/* ==========================================================================
   HudIsThinking - Monochromatic Gothic / Archive Aesthetic
   Font: Special Elite
   Color Scheme: Pure Black (#000000), Deep Tones, Stark White (#ffffff)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Special+Elite&display=swap');

:root {
  --bg-black: #000000;
  --bg-surface: #0a0a0a;
  --bg-surface-elevated: #121212;
  --border-subtle: #1e1e1e;
  --border-strong: #333333;
  --border-focus: #ffffff;
  --text-primary: #f5f5f5;
  --text-secondary: #a3a3a3;
  --text-muted: #666666;
  --font-archive: 'Special Elite', monospace, Courier, serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  background-color: var(--bg-black);
  color: var(--text-primary);
  font-family: var(--font-archive);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: opacity 0.15s ease, border-color 0.15s ease;
}

a:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

/* ---------------- Background Firefly Wisps ---------------- */
#wisp-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
}

/* ---------------- Layout & Container ---------------- */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.site-header {
  border-bottom: 1px solid var(--border-subtle);
  background-color: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 1.1rem 0;
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: nowrap;
  gap: 2.5rem;
  width: 100%;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo {
  height: 38px;
  width: auto;
  object-fit: contain;
  display: block;
  filter: contrast(1.2) brightness(1.1);
}

.brand-text {
  font-size: 1.3rem;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: #ffffff;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: nowrap;
  margin-left: 0;
  width: 100%;
}

.nav-link {
  font-size: 0.92rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-link:hover,
.nav-link.active {
  color: #ffffff;
  border-bottom: 1px solid #ffffff;
  text-decoration: none;
}

main.site-content {
  flex: 1;
  padding: 3.5rem 0;
  position: relative;
  z-index: 1;
}

/* ---------------- Monochromatic Cards & Sections ---------------- */
.section-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: normal;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
}

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

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.monochrome-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 1.5rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  position: relative;
}

.monochrome-card:hover {
  border-color: var(--border-strong);
  background-color: var(--bg-surface-elevated);
}

.card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.tag-badge {
  display: inline-block;
  border: 1px solid var(--border-strong);
  padding: 0.1rem 0.45rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.card-title {
  font-size: 1.35rem;
  margin-bottom: 0.6rem;
  line-height: 1.3;
}

.card-title a {
  color: #ffffff;
}

.card-title a:hover {
  text-decoration: underline;
}

.card-body {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* ---------------- Filter Pills ---------------- */
.filter-bar {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.35rem 0.85rem;
  font-family: inherit;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover,
.filter-btn.active {
  border-color: #ffffff;
  color: #ffffff;
  background-color: var(--bg-surface-elevated);
  text-decoration: none;
}

/* ---------------- Reader / Detail Views ---------------- */
.reader-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1.5rem;
}

.reader-title {
  font-size: 2.25rem;
  line-height: 1.25;
  color: #ffffff;
  margin-bottom: 1rem;
}

.thesis-callout {
  border-left: 2px solid #ffffff;
  padding: 1rem 1.25rem;
  background-color: var(--bg-surface);
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--text-primary);
}

.thesis-callout strong {
  display: block;
  font-style: normal;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.markdown-prose {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.markdown-prose p {
  margin-bottom: 1.5rem;
}

.markdown-prose h2,
.markdown-prose h3,
.markdown-prose h4 {
  color: #ffffff;
  margin: 2.2rem 0 1rem;
  font-weight: normal;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.markdown-prose blockquote {
  border-left: 1px solid var(--border-strong);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
}

.markdown-prose code {
  background-color: var(--bg-surface-elevated);
  padding: 0.15rem 0.35rem;
  font-size: 0.9em;
  border: 1px solid var(--border-subtle);
}

.markdown-prose pre {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.markdown-prose ul, .markdown-prose ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

/* ---------------- High-Contrast Gothic Tables ---------------- */
.markdown-prose table,
table {
  width: 100%;
  margin: 2.2rem 0;
  border-collapse: collapse;
  background-color: #050505; /* Deep opaque dark black backdrop */
  border: 2px solid #ffffff;  /* High-contrast solid white box outline */
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.9), 0 0 10px rgba(255, 255, 255, 0.15);
  position: relative;
  z-index: 2;
  overflow: hidden;
}

.markdown-prose th,
.markdown-prose td,
table th,
table td {
  border: 1px solid #333333;
  padding: 1rem 1.25rem;
  text-align: left;
  vertical-align: top;
  color: #f0f0f0;
  background-color: #080808;
  line-height: 1.6;
}

.markdown-prose th,
table th,
table tr:first-child td {
  background-color: #121212;
  border-bottom: 2px solid #ffffff;
  color: #ffffff;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.92rem;
}

