/**
 * 二手市场移动端样式
 * 原生 App 质感：底部 Tab · 密集卡片 · 紧凑不留白 · 全屏沉浸
 * 断点：≤768px 接管桌面布局
 */

@media (max-width: 768px) {
    :root {
        --mk-radius: 8px;
        --mk-radius-sm: 4px;
    }

    .mk-wrap { padding: 0 12px; }

    /* ===== 顶部导航：紧凑单行 ===== */
    .mk-topbar-inner {
        height: 48px;
        gap: 10px;
        padding: 0 12px;
    }
    .mk-logo { font-size: 16px; }
    .mk-search { max-width: none; }
    .mk-search input {
        height: 32px;
        font-size: 12px;
        padding: 0 12px 0 34px;
        border-radius: 16px;
    }
    .mk-search svg { left: 10px; width: 14px; height: 14px; }
    .mk-nav { gap: 2px; }
    .mk-nav a { display: none; }
    .mk-nav .mk-btn-publish {
        padding: 6px 12px;
        font-size: 12px;
        border-radius: 14px;
    }

    /* ===== 分类标签：横向滚动，更紧凑 ===== */
    .mk-cats-inner { padding: 6px 12px; gap: 2px; }
    .mk-cat { padding: 5px 11px; font-size: 12px; }

    /* ===== 主布局：取消双栏，改单列全屏 ===== */
    .mk-main {
        grid-template-columns: 1fr;
        min-height: calc(100vh - 104px - 56px);
        padding-bottom: 56px;
    }
    .mk-list-col {
        border-right: none;
        overflow-y: visible;
    }
    .mk-detail-col {
        position: fixed;
        inset: 0;
        z-index: 200;
        height: 100vh;
        top: 0;
        border-radius: 0;
        transform: translateX(100%);
        transition: transform .28s var(--mk-ease);
        display: block !important;
    }
    .mk-detail-col.show {
        transform: translateX(0);
    }
    .mk-detail-col.empty { display: none !important; }

    /* 详情页顶部返回栏 */
    .mk-detail-back {
        display: flex !important;
        align-items: center;
        gap: 8px;
        height: 48px;
        padding: 0 12px;
        border-bottom: 1px solid var(--mk-line);
        background: var(--mk-surface);
        position: sticky;
        top: 0;
        z-index: 10;
    }
    .mk-detail-back svg { width: 20px; height: 20px; }
    .mk-detail-back .title { font-size: 15px; font-weight: 600; flex: 1; }

    /* ===== 筛选条：横向滚动 ===== */
    .mk-filters {
        padding: 8px 12px;
        gap: 8px;
        overflow-x: auto;
        flex-wrap: nowrap;
        scrollbar-width: none;
    }
    .mk-filters::-webkit-scrollbar { display: none; }
    .mk-filter-group { flex-shrink: 0; }
    .mk-sort { margin-left: 0; flex-shrink: 0; }
    .mk-chip { padding: 3px 8px; font-size: 11px; }

    /* ===== 商品网格：双列密集 ===== */
    .mk-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        padding: 10px 12px;
    }
    .mk-card { border-radius: var(--mk-radius); }
    .mk-card-img { aspect-ratio: 1; }
    .mk-card-body { padding: 8px 10px 10px; }
    .mk-card-title { font-size: 13px; line-height: 1.35; margin-bottom: 4px; }
    .mk-card-price .now { font-size: 16px; }
    .mk-card-price .orig { font-size: 11px; }
    .mk-card-price .discount { font-size: 10px; padding: 0 3px; }
    .mk-card-meta { font-size: 10px; gap: 4px; }
    .mk-grade-tag { font-size: 10px; padding: 1px 6px; top: 6px; left: 6px; }
    .mk-card-distance { font-size: 10px; bottom: 6px; right: 6px; padding: 1px 5px; }

