/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Core palette - dark editor theme */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-hover: #30363d;
  --border-primary: #30363d;
  --border-secondary: #21262d;
  --border-accent: #58a6ff;

  /* Diff colors - FIXED for contrast (WCAG AA compliant)
     Backgrounds are subtle tints; text is always neutral high-contrast */
  --diff-red-bg: #2a1215;
  --diff-red-bg-highlight: #3d1a1e;
  --diff-red-accent: #f85149;
  --diff-red-border: #f8514966;
  --diff-green-bg: #0f2318;
  --diff-green-bg-highlight: #163d28;
  --diff-green-accent: #3fb950;
  --diff-green-border: #3fb95066;

  /* Text colors - all body text uses neutral high-contrast colors */
  --text-primary: #e6edf3;
  --text-secondary: #b1bac4;
  --text-tertiary: #8b949e;
  --text-muted: #6e7681;
  --text-link: #58a6ff;
  --text-accent: #d2a8ff;

  /* Typography */
  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'JetBrains Mono', Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.9375rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.75rem;
  --line-height-tight: 1.3;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Layout */
  --sidebar-width: 260px;
  --content-max-width: 960px;
  --tab-height: 38px;
  --header-height: 40px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

a { color: var(--text-link); text-decoration: none; transition: color var(--transition-fast); }
a:hover { text-decoration: underline; }
::selection { background: #264f78; color: #fff; }

/* Skip nav for accessibility */
.skip-nav {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-size: var(--font-size-sm);
}
.skip-nav:focus { top: var(--space-sm); }

/* ============================================================
   LAYOUT: IDE-STYLE SHELL
   ============================================================ */
/* Splash screen */
#splash {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: #111; z-index: 9999; overflow: hidden;
  transition: opacity 0.8s ease;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 16px;
}
#splash.fade-out { opacity: 0; pointer-events: none; }
#splash.splash--landscape {
  flex-direction: row; gap: 32px;
}
#splash-portrait-wrap {
  position: relative; flex-shrink: 0;
}
#splash-container {
  position: absolute; top: 0; left: 0;
  font-family: 'Courier New', monospace;
  font-size: 7px; line-height: 7.5px; letter-spacing: 1px;
}
#splash-footer {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
#splash.splash--landscape #splash-footer {
  align-items: flex-start; gap: 12px;
}
#splash-enter {
  font-family: 'Courier New', monospace; font-size: 24px;
  color: #e6edf3; background: none; border: none;
  padding: 12px 0; cursor: pointer; letter-spacing: 2px;
  transition: color 0.3s, opacity 1s ease;
  opacity: 0; pointer-events: none; white-space: nowrap;
}
#splash-enter.visible { opacity: 1; pointer-events: auto; }
#splash-enter:hover { color: #58a6ff; }
#splash-copyright {
  font-family: 'Courier New', monospace; font-size: 12px;
  color: #555;
  transition: opacity 1s ease; opacity: 0; white-space: nowrap;
}
#splash-copyright.visible { opacity: 1; }

.app-shell { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }

/* Mobile menu button (floats over sidebar area on small screens) */

.main-layout { display: flex; flex: 1; overflow: hidden; }

/* ============================================================
   SIDEBAR: FILE TREE
   ============================================================ */
.sidebar {
  width: var(--sidebar-width); background: var(--bg-secondary);
  border-right: 1px solid var(--border-primary);
  display: flex; flex-direction: column; flex-shrink: 0;
  overflow-y: auto; overflow-x: hidden;
}
.sidebar__header {
  padding: var(--space-sm) var(--space-md); font-size: var(--font-size-xs);
  color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em;
  border-bottom: 1px solid var(--border-secondary);
  position: sticky; top: 0; background: var(--bg-secondary); z-index: 2;
}
.file-tree { list-style: none; padding: var(--space-sm) 0; font-size: var(--font-size-sm); font-family: var(--font-sans); }
.file-tree__item {
  display: flex; align-items: center; padding: 4px var(--space-md);
  cursor: pointer; color: var(--text-tertiary); position: relative;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap; user-select: none;
}
.file-tree__item:hover { background: var(--bg-hover); color: var(--text-primary); }
.file-tree__item--active { background: var(--bg-tertiary); color: var(--text-primary); }
.file-tree__item--active::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px; background: var(--border-accent);
}
.file-tree__icon {
  width: 16px; height: 16px; margin-right: 8px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 14px;
}
.file-tree__folder { padding-left: calc(var(--space-md) + 16px); }
.file-tree__subfolder { padding-left: calc(var(--space-md) + 32px); }
.file-tree__item--nonav { cursor: default; }
.file-tree__item--nonav:hover { background: transparent; color: var(--text-tertiary); }
.file-tree__divider { height: 1px; background: var(--border-secondary); margin: var(--space-sm) var(--space-md); }

