body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #0f0f0f;
    color: white;
}
.container { max-width: 900px; margin: auto; padding: 20px; }
.card { background: #1c1c1c; padding: 16px; border-radius: 12px; margin-bottom: 12px; }
button, select, input { padding: 10px; border-radius: 8px; border: none; margin-top: 10px; }
button { background: #4f46e5; color: white; cursor: pointer; }
a { color: #60a5fa; }