* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f0f2f5; color: #333; }
a { color: #4a6cf7; text-decoration: none; }

.admin-wrapper { display: flex; min-height: 100vh; }
.admin-sidebar { width: 220px; background: #1e293b; color: #fff; flex-shrink: 0; }
.admin-brand { padding: 20px 16px; font-size: 16px; font-weight: bold; border-bottom: 1px solid #334155; }
.admin-user { padding: 12px 16px; font-size: 13px; color: #94a3b8; }
.admin-nav { padding: 12px 0; }
.nav-link { display: block; padding: 10px 20px; color: #cbd5e1; font-size: 14px; }
.nav-link:hover, .nav-link.active { background: #334155; color: #fff; }

.admin-main { flex: 1; display: flex; flex-direction: column; }
.admin-topbar { display: flex; justify-content: space-between; align-items: center; padding: 16px 24px; background: #fff; border-bottom: 1px solid #e2e8f0; }
.admin-topbar h1 { font-size: 18px; }
.btn-logout { padding: 6px 14px; background: #ef4444; color: #fff; border-radius: 6px; font-size: 13px; }
.admin-content { padding: 24px; flex: 1; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #1e293b; }
.login-box { background: #fff; padding: 40px; border-radius: 12px; width: 360px; box-shadow: 0 8px 32px rgba(0,0,0,.2); }
.login-box h1 { text-align: center; margin-bottom: 24px; font-size: 22px; }
.login-input { width: 100%; padding: 12px; margin-bottom: 14px; border: 1px solid #ddd; border-radius: 8px; font-size: 14px; }
.login-btn { width: 100%; padding: 12px; background: #4a6cf7; color: #fff; border: none; border-radius: 8px; font-size: 15px; cursor: pointer; }

.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.flash-success { background: #d1fae5; color: #065f46; }
.flash-error { background: #fee2e2; color: #991b1b; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.card { background: #fff; padding: 20px; border-radius: 10px; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.card .num { font-size: 28px; font-weight: bold; color: #4a6cf7; }
.card .label { font-size: 13px; color: #64748b; margin-top: 4px; }

.panel { background: #fff; border-radius: 10px; padding: 20px; margin-bottom: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.panel h2 { font-size: 16px; margin-bottom: 16px; }

.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; color: #64748b; margin-bottom: 4px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 8px 12px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px;
}
.form-row textarea { min-height: 100px; resize: vertical; }
.form-actions { margin-top: 16px; }
.btn { padding: 8px 16px; border: none; border-radius: 6px; font-size: 13px; cursor: pointer; }
.btn-primary { background: #4a6cf7; color: #fff; }
.btn-danger { background: #ef4444; color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

.table-wrap { overflow-x: auto; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th, .admin-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #f1f5f9; }
.admin-table th { background: #f8fafc; font-weight: 600; color: #475569; }
.admin-table tr:hover { background: #f8fafc; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px; }
.badge-default { background: #e2e8f0; color: #475569; }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }

.pagination { display: flex; gap: 4px; margin-top: 16px; }
.pagination a { padding: 6px 12px; background: #fff; border: 1px solid #ddd; border-radius: 4px; font-size: 13px; }
.pagination a.active { background: #4a6cf7; color: #fff; border-color: #4a6cf7; }

.inline-form { display: inline; }

@media (max-width: 768px) {
  .admin-wrapper { flex-direction: column; }
  .admin-sidebar { width: 100%; }
  .admin-nav { display: flex; flex-wrap: wrap; }
}