.sidebar__stats {
  margin-top: auto; padding: var(--space-md); border-top: 1px solid var(--border-secondary);
}
.sidebar__stat {
  display: flex; justify-content: space-between; padding: 3px 0;
  font-size: var(--font-size-xs); color: var(--text-muted);
}
.sidebar__stat-value { color: var(--diff-green-accent); font-weight: 600; }

/* ============================================================
   TAB BAR
   ============================================================ */
.tab-bar {
  display: flex; height: var(--tab-height); background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  overflow-x: auto; flex-shrink: 0; scrollbar-width: none;
}
.tab-bar::-webkit-scrollbar { display: none; }

.tab {
  display: flex; align-items: center; padding: 0 var(--space-lg);
  font-size: var(--font-size-sm); color: var(--text-tertiary);
  background: var(--bg-secondary); border-right: 1px solid var(--border-primary);
  cursor: pointer; white-space: nowrap; position: relative; user-select: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.tab:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.tab--active { background: var(--bg-primary); color: var(--text-primary); }
.tab--active::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--border-accent);
}
.tab__icon { margin-right: 6px; font-size: 14px; }
.tab__modified { width: 8px; height: 8px; border-radius: 50%; background: #d29922; margin-left: 8px; }

/* ============================================================
   CONTENT AREA
   ============================================================ */
.content-area { flex: 1; overflow-y: auto; overflow-x: hidden; scroll-behavior: smooth; }

.content-panel {
  display: none; padding: var(--space-2xl) var(--space-xl);
  max-width: var(--content-max-width); margin: 0 auto;
  animation: fadeIn 0.3s ease;
}
.content-panel--active { display: block; }
#panel-craft { padding: 0; max-width: none; }
#panel-craft .code-view { min-height: 100%; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
  display: flex; align-items: center; gap: var(--space-md);
  margin-bottom: var(--space-xl); padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-primary);
}
.section-header__version {
  font-size: var(--font-size-xs); color: var(--text-accent);
  background: #2d1b4e; padding: 2px 8px; border-radius: var(--radius-sm); font-weight: 600;
}
.section-header__title {
  font-family: var(--font-sans); font-size: var(--font-size-xl);
  font-weight: 600; color: var(--text-primary);
}
.section-header__path {
  font-size: var(--font-size-sm); color: var(--text-muted); margin-left: auto;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero { padding: var(--space-3xl) 0 var(--space-2xl); }

.hero__badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--font-size-xs); color: var(--text-primary);
  background: var(--diff-green-bg); border: 1px solid var(--diff-green-border);
  padding: 4px 12px; border-radius: 999px; margin-bottom: var(--space-lg);
}
.hero__badge::before {
  content: ''; width: 8px; height: 8px; border-radius: 50%;
  background: var(--diff-green-accent); animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 0.6; } 50% { opacity: 1; } }

.hero__name {
  font-family: var(--font-sans); font-size: var(--font-size-3xl);
  font-weight: 700; color: var(--text-primary);
  line-height: var(--line-height-tight); margin-bottom: var(--space-md);
}
.hero__subtitle {
  font-size: var(--font-size-lg); color: var(--text-secondary);
  margin-bottom: var(--space-md); max-width: 640px; font-family: var(--font-sans);
  line-height: var(--line-height-normal);
}
.hero__explainer {
  font-size: var(--font-size-sm); color: var(--text-muted);
  margin-bottom: var(--space-2xl); font-style: italic;
}

