/* ═══════════════════════════════════════════════════════════
   EDITORIAL — minimal, content-first redesign
   Self-contained. Theming via CSS variables + [data-theme].
   ═══════════════════════════════════════════════════════════ */

/* ── Design tokens ─────────────────────────────────────────── */
:root {
  /* Light / Paper (default) */
  --bg:        #fafaf8;
  --bg-elev:   #ffffff;
  --bg-soft:   #f2f1ec;
  --text:      #18181b;
  --muted:     #5d5d66;
  --faint:     #9a9aa2;
  --line:      #e5e4df;
  --line-soft: #eceae4;
  --accent:    #4f46e5;
  --accent-soft: rgba(79, 70, 229, .08);
  --shadow:    0 1px 2px rgba(24, 24, 27, .04), 0 8px 30px rgba(24, 24, 27, .05);

  --maxw: 1080px;
  --maxw-wide: 1200px;
  --gutter: clamp(1.25rem, 5vw, 3rem);

  --font-serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:  'JetBrains Mono', ui-monospace, 'SF Mono', monospace;

  --ease: cubic-bezier(.22, 1, .36, 1);
}

:root[data-theme="dark"] {
  --bg:        #0b0b0c;
  --bg-elev:   #141416;
  --bg-soft:   #161618;
  --text:      #ededed;
  --muted:     #9b9ba2;
  --faint:     #66666d;
  --line:      #232326;
  --line-soft: #1c1c1f;
  --accent:    #8b82ff;
  --accent-soft: rgba(139, 130, 255, .1);
  --shadow:    0 1px 2px rgba(0, 0, 0, .3), 0 12px 40px rgba(0, 0, 0, .35);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color .4s var(--ease), color .4s var(--ease);
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; padding: 0; }
button { font-family: inherit; cursor: pointer; }

::selection { background: var(--accent-soft); color: var(--text); }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 99px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--faint); }

/* ── Layout helpers ────────────────────────────────────────── */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.wrap-wide { max-width: var(--maxw-wide); }

.kicker {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
}

.serif { font-family: var(--font-serif); font-optical-sizing: auto; }

/* ── Reveal animation ──────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ═══ NAVIGATION ═══════════════════════════════════════════ */
.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 900;
  height: 72px;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background-color .3s var(--ease);
}
.site-nav.scrolled { border-bottom-color: var(--line); }

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -.01em;
  white-space: nowrap;
}
.brand .dot { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: .35rem;
}
.nav-links a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--muted);
  padding: .45rem .7rem;
  border-radius: 8px;
  transition: color .2s var(--ease), background-color .2s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: '';
  display: block;
  height: 1.5px;
  margin-top: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-side { display: flex; align-items: center; gap: .5rem; }

/* Resume dropdown */
.resume-wrap { position: relative; }
.resume-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: .5rem .85rem;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}
.resume-btn:hover { border-color: var(--accent); background: var(--accent-soft); }
.resume-btn .chev { font-size: .6rem; transition: transform .25s var(--ease); }
.resume-wrap.open .resume-btn .chev { transform: rotate(180deg); }

.resume-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: .35rem;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity .2s var(--ease), transform .2s var(--ease);
}
.resume-wrap.open .resume-menu { opacity: 1; transform: none; pointer-events: auto; }
.resume-menu a {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .85rem;
  font-weight: 500;
  color: var(--muted);
  padding: .55rem .65rem;
  border-radius: 8px;
  transition: color .2s, background-color .2s;
}
.resume-menu a:hover { color: var(--text); background: var(--bg-soft); }
.resume-menu i { color: var(--accent); width: 1rem; text-align: center; }

/* Theme toggle */
.theme-toggle {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--muted);
  font-size: .9rem;
  transition: color .2s, border-color .2s, background-color .2s;
}
.theme-toggle:hover { color: var(--text); border-color: var(--accent); background: var(--accent-soft); }
.theme-toggle .fa-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .fa-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .fa-moon { display: none; }

