/* ============================================================
   AI 资源交易系统 · 前台样式（单文件，无第三方依赖）
   风格：教育向简约，主色 #2B6CB0
   ============================================================ */
:root {
    --primary: #2B6CB0;
    --primary-dark: #1F4E85;
    --bg: #F6F8FB;
    --text: #1A202C;
    --text-muted: #5A6472;
    --border: #E2E8F0;
    --price: #E53E3E;
    --success: #38A169;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(26, 32, 44, 0.06);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.65;
    -webkit-text-size-adjust: 100%;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; border: 0; }

.wrap {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ---------- 顶部 ---------- */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 30;
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 20px;
    min-height: 60px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 17px;
    color: var(--text);
    white-space: nowrap;
}

.logo img { width: 28px; height: 28px; }
.logo span { color: var(--text); }

.top-nav {
    display: flex;
    gap: 4px;
    flex: 1;
    overflow-x: auto;
}

.top-nav a {
    padding: 6px 12px;
    border-radius: var(--radius);
    color: var(--text-muted);
    font-size: 14px;
    white-space: nowrap;
}

.top-nav a:hover { background: var(--bg); color: var(--primary); }
.top-nav a.active { background: #EAF2FB; color: var(--primary); font-weight: 600; }

.header-user {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    white-space: nowrap;
}

.header-user .user-name { color: var(--text-muted); }

/* ---------- 公告 ---------- */
.announce {
    background: #FFF8E6;
    border-bottom: 1px solid #F6E05E;
    color: #7B5E00;
    font-size: 13px;
}

.announce .wrap { padding: 8px 16px; }

/* ---------- 主体 ---------- */
.main { padding: 24px 0 80px; min-height: 60vh; }

.page-head { margin-bottom: 18px; }
.page-head h1 { font-size: 22px; margin: 0 0 6px; }
.page-head p { margin: 0; color: var(--text-muted); font-size: 14px; }

.card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
}

.card + .card { margin-top: 16px; }

.card-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

/* ---------- 表单 ---------- */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; margin-bottom: 6px; color: var(--text); font-weight: 600; }

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="tel"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    outline: none;
    transition: border-color .15s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--primary); }

.form-tip { font-size: 12px; color: var(--text-muted); margin-top: 6px; }

.form-row { display: flex; gap: 10px; align-items: center; }
.form-row input { flex: 1; }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-block;
    padding: 9px 18px;
    font-size: 14px;
    font-family: inherit;
    line-height: 1.4;
    text-align: center;
    border: 1px solid transparent;
    border-radius: var(--radius);
    background: #fff;
    color: var(--text);
    cursor: pointer;
    transition: background .15s, border-color .15s;
}

.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-ghost { border-color: var(--border); color: var(--text-muted); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-block { display: block; width: 100%; padding: 11px 18px; font-size: 15px; }
.btn[disabled] { opacity: .6; cursor: not-allowed; }
.btn-sm { padding: 5px 12px; font-size: 13px; }

/* ---------- 提示 ---------- */
.alert {
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 16px;
    border: 1px solid transparent;
}

.alert-error { background: #FEF2F2; border-color: #FEB2B2; color: #9B2C2C; }
.alert-success { background: #F0FFF4; border-color: #9AE6B4; color: #22543D; }
.alert-info { background: #EBF8FF; border-color: #90CDF4; color: #2A4365; }

/* ---------- 登录/注册页 ---------- */
.auth-page { max-width: 420px; margin: 0 auto; padding-top: 10px; }
.auth-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px 20px; }
.auth-box h1 { font-size: 20px; margin: 0 0 6px; }
.auth-box .auth-sub { color: var(--text-muted); font-size: 13px; margin: 0 0 18px; }
.auth-foot { text-align: center; font-size: 13px; color: var(--text-muted); margin-top: 16px; }
.auth-foot a { margin: 0 4px; }

.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tabs button {
    flex: 1;
    padding: 10px 0;
    font-size: 15px;
    font-family: inherit;
    color: var(--text-muted);
    background: none;
    border: 0;
    border-bottom: 2px solid transparent;
    cursor: pointer;
}
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab-panel[hidden] { display: none; }

.captcha-row { display: flex; gap: 8px; align-items: center; }
.captcha-row img { height: 42px; width: 120px; border: 1px solid var(--border); border-radius: var(--radius); cursor: pointer; }

