/* Matrix-Vector Multiplication Tutorial Styles */

.tutorial-container {
    background: var(--bg-primary);
    min-height: 100vh;
}

.tutorial-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.tutorial-header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.tutorial-meta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tutorial-category,
.tutorial-difficulty,
.tutorial-duration {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.tutorial-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.tutorial-description {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.tutorial-main {
    padding: 4rem 0;
}

.tutorial-main .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.tutorial-section {
    margin-bottom: 4rem;
}

.tutorial-section h2 {
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.tutorial-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.concept-box {
    background: var(--bg-secondary);
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 0.5rem 0.5rem 0;
}

.concept-box h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* Interactive Visualization Styles */
.interactive-section {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
}

.visualization-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    align-items: start;
}

.controls-panel {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    height: fit-content;
}

.controls-panel h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.matrix-input {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.matrix-row {
    display: contents;
}

.matrix-input input {
    width: 100%;
    padding: 0.5rem;
    border: 2px solid var(--border-light);
    border-radius: 0.25rem;
    text-align: center;
    font-weight: 500;
    transition: border-color 0.3s ease;
}

.matrix-input input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(139, 166, 138, 0.1);
}

.vector-input {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.vector-input label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.vector-input input {
    flex: 1;
    padding: 0.5rem;
    border: 2px solid var(--border-light);
    border-radius: 0.25rem;
    text-align: center;
    transition: border-color 0.3s ease;
}

.vector-input input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(139, 166, 138, 0.1);
}

.preset-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.btn-preset {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.btn-preset:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.canvas-container {
    background: white;
    border-radius: 0.5rem;
    padding: 1rem;
    box-shadow: var(--shadow-sm);
    text-align: center;
}

#visualizationCanvas {
    border: 2px solid var(--border-light);
    border-radius: 0.5rem;
    background: #fafafa;
    cursor: crosshair;
    margin-bottom: 1rem;
}

.canvas-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    text-align: left;
}

.vector-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.vector-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Courier New', monospace;
    font-weight: 500;
}

.vector-label {
    color: var(--text-secondary);
    font-weight: 400;
    font-family: inherit;
}

.transformation-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-label {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Mathematical Display */
.math-display {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 0.5rem;
    margin: 2rem 0;
    text-align: center;
    overflow-x: auto;
}

.matrix-equation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    font-family: 'Times New Roman', serif;
    font-size: 1.2rem;
}

.matrix-2x2,
.vector-2d,
.result-vector {
    display: flex;
    align-items: center;
    position: relative;
}

.matrix-bracket,
.vector-bracket {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    line-height: 1;
}

.matrix-content,
.vector-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem 1rem;
    padding: 0 1rem;
    font-size: 1.2rem;
    font-weight: 500;
}

.vector-content {
    grid-template-columns: 1fr;
}

.equals {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
}

/* Calculation Steps */
.calculation-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-color);
}

.step h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.step-math {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.25rem;
    font-family: 'Courier New', monospace;
    font-weight: 500;
    margin-top: 0.5rem;
}

/* Interpretation Grid */
.interpretation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.interpretation-item {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    border-top: 3px solid var(--primary-color);
}

.interpretation-item h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.interpretation-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* Practice Section */
.practice-section {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 1rem;
}

.practice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.practice-problem {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.practice-problem h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.practice-problem p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.btn-practice {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    width: 100%;
}

.btn-practice:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Takeaways */
.takeaways {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 2rem;
    border-radius: 1rem;
}

.takeaways h2 {
    color: white;
    border-bottom: 3px solid white;
}

.takeaways-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.takeaways-list li {
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 0.5rem;
    border-left: 4px solid white;
}

.takeaways-list li:last-child {
    margin-bottom: 0;
}

.takeaways-list strong {
    color: var(--butter-yellow);
}

/* Responsive Design */
@media (max-width: 768px) {
    .tutorial-title {
        font-size: 2rem;
    }
    
    .tutorial-description {
        font-size: 1.1rem;
    }
    
    .visualization-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .controls-panel {
        order: 2;
    }
    
    .canvas-container {
        order: 1;
    }
    
    .canvas-info {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .matrix-equation {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .matrix-bracket,
    .vector-bracket {
        font-size: 2rem;
    }
    
    .interpretation-grid {
        grid-template-columns: 1fr;
    }
    
    .practice-grid {
        grid-template-columns: 1fr;
    }
    
    .tutorial-meta {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .tutorial-header {
        padding: 2rem 0;
    }
    
    .tutorial-main {
        padding: 2rem 0;
    }
    
    .tutorial-main .container {
        padding: 0 1rem;
    }
    
    .tutorial-section h2 {
        font-size: 1.5rem;
    }
    
    #visualizationCanvas {
        width: 100%;
        height: auto;
        max-width: 400px;
    }
    
    .matrix-input {
        grid-template-columns: 1fr;
    }
    
    .matrix-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
}