/* ╔══════════════════════════════════════════════════════════════╗
   ║  Cloud Constellation — dipayanbarua.com.au                  ║
   ║  Neon Sci-Fi · Deep-Space Glassmorphic · Phantom Blue       ║
   ║  Signature Accent: #7DABFF                                  ║
   ║  12 Domains · 70 Clusters · Three-Tier Navigation           ║
   ║  Session 3 — brightness/contrast pass                       ║
   ╚══════════════════════════════════════════════════════════════╝ */

/* ─── ROOT TOKENS ─────────────────────────────────────────────── */
:root {
  /* Signature accent */
  --accent: #7DABFF;
  --accent-rgb: 125, 171, 255;
  --accent-dim: rgba(125, 171, 255, 0.22);
  --accent-glow: rgba(125, 171, 255, 0.35);
  --accent-subtle: rgba(125, 171, 255, 0.11);
  --accent-border: rgba(125, 171, 255, 0.30);
  /* Text-glow helpers (used sparingly on accent labels/numbers + headings) */
  --accent-text-glow: 0 0 18px rgba(125, 171, 255, 0.45);
  --heading-shadow: 0 1px 14px rgba(0, 0, 0, 0.45);

  /* Surfaces */
  --bg-deep: #060810;
  --bg-space: #0A0E18;
  --bg-panel: rgba(12, 16, 28, 0.92);
  --bg-glass: rgba(16, 22, 40, 0.74);
  --bg-glass-hover: rgba(20, 28, 52, 0.84);
  --bg-card: rgba(14, 20, 36, 0.80);
  --bg-card-hover: rgba(18, 26, 48, 0.88);
  --bg-elevated: rgba(20, 28, 48, 0.95);
  --bg-input: rgba(10, 14, 26, 0.70);

  /* Text */
  --text-bright: #F0F3F9;
  --text-primary: #D5DCE8;
  --text-secondary: #A3AEC2;
  --text-muted: #727E94;
  --text-dim: #515C74;

  /* Borders */
  --border: rgba(125, 171, 255, 0.16);
  --border-hover: rgba(125, 171, 255, 0.30);
  --border-active: rgba(125, 171, 255, 0.48);
  --border-subtle: rgba(255, 255, 255, 0.08);

  /* Glassmorphism */
  --glass-blur: blur(24px);
  --glass-blur-heavy: blur(40px);
  --glass-border: 1px solid var(--border);
  --glass-border-hover: 1px solid var(--border-hover);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 60px rgba(125, 171, 255, 0.06);
  --glass-shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.5), 0 0 80px rgba(125, 171, 255, 0.11);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Content widths */
  --content-max: 1320px;
  --reading-max: 780px;
  --sidebar-width: 240px;
  --outline-width: 200px;

  /* Stack layer colours (Neon Palette B — 3D stack only) */
  --stack-0: #A0AEC0;  /* The Stack Floor */
  --stack-1: #FF6B00;  /* Compute */
  --stack-2: #00FFD1;  /* Storage & Data */
  --stack-3: #00E5FF;  /* Networking */
  --stack-4: #4D7DFF;  /* Identity & Security */
  --stack-5: #00FF88;  /* Operations */
  --stack-6: #BF5AF2;  /* IaC & DevOps */
  --stack-7: #FF3B3B;  /* Resilience */
  --stack-8: #FF2D78;  /* Hybrid & Workplace */
  --stack-9: #FFD60A;  /* AI & IoT */

  /* Content accent colours (softer versions for in-page use) */
  --content-info: #7DABFF;
  --content-success: #5EEAD4;
  --content-warning: #FBBF24;
  --content-danger: #F87171;
  --content-tip: #A78BFA;
  --content-note: #94A3B8;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;

  /* Spacing scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(125, 171, 255, 0.03) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(100, 140, 220, 0.02) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 20% 60%, rgba(80, 120, 200, 0.015) 0%, transparent 40%);
  min-height: 100vh;
  overflow-x: hidden;
}

