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

/* ── Tokens ─────────────────────────────────────────── */
:root {
  --navy-900:  #05101e;
  --navy-800:  #0a1a35;
  --navy-700:  #0d1f3f;
  --navy-600:  #152648;
  --steel-500: #3d5a80;
  --steel-400: #4e6f99;
  --steel-300: #8aa3be;
  --steel-200: #b6c9db;
  --steel-100: #dce7f0;
  --white:     #ffffff;
  --off-white: #f4f7fa;
  --text:      #0d1f3f;
  --text-muted:#4a6080;
  --accent:    #2e5fa3;
  --accent-h:  #254f8e;

  --font-head: 'Barlow Condensed', sans-serif;
  --font-body: 'Inter', sans-serif;

  --max-w:  1160px;
  --pad-x:  clamp(1.5rem, 5vw, 5rem);
}

/* ── Base ────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Progress Bar ────────────────────────────────────── */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  z-index: 200;
  transition: width 0.08s linear;
  pointer-events: none;
}

/* ── Nav ─────────────────────────────────────────────── */
#nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 1.5rem var(--pad-x);
  transition: background 0.35s ease, box-shadow 0.35s ease;
}

#nav.scrolled {
  background: rgba(5, 16, 30, 1);
  backdrop-filter: blur(8px);
}

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

.nav-logo { text-decoration: none; }

.nav-logo-img {
  height: 36px;
  width: auto;
  display: block;
  border-radius: 6px;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-family: var(--font-head);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color 0.3s ease, transform 0.4s cubic-bezier(0.34, 1.3, 0.64, 1), letter-spacing 0.3s ease;
  position: relative;
  padding-bottom: 4px;
  display: inline-block;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
  transform: translateY(-4px) scale(1.08);
  letter-spacing: 0.18em;
}

.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

/* Contact CTA emphasis */
.nav-contact {
  border: 1px solid rgba(212, 175, 55, 0.45);
  padding: 0.3rem 0.9rem 0.35rem;
  color: #d4af37 !important;
  transition: color 0.3s ease, transform 0.4s cubic-bezier(0.34, 1.3, 0.64, 1),
              letter-spacing 0.3s ease, border-color 0.3s ease;
}

.nav-contact:hover {
  border-color: rgba(212, 175, 55, 0.8) !important;
  color: #e8c84a !important;
}

.nav-contact::after { display: none; }

/* ── Hero ────────────────────────────────────────────── */
#hero {
  user-select: none;
  -webkit-user-select: none;
  min-height: 100vh;
  background-color: var(--navy-900);
  background-image:
    linear-gradient(rgba(78, 111, 153, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(78, 111, 153, 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(6rem, 12vh, 9rem) var(--pad-x) clamp(4.5rem, 10vh, 7rem);
  position: relative;
}

.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}

/* Hero entrance animations */
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: none; }
}

.hero-overline { animation: heroFadeUp 0.6s ease 0.15s both; }
.hero-name     { animation: heroFadeUp 0.7s ease 0.3s  both; }
.hero-tagline  { animation: heroFadeUp 0.6s ease 0.5s  both; }
.hero-ctas     { animation: heroFadeUp 0.6s ease 0.65s both; }
.hero-stats    { animation: heroFadeUp 0.6s ease 0.82s both; }

.hero-overline {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel-300);
  margin-bottom: 1.25rem;
}

.hero-name {
  font-family: var(--font-head);
  font-size: clamp(3.6rem, min(10.5vw, 17vh), 8.75rem);
  font-weight: 700;
  line-height: 0.88;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1.4rem;
}

.hero-tagline {
  font-size: clamp(0.85rem, 1.4vw, 1rem);
  font-weight: 300;
  letter-spacing: 0.03em;
  color: var(--steel-200);
  margin-bottom: 2.4rem;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: flex-start;
}

/* Hero stats */
.hero-stats {
  display: flex;
  gap: 2.75rem;
  margin-top: 3.25rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.hero-stat-num {
  font-family: var(--font-head);
  font-size: clamp(1.3rem, 2.8vw, 1.75rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.01em;
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 0.35em;
}

.hero-stat-icon {
  height: 1em;
  width: 1em;
  border-radius: 3px;
  flex-shrink: 0;
}

.hero-stat-label {
  font-family: var(--font-head);
  font-size: 0.67rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel-400);
}

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.72rem 1.8rem;
  display: inline-block;
  transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover { background: var(--accent-h); }

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: rgba(255, 255, 255, 0.75);
}
.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--white);
}

/* scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: clamp(2rem, 4vh, 3.5rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  animation: heroFadeUp 0.7s ease 1.4s both;
  transition: opacity 0.5s ease;
  cursor: pointer;
}

.scroll-label {
  font-family: var(--font-head);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(182, 201, 219, 0.45);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(182, 201, 219, 0.35), rgba(182, 201, 219, 0.05));
  position: relative;
  animation: scrollDrop 2s ease-in-out infinite;
}

.scroll-line::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid rgba(182, 201, 219, 0.4);
  border-bottom: 1.5px solid rgba(182, 201, 219, 0.4);
  transform: translateX(-50%) rotate(45deg);
}

