/**
 * 乐淘淘二手市场 - 全局响应式样式
 * 适配手机、平板、电脑全设备
 */

/* ==================== 基础响应式断点 ==================== */
/* 超大屏幕 (≥1920px) */
/* 桌面大屏 (1400px - 1919px) */
/* 桌面普通 (1200px - 1399px) */
/* 平板横屏 (992px - 1199px) */
/* 平板竖屏 (768px - 991px) */
/* 手机横屏 (576px - 767px) */
/* 手机竖屏 (<576px) */

/* ==================== 通用容器优化 ==================== */
@media (max-width: 1400px) {
    .container {
        max-width: 1140px;
        padding: 0 15px;
    }
}

@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 540px;
        padding: 0 12px;
    }
}

@media (max-width: 576px) {
    .container {
        max-width: 100%;
        padding: 0 10px;
    }
}

/* ==================== 头部导航优化 ==================== */
@media (max-width: 992px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .search-container {
        max-width: 400px;
        margin: 0 15px;
        order: 3;
        width: 100%;
        margin-top: 10px;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 10px 0;
    }
    
    .header-content {
        flex-direction: column;
        gap: 10px;
    }
    
    .logo {
        width: 100%;
        justify-content: center;
        font-size: 1.2rem;
    }
    
    .search-container {
        max-width: 100%;
        margin: 0;
        width: 100%;
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
        gap: 15px;
    }
    
    .mobile-menu-btn {
        display: block !important;
        position: absolute;
        right: 15px;
        top: 15px;
    }
}

@media (max-width: 576px) {
    .logo span {
        font-size: 1rem;
    }
    
    .nav-item {
        font-size: 0.85rem;
        padding: 5px 8px;
    }
    
    .btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
}

/* ==================== 商品卡片网格优化 ==================== */
@media (min-width: 1200px) {
    .items-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 992px) and (max-width: 1199px) {
    .items-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .items-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .items-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
}

@media (max-width: 576px) {
    .items-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

/* ==================== 商品卡片细节优化 ==================== */
@media (max-width: 768px) {
    .item-card {
        border-radius: 8px;
        overflow: hidden;
    }
    
    .item-image-container {
        height: 180px;
    }
    
    .item-info {
        padding: 12px;
    }
    
    .item-title {
        font-size: 14px;
        line-height: 1.4;
    }
    
    .item-price {
        font-size: 18px;
    }
    
    .item-meta {
        font-size: 12px;
    }
}

@media (max-width: 576px) {
    .item-image-container {
        height: 160px;
    }
    
    .item-title {
        font-size: 13px;
        -webkit-line-clamp: 2;
        line-clamp: 2;
    }
    
    .item-price {
        font-size: 16px;
    }
    
    .item-badge {
        font-size: 0.7rem;
        padding: 3px 8px;
    }
}

/* ==================== 侧边栏优化 ==================== */
@media (max-width: 992px) {
    .filter-sidebar {
        width: 250px;
    }
}

@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }
    
    .filter-sidebar {
        width: 100%;
        position: static;
        margin-bottom: 20px;
    }
    
    .filter-section {
        margin-bottom: 15px;
    }
    
    .filter-options {
        flex-wrap: wrap;
    }
    
    .filter-option {
        width: auto;
        min-width: 120px;
    }
}

@media (max-width: 576px) {
    .filter-option {
        width: 100%;
        min-width: 100%;
    }
    
    .price-inputs {
        flex-direction: column;
        gap: 8px;
    }
}

/* ==================== 详情页优化 ==================== */
@media (max-width: 992px) {
    .item-detail-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .item-images-section {
        width: 100%;
    }
    
    .item-info-section {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .item-detail-header {
        padding: 15px;
    }
    
    .item-title {
        font-size: 1.3rem;
    }
    
    .item-price {
        font-size: 1.5rem;
    }
    
    .seller-info {
        flex-direction: column;
        gap: 15px;
    }
    
    .seller-avatar {
        width: 60px;
        height: 60px;
    }
}

@media (max-width: 576px) {
    .item-title {
        font-size: 1.2rem;
        line-height: 1.3;
    }
    
