0 3px;
        font-size: 12px;
    }
    
    /* 底部 */
    .footer {
        padding: 15px 0;
        font-size: 12px;
        margin-top: 30px;
    }
}

/* 超小屏幕设备 (宽度 ≤ 480px) */
@media screen and (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .main-container {
        padding: 0 10px;
        margin: 10px auto;
    }
    
    /* 导航进一步精简 */
    .logo {
        font-size: 18px;
    }
    
    .nav-menu {
        gap: 8px;
    }
    
    .nav-menu a {
        font-size: 11px;
    }
    
    .nav-user-area .user-name {
        display: none;
    }
    
    .logout-btn {
        padding: 4px 8px;
        font-size: 10px;
    }
    
    .login-link, .register-link {
        font-size: 11px;
        margin-left: 6px;
    }
    
    /* 广告栏 */
    .hero-ad {
        padding: 8px 0;
        font-size: 12px;
    }
    
    /* 搜索栏 */
    .search-bar {
        padding: 15px 12px;
    }
    
    .search-bar input {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .search-bar button {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    /* 板块内边距 */
    .inventory-section,
    .bid-section {
        padding: 12px;
    }
    
    /* 表格文字缩小 */
    .inventory-table {
        font-size: 12px;
        min-width: 550px;
    }
    
    .inventory-table th,
    .inventory-table td {
        padding: 8px 6px;
    }
    
    /* 分页 */
    .pagination a,
    .pagination .current,
    .pagination .disabled {
        padding: 4px 8px;
        margin: 0 2px;
        font-size: 11px;
    }
    
    /* 底部 */
    .footer {
        padding: 12px 0;
        font-size: 11px;
        margin-top: 20px;
    }
}

/* 横屏模式适配 (手机横屏) */
@media screen and (max-height: 500px) and (orientation: landscape) {
    .nav {
        position: static;
    }
    
    .search-bar {
        padding: 15px 20px;
    }
    
    .two-column {
        gap: 15px;
    }
    
    .bid-section {
        min-height: 300px;
    }
}

/* 大屏幕优化 (≥1400px) */
@media screen and (min-width: 1400px) {
    .container {
        width: 1320px;
    }
    
    .main-container {
        width: 1320px;
    }
}

/* 汉堡菜单支持（如需折叠菜单，取消下方注释） */
/*
@media screen and (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    .nav-menu.active {
        display: flex;
    }
    .menu-toggle {
        display: block;
    }
}
*/