/* ============================================================
   DIFF BLOCKS (used only where genuine before/after exists)
   ============================================================ */
.diff-block {
  background: var(--bg-secondary); border: 1px solid var(--border-primary);
  border-radius: var(--radius-md); overflow: hidden; margin-bottom: var(--space-xl);
}
.diff-block__header {
  display: flex; align-items: center; gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md); background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-primary); font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}
.diff-block__filename { color: var(--text-primary); font-weight: 600; }
.diff-block__stats { margin-left: auto; display: flex; gap: var(--space-sm); font-size: var(--font-size-xs); }
.diff-block__additions { color: var(--diff-green-accent); }
.diff-block__deletions { color: var(--diff-red-accent); }

.diff-line {
  display: flex; padding: 2px var(--space-md); font-size: var(--font-size-sm);
  line-height: 1.7; border-left: 3px solid transparent;
}
/* FIXED: Use neutral text colors on colored backgrounds for WCAG AA compliance */
.diff-line--removed {
  background: var(--diff-red-bg); border-left-color: var(--diff-red-accent);
  color: var(--text-secondary); border-left-style: dashed;
}
.diff-line--added {
  background: var(--diff-green-bg); border-left-color: var(--diff-green-accent);
  color: var(--text-primary); border-left-style: solid;
}
.diff-line--context { color: var(--text-tertiary); }
.diff-line--header { color: var(--text-accent); background: #1c1236; font-style: italic; }

.diff-line__number {
  width: 48px; flex-shrink: 0; color: var(--text-muted);
  text-align: right; padding-right: var(--space-md);
  user-select: none; font-size: var(--font-size-xs);
}
.diff-line__prefix {
  width: 20px; flex-shrink: 0; user-select: none; font-weight: 700;
}
/* Prefix colors are accent; content text stays neutral */
.diff-line--removed .diff-line__prefix { color: var(--diff-red-accent); }
.diff-line--added .diff-line__prefix { color: var(--diff-green-accent); }

.diff-line__content { flex: 1; white-space: pre-wrap; word-break: break-word; }

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px; background: var(--border-primary); border: 1px solid var(--border-primary);
  border-radius: var(--radius-md); overflow: hidden; margin: var(--space-2xl) 0;
}
.stat-cell {
  background: var(--bg-secondary); padding: var(--space-lg) var(--space-md);
  text-align: center; transition: background var(--transition-fast);
}
.stat-cell:hover { background: var(--bg-tertiary); }
.stat-cell__value {
  font-size: var(--font-size-xl); font-weight: 700;
  color: var(--diff-green-accent); display: block; font-family: var(--font-sans);
}
.stat-cell__label {
  font-size: var(--font-size-xs); color: var(--text-muted); margin-top: 4px; display: block;
}

/* ============================================================
   CONTRIBUTION GRAPH
   ============================================================ */
.contrib-graph {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-xl);
}

.contrib-graph__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-primary);
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.contrib-graph__header-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--text-tertiary);
}

.contrib-graph__filename {
  color: var(--text-primary);
  font-weight: 600;
}

.contrib-graph__count {
  margin-left: auto;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.contrib-graph__count strong {
  color: var(--text-tertiary);
  font-weight: 600;
}

.contrib-graph__body {
  padding: var(--space-lg) var(--space-md);
  overflow-x: auto;
  overflow-y: hidden;
}

.contrib-graph__wrapper {
  display: inline-flex;
  flex-direction: column;
  gap: var(--space-xs);
  min-width: max-content;
}

.contrib-graph__months {
  display: flex;
  padding-left: 36px;
  font-size: 10px;
  color: var(--text-muted);
  user-select: none;
}

.contrib-graph__month-label {
  text-align: left;
  font-family: var(--font-sans);
}

.contrib-graph__grid-area {
  display: flex;
  gap: var(--space-xs);
}

.contrib-graph__day-labels {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  flex-shrink: 0;
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-sans);
  user-select: none;
}

.contrib-graph__day-label {
  height: 11px;
  display: flex;
  align-items: center;
  line-height: 1;
}

.contrib-graph__grid {
  display: grid;
  grid-template-rows: repeat(7, 11px);
  grid-auto-flow: column;
  grid-auto-columns: 11px;
  gap: 3px;
}

.contrib-graph__cell {
  width: 11px;
  height: 11px;
  border-radius: 2px;
  outline: 1px solid rgba(27, 31, 35, 0.06);
  cursor: pointer;
  transition: transform 80ms ease, outline-color 80ms ease;
  position: relative;
}