@keyframes scrollDrop {
  0%, 100% { transform: translateY(0); opacity: 0.7; }
  50%       { transform: translateY(6px); opacity: 1; }
}

/* ── Section commons ─────────────────────────────────── */
section {
  padding: clamp(1.75rem, 4vh, 4rem) var(--pad-x);
  scroll-margin-top: 84px;
}

.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  margin-bottom: clamp(1.25rem, 2.5vh, 2.5rem);
}

.section-num {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--steel-400);
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 4.8vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  line-height: 1;
  color: var(--text);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 2.5rem;
  height: 2px;
  background: var(--accent);
  margin-top: 0.65rem;
}

/* ── Reveal animation ────────────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal].visible {
  opacity: 1;
  transform: none;
}

/* ── About ───────────────────────────────────────────── */
#about { background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 180px 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-photo-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.about-photo {
  width: 180px;
  height: auto;
  border: 2px solid var(--steel-200);
  display: block;
  transition: transform 0.35s ease, border-color 0.35s ease;
}

.about-photo:hover {
  transform: scale(1.02);
  border-color: var(--accent);
}

.about-photo-name {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text);
  text-align: center;
}

.about-photo-title {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel-400);
  text-align: center;
}

.about-bio p {
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.65;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.about-bio p:last-child { margin-bottom: 0; }

.about-creds {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding-left: 2.5rem;
  border-left: 2px solid var(--accent);
}

.cred { display: flex; flex-direction: column; gap: 0.25rem; }

.cred-label {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel-400);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(46, 95, 163, 0.2);
  margin-bottom: 0.25rem;
}

.cred-value {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text);
}

.cred-sub {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text-muted);
}

.exp-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 0.4rem;
}

.exp-entry {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.exp-year {
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.exp-title {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text);
}

.exp-org {
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--text-muted);
}

/* About tools */
.about-tools {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--steel-100);
}

.tools-label {
  font-family: var(--font-head);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel-400);
  display: block;
  margin-bottom: 0.9rem;
}

.tools-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tool-pill {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  background: var(--off-white);
  border: 1px solid var(--steel-100);
  padding: 0.32rem 0.75rem;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  cursor: default;
}

.tool-pill:hover {
  background: var(--steel-100);
  border-color: var(--steel-300);
  color: var(--accent);
}

/* ── Projects ────────────────────────────────────────── */
#projects {
  background: var(--off-white);
  padding-bottom: clamp(3.5rem, 8vh, 6rem);
}

.projects-wrap {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.proj-group-label {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel-400);
  margin-bottom: 0.85rem;
}

.proj-group-sep {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0;
}

.proj-group-sep-line {
  flex: 1;
  height: 1px;
  background: var(--steel-200);
}

.proj-group-sep-label {
  font-family: var(--font-head);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel-400);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.proj-group-sep-arrow {
  display: inline-block;
  animation: sepBounce 1.8s ease-in-out infinite;
}

@keyframes sepBounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(3px); }
}

.proj-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.proj-card {
  background: var(--white);
  padding: 1.75rem 1.75rem 1.1rem;
  border: 1px solid var(--steel-100);
  transition: opacity 0.5s ease, transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}

/* Top accent line on hover */
.proj-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  z-index: 2;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.proj-card:hover::before { transform: scaleX(1); }

.proj-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 48px rgba(13, 31, 63, 0.09);
  border-color: var(--steel-200);
}

/* Staggered card reveal */
[data-reveal-stagger] .proj-card {
  opacity: 0;
}

[data-reveal-stagger] .proj-card.visible {
  opacity: 1;
}

.proj-tag {
  font-family: var(--font-head);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.5rem;
}

.proj-title {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.proj-desc {
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.proj-badge {
  font-family: var(--font-head);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(46, 95, 163, 0.25);
  background: rgba(46, 95, 163, 0.04);
  padding: 0.3rem 0.8rem 0.3rem 0.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.proj-badge::before {
  content: '';
  display: block;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
  animation: scrollPulse 2s ease-in-out infinite;
}

.proj-preview {
  margin: -1.75rem -1.75rem 1.25rem;
  height: 200px;
  overflow: hidden;
  position: relative;
  background: var(--white);
  padding: 0.75rem;
  box-sizing: border-box;
}
.proj-preview::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(78, 111, 153, 0.25);
  pointer-events: none;
  z-index: 2;
}

@property --progress {
  syntax: '<percentage>';
  inherits: false;
  initial-value: 0%;
}

.proj-preview-bar {
  --progress: 0%;
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: conic-gradient(rgba(46,95,163,0.48) var(--progress), rgba(46,95,163,0.13) 0%);
  -webkit-mask: radial-gradient(farthest-side, transparent 52%, black 53%);
  mask: radial-gradient(farthest-side, transparent 52%, black 53%);
  animation: donut-progress 3.5s linear forwards;
  z-index: 1;
}

@keyframes donut-progress {
  from { --progress: 0%; }
  to   { --progress: 100%; }
}

.proj-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  transition: opacity 0.5s ease;
}

[data-href="project-commercial-building.html"] .proj-preview img {
  transform: scale(1.15);
}

