body { background: #181c23; color: #fff; font-family: Arial, sans-serif; margin: 0; }
.container { max-width: 480px; margin: 40px auto; background: #232733; padding: 32px; border-radius: 16px; box-shadow: 0 2px 16px rgba(0,0,0,0.2); }
h1 { text-align: center; }
form label { display: block; margin: 16px 0 8px; }
input[type="text"], textarea { width: 100%; padding: 8px; border-radius: 6px; border: none; margin-top: 4px; }
button { background: #1677ff; color: #fff; border: none; padding: 12px 32px; border-radius: 6px; cursor: pointer; font-size: 18px; margin-top: 16px; }
#preview { margin-top: 32px; text-align: center; }
#downloadLink { margin-top: 16px; display: block; background: #1677ff; color: #fff; padding: 10px 24px; border-radius: 6px; text-decoration: none; }