:root{--bg:#eef3f8;--surface:#fff;--ink:#132238;--muted:#5e6d80;--brand:#075985;--accent:#f59e0b;--danger:#b91c1c;--ok:#166534}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 system-ui,-apple-system,Segoe UI,sans-serif}header{background:#0b253f;color:#fff;padding:16px max(20px,5vw);display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}header strong{font-size:20px}nav{display:flex;gap:8px;flex-wrap:wrap}nav a{color:#fff;text-decoration:none;padding:7px 10px;border-radius:6px}nav a:hover{background:#173f61}main{max-width:1180px;margin:28px auto;padding:0 20px}.login{min-height:100vh;display:grid;place-items:center;max-width:480px}.card{background:var(--surface);border:1px solid #ccd8e5;border-radius:12px;padding:22px;box-shadow:0 8px 24px #15314c12}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stats b{display:block;font-size:34px;color:var(--brand)}.stats small{color:var(--muted)}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form{display:grid;gap:14px;max-width:850px}label{display:grid;gap:6px;font-weight:650}input,select,textarea{width:100%;border:1px solid #aebed0;border-radius:7px;padding:10px 12px;background:#fff;color:#111827;font:inherit}textarea{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}button{border:0;border-radius:7px;background:var(--brand);color:#fff;padding:10px 15px;font-weight:700;cursor:pointer}button:hover{filter:brightness(1.12)}button:disabled{opacity:.5}table{width:100%;border-collapse:collapse;background:#fff;margin-top:20px;border-radius:10px;overflow:hidden}th,td{padding:11px;border-bottom:1px solid #dbe4ee;text-align:left}th{background:#dce9f5}.alert{padding:12px 15px;border-radius:8px;margin:12px 0}.alert.success{background:#dcfce7;color:var(--ok)}.alert.error{background:#fee2e2;color:var(--danger)}@media(max-width:760px){.stats,.grid2{grid-template-columns:1fr}table{display:block;overflow:auto}}