/* ==========================================================================
   Design tokens — "Pit Wall" theme
   ========================================================================== */
:root {
  --bg: #0b0d10;
  --bg-raised: rgba(255, 255, 255, 0.02);
  --fg: #e9edf1;
  --text-body: #b7c0c9;
  --muted: #96a1ad;
  --muted-2: #757f8c;
  --accent: #63c3e9;
  --accent-bright: #a3ddf5;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --font-sans: 'Space Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --container: 1240px;
}

/* ==========================================================================
   Cross-document view transitions (progressive enhancement — unsupported
   browsers just get an instant navigation, same as before). Disabled under
   reduced motion since browser-default handling of that isn't guaranteed.
   ========================================================================== */
@media not (prefers-reduced-motion: reduce) {
  @view-transition {
    navigation: auto;
  }
  ::view-transition-group(root) {
    animation-duration: 220ms;
  }
}

/* ==========================================================================
   Reset
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 32px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--bg);
  padding: 12px 16px;
  z-index: 1000;
  font-weight: 600;
}
.skip-link:focus { left: 24px; top: 24px; }

.dot { color: var(--accent); }

.unit { font-size: 1rem; font-weight: 500; color: var(--muted); margin-left: 2px; }
.unit-accent { color: var(--accent); }

/* ==========================================================================
   Background texture
   ========================================================================== */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(99, 195, 233, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 195, 233, 0.045) 1px, transparent 1px),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.012) 0 2px, transparent 2px 4px);
  background-size: 72px 72px, 72px 72px, 6px 6px;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(99, 195, 233, 0.35); }
  50% { box-shadow: 0 0 0 6px rgba(99, 195, 233, 0); }
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(11, 13, 16, 0.8);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
}
.logo-mark { width: 26px; height: 26px; object-fit: contain; }
.logo-text {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.14em;
}

.site-nav { display: flex; align-items: center; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s ease;
}
.nav-menu a:hover,
.nav-menu a:focus-visible { color: var(--fg); }
.nav-menu a.is-active:not(.nav-contact) { color: var(--accent); }

.nav-menu a.nav-contact {
  background: var(--accent);
  color: var(--bg);
  padding: 9px 16px;
  border-radius: 3px;
  font-weight: 700;
  transition: background 0.2s ease;
}
.nav-menu a.nav-contact:hover,
.nav-menu a.nav-contact:focus-visible { background: var(--accent-bright); color: var(--bg); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin-inline: auto;
  background: var(--fg);
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  padding: 110px 32px 72px;
  position: relative;
}

.availability {
  margin: 0 0 28px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(99, 195, 233, 0.35);
  padding: 8px 14px;
  border-radius: 999px;
}
.availability-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.98;
  max-width: 900px;
}

.hero-role {
  margin: 24px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 1.6vw, 1.05rem);
  color: var(--muted);
  letter-spacing: 0.04em;
}

.hero-tagline {
  margin: 28px 0 44px;
  max-width: 560px;
  color: var(--text-body);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-watermark {
  position: absolute;
  top: 40px;
  right: -40px;
  width: 560px;
  height: 560px;
  max-width: 45vw;
  max-height: 45vw;
  object-fit: contain;
  opacity: 0.1;
  pointer-events: none;
}
@media (max-width: 900px) {
  .hero-watermark { display: none; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover { background: var(--accent-bright); color: var(--bg); }
.btn-primary:focus-visible { outline-color: var(--fg); }

.btn-ghost { border-color: rgba(255, 255, 255, 0.2); color: var(--fg); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-outline {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  border-color: rgba(99, 195, 233, 0.5);
  color: var(--accent);
  padding: 10px 18px;
  min-height: 44px;
  box-sizing: border-box;
  white-space: nowrap;
}
.btn-outline:hover { background: rgba(99, 195, 233, 0.12); color: var(--accent); }

/* Telemetry strip */
.telemetry {
  border-top: 1px solid var(--border);
  background: var(--bg-raised);
}
.telemetry-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.telemetry-stat { padding: 28px 32px; border-right: 1px solid var(--border); }
.telemetry-stat:first-child { padding-left: 0; }
.telemetry-stat:last-child { padding-right: 0; border-right: none; }
.telemetry-stat dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 10px;
}
.telemetry-stat dd {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--fg);
}

/* ==========================================================================
   Shared section header
   ========================================================================== */
.section .container { padding-top: 88px; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 20px;
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 16px;
  margin-bottom: 48px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ==========================================================================
   About
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 72px;
  align-items: start;
}