    .item-price {
        font-size: 1.4rem;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ==================== 图片展示优化 ==================== */
@media (max-width: 768px) {
    .main-image {
        height: 300px;
    }
    
    .thumbnail-list {
        gap: 8px;
    }
    
    .thumbnail-item {
        width: 60px;
        height: 60px;
    }
}

@media (max-width: 576px) {
    .main-image {
        height: 250px;
    }
    
    .thumbnail-item {
        width: 50px;
        height: 50px;
    }
}

/* ==================== 表单优化 ==================== */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .form-group {
        width: 100%;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 10px;
    }
    
    .form-btn {
        width: 100%;
    }
}

@media (max-width: 576px) {
    input[type="text"],
    input[type="email"],
    input[type="tel"],
    input[type="number"],
    textarea,
    select {
        font-size: 16px; /* 防止 iOS 自动缩放 */
    }
}

/* ==================== 按钮优化 ==================== */
@media (max-width: 768px) {
    .btn {
        padding: 10px 18px;
        font-size: 0.9rem;
        touch-action: manipulation;
    }
    
    .btn-sm {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
}

@media (max-width: 576px) {
    .btn {
        padding: 12px 20px;
        min-height: 44px; /* 触摸区域最小尺寸 */
    }
}

/* ==================== 分页优化 ==================== */
@media (max-width: 768px) {
    .pagination {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .page-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
}

@media (max-width: 576px) {
    .pagination {
        gap: 3px;
    }
    
    .page-btn {
        padding: 5px 8px;
        font-size: 0.8rem;
        min-width: 32px;
        text-align: center;
    }
}

/* ==================== 页脚优化 ==================== */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 576px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer {
        padding: 30px 0 15px;
    }
}

/* ==================== 模态框优化 ==================== */
@media (max-width: 768px) {
    .modal-content {
        width: 90%;
        max-width: none;
        margin: 20px auto;
    }
}

@media (max-width: 576px) {
    .modal-content {
        width: 95%;
        margin: 10px auto;
        padding: 15px;
    }
    
    .modal-header {
        padding: 15px;
    }
    
    .modal-body {
        padding: 15px;
    }
}

/* ==================== 分享按钮优化 ==================== */
@media (max-width: 768px) {
    .share-btn-fixed {
        bottom: 70px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
}

@media (max-width: 576px) {
    .share-btn-fixed {
        bottom: 60px;
        right: 15px;
        width: 45px;
        height: 45px;
    }
}

/* ==================== 广告位优化 ==================== */
@media (max-width: 1400px) {
    .sidebar-ads-container {
        display: none;
    }
}

@media (max-width: 768px) {
    .top-banner-ad {
        display: none;
    }
}

/* ==================== 触摸设备优化 ==================== */
@media (hover: none) and (pointer: coarse) {
    /* 增大触摸目标 */
    a, button, input, select, textarea {
        min-height: 44px;
    }
    
    /* 移除悬停效果 */
    .item-card:hover {
        transform: none;
    }
    
    .btn:hover {
        transform: none;
    }
    
    /* 优化点击反馈 */
    .item-card:active {
        transform: scale(0.98);
    }
}

/* ==================== 横屏优化 ==================== */
@media (orientation: landscape) and (max-width: 992px) {
    .header {
        position: static;
    }
    
    .items-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ==================== 打印样式 ==================== */
@media print {
    .header,
    .footer,
    .sidebar,
    .share-btn-fixed,
    .pagination,
    .filter-sidebar {
        display: none !important;
    }
    
    body {
        background: white;
        font-size: 12pt;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
}

/* ==================== 性能优化 ==================== */
/* GPU 加速动画 */
.item-card,
.btn,
.modal-content {
    will-change: transform;
}

/* 减少动画对性能的影响 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}