.contrib-graph__cell:hover {
  transform: scale(1.35);
  outline-color: var(--text-muted);
  z-index: 2;
}

.contrib-graph__cell--level-0 { background: #21262d; }
.contrib-graph__cell--level-1 { background: #0e4429; }
.contrib-graph__cell--level-2 { background: #006d32; }
.contrib-graph__cell--level-3 { background: #26a641; }
.contrib-graph__cell--level-4 { background: #39d353; }

.contrib-graph__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md) var(--space-md);
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-sans);
  user-select: none;
}

.contrib-graph__legend {
  display: flex;
  align-items: center;
  gap: 3px;
}

.contrib-graph__legend-label {
  margin: 0 4px;
}

.contrib-graph__legend-cell {
  width: 11px;
  height: 11px;
  border-radius: 2px;
}

/* ============================================================
   CONTRIBUTION TOOLTIP
   ============================================================ */
.contrib-tooltip {
  position: fixed;
  pointer-events: none;
  z-index: 1000;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 11px;
  font-family: var(--font-sans);
  color: var(--text-primary);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 100ms ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.contrib-tooltip--visible {
  opacity: 1;
}

.contrib-tooltip__count {
  font-weight: 600;
}

.contrib-tooltip__date {
  color: var(--text-muted);
}

/* ============================================================
   MARKDOWN RENDERED CONTENT (for non-diff panels)
   ============================================================ */
.md-content {
  font-family: var(--font-sans);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}
.md-content h2 {
  font-size: var(--font-size-xl); font-weight: 700; color: var(--text-primary);
  margin: var(--space-2xl) 0 var(--space-md); padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-primary);
}
.md-content h3 {
  font-size: var(--font-size-lg); font-weight: 600; color: var(--text-primary);
  margin: var(--space-xl) 0 var(--space-sm);
}
.md-content h4 {
  font-size: var(--font-size-base); font-weight: 600; color: var(--text-primary);
  margin: var(--space-lg) 0 var(--space-xs);
}
.md-content p {
  margin-bottom: var(--space-md); color: var(--text-secondary);
}
.md-content ul, .md-content ol {
  margin-bottom: var(--space-md); padding-left: var(--space-xl);
}
.md-content li {
  margin-bottom: var(--space-xs); color: var(--text-secondary);
}
.md-content strong { color: var(--text-primary); }

.md-content blockquote {
  margin: var(--space-lg) 0; padding: var(--space-md) var(--space-lg);
  border-left: 3px solid var(--text-accent); background: var(--bg-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic; color: var(--text-secondary);
}
.md-content blockquote p { margin-bottom: 0; }

.md-content code {
  font-family: var(--font-mono); font-size: var(--font-size-sm);
  background: var(--bg-tertiary); padding: 2px 6px;
  border-radius: var(--radius-sm); color: var(--text-primary);
}

/* ============================================================
   RAW MARKDOWN TEXT DISPLAY (code editor style for how-i-work)
   ============================================================ */
.code-view {
  display: flex;
  min-height: 100%;
}
.code-view__gutter {
  width: 50px; min-width: 50px; padding: 20px 0;
  text-align: right; color: var(--text-muted); font-size: 13px;
  line-height: 1.5; user-select: none; background: var(--bg-primary);
  border-right: 1px solid var(--border-primary);
}
.code-view__gutter .ln {
  display: block; padding-right: 12px; height: 19.5px;
}
.code-view__text {
  flex: 1; padding: 20px 0 20px 16px;
  font-family: var(--font-mono); font-size: 13px; line-height: 1.5;
  color: var(--text-secondary); white-space: pre; tab-size: 4;
}
.code-view__text .file-link {
  color: var(--text-link); cursor: pointer; text-decoration: none;
}
.code-view__text .file-link:hover { text-decoration: underline; }

/* Markdown syntax highlighting (terminal-style) */
.md-hl-h1 { color: var(--text-accent); font-weight: 700; }
.md-hl-h2 { color: var(--text-link); font-weight: 700; }
.md-hl-h3 { color: var(--diff-green-accent); font-weight: 600; }
.md-hl-bold { color: var(--text-primary); font-weight: 700; }
.md-hl-italic { color: var(--text-secondary); font-style: italic; }
.md-hl-link { color: var(--text-link); }
.md-hl-list-marker { color: var(--diff-green-accent); font-weight: 700; }
.md-hl-hr { color: var(--text-muted); }
.md-hl-emphasis-marker { color: var(--text-muted); }

