/* ============================================
   Tyler Wince — FIELD EXPEDITION Theme
   Topographic cartography meets explorer's
   field journal: aged paper, dot grids,
   contour lines, forest ink, rust accents.
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,600&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,500;0,8..60,600;1,8..60,400&family=JetBrains+Mono:ital,wght@0,400;0,500;0,700;1,400&display=swap');

:root {
  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Source Serif 4', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --font-sans: 'Helvetica Neue', Arial, sans-serif;
  --font-system: var(--font-sans);
  --font-hand: var(--font-display);

  /* Field Expedition Palette */
  --color-paper: #F3EFE6;
  --color-paper-warm: #EDE8DC;
  --color-paper-dark: #E5DFD1;
  --color-white: #FAF8F3;
  --color-ink: #1A3329;
  --color-ink-mid: #2C4A3A;
  --color-ink-soft: #3D5A4A;
  --color-muted: #7A8E80;
  --color-ghost: #A8B5AB;
  --color-rust: #C84B31;
  --color-rust-light: #E06B4F;
  --color-rust-pale: #F5DDD6;
  --color-forest: #2D6A4F;
  --color-forest-light: #40916C;
  --color-brown: #6B5B4D;
  --color-grid: #DDD7CA;
  --color-border: #CEC6B5;
  --color-border-light: #E0D9CC;
  --color-water: #4A7C93;
  --color-green: #2D6A4F;
  --color-red: #B83A2A;
  --color-gold: var(--color-rust);
  --color-gold-light: var(--color-rust-light);
  --color-gold-pale: var(--color-rust-pale);

  /* Cross-theme compatibility aliases */
  --color-bg: var(--color-paper);
  --color-surface: var(--color-white);
  --color-surface-dark: var(--color-paper-warm);
  --color-surface-mid: var(--color-paper-dark);
  --color-surface-elevated: var(--color-white);
  --color-cream: var(--color-paper);
  --color-parchment: var(--color-paper-warm);
  --color-vellum: var(--color-paper-dark);
  --color-accent: var(--color-rust);
  --color-accent-light: var(--color-rust-light);
  --color-accent-wash: var(--color-rust-pale);
  --color-text-primary: var(--color-ink);
  --color-text-secondary: var(--color-ink-soft);
  --color-text-tertiary: var(--color-muted);

  /* Color compat aliases */
  --color-cyan: var(--color-rust);
  --color-cyan-dim: var(--color-rust-pale);
  --color-amber: var(--color-rust);
  --color-sand: var(--color-rust);
  --color-seal: var(--color-rust);
  --color-ribbon: var(--color-rust);
  --color-magenta: var(--color-red);
  --color-rose: var(--color-red);
  --color-rose-dim: rgba(184, 58, 42, 0.08);
  --color-rose-glow: rgba(184, 58, 42, 0.04);
  --color-pink: var(--color-red);
  --color-pink-light: var(--color-rust-pale);
  --color-wine: var(--color-red);
  --color-purple: var(--color-ink-soft);
  --color-purple-dim: rgba(61, 90, 74, 0.08);
  --color-navy: var(--color-ink);
  --color-navy-light: var(--color-ink-mid);
  --color-blush: var(--color-paper);
  --color-lace: rgba(200, 75, 49, 0.04);
  --color-abyss: var(--color-ink);
  --color-deep: var(--color-ink-mid);
  --color-red-soft: var(--color-red);
  --color-red-dark: var(--color-red);
  --color-red-dim: rgba(184, 58, 42, 0.08);
  --color-green-light: var(--color-forest-light);
  --color-green-dim: rgba(45, 106, 79, 0.1);
  --color-green-wash: rgba(45, 106, 79, 0.05);
  --color-gold-dim: var(--color-rust-pale);
  --color-titlebar: var(--color-paper-warm);
  --line-red: var(--color-red);
  --line-blue: var(--color-water);
  --line-green: var(--color-green);
  --line-gold: var(--color-rust);

  /* Sidebar compat aliases (mapped to expedition palette) */
  --color-sidebar-bg: var(--color-ink);
  --color-sidebar-border: var(--color-ink-mid);
  --color-sidebar-surface: var(--color-ink-mid);
  --color-sidebar-text: var(--color-ghost);
  --color-sidebar-muted: var(--color-muted);
  --color-sidebar-accent: var(--color-rust);
  --color-sidebar-active-bg: rgba(200, 75, 49, 0.08);

