/* ==========================================================================
   Sanskrit & Indic Research Portal - Core Stylesheet
   Namespace Prefix: ptl- (Prevents conflicts with structural frameworks)
   ========================================================================== */

/* 1. Global Reset & Theme Variables */
:root {
    --ptl-primary-purple: #3b1e54;       /* Deep Imperial Purple for text, headings & masthead */
    --ptl-accent-lavender: #9b72cf;      /* Vibrant lavender for badges, buttons & highlights */
    --ptl-light-bg: #f5f3f7;             /* Soft tinted white background */
    --ptl-pure-white: #ffffff;           /* Clean white for content cards */
    --ptl-text-dark: #2a1b3d;            /* High-contrast body text */
    --ptl-text-muted: #6e5d80;           /* Muted text for dates, secondary authors */
    --ptl-border-light: #e4dee9;         /* Subdued divider borders */
    --ptl-shadow-soft: 0 4px 12px rgba(42, 27, 61, 0.05);
}

.ptl-restricted-environment {
    margin: 0;
    padding: 0;
    background-color: var(--ptl-light-bg);
    color: var(--ptl-text-dark);
    font-family: 'Lora', serif;
    font-size: 16px;
    line-height: 1.6;
    user-select: none; /* Safeguards scholarly layout copy text */
    -webkit-user-select: none;
}

/* 2. Modern Compact Header UI (Replaces Old Tall Banner Styles) */
.nasadiya-compact-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--ptl-primary-purple); /* Restored Deep Imperial Purple */
    padding: 12px 30px;
    border-bottom: 2px solid var(--ptl-accent-lavender);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    width: 100%;
    box-sizing: border-box;
}

.nasadiya-header-brand-group {
    display: flex;
    align-items: center;
}

/* Custom 80px Institutional Branding Logo Rules */
.nasadiya-header-logo img {
    max-height: 80px;
    margin-right: 15px;
    margin-left: 15px;
    width: auto;
    display: block;
}

.nasadiya-header-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.nasadiya-header-title {
    font-family: 'Merriweather', serif;
    font-size: 1.25rem;
    color: var(--ptl-pure-white);
    margin: 0;
    font-weight: 700;
}

.nasadiya-header-subtitle {
    font-family: 'Lora', serif;
    font-size: 0.88rem;
    color: var(--ptl-border-light);
    margin: 2px 0 0 0;
    opacity: 0.9;
}

/* Right-Aligned Navigation Bar */
.nasadiya-header-nav {
    display: flex;
    align-items: center;
}

.nasadiya-header-menu {
    display: flex;
    gap: 25px;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nasadiya-header-menu-link {
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ptl-border-light);
    font-family: sans-serif;
    transition: color 0.2s ease;
}

.nasadiya-header-menu-link:hover {
    color: var(--ptl-pure-white);
}

.nasadiya-header-menu-link.highlight-btn {
    background-color: var(--ptl-accent-lavender);
    color: var(--ptl-pure-white) !important;
    padding: 8px 16px;
    border-radius: 4px;
    box-shadow: 0 2px 6px rgba(155, 114, 207, 0.3);
    transition: background-color 0.2s ease;
}

.nasadiya-header-menu-link.highlight-btn:hover {
    background-color: #aa85db;
}

/* 3. Core Framework Content Layout Blocks */
.ptl-workspace-grid-fluid {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}

.nasadiya-top-block {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    padding: 25px 20px 0 20px;
    box-sizing: border-box;
}

.nasadiya-bottom-grid {
    display: flex;
    gap: 30px;
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 20px 40px 20px;
    box-sizing: border-box;
    align-items: flex-start;
}

/* 2-Column Structural Layout Width Ratios */
.nasadiya-sidebar-col {
    width: 28%;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.nasadiya-results-col {
    width: 72%;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

/* 4. Repository Analytical Dashboard Statistics Counters */
.ptl-analytics-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 10px;
    text-align: center;
}

.ptl-stat-card {
    background-color: var(--ptl-pure-white);
    border: 1px solid var(--ptl-border-light);
    padding: 18px;
    border-radius: 6px;
    box-shadow: var(--ptl-shadow-soft);
}