::selection {
  background: rgba(125, 171, 255, 0.3);
  color: var(--text-bright);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}
a:hover { opacity: 0.85; }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

img { max-width: 100%; display: block; }

/* ─── TYPOGRAPHY ──────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text-bright);
  line-height: 1.3;
  font-weight: 600;
  text-shadow: var(--heading-shadow);
}

h1 { font-size: 2.25rem; letter-spacing: -0.02em; }
h2 { font-size: 1.625rem; letter-spacing: -0.015em; margin-top: var(--space-3xl); margin-bottom: var(--space-lg); }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; margin-top: var(--space-2xl); margin-bottom: var(--space-md); }
h4 { font-size: 1.1rem; margin-top: var(--space-xl); margin-bottom: var(--space-md); }
h5 { font-size: 1rem; margin-top: var(--space-lg); margin-bottom: var(--space-sm); }

p { margin-bottom: var(--space-md); }
p:last-child { margin-bottom: 0; }

.eyebrow {
  font-size: 0.6875rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-sm);
  text-shadow: var(--accent-text-glow);
  text-align: center;
}

.lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ─── NAVIGATION ──────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-panel);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--glass-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
  background: rgba(8, 12, 22, 0.95);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4), 0 0 40px rgba(125, 171, 255, 0.02);
}

.nav-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 60px;
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-bright);
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.nav-logo .monogram {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), rgba(125, 171, 255, 0.6));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  color: #0A0E18;
  letter-spacing: 0.5px;
  box-shadow: 0 0 16px rgba(125, 171, 255, 0.35);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-link {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.nav-link:hover {
  color: var(--text-bright);
  background: var(--accent-subtle);
  opacity: 1;
}
.nav-link.active {
  color: var(--accent);
  background: var(--accent-subtle);
  font-weight: 500;
}

.nav-search {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--bg-input);
  border: var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  flex-shrink: 0;
}
.nav-search:hover {
  border-color: var(--border-hover);
  background: var(--bg-glass);
}
.nav-search-text {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.nav-search-kbd {
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.04);
  padding: 1px 6px;
  border-radius: 4px;
  border: 0.5px solid var(--border-subtle);
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: var(--space-sm);
  cursor: pointer;
  font-size: 1.25rem;
}

/* ─── BREADCRUMBS ─────────────────────────────────────────────── */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--text-muted);
  padding: var(--space-md) 0;
}

.breadcrumbs a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.breadcrumbs a:hover { color: var(--accent); }

.breadcrumbs .separator {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.breadcrumbs .current {
  color: var(--text-primary);
  font-weight: 500;
}

/* ─── COMMAND PALETTE ─────────────────────────────────────────── */
.cmd-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(4, 6, 14, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
}
.cmd-overlay.open { display: flex; }

.cmd-palette {
  width: 100%;
  max-width: 580px;
  background: var(--bg-elevated);
  border: 0.5px solid var(--border-hover);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6), 0 0 120px rgba(125, 171, 255, 0.04);
  overflow: hidden;
}

.cmd-input-wrap {
  display: flex;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 0.5px solid var(--border);
  gap: var(--space-sm);
}

.cmd-icon {
  color: var(--accent);
  font-size: 1.125rem;
  flex-shrink: 0;
}

.cmd-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-bright);
  font-size: 1rem;
  font-family: var(--font-body);
}
.cmd-input::placeholder { color: var(--text-dim); }

.cmd-results {
  max-height: 360px;
  overflow-y: auto;
  padding: var(--space-sm) 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.cmd-result {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 10px var(--space-lg);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.cmd-result:hover, .cmd-result.selected {
  background: var(--accent-subtle);
}

.cmd-result-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  color: var(--accent);
  flex-shrink: 0;
}

.cmd-result-text {
  flex: 1;
  min-width: 0;
}
.cmd-result-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-bright);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cmd-result-path {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cmd-footer {
  padding: var(--space-sm) var(--space-lg);
  border-top: 0.5px solid var(--border);
  display: flex;
  gap: var(--space-lg);
  font-size: 0.6875rem;
  color: var(--text-dim);
}
.cmd-footer kbd {
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.04);
  padding: 1px 5px;
  border-radius: 3px;
  border: 0.5px solid var(--border-subtle);
  margin-right: 4px;
}

.cmd-empty {
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.875rem;
}

/* ─── GATEWAY (HOMEPAGE HERO) ─────────────────────────────────── */
.gateway {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.gateway-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.gateway-canvas canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.gateway-content {
  position: relative;
  z-index: 2;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 100px var(--space-lg) var(--space-3xl);
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
  width: 100%;
}