/* ---------- 个人中心 ---------- */
.info-list { margin: 0; }
.info-list .row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 11px 0;
    border-bottom: 1px dashed var(--border);
    font-size: 14px;
}
.info-list .row:last-child { border-bottom: 0; }
.info-list .label { color: var(--text-muted); }
.info-list .value { color: var(--text); text-align: right; word-break: break-all; }

.badge {
    display: inline-block;
    padding: 1px 8px;
    font-size: 12px;
    border-radius: 10px;
    background: #EAF2FB;
    color: var(--primary);
}
.badge-success { background: #F0FFF4; color: var(--success); }
.badge-muted { background: #F1F3F6; color: var(--text-muted); }

/* ---------- 说明列表（WorkBuddy 绑定页） ---------- */
.help-list { margin: 6px 0 0; padding-left: 18px; }
.help-list li { color: var(--text-muted); font-size: 13px; line-height: 1.9; }

/* ---------- 页脚 ---------- */
.site-footer {
    border-top: 1px solid var(--border);
    background: #fff;
    padding: 20px 0;
    font-size: 13px;
    color: var(--text-muted);
}
.site-footer .foot-row { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--primary); }

.mobile-nav { display: none; }

/* ---------- 响应式：≤768px ---------- */
@media (max-width: 768px) {
    body { font-size: 14px; }
    .header-inner { min-height: 54px; gap: 10px; }
    .top-nav { display: none; }
    .logo { font-size: 15px; }
    .main { padding: 16px 0 76px; }
    .card { padding: 16px; }
    .page-head h1 { font-size: 18px; }
    .auth-page { padding-top: 0; }

    .mobile-nav {
        display: flex;
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 40;
        background: #fff;
        border-top: 1px solid var(--border);
        padding-bottom: env(safe-area-inset-bottom, 0);
    }
    .mobile-nav a {
        flex: 1;
        text-align: center;
        padding: 10px 0 8px;
        font-size: 13px;
        color: var(--text-muted);
    }
    .mobile-nav a.active { color: var(--primary); font-weight: 600; }
}

/* ============================================================
   商城前台（阶段 4）：分类筛选 / 商品卡片 / 详情 / 订单 / 帮助
   ============================================================ */
.crumb { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; word-break: break-all; }
.crumb a { color: var(--text-muted); }
.crumb a:hover { color: var(--primary); }

.cat-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.chip {
    display: inline-block;
    padding: 5px 14px;
    font-size: 13px;
    color: var(--text-muted);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 999px;
}
.chip:hover { color: var(--primary); border-color: var(--primary); }
.chip.active { background: #EAF2FB; border-color: var(--primary); color: var(--primary); font-weight: 600; }

.goods-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.goods-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    color: var(--text);
}
.goods-card:hover { border-color: var(--primary); color: var(--text); }
.goods-cover { display: block; width: 100%; height: 150px; object-fit: cover; background: var(--bg); }
.goods-body { padding: 12px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.goods-title {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.goods-summary {
    margin: 0;
    font-size: 12px;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.goods-foot { margin-top: auto; display: flex; align-items: baseline; gap: 6px; flex-wrap: wrap; }
.price { color: var(--price); font-weight: 700; }
.price-original { color: var(--text-muted); font-size: 12px; text-decoration: line-through; }
.sales { margin-left: auto; font-size: 12px; color: var(--text-muted); }

.no-img { display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 12px; }
.empty { text-align: center; color: var(--text-muted); padding: 32px 16px; }

.pager { display: flex; justify-content: center; align-items: center; gap: 6px; margin: 20px 0 0; flex-wrap: wrap; }
.pager-link {
    min-width: 34px;
    padding: 5px 10px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.pager-link:hover { color: var(--primary); border-color: var(--primary); }
.pager-link.current { background: var(--primary); border-color: var(--primary); color: #fff; }
.pager-link.disabled { opacity: .5; }