/* Hamburger */
.menu-btn {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 9px;
}
.menu-btn span {
  display: block; width: 18px; height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.menu-btn.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Scroll progress */
.scroll-progress {
  position: absolute;
  bottom: -1px; left: 0;
  height: 2px; width: 0;
  background: var(--accent);
  transition: width .1s linear;
}

/* ═══ HERO ═════════════════════════════════════════════════ */
.hero {
  padding-top: clamp(7rem, 16vh, 11rem);
  padding-bottom: clamp(3rem, 8vh, 6rem);
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-bottom: 1.5rem;
}
.hero-kicker .pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: #16a34a;
  box-shadow: 0 0 0 0 rgba(22, 163, 74, .5);
  animation: pulse-dot 2.4s infinite;
}
:root[data-theme="dark"] .hero-kicker .pulse { background: #4ade80; box-shadow: 0 0 0 0 rgba(74, 222, 128, .5); }
@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(22, 163, 74, .5); }
  70% { box-shadow: 0 0 0 7px rgba(22, 163, 74, 0); }
  100% { box-shadow: 0 0 0 0 rgba(22, 163, 74, 0); }
}

.hero-name {
  font-family: var(--font-serif);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: clamp(3.1rem, 11vw, 7rem);
  line-height: .98;
  letter-spacing: -.025em;
  margin-bottom: 1.5rem;
}
.hero-name em {
  font-style: italic;
  color: var(--accent);
}

.hero-role {
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  font-weight: 500;
  color: var(--text);
  margin-bottom: 1.25rem;
}
.hero-role .sep { color: var(--faint); margin: 0 .5rem; font-weight: 400; }

.hero-lede {
  font-size: clamp(1.02rem, 1.6vw, 1.15rem);
  color: var(--muted);
  line-height: 1.7;
  max-width: 38rem;
  margin-bottom: 2.25rem;
}
.hero-lede strong { color: var(--text); font-weight: 600; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem;
  margin-bottom: 3.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .9rem;
  font-weight: 600;
  padding: .7rem 1.25rem;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: transform .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { background: var(--accent); color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); background: var(--accent-soft); }

.hero-socials { display: flex; gap: .5rem; }
.icon-link {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--muted);
  font-size: 1rem;
  transition: color .2s, border-color .2s, background-color .2s, transform .2s var(--ease);
}
.icon-link:hover { color: var(--text); border-color: var(--accent); background: var(--accent-soft); transform: translateY(-1px); }

/* Hero stats — editorial figures */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem) clamp(1rem, 3vw, 2.5rem);
  padding-top: 2.25rem;
  border-top: 1px solid var(--line);
}
.stat .num {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1;
  letter-spacing: -.02em;
  display: block;
  margin-bottom: .45rem;
}
.stat .num i { font-size: .85em; color: var(--accent); }
.stat .label {
  font-size: .78rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ═══ SECTION SCAFFOLD ═════════════════════════════════════ */
section { scroll-margin-top: 80px; }
.section { padding-block: clamp(4rem, 9vw, 7rem); }
.section + .section { border-top: 1px solid var(--line-soft); }

.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: clamp(2.5rem, 5vw, 3.75rem);
}
.sec-head .titles { }
.sec-num { display: block; margin-bottom: .85rem; }
.sec-title {
  font-family: var(--font-serif);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: -.02em;
}
.sec-link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-size: .875rem;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  padding-bottom: .35rem;
  transition: color .2s var(--ease), gap .2s var(--ease);
}
.sec-link:hover { color: var(--accent); gap: .7rem; }

