body{background:linear-gradient(45deg,#030717,#070317);min-height:100vh;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.currency-card{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;box-shadow:0 20px 40px #0000001a;border:1px solid rgba(160,123,123,.2)}.form-control:focus{border-color:#0c1025;box-shadow:0 0 0 .2rem #686e8a40}.btn-primary{background:linear-gradient(45deg,#090c1a,#130f30);border:none;border-radius:10px;padding:12px 30px;font-weight:600;transition:all .3s ease}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 20px #0003}.currency-select{border-radius:10px;border:2px solid #e9ecef;transition:all .3s ease}.currency-select:focus{border-color:#667eea;box-shadow:0 0 0 .2rem #667eea40}.result-card{background:linear-gradient(45deg,#102232,#061112);color:#fff;border-radius:15px;padding:20px;text-align:center;margin-top:20px}.currency-icon{font-size:2rem;margin-bottom:10px}.loading{text-align:center;padding:20px}.spinner-border{color:#d3d5dd}.exchange-icon{background:#0b031c;color:#fff;border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;margin:0 auto;cursor:pointer;transition:transform .3s ease}.text-primary{color:#fdfdfd!important}.exchange-icon:hover{transform:rotate(180deg)}@media (max-width: 768px){.container{padding:20px 15px}.currency-card{margin:20px 0}}