.gateway-text {
  flex: 1;
  max-width: 520px;
}

.gateway-text h1 {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

.gateway-text h1 .highlight {
  background: linear-gradient(135deg, var(--accent), rgba(125, 171, 255, 0.6));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gateway-text .subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.gateway-profile {
  flex-shrink: 0;
  width: 300px;
}

/* ─── PROFILE CARD (GLASSMORPHIC) ─────────────────────────────── */
.profile-card {
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 0.5px solid var(--accent-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
}

.profile-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 60%;
  height: 120%;
  background: radial-gradient(circle, rgba(125, 171, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.profile-card .avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), rgba(125, 171, 255, 0.4));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bg-deep);
  margin-bottom: var(--space-md);
}

.profile-card .name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: var(--space-xs);
}

.profile-card .role {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.profile-card .stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.profile-card .stat {
  text-align: center;
  padding: var(--space-sm);
  background: var(--accent-subtle);
  border-radius: var(--radius-sm);
}

.profile-card .stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: var(--accent-text-glow);
}

.profile-card .stat-label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ─── SECTION CONTAINERS ──────────────────────────────────────── */
.section {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-4xl) var(--space-lg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-top: 0;
}

/* ─── DOMAIN CARDS ────────────────────────────────────────────── */
.domain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.domain-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  text-decoration: none;
  display: block;
  color: inherit;
}

.domain-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--glass-shadow-hover);
  opacity: 1;
}

.domain-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--card-accent, var(--accent));
  opacity: 0;
  transition: opacity var(--transition-base);
}
.domain-card:hover::after { opacity: 1; }

.domain-card .card-number {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--card-accent, var(--accent));
  letter-spacing: 1px;
  margin-bottom: var(--space-sm);
  font-family: var(--font-mono);
  text-shadow: 0 0 14px color-mix(in srgb, var(--card-accent, var(--accent)) 45%, transparent);
}

.domain-card .card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.domain-card .card-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.domain-card .card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.domain-card .card-badge {
  font-size: 0.6875rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-weight: 500;
}

/* ─── CLUSTER CARDS (INSIDE DOMAIN PAGES) ─────────────────────── */
.cluster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}

.cluster-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: transform var(--transition-base), border-color var(--transition-base), background var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  display: block;
  color: inherit;
}

.cluster-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  opacity: 1;
}

.cluster-card .cluster-id {
  display: block;
  font-size: 0.625rem;
  font-family: var(--font-mono);
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: var(--space-xs);
}

.cluster-card .cluster-title {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: var(--space-sm);
}

.cluster-card .cluster-topics {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Temporary glow applied to the exact career card a search result
   or shared link lands on — fades out after a couple seconds. */
.cluster-card.role-highlight {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 0 32px rgba(125, 171, 255, 0.35);
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

/* ─── THREE-COLUMN READING LAYOUT ─────────────────────────────── */
.reading-layout {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 80px var(--space-lg) var(--space-4xl);
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--outline-width);
  gap: var(--space-2xl);
  align-items: start;
}

/* Left sidebar */
.sidebar {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  padding-right: var(--space-md);
}

.sidebar-section {
  margin-bottom: var(--space-xl);
}

.sidebar-title {
  font-size: 0.6875rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 0.5px solid var(--border);
}

.sidebar-link {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  margin-bottom: 1px;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  line-height: 1.5;
}
.sidebar-link:hover {
  color: var(--text-bright);
  background: var(--accent-subtle);
  opacity: 1;
}
.sidebar-link.active {
  color: var(--accent);
  background: var(--accent-subtle);
  border-left-color: var(--accent);
  font-weight: 500;
}

.sidebar-link.coming-soon {
  color: var(--text-dim);
  font-style: italic;
}

/* Centre content */
.content {
  max-width: var(--reading-max);
  min-width: 0;
}

/* Right outline */
.outline {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  padding-left: var(--space-md);
  border-left: 0.5px solid var(--border);
}

.outline-title {
  font-size: 0.6875rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.outline-link {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 4px 0;
  transition: color var(--transition-fast);
  line-height: 1.5;
}
.outline-link:hover { color: var(--text-primary); opacity: 1; }
.outline-link.active { color: var(--accent); font-weight: 500; }

