:root {
  --bg: #fafafa; --card: #fff; --border: #e4e4e7; --text: #18181b; --muted: #71717a;
  --primary: #18181b; --primary-fg: #fff; --danger: #dc2626; --radius: 8px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 240px; background: var(--card); border-right: 1px solid var(--border); padding: 1rem; display: none; }
.sidebar.open { display: block; }
@media (min-width: 768px) { .sidebar { display: block; } .menu-btn { display: none !important; } }
.logo { height: 48px; margin-bottom: 1.5rem; }
.nav a { display: block; padding: .6rem .75rem; border-radius: var(--radius); color: var(--muted); margin-bottom: .25rem; }
.nav a.active, .nav a:hover { background: #f4f4f5; color: var(--text); }
.main { flex: 1; padding: 1rem 1.25rem 2rem; max-width: 1100px; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.25rem; }
.menu-btn { background: none; border: 1px solid var(--border); border-radius: var(--radius); padding: .4rem .6rem; cursor: pointer; }
h1 { font-size: 1.5rem; margin: 0 0 .25rem; }
.sub { color: var(--muted); font-size: .875rem; margin-bottom: 1.25rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; margin-bottom: 1rem; }
.card h2 { font-size: 1rem; margin: 0 0 .75rem; }
.grid2 { display: grid; gap: .75rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 640px) { .grid2 { grid-template-columns: 1fr; } }
label { display: block; font-size: .8rem; color: var(--muted); margin-bottom: .25rem; }
input, select, textarea { width: 100%; padding: .5rem .65rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
textarea { min-height: 80px; resize: vertical; }
.btn { display: inline-flex; align-items: center; gap: .35rem; padding: .5rem .9rem; border-radius: var(--radius); border: 1px solid var(--border); background: #fff; cursor: pointer; }
.btn:hover { background: #f4f4f5; }
.btn-primary { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }
.btn-primary:hover { opacity: .9; }
.btn-danger { color: var(--danger); border-color: #fecaca; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: .6rem .5rem; border-bottom: 1px solid var(--border); }
.table th { color: var(--muted); font-size: .75rem; text-transform: uppercase; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: .75rem; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; }
.stat .v { font-size: 1.4rem; font-weight: 600; }
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.login-card { width: 100%; max-width: 380px; }
.err { background: #fef2f2; color: var(--danger); padding: .5rem .75rem; border-radius: var(--radius); margin-bottom: .75rem; font-size: .875rem; }
.badge { display: inline-block; font-size: .7rem; font-weight: 600; text-transform: uppercase; padding: .15rem .45rem; border-radius: 4px; background: #f4f4f5; }
.row { display: flex; gap: .5rem; flex-wrap: wrap; align-items: end; }
.flex1 { flex: 1; }
@media print {
  body * { visibility: hidden; }
  #print-area, #print-area * { visibility: visible; }
  #print-area { position: absolute; left: 0; top: 0; width: 100%; padding: 2rem; }
}