/* === Editorial Review Badge Component === */
.editorial-review-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(67, 97, 238, 0.2);
}

.editorial-review-badge svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.editorial-review-badge .reviewer-name {
    font-weight: 600;
}

.editorial-review-badge .reviewer-title {
    opacity: 0.9;
    font-size: 0.75rem;
}

/* Research Status Badges */
.research-status-badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.research-status-badge.established {
    background: rgba(16, 185, 129, 0.15);
    color: #059669;
}

.research-status-badge.emerging {
    background: rgba(245, 158, 11, 0.15);
    color: #d97706;
}

.research-status-badge.uncertain,
.research-status-badge.limited {
    background: rgba(107, 114, 128, 0.15);
    color: #4b5563;
}

/* Evidence Level Badges */
.evidence-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
}

.evidence-badge.strong,
.evidence-badge.established {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.evidence-badge.moderate,
.evidence-badge.emerging {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.evidence-badge.limited,
.evidence-badge.uncertain {
    background: rgba(107, 114, 128, 0.1);
    color: #6b7280;
}

/* Evidence Types Container */
.evidence-types {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.evidence-type {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    border: 1px solid var(--gray-200);
}

.evidence-type p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text);
    flex: 1;
}

/* Prevalence Note */
.prevalence-note {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--primary);
}

.prevalence-note strong {
    color: var(--primary);
}

/* Content Grid Layout */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
}

@media (max-width: 900px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid .sidebar {
        order: -1;
    }
}

/* Content Section Spacing */
.content-section {
    margin-bottom: 3rem;
}

.content-section h2 {
    color: var(--dark);
    margin-bottom: 1rem;
    font-size: 1.75rem;
}

.content-section p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

/* Section Navigation */
.section-nav {
    position: sticky;
    top: 100px;
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.section-nav h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.section-nav li {
    margin-bottom: 0.5rem;
}

.section-nav a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.section-nav a:hover {
    color: var(--primary);
}

/* Related Conditions Section */
.related-conditions-section {
    margin: 3rem 0;
    padding: 2rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
}

.related-conditions-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.related-condition-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: white;
    border: 1px solid var(--gray-300);
    border-radius: 50px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.related-condition-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Approaches Section */
.approaches-section {
    margin: 3rem 0;
}

.approaches-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.approaches-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.95rem;
}

.approaches-list li:last-child {
    border-bottom: none;
}

/* Quick Facts Sidebar */
.quick-facts {
    list-style: none;
    padding: 0;
    margin: 0;
}

.quick-facts li {
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
}

/* Sidebar Cards (Quick Facts / CTA) */
.sidebar-card,
.sidebar-cta {
    background-color: white;
    border-radius: var(--border-radius, 12px);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow, 0 10px 30px rgba(0, 0, 0, 0.05));
    border: 1px solid var(--gray-200, #e9ecef);
}

.sidebar-card:last-child,
.sidebar-cta:last-child {
    margin-bottom: 0;
}

.sidebar-card h3 {
    color: var(--dark, #212529);
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.sidebar-card h3 + .quick-facts {
    margin-top: 0;
}

.sidebar-cta h4 {
    color: var(--dark, #212529);
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.sidebar-cta p {
    font-size: 0.9rem;
    color: var(--text, #495057);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.sidebar-cta .btn {
    width: 100%;
    justify-content: center;
}

@media (max-width: 768px) {
    .sidebar-card,
    .sidebar-cta {
        padding: 1.25rem;
        margin-bottom: 1.25rem;
    }

    .sidebar-card h3 {
        font-size: 1rem;
    }

    .sidebar-cta h4 {
        font-size: 0.95rem;
    }

    .sidebar-cta p {
        font-size: 0.85rem;
    }
}

/* Lazy Loading Optimization */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* === Reduced Motion Support === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        transition-delay: 0ms !important;
        scroll-behavior: auto !important;
    }
    
    /* Keep essential transitions for focus states */
    .skip-link,
    button:focus-visible,
    a:focus-visible {
        transition: none !important;
    }
    
    /* Disable parallax and scroll-triggered animations */
    .hero,
    .hero-image,
    .card,
    .testimonial {
        animation: none !important;
        transform: none !important;
    }
    
    /* Slider auto-rotation */
    .testimonial-slider {
        animation: none !important;
    }
}

/* === Breadcrumb Navigation === */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb a:hover {
    color: white;
    text-decoration: underline;
}

.breadcrumb .breadcrumb-separator {
    opacity: 0.6;
}

.breadcrumb [aria-current="page"] {
    color: rgba(255, 255, 255, 0.7);
    cursor: default;
}

/* Light background variant for secondary pages */
.secondary-header + section .breadcrumb,
.page-hero .breadcrumb {
    color: rgba(255, 255, 255, 0.8);
}

.secondary-header + section .breadcrumb a,
.page-hero .breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
}

.secondary-header + section .breadcrumb a:hover,
.page-hero .breadcrumb a:hover {
    color: white;
}

/* === Loading State Enhancements === */
.skeleton-loader {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* === Symptom Explorer Two-Column Layout === */
.explorer-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 2rem;
    align-items: start;
}

.symptom-panel,
.results-panel {
    background: white;
    border-radius: var(--border-radius, 12px);
    border: 1px solid var(--gray-200, #e9ecef);
    box-shadow: var(--shadow, 0 10px 30px rgba(0, 0, 0, 0.05));
    padding: 1.5rem;
    min-height: 480px;
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-200, #e9ecef);
}

.panel-header h2 {
    font-size: 1.15rem;
    color: var(--dark, #212529);
    margin: 0;
    font-weight: 600;
}

.text-btn {
    background: transparent;
    color: var(--primary, #4361ee);
    border: none;
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.text-btn:hover {
    color: var(--secondary, #3f37c9);
}

.selected-badge {
    font-size: 0.8rem;
    color: var(--primary, #4361ee);
    font-weight: 600;
    background: rgba(67, 97, 238, 0.08);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--gray-500, #adb5bd);
    flex: 1;
    justify-content: center;
}

.empty-state svg {
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--dark, #212529);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.empty-state p {
    max-width: 28rem;
    font-size: 0.95rem;
    line-height: 1.5;
}

.condition-results {
    flex: 1;
}

.pattern-insights {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--gray-200, #e9ecef);
}

.pattern-insights h3 {
    font-size: 1rem;
    color: var(--dark, #212529);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

/* Stacked mobile layout */
@media (max-width: 900px) {
    .explorer-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .symptom-panel,
    .results-panel {
        min-height: auto;
        padding: 1.25rem;
    }

    .panel-header h2 {
        font-size: 1.05rem;
    }

    .empty-state {
        padding: 2rem 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .skeleton-loader {
        animation: none;
        background: var(--gray-200);
    }
}