/* Global CSS Reset & Variables */
:root {
  /* Color Tokens */
  --bg-primary: #080a08;
  --bg-secondary: #111511;
  --bg-tertiary: #161c16;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --color-green: #10b981;
  --color-green-glow: #00ff66;
  --color-green-dark: #064e3b;
  --color-green-trans: rgba(16, 185, 129, 0.15);
  --color-red: #ef4444;
  --color-red-glow: #ff3344;
  --color-red-trans: rgba(239, 68, 68, 0.15);
  --border-glass: rgba(16, 185, 129, 0.2);
  --border-glass-hover: rgba(16, 185, 129, 0.45);
  
  /* Reading Paper Mode variables */
  --paper-bg: #f7f2e8;
  --paper-text: #2f281e;
  --paper-muted: #7c7262;
  --paper-border: rgba(124, 114, 98, 0.25);
  --paper-green: #2c6e49;

  /* Typography */
  --font-sans: 'Outfit', sans-serif;
  --font-mono: 'Space Grotesk', sans-serif;
  --font-telemetry: 'Courier Prime', monospace;
  
  /* Transition durations */
  --t-fast: 0.2s;
  --t-normal: 0.3s;
  --t-slow: 0.5s;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Scroll timelines for CSS scroll-driven progress bar */
@supports (animation-timeline: scroll()) {
  #top-progress {
    animation: grow-progress-bar auto linear;
    animation-timeline: scroll(root);
  }
}

@keyframes grow-progress-bar {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-green), var(--color-green-glow));
  z-index: 1000;
  transform-origin: 0% 50%;
  transform: scaleX(0);
}

/* Custom Scrollbar Styles */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-green-dark);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-green);
  box-shadow: 0 0 6px var(--color-green-glow);
}

/* Grid Backdrop Styling */
.grid-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: 
    linear-gradient(rgba(8, 10, 8, 0.98), rgba(8, 10, 8, 0.98)),
    linear-gradient(90deg, rgba(16, 185, 129, 0.02) 1px, transparent 1px),
    linear-gradient(rgba(16, 185, 129, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 25px 25px, 25px 25px;
  z-index: -2;
  pointer-events: none;
}

/* Glassmorphism utility */
.glassmorphic {
  background: rgba(17, 21, 17, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
}

/* Layout Framework */
.site-header {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(8, 10, 8, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-glass);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1300px;
  margin: 0 auto;
  padding: 1rem 2rem;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.header-logo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px solid var(--color-green);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.header-title-wrapper {
  display: flex;
  flex-direction: column;
}

.header-pre {
  font-size: 0.65rem;
  letter-spacing: 0.2rem;
  color: var(--color-green);
  font-family: var(--font-mono);
  font-weight: 700;
}

.header-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.05rem;
  color: var(--text-primary);
}

/* Hamburger Toggle Button */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 101;
}

.toggle-bar {
  width: 100%;
  height: 2px;
  background-color: var(--color-green);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  box-shadow: 0 0 5px rgba(16, 185, 129, 0.4);
}

.menu-toggle.active .toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active .toggle-bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active .toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Main Navigation */
.main-nav {
  display: flex;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--t-fast) ease;
  font-family: var(--font-mono);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-green-glow);
  text-shadow: 0 0 8px rgba(0, 255, 102, 0.4);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-green-glow);
  box-shadow: 0 0 8px var(--color-green-glow);
  transition: width var(--t-fast) ease;
}

.nav-link.active::after, .nav-link:hover::after {
  width: 100%;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.control-group {
  display: flex;
  border: 1px solid var(--border-glass);
  border-radius: 4px;
  overflow: hidden;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: bold;
  transition: all var(--t-fast) ease;
}

.icon-btn:hover {
  background: var(--color-green-trans);
  color: var(--color-green-glow);
  text-shadow: 0 0 5px var(--color-green-glow);
}

/* Container Structure */
.main-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 2.5rem 2rem 5rem 2rem;
  min-height: calc(100vh - 180px);
}

.content-section {
  display: none;
  animation: fade-in var(--t-normal) ease forwards;
}

.content-section.active-section {
  display: block;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Buttons styling */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--t-fast) ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-green);
  border: 1px solid var(--color-green);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: var(--color-green-glow);
  border-color: var(--color-green-glow);
  box-shadow: 0 0 15px rgba(0, 255, 102, 0.6);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-green-trans);
  border-color: var(--color-green);
  color: var(--color-green-glow);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.2);
}

