:root { --bg:#0b1220; --card:#121a2b; --fg:#e7eefc; --muted:#a6b0c9; --acc:#6aa1ff; }
*{box-sizing:border-box} html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px ui-sans-serif,system-ui,Segoe UI,Roboto,Helvetica,Arial}
.center{display:grid;place-items:center;height:100vh}
.card{background:var(--card);padding:24px;border-radius:16px;box-shadow:0 8px 24px rgba(0,0,0,.35)}
.card.small{padding:16px}
.card h1,h2,h3{margin:0 0 12px}
label{display:block;margin:12px 0;color:var(--muted)}
input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid #223;outline:none;background:#0e1627;color:var(--fg)}
button,.button{display:inline-block;padding:12px 16px;border:0;border-radius:12px;background:var(--acc);color:#081325;font-weight:700;cursor:pointer;text-decoration:none}
.button.ghost{background:transparent;border:1px solid #2a3550;color:var(--fg)}
.error{background:#3b1220;color:#ffd7d7;border:1px solid #5a1a2b;padding:8px 10px;border-radius:8px;margin:8px 0}
.hint{color:var(--muted);font-size:.85rem}
.nav{display:flex;justify-content:space-between;align-items:center;padding:12px 18px;background:#0f182a;position:sticky;top:0}
.container{padding:18px;max-width:1100px;margin:0 auto}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;margin-bottom:18px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:8px;border-bottom:1px solid #25314a}
@media (max-width:900px){.grid{grid-template-columns:1fr}}