*{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh;font-family:Inter,system-ui,-apple-system,sans-serif;background:linear-gradient(145deg,#0a0a10,#12101f,#0d0b18);color:#e4e4ee;-webkit-font-smoothing:antialiased}#root{min-height:100vh}.not-working-banner{position:fixed;top:0;left:0;right:0;z-index:100;padding:10px 0;text-align:center;font-weight:800;font-size:.85rem;letter-spacing:.25em;text-transform:uppercase;color:#fff;background:linear-gradient(90deg,#e03e3e,#c026d3,#e03e3e);background-size:200% 100%;animation:bannerSlide 4s linear infinite}@keyframes bannerSlide{0%{background-position:0% 0}to{background-position:200% 0}}.page{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 20px 40px;gap:36px}.hero{text-align:center}.logo{font-size:3.5rem;font-weight:900;letter-spacing:.12em;background:linear-gradient(135deg,#a78bfa,#818cf8,#6366f1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.tagline{margin-top:8px;font-size:1.05rem;color:#9896b0;letter-spacing:.04em}.card{width:100%;max-width:420px;padding:36px 32px;border-radius:20px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);box-shadow:0 8px 40px #0006}.input-label{display:block;margin-bottom:10px;font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#8b89a6}.input-wrapper{position:relative;margin-bottom:20px}.input-prefix{position:absolute;left:16px;top:50%;transform:translateY(-50%);font-size:1.25rem;font-weight:600;color:#6c6a85;pointer-events:none}.amount-input{width:100%;padding:16px 16px 16px 40px;font-size:1.25rem;font-weight:600;font-family:inherit;color:#e4e4ee;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:12px;outline:none;transition:border-color .2s,box-shadow .2s;-moz-appearance:textfield}.amount-input::-webkit-inner-spin-button,.amount-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.amount-input::placeholder{color:#4a4865}.amount-input:focus{border-color:#818cf8;box-shadow:0 0 0 3px #818cf826}.breakdown{margin-bottom:24px;padding:16px;border-radius:12px;background:#ffffff08;border:1px solid rgba(255,255,255,.06);animation:fadeIn .25s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.breakdown-row{display:flex;justify-content:space-between;padding:6px 0;font-size:.95rem;color:#9896b0}.breakdown-total{margin-top:8px;padding-top:12px;border-top:1px solid rgba(255,255,255,.08);font-weight:700;font-size:1.05rem;color:#e4e4ee}.checkout-btn{width:100%;padding:16px;font-size:1.05rem;font-weight:700;font-family:inherit;letter-spacing:.04em;color:#fff;background:linear-gradient(135deg,#7c3aed,#6366f1);border:none;border-radius:12px;cursor:pointer;transition:transform .15s,box-shadow .2s,opacity .2s}.checkout-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 24px #6366f159}.checkout-btn:active:not(:disabled){transform:translateY(0)}.checkout-btn:disabled{opacity:.45;cursor:not-allowed}.error-msg{margin-bottom:16px;padding:10px 14px;font-size:.875rem;color:#fca5a5;background:#ef44441a;border:1px solid rgba(239,68,68,.2);border-radius:10px}@media (max-width: 480px){.logo{font-size:2.5rem}.card{padding:28px 20px}}