.about-bio p { margin: 0 0 20px; color: var(--text-body); font-size: 1.05rem; }
.about-bio p:last-child { margin-bottom: 0; }

.about-pillars li {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 16px;
  margin: 0 -16px;
  border-bottom: 1px solid var(--border);
  border-radius: 4px;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.about-pillars li:last-child { border-bottom: none; }
.about-pillars li:hover {
  background: rgba(99, 195, 233, 0.04);
  border-color: rgba(99, 195, 233, 0.3);
  transform: translateX(4px);
}

.about-pillars h3 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.about-pillars p { color: var(--muted); font-size: 0.92rem; }

/* ==========================================================================
   Featured Project
   ========================================================================== */
.fig-caption {
  margin: 12px 0 48px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.project-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 72px;
  align-items: start;
}

.project-body p { margin: 0 0 28px; color: var(--text-body); font-size: 1.05rem; }

.project-highlights li {
  position: relative;
  padding-left: 24px;
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 14px;
}
.project-highlights li:last-child { margin-bottom: 0; }
.project-highlights li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  transform: rotate(45deg);
}

.project-panel {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: var(--bg-raised);
}

.project-stat {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  row-gap: 4px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.project-stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
  white-space: nowrap;
}

.project-stat-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--fg);
  margin-left: auto;
}
.project-stat-value .unit { font-size: 0.85rem; }

.project-award {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
}
.project-award-mark {
  width: 10px;
  height: 10px;
  min-width: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 195, 233, 0.2);
}
.project-award span:last-child { font-weight: 600; font-size: 0.92rem; }

/* ==========================================================================
   Image placeholders (swap for real <img> tags once photos are available)
   ========================================================================== */
.img-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px dashed var(--border-strong);
  border-radius: 6px;
  background: var(--bg-raised);
  color: var(--muted-2);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  padding: 24px;
}
.img-slot-hero { width: 100%; aspect-ratio: 1240 / 480; }
.img-slot-gallery { width: 100%; aspect-ratio: 494 / 300; }

/* Real photos — same box sizes as the placeholders above, once a photo exists */
.case-photo {
  width: 100%;
  display: block;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.case-photo-case { aspect-ratio: 1240 / 480; height: auto; }
.case-photo-case-detail { aspect-ratio: 488 / 300; height: auto; }

/* For photos whose aspect ratio doesn't suit a wide crop (e.g. near-square flat-lays) —
   shows the whole image, no cropping, sized down if needed rather than force-filled. */
.case-photo-uncropped {
  height: auto;
  max-height: 640px;
  width: auto;
  max-width: 100%;
  margin-inline: auto;
  object-fit: contain;
}

/* ==========================================================================
   Gallery
   ========================================================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.gallery-grid .img-slot-link { transition: transform 0.3s ease, border-color 0.2s ease; }
.gallery-grid .img-slot-link:hover,
.gallery-grid .img-slot-link:focus-visible { transform: scale(1.03); }

.gallery-grid figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-2);
}

/* ==========================================================================
   Experience timeline
   ========================================================================== */
.timeline { max-width: 860px; }

.timeline-more {
  display: inline-block;
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  transition: color 0.2s ease;
}
.timeline-more:hover,
.timeline-more:focus-visible { color: var(--accent-bright); }

.timeline li {
  display: grid;
  grid-template-columns: 140px 24px minmax(0, 1fr);
  gap: 0 20px;
  padding-bottom: 44px;
  position: relative;
}
.timeline li.timeline-last { padding-bottom: 0; }

.timeline li:hover .timeline-body h3 { color: var(--accent); }

.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
  padding-top: 3px;
}

.timeline-marker {
  position: relative;
  display: flex;
  justify-content: center;
}
.timeline-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  box-sizing: border-box;
  background: var(--bg);
  margin-top: 6px;
  z-index: 1;
}
.timeline-dot-filled {
  border: none;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 195, 233, 0.2);
  animation: timeline-pulse 2.4s ease-in-out infinite;
}
.timeline-dot-muted { border-color: rgba(255, 255, 255, 0.3); }

@keyframes timeline-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(99, 195, 233, 0.25); }
  50% { box-shadow: 0 0 0 8px rgba(99, 195, 233, 0); }
}

.timeline li:not(.timeline-last) .timeline-marker::after {
  content: '';
  position: absolute;
  top: 18px;
  bottom: -44px;
  width: 1px;
  background: var(--border-strong);
}

