:root{color:#0f172a;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#0f172a;font-family:Montserrat,Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-weight:400;line-height:1.5}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{min-width:320px}.app-shell{box-sizing:border-box;background:radial-gradient(circle at top,#6366f140,#0000 30%),linear-gradient(135deg,#0f172a,#1e1b4b 55%,#111827);place-items:center;min-height:100vh;padding:24px;display:grid}.swap-card{box-sizing:border-box;background:#fffffff5;border:1px solid #ffffff73;border-radius:28px;width:100%;max-width:520px;padding:32px;box-shadow:0 24px 80px #0f172a59,inset 0 1px #ffffff73}.swap-card__header{margin-bottom:28px}.swap-eyebrow{letter-spacing:.08em;text-transform:uppercase;color:#6366f1;margin:0 0 8px;font-size:13px;font-weight:700}.swap-title{color:#0f172a;margin:0 0 8px;font-size:34px;line-height:1.1}.swap-subtitle{color:#475569;margin:0;font-size:15px;line-height:1.5}.field-group{margin-bottom:20px}.field-label{color:#334155;margin-bottom:10px;font-size:14px;font-weight:600;display:inline-block}.amount-input,.currency-select{color:#0f172a;box-sizing:border-box;background:#fff;border:1px solid #d4d4d8;border-radius:16px;outline:none;width:100%;height:54px;padding:0 16px;font-size:16px;transition:border-color .2s,box-shadow .2s}.amount-input.error{border-color:#ef4444;box-shadow:0 0 0 2px #ef44441f}.amount-input:focus,.currency-select:focus{background:#fff;border-color:#6366f1;box-shadow:0 0 0 4px #6366f124}.amount-input:hover,.currency-select:hover{border-color:#a5b4fc}.swap-row{grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;display:grid}.swap-arrow{color:#4f46e5;cursor:pointer;-webkit-user-select:none;user-select:none;background:linear-gradient(135deg,#eff6ff,#ede9fe);border-radius:50%;place-items:center;width:52px;height:52px;font-size:24px;font-weight:700;transition:transform .2s,box-shadow .2s,background .2s;display:grid}.swap-arrow:hover{transform:rotate(180deg);box-shadow:0 8px 20px #4f46e529}.swap-arrow:active{transform:scale(.96)}.rate-panel{background:linear-gradient(#f8fafc,#f1f5f9);border:1px solid #e2e8f0;border-radius:18px;margin-bottom:18px;padding:18px}.rate-line,.receive-line{color:#334155;margin:0;line-height:1.6}.receive-line{margin-top:8px}.receive-line strong{color:#0f172a}.rate-line strong{color:#312e81}.error-text{color:#b91c1c;background:#fef2f2;border:1px solid #fecaca;border-radius:14px;margin:0 0 16px;padding:12px 14px;font-size:14px;font-weight:600}.swap-button{cursor:pointer;color:#fff;background:linear-gradient(90deg,#3b82f6,#8b5cf6);border:none;border-radius:18px;width:100%;height:56px;font-size:18px;font-weight:700;transition:transform .15s,opacity .15s,box-shadow .15s;box-shadow:0 14px 28px #6366f147}.swap-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 18px 32px #6366f157}.swap-button:active:not(:disabled){transform:translateY(0)}.swap-button:disabled{cursor:not-allowed;opacity:.75;box-shadow:none;transform:none}.helper-text{color:#64748b;margin:-6px 0 18px;font-size:13px}@media (width<=640px){.swap-card{border-radius:24px;padding:24px}.swap-title{font-size:28px}.swap-subtitle{font-size:14px}.swap-row{grid-template-columns:1fr}.swap-arrow{border-radius:14px;width:100%;height:44px}.rate-panel{padding:16px}}