.markdown-prose tr:hover td,
table tr:hover td {
  background-color: #0f0f0f;
}

.markdown-prose table p,
table p {
  margin-bottom: 0 !important;
  line-height: 1.6;
}

.markdown-prose table b,
.markdown-prose table strong,
table b,
table strong {
  color: #ffffff;
}

/* ---------------- Project Downloads Box ---------------- */
.download-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  padding: 1.75rem;
  margin: 2rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.download-info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.download-title {
  font-size: 1.2rem;
  color: #ffffff;
}

.download-specs {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: #ffffff;
  color: #000000;
  padding: 0.75rem 1.75rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid #ffffff;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn-download:hover {
  background-color: #000000;
  color: #ffffff;
  text-decoration: none;
}

.btn-secondary {
  display: inline-block;
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  padding: 0.55rem 1.25rem;
  font-family: inherit;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.15s ease;
}

.btn-secondary:hover {
  border-color: #ffffff;
  text-decoration: none;
}

/* ---------------- Footer ---------------- */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 1.75rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  position: relative;
  z-index: 1;
  width: 100%;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: 2rem;
  width: 100%;
}

.footer-copy {
  white-space: nowrap;
  flex-shrink: 0;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1.5rem;
  flex-wrap: nowrap;
  white-space: nowrap;
  margin-left: auto;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: #ffffff;
  text-decoration: none;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
  .site-header {
    padding: 1rem 0;
  }
  .header-inner {
    gap: 1.5rem;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .header-inner::-webkit-scrollbar {
    display: none;
  }
  .site-nav {
    gap: 1.25rem;
  }
  .footer-inner {
    gap: 1.25rem;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .footer-inner::-webkit-scrollbar {
    display: none;
  }
  .footer-links {
    gap: 1.1rem;
  }
  .reader-title {
    font-size: 1.75rem;
  }
  .download-box {
    flex-direction: column;
    align-items: flex-start;
  }
  .btn-download {
    width: 100%;
    justify-content: center;
  }
}

/* ==========================================================================
   Search Bars & Tag Taxonomy UI
   ========================================================================== */
.search-container {
  margin-bottom: 1.5rem;
}

.search-form {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: center;
}

.search-input {
  flex: 1;
  min-width: 240px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  color: #ffffff;
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.55rem 0.95rem;
  letter-spacing: 0.04em;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: #ffffff;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.15);
}

.search-btn {
  background-color: transparent;
  color: #ffffff;
  border: 1px solid var(--border-strong);
  font-family: inherit;
  font-size: 0.85rem;
  padding: 0.55rem 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 0.15s ease;
}

.search-btn:hover {
  background-color: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

.search-clear {
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.55rem 0.5rem;
}

.search-clear:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* Tag filter bar */
.tags-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  margin-bottom: 2rem;
  padding: 0.75rem 1rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
}

.tags-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-right: 0.4rem;
}

.tag-filter-btn {
  font-size: 0.8rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  padding: 0.15rem 0.45rem;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.tag-filter-btn:hover,
.tag-filter-btn.active {
  color: #ffffff;
  border-color: #ffffff;
  background-color: var(--bg-surface-elevated);
  text-decoration: none;
}

/* Card tags row */
.card-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.card-tag-pill {
  font-size: 0.75rem;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  padding: 0.1rem 0.4rem;
  letter-spacing: 0.03em;
  transition: all 0.15s ease;
}

.card-tag-pill:hover {
  color: #ffffff;
  border-color: var(--border-strong);
  text-decoration: none;
}

/* ==========================================================================
   Atmospheric & Magical Interactions
   ========================================================================== */

/* 1. Event Horizon Card Accretion Disk Glow */
.event-horizon-card {
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.event-horizon-card:hover {
  border-color: #555555;
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.07), inset 0 0 20px rgba(255, 255, 255, 0.02);
}

/* 2. Reading Horizon Progress Line */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: #ffffff;
  z-index: 9999;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
  pointer-events: none;
  transition: width 0.08s ease-out;
}

/* 3. Terminal Typewriter Entrance */
.typewriter-entrance {
  animation: typewriter-fade 0.7s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

@keyframes typewriter-fade {
  from {
    opacity: 0;
    transform: translateY(6px);
    letter-spacing: 0.08em;
  }
  to {
    opacity: 1;
    transform: translateY(0);
    letter-spacing: normal;
  }
}

/* ==========================================================================
   Gothic Accordions, Academic Citations & Media Styling
   ========================================================================== */

/* Featured Media Artwork Frame */
.featured-media-frame {
  margin: 1.5rem 0 2rem;
  border: 1px solid var(--border-subtle);
  background-color: #000000;
  padding: 4px;
  display: block;
}

.featured-media-img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  display: block;
  filter: contrast(110%);
}

