/* 响应式设计 */

/* 移动设备导航 */
.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 20px;
    cursor: pointer;
    z-index: 100;
}

.mobile-nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-dim);
    transition: all 0.3s ease;
}

.mobile-nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动导航菜单 */
.mobile-nav {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 80%;
    height: calc(100vh - 70px);
    background: var(--bg-deep);
    backdrop-filter: blur(15px);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    padding: 24px 0;
    border-left: 1px solid var(--border-line);
}

.mobile-nav.active {
    right: 0;
}

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

.mobile-nav-item {
    margin-bottom: 16px;
}

.mobile-nav-item a {
    display: block;
    padding: 14px 20px;
    color: var(--text-main);
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-item:hover a {
    background: rgba(0, 229, 255, 0.1);
    color: var(--primary);
    padding-left: 25px;
}

.mobile-nav-item.active a {
    background: linear-gradient(to right, rgba(0, 229, 255, 0.1), transparent);
    color: var(--primary);
    border-left: 4px solid var(--primary);
    font-weight: 700;
}

/* 响应式布局 */
@media (max-width: 768px) {
    /* 显示移动导航切换按钮 */
    .mobile-nav-toggle {
        display: flex;
    }
    
    /* 隐藏桌面导航 */
    .main-nav {
        display: none;
    }
    
    /* 调整页面头部 */
    .page-header {
        padding: 0 12px;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .page-title {
        font-size: 16px;
        flex: 1;
    }
    
    .header-actions {
        display: flex;
        gap: 8px;
        align-items: center;
        margin-left: auto;
    }

    .user-info {
        padding: 4px 8px;
        font-size: 11px;
    }

    .user-info span:first-child {
        display: none; /* 移动端隐藏“管理员：”字样 */
    }
    
    .btn {
        padding: 6px 10px;
        font-size: 11px;
        min-width: 60px;
    }
    
    /* 调整页面内容 */
    .page-content {
        padding: 12px;
    }
    
    /* 调整卡片 */
    .page-card {
        padding: 16px;
        margin-bottom: 16px;
    }
    
    /* 调整仪表盘布局 */
    .dashboard-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
        gap: 12px;
        padding: 8px;
        height: auto;
    }
    
    .traffic-heatmap {
        grid-row: 1 / 2;
        grid-column: 1 / 2;
        height: 250px;
        min-height: 250px;
    }
    
    .chart-card {
        height: 250px;
        min-height: 250px;
        padding: 12px;
    }
    
    .chart-title {
        font-size: 14px;
        margin-bottom: 8px;
    }
    
    .chart-content {
        height: calc(100% - 24px);
    }
    
    /* 调整实时路况布局 */
    .realtime-container {
        flex-direction: column;
        gap: 16px;
    }
    
    .map-section {
        height: 300px;
    }
    
    .data-section {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .status-card {
        flex: 1 1 calc(50% - 8px);
        min-width: 140px;
    }
    
    /* 调整拥堵预警布局 */
    .alert-container {
        flex-direction: column;
        gap: 16px;
    }
    
    .alert-map {
        height: 300px;
    }
    
    /* 调整流量分析布局 */
    .filter-panel {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 16px;
    }
    
    .chart-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    /* 调整历史数据布局 */
    .history-filter {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .history-table {
        font-size: 14px;
    }
    
    .history-table th,
    .history-table td {
        padding: 8px;
    }
    
    /* 调整系统管理布局 */
    .manage-tabs {
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .manage-tab {
        padding: 8px 16px;
    }
    
    .form-group {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .form-group label {
        width: 100%;
        text-align: left;
        margin-right: 0;
    }
    
    .form-actions {
        margin-left: 0;
    }
    
    /* 修复移动端点击事件 */
    button, a, .mobile-nav-toggle {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
    
    /* 确保按钮可点击 */
    .btn {
        cursor: pointer;
        user-select: none;
    }
}

@media (max-width: 1100px) {
    .main-nav {
        margin: 0 10px;
    }
    
    .nav-item a {
        padding: 6px 10px;
        font-size: 13px;
    }
    
    .nav-menu {
        gap: 8px;
    }
}

/* 平板设备适配 */
@media (min-width: 769px) and (max-width: 960px) {
    .nav-item a {
        padding: 6px 8px;
        font-size: 12px;
    }
    
    .user-info {
        padding: 4px 10px;
        font-size: 12px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    
    .dashboard-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }
    
    .traffic-heatmap {
        grid-row: 1 / 2;
        grid-column: 1 / 2;
        height: 400px;
    }
    
    .realtime-container {
        flex-direction: column;
    }
    
    .map-section {
        height: 400px;
    }
    
    .chart-grid {
        grid-template-columns: 1fr;
    }
}