/* 翰链网络科技 后台样式 */
:root {
    --brand: #2563EB;
    --brand-600: #1D4ED8;
    --brand-50: #EFF6FF;
    --dark: #0F172A;
    --dark-2: #1E293B;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --radius: 12px;
    --shadow: 0 2px 12px rgba(15,23,42,.06);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--gray-100); color: var(--gray-700); font-size: 14px; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

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

/* 侧边栏 */
.admin-sidebar { width: 232px; background: var(--dark); color: #fff; display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0; left: 0; z-index: 10; }
.admin-brand { display: flex; align-items: center; gap: 12px; padding: 22px 20px; border-bottom: 1px solid rgba(255,255,255,.08); }
.logo-mark { width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg,#3B82F6,#1D4ED8); display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; flex-shrink: 0; }
.admin-brand strong { display: block; font-size: 16px; }
.admin-brand em { font-style: normal; font-size: 10px; color: rgba(255,255,255,.4); letter-spacing: 1px; }
.admin-nav { flex: 1; padding: 14px 12px; overflow-y: auto; }
.admin-nav a { display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-radius: 9px; font-size: 14px; color: rgba(255,255,255,.72); margin-bottom: 4px; transition: all .2s; }
.admin-nav a svg { width: 18px; height: 18px; flex-shrink: 0; }
.admin-nav a:hover { background: rgba(255,255,255,.07); color: #fff; }
.admin-nav a.active { background: linear-gradient(135deg,#3B82F6,#1D4ED8); color: #fff; box-shadow: 0 6px 16px rgba(59,130,246,.35); }
.admin-sidebar-foot { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; }
.admin-sidebar-foot a { color: rgba(255,255,255,.55); }
.admin-sidebar-foot a:hover { color: #fff; }

/* 主体 */
.admin-main { margin-left: 232px; flex: 1; min-width: 0; }
.admin-header { height: 64px; background: #fff; border-bottom: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: space-between; padding: 0 28px; position: sticky; top: 0; z-index: 5; }
.admin-header-title { font-size: 18px; font-weight: 700; color: var(--dark); }
.admin-header-user { display: flex; align-items: center; gap: 16px; font-size: 14px; color: var(--gray-500); }
.admin-header-user a { color: #E11D48; font-weight: 600; }
.admin-content { padding: 24px 28px 48px; }

/* 卡片 */
.card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--gray-200); }
.card-head { padding: 18px 22px; border-bottom: 1px solid var(--gray-100); display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.card-head h3 { font-size: 16px; font-weight: 700; color: var(--dark); }
.card-body { padding: 22px; }

/* 统计 */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: var(--radius); border: 1px solid var(--gray-200); box-shadow: var(--shadow); padding: 22px; }
.stat-card .top { display: flex; justify-content: space-between; align-items: flex-start; }
.stat-card .ico { width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center; background: var(--brand-50); color: var(--brand); }
.stat-card .num { font-size: 30px; font-weight: 800; color: var(--dark); margin-top: 14px; letter-spacing: -1px; }
.stat-card .label { font-size: 13px; color: var(--gray-500); }

/* 按钮 */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px; border-radius: 8px; font-size: 14px; font-weight: 600; border: none; cursor: pointer; transition: all .2s; font-family: inherit; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-600); }
.btn-default { background: #fff; color: var(--gray-600); border: 1px solid var(--gray-300); }
.btn-default:hover { border-color: var(--brand); color: var(--brand); }
.btn-danger { background: #FEF2F2; color: #DC2626; }
.btn-danger:hover { background: #DC2626; color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; justify-content: center; }

/* 表格 */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th { text-align: left; padding: 13px 14px; background: var(--gray-50); color: var(--gray-600); font-weight: 600; font-size: 13px; white-space: nowrap; border-bottom: 1px solid var(--gray-200); }
table.data td { padding: 14px; border-bottom: 1px solid var(--gray-100); vertical-align: middle; }
table.data tr:hover td { background: var(--gray-50); }
table.data .thumb { width: 68px; height: 46px; object-fit: cover; border-radius: 8px; border: 1px solid var(--gray-200); background: var(--gray-100); }
table.data .actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* 徽标 */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-green { background: #DCFCE7; color: #16A34A; }
.badge-gray { background: var(--gray-100); color: var(--gray-500); }
.badge-red { background: #FEE2E2; color: #DC2626; }
.badge-blue { background: #DBEAFE; color: #2563EB; }