.ptl-stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--ptl-primary-purple);
    display: block;
    margin-bottom: 4px;
}

.ptl-stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--ptl-text-muted);
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* 5. Search Engine Control Console Interface Elements */
.ptl-search-container-box {
    background: var(--ptl-pure-white);
    border: 1px solid var(--ptl-border-light);
    border-radius: 8px;
    padding: 25px;
    box-shadow: var(--ptl-shadow-soft);
    width: 100%;
    box-sizing: border-box;
}

.ptl-super-omnibox-row {
    display: flex;
    background-color: var(--ptl-pure-white);
    border: 2px solid var(--ptl-primary-purple);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(59, 30, 84, 0.08);
}

.ptl-super-omni-input {
    flex-grow: 1;
    border: none;
    padding: 16px 20px;
    font-size: 1.1rem;
    outline: none;
    font-family: inherit;
    color: var(--ptl-text-dark);
}

.ptl-super-submit-btn {
    background-color: var(--ptl-primary-purple);
    color: var(--ptl-pure-white);
    border: none;
    padding: 0 35px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s;
}

.ptl-super-submit-btn:hover {
    background-color: #522c70;
}

/* Advanced Panel Field Arrangements */
.ptl-advanced-toggle-wrapper {
    margin-top: 15px;
    text-align: left;
}
.ptl-results-display-wrapper {
    width: 100%;
    /* FIXED: Ensures that when the page jumps to this ID, it leaves a 30px gap below the header */
    scroll-margin-top: 30px; 
}

.ptl-advanced-link-text {
    color: var(--ptl-accent-lavender);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    border-bottom: 1px dashed;
}

.ptl-advanced-form-block {
    display: none;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--ptl-border-light);
}

.ptl-advanced-fields-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

.ptl-field-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ptl-field-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ptl-text-muted);
}

.ptl-filter-input, .ptl-filter-select {
    padding: 10px;
    border: 1px solid var(--ptl-border-light);
    border-radius: 4px;
    background: var(--ptl-pure-white);
    font-family: inherit;
    font-size: 0.9rem;
}

.ptl-filter-select {
    height: 40px;
}

.ptl-advanced-actions-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    align-items: center;
}

.ptl-checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-top: 20px;
}

.ptl-checkbox-label {
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    color: #333333;
}

.ptl-advanced-submit-wrapper {
    text-align: right;
}

.ptl-advanced-submit-btn {
    background-color: var(--ptl-accent-lavender);
    color: var(--ptl-pure-white);
    padding: 10px 24px;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.2s;
}

.ptl-advanced-submit-btn:hover {
    background-color: #aa85db;
}

/* 6. Dynamic Results Feed Cards Architecture */
.ptl-modern-paper-card {
    background-color: var(--ptl-pure-white);
    border: 1px solid var(--ptl-border-light);
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: var(--ptl-shadow-soft);
    box-sizing: border-box;
    width: 100%;
}

.ptl-result-node-title {
    font-family: 'Merriweather', serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--ptl-text-dark);
    line-height: 1.4;
    margin: 0 0 6px 0;
}

.ptl-result-node-subtitle {
    font-family: 'Merriweather', serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--ptl-text-muted);
    line-height: 1.4;
    margin: 0 0 12px 0;
    font-style: italic;
}

.ptl-card-metadata-box {
    font-size: 0.85rem;
    line-height: 1.6;
    color: #555555;
    background: #fbfafc;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid #f0eaf5;
    margin-bottom: 15px;
}

.ptl-lang-accent {
    font-weight: 600;
    color: var(--ptl-primary-purple);
}

.ptl-du-accent {
    color: #2e7d32;
    font-weight: 700;
}

.ptl-card-metrics-row {
    display: flex;
    gap: 15px;
    font-size: 0.8rem;
    color: var(--ptl-text-muted);
    margin-bottom: 15px;
    padding-left: 5px;
}

.ptl-scholar-link {
    font-size: 0.85rem;
    color: var(--ptl-primary-purple);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid;
}

