/* ============================================================
   DESIGN TOKENS — CSS Custom Properties
   ============================================================ */
:root {
  /* Brand colours */
  --color-green:  #00C17B;
  --color-blue:   #2563EB;
  --color-orange: #E87722;
  --color-purple: #7B2D8B;
  --color-yellow: #F5B800;
  --color-red:    #E2231A;

  /* Light theme (default) */
  --bg:           #F6F3ED;
  --bg-alt:       #EDE9E0;
  --surface:      #FDFCF9;
  --surface-2:    #F2EFE8;
  --border:       #D8D4CA;
  --text:         #111110;
  --text-muted:   #5C5A55;
  --text-faint:   #9A9790;
  --focus-ring:   var(--color-green);
  --shadow-sm:    0 1px 2px rgba(0,0,0,.05);
  --shadow-md:    0 2px 8px rgba(0,0,0,.07);
  --shadow-lg:    0 4px 16px rgba(0,0,0,.09);
  --radius-sm:    2px;
  --radius-md:    3px;
  --radius-lg:    3px;
  --radius-xl:    4px;

  /* Typography */
  --font-sans:    'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Lora', Georgia, 'Times New Roman', serif;
  --font-mono:    'Fira Code', 'Cascadia Code', 'Consolas', monospace;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* Layout */
  --max-w:     1100px;
  --max-w-narrow: 720px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-mid:  250ms ease;
  --transition-slow: 400ms cubic-bezier(.4,0,.2,1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #18170F;
    --bg-alt:    #201F16;
    --surface:   #26251B;
    --surface-2: #2D2C22;
    --border:    #3C3A2E;
    --text:      #EDE8DC;
    --text-muted:#9E9A8E;
    --text-faint:#5E5B50;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.4);
    --shadow-md: 0 4px 12px rgba(0,0,0,.5);
    --shadow-lg: 0 12px 32px rgba(0,0,0,.6);
  }
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

body {
  font-family: var(--font-display);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

/* ============================================================
   SKIP LINK
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-green);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: var(--space-md);
}

/* ============================================================
   FOCUS STYLES
   ============================================================ */
:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.ns-wordmark {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-link {
  padding: var(--space-xs) var(--space-sm);
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--text);
}

.nav-link.nav-cta {
  background: var(--color-green);
  color: #fff;
  font-weight: 600;
  border-radius: 3px;
  padding: var(--space-xs) var(--space-md);
}

.nav-link.nav-cta:hover {
  background: color-mix(in srgb, var(--color-green) 85%, #000);
  color: #fff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform var(--transition-mid), opacity var(--transition-mid);
}

.mobile-nav {
  border-top: 1px solid var(--border);
  padding: var(--space-md) var(--space-xl);
  background: var(--bg);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.mobile-nav-link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--text);
}

@media (max-width: 768px) {
  .nav-list { display: none; }
  .nav-toggle { display: flex; }
  .header-inner { padding: var(--space-md); }
}

/* ============================================================
   SECTION SCAFFOLD
   ============================================================ */
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section-inner--narrow {
  max-width: var(--max-w-narrow);
}

.section-label {
  font-size: .8rem;
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text-faint);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.01em;
  margin-bottom: var(--space-md);
}

.title-accent {
  color: var(--color-green);
}

.section-intro {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 56ch;
  margin-bottom: var(--space-2xl);
}

.section-connector {
  display: flex;
  justify-content: center;
  padding: var(--space-lg) 0;
  overflow: hidden;
}

.loopy-arrow {
  width: 120px;
  height: 72px;
}

.arrow-path {
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
  transition: stroke-dashoffset 1s cubic-bezier(.4,0,.2,1);
}

.arrow-path.is-drawn {
  stroke-dashoffset: 0;
}

/* ============================================================
   HERO
   ============================================================ */
.section-hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: var(--space-3xl) 0 var(--space-2xl);
}

.hero-bg-map {
  position: absolute;
  inset: 0;
  pointer-events: none;
  color: var(--text);
}

