.calc-container{max-width:400px;margin:0 auto;background:rgba(15,23,42,.6);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:24px;padding:2rem;border:1px solid hsla(0,0%,100%,.1);box-shadow:0 25px 50px -12px rgba(0,0,0,.5)}.calc-display{background:rgba(0,0,0,.3);border-radius:16px;padding:1.5rem;margin-bottom:1.5rem;text-align:right;border:1px inset hsla(0,0%,100%,.05);box-shadow:inset 0 2px 10px rgba(0,0,0,.5)}.calc-display-prev{font-size:1rem;color:var(--text-secondary);min-height:1.5rem}.calc-display-current{font-size:2.5rem;color:var(--text-primary);font-weight:700;font-family:Outfit,sans-serif;overflow-x:hidden;text-overflow:ellipsis}.calc-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:1rem;gap:1rem}.calc-btn{background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);border-radius:12px;padding:1rem 0;font-size:1.25rem;color:var(--text-primary);cursor:pointer;transition:all .2s ease;font-weight:600;display:flex;justify-content:center;align-items:center}.calc-btn:hover{background:hsla(0,0%,100%,.1);transform:translateY(-2px)}.calc-btn:active{transform:translateY(1px)}.calc-btn-op{background:rgba(var(--accent-2-rgb),.15);color:var(--accent-2);border-color:rgba(var(--accent-2-rgb),.3)}.calc-btn-op:hover{background:rgba(var(--accent-2-rgb),.25)}.calc-btn-eq{background:linear-gradient(135deg,var(--accent-1),var(--accent-2));color:#fff;border:none;grid-column:span 2;box-shadow:0 4px 15px var(--glow-color)}.calc-btn-eq:hover{filter:brightness(1.1);box-shadow:0 6px 20px rgba(var(--accent-1-rgb),.6)}.calc-btn-clear{color:#ef4444;background:rgba(239,68,68,.1)}