/* ═══ SELECTED WORK (editorial list) ═══════════════════════ */
.work-list { border-top: 1px solid var(--line); }
.work-item {
  position: relative;
  display: grid;
  grid-template-columns: 3.5rem 1fr auto;
  align-items: baseline;
  gap: 1.5rem;
  padding: clamp(1.5rem, 3vw, 2.1rem) .5rem;
  border-bottom: 1px solid var(--line);
  transition: padding-left .35s var(--ease), background-color .3s var(--ease);
}
.work-item:hover { background: var(--bg-soft); padding-left: 1.25rem; }
.work-index {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--faint);
  padding-top: .35rem;
}
.work-main { min-width: 0; }
.work-title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  line-height: 1.15;
  letter-spacing: -.015em;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  transition: color .25s var(--ease);
}
.work-item:hover .work-title { color: var(--accent); }
.work-title .arrow {
  font-size: .55em;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.work-item:hover .work-title .arrow { opacity: 1; transform: none; }
.work-tag {
  font-family: var(--font-mono);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--accent);
  vertical-align: middle;
}
.work-desc {
  color: var(--muted);
  font-size: .98rem;
  margin-top: .55rem;
  max-width: 42rem;
}
.work-tech {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .55rem;
  margin-top: .9rem;
}
.work-tech span {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--faint);
}
.work-tech span:not(:last-child)::after { content: '·'; margin-left: .55rem; color: var(--line); }
.work-meta {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--muted);
  white-space: nowrap;
  padding-top: .35rem;
}

/* ═══ ABOUT ════════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}
.bio p {
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 1.25rem;
}
.bio p strong { color: var(--text); font-weight: 600; }
.bio .lead { font-size: 1.18rem; color: var(--text); }
.bio-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }

.side-block + .side-block { margin-top: 2.5rem; }
.side-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 1.1rem;
}
.edu-item { padding-bottom: 1.1rem; margin-bottom: 1.1rem; border-bottom: 1px solid var(--line-soft); }
.edu-item:last-child { border-bottom: 0; margin-bottom: 0; padding-bottom: 0; }
.edu-item .deg { font-weight: 600; font-size: 1rem; }
.edu-item .school { color: var(--accent); font-size: .92rem; margin-top: .15rem; }
.edu-item .when { font-family: var(--font-mono); font-size: .78rem; color: var(--muted); margin-top: .2rem; }

.facts dl { display: grid; gap: .85rem; margin: 0; }
.facts .row { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; border-bottom: 1px dashed var(--line); padding-bottom: .75rem; }
.facts .row:last-child { border-bottom: 0; padding-bottom: 0; }
.facts dt { color: var(--muted); font-size: .9rem; }
.facts dd { margin: 0; font-family: var(--font-serif); font-weight: 500; font-size: 1.05rem; white-space: nowrap; }

/* ═══ SKILLS ═══════════════════════════════════════════════ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem) clamp(2.5rem, 6vw, 5rem);
}
.skill-group .side-label { margin-bottom: 1rem; }
.skill-list { display: flex; flex-wrap: wrap; gap: .5rem; }
.skill-list span {
  font-size: .85rem;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: .3rem .7rem;
  transition: border-color .2s, color .2s, background-color .2s;
}
.skill-list span:hover { border-color: var(--accent); color: var(--accent); }

/* ═══ EXPERIENCE ═══════════════════════════════════════════ */
.exp-group-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.exp-group + .exp-group { margin-top: 3rem; }
.exp-item {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}
.exp-item:last-child { border-bottom: 1px solid var(--line); }
.exp-when { font-family: var(--font-mono); font-size: .8rem; color: var(--muted); padding-top: .2rem; }
.exp-role {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.25rem;
  line-height: 1.25;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  transition: color .2s var(--ease);
}
a.exp-role:hover { color: var(--accent); }
.exp-role .arrow { font-size: .55em; opacity: .5; }
.exp-org { color: var(--accent); font-size: .9rem; margin-top: .25rem; }
.exp-points { margin-top: .85rem; display: grid; gap: .5rem; }
.exp-points li { position: relative; padding-left: 1.1rem; color: var(--muted); font-size: .94rem; line-height: 1.6; }
.exp-points li::before { content: '—'; position: absolute; left: 0; color: var(--accent); }
.exp-more { display: inline-flex; align-items: center; gap: .4rem; font-size: .82rem; font-weight: 600; color: var(--accent); margin-top: .9rem; transition: gap .2s var(--ease); }
.exp-more:hover { gap: .65rem; }

