:root {
    /* Premium Rasvya Brand Palette */
    --rasvya-gold: #C79A2B;
    --rasvya-gold-dark: #D4A017; /* #A97B18; */ 
    --rasvya-black: #111111;
    --rasvya-white: #FFFFFF;
    
    /* Subtle structural colours */
    --rasvya-border: #EAEAEA;
    --rasvya-background: #FFFFFF; 
    --rasvya-surface: #FAFAFA;
    
    /* Typography colours */
    --rasvya-text: #222222;
    --rasvya-text-secondary: #555555;
    --rasvya-text-muted: #888888;
    
    /* Semantic colours */
    --rasvya-danger: #D32F2F;
    --rasvya-success: #2E7D32;
    --rasvya-info: #1976D2;

    /* Added: Dynamic Font Size Variable for Text Editors */
    --editor-font-size: 16px;
}

/* Force pure white background on single pages */
body.single-rasvya_research { background-color: var(--rasvya-white) !important; }
.single-rasvya_research .entry-header { display: none !important; }
.single-rasvya_research .site-main { padding-top: 0 !important; background: var(--rasvya-white) !important; }

/* 1. Global Reset & Typography */
.rasvya-portal-container {
    background-color: var(--rasvya-white);
    color: var(--rasvya-text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.8;
}

/* Elegant Serif Headings */
.rasvya-portal-container h1, 
.rasvya-portal-container h2, 
.rasvya-portal-container h3,
.rasvya-toc-target summary {
    font-family: ui-serif, Georgia, Cambria, 'Times New Roman', Times, serif;
    color: var(--rasvya-black);
    font-weight: 400;
}

.rasvya-category-badge {
    display: inline-block;
    background: var(--rasvya-gold-dark);
    color: var(--rasvya-white);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 15px;
}

.rasvya-portal-title {
    font-size: 3.5rem;
    margin: 0 0 15px 0;
    line-height: 1.1;
    letter-spacing: -0.5px;
}

.rasvya-abstract-line {
    font-size: 1.25rem;
    color: var(--rasvya-text-secondary);
    line-height: 1.6;
    max-width: 800px;
    margin-bottom: 30px;
}

/* 2. Primary Grid Layout */
.rasvya-portal-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 80px;
    align-items: flex-start;
}
@media (max-width: 992px) {
    .rasvya-portal-grid { grid-template-columns: 1fr; gap: 50px; }
}
@media (max-width: 576px) {
    .rasvya-portal-grid { gap: 30px; }
}

/* 3. Interactive Elements (Links & Buttons) */
.rasvya-portal-container a:not(.rasvya-btn-primary):not(.rasvya-internal-link) {
    color: var(--rasvya-black);
    text-decoration: none;
    transition: color 0.2s ease;
}
.rasvya-portal-container a:not(.rasvya-btn-primary):hover { color: var(--rasvya-gold); }

/* Intelligent Internal Links */
.rasvya-internal-link {
    color: var(--rasvya-black);
    font-weight: 500;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
}
.rasvya-internal-link:hover {
    color: var(--rasvya-gold-dark);
    border-bottom: 1px solid var(--rasvya-gold);
}

.rasvya-btn-primary {
    display: inline-block;
    background: var(--rasvya-black);
    color: var(--rasvya-white) !important;
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.2s ease;
}
.rasvya-btn-primary:hover { background: var(--rasvya-gold); }

.rasvya-btn-secondary {
    display: inline-block;
    background: var(--rasvya-white);
    color: var(--rasvya-gold-dark) !important;
    border: 1px solid var(--rasvya-gold);
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.2s ease;
}
.rasvya-btn-secondary:hover { background: var(--rasvya-surface); color: var(--rasvya-black) !important; border-color: var(--rasvya-black); }

/* 4. Sleek Accordion Redesign & Icons */
.rasvya-toc-target {
    border-top: 1px solid var(--rasvya-border);
    margin: 0;
    padding: 40px 0;
}
.rasvya-toc-target summary {
    font-size: 26px;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.2s ease;
}
.rasvya-toc-target summary::-webkit-details-marker { display: none; }
.rasvya-toc-target summary:hover { color: var(--rasvya-gold); }
.rasvya-toc-target summary::after {
    content: '+';
    font-size: 32px;
    color: var(--rasvya-text-muted);
    font-weight: 300;
    transition: transform 0.3s ease, color 0.2s ease;
}
.rasvya-toc-target[open] summary::after {
    content: '−';
    color: var(--rasvya-gold);
    transform: rotate(180deg);
}

