/* ==============================================================================
   MHB ECOSYSTEM — UNIFIED SEMANTIC SEO & INFORMATION ARCHITECTURE STYLESHEET
   File: seo-content.css
   Compatible with: Dark UI, Glassmorphism, Light Theme, Responsive Mobile-First
   Zero-Conflict: Scoped under .seo-rich-wrapper with zero global element pollution
   ============================================================================== */

:root {
    --seo-bg-card: rgba(22, 22, 26, 0.75);
    --seo-bg-card-hover: rgba(28, 28, 34, 0.85);
    --seo-border: rgba(255, 255, 255, 0.08);
    --seo-border-hover: rgba(200, 245, 66, 0.3);
    --seo-accent: #c8f542;
    --seo-accent-soft: rgba(200, 245, 66, 0.12);
    --seo-text-primary: #f4f4f6;
    --seo-text-secondary: #a1a1aa;
    --seo-text-muted: #71717a;
    --seo-font: 'Vazirmatn', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --seo-radius-sm: 10px;
    --seo-radius-md: 16px;
    --seo-radius-lg: 24px;
    --seo-transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Adaptability */
[data-theme="light"] {
    --seo-bg-card: rgba(255, 255, 255, 0.92);
    --seo-bg-card-hover: #ffffff;
    --seo-border: rgba(226, 232, 240, 0.9);
    --seo-border-hover: rgba(79, 70, 229, 0.35);
    --seo-accent: #4f46e5;
    --seo-accent-soft: rgba(79, 70, 229, 0.08);
    --seo-text-primary: #0f172a;
    --seo-text-secondary: #475569;
    --seo-text-muted: #94a3b8;
}

/* Scoped Container */
.seo-rich-wrapper {
    width: 100%;
    max-width: 1240px;
    margin: 60px auto 30px;
    padding: 0 20px;
    font-family: var(--seo-font);
    direction: rtl;
    text-align: right;
    box-sizing: border-box;
}

/* Typography Hierarchy */
.seo-rich-wrapper h1,
.seo-rich-wrapper h2,
.seo-rich-wrapper h3,
.seo-rich-wrapper h4 {
    color: var(--seo-text-primary);
    font-weight: 800;
    line-height: 1.45;
    margin: 0 0 16px 0;
    letter-spacing: -0.02em;
}

.seo-rich-wrapper h2 {
    font-size: clamp(1.4rem, 2.5vw, 1.95rem);
    position: relative;
    padding-bottom: 12px;
}

.seo-rich-wrapper h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 48px;
    height: 3px;
    background: var(--seo-accent);
    border-radius: 99px;
}

.seo-rich-wrapper h3 {
    font-size: clamp(1.15rem, 1.8vw, 1.35rem);
    font-weight: 700;
}

.seo-rich-wrapper p {
    color: var(--seo-text-secondary);
    font-size: 1.02rem;
    line-height: 1.9;
    margin: 0 0 18px 0;
    font-weight: 400;
}

.seo-rich-wrapper strong {
    color: var(--seo-text-primary);
    font-weight: 700;
}

/* 1. Hero Lead Text */
.seo-lead-paragraph {
    font-size: 1.15rem !important;
    line-height: 2 !important;
    color: var(--seo-text-primary) !important;
    margin-bottom: 32px !important;
    padding: 18px 24px;
    background: var(--seo-bg-card);
    border-right: 4px solid var(--seo-accent);
    border-radius: var(--seo-radius-md);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
}

/* 2. Bento Feature Grid */
.seo-bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    margin: 36px 0 60px;
}

.seo-bento-card {
    background: var(--seo-bg-card);
    border: 1px solid var(--seo-border);
    border-radius: var(--seo-radius-lg);
    padding: 28px 24px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: var(--seo-transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.seo-bento-card:hover {
    transform: translateY(-4px);
    border-color: var(--seo-border-hover);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.25);
}

.seo-bento-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--seo-radius-sm);
    background: var(--seo-accent-soft);
    color: var(--seo-accent);
    font-size: 1.4rem;
    margin-bottom: 18px;
}

