/* FutureIQ Portal - Premium Dark Mode Design */

:root {
  /* Core Colors - Dark Theme */
  --bg-primary: #0f0f0f;
  --bg-secondary: #1f1f1f; /* Card background */
  --bg-tertiary: #2a2a2a; /* Hover states */
  --bg-overlay: rgba(0, 0, 0, 0.8);
  
  --text-primary: #f1f1f1;
  --text-secondary: #aaaaaa;
  --text-muted: #717171;
  
  --accent-color: #3ea6ff; /* YouTube-ish Blue for actions */
  --accent-hover: #65b8ff;
  --accent-danger: #ff4e45; /* Red for brand moments */
  
  --border-color: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.2);
  
  /* Utilities */
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  
  --header-height: 56px;
  --sidebar-width: 240px;
  
  /* Typography */
  --font-sans: "Roboto", "Arial", sans-serif;
  --font-mono: "Fira Code", monospace;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.5);
}

/* Reset & Base */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  margin: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 500;
}

p {
  margin: 0;
}

/* Layout */
.page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
}

.header-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1800px;
  margin: 0 auto;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-right: 2rem;
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.brand span {
  color: var(--text-primary);
}

.brand .highlight {
  color: var(--accent-color);
}

.tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-left: 0.5rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--border-color);
  display: none; /* Hide on small screens */
}

@media (min-width: 768px) {
    .tagline { display: block; }
}

@media (max-width: 640px) {
  .site-header { padding: 0 0.75rem; }
  .header-shell { gap: 0.6rem; }
  .brand-group { margin-right: 0; }
  .search-container {
    flex: 0 1 4.2rem;
    min-width: 4.2rem;
    margin: 0;
  }
  .search-input { display: none; }
  .site-header .search-suggest { display: none; }
  .search-btn {
    width: 3.6rem;
    border-radius: var(--radius-pill);
    padding: 0.6rem 0;
  }
  .nav-links {
    flex: 0 0 auto;
    gap: 0.25rem;
  }
  .nav-item {
    padding: 0.45rem 0.65rem;
    font-size: 0.85rem;
  }
}

/* Navigation */
.nav-links {
  display: flex;
  gap: 0.5rem;
}

.nav-item {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.nav-item:hover, .nav-item.active {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.account-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  max-width: 12rem;
}

.account-link img {
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 50%;
}

.account-link span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sign-in-link,
.google-sign-in {
  background: #fff;
  color: #202124 !important;
  border: 1px solid #dadce0;
}

.sign-in-link:hover,
.google-sign-in:hover {
  background: #f8fafd !important;
  color: #202124 !important;
}

/* Search Bar (Header) */
.search-container {
  flex: 1;
  max-width: 600px;
  margin: 0 2rem;
  position: relative;
}

.search-form {
  display: flex;
  align-items: center;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.search-input {
  width: 100%;
  background: #121212;
  border: 1px solid var(--border-color);
  border-right: none;
  border-radius: var(--radius-pill) 0 0 var(--radius-pill);
  padding: 0.6rem 1rem 0.6rem 1.2rem;
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.2s;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}

.search-input:focus {
  outline: none;
  border-color: #1c62b9;
}

.search-suggest {
  position: absolute;
  z-index: 250;
  top: calc(100% + 0.4rem);
  left: 0;
  right: 0;
  background: #181818;
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.35rem;
  overflow: hidden;
}

.search-suggest[hidden] { display: none; }

.search-suggest-hint {
  padding: 0.35rem 0.55rem 0.25rem;
  color: var(--text-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.search-suggest-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--text-primary);
  padding: 0.55rem 0.6rem;
  border-radius: var(--radius-sm);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.search-suggest-row:hover,
.search-suggest-row.active {
  background: var(--bg-tertiary);
}

.search-suggest-main {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.9rem;
  font-weight: 600;
}

.search-suggest-kind {
  flex: 0 0 auto;
  color: var(--text-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.search-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
  padding: 0.6rem 1.25rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background 0.2s;
}

.search-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.search-hero {
  text-align: center;
  padding: 4rem 1rem;
  max-width: 680px;
  margin: 0 auto;
}

