/* ═══════════════════════════════════════════════
   CALCULATOR WINDOW
   ═══════════════════════════════════════════════ */
.calc-body {
    padding: 16px !important;
    display: flex;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.4);
    gap: 12px;
}

.calc-display {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    text-align: right;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.calc-history {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
    min-height: 14px;
}

.calc-current {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    flex: 1;
}

.calc-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 1.2rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    justify-content: center;
    align-items: center;
}

.calc-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.calc-btn:active {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(0.95);
}

.calc-op {
    color: var(--accent-secondary);
    background: rgba(0, 229, 255, 0.05);
}

.calc-equal {
    background: var(--accent);
    color: white;
}

.calc-equal:hover {
    background: #8b6dfc;
}

.calc-zero {
    grid-column: span 2;
}