.timeline-body { overflow-wrap: break-word; }
.timeline-body h3 { margin: 0 0 6px; font-size: 1.1rem; font-weight: 700; transition: color 0.2s ease; }
.timeline-body p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* ==========================================================================
   Publications
   ========================================================================== */
.publication-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  padding: 28px 32px;
  background: var(--bg-raised);
  max-width: 980px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.publication-card:hover {
  transform: translateY(-3px);
  border-color: rgba(99, 195, 233, 0.35);
}
.publication-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.publication-card h3 { margin: 12px 0 10px; font-size: 1.25rem; font-weight: 700; }
.publication-card p { margin: 0; color: var(--muted); font-size: 0.95rem; max-width: 640px; }

/* ==========================================================================
   Skills
   ========================================================================== */
.skills-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 72px;
}
.skills-list li {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 16px;
  margin: 0 -16px;
  border-bottom: 1px solid var(--border);
  border-radius: 4px;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.skills-list li:hover {
  background: rgba(99, 195, 233, 0.04);
  border-color: rgba(99, 195, 233, 0.3);
  transform: translateX(4px);
}
.skills-list h3 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--fg);
}
.skills-list p { color: var(--muted); font-size: 0.9rem; }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact .container { padding: 110px 32px 120px; }

.contact-inner { text-align: center; }
.contact-inner .section-title { font-size: clamp(2.2rem, 5vw, 3.6rem); margin-bottom: 20px; }

.contact-eyebrow {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.contact-tagline {
  margin: 0 auto 40px;
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 520px;
}

.contact-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}
.contact-actions .btn { font-family: var(--font-mono); font-size: 1rem; padding: 15px 30px; }
.contact-actions .btn-primary { font-weight: 700; }
.contact-actions .btn-ghost { font-weight: 500; }

/* ==========================================================================
   Back to top
   ========================================================================== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  background: var(--bg-raised);
  color: var(--accent);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  z-index: 90;
}
.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover,
.back-to-top:focus-visible {
  border-color: rgba(99, 195, 233, 0.5);
  background: rgba(99, 195, 233, 0.08);
}

@media (max-width: 720px) {
  .back-to-top { right: 16px; bottom: 16px; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { border-top: 1px solid var(--border); }
.footer-inner {
  padding: 24px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-inner p {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted-2);
}

/* ==========================================================================
   Scroll reveal (JS toggles [data-hidden]; respects prefers-reduced-motion)
   ========================================================================== */
[data-reveal][data-hidden] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

/* Per-item stagger for list-based sections (About pillars, Skills, Experience
   timeline, project card grids). JS assigns --i per child and toggles
   [data-hidden]; mirrors the [data-reveal] pattern above one level down. */
[data-stagger-item] {
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: calc(min(var(--i, 0), 5) * 80ms);
}
[data-stagger-item][data-hidden] {
  opacity: 0;
  transform: translateY(16px);
}

/* ==========================================================================
   Case study / project hub pages
   ========================================================================== */
.case-hero .container { padding-top: 72px; padding-bottom: 0; }
.case-hero-compact .container { padding-bottom: 56px; }

.case-eyebrow {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
.case-eyebrow-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.25);
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}
.case-eyebrow-link:hover, .case-eyebrow-link:focus-visible { color: var(--accent-bright); }

.case-title {
  margin: 0 0 16px;
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}
.case-title-sm { font-size: clamp(2.4rem, 5vw, 3.8rem); line-height: 1.02; }

.case-lede {
  margin: 0 0 40px;
  max-width: 640px;
  color: var(--text-body);
  font-size: 1.1rem;
}

.case-status {
  display: inline-flex;
  align-items: center;
  margin: -20px 0 40px;
  padding: 6px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.img-slot-case { width: 100%; aspect-ratio: 1240 / 480; }
.img-slot-case-compact { width: 100%; aspect-ratio: 1176 / 420; }
.img-slot-case-detail { width: 100%; aspect-ratio: 488 / 300; }
.img-slot-feature { width: 100%; aspect-ratio: 534 / 280; }
.img-slot-card { width: 100%; aspect-ratio: 374 / 190; }

