body { background: #121212; color: white; font-family: sans-serif; display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; }
.card { background: #1e1e1e; padding: 2rem; border-radius: 12px; text-align: center; width: 320px; border: 1px solid #333; }
span { color: #00ff88; }
.price { font-size: 2.5rem; margin: 15px 0; color: #00ff88; font-weight: bold; }
input { width: 100%; padding: 12px; margin-bottom: 20px; border-radius: 5px; border: none; background: #333; color: white; box-sizing: border-box; }
button { width: 100%; padding: 15px; background: #00ff88; border: none; border-radius: 5px; font-weight: bold; cursor: pointer; }
#statusMsg { margin-top: 15px; font-size: 0.9rem; color: #aaa; }