:root{--bg:#0f172a;--panel:#1e293b;--accent:#38bdf8;--accent-2:#22d3ee;--text:#e2e8f0;--muted:#94a3b8;--danger:#f87171;--ok:#34d399}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:linear-gradient(160deg,#0b1220,#0f172a 60%);color:var(--text);min-height:100vh}a{color:var(--accent)}.container{max-width:920px;margin:0 auto;padding:24px}.center{display:flex;min-height:90vh;align-items:center;justify-content:center}.card{background:var(--panel);border:1px solid #334155;border-radius:16px;padding:28px;width:100%;max-width:420px;box-shadow:0 10px 40px rgba(0,0,0,.35)}.brand{font-size:28px;font-weight:800;letter-spacing:-.5px}.brand span{color:var(--accent)}.subtitle{margin-top:4px}.subtitle,label{color:var(--muted)}label{display:block;font-size:13px;margin:14px 0 6px}input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid #334155;background:#0b1220;color:var(--text);font-size:15px}input:focus{outline:2px solid var(--accent);border-color:transparent}button.primary{margin-top:20px;width:100%;padding:13px;border:none;border-radius:10px;background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#04222e;font-weight:700;font-size:15px;cursor:pointer}button.primary:disabled{opacity:.6;cursor:not-allowed}button.ghost{background:transparent;color:var(--muted);border:1px solid #334155;padding:10px 14px;border-radius:10px;cursor:pointer}.error{color:var(--danger);font-size:14px;margin-top:12px}.muted{color:var(--muted)}.row{display:flex;gap:12px;flex-wrap:wrap}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));grid-gap:14px;gap:14px}.tile{background:var(--panel);border:1px solid #334155;border-radius:14px;padding:18px;text-decoration:none;color:var(--text)}.tile:hover{border-color:var(--accent)}.tile h3{margin:8px 0 4px;font-size:16px}.tile p{margin:0;color:var(--muted);font-size:13px}