  /* Paper & panel compat */
  --color-paper-shadow: rgba(26, 51, 41, 0.10);
  --color-surface-glass: rgba(243, 239, 230, 0.95);
  --color-surface-glow: rgba(200, 75, 49, 0.05);
  --color-panel: var(--color-white);
  --color-panel-hover: var(--color-paper);
  --color-panel-border: var(--color-border);
  --color-panel-border-bright: var(--color-rust);
  --color-rule-light: var(--color-border-light);

  /* Layout */
  --nav-height: 64px;
  --max-width-text: 660px;
  --max-width-content: 960px;
  --max-width-wide: 1100px;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 48px;
  --space-12: 64px;
  --space-16: 80px;
  --space-20: 96px;

  /* Rounded expedition feel */
  --border-radius: 6px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --border-radius-full: 999px;

  /* Shadows — subtle warm */
  --shadow-sm: 0 1px 4px rgba(26, 51, 41, 0.06);
  --shadow-md: 0 3px 12px rgba(26, 51, 41, 0.09);
  --shadow-lg: 0 8px 32px rgba(26, 51, 41, 0.11);
  --shadow-glow-cyan: 0 2px 8px rgba(200, 75, 49, 0.12);
  --shadow-glow-magenta: 0 2px 8px rgba(184, 58, 42, 0.10);
  --shadow-glow-amber: 0 2px 8px rgba(200, 75, 49, 0.12);
  --shadow-letter: 0 4px 20px rgba(26, 51, 41, 0.10);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 150ms ease;
  --transition-base: 280ms ease;
}

/* ---- Reset ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background-color: var(--color-paper);
  background-image: radial-gradient(circle, var(--color-grid) 1px, transparent 1px);
  background-size: 28px 28px;
  line-height: 1.65;
  overflow-x: hidden;
}

::selection {
  background: var(--color-rust-pale);
  color: var(--color-ink);
}

a {
  color: var(--color-rust);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-rust-light);
}

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

strong {
  color: var(--color-ink);
  font-weight: 600;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  line-height: 1.1;
  font-family: var(--font-display);
  color: var(--color-ink);
  font-weight: 600;
}

p {
  margin: 0 0 1em;
  color: var(--color-ink-soft);
}

ul, ol {
  margin: 0 0 1.2em 1.2em;
  color: var(--color-ink-soft);
}

li {
  margin-bottom: 0.35em;
}

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

code {
  font-family: var(--font-mono);
  font-size: 0.87em;
  background: var(--color-paper-warm);
  border: 1px solid var(--color-border);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--color-ink-mid);
}

pre {
  position: relative;
  margin: 1.5rem 0;
  padding: 20px;
  overflow-x: auto;
  background: var(--color-paper-warm);
  color: var(--color-ink);
  font-size: 0.87rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  border-left: 3px solid var(--color-rust);
}

pre code {
  border: none;
  background: transparent;
  padding: 0;
  color: inherit;
}

blockquote {
  margin: 1.5rem 0;
  padding: 20px 24px;
  background: var(--color-paper-warm);
  border-left: 3px solid var(--color-rust);
  border-radius: var(--border-radius);
  position: relative;
}

blockquote::before {
  content: none;
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* ---- Utilities ---- */
.mb-3 { margin-bottom: var(--space-3); }
.mb-6 { margin-bottom: var(--space-6); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-rust);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

/* ============================================
   SITE SHELL — Simple vertical block
   ============================================ */

.site-shell {
  display: block;
  min-height: 100vh;
}

/* ============================================
   EXPEDITION NAV — Fixed Bottom Bar
   ============================================ */

.expedition-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-ink);
  z-index: 1000;
  border-top: 2px solid var(--color-forest);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 300ms var(--ease-out);
}

.expedition-nav.nav-hidden {
  transform: translateY(100%);
}

.nav-inner {
  max-width: var(--max-width-wide);
  width: 100%;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-brand {
  margin-right: auto;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav-brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--color-forest);
  color: var(--color-rust);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  transition: all 150ms ease;
  text-decoration: none;
}

.nav-brand-mark:hover {
  border-color: var(--color-rust);
  background: rgba(200, 75, 49, 0.1);
}

