.calc-container{padding:var(--sp-3);display:flex;flex-direction:column;height:100%;gap:var(--sp-3);background:#00000014}.calc-display{background:#00000040;border-radius:var(--r-xl);padding:var(--sp-4) var(--sp-5);text-align:right;min-height:90px;display:flex;flex-direction:column;justify-content:flex-end;border:1px solid rgba(255,255,255,.02)}.calc-expression{font-size:var(--fs-sm);color:var(--text-tertiary);margin-bottom:4px;min-height:18px;font-family:var(--font-mono);font-weight:var(--fw-regular)}.calc-result{font-size:var(--fs-4xl);font-weight:var(--fw-light);letter-spacing:var(--ls-tighter);font-variant-numeric:tabular-nums;line-height:1;color:var(--text-primary)}.calc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;flex:1}.calc-btn{border-radius:var(--r-lg);border:none;font-size:var(--fs-lg);font-weight:var(--fw-regular);cursor:pointer;font-family:var(--font-sans);display:flex;align-items:center;justify-content:center;transition:all var(--t-fast) ease;position:relative;overflow:hidden}.calc-btn:active{transform:scale(.94);transition-duration:var(--t-instant)}.calc-btn.number{background:#ffffff0b;color:var(--text-primary)}.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{background:#ffffff05;color:var(--text-secondary);font-size:var(--fs-md)}.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)}