.btn-secondary:disabled {
  color: var(--text-muted);
  border-color: rgba(255,255,255,0.05);
  cursor: not-allowed;
}

.btn-full {
  width: 100%;
}

/* SECTION 1: ARCHIVES (SHOWCASE) */
.hero-block {
  position: relative;
  overflow: hidden;
  text-align: center;
  margin-bottom: 4rem;
  padding: 4rem 2rem;
  border-radius: 8px;
  border: 1px solid var(--border-glass);
  background: rgba(8, 10, 8, 0.45);
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translate(-50%, -50%);
  z-index: 1;
  opacity: 0.35;
  pointer-events: none;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(8, 10, 8, 0.3) 0%, rgba(8, 10, 8, 0.75) 100%);
  z-index: 2;
  pointer-events: none;
}

.hero-block > *:not(video):not(.hero-overlay) {
  position: relative;
  z-index: 3;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-green-glow);
  border: 1px solid var(--color-green-glow);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  background: var(--color-green-trans);
  box-shadow: 0 0 8px rgba(0, 255, 102, 0.25);
}

.hero-headline {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.05rem;
  color: #ffffff;
}

.hero-subline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
  margin-bottom: 4rem;
}

.book-card {
  display: flex;
  flex-direction: column;
  background: rgba(17, 21, 17, 0.8);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  overflow: hidden;
  transition: all var(--t-normal) ease;
}

.card-glow:hover {
  transform: translateY(-5px);
  border-color: var(--color-green);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.2);
}

.book-cover-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--border-glass);
}

.book-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-normal) ease;
}

.card-glow:hover .book-cover-img {
  transform: scale(1.05);
}

.lock-overlay {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(8, 10, 8, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  z-index: 2;
}

.lock-icon {
  font-size: 2.5rem;
  filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.1));
}

.lock-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  color: var(--text-muted);
}

.book-info {
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.book-volume {
  font-family: var(--font-mono);
  color: var(--color-green);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05rem;
  margin-bottom: 0.4rem;
  font-weight: 700;
}

.book-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: #fff;
}

.book-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
  flex-grow: 1;
}

.book-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.8rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-green-glow);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.tag-alert {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-red);
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.locked-card {
  border-color: rgba(255,255,255,0.05);
  opacity: 0.8;
}

.intro-cta-block {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 2.5rem;
  margin-top: 5rem;
}

.cta-logo {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 1.5px solid var(--color-green);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.25);
}

.cta-text h4 {
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 0.5rem;
}

.cta-text p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .intro-cta-block {
    flex-direction: column;
    text-align: center;
    padding: 1.8rem;
  }
}

/* SECTION 2: INTERACTIVE DOCUMENT READER */
.reader-container {
  display: grid;
  grid-template-columns: 300px 1fr;
  height: 75vh;
  min-height: 600px;
  overflow: hidden;
  border-radius: 12px;
}

@media (max-width: 900px) {
  .reader-container {
    grid-template-columns: 1fr;
    height: auto;
    max-height: none;
  }
}

.reader-sidebar {
  border-right: 1px solid var(--border-glass);
  display: flex;
  flex-direction: column;
  background: rgba(12, 16, 12, 0.85);
  overflow-y: auto;
}

@media (max-width: 900px) {
  .reader-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-glass);
    max-height: 250px;
  }
}

.sidebar-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-glass);
}

.sidebar-title-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-green);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05rem;
}

.active-doc-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-top: 0.2rem;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.toc-item {
  width: 100%;
}

.toc-link {
  display: block;
  width: 100%;
  padding: 1rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(16, 185, 129, 0.05);
  transition: all var(--t-fast) ease;
  text-align: left;
  background: transparent;
  border: none;
  border-left: 3px solid transparent;
  cursor: pointer;
}

.toc-link:hover {
  color: var(--color-green-glow);
  background: rgba(16, 185, 129, 0.03);
}

.toc-link.active {
  color: var(--color-green-glow);
  background: var(--color-green-trans);
  border-left-color: var(--color-green-glow);
  font-weight: 600;
  text-shadow: 0 0 5px rgba(0, 255, 102, 0.3);
}

.reading-pane {
  display: flex;
  flex-direction: column;
  background: rgba(8, 10, 8, 0.6);
  height: 100%;
  overflow: hidden;
}