.search-hero h2 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.search-hero-copy {
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0 auto 1.35rem;
  max-width: 560px;
}

.search-hero-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.search-hero-input {
  width: 100%;
  padding: 1rem 1.2rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1.05rem;
  outline: none;
}

.search-hero-input:focus {
  border-color: var(--accent-color);
}

.search-hero-btn {
  padding: 0 1.35rem;
  background: var(--accent-color);
  border: none;
  border-radius: var(--radius-pill);
  color: #07121f;
  font-weight: 700;
  cursor: pointer;
}

.search-hero-btn:hover {
  background: var(--accent-hover);
}

.search-examples {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.86rem;
}

.search-examples button {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--text-secondary);
  padding: 0.4rem 0.7rem;
  font: inherit;
  cursor: pointer;
}

.search-examples button:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-hover);
  color: var(--text-primary);
}
.search-results { display: flex; flex-direction: column; gap: 0.7rem; }
.search-result-card {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  min-height: 108px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-secondary);
}
.search-result-card.concept { grid-template-columns: 1fr; border-left: 3px solid #74d7a5; }
.search-result-card:hover { border-color: var(--border-hover); background: var(--bg-tertiary); }
.search-result-thumb { aspect-ratio: 16 / 9; min-width: 0; overflow: hidden; }
.search-result-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.search-result-content { padding: 0.8rem 1rem; min-width: 0; }
.search-result-kicker { color: var(--text-muted); font-size: 0.68rem; text-transform: uppercase; margin-bottom: 0.2rem; }
.search-result-content h2 { font-size: 1rem; font-weight: 650; overflow-wrap: anywhere; }
.search-result-meta { display: flex; gap: 0.35rem; margin-top: 0.25rem; color: var(--text-muted); font-size: 0.72rem; }
.search-result-snippets { color: var(--text-secondary); font-size: 0.86rem; line-height: 1.45; margin-top: 0.45rem; }
.search-result-snippets p + p { margin-top: 0.3rem; }
.search-result-snippets mark { background: #6b5718; color: var(--text-primary); }
@media (max-width: 640px) {
  .search-result-card { grid-template-columns: 112px minmax(0, 1fr); }
}

@media (max-width: 640px) {
  .search-hero {
    padding: 2rem 0 3rem;
  }
  .search-hero h2 {
    font-size: 1.65rem;
  }
  .search-hero-form {
    flex-direction: column;
  }
  .search-hero-btn {
    min-height: 3rem;
  }
}

/* Main Content */
.main-shell {
  flex: 1;
  width: 100%;
  max-width: 1800px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Grid Layout for Videos */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem 1rem;
}

/* Video Card */
.video-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform 0.2s;
}

.video-card:hover .thumbnail-img {
    transform: scale(1.03);
}

.thumbnail-wrapper {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-secondary);
  aspect-ratio: 16/9;
}

.thumbnail-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.duration-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 3px 6px;
  border-radius: 4px;
}

.card-content {
  display: flex;
  gap: 0.75rem;
}

.card-meta {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.card-tags {
    margin-top: 0.25rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.tag {
    font-size: 0.7rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Pagination */
.pagination {
  margin-top: 3rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding-bottom: 2rem;
}

.page-btn {
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  transition: background 0.2s;
}

.page-btn:hover {
  background: var(--bg-tertiary);
}

.page-info {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  margin-bottom: 0.5rem;
}

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

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

/* Legal / prose pages (about, privacy, terms) */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 1rem 0 3rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.legal h1 {
  color: var(--text-primary);
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.legal h2 {
  color: var(--text-primary);
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-color);
}

.legal h3 {
  color: var(--text-primary);
  font-size: 1.05rem;
  margin: 1.25rem 0 0.5rem;
}

.legal p {
  margin-bottom: 1rem;
}

.legal ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.legal li {
  margin-bottom: 0.5rem;
}

.legal a {
  color: var(--accent-color);
}

.legal a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.legal code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.35em;
  word-break: break-word;
}

.legal-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem !important;
}

.legal-footnote {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Detail Page - Theater Mode */
.detail-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 1024px) {
    .detail-container {
        grid-template-columns: 2.5fr 1fr;
        align-items: start;
    }
}

