:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #14213d;
    --muted: #64748b;
    --line: #dbe3f0;
    --soft: #eef2ff;
    --primary: #4f46e5;
    --primary-dark: #3730a3;
    --danger: #dc2626;
    --success: #15803d;
    --warning: #b45309;
    --sidebar: #0f172a;
}
* { box-sizing: border-box; }
html, body { margin:0; padding:0; }
body { font-family: Arial, Helvetica, sans-serif; background:var(--bg); color:var(--text); }
a { color: inherit; text-decoration:none; }
.app-shell { display:flex; min-height:100vh; }
.sidebar { width:260px; background:var(--sidebar); color:#fff; padding:24px; position:sticky; top:0; height:100vh; }
.brand { font-size:28px; font-weight:700; margin-bottom:26px; }
.brand span { color:#a5b4fc; }
.nav { display:grid; gap:10px; }
.nav a { padding:12px 14px; border-radius:12px; background:rgba(255,255,255,.05); font-weight:700; }
.nav a:hover, .nav a.active { background:rgba(255,255,255,.16); }
.content { flex:1; padding:24px; min-width:0; }
.topbar { display:flex; justify-content:space-between; gap:16px; align-items:center; margin-bottom:20px; }
.topbar h1 { margin:0 0 6px; font-size:30px; }
.topbar p { margin:0; color:var(--muted); }
.user-chip { background:#fff; border:1px solid var(--line); border-radius:999px; padding:10px 14px; font-weight:700; }
.alert { padding:14px 16px; border-radius:14px; margin-bottom:16px; border:1px solid var(--line); background:#fff; }
.alert-success { border-color:#bbf7d0; background:#f0fdf4; color:var(--success); }
.alert-error { border-color:#fecaca; background:#fef2f2; color:var(--danger); }
.card, .login-box, .stats-card { background:var(--card); border:1px solid var(--line); border-radius:20px; padding:20px; box-shadow:0 10px 30px rgba(15,23,42,.05); }
.stats-grid, .grid { display:grid; gap:16px; }
.grid-2 { grid-template-columns:repeat(2,minmax(0,1fr)); }
.grid-3 { grid-template-columns:repeat(3,minmax(0,1fr)); }
.grid-4 { grid-template-columns:repeat(4,minmax(0,1fr)); }
.actions { display:flex; flex-wrap:wrap; gap:10px; margin-top:16px; }
.btn { display:inline-block; border:none; background:var(--primary); color:#fff; padding:12px 16px; border-radius:12px; font-weight:700; cursor:pointer; }
.btn:hover { background:var(--primary-dark); }
.btn-secondary { background:#fff; color:var(--text); border:1px solid var(--line); }
.btn-danger { background:var(--danger); }
.btn-warning { background:#f59e0b; }
.btn-small { padding:8px 12px; font-size:14px; }
label { display:block; font-size:14px; font-weight:700; margin-bottom:6px; }
input, select, textarea { width:100%; border:1px solid #c9d5e6; border-radius:12px; padding:12px 14px; font-size:15px; background:#fff; }
textarea { min-height:90px; resize:vertical; }
.help { color:var(--muted); font-size:13px; }
.muted { color:var(--muted); }
.table-wrap { overflow:auto; background:#fff; border:1px solid var(--line); border-radius:20px; }
table { width:100%; border-collapse:collapse; min-width:1100px; }
th, td { border-bottom:1px solid var(--line); border-right:1px solid var(--line); padding:14px; vertical-align:top; background:#fff; }
th { background:#eef2ff; font-size:13px; text-transform:uppercase; letter-spacing:.04em; }
.badge { display:inline-block; padding:6px 10px; border-radius:999px; font-size:12px; font-weight:700; background:#eef2ff; color:var(--primary-dark); }
.badge-warning { background:#fff7ed; color:var(--warning); }
.badge-success { background:#ecfdf5; color:#166534; }
.badge-danger { background:#fef2f2; color:#b91c1c; }
.day-locked { background:#eef2f7; color:#94a3b8; }
.day-locked .locked-note { font-weight:700; }
.day-box { border:1px solid var(--line); border-radius:18px; padding:16px; background:#fbfcff; }
.day-box h3 { margin:0 0 14px; }
.coverage-grid { display:grid; grid-template-columns:repeat(7,minmax(180px,1fr)); gap:14px; overflow:auto; }
.coverage-day { min-width:180px; background:#0f172a; color:#fff; border-radius:18px; padding:16px; }
.coverage-day p { margin:0 0 8px; }
.coverage-day .ok { display:inline-block; background:#ecfdf5; color:#166534; padding:8px 10px; border-radius:999px; font-weight:700; }
.coverage-day .ko { display:block; background:#fff1f2; color:#be123c; padding:8px 10px; border-radius:12px; margin-bottom:8px; font-weight:700; }
.login-page { min-height:100vh; display:grid; place-items:center; padding:20px; }
.login-box { width:min(100%, 460px); }
.mobile-stack { display:grid; gap:12px; }
.stats-grid { grid-template-columns:repeat(4,minmax(0,1fr)); margin-bottom:20px; }
.stats-card h3 { margin:0 0 8px; font-size:14px; color:var(--muted); text-transform:uppercase; letter-spacing:.04em; }
.stats-card strong { font-size:30px; }
.tab-nav { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:14px; }
.tab-nav a { padding:9px 12px; border:1px solid var(--line); border-radius:999px; background:#fff; font-weight:700; }
.tab-nav a.active { background:var(--primary); color:#fff; border-color:var(--primary); }
.inline-note { display:block; margin-top:8px; font-size:12px; color:var(--muted); }
.employee-card { display:grid; gap:8px; }
.summary-list { display:grid; gap:10px; }
.summary-item { display:flex; justify-content:space-between; gap:12px; padding:12px 14px; border:1px solid var(--line); border-radius:14px; background:#fff; }
.kpi-line { height:8px; background:#e2e8f0; border-radius:999px; overflow:hidden; margin-top:8px; }
.kpi-fill { height:100%; background:var(--primary); }
.print-only { display:none; }
@media print {
  .sidebar, .topbar, .actions, .btn, form[action], .no-print { display:none !important; }
  .content { padding:0; }
  .card, .table-wrap { box-shadow:none; border:none; }
  .print-only { display:block; }
}
@media (max-width: 1100px) {
  .app-shell { flex-direction:column; }
  .sidebar { width:100%; height:auto; position:relative; }
  .stats-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width: 800px) {
  .grid-2, .grid-3, .grid-4, .stats-grid { grid-template-columns:1fr; }
  .topbar { flex-direction:column; align-items:flex-start; }
  .coverage-grid { grid-template-columns:1fr; }
  table { min-width:760px; }
  .content { padding:16px; }
}