.proj-card--linked { cursor: pointer; }

/* ── Featured / Pinned card ───────────────────────────── */
.proj-card--featured {
  border-color: rgba(39,163,84,.28);
  box-shadow: 0 4px 20px rgba(39,163,84,.07);
}

/* Permanent green gradient accent bar (overrides hover-only behaviour) */
.proj-card--featured::before {
  background: linear-gradient(90deg, #27a354 0%, #6dda9c 100%);
  transform: scaleX(1);
  height: 3px;
}

.proj-card--featured:hover {
  border-color: rgba(39,163,84,.48);
  box-shadow: 0 16px 48px rgba(39,163,84,.13), 0 0 0 1px rgba(39,163,84,.1);
  transform: translateY(-6px);
}

/* ── Revit/BIM featured variant (purple) */
.proj-card--featured-revit {
  border-color: rgba(124,58,237,.28);
  box-shadow: 0 4px 20px rgba(124,58,237,.07);
}
.proj-card--featured-revit::before {
  background: linear-gradient(90deg, #7c3aed 0%, #a78bfa 100%);
  transform: scaleX(1);
  height: 3px;
}
.proj-card--featured-revit:hover {
  border-color: rgba(124,58,237,.48);
  box-shadow: 0 16px 48px rgba(124,58,237,.13), 0 0 0 1px rgba(124,58,237,.1);
  transform: translateY(-6px);
}
.proj-card--featured-revit .proj-pin {
  background: linear-gradient(135deg, #7c3aed, #5b21b6);
  box-shadow: 2px 2px 8px rgba(124,58,237,.28);
}

/* ── AutoCAD featured variant (blue) */
.proj-card--featured-autocad {
  border-color: rgba(21,101,192,.28);
  box-shadow: 0 4px 20px rgba(21,101,192,.07);
}
.proj-card--featured-autocad::before {
  background: linear-gradient(90deg, #1565C0 0%, #42a5f5 100%);
  transform: scaleX(1);
  height: 3px;
}
.proj-card--featured-autocad:hover {
  border-color: rgba(21,101,192,.48);
  box-shadow: 0 16px 48px rgba(21,101,192,.13), 0 0 0 1px rgba(21,101,192,.1);
  transform: translateY(-6px);
}
.proj-card--featured-autocad .proj-pin {
  background: linear-gradient(135deg, #1565C0, #0d47a1);
  box-shadow: 2px 2px 8px rgba(21,101,192,.28);
}

/* Star badge — top-left corner */
.proj-pin {
  position: absolute;
  top: 0;
  left: 0;
  background: linear-gradient(135deg, #27a354, #1e7a40);
  color: #fff;
  font-size: 0;          /* hide any stray text nodes */
  width: 28px;
  height: 28px;
  border-radius: 0 0 10px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  box-shadow: 2px 2px 8px rgba(39,163,84,.28);
}
.proj-pin::before {
  content: '✦';
  font-size: .65rem;
  line-height: 1;
  color: #fff;
}

/* ── Contact ─────────────────────────────────────────── */
/* Keep section backgrounds always visible — nav backdrop-filter blurs body white through
   any opacity:0 section, creating a light bleed at the nav bottom edge */
#about[data-reveal],
#about[data-reveal].visible,
#projects[data-reveal],
#projects[data-reveal].visible,
#contact[data-reveal],
#contact[data-reveal].visible {
  opacity: 1;
  transform: none;
}

#contact {
  background-color: var(--navy-900);
  background-image:
    linear-gradient(rgba(78, 111, 153, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(78, 111, 153, 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  /* padding-bottom = nav height (84px) + padding-top → equal visual spacing below nav */
  padding-top: clamp(0.5rem, 1.5vh, 1.5rem);
  padding-bottom: calc(84px + clamp(0.5rem, 1.5vh, 1.5rem));
}

/* Cover the scroll-max gap between nav and contact on short viewports */
#contact::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 0;
  right: 0;
  height: 20px;
  background: var(--navy-900);
  pointer-events: none;
}

#contact .section-num   { color: var(--steel-400); }
#contact .section-title { color: var(--white); }
#contact .section-title::after { background: var(--steel-400); }
#contact .section-header { margin-bottom: clamp(0.6rem, 1.2vh, 1.2rem); }

/* Prevent text selection when clicking to make ripples */
#contact { user-select: none; -webkit-user-select: none; }
#contact a { user-select: text; -webkit-user-select: text; }

/* Canvas wave takes over the CSS background grid */
#contact.contact-canvas-active { background-image: none; }
#contact.contact-canvas-active .section-inner { position: relative; z-index: 1; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.contact-headline {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 4vw, 2.75rem);
  font-weight: 300;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  line-height: 1.1;
  color: var(--steel-200);
  margin-bottom: 2.5rem;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.contact-item:first-child { padding-top: 0; }
.contact-item:last-child  { border-bottom: none; }

.contact-label {
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--steel-400);
}

.contact-value {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--white);
  text-decoration: none;
  transition: color 0.2s;
}

a.contact-value:hover { color: var(--steel-200); }

.contact-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.contact-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  margin-top: 1.8rem;
}

