:root {
    --primary: #2c5f8a;
    --primary-dark: #1e4a6f;
    --bg: #f4f6f9;
    --card: #ffffff;
    --border: #e1e5ea;
    --text: #22303f;
    --muted: #6b7a8d;
    --success: #1e7e34;
    --error: #b02a37;
}
* { box-sizing: border-box; }
body { margin:0; font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
.topbar { background: var(--primary-dark); color: #fff; padding: 14px 24px; display:flex; justify-content:space-between; align-items:center; }
.topbar .brand { font-weight: 700; font-size: 1.1rem; }
.user-box { display:flex; gap:16px; align-items:center; font-size:0.9rem; }
.btn-link { color:#cfe3f5; }
.layout { display:flex; min-height: calc(100vh - 54px); }
.sidebar { width: 240px; background:#fff; border-right:1px solid var(--border); padding: 16px 0; flex-shrink:0; }
.sidebar a { display:block; padding:10px 20px; color: var(--text); font-size:0.92rem; }
.sidebar a:hover { background: #eef3f8; }
.sidebar hr { border:none; border-top:1px solid var(--border); margin:10px 0; }
.content { flex:1; padding: 28px 32px; max-width: 1100px; }
.card { background: var(--card); border:1px solid var(--border); border-radius:10px; padding:22px; margin-bottom:22px; }
h1,h2,h3 { color: var(--primary-dark); }
table { width:100%; border-collapse: collapse; background:#fff; }
th, td { padding:10px 12px; border-bottom:1px solid var(--border); text-align:left; font-size:0.92rem; }
th { background:#f0f4f8; }
.btn { display:inline-block; background: var(--primary); color:#fff; padding:9px 16px; border:none; border-radius:6px; cursor:pointer; font-size:0.9rem; }
.btn:hover { background: var(--primary-dark); }
.btn-danger { background: var(--error); }
.btn-secondary { background: #7a8a9a; }
input, select, textarea { padding:9px 10px; border:1px solid var(--border); border-radius:6px; width:100%; font-size:0.92rem; }
label { display:block; margin: 12px 0 5px; font-weight:600; font-size:0.88rem; color: var(--muted); }
form { max-width: 520px; }
.form-wide { max-width: 100%; }
.alert { padding:12px 16px; border-radius:8px; margin-bottom:18px; font-size:0.9rem; }
.alert-success { background:#e6f4ea; color: var(--success); border:1px solid #b7dfc3; }
.alert-error { background:#fbe7e9; color: var(--error); border:1px solid #f0bfc4; }
.login-wrap { display:flex; align-items:center; justify-content:center; height:100vh; }
.login-box { background:#fff; padding:40px; border-radius:12px; box-shadow: 0 4px 24px rgba(0,0,0,0.08); width:340px; }
.badge { display:inline-block; padding:2px 9px; border-radius:20px; font-size:0.75rem; background:#eef3f8; color: var(--primary-dark); }
.grid-2 { display:grid; grid-template-columns: 1fr 1fr; gap:20px; }
.stat { background:#fff; border:1px solid var(--border); border-radius:10px; padding:18px; text-align:center; }
.stat .num { font-size:1.8rem; font-weight:700; color: var(--primary); }
.stat .label { color: var(--muted); font-size:0.85rem; }
.stats-row { display:flex; gap:16px; margin-bottom:24px; flex-wrap:wrap; }
.stats-row .stat { flex:1; min-width:140px; }
@media print {
  .sidebar, .topbar, .no-print { display:none !important; }
  .layout, .content { display:block; width:100%; max-width:100%; padding:0; margin:0; }
}