/* Honors grid (achievements list) */
.honors { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem; }
.honor {
  display: flex;
  align-items: baseline;
  gap: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.25rem 1.4rem;
  background: var(--bg-elev);
  transition: border-color .25s var(--ease);
}
.honor:hover { border-color: var(--accent); }
.honor-metric {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--accent);
  white-space: nowrap;
  min-width: 3.6rem;
}
.honor-name { font-weight: 600; font-size: .97rem; color: var(--text); line-height: 1.25; }
.honor-ctx { color: var(--muted); font-size: .85rem; margin-top: .25rem; line-height: 1.45; }
@media (max-width: 760px) { .honors { grid-template-columns: 1fr; } }

/* ═══ COURSEWORK ═══════════════════════════════════════════ */
.course-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.course-row .ct { max-width: 38rem; }
.course-row h3 { font-family: var(--font-serif); font-weight: 500; font-size: 1.4rem; margin-bottom: .5rem; }
.course-row p { color: var(--muted); font-size: .98rem; }

/* ═══ CONTACT ══════════════════════════════════════════════ */
.contact { text-align: center; }
.contact-statement {
  font-family: var(--font-serif);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  max-width: 18ch;
  margin: 0 auto 2.5rem;
}
.contact-statement a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 6px; transition: opacity .2s; }
.contact-statement a:hover { opacity: .7; }
.contact-sub { color: var(--muted); font-size: 1.05rem; max-width: 34rem; margin: 0 auto 2.5rem; line-height: 1.7; }
.contact-sub strong { color: var(--text); font-weight: 600; }

.email-row { display: inline-flex; align-items: stretch; gap: .5rem; flex-wrap: wrap; justify-content: center; margin-bottom: 1.75rem; }
.email-link {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 500;
  padding: .85rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: 11px;
  transition: border-color .2s, background-color .2s, color .2s;
}
.email-link:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.copy-btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: 0 1.1rem;
  font-size: .85rem; font-weight: 500;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 11px;
  transition: border-color .2s, color .2s;
}
.copy-btn:hover { border-color: var(--accent); color: var(--text); }
.copy-btn.copied { border-color: var(--accent); color: var(--accent); }
.contact-socials { display: flex; gap: .6rem; justify-content: center; }

/* ═══ FOOTER ═══════════════════════════════════════════════ */
.site-footer { border-top: 1px solid var(--line); padding-block: 2.5rem; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
.footer-inner p { font-size: .85rem; color: var(--muted); }
.footer-inner .accent { color: var(--accent); }
.footer-socials { display: flex; gap: 1.1rem; }
.footer-socials a { color: var(--muted); font-size: 1rem; transition: color .2s; }
.footer-socials a:hover { color: var(--accent); }

/* ═══ SCROLL TO TOP ════════════════════════════════════════ */
.to-top {
  position: fixed;
  bottom: 1.75rem; right: 1.75rem;
  z-index: 800;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: var(--text); color: var(--bg);
  border: none; border-radius: 50%;
  box-shadow: var(--shadow);
  opacity: 0; pointer-events: none;
  transform: translateY(8px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), background-color .2s;
}
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--accent); color: #fff; }

/* ── Focus ─────────────────────────────────────────────────── */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ═══ RESPONSIVE ═══════════════════════════════════════════ */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 1.75rem 1.25rem; }
  .skills-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .menu-btn { display: flex; }

  .nav-links.mobile-open {
    display: flex;
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem var(--gutter) 2rem;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }
  .nav-links.mobile-open a { padding: .85rem 0; font-size: 1.05rem; border-bottom: 1px solid var(--line-soft); }
  .nav-links.mobile-open a.active::after { display: none; }

  .work-item { grid-template-columns: 2.25rem 1fr; }
  .work-meta { grid-column: 2; padding-top: .25rem; }
  .work-index { font-size: .75rem; }

  .exp-item { grid-template-columns: 1fr; gap: .5rem; }
  .exp-when { padding-top: 0; }

  .sec-head { flex-direction: column; align-items: flex-start; gap: .9rem; }
}

@media (max-width: 420px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .facts dd { font-size: .98rem; }
}