.contact-qr img {
  width: 130px;
  height: 130px;
  border-radius: 6px;
  background: #fff;
  padding: 5px;
  display: block;
}

.contact-qr-label {
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel-400);
}

.btn-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: #0A66C2;
  color: #fff;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.6rem 1.1rem 0.6rem 0.85rem;
  border-radius: 4px;
  transition: background 0.2s, transform 0.15s;
  margin-top: 0.25rem;
  min-height: 44px;
  touch-action: manipulation;
}

.btn-linkedin:hover {
  background: #004182;
  transform: translateY(-1px);
}

.btn-linkedin svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.contact-sub {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--white);
}

/* ── Footer ──────────────────────────────────────────── */
footer {
  background: #030c18;
  padding: 2rem var(--pad-x);
}

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

.footer-name {
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
}

.footer-copy {
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.2);
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 1000px) {
  .proj-grid { grid-template-columns: repeat(2, 1fr); }
  #projects .section-header { flex-wrap: wrap; }
}

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-photo-col {
    flex-direction: row;
    align-items: center;
    gap: 1.5rem;
  }
  .about-photo {
    width: 80px;
    height: 80px;
    object-fit: cover;
  }
  .about-photo-name, .about-photo-title { text-align: left; }
  .about-creds {
    padding-left: 0;
    border-left: none;
    border-top: 2px solid var(--accent);
    padding-top: 2.5rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-stats { gap: 2.5rem; }
}

@media (max-width: 600px) {
  .nav-links { gap: 1.5rem; }
  .hero-ctas { flex-direction: column; }
  .btn        { text-align: center; }
  .footer-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
  .hero-stats { gap: 1.75rem; }
  .hero-stat-num { font-size: 1.4rem; }
  .proj-grid { grid-template-columns: 1fr; }
}

/* ── Section header left group ───────────────────────── */
.section-header-left {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
}

#projects .section-header {
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
}

/* ── Project Filter ──────────────────────────────────── */
.proj-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0;
}

.proj-filter-btn {
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--white);
  border: 1px solid var(--steel-100);
  padding: 0.5rem 1.2rem;
  cursor: pointer;
  outline: none;
  position: relative;
  overflow: hidden;
  transition: color 0.22s ease, background 0.22s ease, border-color 0.22s ease, transform 0.18s cubic-bezier(0.34, 1.4, 0.64, 1);
}

.proj-filter-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
}

.proj-filter-btn span { position: relative; z-index: 1; }

.proj-filter-btn:hover:not(.active) {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.proj-filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

.proj-filter-btn.active::before { transform: scaleX(1); }

.proj-filter-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Filter ripple ink effect */
.proj-filter-btn .ink {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  transform: scale(0);
  animation: filterInk 0.45s ease-out forwards;
  pointer-events: none;
  z-index: 2;
}

@keyframes filterInk {
  to { transform: scale(4); opacity: 0; }
}

/* Card filter states */
.proj-card {
  transition: opacity 0.32s ease, transform 0.32s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.proj-card.filter-hide {
  opacity: 0 !important;
  transform: scale(0.93) translateY(8px) !important;
  pointer-events: none;
}

/* ── Project Page ────────────────────────────────────── */

.pp-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem var(--pad-x);
  background: rgba(5, 16, 30, 0.96);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid var(--steel-100);
}

.pp-back {
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color 0.2s;
}
.pp-back:hover { color: var(--white); }

.pp-nav-name {
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
}

.pp-hero {
  padding: clamp(3.5rem, 7vh, 6rem) var(--pad-x);
  border-bottom: 1px solid var(--steel-100);
  max-width: calc(var(--max-w) + var(--pad-x) * 2);
  margin: 0 auto;
}

.pp-scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  margin-top: 2.5rem;
  opacity: 0;
  animation: ppScrollFadeIn 0.8s ease 1s forwards;
}

.pp-chev {
  display: block;
  width: 28px;
  height: 14px;
  position: relative;
  opacity: 0;
}

.pp-chev::before,
.pp-chev::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 2px;
  background: var(--steel-500);
  border-radius: 1px;
  top: 50%;
}

.pp-chev::before { left: 0;   transform: rotate(38deg);  transform-origin: left center; }
.pp-chev::after  { right: 0;  transform: rotate(-38deg); transform-origin: right center; }

.pp-chev:nth-child(1) { animation: ppChevFade 1.8s ease-in-out infinite 0s; }
.pp-chev:nth-child(2) { animation: ppChevFade 1.8s ease-in-out infinite 0.28s; }
.pp-chev:nth-child(3) { animation: ppChevFade 1.8s ease-in-out infinite 0.56s; }

@keyframes ppChevFade {
  0%, 100% { opacity: 0.08; }
  40%       { opacity: 1; }
  70%       { opacity: 0.08; }
}

@keyframes ppScrollFadeIn {
  to { opacity: 1; }
}

.pp-title {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--text);
  margin: 0.75rem 0 0.5rem;
}

.pp-meta {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-300);
  margin-bottom: 1.25rem;
}

.pp-intro {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text-muted);
  max-width: 60ch;
}

.pp-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.pp-action-btn {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.55rem 1.25rem;
  border: 1px solid var(--steel-200);
  color: var(--text-muted);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.pp-action-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pp-action-btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

