/* 3D Calculator Specific Styles */
.three-d-calculator {
    background-color: var(--card-bg);
    border-radius: 1rem;
    box-shadow: 0 10px 20px var(--shadow-color);
    padding: 2rem;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

.three-d-calculator h1 {
    text-align: center;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-size: 2.5rem;
}

.subtitle {
    text-align: center;
    color: var(--text-color);
    opacity: 0.7;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Calculator Container */
.calculator-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Shape Controls */
.shape-controls {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
}

.shape-selector h3,
.dimension-controls h3,
.unit-controls h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.shape-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.shape-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    border: 2px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.shape-btn:hover {
    border-color: var(--primary-color);
    background-color: rgba(139, 92, 246, 0.1);
    transform: translateY(-2px);
}

.shape-btn.active {
    border-color: var(--primary-color);
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.shape-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Dimension Controls */
.dimension-inputs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.dimension-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.dimension-group label {
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.dimension-group input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.dimension-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

/* Unit Controls */
.unit-selectors {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.unit-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.unit-group label {
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.unit-group select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 0.9rem;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.unit-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

/* Visualization Section */
.visualization-section {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.canvas-container {
    position: relative;
    width: 100%;
    height: 500px;
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    overflow: hidden;
}

#shapeCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.canvas-controls {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 0.5rem;
    border-radius: 2rem;
}

.canvas-controls button {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.canvas-controls button:hover {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

#zoomSlider {
    width: 100px;
    margin: 0 0.5rem;
}

/* Results Section */
.results-section {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-top: 1rem;
}

.results-section h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.result-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    text-align: center;
}

.result-label {
    color: var(--text-color);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.result-value {
    color: var(--primary-color);
    font-size: 1.2rem;
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

/* Formulas Section */
.formulas-section {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.formulas-section h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.formulas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.formula-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
}

.formula-name {
    color: var(--text-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.formula-expression {
    color: var(--primary-color);
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
}

/* Help Section */
.help-section {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
}

.help-section h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    text-align: center;
}

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

.help-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
}

.help-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.help-item p {
    color: var(--text-color);
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Error States */
.error {
    border-color: #ef4444 !important;
    background-color: rgba(239, 68, 68, 0.1) !important;
}

.error-message {
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: 0.5rem;
    text-align: center;
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .calculator-container {
        grid-template-columns: 1fr;
    }
    
    .shape-controls {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .three-d-calculator {
        padding: 1rem;
    }
    
    .three-d-calculator h1 {
        font-size: 2rem;
    }
    
    .shape-grid {
        grid-template-columns: 1fr;
    }
    
    .canvas-container {
        height: 400px;
    }
    
    .canvas-controls {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .shape-controls {
        grid-template-columns: 1fr;
    }
    
    .canvas-container {
        height: 300px;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}

/* Focus states for accessibility */
.shape-btn:focus,
.dimension-group input:focus,
.unit-group select:focus,
.canvas-controls button:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .shape-btn,
    .dimension-group input,
    .unit-group select {
        border-width: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .shape-btn,
    .canvas-controls button {
        transition: none;
    }
    
    .shape-btn:hover,
    .canvas-controls button:hover {
        transform: none;
    }
    
    .loading::after {
        animation: none;
    }
}