body{margin:0;padding:0;background:linear-gradient(to right,#141e30,#243b55);font-family:Arial,sans-serif;color:#f2f2f2;text-align:center}.container{display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px}.card{background:#ffffff1a;border-radius:12px;padding:2rem;width:90%;max-width:500px;text-align:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 4px 12px #0000004d;transition:all .3s ease-in-out}.iban-input{width:calc(100% - 20px);padding:14px;margin-top:10px;font-size:1.2rem;border-radius:8px;border:1px solid #ccc;color:#333;text-align:center;transition:box-shadow .3s ease-in-out,transform .2s ease-in-out;letter-spacing:2px}.iban-input:focus{box-shadow:0 0 10px #1e88e580;transform:scale(1.02)}.iban-input.valid{border:2px solid #28a745;background-color:#28a7451a}.iban-input.invalid{border:2px solid #ff4d4d;background-color:#ff4d4d1a}.check-button{width:100%;padding:12px;margin-top:10px;font-size:1.1rem;border-radius:8px;border:none;background:#1e88e5;color:#fff;font-weight:700;cursor:pointer;transition:transform .2s ease,background .3s ease}.check-button:hover{background:#1565c0;transform:scale(1.05)}.check-button:active{transform:scale(.95)}.copy-button{padding:8px 12px;margin-left:8px;font-size:1rem;border-radius:6px;border:none;background:#28a745;color:#fff;cursor:pointer;transition:background .3s ease}.copy-button:hover{background:#218838}.error-message{color:#ff4d4d;font-size:1rem;margin-top:8px;font-weight:700;animation:fadeIn .5s ease-in-out}.success-message{color:#4caf50;font-size:1rem;margin-top:8px;font-weight:700;animation:fadeIn .5s ease-in-out}.loading-text{color:#f8c400;font-weight:700;animation:blink 1s infinite}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes blink{50%{opacity:.5}}.copy-success{background-color:#28a745;color:#fff;padding:8px 12px;border-radius:5px;position:absolute;bottom:10px;right:10px;opacity:1;transition:opacity .5s ease-in-out}.flag-container{display:flex;justify-content:center;align-items:center;width:120px;height:80px;margin:10px auto}.flag-image{width:120px;height:80px;object-fit:cover;border-radius:8px;box-shadow:0 3px 6px #0000004d;opacity:0;transform:scale(.8);transition:opacity .6s ease,transform .6s ease}.flag-container:hover .flag-image{transform:scale(1.1)}.flag-container .flag-image{opacity:1;transform:scale(1)}.country-select{width:100%;padding:12px;margin-top:10px;font-size:1rem;border-radius:8px;border:1px solid #ccc;color:#333;transition:border .3s ease-in-out}.country-select:focus{border-color:#1e88e5;outline:none}@media (max-width: 480px){.card{padding:1.5rem;max-width:90%}.iban-input,.check-button{font-size:1rem;padding:10px}.flag-image{width:100px;height:65px}}body{font-family:Arial,sans-serif;margin:0;padding:0;background-color:#f8f9fa;text-align:center}