    /* ===== 详情面板：全屏沉浸 ===== */
    .mk-detail { padding: 0; }
    .mk-detail-gallery {
        flex-direction: column;
        margin-bottom: 0;
    }
    .mk-detail-gallery img.main {
        width: 100%;
        aspect-ratio: 1;
    }
    .mk-detail-content { padding: 16px; }
    .mk-detail-title { font-size: 16px; margin-bottom: 8px; }
    .mk-detail-price {
        padding: 12px;
        margin-bottom: 12px;
    }
    .mk-detail-price .now { font-size: 24px; }
    .mk-detail-attrs {
        grid-template-columns: 1fr 1fr;
        gap: 8px 12px;
        padding: 12px 0;
        margin-bottom: 12px;
    }
    .mk-attr { font-size: 12px; }
    .mk-detail-desc { font-size: 13px; margin-bottom: 16px; }
    .mk-detail-seller { padding: 12px; margin-bottom: 12px; }
    .mk-detail-seller img { width: 36px; height: 36px; }
    .mk-detail-actions {
        position: fixed;
        bottom: 56px;
        left: 0;
        right: 0;
        margin: 0;
        padding: 10px 12px;
        background: var(--mk-surface);
        border-top: 1px solid var(--mk-line);
        z-index: 50;
    }
    .mk-btn { height: 38px; font-size: 13px; }

    /* ===== 底部 Tab 导航 ===== */
    .mk-tabbar {
        display: flex !important;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 56px;
        background: var(--mk-surface);
        border-top: 1px solid var(--mk-line);
        z-index: 100;
        padding-bottom: env(safe-area-inset-bottom);
    }
    .mk-tabbar a {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        font-size: 10px;
        color: var(--mk-ink-3);
        transition: color var(--mk-dur) var(--mk-ease);
    }
    .mk-tabbar a.active { color: var(--mk-brand); }
    .mk-tabbar a svg { width: 22px; height: 22px; }
    .mk-tabbar a .label { font-size: 10px; }
    .mk-tabbar a .badge {
        position: absolute;
        top: 6px;
        right: 50%;
        margin-right: -20px;
        min-width: 16px;
        height: 16px;
        padding: 0 4px;
        background: var(--mk-danger);
        color: #fff;
        border-radius: 8px;
        font-size: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* ===== 表单：全屏，紧凑 ===== */
    .mk-form { padding: 16px 12px; }
    .mk-form-row { grid-template-columns: 1fr; gap: 0; }
    .mk-img-upload { grid-template-columns: repeat(3, 1fr); }

    /* ===== 订单列表：紧凑 ===== */
    .mk-orders { padding: 12px; }
    .mk-order-card { padding: 12px; }
    .mk-order-head { margin-bottom: 10px; padding-bottom: 10px; }
    .mk-order-item img { width: 48px; height: 48px; }
    .mk-order-foot .mk-btn { height: 30px; font-size: 12px; padding: 0 12px; }

    /* ===== 估价器 ===== */
    .mk-tradein { padding: 16px 12px; }
    .mk-tradein-step { padding: 16px; }
    .mk-tradein-result { padding: 24px 16px; }
    .mk-tradein-result .amount { font-size: 32px; }

    /* ===== 弹层：底部抽屉式 ===== */
    .mk-modal-mask { align-items: flex-end; padding: 0; }
    .mk-modal {
        max-width: 100%;
        max-height: 85vh;
        border-radius: 16px 16px 0 0;
        animation: mk-sheet-in .3s var(--mk-ease);
    }
    @keyframes mk-sheet-in {
        from { transform: translateY(100%); }
    }

    /* ===== 后台表格：横向滚动 ===== */
    .mk-admin-wrap { padding: 12px; }
    .mk-admin-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .mk-admin-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .mk-stat-card { padding: 12px; }
    .mk-stat-card .value { font-size: 20px; }

    /* 隐藏桌面专属元素 */
    .mk-desktop-only { display: none !important; }
}

/* 桌面端：隐藏移动专属元素 */
@media (min-width: 769px) {
    .mk-tabbar { display: none !important; }
    .mk-detail-back { display: none !important; }
    .mk-mobile-only { display: none !important; }
}

/* 移动端：市集首页改为单列，详情抽屉隐藏（卡片点击跳转独立详情页） */
@media (max-width: 768px) {
    .mk-main { grid-template-columns: 1fr; min-height: 0; }
    .mk-detail-col { display: none !important; }
    .mk-list-col { width: 100%; }
    .mk-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; padding: 12px; }
    .mk-messages { flex-direction: column; }
    .mk-msg-list { width: 100%; }
    .mk-msg-conv { width: 100%; min-height: 50vh; }
}