.ptl-pdf-link-btn {
    display: inline-block;
    color: var(--ptl-pure-white) !important;
    background-color: #892cdc; /* Rich purple-red accent for critical views */
    text-decoration: none;
    padding: 8px 18px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(137, 44, 220, 0.2);
    transition: background-color 0.2s ease;
}

.ptl-pdf-link-btn:hover {
    background-color: #7020bd;
}

/* 7. Sidebar Stacking Widgets */
.ptl-sidebar-widget-box {
    background-color: var(--ptl-pure-white);
    border: 1px solid var(--ptl-border-light);
    border-radius: 8px;
    padding: 18px;
    box-shadow: var(--ptl-shadow-soft);
}

.ptl-widget-heading {
    font-family: 'Merriweather', serif;
    font-size: 0.95rem;
    color: var(--ptl-primary-purple);
    border-bottom: 2px solid var(--ptl-border-light);
    padding-bottom: 6px;
    margin: 0 0 12px 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ptl-widget-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ptl-widget-link {
    text-decoration: none;
    color: var(--ptl-text-dark);
    font-size: 0.88rem;
    display: block;
    line-height: 1.4;
}

.ptl-widget-link:hover {
    color: var(--ptl-accent-lavender);
}

.ptl-widget-meta-tag {
    font-size: 0.72rem;
    color: var(--ptl-text-muted);
    font-weight: bold;
}

.ptl-status-msg-empty {
    text-align: center;
    padding: 40px;
    color: var(--ptl-text-muted);
    border: 2px dashed var(--ptl-border-light);
    background: var(--ptl-pure-white);
    border-radius: 6px;
    margin: 0;
}

/* 8. Submission Page Specific Grid Arrangements */
.nasadiya-submit-grid {
    display: flex;
    gap: 30px;
    max-width: 1300px;
    margin: 30px auto;
    padding: 0 20px;
    box-sizing: border-box;
    align-items: flex-start;
}
.nasadiya-submit-sidebar {
    width: 25%;
    background: var(--ptl-pure-white);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--ptl-border-light);
    box-shadow: var(--ptl-shadow-soft);
    box-sizing: border-box;
}
.nasadiya-submit-main {
    width: 75%;
    box-sizing: border-box;
}
.nasadiya-smart-engine-panel {
    background: var(--ptl-primary-purple);
    color: var(--ptl-pure-white);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    box-shadow: var(--ptl-shadow-soft);
}
.nasadiya-core-form {
    background: var(--ptl-pure-white);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--ptl-border-light);
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-shadow: var(--ptl-shadow-soft);
}

/* 9. Central Index Header Branding Typography */
.ptl-brand-title {
    font-family: 'Merriweather', serif;
    font-size: 2.8rem;
    color: var(--ptl-primary-purple);
    margin: 0 0 6px 0;
    font-weight: 800;
    text-align: center;
}

.ptl-brand-subtitle {
    font-family: 'Lora', serif;
    font-size: 1.2rem;
    color: var(--ptl-text-muted);
    text-align: center;
    margin: 0 0 8px 0;
    font-style: italic;
}

.ptl-brand-credits {
    font-family: sans-serif;
    font-size: 0.9rem;
    text-align: center;
    color: #7f8c8d;
    margin: 0 0 30px 0;
    letter-spacing: 0.5px;
}

/* 10. Interactive Sidebar Navigation Overrides
   FIXED: Force-purged default underlines and highlights from anchor nodes 
*/
.ptl-sidebar-list-item {
    margin: 0;
    border-radius: 4px;
    overflow: hidden;
    list-style: none;
}

.ptl-sidebar-domain-link {
    display: block;
    padding: 1px 1px;
    text-decoration: none !important; /* Strips browser underline rules cleanly */
    color: var(--ptl-text-dark);
    font-size: 0.88rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.ptl-sidebar-domain-link:hover {
    background-color: var(--ptl-light-bg);
    color: var(--ptl-primary-purple);
    text-decoration: none !important;
    padding-left: 14px;
}

.ptl-domain-active {
    background-color: var(--ptl-border-light) !important;
    font-weight: 700;
    color: var(--ptl-primary-purple) !important;
    text-decoration: none !important;
}