/* Top Download Bar */
.top-download-bar {
  margin: 1.5rem 0 2.5rem;
}

/* Philosophical Apparatus: Gothic Accordions (and all prose details) */
.philosophical-apparatus {
  margin: 3.5rem 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.gothic-accordion,
.markdown-prose details {
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  transition: border-color 0.2s ease, background-color 0.2s ease;
  margin: 1.5rem 0;
}

.gothic-accordion:hover,
.markdown-prose details:hover {
  border-color: #666666;
}

.gothic-accordion[open],
.markdown-prose details[open] {
  border-color: #ffffff;
  background-color: var(--bg-surface-elevated);
}

.gothic-accordion-summary,
.markdown-prose details > summary {
  padding: 1rem 1.25rem;
  font-family: inherit;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  user-select: none;
  list-style: none; /* Hide default native disclosure triangle */
}

.gothic-accordion-summary::-webkit-details-marker,
.markdown-prose details > summary::-webkit-details-marker {
  display: none;
}

/* Hide raw Elementor SVGs inside summary */
.markdown-prose details > summary svg {
  display: none !important;
}

/* Prefix indicator for markdown-prose details summaries that don't have .accordion-marker */
.markdown-prose details > summary:not(:has(.accordion-marker))::before {
  content: "[+] ";
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: monospace;
  transition: color 0.2s ease;
  margin-right: 0.25rem;
}

.markdown-prose details[open] > summary:not(:has(.accordion-marker))::before {
  content: "[-] ";
  color: #ffffff;
}

.accordion-marker {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: monospace;
  transition: color 0.2s ease;
}

.gothic-accordion[open] .accordion-marker {
  color: #ffffff;
}

.gothic-accordion[open] .accordion-marker::before {
  content: "[-] ";
}

.gothic-accordion:not([open]) .accordion-marker::before {
  content: "[+] ";
}

/* Hide raw marker text if pseudo-element handles it */
.accordion-marker {
  font-size: 0;
}
.accordion-marker::before {
  font-size: 0.85rem;
}

.accordion-title {
  font-weight: normal;
}

.gothic-accordion-content,
.markdown-prose details > :not(summary) {
  padding: 1rem 1.5rem 1.25rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.markdown-prose details > summary + * {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.25rem;
}

/* Broken image suppression */
img:not([src]),
img[src=""],
img[src="#"] {
  display: none !important;
}

/* Academic Citation Box */
.citation-box {
  margin: 2.5rem 0 1.5rem;
  border: 1px solid var(--border-strong);
  background-color: #000000;
  padding: 1.25rem 1.5rem;
}

.citation-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.citation-box-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #ffffff;
}

.citation-box-meta {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.citation-entry {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  gap: 1rem;
  align-items: center;
  margin-bottom: 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px dashed var(--border-subtle);
}

.citation-entry:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.citation-format-tag {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-family: monospace;
}

.citation-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.45;
  word-break: break-word;
}

.btn-copy-cite {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  font-family: monospace;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.btn-copy-cite:hover {
  color: #ffffff;
  border-color: #ffffff;
  background-color: var(--bg-surface-elevated);
}

@media (max-width: 650px) {
  .citation-entry {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
}

/* ==========================================================================
   Peaceful Gargantua Gravitational Lensing Transition System
   ========================================================================== */

/* Horizon Container - Centered, wide equatorial aperture */
.gargantua-container {
  position: fixed;
  top: 50%;
  left: 50%;
  width: min(94vw, 840px);
  height: 480px;
  transform: translate(-50%, -50%) scale(0.96);
  pointer-events: none;
  z-index: 9998;
  opacity: 0;
  transition: opacity 0.5s cubic-bezier(0.25, 1, 0.5, 1),
              transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 1. Upper Gravitational Lensing Halo (Light bent over the singularity) */
.gargantua-lensing-top {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 440px;
  height: 380px;
  transform: translate(-50%, -64%);
  border-radius: 50%;
  border-top: 3px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 -8px 30px 10px rgba(255, 255, 255, 0.35),
              0 -2px 10px 4px rgba(255, 255, 255, 0.7);
  mask-image: linear-gradient(to bottom, black 30%, transparent 80%);
  -webkit-mask-image: linear-gradient(to bottom, black 30%, transparent 80%);
  filter: blur(1.5px);
  pointer-events: none;
  z-index: 2;
}

/* 2. Lower Gravitational Lensing Arc (Light bent beneath the singularity) */
.gargantua-lensing-bottom {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 380px;
  height: 280px;
  transform: translate(-50%, -36%);
  border-radius: 50%;
  border-bottom: 2px solid rgba(255, 255, 255, 0.65);
  box-shadow: 0 8px 25px 8px rgba(255, 255, 255, 0.2);
  mask-image: linear-gradient(to top, black 25%, transparent 75%);
  -webkit-mask-image: linear-gradient(to top, black 25%, transparent 75%);
  filter: blur(2px);
  pointer-events: none;
  z-index: 1;
}

