/* ==============================================================================
   THE RESONANCE THEORY (TRT) - PORTAL V2 MASTER STYLESHEET
   Unified Theme Engine, Responsive Grid & KaTeX Math Typography
   ============================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* --- 1. THEME TOKENS --- */
:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Outfit', var(--font-sans);
    --font-mono: 'JetBrains Mono', monospace;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Theme 1: Obsidian Skunkworks (Default Dark) */
html[data-theme="obsidian"], :root {
    --bg-primary: #070A0F;
    --bg-secondary: #0C111C;
    --bg-card: #111726;
    --bg-card-hover: #161F33;
    --bg-glass: rgba(12, 17, 28, 0.85);
    
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    
    --border-subtle: rgba(148, 163, 184, 0.12);
    --border-highlight: rgba(56, 189, 248, 0.4);
    --border-active: #38BDF8;
    
    --accent-cyan: #38BDF8;
    --accent-amber: #F59E0B;
    --accent-emerald: #10B981;
    --accent-violet: #A855F7;
    
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(56, 189, 248, 0.2);
}

/* Theme 2: Amber CRT Terminal */
html[data-theme="amber"] {
    --bg-primary: #0A0700;
    --bg-secondary: #140E02;
    --bg-card: #1C1303;
    --bg-card-hover: #261B05;
    --bg-glass: rgba(20, 14, 2, 0.9);
    
    --text-primary: #FFB000;
    --text-secondary: #D49200;
    --text-muted: #8F6200;
    
    --border-subtle: rgba(255, 176, 0, 0.2);
    --border-highlight: rgba(255, 176, 0, 0.5);
    --border-active: #FFB000;
    
    --accent-cyan: #FFB000;
    --accent-amber: #FFB000;
    --accent-emerald: #FFC033;
    --accent-violet: #E69D00;
    
    --shadow-glass: 0 8px 32px rgba(255, 176, 0, 0.08);
    --shadow-glow: 0 0 20px rgba(255, 176, 0, 0.25);
}

/* Theme 3: Daylight Academic Paper */
html[data-theme="daylight"] {
    --bg-primary: #F8FAFC;
    --bg-secondary: #F1F5F9;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F8FAFC;
    --bg-glass: rgba(255, 255, 255, 0.9);
    
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #64748B;
    
    --border-subtle: #E2E8F0;
    --border-highlight: #0284C7;
    --border-active: #0284C7;
    
    --accent-cyan: #0284C7;
    --accent-amber: #D97706;
    --accent-emerald: #059669;
    --accent-violet: #7C3AED;
    
    --shadow-glass: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 0 15px rgba(2, 132, 199, 0.15);
}

/* --- 2. BASE RESET & TYPOGRAPHY --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1.25;
    font-weight: 700;
}

code, pre, .font-mono {
    font-family: var(--font-mono);
}

a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--text-primary);
}

/* --- 3. LAYOUT CONTAINERS --- */
.container-wide, .portal-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    box-sizing: border-box;
}

@media (min-width: 1024px) {
    .container-wide, .portal-container {
        padding: 0 3.25rem;
    }
}

.container-narrow {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
    box-sizing: border-box;
}

/* --- 4. UNIFIED MASTER HEADER --- */
.portal-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.75rem 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

/* Brand */
.brand-anchor {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
    flex-shrink: 0;
}

.brand-glyph {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-amber));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    color: #070A0F;
    box-shadow: var(--shadow-glow);
}

.brand-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    display: block;
}

.brand-subtitle {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-cyan);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: block;
}

/* Desktop Navigation */
.nav-links-desktop {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.nav-item-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
}

.nav-item-link:hover {
    color: var(--text-primary);
    background: var(--bg-card);
    border-color: var(--border-subtle);
}

.nav-item-link.active {
    color: var(--accent-cyan);
    background: var(--bg-card);
    border-color: var(--border-highlight);
    font-weight: 600;
}

.chamber-badge {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    background: rgba(56, 189, 248, 0.15);
    color: var(--accent-cyan);
    font-weight: 600;
}

/* 3-Way Theme Switcher Widget */
.theme-switch-control {
    display: inline-flex;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    padding: 3px;
    gap: 2px;
}

.theme-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.65rem;
    border-radius: var(--radius-full);
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    cursor: pointer;
    transition: var(--transition);
}

.theme-btn svg {
    width: 14px;
    height: 14px;
}

.theme-btn:hover {
    color: var(--text-primary);
}

.theme-btn.active {
    background: var(--bg-card);
    color: var(--accent-cyan);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
    font-weight: 600;
}

/* Mobile Toggle & Off-Canvas Drawer */
.mobile-nav-toggle {
    display: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    cursor: pointer;
}

.mobile-drawer-scrim {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1999;
}

.mobile-drawer {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-subtle);
    padding: 1.5rem;
    z-index: 2000;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