.rasvya-section-header {
    display: flex;
    align-items: center;
    gap: 15px;
}
.rasvya-section-header svg {
    color: var(--rasvya-gold);
    flex-shrink: 0;
}

/* 5. Special Summary Block */
.rasvya-summary-card {
    background: var(--rasvya-white);
    border-left: 3px solid var(--rasvya-gold);
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    border-radius: 0 8px 8px 0;
    margin-bottom: 50px;
    font-size: 1.1em;
}

/* 6. Sticky Sidebar & Sidebar Content */
.rasvya-portal-sidebar {
    position: sticky;
    top: 140px; 
    max-height: calc(100vh - 140px); 
    overflow-y: auto;
    align-self: start; 
    padding-left: 15px;
    /* FIX: Lowered z-index to 1 so the TOC tucks cleanly behind site footers and ribbons */
    z-index: 1; 
}
.rasvya-portal-sidebar::-webkit-scrollbar { width: 4px; }
.rasvya-portal-sidebar::-webkit-scrollbar-thumb { background: var(--rasvya-border); border-radius: 4px; }

.rasvya-sidebar-search {
    border: 1px solid var(--rasvya-border);
    border-radius: 4px;
    padding: 12px 15px;
    display: flex;
    gap: 10px;
    align-items: center;
    cursor: pointer;
    margin-bottom: 30px;
    transition: border-color 0.2s;
    background: var(--rasvya-white);
}
.rasvya-sidebar-search:hover { border-color: var(--rasvya-gold); }

.rasvya-sidebar-widget {
    margin-top: 40px;
    border-top: 1px solid var(--rasvya-border);
    padding-top: 30px;
}
.rasvya-sidebar-widget-title {
    font-family: ui-serif, Georgia, serif;
    font-size: 18px;
    color: var(--rasvya-black);
    margin: 0 0 20px 0;
}

/* Quick Facts Table */
.rasvya-quick-facts table { width: 100%; border-collapse: collapse; font-size: 13px; }
.rasvya-quick-facts th { text-align: left; padding: 10px 0; color: var(--rasvya-text-muted); font-weight: normal; width: 45%; border-bottom: 1px solid var(--rasvya-surface); }
.rasvya-quick-facts td { text-align: right; padding: 10px 0; color: var(--rasvya-black); font-weight: 500; border-bottom: 1px solid var(--rasvya-surface); }
.rasvya-quick-facts tr:last-child th, .rasvya-quick-facts tr:last-child td { border-bottom: none; }

#rasvya-dynamic-toc h3 { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--rasvya-text-muted); margin-bottom: 15px; font-family: sans-serif; }
.rasvya-toc-list { list-style: none; padding: 0; margin: 0; }
.rasvya-toc-link { display: block; padding: 8px 0 8px 12px; color: var(--rasvya-text-secondary); border-left: 2px solid var(--rasvya-border); font-size: 13px; transition: all 0.2s ease; line-height: 1.4; }
.rasvya-toc-link:hover { color: var(--rasvya-black); border-left-color: var(--rasvya-text-muted); }
.rasvya-toc-link.active { color: var(--rasvya-gold-dark); border-left-color: var(--rasvya-gold); font-weight: 600; }

/* 7. Reference Citation Cards */
.rasvya-references-grid {
    display: grid;
    gap: 20px;
    margin-top: 30px;
}
.rasvya-reference-card {
    background: var(--rasvya-white);
    border: 1px solid var(--rasvya-border);
    border-radius: 8px;
    padding: 20px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--rasvya-text-secondary);
    transition: box-shadow 0.2s;
}
.rasvya-reference-card:hover {
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}
.rasvya-ref-title { color: var(--rasvya-black); font-weight: 600; margin-bottom: 8px; font-size: 15px; }

/* 8. Continue Exploring Cards */
.rasvya-explore-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; margin-top: 30px; }
.rasvya-explore-card { border: 1px solid var(--rasvya-border); border-radius: 8px; padding: 20px; display: flex; flex-direction: column; transition: all 0.2s; }
.rasvya-explore-card:hover { border-color: var(--rasvya-gold); box-shadow: 0 4px 15px rgba(200, 155, 44, 0.08); transform: translateY(-2px); }