/* How-I-Work section blocks */
.hiw-section {
  border-bottom: 1px solid var(--border-primary);
}
.hiw-section:last-child { border-bottom: none; }
.hiw-section__header {
  display: flex; align-items: center; gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md); background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-primary); font-size: var(--font-size-sm);
  color: var(--text-tertiary); position: sticky; top: 0; z-index: 1;
}
.hiw-section__filename { color: var(--text-primary); font-weight: 600; }


/* ============================================================
   PROJECT CARDS - FEATURED (large, with diff)
   ============================================================ */
.project-featured {
  background: var(--bg-secondary); border: 1px solid var(--border-primary);
  border-radius: var(--radius-md); margin-bottom: var(--space-2xl);
  overflow: hidden; transition: border-color var(--transition-normal);
}
.project-featured:hover { border-color: var(--border-accent); }

.project-featured__header {
  display: flex; align-items: center; gap: var(--space-md);
  padding: var(--space-md) var(--space-lg); background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-primary);
}
.project-featured__name { font-size: var(--font-size-base); font-weight: 600; color: var(--text-primary); }

.project-featured__body {
  padding: var(--space-lg);
  font-family: var(--font-sans);
}
.project-featured__body p {
  font-size: var(--font-size-sm); color: var(--text-secondary);
  line-height: var(--line-height-normal); margin-bottom: var(--space-md);
}
.project-featured__body strong { color: var(--text-primary); }

/* Split diff inside featured project */
.project-diff {
  display: grid; grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--border-primary);
}
.project-diff__before, .project-diff__after {
  padding: var(--space-lg);
}
.project-diff__before {
  background: var(--diff-red-bg); border-right: 1px solid var(--border-primary);
  border-left: 3px dashed var(--diff-red-accent);
}
.project-diff__after {
  background: var(--diff-green-bg);
  border-left: 3px solid var(--diff-green-accent);
}
.project-diff__label {
  display: flex; align-items: center; gap: 6px;
  font-size: var(--font-size-xs); text-transform: uppercase;
  letter-spacing: 0.1em; margin-bottom: var(--space-md); font-weight: 700;
  font-family: var(--font-mono);
}
/* Labels use accent color; text body uses neutral */
.project-diff__label--before { color: var(--diff-red-accent); }
.project-diff__label--after { color: var(--diff-green-accent); }
.project-diff__text {
  font-family: var(--font-sans); font-size: var(--font-size-sm);
  line-height: var(--line-height-normal); color: var(--text-secondary);
}

.project-featured__insight {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-primary); background: var(--bg-secondary);
  font-size: var(--font-size-sm); display: flex; gap: var(--space-sm); align-items: flex-start;
}
.project-featured__insight-label { color: var(--text-accent); font-weight: 700; white-space: nowrap; flex-shrink: 0; }
.project-featured__insight-text { color: var(--text-secondary); font-family: var(--font-sans); }

/* ============================================================
   PROJECT CARDS - MEDIUM (internal tools)
   ============================================================ */
.project-medium {
  background: var(--bg-secondary); border: 1px solid var(--border-primary);
  border-radius: var(--radius-md); margin-bottom: var(--space-lg);
  overflow: hidden; transition: border-color var(--transition-normal);
}
.project-medium:hover { border-color: var(--border-accent); }

.project-medium__header {
  display: flex; align-items: center; gap: var(--space-md);
  padding: var(--space-sm) var(--space-lg); background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-primary);
}
.project-medium__name { font-size: var(--font-size-sm); font-weight: 600; color: var(--text-primary); }
.project-medium__body {
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-sans); font-size: var(--font-size-sm);
  color: var(--text-secondary); line-height: var(--line-height-normal);
}
.project-medium__body strong { color: var(--text-primary); }
.project-medium__outcome {
  padding: var(--space-sm) var(--space-lg) var(--space-md);
  font-size: var(--font-size-sm); font-family: var(--font-mono);
  color: var(--text-accent);
}