.mobile-drawer.open {
    display: flex;
}

.mobile-drawer-scrim.open {
    display: block;
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
    .nav-links-desktop {
        display: none;
    }
    .mobile-nav-toggle {
        display: inline-flex;
    }
}

/* --- 5. BREADCRUMBS TRAIL --- */
.breadcrumb-trail {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 1rem 0;
}

.breadcrumb-trail a {
    color: var(--text-secondary);
}

.breadcrumb-trail a:hover {
    color: var(--accent-cyan);
}

.breadcrumb-separator {
    color: var(--text-muted);
    opacity: 0.6;
}

/* --- 6. HERO SECTION --- */
.hero-section {
    padding: 4rem 0 3rem;
    border-bottom: 1px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
}

.hero-pill-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.3);
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: clamp(2.2rem, 4.5vw, 3.6rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    line-height: 1.15;
}

.hero-gradient-text {
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 820px;
    line-height: 1.7;
    margin-bottom: 2rem;
}

/* --- 6.1 INTERIOR PAGE HERO & HEADERS --- */
.page-hero {
    padding: 3.5rem 0 2.5rem;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 3rem;
}

.page-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.28);
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.page-hero-badge.badge-amber {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--accent-amber);
}

.page-hero-badge.badge-violet {
    background: rgba(168, 85, 247, 0.12);
    border-color: rgba(168, 85, 247, 0.35);
    color: var(--accent-violet);
}

.page-hero-badge.badge-emerald {
    background: rgba(16, 185, 129, 0.12);
    border-color: rgba(16, 185, 129, 0.35);
    color: var(--accent-emerald);
}

.page-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.15;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 840px;
    line-height: 1.75;
    margin-bottom: 2rem;
}

.meta-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2rem;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-muted);
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.meta-item span {
    color: var(--text-muted);
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.meta-item strong {
    color: var(--accent-cyan);
    font-weight: 600;
}

/* --- 7. UNIVERSAL RESPONSIVE CARD GRIDS --- */
.card-grid {
    display: grid;
    gap: 2rem;
    margin: 2.5rem 0;
}

.card-grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.25rem;
    margin: 2.5rem 0;
}

.card-grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2.5rem;
    margin: 2.5rem 0;
}

.card-grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.core-pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 2.25rem;
    margin: 3.5rem 0;
}

.pillar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
}

.pillar-card:hover {
    border-color: var(--border-highlight);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glass);
}

.tri-chamber-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.25rem;
    margin: 3.5rem 0;
}

.chamber-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
}

.chamber-card:hover {
    border-color: var(--border-highlight);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glass);
}

.chamber-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.chamber-index-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
}

.chamber-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.65rem;
    color: var(--text-primary);
}

.chamber-desc {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.chamber-action-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-cyan);
}

/* --- 8. CONSTANTS MATRIX & CARDS --- */
.constants-section {
    padding: 3rem 0;
    border-bottom: 1px solid var(--border-subtle);
}

.section-header {
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.constants-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.constant-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

.constant-card:hover {
    border-color: var(--border-highlight);
    background: var(--bg-card-hover);
}

.constant-symbol {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 0.25rem;
}

.constant-value {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.constant-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* --- 9. CONTENT CARDS & PAPERS LIST --- */
.paper-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.paper-card:hover {
    border-color: var(--border-highlight);
}

.paper-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.paper-title {
    font-size: 1.15rem;
    font-weight: 700;
}

.paper-badge {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-emerald);
    flex-shrink: 0;
}

.paper-abstract {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.paper-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* --- 10. MATH & KATEX WRAPPERS --- */
.math-block {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    text-align: center;
}

/* --- 11. FOOTER --- */
.portal-footer {
    margin-top: auto;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    padding: 2.5rem 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.footer-nav {
    display: flex;
    gap: 1.25rem;
}

.footer-nav a {
    color: var(--text-secondary);
}

.footer-nav a:hover {
    color: var(--accent-cyan);
}

/* --- 12. ACADEMIC TABLES & ALIGNMENT --- */
.table-wrapper {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 1.5rem 0;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    background: var(--bg-card);
}

.academic-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    text-align: left;
}

.academic-table th {
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.95rem 1.25rem;
    border-bottom: 2px solid var(--border-subtle);
    text-align: left !important;
    white-space: nowrap;
}

.academic-table td {
    padding: 0.95rem 1.25rem;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    vertical-align: middle;
    text-align: left !important;
    line-height: 1.6;
}

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

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

/* Brand Glyph SVG */
.brand-glyph svg {
    width: 22px;
    height: 22px;
    display: block;
    color: #070A0F;
}

/* Periodic Table Dimmed Elements */
.element-cell.dimmed-cell {
    opacity: 0.22 !important;
    filter: grayscale(80%) !important;
    border-color: var(--border-subtle) !important;
    box-shadow: none !important;
    transform: none !important;
}

/* Full Clickable Cards */
.visualizer-preview-card, a.chamber-card {
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}