.calc-container{padding:var(--sp-3);gap:var(--sp-3);background:#00000014;flex-direction:column;height:100%;display:flex}.calc-display{border-radius:var(--r-xl);padding:var(--sp-4) var(--sp-5);text-align:right;background:#00000040;border:1px solid #ffffff05;flex-direction:column;justify-content:flex-end;min-height:90px;display:flex}.calc-expression{font-size:var(--fs-sm);color:var(--text-tertiary);min-height:18px;font-family:var(--font-mono);font-weight:var(--fw-regular);margin-bottom:4px}.calc-result{font-size:var(--fs-4xl);font-weight:var(--fw-light);letter-spacing:var(--ls-tighter);font-variant-numeric:tabular-nums;color:var(--text-primary);line-height:1}.calc-grid{flex:1;grid-template-columns:repeat(4,1fr);gap:6px;display:grid}.calc-btn{border-radius:var(--r-lg);font-size:var(--fs-lg);font-weight:var(--fw-regular);cursor:pointer;font-family:var(--font-sans);transition:all var(--t-fast) ease;border:none;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.calc-btn:active{transition-duration:var(--t-instant);transform:scale(.94)}.calc-btn.number{color:var(--text-primary);background:#ffffff0b}.calc-btn.number:hover{background:#ffffff12}.calc-btn.operator{background:var(--neon-cyan-dim);color:var(--neon-cyan);font-weight:var(--fw-medium)}.calc-btn.operator:hover{background:rgba(var(--neon-cyan-rgb), .18)}.calc-btn.function{color:var(--text-secondary);font-size:var(--fs-md);background:#ffffff05}.calc-btn.function:hover{background:#ffffff0a}.calc-btn.equals{background:linear-gradient(135deg, var(--neon-cyan), var(--neon-blue));color:#fff;font-weight:var(--fw-semibold);box-shadow:0 2px 12px rgba(var(--neon-cyan-rgb), .15)}.calc-btn.equals:hover{filter:brightness(1.1);box-shadow:0 4px 16px rgba(var(--neon-cyan-rgb), .25)}