.reading-pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 2rem;
  border-bottom: 1px solid var(--border-glass);
  background: rgba(12, 16, 12, 0.8);
}

.doc-meta-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.doc-vol-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: var(--color-green-dark);
  color: var(--color-green-glow);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.doc-chapter-heading {
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
}

.reader-controls-pane {
  display: flex;
  gap: 0.5rem;
}

.reader-theme-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--t-fast) ease;
}

.reader-theme-btn:hover, .reader-theme-btn.active {
  border-color: var(--color-green);
  color: var(--color-green-glow);
}

.pane-progress-wrapper {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.05);
}

.pane-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-green-glow);
  box-shadow: 0 0 5px var(--color-green-glow);
  transition: width 0.1s linear;
}

.reader-text-content {
  flex-grow: 1;
  overflow-y: auto;
  padding: 2.5rem;
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 900px;
  margin: 0 auto;
}

.reader-text-content p {
  margin-bottom: 1.5rem;
}

.reader-text-content h2, .reader-text-content h3 {
  color: #fff;
  margin: 2.5rem 0 1.2rem 0;
  font-weight: 700;
  letter-spacing: -0.02rem;
}

.reader-text-content h2 { font-size: 1.8rem; border-bottom: 1px solid var(--border-glass); padding-bottom: 0.5rem; }
.reader-text-content h3 { font-size: 1.4rem; }

.reader-text-content .references-block {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-glass);
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-family: var(--font-telemetry);
}

.reader-text-content .references-block h4 {
  color: #fff;
  margin-bottom: 1rem;
  font-family: var(--font-sans);
  font-size: 1.1rem;
}

.reader-text-content .references-block li {
  margin-bottom: 0.6rem;
  list-style-type: none;
}

.reader-text-content blockquote {
  border-left: 3px solid var(--color-green);
  background: var(--color-green-trans);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 4px 4px 0;
}

/* Styled inline keywords matching glossary terms */
.glossary-term {
  color: var(--color-green-glow);
  border-bottom: 1px dotted var(--color-green);
  cursor: help;
  font-weight: 600;
  transition: all var(--t-fast) ease;
  position: relative;
}

.glossary-term:hover {
  background: var(--color-green-trans);
  text-shadow: 0 0 5px var(--color-green-glow);
}

.reader-footer {
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--border-glass);
  display: flex;
  justify-content: space-between;
  background: rgba(12, 16, 12, 0.8);
}

/* Alternate Reading Themes */
.reader-text-content.theme-matrix {
  color: var(--color-green-glow);
  font-family: var(--font-telemetry);
  text-shadow: 0 0 3px rgba(0, 255, 102, 0.35);
}
.reader-text-content.theme-matrix h2, .reader-text-content.theme-matrix h3 {
  color: var(--color-green-glow);
}

.reader-text-content.theme-sepia {
  color: var(--paper-text);
  font-family: var(--font-sans);
}
.reader-text-content.theme-sepia h2, .reader-text-content.theme-sepia h3 {
  color: var(--paper-text);
  border-bottom-color: var(--paper-border);
}
.reader-text-content.theme-sepia .glossary-term {
  color: var(--paper-green);
  border-bottom-color: var(--paper-green);
}
.reader-text-content.theme-sepia blockquote {
  border-left-color: var(--paper-green);
  background: rgba(44, 110, 73, 0.08);
}
.reading-pane.theme-sepia {
  background: var(--paper-bg);
}
.reading-pane-header.theme-sepia, .reader-footer.theme-sepia {
  background: #ebe4d5;
  border-color: var(--paper-border);
}
.reading-pane-header.theme-sepia .doc-chapter-heading, 
.reading-pane-header.theme-sepia .doc-vol-badge, 
.reading-pane.theme-sepia .active-doc-heading {
  color: var(--paper-text);
}
.reading-pane-header.theme-sepia .doc-vol-badge {
  background: rgba(44, 110, 73, 0.15);
  color: var(--paper-green);
}

/* SECTION 3: MASTER RESEARCH MATRIX (GLOSSARY) */
.section-intro {
  text-align: center;
  margin-bottom: 3rem;
}

.section-heading {
  font-size: 2.2rem;
  font-weight: 700;
  margin: 0.5rem 0;
  color: #fff;
}

.section-subheading {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.matrix-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 2rem;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

@media (max-width: 900px) {
  .matrix-controls {
    flex-direction: column;
    align-items: stretch;
  }
}