/* 9. Wikipedia-Style Intelligent Hover Preview */
.rasvya-preview-card {
    position: absolute;
    width: 320px;
    background: var(--rasvya-white);
    border: 1px solid var(--rasvya-border);
    border-radius: 8px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    z-index: 2000; 
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    overflow: hidden;
    pointer-events: none;
}
.rasvya-preview-card.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}
.rasvya-preview-img { width: 100%; height: 140px; object-fit: cover; }
.rasvya-preview-content { padding: 20px; }
.rasvya-preview-cat { font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--rasvya-gold-dark); font-weight: 700; margin-bottom: 5px; display: block; }
.rasvya-preview-content h4 { margin: 0 0 10px 0; font-size: 18px; font-family: ui-serif, Georgia, serif; line-height: 1.2; }
.rasvya-preview-content p { font-size: 13px; color: var(--rasvya-text-secondary); margin: 0 0 15px 0; line-height: 1.5; }

/* 10. Command Palette Overlay */
.rasvya-cp-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(17, 17, 17, 0.6); backdrop-filter: blur(4px); z-index: 3000; display: flex; justify-content: center; align-items: flex-start; padding-top: 10vh; opacity: 0; pointer-events: none; transition: opacity 0.2s ease; }
.rasvya-cp-overlay.active { opacity: 1; pointer-events: auto; }
.rasvya-cp-modal { width: 90%; max-width: 650px; background: var(--rasvya-white); border-radius: 8px; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); overflow: hidden; display: flex; flex-direction: column; }
.rasvya-cp-header { display: flex; align-items: center; padding: 15px 25px; border-bottom: 1px solid var(--rasvya-border); gap: 15px; }
.rasvya-cp-header input { flex: 1; border: none; outline: none; font-size: 18px; color: var(--rasvya-black); background: transparent; padding: 5px 0; }
.rasvya-cp-header input::placeholder { color: var(--rasvya-text-muted); }
#rasvya-cp-close { background: var(--rasvya-surface); border: 1px solid var(--rasvya-border); border-radius: 4px; padding: 4px 8px; font-size: 11px; font-weight: bold; color: var(--rasvya-text-secondary); cursor: pointer; }
.rasvya-cp-results { max-height: 50vh; overflow-y: auto; }
.rasvya-cp-loading, .rasvya-cp-empty { padding: 40px; text-align: center; color: var(--rasvya-text-muted); font-size: 14px; font-style: italic; }
.rasvya-cp-result-item { display: flex; gap: 15px; align-items: flex-start; padding: 15px 25px; border-bottom: 1px solid var(--rasvya-border); text-decoration: none !important; transition: background 0.1s; }
.rasvya-cp-result-item:last-child { border-bottom: none; }
.rasvya-cp-result-item:hover { background: var(--rasvya-surface); }
.rasvya-cp-result-title { color: var(--rasvya-black); font-size: 16px; font-weight: 600; font-family: ui-serif, Georgia, serif; }
.rasvya-cp-result-item:hover .rasvya-cp-result-title { color: var(--rasvya-gold); }
.rasvya-cp-result-category { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--rasvya-text-secondary); background: var(--rasvya-border); padding: 2px 8px; border-radius: 4px; margin-left: auto; font-family: sans-serif;}
.rasvya-cp-result-summary { color: var(--rasvya-text-secondary); font-size: 13px; line-height: 1.5; margin-top: 5px; font-family: sans-serif;}

/* Category Grid */
.rasvya-subject-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 30px; }
.rasvya-subject-card { background: var(--rasvya-white); border: 1px solid var(--rasvya-border); border-radius: 8px; overflow: hidden; transition: all 0.2s ease; }
.rasvya-subject-card:hover { border-color: var(--rasvya-gold); box-shadow: 0 4px 15px rgba(200, 155, 44, 0.08); transform: translateY(-2px); }

/* 11. Dynamic Font Sizer Classes */
.editor-field, .rasvya-resizable-text {
    font-size: var(--editor-font-size);
    transition: font-size 0.2s ease;
}