/* ── Reduced motion ────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ═══════════════════════════════════════════════════════════
   SUB-PAGES (projects / experience / courses / details / 404)
   ═══════════════════════════════════════════════════════════ */
.accent-text { color: var(--accent); }

/* First section clears the fixed nav */
.section--hero { padding-top: clamp(7rem, 14vh, 9.5rem); padding-bottom: clamp(1.5rem, 4vw, 2.5rem); }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--muted);
  margin-bottom: 1.75rem;
  transition: gap .2s var(--ease), color .2s var(--ease);
}
.back-link:hover { color: var(--accent); gap: .8rem; }

.page-title {
  font-family: var(--font-serif);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.04;
  letter-spacing: -.025em;
}
.page-sub { color: var(--muted); max-width: 48rem; margin-top: 1.25rem; font-size: 1.05rem; line-height: 1.7; }
.page-sub .hl { color: var(--text); font-weight: 500; }
.page-meta { font-family: var(--font-mono); font-size: .8rem; color: var(--muted); margin-top: 1rem; }

/* Tag row (badge + date) */
.tagrow { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-bottom: 1.5rem; }
.badge {
  font-family: var(--font-mono);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: .32rem .75rem;
}
.tagrow .when { font-family: var(--font-mono); font-size: .8rem; color: var(--muted); }
.detail-org { font-family: var(--font-serif); font-size: 1.2rem; color: var(--accent); margin-top: .65rem; }

.detail-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }

/* Metrics strip */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.metric { background: var(--bg); padding: 1.6rem 1.1rem; text-align: center; }
.metric .v {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  letter-spacing: -.01em;
  color: var(--text);
}
.metric .v .accent-text { color: var(--accent); }
.metric .k { font-size: .76rem; color: var(--muted); margin-top: .45rem; line-height: 1.4; }

/* Section heading inside detail pages */
.detail-h {
  font-family: var(--font-serif);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  margin-bottom: 1.5rem;
}
.detail-h .accent-text { color: var(--accent); }
.detail-intro { color: var(--muted); max-width: 48rem; margin: -.5rem 0 2rem; line-height: 1.7; }

/* Prose card */
.prose-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--bg-elev);
}
.prose-card p { color: var(--muted); line-height: 1.8; font-size: .97rem; }
.prose-card p + p { margin-top: 1rem; }
.prose-card .hl { color: var(--text); font-weight: 600; }
.prose-list { margin-top: 1.25rem; display: grid; gap: .8rem; }
.prose-list li { position: relative; padding-left: 1.5rem; color: var(--muted); line-height: 1.65; font-size: .95rem; }
.prose-list li::before { content: '→'; position: absolute; left: 0; top: 0; color: var(--accent); }
.prose-list .hl { color: var(--text); font-weight: 600; }

/* Feature / step / deliverable cards */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.feature {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.6rem;
  background: var(--bg-elev);
  transition: border-color .25s var(--ease);
}
.feature:hover { border-color: var(--accent); }
.feature .ic {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 1rem;
  font-family: var(--font-serif);
  font-weight: 500;
}
.feature h3 { font-family: var(--font-serif); font-weight: 500; font-size: 1.2rem; margin-bottom: .55rem; line-height: 1.2; }
.feature p { color: var(--muted); font-size: .92rem; line-height: 1.65; }

.deliverable { border: 1px solid var(--line); border-radius: 14px; padding: 1.6rem; background: var(--bg-elev); }
.deliverable .badge { margin-bottom: .9rem; display: inline-block; }
.deliverable h3 { font-family: var(--font-serif); font-weight: 500; font-size: 1.25rem; margin-bottom: .55rem; }
.deliverable p { color: var(--muted); font-size: .92rem; line-height: 1.65; }
.deliverable .more { display: inline-flex; align-items: center; gap: .4rem; font-size: .85rem; font-weight: 600; color: var(--accent); margin-top: .9rem; transition: gap .2s var(--ease); }
.deliverable .more:hover { gap: .65rem; }

