:root{
    --admin-primary:#0f5fa6;
    --admin-primary-dark:#0c4d87;
    --admin-accent:#f59e0b;
    --admin-bg:#f4f7fb;
    --admin-card:#ffffff;
    --admin-text:#172033;
    --admin-muted:#6b7280;
    --admin-border:#dbe4ef;
    --admin-success:#16a34a;
    --admin-danger:#dc2626;
    --admin-shadow:0 12px 30px rgba(15,23,42,.08);
    --admin-radius:18px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--admin-bg);color:var(--admin-text);font-family:Arial,Helvetica,sans-serif}
a{color:var(--admin-primary);text-decoration:none}
a:hover{color:var(--admin-primary-dark)}
img{max-width:100%;height:auto}
.admin-layout{display:flex;min-height:100vh}
.admin-sidebar{width:280px;background:linear-gradient(180deg,#0f5fa6 0%,#163e6a 100%);color:#fff;padding:26px 18px;position:sticky;top:0;height:100vh;overflow:auto}
.admin-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px;padding:0 10px}
.admin-brand-badge{width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700}
.admin-brand-title{font-size:22px;font-weight:800;line-height:1.15}
.admin-brand-sub{font-size:13px;opacity:.82;margin-top:3px}
.admin-nav-title{font-size:12px;letter-spacing:.12em;text-transform:uppercase;opacity:.7;padding:8px 10px}
.admin-nav{display:flex;flex-direction:column;gap:6px}
.admin-nav a{display:flex;align-items:center;justify-content:space-between;color:#e7f0fb;padding:11px 12px;border-radius:12px;font-weight:600;gap:10px}
.admin-nav a:hover,.admin-nav a.active{background:rgba(255,255,255,.12);color:#fff}
.admin-nav small{opacity:.72;font-weight:500}
.admin-main{flex:1;min-width:0;padding:26px}
.admin-topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;background:var(--admin-card);border:1px solid var(--admin-border);box-shadow:var(--admin-shadow);border-radius:20px;padding:18px 22px;margin-bottom:22px}
.admin-topbar h1{margin:0;font-size:30px;line-height:1.2}
.admin-topbar p{margin:6px 0 0;color:var(--admin-muted)}
.admin-userbox{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.admin-user-pill{display:flex;align-items:center;gap:10px;background:#eef5fc;border-radius:999px;padding:8px 14px}
.admin-avatar{width:40px;height:40px;border-radius:50%;background:#d9e8fb;color:#0f5fa6;display:flex;align-items:center;justify-content:center;font-weight:800}
.admin-logout{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--admin-border);font-weight:700}
.admin-card{background:var(--admin-card);border:1px solid var(--admin-border);border-radius:22px;box-shadow:var(--admin-shadow);padding:22px}
.admin-card + .admin-card{margin-top:22px}
.admin-card-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.admin-card-header h2{margin:0;font-size:22px}
.admin-card-header p{margin:4px 0 0;color:var(--admin-muted)}
.admin-actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 16px;border:0;border-radius:12px;font-weight:700;cursor:pointer;text-decoration:none;transition:all .2s ease}
.btn-primary{background:var(--admin-primary);color:#fff}.btn-primary:hover{background:var(--admin-primary-dark);color:#fff}
.btn-secondary{background:#fff;color:var(--admin-text);border:1px solid var(--admin-border)}
.btn-danger{background:var(--admin-danger);color:#fff}.btn-danger:hover{background:#b91c1c;color:#fff}
.btn-success{background:var(--admin-success);color:#fff}.btn-success:hover{background:#15803d;color:#fff}
.btn-sm{height:36px;padding:0 12px;border-radius:10px;font-size:13px}
.notice{padding:14px 16px;border-radius:14px;margin-bottom:18px;font-weight:600}
.notice.info{background:#eff6ff;border:1px solid #bfdbfe;color:#1d4ed8}
.notice.success{background:#ecfdf3;border:1px solid #bbf7d0;color:#15803d}
.notice.error{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}
.admin-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:18px}
.stat-card{background:linear-gradient(135deg,#f8fbff 0%,#eef5fc 100%);border:1px solid #d6e5f6;border-radius:18px;padding:18px}
.stat-card strong{display:block;font-size:14px;color:var(--admin-muted);text-transform:uppercase;letter-spacing:.08em}
.stat-card span{display:block;margin-top:10px;font-size:30px;font-weight:800;color:var(--admin-primary-dark)}
.admin-table-wrap{overflow:auto;border:1px solid var(--admin-border);border-radius:18px}
.admin-table{width:100%;border-collapse:collapse;min-width:840px;background:#fff}
.admin-table th,.admin-table td{padding:14px 16px;border-bottom:1px solid #edf1f5;text-align:left;vertical-align:top}
.admin-table th{position:sticky;top:0;background:#f7fafc;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--admin-muted)}
.admin-table tr:hover td{background:#fafcff}
.data-truncate{display:block;max-width:360px;max-height:68px;overflow:hidden;line-height:1.5;white-space:normal;word-break:break-word;color:#334155}
.data-code{font-family:Consolas,monospace;font-size:13px}
.admin-empty{padding:28px;border:1px dashed var(--admin-border);border-radius:18px;background:#fbfdff;color:var(--admin-muted)}
.module-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.module-card{display:block;padding:18px;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border:1px solid var(--admin-border);border-radius:18px;box-shadow:0 8px 18px rgba(15,23,42,.05)}
.module-card strong{display:block;font-size:18px;color:var(--admin-text);margin-bottom:6px}
.module-card span{display:block;color:var(--admin-muted);font-size:14px;line-height:1.5}
.admin-form{max-width:980px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.form-group{margin-bottom:18px}
.form-group.full{grid-column:1/-1}
.form-group label{display:block;font-weight:700;margin-bottom:8px}
.form-group small{display:block;color:var(--admin-muted);margin-top:6px;line-height:1.45}
.form-control{width:100%;height:46px;border:1px solid #ced8e3;border-radius:12px;padding:0 14px;font-size:15px;color:var(--admin-text);background:#fff}
textarea.form-control{height:auto;min-height:160px;padding:12px 14px;resize:vertical}
select.form-control{padding-right:34px}
.form-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px}
.image-preview{margin-top:12px;padding:10px;border:1px solid var(--admin-border);border-radius:14px;background:#fbfdff;display:inline-block}
.image-preview img{max-width:260px;max-height:180px;border-radius:10px;display:block}
.help-list{margin:0;padding-left:18px;color:var(--admin-muted)}
@media (max-width:1100px){.admin-sidebar{width:250px}.admin-main{padding:20px}.admin-stats{grid-template-columns:1fr}}
@media (max-width:900px){.admin-layout{display:block}.admin-sidebar{position:relative;height:auto;width:100%;border-radius:0;padding-bottom:18px}.admin-main{padding:16px}.admin-topbar{display:block}.admin-userbox{justify-content:flex-start;margin-top:14px}.form-grid{grid-template-columns:1fr}.admin-table{min-width:680px}}