/* ---------- 商品详情 ---------- */
.detail-card { padding: 18px; }
.detail-top { display: flex; gap: 18px; }
.detail-cover {
    width: 300px;
    max-width: 45%;
    height: 210px;
    object-fit: cover;
    border-radius: var(--radius);
    background: var(--bg);
    flex: none;
}
.detail-info { flex: 1; min-width: 0; }
.detail-title { margin: 0 0 8px; font-size: 20px; line-height: 1.4; word-break: break-word; }
.detail-summary { margin: 0 0 12px; color: var(--text-muted); font-size: 13px; }
.detail-price { display: flex; align-items: baseline; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.detail-price .price { font-size: 26px; }
.gain-type { margin: 0 0 10px; font-size: 13px; color: var(--text-muted); }
.gain-list { margin: 0; padding-left: 18px; font-size: 14px; }
.gain-list li { margin-bottom: 6px; }
.gain-tip { color: var(--text-muted); font-size: 12px; margin-left: 6px; }
.notice-text { font-size: 14px; color: var(--text); }
.rich { font-size: 14px; line-height: 1.8; word-break: break-word; }
.rich h2 { font-size: 17px; margin: 18px 0 8px; }
.rich h3 { font-size: 15px; margin: 14px 0 6px; }
.rich p { margin: 0 0 10px; }
.rich img { display: block; max-width: 100%; height: auto; margin: 10px 0; border-radius: var(--radius); }
.rich a { word-break: break-all; }

/* ---------- 订单列表 / 详情 ---------- */
.order-list { display: flex; flex-direction: column; gap: 12px; }
.order-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 14px;
}
.order-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--border);
    font-size: 13px;
    color: var(--text-muted);
    flex-wrap: wrap;
}
.order-no { word-break: break-all; }
.status { display: inline-block; padding: 1px 8px; font-size: 12px; border-radius: 10px; background: #F1F3F6; color: var(--text-muted); }
.status-0 { background: #FFF8E6; color: #7B5E00; }
.status-1 { background: #F0FFF4; color: var(--success); }
.status-2 { background: #F1F3F6; color: var(--text-muted); }
.status-3 { background: #EBF8FF; color: #2A4365; }
.order-body, .order-goods { display: flex; gap: 12px; padding: 12px 0; }
.order-thumb { width: 76px; height: 76px; object-fit: cover; border-radius: var(--radius); background: var(--bg); flex: none; }
.order-meta { flex: 1; min-width: 0; }
.order-name { margin: 0 0 4px; font-size: 15px; line-height: 1.4; word-break: break-word; }
.order-sub { margin: 0 0 4px; font-size: 12px; color: var(--text-muted); word-break: break-all; }
.order-actions { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.inline-form { display: inline; margin: 0; }
.resource-box { font-size: 14px; }
.resource-box p { margin: 0 0 10px; }
.contact-line { display: flex; gap: 16px; flex-wrap: wrap; font-size: 14px; color: var(--text-muted); }
.help-sec h2:first-child { margin-top: 0; }

@media (max-width: 768px) {
    .goods-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .goods-cover { height: 110px; }
    .goods-body { padding: 10px; }
    .goods-title { font-size: 14px; }
    .detail-top { flex-direction: column; }
    .detail-cover { width: 100%; max-width: 100%; height: 190px; }
    .detail-price .price { font-size: 22px; }
    .order-thumb { width: 64px; height: 64px; }
    .order-actions { justify-content: flex-start; }
}

/* ============================================================
   支付模块（阶段 5）：支付页 / 二维码 / 倒计时 / 微信提示 / 结果页
   ============================================================ */
.pay-card { max-width: 640px; }
.pay-order { padding: 4px 0 12px; border-bottom: 1px dashed var(--border); }
.pay-order .order-name { font-size: 16px; }
.pay-amount {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    padding: 14px 0;
    border-bottom: 1px dashed var(--border);
}
.pay-amount-label { font-size: 14px; color: var(--text-muted); }
.pay-amount .price { font-size: 26px; }
.pay-countdown {
    margin: 14px 0 4px;
    font-size: 14px;
    color: var(--text-muted);
}
.countdown-time {
    display: inline-block;
    min-width: 56px;
    font-weight: 700;
    color: var(--price);
    font-variant-numeric: tabular-nums;
}
.pay-wechat {
    margin: 14px 0 0;
    padding: 14px 16px;
    background: #FFF8E6;
    border: 1px solid #F6E05E;
    border-radius: var(--radius);
    color: #7B5E00;
    font-size: 14px;
    line-height: 1.7;
}
.pay-mobile { margin: 16px 0 0; text-align: center; }
.pay-mobile .btn { display: inline-block; }
.pay-qr { margin: 18px 0 0; text-align: center; }
.qr-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 200px;
    height: 200px;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.qr-box img, .qr-box canvas { display: block; max-width: 100%; }
.qr-fallback { font-size: 13px; color: var(--text-muted); }
.pay-qr-tip { margin: 10px 0 0; font-size: 13px; color: var(--text-muted); }
.pay-actions { display: flex; justify-content: center; gap: 10px; margin: 16px 0 0; flex-wrap: wrap; }
.pay-link { margin-top: 16px; }
.pay-link-text {
    margin: 6px 0 0;
    padding: 10px 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 12px;
    color: var(--text-muted);
    word-break: break-all;
    max-height: 96px;
    overflow: auto;
}
.pay-tip { margin-top: 18px; font-size: 12px; color: var(--text-muted); line-height: 1.7; }