/* 表单 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--dark); margin-bottom: 7px; }
.form-group label .req { color: #DC2626; }
.form-control { width: 100%; padding: 10px 13px; border: 1.5px solid var(--gray-200); border-radius: 8px; font-size: 14px; font-family: inherit; color: var(--dark); background: #fff; transition: all .2s; }
.form-control:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
textarea.form-control { resize: vertical; min-height: 110px; }
.form-hint { font-size: 12px; color: var(--gray-400); margin-top: 5px; }
.form-actions { display: flex; gap: 12px; margin-top: 8px; }

/* 登录页 */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #0F172A 0%, #1D4ED8 100%); padding: 20px; }
.login-box { width: 100%; max-width: 400px; background: #fff; border-radius: 20px; padding: 40px 34px; box-shadow: 0 30px 60px rgba(0,0,0,.3); }
.login-box .brand { text-align: center; margin-bottom: 28px; }
.login-box .brand .logo-mark { margin: 0 auto 14px; width: 56px; height: 56px; font-size: 26px; }
.login-box .brand h1 { font-size: 22px; color: var(--dark); font-weight: 800; }
.login-box .brand p { font-size: 13px; color: var(--gray-400); margin-top: 4px; }
.login-tip { font-size: 12px; color: var(--gray-400); text-align: center; margin-top: 18px; }

/* 提示 */
.alert { padding: 11px 15px; border-radius: 8px; font-size: 14px; margin-bottom: 16px; display: none; }
.alert.show { display: block; }
.alert.ok { background: #F0FDF4; color: #16A34A; border: 1px solid #BBF7D0; }
.alert.err { background: #FEF2F2; color: #DC2626; border: 1px solid #FECACA; }

/* 图片预览格 */
.img-preview { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; margin-top: 10px; }
.img-preview .item { position: relative; border-radius: 10px; overflow: hidden; border: 1px solid var(--gray-200); aspect-ratio: 4/3; background: var(--gray-100); }
.img-preview .item img { width: 100%; height: 100%; object-fit: cover; }

/* 场景选择 */
.scene-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.scene-item { border: 1.5px solid var(--gray-200); border-radius: 10px; padding: 14px; cursor: pointer; transition: all .2s; text-align: center; }
.scene-item:hover { border-color: var(--brand); background: var(--brand-50); }
.scene-item.selected { border-color: var(--brand); background: var(--brand-50); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.scene-item strong { display: block; font-size: 14px; color: var(--dark); }
.scene-item span { font-size: 12px; color: var(--gray-400); }

/* 分页 */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 24px; flex-wrap: wrap; }
.pagination li { list-style: none; }
.pagination li a, .pagination li span { display: flex; align-items: center; justify-content: center; min-width: 36px; height: 36px; padding: 0 10px; border-radius: 7px; border: 1px solid var(--gray-200); font-size: 13px; color: var(--gray-600); background: #fff; }
.pagination li a:hover { border-color: var(--brand); color: var(--brand); }
.pagination li.active span { background: var(--brand); color: #fff; border-color: var(--brand); }
.pagination li.disabled span { opacity: .4; }

.empty { text-align: center; padding: 60px 20px; color: var(--gray-400); }

/* 访问统计图表 */
.chart { display: flex; align-items: flex-end; gap: 10px; height: 220px; padding: 10px 4px 0; overflow-x: auto; }
.chart .col { flex: 1 0 42px; display: flex; flex-direction: column; align-items: center; gap: 6px; min-width: 42px; }
.chart .bars { display: flex; align-items: flex-end; gap: 3px; height: 180px; }
.chart .bar { width: 14px; border-radius: 4px 4px 0 0; background: linear-gradient(180deg,#3B82F6,#1D4ED8); position: relative; min-height: 2px; transition: height .3s; }
.chart .bar.uv { background: linear-gradient(180deg,#22D3EE,#0891B2); }
.chart .col .lbl { font-size: 11px; color: var(--gray-400); white-space: nowrap; }
.chart .col .val { font-size: 11px; color: var(--gray-600); font-weight: 700; }
.chart-legend { display: flex; gap: 18px; font-size: 13px; color: var(--gray-500); margin-bottom: 4px; }
.chart-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.mono { font-family: Consolas, Menlo, monospace; font-size: 13px; }
.nowrap { white-space: nowrap; }

@media (max-width: 900px) {
    .admin-sidebar { transform: translateX(-100%); transition: transform .3s; }
    .admin-sidebar.open { transform: none; }
    .admin-main { margin-left: 0; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .form-grid { grid-template-columns: 1fr; }
}