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-waypoint {
  margin: 0;
}

.nav-waypoint a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 18px;
  text-decoration: none;
  color: var(--color-ghost);
  transition: color 150ms ease;
}

.waypoint-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  transition: all 150ms ease;
}

.waypoint-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.nav-waypoint a:hover {
  color: var(--color-paper-warm);
}

.nav-waypoint a:hover .waypoint-dot {
  transform: scale(1.5);
}

.nav-waypoint a.active {
  color: var(--color-rust);
}

.nav-waypoint a.active .waypoint-dot {
  background: var(--color-rust);
  box-shadow: 0 0 8px rgba(200, 75, 49, 0.4);
}

/* Legacy / compat nav classes */
.site-header { /* expedition-nav takes this role */ }
.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav li { margin: 0; }
.nav-toggle { display: none; }

/* ---- Main Content Area ---- */
.main-content-area {
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding-bottom: calc(var(--nav-height) + 16px);
}

.main-inner {
  flex: 1;
  padding: 32px clamp(20px, 4vw, 56px) 0;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  width: 100%;
}

/* ---- AI Design Banner ---- */
.ai-design-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 12px;
  margin-bottom: 32px;
  background: var(--color-paper-warm);
  border-left: 3px solid var(--color-rust);
  border-radius: var(--border-radius);
}

.ai-design-banner span {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.ai-design-banner a {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--color-rust);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.ai-design-banner a:hover {
  color: var(--color-rust-light);
}

/* ---- Footer ---- */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px clamp(20px, 4vw, 56px);
  border-top: 1px solid var(--color-border);
  margin-top: 64px;
  max-width: var(--max-width-wide);
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}

.footer-tagline {
  font-family: var(--font-display);
  font-size: 13px;
  font-style: italic;
  color: var(--color-muted);
  margin: 0;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-links li {
  margin: 0;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-copy {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---- Content Wrappers ---- */
.content-wrapper,
.content-wrapper-narrow {
  width: 100%;
  margin: 0 auto;
  padding: var(--space-10) 0;
}

.content-wrapper {
  max-width: var(--max-width-content);
}

.content-wrapper-narrow {
  max-width: var(--max-width-text);
}

/* ---- Panel Component ---- */
.panel {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 0;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.panel:hover {
  border-color: var(--color-rust);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--color-ink);
  margin: 0;
  font-weight: 500;
}

.panel-indicator {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--color-rust);
}

.panel-indicator-cyan,
.panel-indicator-green {
  background: var(--color-green);
}

.panel-indicator-amber {
  background: var(--color-rust);
}

.panel-action {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-rust);
}

.panel-body {
  padding: 16px;
}

/* ---- Link Utilities ---- */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-rust);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  text-decoration: none;
}

.link-arrow::after {
  content: '\2192';
  transition: transform var(--transition-fast);
}

.link-arrow:hover {
  color: var(--color-rust-light);
}

.link-arrow:hover::after {
  transform: translateX(3px);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 11px 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid var(--color-ink);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.button:hover {
  background: var(--color-rust);
  border-color: var(--color-rust);
  color: var(--color-white);
}

.button-secondary {
  background: transparent;
  color: var(--color-ink);
  border: 2px solid var(--color-border);
}

.button-secondary:hover {
  background: var(--color-paper-warm);
  border-color: var(--color-rust);
  color: var(--color-rust);
}

.divider {
  height: 1px;
  border: none;
  background: var(--color-border);
  margin: var(--space-10) 0;
}

/* ---- Post Layout ---- */
.post {
  max-width: var(--max-width-content);
  margin: 0 auto;
}

.post::before {
  content: none;
}

.post-header {
  margin-bottom: 44px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

.post-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.05;
  font-weight: 600;
  color: var(--color-ink);
  margin: 0 0 10px;
}

.post-description {
  margin: 0 0 14px;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  font-style: italic;
  color: var(--color-ink-soft);
  line-height: 1.5;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-top: 14px;
}

.post-content {
  font-size: 1.05rem;
  line-height: 1.82;
  max-width: var(--max-width-text);
  color: var(--color-ink-soft);
}

.post-content h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.post-content h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-top: 2rem;
}

.post-content img {
  margin: 2rem 0;
  border-radius: var(--border-radius);
}

.post-footer {
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.post-footer-text {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---- Book List Items ---- */
.book-item {
  padding: 12px 8px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  font-size: 14px;
  transition: background var(--transition-fast), padding var(--transition-fast);
}

