/* ===== 外贸B2B后台管理样式（纯手写CSS） ===== */
:root {
    --primary: #1a73e8;
    --primary-dark: #1557b0;
    --bg: #f4f6f9;
    --sidebar: #1e293b;
    --sidebar-hover: #334155;
    --text: #1f2937;
    --text-light: #6b7280;
    --border: #e5e7eb;
    --danger: #dc2626;
    --success: #16a34a;
    --warning: #d97706;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.layout { display: flex; min-height: 100vh; }

/* 侧边栏 */
.sidebar { width: 220px; background: var(--sidebar); color: #cbd5e1; display: flex; flex-direction: column; flex-shrink: 0; }
.logo { padding: 20px 16px; font-size: 20px; font-weight: 700; color: #fff; border-bottom: 1px solid rgba(255,255,255,.08); }
.logo span { color: var(--primary); }
.nav { flex: 1; padding: 12px 0; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 11px 20px; color: #cbd5e1; font-size: 14px; transition: background .15s; }
.nav a:hover { background: var(--sidebar-hover); text-decoration: none; color: #fff; }
.nav a.active { background: var(--primary); color: #fff; }
.nav .icon { width: 20px; text-align: center; }
.badge { background: var(--danger); color: #fff; border-radius: 10px; font-size: 12px; padding: 1px 7px; margin-left: auto; }
.sidebar-footer { padding: 14px 20px; font-size: 12px; color: #64748b; border-top: 1px solid rgba(255,255,255,.08); }

/* 主区域 */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar { background: #fff; padding: 0 24px; height: 56px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); }
.topbar-title { font-size: 16px; font-weight: 600; }
.topbar-user { display: flex; align-items: center; gap: 12px; color: var(--text-light); }
.site-switcher select { height: 34px; border: 1px solid var(--border); border-radius: 6px; padding: 0 10px; background: #fff; color: var(--text); }
.content { padding: 24px; flex: 1; }

/* 卡片/统计 */
.card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.06); margin-bottom: 20px; }
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.stat .num { font-size: 28px; font-weight: 700; margin: 6px 0; }
.stat .label { color: var(--text-light); font-size: 13px; }
.stat.ok .num { color: var(--success); }
.stat.warn .num { color: var(--warning); }
.stat.primary .num { color: var(--primary); }

/* 表格 */
.table-wrap { background: #fff; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,.06); overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 600px; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
th { background: #f8fafc; font-weight: 600; color: var(--text-light); white-space: nowrap; }
tr:hover td { background: #f8fafc; }
.thumb { width: 50px; height: 50px; object-fit: cover; border-radius: 4px; border: 1px solid var(--border); background: #f1f5f9; }

/* 标签 */
.tag { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 12px; background: #e5e7eb; color: var(--text-light); }
.tag.ok { background: #dcfce7; color: var(--success); }
.tag.off { background: #f3f4f6; color: #9ca3af; }
.tag.hot { background: #fee2e2; color: var(--danger); }
.tag.featured { background: #dbeafe; color: var(--primary-dark); }
.tag.unread { background: #fef3c7; color: var(--warning); font-weight: 600; }

/* 按钮 */
.btn { display: inline-block; padding: 8px 16px; border-radius: 6px; border: 1px solid transparent; font-size: 13px; cursor: pointer; background: var(--primary); color: #fff; transition: background .15s; }
.btn:hover { background: var(--primary-dark); text-decoration: none; color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-outline { background: #fff; color: var(--text); border-color: var(--border); }
.btn-outline:hover { background: #f8fafc; color: var(--text); }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-success { background: var(--success); }
.btn-success:hover { background: #15803d; }
.btn-lg { padding: 12px 28px; font-size: 15px; }
.link-btn { border: 0; background: transparent; color: var(--primary); cursor: pointer; font: inherit; padding: 0; margin-left: 8px; }
.link-btn:hover { text-decoration: underline; }

/* 表单 */
.form { max-width: 900px; }
.form-item { margin-bottom: 18px; }
.form-item label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 13px; }
.form-item .hint { color: var(--text-light); font-size: 12px; margin-top: 4px; }
.form-item input[type=text], .form-item input[type=password], .form-item input[type=email],
.form-item input[type=number], .form-item input[type=url], .form-item select, .form-item textarea {
    width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; font-family: inherit; background: #fff;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,115,232,.12); }
.form-item textarea { min-height: 120px; resize: vertical; }
.form-item textarea.html { min-height: 260px; font-family: Consolas, monospace; }
.form-inline { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.form-inline .form-item { margin-bottom: 0; flex: 1; min-width: 160px; }
.checkbox-line { display: flex; align-items: center; gap: 8px; }
.checkbox-line input { width: auto; }

/* 多语言标签页 */
.lang-tabs { display: flex; gap: 0; border-bottom: 2px solid var(--border); margin-bottom: 20px; flex-wrap: wrap; }
.lang-tabs button { padding: 9px 18px; background: none; border: none; cursor: pointer; font-size: 13px; color: var(--text-light); border-bottom: 2px solid transparent; margin-bottom: -2px; }
.lang-tabs button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.lang-panel { display: none; }
.lang-panel.active { display: block; }