/* 3. Horizontal Equatorial Accretion Disk - Vast interstellar light plane */
.gargantua-equator {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 28px;
  transform: translate(-50%, -50%);
  background: radial-gradient(
    ellipse at center,
    rgba(255, 255, 255, 0.95) 0%,
    rgba(255, 255, 255, 0.65) 24%,
    rgba(255, 255, 255, 0.25) 55%,
    rgba(255, 255, 255, 0) 80%
  );
  filter: blur(4px);
  box-shadow: 0 0 45px 12px rgba(255, 255, 255, 0.3);
  pointer-events: none;
  z-index: 4;
}

/* 4. Pitch-Black Event Horizon (The Shadow) */
.gargantua-shadow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 250px;
  height: 250px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: #000000;
  box-shadow: inset 0 0 35px 12px rgba(0, 0, 0, 1),
              0 0 1px 1px rgba(255, 255, 255, 0.5);
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gargantua-inner-horizon {
  position: absolute;
  width: 242px;
  height: 242px;
  border-radius: 50%;
  background: #000000;
  box-shadow: 0 0 15px 4px rgba(0, 0, 0, 1);
  z-index: 1;
}

/* H.I.T. Vintage Manuscript Text centered directly over the singularity */
.gargantua-hit-logo {
  position: relative;
  z-index: 2;
  width: 170px;
  height: auto;
  pointer-events: none;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.75))
          drop-shadow(0 0 16px rgba(255, 255, 255, 0.45));
  opacity: 0.95;
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.4s ease;
}

/* Atmospheric Ambient Horizon Glow on Screen */
html.is-animating::after,
html.is-leaving::after {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.92) 80%);
  pointer-events: none;
  z-index: 9990;
  opacity: 0;
  animation: gargantua-vignette 0.5s ease forwards;
}

@keyframes gargantua-vignette {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Smooth, peaceful celestial appearance during transition */
html.is-animating .gargantua-container,
html.is-leaving .gargantua-container {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

html.is-rendering .gargantua-container {
  opacity: 0.25;
  transform: translate(-50%, -50%) scale(1.03);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

/* Content Dissolve: Zero rotational spin, peaceful gravitational fade */
.transition-void {
  transition: opacity 0.45s cubic-bezier(0.3, 0, 0.2, 1),
              transform 0.45s cubic-bezier(0.3, 0, 0.2, 1),
              filter 0.45s ease;
  transform-origin: center center;
}

/* Peaceful evaporation into the horizon */
html.is-animating .transition-void,
html.is-leaving .transition-void {
  opacity: 0;
  transform: scale(0.98) translateY(-6px);
  filter: blur(5px);
}

/* Serene emergence from the void */
html.is-rendering .transition-void {
  opacity: 0;
  transform: scale(1.01) translateY(6px);
  filter: blur(4px);
}

/* ---------------- Connect Navigation Button & Page Styles ---------------- */
.btn-header-connect {
  display: inline-block;
  margin-left: auto;
  white-space: nowrap;
  flex-shrink: 0;
  padding: 0.35rem 0.85rem;
  border: 1px solid #ffffff;
  color: #000000;
  background-color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

.btn-header-connect:hover {
  background-color: #000000;
  color: #ffffff;
  border-color: #ffffff;
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.5);
  text-decoration: none;
}

.connect-overview-container {
  max-width: 900px;
  margin: 0 auto;
}

.connect-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.connect-cta-banner {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
}

.connect-destination-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.btn-connect-primary {
  display: inline-block;
  padding: 0.75rem 2rem;
  background-color: #ffffff;
  color: #000000;
  border: 1px solid #ffffff;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.25);
}

.btn-connect-primary:hover {
  background-color: #000000;
  color: #ffffff;
  border-color: #ffffff;
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.6);
  text-decoration: none;
}

.connect-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
  margin: 3.5rem 0;
}

.connect-pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.connect-pillar-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-subtle);
  padding: 2rem;
  position: relative;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.connect-pillar-card:hover {
  border-color: #ffffff;
  transform: translateY(-2px);
}

.pillar-marker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.pillar-title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: #ffffff;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.pillar-desc {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.connect-callout-panel {
  border: 1px solid var(--border-subtle);
  background: #0a0a0a;
  padding: 3rem 2rem;
  text-align: center;
  margin-top: 2rem;
}

.connect-callout-heading {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: #ffffff;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.connect-callout-body {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 2rem auto;
  line-height: 1.7;
}

.connect-callout-actions {
  display: flex;
  justify-content: center;
}