.player-wrapper {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 1rem;
}

.player-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.video-header h1 {
    font-size: 1.4rem;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

.video-stats {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.description-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 1rem;
    font-size: 0.95rem;
    white-space: pre-wrap;
    line-height: 1.6;
}

/* Transcript Column */
.transcript-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    height: calc(100vh - 100px);
    position: sticky;
    top: 70px;
    overflow: hidden;
}

.transcript-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    background: rgba(31, 31, 31, 0.95);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.transcript-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.transcript-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.transcript-content p {
    font-family: var(--font-sans); /* Easier to read on screen than serif */
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
}

.transcript-content p:hover {
    color: var(--text-primary);
}

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

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #555;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #777;
}

/* Interactive Transcript */
.transcript-line {
    cursor: pointer;
    padding: 0.5rem 0.5rem;
    border-radius: var(--radius-sm);
    transition: background 0.15s ease;
    border-left: 3px solid transparent;
}

.transcript-line:hover {
    background: var(--bg-tertiary);
    border-left-color: var(--accent-color);
}

.transcript-line time {
    display: inline-block;
    min-width: 45px;
    font-size: 0.75rem;
    color: var(--accent-color);
    font-family: var(--font-mono);
    margin-right: 0.5rem;
    user-select: none;
    opacity: 0.7;
}

.transcript-line:hover time {
    opacity: 1;
}

/* Search Snippets */
.snippet-card {
    font-size: 0.85rem;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 0.6rem;
    border-radius: var(--radius-sm);
    line-height: 1.4;
    border-left: 2px solid var(--accent-color);
    
    /* Line Clamping */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Transcript Segments */
.transcript-segment {
    padding: 2px 0;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.transcript-segment:hover {
    background: var(--bg-tertiary);
}

.transcript-segment.active {
    background: rgba(62, 166, 255, 0.15);
    color: var(--text-primary);
    box-shadow: 0 0 0 2px rgba(62, 166, 255, 0.1);
}

.transcript-line:hover time {
    opacity: 1;
}

/* ============================================================== KB / Wiki */
.kb-hero {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}
.kb-hero h1 { font-size: 2.2rem; font-weight: 700; }
.kb-sub {
  margin-top: 0.6rem;
  max-width: 640px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.kb-stats {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.2rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.kb-stats strong { color: var(--text-primary); font-size: 1.1rem; }
.kb-actions { display: flex; gap: 0.75rem; margin-top: 1.3rem; flex-wrap: wrap; }

.kb-btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--accent-color);
  color: #07121f;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.2s;
}
.kb-btn:hover { background: var(--accent-hover); }
.kb-btn.ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.kb-btn.ghost:hover { background: var(--bg-tertiary); border-color: var(--border-hover); }

.kb-empty {
  color: var(--text-muted);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.2rem;
  margin: 1rem 0;
}
.kb-empty code { font-family: var(--font-mono); color: var(--text-secondary); }

.kb-section-note { color: var(--text-secondary); margin: 0.3rem 0 1rem; }
.kb-hubs h2, .kb-block h2 { font-size: 1.3rem; margin-bottom: 0.4rem; }

/* Card grid (landing hubs) */
.kb-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.kb-card {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
}
.kb-card:hover {
  border-color: var(--accent-color);
  background: var(--bg-tertiary);
  transform: translateY(-2px);
}
.kb-card-name { font-weight: 600; font-size: 1.05rem; color: var(--text-primary); }
.kb-card-summary {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.kb-card-degree { color: var(--text-muted); font-size: 0.75rem; margin-top: auto; }