/* 提示 */
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 13px; }
.alert-success { background: #dcfce7; color: #166534; }
.alert-error, .alert-danger { background: #fee2e2; color: #991b1b; }
.alert-warning { background: #fef3c7; color: #92400e; }
.alert-info { background: #dbeafe; color: #1e40af; }

/* 标签页 */
.tabs { margin-bottom: 0; }
.tab-nav { display: flex; flex-wrap: wrap; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 16px; align-items: flex-end; }
.tab-nav > button[data-tab] { appearance: none; border: none; background: transparent; padding: 10px 18px; font-size: 14px; color: var(--text-light); cursor: pointer; border-radius: 8px 8px 0 0; border-bottom: 2px solid transparent; margin-bottom: -2px; font-family: inherit; }
.tab-nav > button[data-tab]:hover { color: var(--primary); background: rgba(26,115,232,.06); }
.tab-nav > button[data-tab].active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; background: rgba(26,115,232,.08); }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: tab-fade .18s ease; }
@keyframes tab-fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* 分页 */
.pagination { display: flex; gap: 6px; margin-top: 16px; flex-wrap: wrap; }
.pagination a, .pagination span { padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px; background: #fff; font-size: 13px; }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 工具栏 */
.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 12px; }
.toolbar .actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* 登录页 */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #1e293b 0%, #1a73e8 100%); }
.login-box { background: #fff; border-radius: 10px; padding: 40px; width: 380px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.login-box.login-error { animation: login-shake .5s ease; }
.login-alert { display: flex; align-items: flex-start; gap: 12px; background: #fee2e2; border: 2px solid #dc2626; border-left: 8px solid #b91c1c; color: #7f1d1d; font-size: 14px; font-weight: 600; padding: 16px; border-radius: 8px; margin-bottom: 22px; box-shadow: 0 10px 24px rgba(220,38,38,.18); }
.login-alert strong { display: inline-block; font-size: 17px; line-height: 1.2; margin-bottom: 3px; }
.login-alert small { font-weight: 500; font-size: 13px; line-height: 1.45; }
.login-alert .login-alert-icon { flex: 0 0 auto; width: 28px; height: 28px; border-radius: 50%; background: #dc2626; color: #fff; display: flex; align-items: center; justify-content: center; font-size: 17px; font-weight: 800; line-height: 1; }
.login-alert-locked { background: #fff7ed; border-color: #ea580c; border-left-color: #c2410c; color: #7c2d12; box-shadow: 0 10px 24px rgba(234,88,12,.18); }
.login-alert-locked .login-alert-icon { background: #ea580c; }
.login-error .form-item input { border-color: #dc2626; }
.login-error .form-item input:focus { box-shadow: 0 0 0 3px rgba(220,38,38,.15); outline: none; }
@keyframes login-shake { 0%,100%{transform:translateX(0)} 15%{transform:translateX(-10px)} 30%{transform:translateX(8px)} 45%{transform:translateX(-6px)} 60%{transform:translateX(4px)} 75%{transform:translateX(-2px)} }
.login-box h1 { font-size: 20px; margin-bottom: 6px; }
.login-box .sub { color: var(--text-light); font-size: 13px; margin-bottom: 24px; }
.login-box .btn { width: 100%; padding: 12px; font-size: 15px; margin-top: 8px; }

/* 静态生成页 */
.gen-result { background: #0f172a; color: #4ade80; padding: 20px; border-radius: 8px; font-family: Consolas, monospace; font-size: 13px; line-height: 1.8; white-space: pre-wrap; }
.grid-actions { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.template-files { display: flex; flex-wrap: wrap; gap: 8px; }
.template-files code { background: #f1f5f9; border: 1px solid var(--border); border-radius: 6px; padding: 6px 9px; font-size: 12px; color: var(--text); }

/* 图片上传 */
.img-uploader { border: 2px dashed var(--border); border-radius: 8px; padding: 20px; text-align: center; color: var(--text-light); cursor: pointer; transition: border-color .15s; }
.img-uploader:hover { border-color: var(--primary); }
.img-preview { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.img-preview .img-item { position: relative; width: 90px; height: 90px; }
.img-preview img { width: 90px; height: 90px; object-fit: cover; border-radius: 6px; border: 1px solid var(--border); }
.img-preview .remove { position: absolute; top: -8px; right: -8px; width: 20px; height: 20px; background: var(--danger); color: #fff; border-radius: 50%; border: none; cursor: pointer; font-size: 12px; line-height: 1; }
.main-image-preview { max-width: 200px; max-height: 150px; border-radius: 6px; border: 1px solid var(--border); margin-top: 8px; }

@media (max-width: 768px) {
    .sidebar { width: 60px; }
    .sidebar .logo { font-size: 14px; padding: 16px 8px; }
    .nav a { padding: 12px 0; justify-content: center; }
    .nav a span:not(.icon) { display: none; }
    .nav .badge { display: none; }
    .sidebar-footer { display: none; }
    .content { padding: 14px; }
}