/* Scientific Calculator Styles */
.scientific-calculator {
    background: white;
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.calculator-display {
    background: #1f2937;
    color: white;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    text-align: right;
    min-height: 80px;
}

.display-expression {
    font-size: 1rem;
    opacity: 0.8;
    min-height: 24px;
    word-break: break-all;
}

.display-result {
    font-size: 2rem;
    font-weight: 600;
    min-height: 36px;
    word-break: break-all;
}

.calculator-buttons-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
}

.calc-btn {
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.calc-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.num-btn {
    background: #f3f4f6;
    color: #1f2937;
}

.op-btn {
    background: #3b82f6;
    color: white;
}

.func-btn {
    background: #6b7280;
    color: white;
    font-size: 0.9rem;
}

.equals-btn {
    background: #10b981;
    color: white;
    grid-column: span 1;
}

.quick-calculations {
    margin-bottom: 2rem;
}

.quick-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
    margin-top: 1rem;
}

.quick-btn {
    padding: 0.75rem;
    background: var(--light-gray);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.quick-btn:hover {
    background: var(--primary);
    color: white;
}

.constants-table table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.constants-table th,
.constants-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.constants-table th {
    background: var(--light-gray);
}

.functions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.function-card {
    background: white;
    padding: 1rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

@media (max-width: 768px) {
    .calculator-buttons-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .calc-btn {
        padding: 0.75rem;
        font-size: 1rem;
    }
    
    .quick-buttons {
        grid-template-columns: 1fr;
    }
}

/* Quick Calculator Modal */
.quick-calc-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.quick-calc-modal .modal-content {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.modal-header {
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--primary);
    padding-bottom: 1rem;
}

.modal-header h3 {
    margin: 0 0 0.5rem 0;
    color: var(--primary);
}

.modal-body {
    margin-bottom: 1.5rem;
}

.modal-footer {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.modal-results {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--light-gray);
    border-radius: var(--radius);
}

.quick-result h4 {
    margin: 0 0 0.5rem 0;
    color: var(--primary);
}

.quick-result.error {
    color: #dc2626;
}