.pp-action-btn--primary:hover {
  background: var(--accent-h);
  border-color: var(--accent-h);
  color: var(--white);
}

.pp-drawing {
  padding: clamp(3rem, 5vh, 4.5rem) var(--pad-x);
  border-bottom: 1px solid var(--steel-100);
}

.pp-drawing--alt { background: var(--off-white); }

.pp-drawing-info {
  max-width: var(--max-w);
  margin: 0 auto 1.75rem;
}

.pp-sheet {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.pp-drawing h2 {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.pp-drawing p {
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text-muted);
  max-width: 65ch;
}

.pp-frame {
  max-width: var(--max-w);
  margin: 0 auto;
  border: 1px solid var(--steel-100);
  overflow: hidden;
  background: #fafafa;
  position: relative;
}

.pp-frame::after {
  content: 'Click to preview';
  position: absolute;
  bottom: 12px;
  right: 14px;
  font-family: var(--font-head);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(13, 31, 63, 0.45);
  padding: 4px 9px;
  border-radius: 3px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.pp-frame:hover::after {
  opacity: 1;
}

.pp-frame img {
  width: 100%;
  height: auto;
  display: block;
  cursor: zoom-in;
}

/* ── Lightbox ────────────────────────────────────────── */
.lb-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(5, 16, 30, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.lb-overlay.lb-open {
  opacity: 1;
  pointer-events: all;
}

.lb-viewport {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

.lb-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  transform-origin: center center;
  user-select: none;
  pointer-events: none;
  display: block;
}

.lb-close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  z-index: 10;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.55);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.4rem;
  line-height: 1;
  transition: color 0.2s;
}

.lb-close:hover { color: var(--white); }

.lb-hint {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.3);
  pointer-events: none;
  white-space: nowrap;
}

.pp-cross-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.pp-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem var(--pad-x);
  font-family: var(--font-head);
  font-size: 0.8rem;
  color: var(--steel-300);
}

@media (max-width: 600px) {
  .pp-nav-name { display: none; }
  .pp-footer span { display: none; }
}

/* ── Nav right group ─────────────────────────────────── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* ── Sound toggle ────────────────────────────────────── */
.nav-sound {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  padding: 0.35rem;
  display: flex;
  align-items: center;
  transition: color 0.2s ease;
  flex-shrink: 0;
}

.nav-sound:hover { color: rgba(255, 255, 255, 0.75); }
.nav-sound.sound-on { color: rgba(46, 95, 163, 0.9); }

.nav-sound .s-w1,
.nav-sound .s-w2 { opacity: 0; transition: opacity 0.2s; }
.nav-sound.sound-on .s-w1,
.nav-sound.sound-on .s-w2 { opacity: 1; }
.nav-sound .s-mute { opacity: 1; transition: opacity 0.2s; }
.nav-sound.sound-on .s-mute { opacity: 0; }

/* ── Blueprint corners ───────────────────────────────── */
.hero-inner {
  position: relative;
  z-index: 2;
}

.hero-corners {
  position: absolute;
  top: 5.5rem;
  bottom: 4rem;
  left: clamp(1rem, 2.5vw, 2rem);
  right: clamp(1rem, 2.5vw, 2rem);
  pointer-events: none;
  z-index: 0;
}

.hero-corner {
  position: absolute;
  width: 48px;
  height: 48px;
  color: rgba(138, 163, 190, 0.28);
}

.hero-corner--tl { top: 0; left: 0; }
.hero-corner--tr { top: 0; right: 0; }
.hero-corner--bl { bottom: 0; left: 0; }
.hero-corner--br { bottom: 0; right: 0; }

.hero-corner polyline {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: blueprintDraw 1.1s ease forwards;
}

.hero-corner--tl polyline { animation-delay: 0.7s; }
.hero-corner--tr polyline { animation-delay: 0.95s; }
.hero-corner--bl polyline { animation-delay: 0.82s; }
.hero-corner--br polyline { animation-delay: 1.08s; }

@keyframes blueprintDraw {
  to { stroke-dashoffset: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-corner polyline { animation: none; stroke-dashoffset: 0; }
}

/* ══════════════════════════════════════════════════════════
   UX Enhancement Suite
   ══════════════════════════════════════════════════════════ */

/* ── Page Transitions (View Transitions API) ─────────────── */
@view-transition { navigation: auto; }

@keyframes vtFadeOut {
  to { opacity: 0; transform: translateY(-6px); }
}
@keyframes vtSlideIn {
  from { opacity: 0; transform: translateY(14px); }
}

::view-transition-old(root) { animation: vtFadeOut 0.22s ease both; }
::view-transition-new(root) { animation: vtSlideIn 0.35s ease both; }

#nav, .pp-nav { view-transition-name: site-nav; }
::view-transition-old(site-nav),
::view-transition-new(site-nav) { animation: none; }