.search-wrapper {
  position: relative;
  flex-grow: 1;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

#matrix-search {
  width: 100%;
  background: rgba(8, 10, 8, 0.6);
  border: 1px solid var(--border-glass);
  border-radius: 4px;
  padding: 0.7rem 1rem 0.7rem 2.8rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all var(--t-fast) ease;
}

#matrix-search:focus {
  outline: none;
  border-color: var(--color-green);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
  background: rgba(8, 10, 8, 0.9);
}

.filter-wrapper {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--t-fast) ease;
}

.filter-btn:hover, .filter-btn.active {
  background: var(--color-green-trans);
  color: var(--color-green-glow);
  border-color: var(--color-green-glow);
  box-shadow: 0 0 8px rgba(0, 255, 102, 0.2);
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.glossary-card {
  background: rgba(17, 21, 17, 0.65);
  border: 1px solid var(--border-glass);
  border-radius: 6px;
  padding: 1.5rem;
  cursor: pointer;
  transition: all var(--t-normal) ease;
  display: flex;
  flex-direction: column;
}

.glossary-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-green);
  box-shadow: 0 5px 15px rgba(16, 185, 129, 0.15);
}

.card-category {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05rem;
  color: var(--color-green);
  margin-bottom: 0.5rem;
  font-weight: bold;
}

.card-title-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.8rem;
  line-height: 1.3;
}

.card-desc-snippet {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer-info {
  display: flex;
  justify-content: flex-end;
  margin-top: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-green-glow);
  opacity: 0.7;
}

.glossary-card:hover .card-footer-info {
  opacity: 1;
  text-shadow: 0 0 5px var(--color-green-glow);
}

/* SECTION 4: PODCAST HUB */
.podcast-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  align-items: stretch;
}

@media (max-width: 900px) {
  .podcast-layout {
    grid-template-columns: 1fr;
  }
}

.podcast-player-panel {
  display: flex;
  flex-direction: column;
  padding: 2rem;
}

.player-top {
  margin-bottom: 2rem;
}

.station-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-green);
}

.telemetry-ping {
  width: 8px;
  height: 8px;
  background-color: var(--color-green-glow);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-green-glow);
  animation: ping 1.5s infinite ease-in-out;
}

@keyframes ping {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.8); opacity: 0; }
  100% { transform: scale(1); opacity: 0; }
}

.active-track-details {
  margin-top: 0.8rem;
}

.active-track-details h3 {
  font-size: 1.5rem;
  color: #fff;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.active-track-details p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.visualizer-container {
  position: relative;
  border: 1px solid rgba(16, 185, 129, 0.1);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 1.5rem;
  background: rgba(8, 10, 8, 0.9);
}

/* Episode Cover Art in visualizer area */
.episode-cover-wrap {
  position: relative;
  width: 100%;
  height: 180px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #050806;
}

.episode-cover-img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 8px;
  border: 2px solid rgba(16, 185, 129, 0.4);
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.3), 0 0 60px rgba(0,0,0,0.8);
  transition: transform 0.4s ease, box-shadow 0.4s ease, opacity 0.2s ease;
  display: block;
}

.episode-cover-img:hover {
  transform: scale(1.03);
  box-shadow: 0 0 40px rgba(16, 185, 129, 0.5), 0 0 80px rgba(0,0,0,0.9);
}

/* CRT scan-line overlay on the cover art */
.cover-scan-lines {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
  z-index: 2;
}

/* Spotify embedded iframe */
.spotify-embed-wrapper {
  padding: 0.75rem;
  background: rgba(8, 10, 8, 0.85);
}

/* Episode selector buttons row */
.episode-selector-btns {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.ep-select-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem 1rem;
  background: rgba(16, 185, 129, 0.04);
  border: 1px solid rgba(16, 185, 129, 0.08);
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
  transition: all var(--t-fast) ease;
  color: var(--text-secondary);
  width: 100%;
}

.ep-select-btn:hover {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--text-primary);
}

.ep-select-btn.active {
  background: var(--color-green-trans);
  border-color: var(--color-green);
  color: #fff;
}

.ep-num-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-green);
  font-weight: 700;
  min-width: 24px;
}

.ep-btn-title {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 500;
}

.ep-btn-dur {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.spotify-open-full {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-glass);
}

.spotify-full-btn {
  width: 100%;
  text-align: center;
  justify-content: center;
}



