body { font-family: 'Segoe UI', sans-serif; background: #f4f7f6; display: flex; flex-direction: column; align-items: center; padding: 20px; }
.card { background: white; padding: 2rem; border-radius: 12px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
input { width: 90%; padding: 10px; margin: 10px 0; border: 1px solid #ddd; border-radius: 6px; }
button { background: #4a90e2; color: white; border: none; padding: 10px 20px; border-radius: 6px; cursor: pointer; }