/* 11. Interactive Document Viewer Layout (Split Screen) */
.ptl-split-viewer-workspace {
    display: flex;
    width: 100%;
    height: calc(100vh - 120px);
    background-color: var(--ptl-pure-white);
    border-top: 1px solid var(--ptl-border-light);
}

.ptl-viewer-left-pane {
    width: 70%;
    height: 100%;
    border-right: 2px solid var(--ptl-border-light);
    background-color: #525659;
}

.ptl-viewer-right-pane {
    width: 30%;
    height: 100%;
    padding: 25px;
    overflow-y: auto;
    box-sizing: border-box;
    background-color: #fdfcfb;
}

/* 12. Core Purple Footer Architecture */
.ptl-master-footer {
    background-color: var(--ptl-primary-purple) !important;
    color: var(--ptl-pure-white) !important;
    padding: 25px 0;
    margin-top: 40px;
    border-top: 3px solid var(--ptl-accent-lavender);
    text-align: center;
    width: 100%;
}

.ptl-footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    font-family: sans-serif;
    font-size: 0.85rem;
    color: var(--ptl-border-light) !important;
    line-height: 1.6;
}


/* ==========================================================================
   INTERACTIVE MEDIA QUERY ARCHITECTURE FOR SMARTPHONES AND TABLETS
   ========================================================================== */

/* TABLET BINDINGS (Viewport scales precisely from 841px up to 1100px)
   FIXED: Maintains side-by-side desktop layout proportionality across tabs,
   gently auto-adjusting menu sizing to remain on a single line.
*/
@media (min-width: 841px) and (max-width: 1100px) {
    .nasadiya-top-block,
    .nasadiya-bottom-grid,
    .nasadiya-submit-grid {
        max-width: 100%;
        padding: 15px 20px;
    }

    .nasadiya-compact-header {
        padding: 10px 20px;
    }

    .nasadiya-header-title {
        font-size: 1.05rem; 
    }

    .nasadiya-header-menu {
        gap: 15px;
    }

    .nasadiya-header-menu-link {
        font-size: 0.88rem;
    }

    .nasadiya-header-menu-link.highlight-btn {
        padding: 6px 12px;
    }

    .ptl-analytics-strip {
        gap: 15px;
    }

    .ptl-stat-number {
        font-size: 1.5rem;
    }
}

/* SMARTPHONE BINDINGS (Viewport boundaries below 840px)
   FIXED: Made visually STRONGER with crisp high-contrast cards, bold headers, 
   and dynamic structural order configurations shifting results to the top.
*/
@media (max-width: 840px) {
    /* FIXED: Pushes search outputs up above sidebar widgets */
    .nasadiya-bottom-grid {
        display: flex;
        flex-direction: column-reverse !important; 
        gap: 25px;
        padding: 10px 12px 30px 12px;
    }

    .nasadiya-submit-grid {
        display: flex;
        flex-direction: column;
        gap: 25px;
        padding: 10px 12px 30px 12px;
    }

    .nasadiya-sidebar-col,
    .nasadiya-submit-sidebar,
    .nasadiya-results-col,
    .nasadiya-submit-main {
        width: 100% !important;
    }

    /* FIXED: Stacks branding headers cleanly and centers menu links underneath */
    .nasadiya-compact-header {
        flex-direction: column !important;
        gap: 12px;
        padding: 15px 15px;
        text-align: center;
        align-items: center;
        justify-content: center;
    }

    .nasadiya-header-brand-group {
        flex-direction: column !important;
        gap: 6px;
        text-align: center;
    }

    .nasadiya-header-logo img {
        margin: 0 auto;
        max-height: 60px;
    }

    .nasadiya-header-nav {
        width: 100%;
        display: flex;
        justify-content: center;
    }

    .nasadiya-header-menu {
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
    }

    .nasadiya-header-menu-link {
        font-size: 0.85rem;
        font-weight: 700; /* STRONGER menu contrast */
    }

    /* Bold Mobile Header Sizing */
    .ptl-brand-title {
        font-size: 1.8rem;
        font-weight: 800;
    }

    .ptl-brand-subtitle {
        font-size: 0.95rem;
        line-height: 1.4;
    }

    .ptl-brand-credits {
        font-size: 0.8rem;
        margin-bottom: 15px;
    }