.book-item:hover {
  background: var(--color-rust-pale);
}

.book-item:last-child {
  border-bottom: none;
}

.book-listing-main {
  min-width: 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.book-depth-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-rust);
  flex-shrink: 0;
  align-self: center;
}

.five-star-book .book-depth-dot {
  background: var(--color-rust-light);
}

.has-notes .book-depth-dot {
  background: var(--color-ink);
}

.book-title-link {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
}

.book-title-link:hover {
  color: var(--color-rust);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.book-title {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
}

.note-icon {
  font-size: 10px;
  vertical-align: super;
  color: var(--color-rust);
}

.book-author {
  font-family: var(--font-body);
  font-size: 13px;
  font-style: italic;
  color: var(--color-muted);
}

.book-rating {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-rust);
  white-space: nowrap;
}

.book-rating .stars {
  letter-spacing: 0.05em;
}

.currently-reading,
.book-rating .currently-reading {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-green);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.unrated-text,
.book-rating .unrated-text {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-muted);
  text-transform: uppercase;
}

/* ---- Feature Grid ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1px;
  margin: 20px 0;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.feature-card {
  padding: 16px;
  background: var(--color-white);
}

.feature-card h3 {
  margin: 0 0 6px;
  font-size: 15px;
}

.feature-card h3::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-rust);
  margin-right: 8px;
  vertical-align: middle;
}

.feature-card p {
  margin: 0;
  font-size: 13px;
}

/* ---- Callout ---- */
.callout {
  background: var(--color-paper-warm);
  border-left: 3px solid var(--color-rust);
  padding: 16px 20px;
  margin: 20px 0;
  border-radius: var(--border-radius);
}

/* ---- Screenshot Strip ---- */
.screenshot-strip {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(150px, 200px);
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px 0 16px;
}

.screenshot-card {
  margin: 0;
  scroll-snap-align: start;
}

.screenshot-card img {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
}

/* ---- Stack Grid (Etch stacks) ---- */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  margin: 16px 0;
  border-radius: var(--border-radius);
  overflow: hidden;
}

.stack-card {
  text-decoration: none;
  color: inherit;
}

.stack-card-stack {
  padding: 14px;
  background: var(--color-white);
  height: 100%;
  transition: background var(--transition-fast);
}

.stack-card:hover .stack-card-stack {
  background: var(--color-paper);
}

.stack-card-front {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.stack-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.stack-card-count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stack-card-title {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin: 0;
  line-height: 1.3;
}

.stack-card-desc {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--color-muted);
  margin: 4px 0 0;
  line-height: 1.4;
}

.stack-card-icon {
  font-size: 16px;
  color: var(--color-rust);
}

/* ---- Code Copy Button ---- */
.code-copy-button {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--color-ink);
  color: var(--color-paper);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  cursor: pointer;
  opacity: 0;
  border: none;
  border-radius: 3px;
  transition: opacity var(--transition-fast), background var(--transition-fast);
}

pre:hover .code-copy-button {
  opacity: 1;
}

.code-copy-button:hover {
  background: var(--color-rust);
  color: var(--color-white);
}

/* ---- Animations ---- */
.animate-in {
  animation: expeditionReveal 500ms var(--ease-out) both;
}

.delay-1,
.animate-in-delay-1 {
  animation-delay: 80ms;
}

.delay-2 {
  animation-delay: 160ms;
}

.delay-3 {
  animation-delay: 240ms;
}

.reveal-ready[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 480ms ease, transform 480ms var(--ease-out);
}

.reveal-ready[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes expeditionReveal {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-green);
  display: inline-block;
}

.keyboard-nav *:focus {
  outline: 2px solid var(--color-rust);
  outline-offset: 2px;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  .expedition-nav {
    height: 56px;
  }

  .nav-waypoint a {
    padding: 6px 12px;
  }

  .waypoint-label {
    font-size: 9px;
  }

  .ai-design-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .main-content-area {
    padding-bottom: calc(56px + 12px);
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 14px;
  }
}

@media (max-width: 480px) {
  .nav-brand-mark {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .nav-waypoint a {
    padding: 6px 8px;
    gap: 2px;
  }

  .waypoint-label {
    font-size: 8px;
  }

  html {
    font-size: 15px;
  }

  .post-title {
    font-size: 27px;
  }
}