.map-svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
  padding: 0 var(--space-xl);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0 0 var(--space-sm);
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-faint);
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-green);
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 1; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
  margin-bottom: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: .25em;
}

.eq-row {
  display: flex;
  align-items: baseline;
  gap: .25em;
}

.eq-row--underline {
  margin-bottom: .2em;
}

.eq-row--result {
  opacity: .85;
}

.eq-op {
  font-size: .9em;
  font-weight: 700;
  color: var(--text-muted);
  width: 1.1em;
  text-align: right;
  flex-shrink: 0;
}

.eq-op--hidden {
  visibility: hidden;
}

.eq-term {
  /* inherits hero-title size */
}

.eq-term-stack {
  display: flex;
  flex-direction: column;
  gap: .15em;
  border-top: 3px solid var(--color-green);
  padding-top: .35em;
  padding-right: .5em;
}

.eq-qualifier--block {
  font-size: .42em;
  font-weight: 400;
  color: var(--text-faint);
  font-style: italic;
  align-self: flex-end;
  text-align: right;
}

.eq-qualifier {
  font-size: .45em;
  font-weight: 400;
  font-style: italic;
  color: var(--text-muted);
  letter-spacing: 0;
  align-self: center;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-muted);
  max-width: 50ch;
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.hero-easter-egg {
  font-size: .85rem;
  color: var(--text-faint);
}

.hero-easter-egg strong {
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: 3px;
  font-weight: 600;
  font-size: .95rem;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
}

.btn:hover { }
.btn:active { }

.btn-primary {
  background: var(--color-green);
  color: #fff;
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--color-green) 85%, #000);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--text);
}

/* ============================================================
   TIMELINE
   ============================================================ */
.section-journey {
  padding: var(--space-3xl) 0;
  background: var(--bg-alt);
  position: relative;
}

.section-journey .section-inner {
  margin-bottom: var(--space-2xl);
}

.timeline {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.timeline-track {
  position: absolute;
  left: 50%;
  top: 0;
  width: 60px;
  height: 100%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
  overflow: visible;
}

.timeline-stop {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 56px 1fr;
  align-items: start;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
  z-index: 1;
}

.timeline-stop[data-side="left"] .stop-marker  { grid-column: 2; grid-row: 1; }
.timeline-stop[data-side="left"] .stop-content { grid-column: 1; grid-row: 1; text-align: right; }
.timeline-stop[data-side="left"] .stop-details-body ul { text-align: left; }
.timeline-stop[data-side="left"] .stop-link-row { justify-content: flex-end; }

.timeline-stop[data-side="right"] .stop-marker  { grid-column: 2; grid-row: 1; }
.timeline-stop[data-side="right"] .stop-content { grid-column: 3; grid-row: 1; }

.stop-marker {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 2px;
}

.stop-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 1.1rem;
  position: relative;
  z-index: 1;
  transition: border-color var(--transition-mid);
}

.timeline-stop:hover .stop-icon,
.timeline-stop--current .stop-icon {
  border-color: var(--color-green);
}

.timeline-stop--current .stop-icon {
  border-color: var(--color-orange);
  background: color-mix(in srgb, var(--color-orange) 6%, var(--bg));
}

.stop-year {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-green);
  margin-bottom: var(--space-xs);
}

.stop-current-badge {
  display: inline-block;
  background: var(--color-orange);
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 2px;
  margin-bottom: var(--space-sm);
}

.stop-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--text);
}

.stop-desc {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.stop-details {
  margin-top: var(--space-md);
}

.stop-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-green);
  cursor: pointer;
  list-style: none;
  padding: 0;
  transition: color var(--transition-fast);
}

.stop-toggle::-webkit-details-marker { display: none; }
.stop-toggle::marker { content: none; }

.stop-toggle svg {
  transition: transform var(--transition-mid);
}

details[open] .stop-toggle svg {
  transform: rotate(180deg);
}

.stop-details-body {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  animation: fade-in .2s ease;
}

.stop-details-body ul {
  padding-left: var(--space-md);
  list-style: disc;
  color: var(--text-muted);
  font-size: .875rem;
  line-height: 1.7;
}