#visualizer-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.visualizer-offline {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05rem;
  background: rgba(8, 10, 8, 0.95);
  z-index: 2;
  transition: opacity var(--t-normal) ease;
  pointer-events: none;
}

.visualizer-offline.hidden {
  opacity: 0;
}

.player-controls-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.podcast-progress-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.time-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  min-width: 40px;
}

.podcast-progress-bg {
  flex-grow: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  cursor: pointer;
  position: relative;
}

.podcast-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--color-green);
  border-radius: 3px;
  box-shadow: 0 0 5px var(--color-green-glow);
  position: relative;
}

.player-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  position: relative;
}

.pod-btn {
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--t-fast) ease;
}

.pod-btn:hover {
  background: var(--color-green-trans);
  color: var(--color-green-glow);
  border-color: var(--color-green-glow);
  box-shadow: 0 0 8px var(--color-green-glow);
}

.play-btn-big {
  width: 56px;
  height: 56px;
  background: var(--color-green);
  color: var(--bg-primary);
  border: none;
  font-size: 1.2rem;
}

.play-btn-big:hover {
  background: var(--color-green-glow);
  box-shadow: 0 0 15px var(--color-green-glow);
  transform: scale(1.05);
}

.pod-vol-wrapper {
  position: absolute;
  right: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

@media (max-width: 600px) {
  .pod-vol-wrapper {
    position: static;
    margin-top: 1rem;
    width: 100%;
    justify-content: center;
  }
  .player-buttons {
    flex-wrap: wrap;
  }
}

#pod-volume {
  width: 80px;
  accent-color: var(--color-green);
}

.podcast-list-panel {
  display: flex;
  flex-direction: column;
  padding: 2rem;
}

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

.panel-header h4 {
  font-size: 1.1rem;
  color: #fff;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: var(--color-green-dark);
  color: var(--color-green-glow);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
}

.episode-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  overflow-y: auto;
  max-height: 380px;
}

.episode-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--t-fast) ease;
}

.episode-item:hover {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(16, 185, 129, 0.1);
}

.episode-item.active {
  background: var(--color-green-trans);
  border-color: var(--border-glass);
}

.ep-num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-green);
  font-weight: 700;
}

.ep-meta {
  flex-grow: 1;
}

.ep-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.1rem;
}

.ep-dur {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.spotify-link-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.6;
  transition: opacity var(--t-fast) ease, transform var(--t-fast) ease;
}

.spotify-link-icon:hover {
  opacity: 1;
  transform: scale(1.15);
}

/* SECTION 5: SECURE TELEMETRY UPLINK */
.uplink-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: stretch;
}

@media (max-width: 900px) {
  .uplink-layout {
    grid-template-columns: 1fr;
  }
}

.uplink-card {
  padding: 2rem;
}

.card-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.4rem;
}

.card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.5;
}

.telemetry-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-row label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-green);
  text-transform: uppercase;
}

.telemetry-form select, .telemetry-form textarea {
  background: rgba(8, 10, 8, 0.6);
  border: 1px solid var(--border-glass);
  border-radius: 4px;
  padding: 0.7rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all var(--t-fast) ease;
}

.telemetry-form textarea {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.5;
  resize: vertical;
}

.telemetry-form select:focus, .telemetry-form textarea:focus {
  outline: none;
  border-color: var(--color-green-glow);
  box-shadow: 0 0 8px rgba(0, 255, 102, 0.25);
  background: rgba(8, 10, 8, 0.85);
}

.drop-zone {
  border: 1.5px dashed var(--border-glass);
  border-radius: 6px;
  padding: 1.8rem;
  text-align: center;
  cursor: pointer;
  background: rgba(8, 10, 8, 0.3);
  transition: all var(--t-fast) ease;
}

.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--color-green-glow);
  background: var(--color-green-trans);
  box-shadow: inset 0 0 15px rgba(16, 185, 129, 0.05);
}

.drop-icon {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
  display: block;
}

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

.drop-text .highlight {
  color: var(--color-green-glow);
  text-decoration: underline;
}

.hidden-file-input {
  display: none;
}

.file-list-preview {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  padding: 0.4rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.file-name {
  color: var(--text-primary);
}

.file-remove {
  background: transparent;
  border: none;
  color: var(--color-red);
  cursor: pointer;
  font-weight: bold;
}

