/* Fraction Calculator Specific Styles */

/* Action Buttons */
.btn-action {
    flex: 1;
    min-width: 150px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background-color: var(--white);
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-action:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 51, 102, 0.2);
}

.btn-action svg {
    stroke-width: 2.5;
}

.fraction-input {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    max-width: 250px;
}

.fraction-input input {
    flex: 1;
    text-align: center;
}

.fraction-line {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

.operator-group {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.operator-group select {
    padding: 0.7rem;
    font-size: 1.1rem;
    min-width: 150px;
}

/* Visual Section */
.visual-section {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 4px;
    margin-top: 2rem;
    box-shadow: var(--shadow);
}

.visual-section h3 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.fraction-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.fraction-box {
    text-align: center;
}

.fraction-diagram {
    width: 120px;
    height: 120px;
    border: 3px solid var(--primary-color);
    border-radius: 4px;
    display: flex;
    flex-wrap: wrap;
    overflow: hidden;
    margin: 0 auto 1rem;
}

.fraction-part {
    background-color: var(--primary-color);
    opacity: 0.7;
}

.fraction-part.empty {
    background-color: var(--bg-color);
}

.operator-symbol {
    font-size: 2.5rem;
    color: var(--accent-color);
    font-weight: bold;
}

/* Steps Section */
.steps-section {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 4px;
    margin-top: 2rem;
    box-shadow: var(--shadow);
}

.steps-section h2 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.step-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: var(--bg-color);
    border: 1px solid #ccc;
    border-radius: 4px;
}

.step-title {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.step-content {
    margin-top: 1rem;
    line-height: 1.8;
}

.step-formula {
    margin: 1rem 0;
    padding: 1rem;
    background-color: var(--white);
    border-radius: 4px;
    text-align: center;
}

/* Related Calculators */
.related-section {
    margin-top: 3rem;
    padding: 2rem;
    background-color: var(--white);
    border-radius: 4px;
    box-shadow: var(--shadow);
}

.related-section h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

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

.related-card {
    display: block;
    padding: 1rem;
    background-color: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    text-align: center;
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    transition: all 0.3s ease;
}

.related-card:hover {
    border-color: var(--accent-color);
    background-color: var(--accent-color);
    color: var(--white);
    transform: translateY(-2px);
}

/* Formulas Section */
.formulas-section {
    margin-top: 3rem;
    padding: 2rem;
    background-color: var(--white);
    border-radius: 4px;
    box-shadow: var(--shadow);
}

.formulas-section h2 {
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.formula-block {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: var(--bg-color);
    border-radius: 4px;
}

.formula-block h4 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.formula-content {
    padding: 1rem;
    background-color: var(--white);
    border-radius: 4px;
    text-align: center;
    font-size: 1.1rem;
}

/* Result Display Enhancements */
.result-formats {
    display: grid;
    gap: 1rem;
    margin-top: 1rem;
}

.format-item {
    padding: 1rem;
    background-color: var(--bg-color);
    border: 1px solid #ccc;
    border-radius: 4px;
}

.format-label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    display: block;
}

.format-value {
    font-size: 1.3rem;
    color: var(--text-color);
    display: block;
}

/* Example Box Styles */
.example-box {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8f0f7 100%);
    border-radius: 4px;
    border: 1px solid #ccc;
    box-shadow: 0 4px 6px rgba(0, 51, 102, 0.1);
}

.example-box h5 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.example-box h5:first-child {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.example-box h5:first-child::before {
    content: "💡";
    font-size: 1.3rem;
}

.example-steps {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 4px;
    margin-top: 1rem;
}

.example-steps p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.example-steps p:last-child {
    margin-bottom: 0;
    padding-top: 1rem;
    border-top: 2px dashed var(--accent-color);
    font-weight: 600;
}

.example-steps strong {
    color: var(--accent-color);
    font-weight: 600;
}

/* KaTeX Formula Responsive Styles */
.katex-display {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    padding: 0.5rem 0;
}

.katex {
    font-size: 1em !important;
}

.formula-content .katex-display {
    margin: 1rem 0;
}

.example-box .katex {
    font-size: 1.1em !important;
}

.example-box .katex-display {
    margin: 0.5em 0;
}

.example-steps .katex-display {
    margin: 0.8rem 0;
}

/* FAQs Section */
.faq-item {
    background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
    padding: 1.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.faq-item p {
    color: #555;
    line-height: 1.7;
}

/* Expert Section */
.expert-section {
    margin: 3rem 0;
    padding: 2rem;
    background: linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 100%);
    border-radius: 4px;
}

.expert-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.expert-badge svg {
    stroke-width: 3;
}

.expert-card {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 2rem;
    background: white;
    padding: 2rem;
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.expert-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent-color);
}

.expert-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.expert-title {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.expert-bio {
    color: #555;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.expert-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #0077b5;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.expert-linkedin:hover {
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .fraction-visual {
        flex-direction: column;
    }
    
    .operator-symbol {
        font-size: 2rem;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .example-box {
        padding: 1rem;
    }
    
    .example-steps {
        padding: 1rem;
    }
    
    /* KaTeX formulas on mobile */
    .katex {
        font-size: 0.9em !important;
    }
    
    .katex-display {
        font-size: 0.85em;
    }
    
    .example-box .katex {
        font-size: 0.95em !important;
    }
    
    .formulas-section {
        padding: 1.5rem;
    }
    
    .formula-block {
        padding: 1rem;
    }
    
    .expert-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .expert-image {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .fraction-input {
        flex-wrap: wrap;
    }
    
    /* Smaller KaTeX on very small screens */
    .katex {
        font-size: 0.85em !important;
    }
    
    .katex-display {
        font-size: 0.8em;
    }
    
    .example-box .katex {
        font-size: 0.85em !important;
    }
    
    .visual-section {
        padding: 1.5rem;
    }
    
    .steps-section {
        padding: 1.5rem;
    }
    
    .formulas-section {
        padding: 1rem;
    }
}