body{font-family:Inter,Arial,sans-serif}.background{position:relative;width:100vw;height:100vh;background:#daf0ff;display:flex;justify-content:center;align-items:center}.buttons-container{width:100%;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px}.button{height:62px;border-radius:16px;border:none;font-size:2rem;display:flex;justify-content:center;align-items:center;cursor:pointer;transition:filter .2s}.button:active{filter:brightness(.9)}.button.grey{background:#616161;color:#a5a5a5}.button.dark-grey{background:#303136;color:#29a8ff}.button.blue{background:#1991ff;color:#fff;grid-row:span 2;height:136px;margin-top:16px}.ieee-result{color:#a5a5a5;font-size:.9rem;text-align:right;margin-bottom:16px;background:transparent;border-radius:16px;border:none;outline:none;font-family:Inter,Arial,sans-serif;min-height:20px;transition:opacity .2s;opacity:1}.ieee,.mod{display:block;padding:5px 20px;border-radius:8px;background:#303136;color:#29a8ff;font-weight:700;border:none;font-size:.7rem;cursor:pointer;font-family:Inter,Arial,sans-serif}.top-buttons{width:100%;display:flex;justify-content:space-between;align-items:center;margin-bottom:-16px}.ieee,.mod{margin:0}.button.dark-blue{background:#005db2;color:#fff}.button.zero{grid-column:span 2;width:100%;margin-top:16px}.button.dot{margin-top:16px}.input{width:100%;min-height:90px;color:#fff;font-size:2.2rem;text-align:right;margin-bottom:-30px;background:transparent;border-radius:16px;border:none;outline:none;font-family:Inter,Arial,sans-serif}.operation{width:100%;color:#a5a5a5;font-size:1.1rem;text-align:right;margin-bottom:8px;min-height:24px;margin-top:8px;font-family:Inter,Arial,sans-serif;letter-spacing:.5px;transition:opacity .2s;opacity:1}.calculator-shadow{position:absolute;width:300px;height:600px;flex-shrink:0;border-radius:50px;background:#006bb5a1;filter:blur(70px);z-index:0;right:400px;top:40px}.calculator{position:relative;z-index:1;width:315px;min-height:480px;background:linear-gradient(180deg,#17181a 0% 100%);border-radius:39px;box-shadow:0 0 20px #0000001a;display:flex;flex-direction:column;justify-content:space-between;align-items:center;padding:32px 16px 48px}.operation-animate{animation:fadeInUp .4s}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}