.result-card { max-width: 640px; text-align: center; }
.result-icon {
    width: 46px;
    height: 46px;
    margin: 6px auto 10px;
    line-height: 46px;
    border-radius: 50%;
    background: #F0FFF4;
    color: var(--success);
    font-size: 22px;
    font-weight: 700;
}
.result-card .card-title { text-align: center; font-size: 17px; }
.result-card .info-list { text-align: left; margin-top: 12px; }
.result-tip { font-size: 13px; color: var(--text-muted); margin: 0 0 6px; }
.result-actions { display: flex; justify-content: center; gap: 10px; margin-top: 18px; flex-wrap: wrap; }

@media (max-width: 480px) {
    .pay-card { padding: 14px; }
    .pay-amount .price { font-size: 22px; }
    .qr-box { width: 176px; height: 176px; }
    .pay-actions { flex-direction: column; }
    .pay-actions .btn { display: block; width: 100%; text-align: center; }
    .result-actions { flex-direction: column; }
    .result-actions .btn { display: block; width: 100%; text-align: center; }
}

/* ============================================================
   资源交付（阶段 6）：订单详情资源卡 / 复制 / 次数与有效期
   ============================================================ */
.res-meta { font-size: 13px; color: var(--text-muted); margin: 0 0 10px; }
.resource-tip { color: var(--text-muted); }
.res-view { padding-top: 2px; }
.res-output { margin-top: 10px; padding: 10px 12px; background: var(--bg); border: 1px dashed var(--border); border-radius: var(--radius); }
.res-line { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding: 4px 0; font-size: 13px; }
.res-label { color: var(--text-muted); flex: none; min-width: 58px; }
.res-value { word-break: break-all; font-family: Consolas, Menlo, monospace; color: var(--text); flex: 1 1 160px; }
.res-msg { margin: 8px 0 0; font-size: 12px; color: var(--price); min-height: 0; }
.res-actions { margin-top: 10px; }
.res-text {
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 14px;
    line-height: 1.75;
    padding: 10px 12px;
    background: var(--bg);
    border-radius: var(--radius);
}
.copy-toast {
    position: fixed;
    left: 50%;
    bottom: 88px;
    transform: translateX(-50%);
    z-index: 999;
    padding: 8px 14px;
    border-radius: 16px;
    background: rgba(26, 32, 44, .88);
    color: #fff;
    font-size: 13px;
    pointer-events: none;
}

@media (max-width: 480px) {
    .res-line { align-items: flex-start; }
    .res-label { min-width: 52px; }
}

/* ---------- 在线客服弹窗（阶段 8） ---------- */
.svc-float {
    position: fixed;
    right: 18px;
    bottom: 96px;
    z-index: 60;
}
.svc-float-btn {
    border: 0;
    border-radius: 22px;
    padding: 10px 16px;
    background: var(--primary);
    color: #fff;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(43, 108, 176, .28);
}
.svc-float-btn:hover { background: var(--primary-dark); }
.svc-mask {
    position: fixed;
    inset: 0;
    z-index: 95;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(15, 23, 42, .45);
}
.svc-mask.is-open { display: flex; }
.svc-dialog {
    position: relative;
    width: min(92vw, 380px);
    max-height: 82vh;
    overflow: auto;
    padding: 22px 20px 18px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 24px 60px rgba(15, 23, 42, .25);
}
.svc-close {
    position: absolute;
    right: 8px;
    top: 6px;
    width: 30px;
    height: 30px;
    border: 0;
    background: transparent;
    color: var(--text-muted);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
}
.svc-title {
    margin: 0 24px 10px 0;
    font-size: 17px;
    color: var(--text);
}
.svc-body {
    margin: 0 0 16px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.75;
    word-break: break-word;
}
.svc-link { display: inline-flex; text-decoration: none; }

@media (max-width: 480px) {
    .svc-float { right: 12px; bottom: 86px; }
    .svc-dialog { padding: 20px 16px 16px; }
}