/* ─── CONTENT ELEMENTS ────────────────────────────────────────── */
/* Callout boxes */
.callout {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  border-left: 3px solid;
  margin: var(--space-lg) 0;
  font-size: 0.875rem;
  line-height: 1.7;
}

.callout.info {
  background: rgba(125, 171, 255, 0.10);
  border-color: var(--content-info);
  color: var(--content-info);
}

.callout.tip {
  background: rgba(167, 139, 250, 0.10);
  border-color: var(--content-tip);
  color: var(--content-tip);
}

.callout.warning {
  background: rgba(251, 191, 36, 0.10);
  border-color: var(--content-warning);
  color: var(--content-warning);
}

.callout.danger {
  background: rgba(248, 113, 113, 0.10);
  border-color: var(--content-danger);
  color: var(--content-danger);
}

.callout.note {
  background: rgba(148, 163, 184, 0.10);
  border-color: var(--content-note);
  color: var(--content-note);
}

.callout-title {
  font-weight: 600;
  font-size: 0.8125rem;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Code blocks */
pre {
  background: rgba(6, 8, 16, 0.8);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  margin: var(--space-lg) 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

code {
  font-family: var(--font-mono);
  font-size: 0.8125em;
}

p code, li code {
  background: var(--accent-subtle);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8125em;
}

pre code {
  background: none;
  color: var(--text-primary);
  padding: 0;
  border-radius: 0;
}

/* Code block header (language label) */
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  background: rgba(125, 171, 255, 0.04);
  border-bottom: 0.5px solid var(--border);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.code-header + pre {
  margin-top: 0;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* Syntax colouring classes */
.kw { color: var(--content-tip); }    /* keywords */
.fn { color: var(--accent); }          /* functions */
.str { color: var(--content-success); } /* strings */
.cm { color: var(--text-dim); }         /* comments */
.num { color: var(--content-warning); } /* numbers */
.var { color: var(--text-bright); }     /* variables */
.op { color: var(--text-secondary); }   /* operators */

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: 0.875rem;
}

thead {
  border-bottom: 1px solid var(--border-hover);
}

th {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  font-weight: 600;
  color: var(--text-bright);
  font-size: 0.8125rem;
  letter-spacing: 0.3px;
}

td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 0.5px solid var(--border);
  color: var(--text-secondary);
}

tr:hover td {
  background: var(--accent-subtle);
}

/* Lists */
ul, ol {
  padding-left: var(--space-lg);
  margin: var(--space-md) 0;
}

li {
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
}

li::marker {
  color: var(--accent);
}

/* Horizontal rule */
hr {
  border: none;
  border-top: 0.5px solid var(--border);
  margin: var(--space-2xl) 0;
}

/* ─── COMING SOON STATE ───────────────────────────────────────── */
.coming-soon-wrap {
  text-align: center;
  padding: var(--space-4xl) var(--space-lg);
}

.coming-soon-icon {
  font-size: 3rem;
  color: var(--text-dim);
  margin-bottom: var(--space-lg);
}

.coming-soon-wrap h2 {
  color: var(--text-secondary);
  margin-top: 0;
  margin-bottom: var(--space-md);
}

.coming-soon-wrap p {
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto var(--space-xl);
}

.topic-preview {
  max-width: 480px;
  margin: 0 auto;
  text-align: left;
}

.topic-preview-title {
  font-size: 0.6875rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.topic-preview-list {
  list-style: none;
  padding: 0;
}

.topic-preview-list li {
  padding: var(--space-sm) var(--space-md);
  border-left: 2px solid var(--border);
  margin-bottom: var(--space-xs);
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.topic-preview-list li:hover {
  border-left-color: var(--accent);
  color: var(--text-primary);
}

/* ─── TAGS & BADGES ───────────────────────────────────────────── */
.tag {
  display: inline-block;
  font-size: 0.6875rem;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  background: var(--accent-subtle);
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.3px;
}

.tag.cert {
  background: rgba(167, 139, 250, 0.08);
  color: var(--content-tip);
}

.tag.new {
  background: rgba(94, 234, 212, 0.08);
  color: var(--content-success);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-md) 0;
}

