:root{--bg:#f5f7fb;--card:#fff;--ink:#1f2937;--muted:#6b7280;--brand:#0b3b5b;--gold:#c79a3b;--line:#e5e7eb}*{box-sizing:border-box}body{margin:0;font-family:Tahoma,Arial,sans-serif;background:var(--bg);color:var(--ink)}.sidebar{position:fixed;inset-inline-start:0;top:0;width:260px;height:100vh;background:linear-gradient(180deg,#0b3b5b,#08293f);color:#fff;padding:20px;overflow:auto}.brand{display:flex;gap:12px;align-items:center;margin-bottom:24px}.logo{width:44px;height:44px;border-radius:14px;background:var(--gold);display:grid;place-items:center;font-weight:900}.brand small{display:block;color:#cbd5e1}nav a{display:block;color:#fff;text-decoration:none;padding:12px;border-radius:12px;margin:4px 0}nav a:hover{background:rgba(255,255,255,.12)}.main{margin-inline-start:260px;padding:24px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;margin-bottom:18px;box-shadow:0 8px 24px rgba(15,23,42,.05)}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.stat h2{margin:0;color:var(--brand)}table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:start}th{background:#f8fafc}input,select,textarea{width:100%;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fff}label{display:block;margin:8px 0 5px}.row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:10px;padding:10px 14px;text-decoration:none;cursor:pointer}.btn.gold{background:var(--gold)}.badge{padding:4px 8px;border-radius:999px;background:#eef2ff}.login{max-width:430px;margin:8vh auto}.login .brand{color:var(--ink)}@media(max-width:900px){.sidebar{position:static;width:auto;height:auto}.main{margin:0}.grid{grid-template-columns:1fr}.row{grid-template-columns:1fr}}