:root {
  --bg: #10141a;
  --surface: #1a2332;
  --border: #2c3950;
  --text: #e8edf4;
  --muted: #95a6be;
  --accent: #3b82f6;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, sans-serif; background: var(--bg); color: var(--text); }

.layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { background: var(--surface); border-right: 1px solid var(--border); padding: 1rem; }
.brand { font-weight: 700; margin-bottom: 1rem; }
.brand span { color: var(--accent); }
.nav-link { display: block; color: var(--muted); padding: 0.5rem 0.65rem; border-radius: 8px; text-decoration: none; }
.nav-link:hover { color: var(--text); background: #243044; }
.sidebar-footer { margin-top: 2rem; font-size: 0.85rem; color: var(--muted); }

.main { padding: 1.5rem; max-width: 1200px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1rem; margin-bottom: 1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }

.flash { padding: 0.65rem 0.8rem; border-radius: 8px; margin-bottom: 0.8rem; }
.flash-success { background: rgba(34,197,94,0.14); color: #68ef95; }
.flash-error { background: rgba(239,68,68,0.14); color: #ff8c8c; }

.btn { border: 0; border-radius: 8px; padding: 0.6rem 1rem; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-block; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-secondary { background: #243044; color: var(--text); border: 1px solid var(--border); }
.btn-block { width: 100%; }
.btn-link { background: transparent; border: 0; color: var(--accent); cursor: pointer; padding: 0; margin-top: 0.5rem; }

.form-group { margin-bottom: 0.8rem; }
label { display: block; margin-bottom: 0.35rem; color: var(--muted); }
input, select { width: 100%; border: 1px solid var(--border); border-radius: 8px; padding: 0.6rem 0.7rem; background: #0f1419; color: var(--text); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.6rem 0.45rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; }

.badge { display: inline-block; padding: 0.2rem 0.55rem; border-radius: 999px; font-size: 0.75rem; }
.badge-success { color: #7bf1a8; background: rgba(34,197,94,0.16); }
.badge-warning { color: #ffd27a; background: rgba(245,158,11,0.16); }
.badge-muted { color: var(--muted); background: #243044; }
.badge-admin { color: #9fc3ff; background: rgba(59,130,246,0.16); }

.stat { font-size: 2rem; font-weight: 700; }
.stat-label { color: var(--muted); }
.empty-state { color: var(--muted); padding: 1rem 0; text-align: center; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 1rem; align-items: end; }
.punch-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1rem; }
.punch-actions form { flex: 1; min-width: 180px; }

.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card { width: 100%; max-width: 420px; }
.subtitle { color: var(--muted); margin-bottom: 1rem; }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
}