/* ─── BUTTONS ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-base), background var(--transition-fast);
  font-family: var(--font-body);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-deep);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(125, 171, 255, 0.3);
  opacity: 1;
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 0.5px solid var(--accent-border);
}
.btn-ghost:hover {
  background: var(--accent-subtle);
  border-color: var(--border-hover);
  opacity: 1;
}

/* ─── FOOTER ──────────────────────────────────────────────────── */
.footer {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
  border-top: 0.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--accent); }

/* ─── CURSOR GLOW ─────────────────────────────────────────────── */
.cursor-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(125, 171, 255, 0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
}

/* ─── SCROLL REVEAL ───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── STEP-BY-STEP HOW-TO ─────────────────────────────────────── */
.how-to {
  margin: var(--space-xl) 0;
}

.step {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.step:hover { background: var(--accent-subtle); }

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-subtle);
  border: 0.5px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-title {
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: var(--space-xs);
}

.step-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.step-path {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-subtle);
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-top: var(--space-xs);
}

/* ─── DOMAIN LANDING HERO ─────────────────────────────────────── */
.domain-hero {
  padding: 100px var(--space-lg) var(--space-3xl);
  max-width: var(--content-max);
  margin: 0 auto;
  text-align: center;
}

.domain-hero .domain-number {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: var(--space-sm);
}

.domain-hero h1 {
  margin-bottom: var(--space-md);
}

.domain-hero .domain-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  line-height: 1.7;
}

.domain-hero .domain-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.domain-hero .domain-stats strong {
  color: var(--accent);
  font-weight: 600;
}

/* ─── CONTACT SECTION ─────────────────────────────────────────── */
.contact-card {
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}
.contact-link:hover { color: var(--accent); }

/* ─── CAREER ORBIT DIAGRAM (role pages) ───────────────────────── */
.career-orbit-wrap {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-2xl);
}

.career-orbit-canvas {
  position: relative;
  height: 420px;
  border-radius: var(--radius-lg);
  border: var(--glass-border);
  background: radial-gradient(ellipse 70% 60% at 50% 40%, rgba(125,171,255,0.05) 0%, transparent 70%), var(--bg-glass);
  overflow: hidden;
}
.career-orbit-canvas canvas { width: 100% !important; height: 100% !important; display: block; cursor: grab; }

.career-orbit-hint {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: var(--space-sm);
  letter-spacing: 0.3px;
}

@media (max-width: 768px) {
  .career-orbit-canvas { height: 320px; }
}

/* ─── MOBILE POLISH — touch targets, safe areas, tap response ─── */
/* touch-action: manipulation removes the ~300ms tap delay and blocks
   double-tap-to-zoom on things meant to be tapped once, everywhere —
   desktop pointer behaviour is unaffected. */
a, button, .role-pill, .cluster-card, .domain-card, .nav-search,
.hero-search, .cmd-result, .step, .nav-mobile-toggle {
  touch-action: manipulation;
}

/* Safe-area padding for notches / home indicators (iPhone, some Android) */
.nav-inner {
  padding-left: max(var(--space-lg), env(safe-area-inset-left));
  padding-right: max(var(--space-lg), env(safe-area-inset-right));
}
.footer {
  padding-left: max(var(--space-lg), env(safe-area-inset-left));
  padding-right: max(var(--space-lg), env(safe-area-inset-right));
  padding-bottom: max(var(--space-3xl), env(safe-area-inset-bottom));
}

@media (max-width: 768px) {
  /* Real 44px minimum touch targets (Apple/Google HIG baseline) */
  .nav-mobile-toggle { min-width: 44px; min-height: 44px; }
  .nav-link { min-height: 40px; display: flex; align-items: center; }
  .role-pill { padding: 10px 16px; min-height: 40px; display: inline-flex; align-items: center; }
  .cmd-result { padding: 12px var(--space-lg); min-height: 44px; }
  .btn { min-height: 44px; }
  .cmd-result-icon { width: 36px; height: 36px; }

  /* Command palette: full-bleed and thumb-reachable on small screens */
  .cmd-overlay { padding-top: 8vh; padding-left: 12px; padding-right: 12px; }
  .cmd-palette { max-width: 100%; }
  .cmd-results { max-height: 50vh; }

  /* Prevent any stray element from creating horizontal scroll on narrow viewports */
  body { overflow-x: hidden; }
}