/* ── Custom Cursor ───────────────────────────────────────── */
#cursor {
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9999;
  will-change: transform;
}
#cursor-dot {
  display: block;
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
#cursor-ring {
  position: absolute;
  top: 0; left: 0;
  width: 28px; height: 28px;
  border: 1.5px solid rgba(46, 95, 163, 0.45);
  border-radius: 50%;
  transition: width 0.18s ease, height 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}
#cursor.hover #cursor-ring {
  width: 44px; height: 44px;
  border-color: rgba(46, 95, 163, 0.75);
  background: rgba(46, 95, 163, 0.06);
}
#cursor.click #cursor-ring {
  width: 18px; height: 18px;
  background: rgba(46, 95, 163, 0.18);
}
body.cursor-active { cursor: none; }
body.cursor-active a,
body.cursor-active button,
body.cursor-active [role="button"],
body.cursor-active .proj-card--linked,
body.cursor-active .section-dot,
body.cursor-active label { cursor: none; }

/* ── Keyboard Shortcut Overlay ───────────────────────────── */
#kb-overlay {
  position: fixed;
  inset: 0;
  z-index: 800;
  background: rgba(5, 16, 30, 0.88);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}
#kb-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.kb-panel {
  background: var(--navy-800);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 2.25rem 2.75rem;
  max-width: 440px;
  width: 90%;
}
.kb-panel-header {
  font-family: var(--font-head);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--steel-400);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.kb-esc {
  font-size: 0.6rem;
  color: var(--steel-500);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  font-family: var(--font-head);
  letter-spacing: 0.08em;
}
.kb-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.kb-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  gap: 1rem;
}
.kb-item:last-child { border-bottom: none; }
.kb-desc {
  font-size: 0.83rem;
  font-weight: 300;
  color: var(--steel-200);
}
.kb-key {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-bottom: 2px solid rgba(0, 0, 0, 0.28);
  padding: 0.22rem 0.55rem;
  border-radius: 3px;
  flex-shrink: 0;
}

/* ── Toast Notification ──────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--navy-800);
  border: 1px solid rgba(46, 95, 163, 0.45);
  color: var(--steel-100);
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.6rem 1.35rem;
  z-index: 700;
  opacity: 0;
  transition: opacity 0.18s ease, transform 0.18s ease;
  pointer-events: none;
  white-space: nowrap;
}
#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Section Progress Dots ───────────────────────────────── */
#section-dots {
  position: fixed;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  z-index: 90;
}
.section-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1px solid rgba(46, 95, 163, 0.4);
  background: transparent;
  transition: background 0.28s ease, border-color 0.28s ease, transform 0.28s ease;
  cursor: pointer;
  position: relative;
}
.section-dot::after {
  content: attr(data-label);
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-head);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel-400);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
}
.section-dot:hover::after { opacity: 1; }
.section-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.5);
}
@media (max-width: 900px) { #section-dots { display: none; } }

/* ── Card Quick-Expand ───────────────────────────────────── */
.proj-expand-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  width: 22px;
  height: 22px;
  border: 1px solid rgba(46, 95, 163, 0.3);
  background: rgba(255, 255, 255, 0.92);
  color: var(--accent);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.18s, border-color 0.18s, color 0.18s;
  font-family: var(--font-head);
  font-weight: 400;
  padding: 0;
}
.proj-expand-btn:hover {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.proj-expand-panel {
  position: absolute;
  inset: 0;
  background: rgba(5, 16, 30, 0.95);
  z-index: 10;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem 1.75rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}
.proj-expand-panel.open {
  opacity: 1;
  pointer-events: all;
}
.proj-expand-close {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0.3rem;
  line-height: 1;
  transition: color 0.18s;
}
.proj-expand-close:hover { color: var(--white); }
.proj-expand-tag {
  font-family: var(--font-head);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}
.proj-expand-title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 0.85rem;
  line-height: 1.15;
}
.proj-expand-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.proj-expand-bullets li {
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--steel-200);
  padding-left: 1rem;
  position: relative;
  line-height: 1.5;
}
.proj-expand-bullets li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ── Skills Proficiency Bars ─────────────────────────────── */
.tools-bars {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.skill-bar-row {
  display: grid;
  grid-template-columns: 165px 1fr 30px;
  align-items: center;
  gap: 0.85rem;
}
@media (max-width: 600px) {
  .skill-bar-row { grid-template-columns: 120px 1fr 28px; }
}
.skill-bar-name {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
}
.skill-bar-track {
  height: 3px;
  background: var(--steel-100);
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}
.skill-bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--accent);
  width: 0%;
  transition: width 1.1s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 2px;
}
.skill-bar-pct {
  font-family: var(--font-head);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--steel-400);
  text-align: right;
}

/* ── Project search input ────────────────────────────────── */
.proj-filter-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}
.proj-search-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.proj-search-icon {
  position: absolute;
  left: 0.55rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--steel-300);
  pointer-events: none;
  line-height: 1;
}
.proj-search {
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--white);
  border: 1px solid var(--steel-100);
  color: var(--text);
  padding: 0.5rem 0.9rem 0.5rem 1.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 170px;
}
.proj-search::placeholder {
  color: var(--steel-300);
  letter-spacing: 0.06em;
}
.proj-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(46, 95, 163, 0.1);
}
.proj-filter-sep {
  width: 1px;
  height: 16px;
  background: var(--steel-200);
  flex-shrink: 0;
}

