body { font-family: Arial, sans-serif; margin: 0; background: #0f172a; color: #e2e8f0; }
a { color: #93c5fd; text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 900px; margin: 0 auto; padding: 20px; }
.nav { display:flex; gap:14px; padding: 14px 20px; background:#111827; border-bottom:1px solid #1f2937; }
.card { background:#111827; border:1px solid #1f2937; border-radius:12px; padding:16px; margin-top:16px; }
.btn { background:#2563eb; color:white; border:0; padding:10px 14px; border-radius:10px; cursor:pointer; }
.btn:hover { filter: brightness(1.1); }
input { padding:10px; border-radius:10px; border:1px solid #334155; background:#0b1220; color:#e2e8f0; width:320px; }