.stop-details-body ul li + li { margin-top: var(--space-xs); }

.stop-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-green);
  text-decoration: underline;
  text-decoration-color: transparent;
  margin-top: var(--space-md);
  transition: text-decoration-color var(--transition-fast), color var(--transition-fast);
}

.stop-link:hover {
  text-decoration-color: currentColor;
}

.stop-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* Mobile timeline: single column */
@media (max-width: 640px) {
  .timeline { padding: 0 var(--space-md); }
  .timeline-track { display: none; }

  .timeline-stop {
    grid-template-columns: 44px 1fr;
    grid-template-rows: auto;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
  }

  .timeline-stop[data-side="left"] .stop-marker,
  .timeline-stop[data-side="right"] .stop-marker { grid-column: 1; grid-row: 1; }

  .timeline-stop[data-side="left"] .stop-content,
  .timeline-stop[data-side="right"] .stop-content {
    grid-column: 2; grid-row: 1;
    text-align: left;
  }

  .timeline-stop[data-side="left"] .stop-link-row { justify-content: flex-start; }
}

/* ============================================================
   PROJECTS
   ============================================================ */
.section-projects {
  padding: var(--space-3xl) 0;
}

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

.projects-filter {
  max-width: var(--max-w);
  margin: 0 auto var(--space-xl);
  padding: 0 var(--space-xl);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-sm) var(--space-md);
  border-radius: 3px;
  font-size: .85rem;
  font-weight: 600;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.filter-btn:hover {
  background: var(--surface-2);
  color: var(--text);
}

.filter-btn--active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.filter-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.projects-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  transition: border-color var(--transition-mid), opacity var(--transition-mid);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--text-muted);
}

.project-card.is-hidden {
  display: none;
}

.card-line {
  height: 4px;
  width: 100%;
  flex-shrink: 0;
}

.card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}

.card-year {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--text-faint);
}

.card-category {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.35;
}

.card-desc {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--space-md);
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 2px;
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .03em;
  background: transparent;
  color: var(--text-faint);
  border: 1px solid var(--border);
}

.card-details summary { list-style: none; }
.card-details summary::-webkit-details-marker { display: none; }

.card-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.card-toggle:hover { color: var(--text); }

.card-toggle svg {
  transition: transform var(--transition-mid);
}

details[open] .card-toggle svg { transform: rotate(180deg); }

.card-details-body {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  animation: fade-in .2s ease;
}

.card-details-body ul {
  list-style: disc;
  padding-left: var(--space-md);
  color: var(--text-muted);
  font-size: .85rem;
  line-height: 1.65;
  margin-bottom: var(--space-md);
}

.card-details-body ul li + li { margin-top: 6px; }

.card-link {
  display: inline-flex;
  align-items: center;
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-green);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color var(--transition-fast);
}

.card-link:hover { text-decoration-color: currentColor; }

@media (max-width: 640px) {
  .projects-grid { grid-template-columns: 1fr; padding: 0 var(--space-md); }
  .projects-filter { padding: 0 var(--space-md); }
}

/* ============================================================
   SKILLS
   ============================================================ */
.section-skills {
  padding: var(--space-3xl) 0;
  background: var(--bg-alt);
}

.section-skills .section-inner {
  margin-bottom: var(--space-2xl);
}

.skills-map {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.skills-lines {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.skill-line {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: 2px;
  padding: var(--space-lg) var(--space-xl);
}

.skill-line:hover {
  border-color: var(--border);
}

.skill-line-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.skill-line-color {
  width: 32px;
  height: 6px;
  border-radius: 3px;
  flex-shrink: 0;
}

.skill-line-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.skill-stations {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  position: relative;
}

/* Transit map connecting line behind stations */
.skill-stations::before {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  top: 12px;
  height: 2px;
  background: var(--border);
  pointer-events: none;
  z-index: 0;
}

.skill-station {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: var(--space-xs) var(--space-md);
  font-size: .82rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
  transition: color var(--transition-fast);
}