.kb-tag {
  display: inline-block;
  font-size: 0.7rem;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  align-self: flex-start;
}
.kb-tag.stub {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* Concept / title page */
.kb-concept { max-width: 900px; }
.kb-crumbs { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 1rem; }
.kb-crumbs a { color: var(--accent-color); }
.kb-concept-head { margin-bottom: 0.5rem; }
.kb-concept-head h1 { font-size: 2rem; font-weight: 700; }
.kb-concept-meta { display: flex; gap: 0.5rem; margin-top: 0.5rem; flex-wrap: wrap; }
.kb-aliases { color: var(--text-muted); font-size: 0.78rem; align-self: center; }
.kb-concept-summary {
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--text-primary);
  margin: 1rem 0 1.5rem;
  padding-left: 1rem;
  border-left: 3px solid var(--accent-color);
}
.kb-body-heading {
  font-size: 1.05rem;
  margin: 1.4rem 0 0.5rem;
}
.kb-body { line-height: 1.6; color: var(--text-secondary); margin-bottom: 1.5rem; }
.kb-body p { margin: 0.7rem 0; }
.kb-body strong { color: var(--text-primary); }
.kb-body a { color: var(--accent-color); }
.kb-body ul { margin: 0.7rem 0 0.7rem 1.2rem; list-style: disc; }
.kb-page-sections { margin: 0.5rem 0 2rem; }
.kb-page-hook {
  color: var(--text-primary);
  font-size: 1.08rem;
  line-height: 1.65;
  margin: 1.5rem 0;
}
.kb-page-hook p { margin: 0; }
.kb-page-section { margin: 1.7rem 0; }
.kb-page-section > h2 { font-size: 1.12rem; font-weight: 650; margin-bottom: 0.55rem; }
.kb-page-section .kb-body { margin-bottom: 0; }
.kb-example-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 1.5rem;
}
.kb-example-item { padding: 0.75rem 0; border-top: 1px solid var(--border-color); }
.kb-example-item h3 { font-size: 0.92rem; font-weight: 650; margin-bottom: 0.25rem; }
.kb-page-action { border-left: 3px solid #74d7a5; padding-left: 1rem; }
.kb-citations { display: inline-flex; gap: 0.25rem; margin-left: 0.3rem; vertical-align: baseline; }
.kb-citations a, .kb-citations span {
  color: var(--accent-color);
  font-size: 0.66rem;
  font-weight: 700;
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
  padding: 0 0.2rem;
}
@media (max-width: 640px) {
  .kb-example-grid { grid-template-columns: 1fr; }
}

.kb-block {
  margin: 1.8rem 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border-color);
}
.kb-episode-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.kb-episode {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.8rem 1rem;
}
.kb-episode-title { font-weight: 600; color: var(--text-primary); }
.kb-episode-title:hover { color: var(--accent-color); }
.kb-episode-views { display: block; color: var(--text-muted); font-size: 0.8rem; margin-top: 0.2rem; }
.kb-tag.kb-start-here {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}
.kb-timestamp {
  margin-left: 0.4rem;
  font-size: 0.85rem;
  color: var(--accent-color);
  white-space: nowrap;
}
.kb-timestamp:hover { text-decoration: underline; }
.kb-evidence {
  margin-top: 0.6rem;
  padding-left: 0.8rem;
  border-left: 2px solid var(--border-hover);
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
  font-style: italic;
}

.kb-rel-line { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; color: var(--text-secondary); }
.kb-pill {
  display: inline-block;
  max-width: 100%;
  padding: 0.3rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--text-primary);
  overflow-wrap: anywhere;
  transition: border-color 0.2s, background 0.2s;
}
.kb-pill:hover { border-color: var(--accent-color); background: var(--bg-tertiary); }
.kb-concept-foot { display: flex; gap: 0.75rem; margin-top: 2rem; flex-wrap: wrap; }