/* ============================================================
   PROJECT CARDS - COMPACT (building aptitude)
   ============================================================ */
.project-compact {
  display: flex; align-items: center; gap: var(--space-md);
  background: var(--bg-secondary); border: 1px solid var(--border-primary);
  border-radius: var(--radius-md); padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-sm); transition: border-color var(--transition-normal);
}
.project-compact:hover { border-color: var(--border-accent); }
.project-compact__name { font-size: var(--font-size-sm); font-weight: 600; color: var(--text-primary); white-space: nowrap; }
.project-compact__desc {
  font-size: var(--font-size-sm); color: var(--text-tertiary);
  font-family: var(--font-sans); flex: 1;
}
.project-compact__link {
  font-size: var(--font-size-xs); color: var(--text-link); white-space: nowrap;
}

/* ============================================================
   EXPERIENCE - CHANGELOG
   ============================================================ */
.changelog-entry { margin-bottom: var(--space-2xl); position: relative; }
.changelog-entry::before {
  content: ''; position: absolute; left: 7px; top: 28px; bottom: -24px;
  width: 2px; background: var(--border-primary);
}
.changelog-entry:last-child::before { display: none; }

.changelog-version { display: flex; align-items: center; gap: var(--space-md); margin-bottom: var(--space-md); }
.changelog-version__dot {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--bg-tertiary); border: 2px solid var(--border-accent);
  flex-shrink: 0; position: relative; z-index: 1;
}
.changelog-version__tag {
  font-size: var(--font-size-sm); font-weight: 700; color: var(--text-accent);
  background: #2d1b4e; padding: 2px 10px; border-radius: var(--radius-sm);
}
.changelog-version__title {
  font-size: var(--font-size-base);
  font-weight: 600; color: var(--text-primary);
}
.changelog-version__period { font-size: var(--font-size-xs); color: var(--text-muted); margin-left: auto; }

.changelog-body { margin-left: 32px; padding-left: var(--space-lg); }
.changelog-section { margin-bottom: var(--space-md); }
.changelog-section__label {
  font-size: var(--font-size-xs); text-transform: uppercase;
  letter-spacing: 0.05em; font-weight: 700; margin-bottom: var(--space-xs);
}
.changelog-section__label--added { color: var(--diff-green-accent); }
.changelog-section__label--changed { color: #d29922; }
.changelog-section__label--fixed { color: var(--text-link); }
.changelog-section__label--result { color: var(--text-accent); }

.changelog-item {
  font-size: var(--font-size-sm); color: var(--text-secondary); padding: 2px 0;
  padding-left: var(--space-md); position: relative;
}
.changelog-item::before { content: '-'; position: absolute; left: 0; color: var(--text-muted); }
.changelog-item--result { font-weight: 600; color: var(--text-accent); }
.changelog-item--result::before { content: '=>'; color: var(--text-accent); left: -4px; }

/* ============================================================
   TESTIMONIALS - CODE REVIEW APPROVALS
   ============================================================ */
.review-card {
  background: var(--bg-secondary); border: 1px solid var(--border-primary);
  border-radius: var(--radius-md); margin-bottom: var(--space-lg);
  overflow: hidden; transition: border-color var(--transition-normal);
}
.review-card:hover { border-color: var(--diff-green-border); }

.review-card__header {
  display: flex; align-items: center; gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md); background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-primary); font-size: var(--font-size-sm);
}
.review-card__status { color: #3fb950; font-size: 16px; font-weight: 700; }
.review-card__reviewer { color: var(--text-primary); font-weight: 600; }
.review-card__role { color: var(--text-muted); font-size: var(--font-size-xs); }
.review-card__body {
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-sans); font-size: var(--font-size-sm);
  color: var(--text-secondary); line-height: var(--line-height-normal); font-style: italic;
}


/* ============================================================
   CONTACT / CTA
   ============================================================ */
.contact-section { padding: var(--space-3xl) 0; }
.contact-section__heading {
  font-family: var(--font-sans); font-size: var(--font-size-2xl);
  font-weight: 700; color: var(--text-primary); margin-bottom: var(--space-md);
}
.contact-section__sub {
  font-size: var(--font-size-base); color: var(--text-secondary);
  margin-bottom: var(--space-xl); font-family: var(--font-sans);
  max-width: 600px; line-height: var(--line-height-normal);
}