    /* High-Contrast Mobile Counters */
    .ptl-analytics-strip {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .ptl-stat-card {
        padding: 14px;
       
    }

    /* Strong Full-Width Search Blocks */
    .ptl-super-omnibox-row {
        flex-direction: column;
        border: none;
        box-shadow: none;
        gap: 8px;
        background: transparent;
    }

    .ptl-super-omni-input {
        width: 100%;
        border: 2px solid var(--ptl-primary-purple);
        border-radius: 6px;
        padding: 12px;
        box-sizing: border-box;
        font-size: 1rem;
    }

    .ptl-super-submit-btn {
        width: 100%;
        padding: 12px 0;
        border-radius: 6px;
        font-size: 1rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    /* Smart Ingestion Stack Normalization */
    .nasadiya-smart-engine-panel div[style*="display: flex"] {
        flex-direction: column;
        gap: 8px !important;
    }

    .nasadiya-smart-engine-panel button {
        width: 100%;
        padding: 12px 0 !important;
    }

    /* Form Inputs Auto-Flattening rules */
    .ptl-advanced-fields-row,
    .ptl-advanced-search-grid,
    .nasadiya-core-form div[style*="display: grid"],
    form div[style*="display: grid"] {
        grid-template-columns: 1fr !important;
        gap: 10px !important;
    }

    .ptl-advanced-actions-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .ptl-checkbox-group {
        padding-top: 0;
    }

    /* STRONGER Card Components: Raised border weights for mobile glare insulation */
    .ptl-modern-paper-card {
        padding: 16px;
        border: 1.5px solid var(--ptl-border-light); 
        box-shadow: 0 4px 10px rgba(0,0,0,0.04);
    }

    .ptl-result-node-title {
        font-size: 1.15rem;
        color: var(--ptl-primary-purple);
    }
    
    .ptl-result-node-subtitle {
        font-size: 1.1rem;
    }

    .ptl-card-metadata-box {
        padding: 12px;
        font-size: 0.8rem;
        border: 1px solid var(--ptl-border-light);
    }

    .ptl-card-metrics-row {
        flex-direction: column;
        gap: 5px;
        padding-left: 0;
        font-weight: 600; /* Highly scannable numbers */
    }

    .ptl-action-ribbon {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        width: 100%;
    }

    .ptl-pdf-link-btn {
        text-align: center;
        width: 100%;
        padding: 10px 0;
        font-size: 0.9rem;
        box-sizing: border-box;
    }

    .ptl-scholar-link {
        text-align: center;
        display: block;
        padding: 6px 0;
    }

    .ptl-master-footer {
        padding: 20px 12px;
    }

    .ptl-footer-inner {
        padding: 0;
        font-size: 0.78rem;
    }
}

/* ==========================================================================
   Interactive Document Viewer Layout - Mobile & Tablet Adaptations
   ========================================================================== */

@media (max-width: 840px) {
    /* 1. Change row split framework into a single stacked column list */
    .ptl-split-viewer-workspace {
        display: flex;
        flex-direction: column !important;
        height: auto !important; /* Allow the page to scroll naturally downstream */
        min-height: 100vh;
    }

    /* 2. Give the PDF frame full width and set a comfortable touch height */
    .ptl-viewer-left-pane {
        width: 100% !important;
        height: 55vh !important; /* Takes up slightly more than half the viewport height */
        border-right: none !important;
        border-bottom: 2px solid var(--ptl-border-light);
    }

    /* 3. Give the metadata and citation blocks full width below the PDF */
    .ptl-viewer-right-pane {
        width: 100% !important;
        height: auto !important;
        padding: 20px 15px !important;
        background-color: var(--ptl-pure-white);
        overflow-y: visible !important; /* Disable double scrolling boxes on mobile */
    }

    /* 4. Optimize citation copy button arrays for easy thumb tapping */
    .ptl-viewer-right-pane div[style*="display: flex"] {
        flex-direction: column !important;
        gap: 10px !important;
    }

    .ptl-cite-btn {
        width: 100% !important;
        padding: 12px 10px !important; /* Larger hit target on touchscreens */
        font-size: 0.85rem !important;
    }
}