:root{--primary-color:#1e90ff;--secondary-color:#fff;--card-bg:#f5f9ff;--text-color:#333;--button-bg:var(--primary-color);--button-color:var(--secondary-color);--border-radius:8px}*{box-sizing:border-box;margin:0;padding:0}a{color:inherit;text-decoration:none}ul li{list-style:none}body{background-color:#050f49}body,input,select,button,textarea{font-family:Montserrat,sans-serif}main{justify-content:center;align-items:center;height:100vh;padding:16px;display:flex}.currency-card{background-color:var(--card-bg);border-radius:var(--border-radius);text-align:center;padding:32px;box-shadow:0 4px 10px #0000001a}.currency-card h1{color:var(--primary-color);margin-bottom:24px}.currency-row{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-bottom:16px;display:flex}.input-group{display:flex}.input-group input{border:1px solid #ccc;flex:1;padding:8px}.input-group select{background-color:var(--secondary-color);cursor:pointer;border:1px solid #ccc;border-left:none;width:80px;padding:8px}.left-group input{border-top-left-radius:var(--border-radius);border-bottom-left-radius:var(--border-radius);border-right:none;flex:1}.left-group select{border-top-right-radius:var(--border-radius);border-bottom-right-radius:var(--border-radius);border-left:none;width:80px}.right-group select{border-top-left-radius:var(--border-radius);border-bottom-left-radius:var(--border-radius);border-right:none;width:80px}.right-group input{border-top-right-radius:var(--border-radius);border-bottom-right-radius:var(--border-radius);border-left:none;flex:1}.switch-btn{border-radius:var(--border-radius);background-color:var(--button-bg);color:var(--button-color);cursor:pointer;border:none;padding:10px 16px}.switch-btn:hover{opacity:.9}.convert-btn{border-radius:var(--border-radius);background-color:var(--button-bg);color:var(--button-color);cursor:pointer;border:none;margin-top:16px;padding:10px 20px}.convert-btn:hover{opacity:.9}