:root{--primary-color: #4a90e2;--secondary-color: #6c63ff;--background-color: #000000;--text-color: #ffffff;--error-color: #e74c3c;--success-color: #2ecc71;--border-color: #333333}body{margin:0;font-family:Open Sans,sans-serif;background-color:var(--background-color);color:var(--text-color)}.app-container{max-width:500px;margin:0 auto;padding:20px;display:flex;flex-direction:column;min-height:100vh}header{display:flex;align-items:center;justify-content:center;flex-direction:column;margin-bottom:20px}header h1{font-family:Poppins,sans-serif;font-weight:400;margin:10px 0;color:#fff}.logo{width:60px;height:60px}main{flex:1;background-color:#111;border-radius:12px;box-shadow:0 4px 12px #00000080;padding:20px;color:#fff}footer{margin-top:20px;text-align:center;font-size:.8rem;color:#999}.payment-result{text-align:center;padding:20px}.success h2{color:var(--success-color)}.error h2{color:var(--error-color)}button{background-color:var(--primary-color);color:#fff;border:none;padding:10px 20px;border-radius:6px;font-size:1rem;cursor:pointer;transition:background-color .2s;margin-top:16px}button:hover{background-color:var(--secondary-color)}.payment-processor{background-color:#000;color:#fff;padding:2rem;border-radius:10px;font-family:Inter,sans-serif;max-width:500px;margin:0 auto;box-shadow:0 4px 12px #00000080}.payment-processor h2{color:#fff;font-size:1.8rem;margin-bottom:1.5rem;text-align:center}.status-message{background-color:#111;padding:1rem;border-radius:5px;margin:1rem 0;text-align:center;color:#fff;font-weight:500}.error-message{background-color:#dc262633;color:#ef4444;padding:1rem;border-radius:5px;margin:1rem 0;text-align:center;border:1px solid rgba(220,38,38,.5)}.payment-details{margin:1.5rem 0;background-color:#111;padding:1rem;border-radius:5px}.payment-details p{margin-top:0;color:#fff}.payment-details ul{color:#fff;padding-left:1.5rem}.payment-details li{margin:.5rem 0}.disclaimer{color:#a1a1aa;margin-top:1.5rem;font-size:.75rem;text-align:center}.loading-spinner{display:flex;justify-content:center;margin:1rem 0}.spinner{width:40px;height:40px;border:4px solid rgba(255,255,255,.1);border-left-color:#fff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}