@media (max-width: 480px) {
  .hero-search-kbd { display: none; }  /* ⌘K is meaningless on a phone keyboard */
  .career-orbit-hint { padding: 0 var(--space-md); }
}

/* ─── PERSISTENT PARTICLE BACKGROUND (sitewide) ──────────────── */
/* z-index: -1, not 0 — a positioned z:0 element actually paints ON
   TOP of ordinary static content per CSS stacking rules. Negative
   z-index is what reliably stays behind everything, on every page,
   with no per-section position/z-index hacks needed anywhere else. */
.particles-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

/* ─── CLUSTER PAGE — "coming soon" placeholder pattern ────────── */
.cluster-meta-line {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--space-xl);
}

.cluster-divider {
  text-align: center;
  color: var(--accent);
  font-size: 1.5rem;
  margin: var(--space-xl) 0;
  text-shadow: var(--accent-text-glow);
}

.coming-soon {
  max-width: var(--reading-max);
  margin: 0 auto;
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.coming-soon h2 {
  margin-top: 0;
}

.coming-soon-desc {
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto var(--space-xl);
  line-height: 1.7;
}

.topics-heading {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.topics-list {
  list-style: none;
  padding: 0;
  margin: 0 auto var(--space-2xl);
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.topics-list li {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  text-align: left;
}

.cluster-back-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  font-size: 0.875rem;
}

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

/* ─── PILLAR CARDS (concept-breakdown pattern, e.g. orientation pages) ── */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}
@media (max-width: 640px) {
  .pillar-grid { grid-template-columns: 1fr; }
}

.pillar-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-left: 3px solid var(--pillar-accent, var(--accent));
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  scroll-margin-top: 100px;
}

.pillar-card h3 {
  color: var(--pillar-accent, var(--accent));
  font-size: 1.0625rem;
  margin: 0 0 var(--space-xs);
}

.pillar-card .pillar-analogy {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: var(--space-sm);
}

.pillar-card p:last-child { margin-bottom: 0; }

/* Real-world scenario panel */
.scenario-panel {
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin: var(--space-xl) 0;
}

.scenario-panel .scenario-label {
  font-size: 0.6875rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

/* ─── ABOUT PAGE ──────────────────────────────────────────────── */
.about-content {
  max-width: 680px;
  margin: 0 auto;
  padding: 100px var(--space-lg) var(--space-4xl);
}

.about-content h1 {
  margin-bottom: var(--space-xl);
}

/* ─── RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .reading-layout {
    grid-template-columns: 1fr;
    padding-top: 80px;
  }

  .sidebar, .outline {
    position: static;
    max-height: none;
    border-left: none;
    padding-left: 0;
    padding-right: 0;
  }

  .sidebar {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    padding-bottom: var(--space-md);
    border-bottom: 0.5px solid var(--border);
    margin-bottom: var(--space-lg);
  }

  .sidebar-section { margin-bottom: 0; }
  .sidebar-title { display: none; }
  .sidebar-link { margin-bottom: 0; border-left: none; }

  .outline { display: none; }

  .gateway-content {
    flex-direction: column;
    text-align: center;
    padding-top: 80px;
  }

  .gateway-text { max-width: 100%; }
  .gateway-profile { width: 100%; max-width: 320px; }
}

@media (max-width: 768px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.375rem; }
  h3 { font-size: 1.125rem; }

  .gateway-text h1 { font-size: 2rem; }

  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: var(--glass-border);
    padding: var(--space-md) var(--space-lg);
    gap: var(--space-xs);
  }

  .domain-grid { grid-template-columns: 1fr; }
  .cluster-grid { grid-template-columns: 1fr; }

  .section { padding: var(--space-2xl) var(--space-md); }

  .footer {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .nav-search { display: none; }
  .profile-card .stats { grid-template-columns: 1fr; }
}

/* ─── REDUCED MOTION ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .cursor-glow { display: none; }
}

/* ─── PRINT ───────────────────────────────────────────────────── */
@media print {
  body { background: #fff; color: #000; }
  .nav, .cursor-glow, .gateway-canvas, .sidebar, .outline, .footer { display: none; }
  .reading-layout { grid-template-columns: 1fr; }
  .content { max-width: 100%; }
  a { color: #000; text-decoration: underline; }
  pre { border: 1px solid #ccc; }
}