body { background: #eef1f6; font-family: "Segoe UI", Roboto, Arial, sans-serif; margin: 0; }
.admin-shell { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #10284d; color: #fff; padding: 20px 0; flex-shrink: 0; }
.sidebar h2 { padding: 0 20px; color: #c9a227; font-size: 1.1rem; margin-bottom: 20px; }
.sidebar a { display: block; padding: 12px 20px; color: #cbd3e1; text-decoration: none; font-weight: 600; }
.sidebar a:hover, .sidebar a.active { background: #1a3a6b; color: #fff; }
.main { flex: 1; padding: 30px; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.topbar .logout { color: #a01c1c; font-weight: 600; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 18px; margin-bottom: 30px; }
.stat-card { background: #fff; border-radius: 10px; padding: 20px; box-shadow: 0 2px 8px rgba(0,0,0,.06); }
.stat-card .num { font-size: 2rem; font-weight: 700; color: #10284d; }
.stat-card .label { color: #666; }
.panel { background: #fff; border-radius: 10px; padding: 24px; box-shadow: 0 2px 8px rgba(0,0,0,.06); margin-bottom: 24px; }
table.admin-table { width: 100%; border-collapse: collapse; }
table.admin-table th, table.admin-table td { padding: 10px; border-bottom: 1px solid #eee; text-align: left; font-size: .92rem; }
table.admin-table th { background: #f6f7fb; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 9px 12px; border: 1px solid #ccd2dc; border-radius: 6px; font-size: .95rem;
}
.btn { display: inline-block; background: #10284d; color: #fff; padding: 9px 16px; border-radius: 6px; border: none; cursor: pointer; font-weight: 600; text-decoration: none; font-size: .9rem; }
.btn.danger { background: #a01c1c; }
.btn.small { padding: 5px 10px; font-size: .8rem; }
.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.alert-error { background: #fde2e2; color: #a01c1c; }
.alert-success { background: #e1f6e6; color: #1a7a3a; }
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #10284d; }