.consulting-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md); margin-bottom: var(--space-2xl);
}
.consulting-card {
  background: var(--bg-secondary); border: 1px solid var(--border-primary);
  border-radius: var(--radius-md); padding: var(--space-lg);
}
.consulting-card__title {
  font-family: var(--font-sans); font-size: var(--font-size-sm);
  font-weight: 600; color: var(--text-primary); margin-bottom: var(--space-xs);
}
.consulting-card__desc {
  font-family: var(--font-sans); font-size: var(--font-size-xs);
  color: var(--text-tertiary); line-height: var(--line-height-normal);
}


.connect-btn {
  display: inline-flex; align-items: center; gap: var(--space-sm);
  padding: 12px 28px; background: #238636; color: #fff;
  font-family: var(--font-mono); font-size: var(--font-size-sm);
  font-weight: 600; border: 1px solid #2ea043;
  border-radius: var(--radius-md); cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
  text-decoration: none; margin-bottom: var(--space-xl);
}
.connect-btn:hover { background: #2ea043; transform: translateY(-1px); text-decoration: none; }

/* ============================================================
   STATUS BAR
   ============================================================ */
.status-bar {
  display: flex; align-items: center; height: 24px;
  padding: 0 var(--space-md); background: #0969da;
  font-size: var(--font-size-xs); color: #fff; flex-shrink: 0; gap: var(--space-lg);
}
.status-bar__item { display: flex; align-items: center; gap: 4px; white-space: nowrap; }
.status-bar__right { margin-left: auto; display: flex; gap: var(--space-lg); }

/* ============================================================
   SCROLL ANIMATION
   ============================================================ */
.reveal {
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal--visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  @keyframes pulse { 0%, 100% { opacity: 1; } }
  .content-panel { animation: none; }
}

/* ============================================================
   MOBILE MENU TOGGLE
   ============================================================ */
.mobile-menu-btn {
  display: none; background: none; border: none;
  color: var(--text-secondary); font-size: 18px; cursor: pointer; padding: 8px 12px;
  position: fixed; top: 0; left: 0; z-index: 101;
  background: var(--bg-secondary);
}

.mobile-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  z-index: 99; display: none;
}
.mobile-overlay--visible { display: block; }

/* ============================================================
   MOBILE RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; align-items: center; }
  .sidebar { display: none; }
  .sidebar--mobile-open {
    display: flex; position: fixed;
    top: 0; left: 0; bottom: 24px;
    width: 280px; z-index: 100;
    box-shadow: 4px 0 24px rgba(0,0,0,0.5);
  }
  .content-panel { padding: var(--space-lg) var(--space-md); }
  .hero__name { font-size: var(--font-size-2xl); }

  .project-diff { grid-template-columns: 1fr; }
  .project-diff__before { border-right: none; border-bottom: 1px solid var(--border-primary); }

  .diff-line__number { width: 32px; font-size: 10px; }
  .section-header { flex-wrap: wrap; }
  .section-header__path { margin-left: 0; width: 100%; order: -1; }

  .changelog-version { flex-wrap: wrap; }
  .changelog-version__period { margin-left: 0; width: 100%; padding-left: 32px; }

  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .tab { padding: 0 var(--space-md); font-size: var(--font-size-xs); }
  .status-bar { overflow-x: auto; }
  .consulting-grid { grid-template-columns: 1fr; }

  .project-compact { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .hero__name { font-size: 1.6rem; }
  .diff-line { font-size: var(--font-size-xs); }
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--bg-hover); border-radius: 5px; border: 2px solid var(--bg-primary); }
::-webkit-scrollbar-thumb:hover { background: #484f58; }

/* Artifact placeholders */
.artifact-placeholder {
  border: 2px dashed var(--border-primary);
  border-radius: var(--radius-md);
  padding: var(--space-2xl) var(--space-lg);
  margin: var(--space-lg) 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  background: var(--bg-secondary);
  min-height: 180px;
}
.artifact-placeholder__icon {
  font-size: 2.5rem;
  opacity: 0.5;
}
.artifact-placeholder__label {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  text-align: center;
}