.skill-station:hover {
  color: var(--text);
}

.station-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .skills-map { padding: 0 var(--space-md); }
  .skill-line { padding: var(--space-md); }
  .skill-stations::before { display: none; }
}

/* ============================================================
   WHY TRANSIT
   ============================================================ */
.section-why {
  padding: var(--space-3xl) 0;
}

.pull-quote {
  border-left: 3px solid var(--color-green);
  padding: var(--space-md) var(--space-xl);
  margin: var(--space-2xl) 0;
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text-muted);
  line-height: 1.65;
  background: transparent;
  border-radius: 0;
}

.pull-quote cite {
  display: block;
  margin-top: var(--space-sm);
  font-style: normal;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-faint);
}

.essay {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
}

.essay p + p { margin-top: var(--space-lg); }

.essay em { color: var(--text); font-style: italic; }

.why-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.why-expand {
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--surface);
  overflow: hidden;
}

.why-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: background var(--transition-fast);
  width: 100%;
}

.why-toggle::-webkit-details-marker { display: none; }
.why-toggle::marker { content: none; }
.why-toggle:hover { background: var(--surface-2); }

.why-toggle svg { transition: transform var(--transition-mid); flex-shrink: 0; }
details[open] .why-toggle svg { transform: rotate(180deg); }

.why-expand-body {
  padding: var(--space-lg);
  padding-top: 0;
  border-top: 1px solid var(--border);
  animation: fade-in .2s ease;
}

.why-expand-body p,
.why-expand-body ul {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.why-expand-body ul {
  list-style: disc;
  padding-left: var(--space-md);
}

.why-expand-body ul li + li { margin-top: var(--space-sm); }

.why-expand-body p { padding-top: var(--space-md); }

/* ============================================================
   CONTACT
   ============================================================ */
.section-contact {
  padding: var(--space-3xl) 0;
  background: var(--bg);
}

.contact-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.contact-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 2px;
  text-decoration: none;
  color: var(--text);
  transition: border-color var(--transition-fast);
}

.contact-card:hover {
  border-color: var(--color-green);
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 2px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 2px;
}

.contact-value {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
}

.apply-note {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--color-green);
  border-radius: 0;
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.apply-icon { font-size: 1.25rem; flex-shrink: 0; margin-top: 1px; }

.apply-note code {
  font-family: var(--font-mono);
  font-size: .85em;
  background: color-mix(in srgb, var(--color-green) 15%, var(--bg));
  color: var(--color-green);
  padding: 1px 6px;
  border-radius: 4px;
}

@media (max-width: 640px) {
  .contact-actions { grid-template-columns: 1fr; }
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-xl);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: center;
}

.footer-text {
  font-size: .85rem;
  color: var(--text-faint);
}

.footer-top-link {
  color: var(--color-green);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color var(--transition-fast);
}

.footer-top-link:hover { text-decoration-color: currentColor; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Scroll-reveal: elements start invisible, JS adds .is-visible */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}

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

/* Stagger delays for grid children */
.projects-grid .project-card:nth-child(2) { transition-delay: .05s; }
.projects-grid .project-card:nth-child(3) { transition-delay: .10s; }
.projects-grid .project-card:nth-child(4) { transition-delay: .15s; }
.projects-grid .project-card:nth-child(5) { transition-delay: .20s; }
.projects-grid .project-card:nth-child(6) { transition-delay: .25s; }
.projects-grid .project-card:nth-child(7) { transition-delay: .30s; }
.projects-grid .project-card:nth-child(8) { transition-delay: .35s; }
.projects-grid .project-card:nth-child(9) { transition-delay: .40s; }

.skills-lines .skill-line:nth-child(2) { transition-delay: .07s; }
.skills-lines .skill-line:nth-child(3) { transition-delay: .14s; }
.skills-lines .skill-line:nth-child(4) { transition-delay: .21s; }
.skills-lines .skill-line:nth-child(5) { transition-delay: .28s; }

.timeline-stop:nth-child(odd)  { transition-delay: .05s; }
.timeline-stop:nth-child(even) { transition-delay: .10s; }