/* ── Ambient scroll grid pulse ───────────────────────────── */
.hero-grid-pulse {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(78, 111, 153, 1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(78, 111, 153, 1) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
  z-index: 0;
}

/* ── Project page: Sticky Action Bar ────────────────────── */
.pp-sticky-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 90;
  background: rgba(5, 16, 30, 0.97);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 0.8rem var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.pp-sticky-bar.visible { transform: none; }
.pp-sticky-title {
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-200);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pp-sticky-actions {
  display: flex;
  gap: 0.55rem;
  flex-shrink: 0;
}
.pp-sticky-btn {
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.38rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.6);
  transition: border-color 0.18s, color 0.18s;
  white-space: nowrap;
}
.pp-sticky-btn:hover { border-color: rgba(255,255,255,0.4); color: var(--white); }
.pp-sticky-btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}
.pp-sticky-btn--primary:hover { background: var(--accent-h); border-color: var(--accent-h); }

/* ── Project page: TOC Sidebar ───────────────────────────── */
.pp-toc {
  position: fixed;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 89;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.pp-toc.visible { opacity: 1; }
.pp-toc-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  text-decoration: none;
  padding: 0.18rem 0;
  cursor: pointer;
  justify-content: flex-end;
}
.pp-toc-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  border: 1px solid rgba(46, 95, 163, 0.4);
  background: transparent;
  transition: background 0.22s, border-color 0.22s, transform 0.22s;
  flex-shrink: 0;
}
.pp-toc-label {
  font-family: var(--font-head);
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-400);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
}
.pp-toc-item:hover .pp-toc-label { opacity: 1; }
.pp-toc-item.active .pp-toc-dot {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.5);
}
.pp-toc-item.active .pp-toc-label { color: var(--accent); opacity: 1; }
@media (max-width: 1000px) { .pp-toc { display: none; } }

/* ── Image Comparison Slider ─────────────────────────────── */
.img-compare-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
}
.img-compare {
  position: relative;
  overflow: hidden;
  user-select: none;
  cursor: ew-resize;
  border: 1px solid var(--steel-100);
  background: #fafafa;
  touch-action: none;
}
.img-compare img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
}
.img-compare-before {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.img-compare-before img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
}
.img-compare-divider {
  position: absolute;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--white);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  pointer-events: none;
}
.img-compare-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px; height: 36px;
  background: var(--white);
  border-radius: 50%;
  border: 2px solid var(--accent);
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.18);
  pointer-events: none;
}
.img-compare-handle::before,
.img-compare-handle::after {
  content: '';
  width: 0; height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}
.img-compare-handle::before {
  border-right: 6px solid var(--accent);
  margin-right: 2px;
}
.img-compare-handle::after {
  border-left: 6px solid var(--accent);
  margin-left: 2px;
}
.img-compare-label {
  position: absolute;
  bottom: 0.5rem;
  font-family: var(--font-head);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(13, 31, 63, 0.55);
  padding: 3px 8px;
  z-index: 2;
  pointer-events: none;
}
.img-compare-label--a { left: 0.75rem; }
.img-compare-label--b { right: 0.75rem; }

/* ── Related Projects Strip ──────────────────────────────── */
.pp-related {
  padding: clamp(3rem, 5vh, 4rem) var(--pad-x);
  border-top: 1px solid var(--steel-100);
  background: var(--off-white);
}
.pp-related-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.pp-related-title {
  font-family: var(--font-head);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--steel-400);
  margin-bottom: 1.4rem;
}
.pp-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}
@media (max-width: 700px) { .pp-related-grid { grid-template-columns: 1fr; } }
.pp-related-card {
  background: var(--white);
  border: 1px solid var(--steel-100);
  padding: 1.1rem;
  text-decoration: none;
  display: block;
  transition: border-color 0.22s, box-shadow 0.22s, transform 0.22s;
  position: relative;
  overflow: hidden;
}
.pp-related-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}
.pp-related-card:hover::before { transform: scaleX(1); }
.pp-related-card:hover {
  border-color: var(--steel-200);
  box-shadow: 0 8px 28px rgba(13, 31, 63, 0.08);
  transform: translateY(-3px);
}
.pp-related-thumb {
  width: 100%;
  height: 90px;
  object-fit: contain;
  object-position: center;
  display: block;
  margin-bottom: 0.75rem;
  background: var(--off-white);
  padding: 0.4rem;
}
.pp-related-tag {
  font-family: var(--font-head);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.25rem;
}
.pp-related-name {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--text);
  line-height: 1.2;
}

/* ── Lightbox Zoom Indicator ─────────────────────────────── */
#lb-zoom {
  position: absolute;
  top: 1.25rem;
  left: 1.5rem;
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.3);
  pointer-events: none;
  transition: color 0.2s;
  z-index: 10;
}
.lb-overlay.lb-zoomed #lb-zoom { color: rgba(255, 255, 255, 0.75); }

/* ── Skeleton loading (project pages) ────────────────────── */
.pp-frame { position: relative; }
.pp-frame.is-loading::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    var(--steel-100) 25%,
    var(--off-white) 50%,
    var(--steel-100) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  z-index: 1;
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.pp-frame img { transition: opacity 0.3s ease; }
.pp-frame.is-loading img { opacity: 0; }