/* 3. Below-the-Fold Comprehensive Guide Accordion (<details>) */
.seo-accordion-drawer {
    margin: 40px 0;
}

.seo-accordion {
    background: var(--seo-bg-card);
    border: 1px solid var(--seo-border);
    border-radius: var(--seo-radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--seo-transition);
}

.seo-accordion:hover {
    border-color: var(--seo-border-hover);
}

.seo-accordion[open] {
    border-color: var(--seo-border-hover);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.2);
}

.seo-accordion summary {
    list-style: none;
    cursor: pointer;
    padding: 22px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 700;
    user-select: none;
    color: var(--seo-text-primary);
    transition: var(--seo-transition);
}

.seo-accordion summary::-webkit-details-marker {
    display: none;
}

.seo-accordion summary h3,
.seo-accordion summary .summary-title {
    margin: 0;
    font-size: 1.15rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.seo-accordion summary::after {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-left: 2px solid var(--seo-accent);
    border-bottom: 2px solid var(--seo-accent);
    transform: rotate(-45deg);
    transition: transform 0.3s ease;
    margin-left: 8px;
}

.seo-accordion[open] summary::after {
    transform: rotate(135deg);
}

.seo-accordion-content {
    padding: 0 24px 24px;
    border-top: 1px solid var(--seo-border);
    animation: seoFadeIn 0.35s ease;
}

@keyframes seoFadeIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 4. Comparison Table */
.seo-table-container {
    width: 100%;
    overflow-x: auto;
    margin: 28px 0;
    border-radius: var(--seo-radius-md);
    border: 1px solid var(--seo-border);
    background: var(--seo-bg-card);
}

.seo-comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.96rem;
    text-align: right;
}

.seo-comparison-table th {
    background: var(--seo-accent-soft);
    color: var(--seo-text-primary);
    padding: 16px 20px;
    font-weight: 700;
    border-bottom: 1px solid var(--seo-border);
    white-space: nowrap;
}

.seo-comparison-table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--seo-border);
    color: var(--seo-text-secondary);
}

.seo-comparison-table tr:last-child td {
    border-bottom: none;
}

.seo-comparison-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* 5. Highlight Quote / Alert */
.seo-highlight-quote {
    margin: 24px 0;
    padding: 20px 24px;
    background: var(--seo-accent-soft);
    border-right: 3px solid var(--seo-accent);
    border-radius: var(--seo-radius-sm);
    color: var(--seo-text-primary);
    font-size: 1rem;
    line-height: 1.85;
}

/* 6. Semantic List Structure */
.seo-rich-list {
    list-style: none;
    padding: 0;
    margin: 16px 0 24px;
}

.seo-rich-list li {
    position: relative;
    padding-right: 26px;
    margin-bottom: 12px;
    color: var(--seo-text-secondary);
    line-height: 1.8;
}

.seo-rich-list li::before {
    content: '✔';
    position: absolute;
    right: 0;
    top: 0;
    color: var(--seo-accent);
    font-size: 0.95rem;
    font-weight: 800;
}

/* 7. Hub & Spoke Topic Clusters (Internal Linking Matrix) */
.seo-cluster-section {
    margin: 50px 0 20px;
    padding: 30px 24px;
    background: var(--seo-bg-card);
    border: 1px dashed var(--seo-border);
    border-radius: var(--seo-radius-lg);
}

.seo-cluster-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}

.seo-cluster-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 99px;
    background: var(--seo-accent-soft);
    border: 1px solid var(--seo-border);
    color: var(--seo-text-primary);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 600;
    transition: var(--seo-transition);
}

.seo-cluster-link:hover {
    border-color: var(--seo-accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(200, 245, 66, 0.2);
}

/* Responsive */
@media (max-width: 768px) {
    .seo-rich-wrapper {
        padding: 0 16px;
        margin-top: 40px;
    }
    .seo-bento-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .seo-accordion summary {
        padding: 16px 18px;
    }
    .seo-accordion-content {
        padding: 0 18px 18px;
    }
}