.case-hero .fig-caption,
.case-hero-compact .fig-caption { margin-bottom: 0; }

.case-stat-bar { border-top: 1px solid var(--border); background: var(--bg-raised); margin-top: 40px; }
.case-stat-bar-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.case-stat-bar-3 { grid-template-columns: repeat(3, 1fr); }
.case-stat { padding: 24px 28px; border-right: 1px solid var(--border); }
.case-stat:first-child { padding-left: 0; }
.case-stat:last-child { padding-right: 0; border-right: none; }
.case-stat dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 8px;
}
.case-stat dd { font-family: var(--font-mono); font-size: 1.05rem; font-weight: 700; color: var(--fg); }
.case-stat-accent { color: var(--accent); }

.case-section .container,
.project-group .container { padding-top: 80px; padding-bottom: 0; }
.case-section-last .container { padding-bottom: 110px; }

.section-head,
.case-section-head,
.project-group-head {
  display: flex;
  align-items: baseline;
  gap: 20px;
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 16px;
}
.case-section-head,
.project-group-head { margin-bottom: 44px; }

.case-number {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.project-group-role {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.case-cols-wide { grid-template-columns: 1.3fr 1fr; gap: 72px; }
.case-prose p { margin: 0; color: var(--text-body); font-size: 1.05rem; }
.case-prose p a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.case-prose .project-award { padding: 16px 20px; margin-top: 24px; border: 1px solid rgba(99, 195, 233, 0.4); border-radius: 4px; background: rgba(99, 195, 233, 0.06); }
.case-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.case-scope-card {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: var(--bg-raised);
  padding: 24px 28px;
}
.case-scope-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.case-scope-list { margin: 16px 0 0; display: flex; flex-direction: column; gap: 12px; }
.case-scope-list li { position: relative; padding-left: 22px; color: var(--muted); font-size: 0.95rem; }
.case-scope-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  transform: rotate(45deg);
}

.result-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; margin-bottom: 48px; }
.result-card { border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 6px; background: var(--bg-raised); padding: 28px; }
.result-card-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.result-card-value { margin-top: 12px; font-family: var(--font-mono); font-size: 2rem; font-weight: 700; }
.result-card-value-sm { font-size: 1.3rem; line-height: 1.35; }
.result-card-highlight { border-color: rgba(99, 195, 233, 0.4); background: rgba(99, 195, 233, 0.06); }
.result-card-highlight .result-card-label { color: var(--accent); }

/* Generational comparison (dumbbell small multiples) — PIII (muted, context) vs
   PIV (accent, the point). One legend for the set; per-tile SVG is decorative
   (aria-hidden) since every value is already a direct text label. */
.compare-legend {
  display: flex;
  gap: 24px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}
.compare-legend-item { display: inline-flex; align-items: center; gap: 8px; }
.compare-legend-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex: none; }
.compare-legend-dot-before { background: var(--muted); }
.compare-legend-dot-after { background: var(--accent); }

.compare-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; margin-bottom: 48px; }
.compare-tile { border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 6px; background: var(--bg-raised); padding: 24px 28px; }
.compare-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.compare-chart { display: block; width: 100%; height: auto; margin: 18px 0 14px; overflow: visible; }
.compare-track { stroke: var(--border); stroke-width: 1.5; }
.compare-connector { stroke: var(--border-strong); stroke-width: 2; stroke-linecap: round; }
.compare-dot { stroke: var(--bg); stroke-width: 2; }
.compare-dot-before { fill: var(--muted); }
.compare-dot-after { fill: var(--accent); }

.compare-values { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; font-family: var(--font-mono); }
.compare-value-before { color: var(--muted); font-size: 0.92rem; text-decoration: line-through; text-decoration-color: rgba(150, 161, 173, 0.5); }
.compare-arrow { color: var(--muted-2); font-size: 0.85rem; }
.compare-value-after { color: var(--fg); font-size: 1.15rem; font-weight: 700; }
.compare-delta {
  margin-left: auto;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid rgba(99, 195, 233, 0.4);
  background: rgba(99, 195, 233, 0.1);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
}

.case-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
  margin-top: 48px;
}
.case-nav-back { font-family: var(--font-mono); font-size: 0.85rem; color: var(--muted); transition: color 0.2s ease; }
.case-nav-back:hover, .case-nav-back:focus-visible { color: var(--accent); }
.case-nav-next { font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent); transition: color 0.2s ease; }
.case-nav-next:hover, .case-nav-next:focus-visible { color: var(--accent-bright); }