/* ── Project page: Australian Standards note ─────────────── */
.pp-standards {
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel-400);
  margin-top: 1.25rem;
  opacity: 0.7;
}

/* ── Hero canvas water ripple ────────────────────────────── */
.hero-canvas-active {
  background-image: none !important;
}

/* ── Contact copy hint ───────────────────────────────────── */
.contact-item[data-copy] {
  position: relative;
}
.contact-item[data-copy]::after {
  content: '⎘  copy all';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-head);
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.18);
  opacity: 0;
  transition: opacity 0.22s ease, color 0.22s ease;
  pointer-events: none;
  white-space: nowrap;
}
.contact-item[data-copy]:hover::after {
  opacity: 1;
  color: rgba(46, 95, 163, 0.75);
}

/* ── Project page: sticky bar → floating corner ──────────── */
.pp-sticky-bar {
  bottom: 1.5rem;
  left: auto;
  right: clamp(1rem, var(--pad-x), 3rem);
  width: auto;
  background: transparent;
  backdrop-filter: none;
  border-top: none;
  padding: 0;
  transform: translateY(12px);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  justify-content: flex-end;
}
.pp-sticky-bar.visible {
  transform: none;
  opacity: 1;
}
.pp-sticky-title { display: none; }
.pp-sticky-actions { gap: 0.4rem; }
.pp-sticky-btn {
  font-size: 0.64rem;
  padding: 0.48rem 1rem;
  background: rgba(5, 16, 30, 0.92);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}
.pp-sticky-btn--primary {
  border-color: var(--accent);
}
@media (max-width: 600px) {
  .pp-sticky-bar { bottom: 1rem; right: 0.75rem; }
}

/* ── Touch & Mobile Enhancements ────────────────────────────────────────────── */

/* Eliminate 300ms tap delay on all interactive elements */
a, button, [role="button"],
.proj-card--linked, .section-dot,
.proj-filter-btn, .tool-pill,
.contact-item, .pp-related-card,
.pp-toc-item, .pp-sticky-btn,
.pp-back, .hero-scroll, .lb-close {
  touch-action: manipulation;
}

/* Minimum 44 × 44 px tap targets on coarse-pointer devices (touch / stylus) */
@media (pointer: coarse) {
  .nav-links a {
    min-height: 44px;
    padding: 0.55rem 0.25rem;
    display: inline-flex;
    align-items: center;
  }
  .nav-sound {
    min-width: 44px;
    min-height: 44px;
    padding: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .proj-filter-btn {
    min-height: 44px;
    padding: 0.55rem 1.2rem;
  }
  .proj-expand-btn {
    width: 36px;
    height: 36px;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 1.1rem;
  }
  .proj-expand-close {
    padding: 0.85rem;
    font-size: 1.1rem;
  }
  .lb-close {
    padding: 1rem 1.25rem;
    font-size: 1.6rem;
    top: 0.75rem;
    right: 0.75rem;
  }
  .pp-back {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
  .pp-action-btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
  .pp-sticky-btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
  .tool-pill {
    padding: 0.45rem 0.85rem;
  }

  /* Remove hover-only transforms that do nothing on touch */
  .proj-card:hover {
    transform: none;
    box-shadow: none;
  }
  .proj-filter-btn:hover:not(.active) {
    transform: none;
  }
  .nav-links a:hover,
  .nav-links a.active {
    transform: none;
    letter-spacing: 0.14em;
  }
  .pp-related-card:hover {
    transform: none;
  }

  /* Contact copy hint — always slightly visible on touch instead of hover-only */
  .contact-item[data-copy]::after {
    content: '↗ tap to copy';
    opacity: 0.4;
    color: var(--steel-400);
  }

  /* Project page frame hint — always show on touch, say "Tap" */
  .pp-frame::after {
    content: 'Tap to preview';
    opacity: 0.8;
  }

  /* Lightbox hint — update for touch interaction model */
  .lb-hint::before {
    content: 'Double-tap to zoom · Drag to pan';
  }
  .lb-hint {
    font-size: 0; /* hide original text */
  }
  .lb-hint::before {
    font-size: 0.7rem;
    font-family: var(--font-head);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
}

/* Nav overflow safeguard on very small phones (≤ 390px) */
@media (max-width: 390px) {
  .nav-links { gap: 1rem; }
  .nav-links a { font-size: 0.76rem; letter-spacing: 0.1em; }
  .nav-contact { padding: 0.28rem 0.6rem 0.32rem; }
}

/* Safe-area insets for notched / home-indicator phones */
@supports (padding: env(safe-area-inset-bottom)) {
  #nav { padding-left: max(var(--pad-x), env(safe-area-inset-left)); padding-right: max(var(--pad-x), env(safe-area-inset-right)); }
  footer { padding-bottom: max(2rem, env(safe-area-inset-bottom)); }
  .pp-sticky-bar { bottom: max(1rem, env(safe-area-inset-bottom)); }
  #toast { bottom: max(2rem, calc(env(safe-area-inset-bottom) + 1rem)); }
}