.terminal-panel {
  background: #040604;
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.terminal-panel::after {
  content: "";
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: 
    linear-gradient(rgba(18, 16, 18, 0) 50%, rgba(0, 0, 0, 0.25) 50%);
  background-size: 100% 4px;
  z-index: 10;
  pointer-events: none;
}

.terminal-header {
  background: #0d120d;
  padding: 0.7rem 1.2rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(16, 185, 129, 0.15);
}

.term-status-led {
  width: 8px;
  height: 8px;
  background-color: var(--color-green-glow);
  border-radius: 50%;
  margin-right: 0.8rem;
  box-shadow: 0 0 6px var(--color-green-glow);
}

.term-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05rem;
  color: var(--text-secondary);
  flex-grow: 1;
}

.header-decorations {
  display: flex;
  gap: 0.4rem;
  font-size: 0.65rem;
  color: var(--color-green);
  opacity: 0.6;
}

.terminal-body {
  flex-grow: 1;
  padding: 1.5rem;
  overflow-y: auto;
  font-family: var(--font-telemetry);
  font-size: 0.82rem;
  line-height: 1.6;
  height: 320px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.term-line {
  word-break: break-all;
}

.system-line {
  color: var(--text-muted);
}

.user-cmd-line {
  color: var(--color-green-glow);
}

.response-line {
  color: var(--text-primary);
}

.error-line {
  color: var(--color-red);
  text-shadow: 0 0 5px rgba(239, 68, 68, 0.4);
}

.terminal-input-row {
  display: flex;
  align-items: center;
  background: #070907;
  padding: 0.8rem 1.2rem;
  border-top: 1px solid rgba(16, 185, 129, 0.15);
  position: relative;
  z-index: 11;
}

.term-prompt {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-green);
  margin-right: 0.5rem;
  font-weight: bold;
}

#terminal-input {
  flex-grow: 1;
  background: transparent;
  border: none;
  color: var(--color-green-glow);
  font-family: var(--font-telemetry);
  font-size: 0.82rem;
}

#terminal-input:focus {
  outline: none;
}

/* Detail Modal Styles */
.modal-backdrop {
  position: fixed;
  top: 0; left: 0; width: 100vw; height: 100vh;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-normal) ease;
  padding: 1.5rem;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: all;
}

.modal-content {
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modal-scale var(--t-normal) cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes modal-scale {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 1.5rem 2rem 0.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  transition: color var(--t-fast) ease;
}

.modal-close-btn:hover {
  color: var(--color-red);
}

.modal-heading {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  padding: 0.2rem 2rem 1rem 2rem;
  border-bottom: 1px solid var(--border-glass);
}

.modal-body-content {
  padding: 2rem;
  overflow-y: auto;
  font-size: 0.98rem;
  line-height: 1.6;
}

.modal-body-content p {
  margin-bottom: 1rem;
}

.modal-body-content strong {
  color: var(--color-green-glow);
}

.modal-body-content ul {
  padding-left: 1.5rem;
  margin: 1rem 0;
}

.modal-body-content li {
  margin-bottom: 0.5rem;
}

.modal-footer {
  padding: 1.2rem 2rem;
  border-top: 1px solid var(--border-glass);
  display: flex;
  justify-content: flex-end;
  background: rgba(12, 16, 12, 0.85);
}

/* Site Footer */
.site-footer {
  border-top: 1px solid var(--border-glass);
  background: rgba(8, 10, 8, 0.9);
  padding: 3rem 2rem;
  margin-top: 5rem;
}

.footer-inner {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 768px) {
  .footer-inner {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
}

.footer-copy p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.footer-copy .telemetry-disclaimer {
  color: var(--color-green);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05rem;
}

.footer-logo-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15rem;
  color: var(--text-secondary);
}

/* Mobile Navigation (max-width: 900px) */
@media (max-width: 900px) {
  .menu-toggle {
    display: flex;
  }
  
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%; /* offscreen initial state */
    width: 280px;
    height: 100vh;
    background: rgba(8, 10, 8, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-left: 1px solid var(--border-glass);
    padding: 6rem 2rem 2rem 2rem;
    transition: right 0.3s ease;
    z-index: 100;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }
  
  .main-nav.active {
    right: 0;
  }
  
  .nav-list {
    flex-direction: column;
    gap: 2rem;
    width: 100%;
  }
  
  .nav-link {
    font-size: 1.1rem;
    width: 100%;
    display: block;
    padding: 0.5rem 0;
  }
}