body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;margin:0;background:linear-gradient(135deg,#f7faff,#f0f4ff)}.payment-container{width:450px;padding:24px;box-sizing:border-box;background:#fffc;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.3);border-radius:16px;box-shadow:0 4px 24px -1px #0000000d}.chat-container{max-height:400px;overflow-y:auto}.chat-container::-webkit-scrollbar{display:none}.chat-container:hover::-webkit-scrollbar{display:block;width:6px}.chat-container:hover::-webkit-scrollbar-track{background:transparent}.chat-container:hover::-webkit-scrollbar-thumb{background-color:#cbd5e1;border-radius:3px}.chat-container:hover::-webkit-scrollbar-thumb:hover{background-color:#94a3b8}.message{display:flex;align-items:flex-start;margin-bottom:8px}.avatar{width:38px;height:38px;border-radius:50%;background:#1a1f36;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#fff;font-weight:600;font-size:20px;line-height:1}.user-avatar{background:#e2e8f0;color:#64748b;font-size:16px}.message-content{background:#f9f9f9;padding:8px 16px;border-radius:8px;max-width:80%;font-size:16px;line-height:1.5}.user-message .message-content{background:#1a1f36;color:#fff;margin-left:auto;margin-right:12px}.input-container{display:flex;gap:12px;align-items:center;position:relative;width:100%}.input-container.amount-input:before{content:"$";position:absolute;left:16px;top:50%;transform:translateY(-50%);color:#64748b;font-size:16px;pointer-events:none}input[type=number],input[type=text]{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;width:100%;padding:0 56px 0 16px;border:1px solid #e2e8f0;border-radius:6px;font-size:16px;transition:border-color .15s ease;height:48px}input[type=number]:focus,input[type=text]:focus{border-color:#1a1f36;box-shadow:0 0 0 1px #1a1f36;outline:none}.amount-input input{padding-left:36px}@keyframes bounce{0%,to{transform:translateY(-50%)}50%{transform:translateY(calc(-50% - 4px))}}button{position:absolute;right:16px;top:50%;transform:translateY(-50%);background:#1a1f36;color:#fff;border:none;border-radius:50%;cursor:pointer;transition:background .15s ease;width:32px;height:32px;display:flex;align-items:center;justify-content:center;padding:0}button:hover:not(:active){background:#2a324f;animation:bounce .8s ease-in-out infinite}button:active{transform:translateY(-50%) scale(.95);animation:none}button:disabled{background:#e2e8f0;cursor:not-allowed}button svg{width:20px;height:20px}.header{margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid #e2e8f0;color:#1a1f36;font-size:16px}.header span{color:#1a1f36;font-weight:600}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.greeting{margin-bottom:32px;color:#1a1f36;font-size:32px;font-weight:600;letter-spacing:-.02em;line-height:1.2;text-align:center;max-width:600px;padding:0 24px}.greeting .time-of-day{background:linear-gradient(135deg,#1a1f36,#363d5b);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.greeting .subtitle{margin-top:8px;font-size:16px;font-weight:400;color:#64748b;letter-spacing:normal}