/* Graph page */
.kb-graph-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 1rem 0;
  flex-wrap: wrap;
}
.kb-graph-density {
  display: inline-flex;
  padding: 3px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}
.kb-density-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}
.kb-density-btn.active {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}
.kb-density-btn:hover { color: var(--text-primary); }
.kb-graph-search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.kb-graph-search input {
  width: min(260px, 58vw);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.55rem 0.75rem;
  font: inherit;
}
.kb-graph-search input:focus {
  outline: none;
  border-color: var(--accent-color);
}
.kb-graph-browser {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 360px;
  gap: 1rem;
  align-items: stretch;
  margin: 1rem 0;
}
.kb-graph-list,
.kb-neighborhood,
.kb-graph-detail {
  background: #0b0d10;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}
.kb-graph-list {
  padding: 0.75rem;
  max-height: 42rem;
  overflow: auto;
}
.kb-graph-list h2 {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0.4rem 0 0.55rem;
}
.kb-group-list,
.kb-hub-list,
.kb-neighbor-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.kb-group-list { margin-bottom: 1rem; }
.kb-group-row,
.kb-hub-row,
.kb-neighbor-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  min-width: 0;
  padding: 0.55rem 0.6rem;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  text-align: left;
  font: inherit;
  cursor: pointer;
}
.kb-neighbor-row {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  text-decoration: none;
}
.kb-group-row:hover,
.kb-hub-row:hover,
.kb-neighbor-row:hover,
.kb-group-row.active,
.kb-hub-row.active {
  background: var(--bg-secondary);
  border-color: var(--border-hover);
}
.kb-hub-dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  flex: 0 0 auto;
}
.kb-hub-main,
.kb-group-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
}
.kb-hub-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.88rem;
  font-weight: 650;
}
.kb-hub-meta {
  color: var(--text-muted);
  font-size: 0.74rem;
}
.kb-neighborhood {
  padding: 0.75rem;
  min-width: 0;
}
.kb-neighborhood-map {
  width: 100%;
  height: min(68vh, 44rem);
  min-height: 34rem;
  background: radial-gradient(circle at 50% 48%, rgba(62,166,255,0.08), rgba(11,13,16,0) 62%);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.kb-map-tools {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.55rem;
  color: var(--text-muted);
  font-size: 0.78rem;
}
.kb-map-tool-btn {
  appearance: none;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: var(--radius-pill);
  padding: 0.3rem 0.7rem;
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
}
.kb-map-tool-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-hover);
}
.kb-global-overview {
  height: 12rem;
  margin-top: 0.65rem;
  background: #080a0d;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.kb-global-overview svg {
  display: block;
  width: 100%;
  height: 100%;
}
.kb-overview-dots .background {
  opacity: 0.20;
}
.kb-overview-dots .same {
  opacity: 0.42;
}
.kb-overview-dots .neighbor {
  opacity: 0.9;
  stroke: rgba(255,255,255,0.7);
  stroke-width: 5;
}
.kb-overview-dots .selected {
  opacity: 1;
  stroke: #ffffff;
  stroke-width: 8;
}
.kb-overview-labels text {
  fill: rgba(241,244,248,0.52);
  font-family: system-ui, -apple-system, Segoe UI, sans-serif;
  font-size: 72px;
  font-weight: 800;
  text-anchor: middle;
}
.kb-neighborhood-map svg {
  display: block;
  width: 100%;
  height: auto;
  min-height: 24rem;
}
.kb-neighborhood-map text {
  fill: var(--text-primary);
  font-family: system-ui, -apple-system, Segoe UI, sans-serif;
  font-size: 0.82rem;
  font-weight: 650;
}
.kb-map-lines path {
  fill: none;
  stroke: rgba(255,255,255,0.18);
  stroke-width: 1.4;
}
.kb-svg-neighbor { cursor: pointer; }
.kb-svg-neighbor:hover text { fill: var(--accent-color); }
.kb-svg-neighbor:hover circle { filter: brightness(1.15); }
.kb-map-root {
  fill: var(--bg-secondary);
  stroke: var(--border-hover);
  stroke-width: 1.5;
}
.kb-map-node-label,
.kb-map-center-label {
  font-size: 0.78rem;
  font-weight: 750;
}
.kb-map-node-meta,
.kb-map-center-meta {
  fill: rgba(241,244,248,0.72);
  font-size: 0.7rem;
  font-weight: 600;
}
.kb-neighbor-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 0.75rem;
}
.kb-graph-detail {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  min-height: 18rem;
  max-height: 44rem;
  overflow: auto;
}
.kb-detail-kicker {
  display: block;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}
.kb-graph-detail h2 {
  font-size: 1.15rem;
  line-height: 1.25;
  margin-bottom: 0.55rem;
}
.kb-graph-detail p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
  margin-bottom: 0.85rem;
}
.kb-detail-nearby {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 1rem;
}
.kb-detail-nearby strong {
  color: var(--text-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.kb-detail-nearby a {
  color: var(--text-primary);
  font-size: 0.88rem;
  line-height: 1.25;
}
.kb-detail-nearby a:hover { color: var(--accent-color); }
.kb-detail-content {
  margin: 0.9rem 0;
}
.kb-detail-body {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.55;
}
.kb-detail-body p {
  margin-bottom: 0.8rem;
}
.kb-detail-body ul {
  margin: 0 0 0.8rem;
  padding-left: 1.1rem;
}
.kb-detail-stub {
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
}
.kb-detail-section {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.9rem;
}
.kb-detail-section strong {
  color: var(--text-muted);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.kb-detail-section a,
.kb-detail-section button {
  border: 0;
  background: transparent;
  color: var(--text-primary);
  padding: 0;
  text-align: left;
  font: inherit;
  font-size: 0.86rem;
  line-height: 1.3;
  cursor: pointer;
}
.kb-detail-section a:hover,
.kb-detail-section button:hover {
  color: var(--accent-color);
}

