:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f4f6fb;
  --card-bg: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --danger: #dc2626;
  --warn: #b45309;
  --success: #15803d;
}
* { box-sizing: border-box; }
body { margin:0; font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif; background: var(--bg); color: var(--text); }
.container { max-width: 1100px; margin: 0 auto; padding: 24px 16px 60px; }

.topbar { display:flex; align-items:center; justify-content:space-between; background:#111827; color:#fff; padding: 12px 24px; flex-wrap: wrap; }
.topbar .brand { font-weight:700; font-size:18px; }
.topbar nav { display:flex; gap:16px; align-items:center; flex-wrap: wrap; }
.topbar nav a { color:#d1d5db; text-decoration:none; font-size:14px; }
.topbar nav a:hover { color:#fff; }
.user-chip { background:#1f2937; padding:4px 10px; border-radius:14px; font-size:12px; }

h1 { font-size: 22px; margin-bottom: 16px; }
h2 { font-size: 18px; margin: 24px 0 10px; }
h3 { font-size: 15px; margin: 16px 0 6px; color: var(--primary-dark); }

.cards { display:flex; gap:16px; flex-wrap:wrap; margin-bottom: 20px; }
.card { background: var(--card-bg); border:1px solid var(--border); border-radius:10px; padding:18px 24px; min-width:140px; display:flex; flex-direction:column; }
.card-num { font-size:28px; font-weight:700; color: var(--primary-dark); }
.card-alert .card-num { color: var(--danger); }

.table { width:100%; border-collapse: collapse; background: var(--card-bg); border-radius:8px; overflow:hidden; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align:left; font-size: 14px; }
.table th { background:#f9fafb; font-weight:600; }

.form-card { background: var(--card-bg); border:1px solid var(--border); border-radius:10px; padding: 20px; max-width: 520px; display:flex; flex-direction:column; gap: 6px; }
.form-card label { font-size: 13px; color: var(--muted); margin-top: 8px; }
.form-card input, .form-card select { padding:8px 10px; border:1px solid var(--border); border-radius:6px; font-size:14px; }

.inline-form { display:flex; gap:10px; margin-bottom: 16px; flex-wrap: wrap; align-items:center; }
.inline-form input, .inline-form select { padding:8px 10px; border:1px solid var(--border); border-radius:6px; }

.btn { display:inline-block; padding:9px 16px; border-radius:6px; text-decoration:none; font-size:14px; border:none; cursor:pointer; }
.btn-primary { background: var(--primary); color:#fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background:#e5e7eb; color:#111827; }

.badge { padding:3px 8px; border-radius:12px; font-size:12px; text-transform:capitalize; }
.badge-expected { background:#e0e7ff; color:#3730a3; }
.badge-checked_in { background:#dcfce7; color: var(--success); }
.badge-checked_out { background:#f3f4f6; color:#374151; }
.badge-cancelled, .badge-rejected, .badge-expired { background:#fee2e2; color: var(--danger); }
.badge-active { background:#dcfce7; color: var(--success); }
.badge-inactive, .badge-locked { background:#fee2e2; color: var(--danger); }

.alert { padding:10px 14px; border-radius:6px; margin-bottom:16px; font-size:14px; }
.alert-error { background:#fee2e2; color: var(--danger); }
.alert-warn { background:#fef3c7; color: var(--warn); }

.auth-body { display:flex; align-items:center; justify-content:center; height:100vh; background: var(--bg); }
.auth-box { background:#fff; padding:32px; border-radius:10px; width:340px; box-shadow: 0 2px 10px rgba(0,0,0,.06); }
.auth-box h1 { font-size:20px; text-align:center; }
.auth-box label { font-size:13px; color:var(--muted); display:block; margin-top:12px; }
.auth-box input { width:100%; padding:9px 10px; margin-top:4px; border:1px solid var(--border); border-radius:6px; }
.auth-box .btn { width:100%; margin-top:18px; }
.muted { color: var(--muted); font-size: 13px; }

.badge-card { background:#fff; border:2px dashed var(--border); border-radius:10px; padding:20px; max-width:280px; text-align:center; margin-bottom:16px; }

.footer { text-align:center; color: var(--muted); font-size:12px; padding: 20px 0; }