.calc-display{min-height:76px;font-size:2rem;font-weight:700;text-align:right;padding:0.75rem 1rem;border-radius:12px;background:linear-gradient(135deg,rgba(13,110,253,0.06),rgba(13,110,253,0.01));border:1px solid rgba(13,110,253,0.12);overflow-x:auto;white-space:nowrap;word-break:break-all}[data-bs-theme="dark"] .calc-display{background:linear-gradient(135deg,rgba(13,110,253,0.12),rgba(0,0,0,0.2));border-color:rgba(13,110,253,0.2)}.calc-keypad{display:grid;grid-template-columns:repeat(4,1fr);gap:0.5rem;margin-top:1rem}.calc-key{height:52px;font-weight:700;font-size:1.05rem;border-radius:10px}.calc-key.calc-key-wide{grid-column:span 4;height:52px}.calc-key-mem{font-size:0.8rem;height:42px}#memory-indicator{font-size:0.7rem;vertical-align:middle}.calc-history-panel{max-height:420px;overflow-y:auto}.feature-card{transition:transform 0.3s ease}.feature-card:hover{transform:translateY(-5px)}@media (max-width:576px){.calc-display{font-size:1.5rem}.calc-key{height:46px;font-size:0.95rem}}