* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    background: #f4f5f7;
    color: #222;
}
a { color: #3457d5; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Login */
.login-page { display:flex; align-items:center; justify-content:center; min-height:100vh; }
.login-box { background:#fff; padding:40px; border-radius:12px; width:340px; box-shadow:0 4px 24px rgba(0,0,0,0.08); }
.login-box h1 { font-size:20px; margin-bottom:4px; }
.login-box .subtitle { color:#777; font-size:14px; margin-bottom:24px; }
.login-box label { display:block; font-size:13px; margin:12px 0 4px; color:#555; }
.login-box input { width:100%; padding:10px; border:1px solid #ddd; border-radius:8px; }
.login-box button { width:100%; margin-top:20px; padding:12px; background:#3457d5; color:#fff; border:none; border-radius:8px; cursor:pointer; font-size:15px; }
.alert { padding:10px; border-radius:8px; margin-bottom:12px; font-size:14px; }
.alert-error { background:#fdecea; color:#b02a18; }
.alert-success { background:#e3f7e8; color:#1e7e34; }

/* Layout */
.layout { display:flex; min-height:100vh; }
.sidebar { width:230px; background:#1f2333; color:#fff; display:flex; flex-direction:column; padding:20px 0; }
.brand { font-size:18px; font-weight:bold; padding:0 20px 20px; }
.sidebar nav { flex:1; }
.sidebar nav a { display:block; padding:10px 20px; color:#cfd2e0; }
.sidebar nav a:hover { background:#2b2f44; text-decoration:none; }
.nav-sub a { padding-left:36px; font-size:14px; }
.sidebar-footer { padding:16px 20px; border-top:1px solid #333; font-size:13px; }
.admin-name { margin-bottom:6px; color:#aab; }
.logout-link { color:#ff9b9b; }

.content { flex:1; padding:32px; max-width: 1100px; }

/* Page elements */
.page-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:20px; }
.page-header h1 { margin:0; font-size:22px; }

.card { background:#fff; border-radius:12px; padding:24px; margin-bottom:20px; box-shadow:0 1px 4px rgba(0,0,0,0.05); }
.card-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(220px,1fr)); gap:16px; }
.card-link { text-align:center; font-size:16px; font-weight:600; color:#333; cursor:pointer; }
.card-link:hover { text-decoration:none; background:#fafbff; }

.hidden { display:none; }

.form-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(220px,1fr)); gap:16px; margin-bottom:16px; }
.form-grid .full-width { grid-column: 1 / -1; }
.form-grid label, .login-box label { font-size:13px; color:#555; display:block; margin-bottom:4px; }
.form-grid input, .form-grid select { width:100%; padding:10px; border:1px solid #ddd; border-radius:8px; }

.btn { padding:9px 16px; border-radius:8px; border:1px solid #ccc; background:#fff; cursor:pointer; font-size:14px; }
.btn-primary { background:#3457d5; color:#fff; border-color:#3457d5; }
.btn-sm { padding:5px 10px; font-size:13px; }

.inline-form { display:inline-flex; gap:8px; align-items:center; }

.table { width:100%; border-collapse:collapse; }
.table th, .table td { padding:10px 12px; text-align:left; border-bottom:1px solid #eee; font-size:14px; }
.table th { color:#777; font-weight:600; font-size:12px; text-transform:uppercase; }
.empty { text-align:center; color:#999; padding:30px 0; }

.badge { padding:3px 10px; border-radius:20px; font-size:12px; font-weight:600; }
.badge-active, .badge-confirmed, .badge-success { background:#e3f7e8; color:#1e7e34; }
.badge-pending, .badge-draft { background:#fff4e0; color:#9a6700; }
.badge-declined, .badge-inactive, .badge-archived { background:#fdecea; color:#b02a18; }

.stats-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(150px,1fr)); gap:14px; margin-bottom:24px; }
.stat-box { background:#fff; border-radius:12px; padding:20px; text-align:center; box-shadow:0 1px 4px rgba(0,0,0,0.05); }
.stat-number { display:block; font-size:28px; font-weight:bold; margin-bottom:4px; }
.stat-confirmed .stat-number { color:#1e7e34; }
.stat-pending .stat-number { color:#9a6700; }
.stat-declined .stat-number { color:#b02a18; }

.help-text { color:#777; font-size:13px; }
.link-danger { color:#b02a18; }

.checkin-result { margin-top:20px; padding:16px; border-radius:10px; font-size:18px; text-align:center; min-height: 20px; }
.result-success { background:#e3f7e8; color:#1e7e34; }
.result-duplicate { background:#fff4e0; color:#9a6700; }
.result-invalid, .result-revoked { background:#fdecea; color:#b02a18; }