/* Project hub */
.project-feature-card {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-raised);
  transition: border-color 0.2s ease;
}
.project-feature-card:hover,
.project-feature-card:focus-visible { border-color: rgba(99, 195, 233, 0.5); }
.project-feature-card .img-slot,
.project-feature-card .case-photo { border-radius: 0; border: none; transition: transform 0.3s ease; }
.project-feature-card:hover .img-slot,
.project-feature-card:focus-visible .img-slot,
.project-feature-card:hover .case-photo,
.project-feature-card:focus-visible .case-photo { transform: scale(1.03); }
.project-feature-body { padding: 32px 36px; display: flex; flex-direction: column; justify-content: center; overflow: hidden; }
.project-feature-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.project-feature-body h3 { margin: 12px 0 10px; font-size: 1.5rem; font-weight: 700; }
.project-feature-body p { margin: 0 0 18px; color: var(--muted); font-size: 0.95rem; }
.project-feature-link { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.06em; color: var(--accent); }

.project-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.project-card {
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-raised);
  transition: border-color 0.2s ease;
}
.project-card:hover,
.project-card:focus-visible { border-color: rgba(99, 195, 233, 0.5); }
.project-card .img-slot,
.project-card .case-photo { border-radius: 0; border: none; transition: transform 0.3s ease; }
.project-card:hover .img-slot,
.project-card:focus-visible .img-slot,
.project-card:hover .case-photo,
.project-card:focus-visible .case-photo { transform: scale(1.03); }
.project-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.project-card-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.project-card-body h3 { margin: 10px 0 8px; font-size: 1.15rem; font-weight: 700; }
.project-card-body p { margin: 0 0 16px; color: var(--muted); font-size: 0.9rem; flex: 1; }
.project-card-link { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.06em; color: var(--accent); }

.project-feature-card:focus-visible,
.project-card:focus-visible,
.img-slot-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.img-slot-link { cursor: pointer; transition: border-color 0.2s ease; }
.img-slot-link:hover { border-color: rgba(99, 195, 233, 0.5); }

.project-panel .project-case-link {
  display: flex;
  width: calc(100% - 48px);
  margin: 0 24px 24px;
}

.footer-home-link { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted-2); transition: color 0.2s ease; }
.footer-home-link:hover, .footer-home-link:focus-visible { color: var(--accent); }

/* ==========================================================================
   Responsive
   ========================================================================== */
/* Logo + all 7 nav items need ~823px to sit inline without overlap
   (measured); switch to the hamburger well above that threshold. */
@media (max-width: 960px) {
  .nav-toggle { display: flex; }

  .nav-menu {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav-menu.is-open { max-height: 480px; }
  .nav-menu li { width: 100%; }
  .nav-menu a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 12px 24px;
    width: 100%;
    box-sizing: border-box;
    border-bottom: 1px solid var(--border);
    border-radius: 0 !important;
  }
  .nav-menu a.nav-contact { background: none; color: var(--accent); }
}

@media (max-width: 720px) {
  .telemetry-inner,
  .case-stat-bar-inner,
  .case-stat-bar-3 { grid-template-columns: 1fr; }
  .telemetry-stat,
  .case-stat { border-right: none !important; border-bottom: 1px solid var(--border); padding: 20px 0 !important; }
  .telemetry-stat:last-child,
  .case-stat:last-child { border-bottom: none; }
}

@media (max-width: 860px) {
  .about-grid,
  .project-grid,
  .case-cols,
  .case-cols-wide { grid-template-columns: 1fr; gap: 40px; }
  .gallery-grid { grid-template-columns: 1fr; }
  .skills-list { grid-template-columns: 1fr; }
  .publication-card { grid-template-columns: 1fr; }
  .timeline li { grid-template-columns: 100px 20px minmax(0, 1fr); }
  .project-feature-card { grid-template-columns: 1fr; }
  .project-card-grid { grid-template-columns: 1fr; }
  .project-group-head,
  .case-section-head { flex-wrap: wrap; }
  .project-group-role { margin-left: 0; }
}

@media (max-width: 480px) {
  .about-pillars li,
  .skills-list li { grid-template-columns: 1fr; gap: 6px; }
}

/* ==========================================================================
   Reduced motion — the JS-driven scroll-reveal and counters already check
   prefers-reduced-motion before running; this covers the CSS-only motion
   (pulse, hover/focus transitions, smooth-scroll, mobile-menu transition)
   that has no JS gate.
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .availability-dot,
  .timeline-dot-filled { animation: none; }

  .btn,
  .nav-menu a,
  .nav-menu,
  .about-pillars li,
  .skills-list li,
  .publication-card,
  .gallery-grid .img-slot-link,
  .timeline-body h3,
  .back-to-top { transition: none; }
}