@media (max-width: 1100px) {
  .kb-graph-browser { grid-template-columns: 280px minmax(0, 1fr); }
  .kb-graph-detail { grid-column: 1 / -1; min-height: auto; }
}

@media (max-width: 820px) {
  .kb-graph-browser { grid-template-columns: 1fr; }
  .kb-graph-list { max-height: 24rem; }
  .kb-graph-detail { min-height: auto; }
  .kb-neighborhood-map { min-height: 28rem; height: 31rem; }
  .kb-map-tools { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 560px) {
  .kb-graph-controls { align-items: stretch; }
  .kb-graph-density { width: 100%; }
  .kb-density-btn { flex: 1; padding-inline: 0.35rem; }
  .kb-graph-search {
    width: 100%;
    justify-content: space-between;
  }
  .kb-graph-search input { width: min(100%, 18rem); }
}
/* Authentication and access-tier UI */
.description-copy { white-space: pre-line; }

.access-banner {
  margin-bottom: 1.25rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-md);
  background: rgba(62, 166, 255, 0.08);
  color: var(--text-secondary);
}

.access-banner a { color: var(--accent-color); text-decoration: underline; }
.access-banner.success { border-color: rgba(68, 190, 120, 0.4); color: #9ee2b9; }

.locked-content {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 1rem;
  min-height: 20rem;
  padding: 2rem;
  text-align: center;
  color: var(--text-secondary);
}

.locked-content h3 { color: var(--text-primary); font-size: 1.25rem; }

.account-panel {
  width: min(44rem, 100%);
  margin: 2rem auto;
  padding: clamp(1.25rem, 4vw, 2.5rem);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
}

.account-panel > * + * { margin-top: 1.25rem; }
.account-panel a:not(.kb-btn) { color: var(--accent-color); text-decoration: underline; }

.identity-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
}

.identity-card img { width: 4rem; height: 4rem; border-radius: 50%; }
.identity-card p { color: var(--text-secondary); }

.access-pill {
  display: inline-block;
  margin-top: 0.4rem;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-pill);
  background: rgba(62, 166, 255, 0.15);
  color: var(--accent-color);
  font-size: 0.8rem;
  font-weight: 700;
}

.account-facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.6rem 1.25rem;
}

.account-facts dt { color: var(--text-muted); }
.account-facts dd { margin: 0; overflow-wrap: anywhere; }

.account-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 0.75rem; }
.account-actions form { margin: 0; }
.account-actions button { font: inherit; cursor: pointer; }

.status-icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: rgba(255, 78, 69, 0.15);
  color: var(--accent-danger);
  font-size: 1.5rem;
  font-weight: 700;
}

.denied-panel ol { color: var(--text-secondary); }
.error-code { color: var(--accent-color); font: 700 2rem var(--font-mono); }

@media (max-width: 760px) {
  .account-link span { display: none; }
  .account-link { padding-inline: 0.45rem; }
  .account-facts { grid-template-columns: 1fr; }
  .account-facts dd { margin-bottom: 0.5rem; }
}