/* Tech stack grid */
.tech-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.tech-cat { border: 1px solid var(--line); border-radius: 14px; padding: 1.5rem; }
.tech-cat h3 { font-size: .95rem; font-weight: 600; margin-bottom: 1rem; }

/* Data tables */
.table-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  background: var(--bg-elev);
}
.table-card h3 { font-family: var(--font-serif); font-weight: 500; font-size: 1.2rem; margin-bottom: .35rem; }
.table-card .note { color: var(--muted); font-size: .9rem; line-height: 1.6; margin-bottom: 1.1rem; }
.table-scroll { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.data-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  font-weight: 500;
  color: var(--muted);
  padding: .55rem .7rem;
  border-bottom: 1px solid var(--line);
}
.data-table td { padding: .55rem .7rem; border-bottom: 1px solid var(--line-soft); color: var(--muted); }
.data-table tr:last-child td { border-bottom: 0; }
.data-table .em { color: var(--text); font-weight: 500; }
.data-table .pos { color: var(--accent); font-weight: 600; }
.data-table .right { text-align: right; }
.scope-note { font-size: .82rem; color: var(--faint); font-style: italic; line-height: 1.6; margin-top: 1.25rem; }

/* ── Project listing ──────────────────────────────────────── */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2.75rem; }
.chip {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: .42rem .95rem;
  transition: color .2s, border-color .2s, background-color .2s;
}
.chip:hover { color: var(--text); border-color: var(--accent); }
.chip.active { color: var(--bg); background: var(--text); border-color: var(--text); }
.proj-group.hidden-group { display: none; }
.proj-group + .proj-group { margin-top: 3.5rem; }
.group-label {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 1.5rem;
  padding-bottom: .85rem;
  border-bottom: 1px solid var(--line);
}
.proj-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.proj-grid.three { grid-template-columns: repeat(3, 1fr); }
.proj-card {
  display: flex;
  flex-direction: column;
  gap: .7rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.6rem;
  background: var(--bg-elev);
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.proj-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.proj-card .top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.proj-card .when { font-family: var(--font-mono); font-size: .76rem; color: var(--muted); }
.proj-card h3 { font-family: var(--font-serif); font-weight: 500; font-size: 1.35rem; line-height: 1.15; }
.proj-card h3 a { transition: color .2s; }
.proj-card h3 a:hover { color: var(--accent); }
.proj-card .role { color: var(--muted); font-size: .88rem; }
.proj-card .pts { display: grid; gap: .5rem; margin-top: .15rem; flex: 1; }
.proj-card .pts li { position: relative; padding-left: 1.2rem; color: var(--muted); font-size: .88rem; line-height: 1.55; }
.proj-card .pts li::before { content: '→'; position: absolute; left: 0; color: var(--accent); opacity: .8; }
.proj-card .tech { display: flex; flex-wrap: wrap; gap: .35rem .5rem; padding-top: .9rem; margin-top: auto; border-top: 1px solid var(--line-soft); }
.proj-card .tech span { font-family: var(--font-mono); font-size: .72rem; color: var(--faint); }
.proj-card .ext { font-size: .55em; opacity: .6; margin-left: .25rem; }

/* ── Courses ──────────────────────────────────────────────── */
.course-divider { display: flex; align-items: center; gap: 1.1rem; margin: 0 0 1.85rem; }
.course-divider span { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.course-divider::before, .course-divider::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.course-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.course-grid + .course-divider { margin-top: 3.5rem; }
.course-card { border: 1px solid var(--line); border-radius: 14px; padding: 1.6rem; background: var(--bg-elev); }
.course-card h3 { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-bottom: 1.1rem; }
.course-card ul { display: grid; gap: .7rem; }
.course-card li { color: var(--text); font-size: .92rem; line-height: 1.4; display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.course-card .code { font-family: var(--font-mono); font-size: .7rem; color: var(--faint); white-space: nowrap; }

/* ── 404 ──────────────────────────────────────────────────── */
.notfound { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 2rem; }
.notfound .big { font-family: var(--font-serif); font-weight: 500; font-size: clamp(5rem, 18vw, 11rem); line-height: 1; letter-spacing: -.03em; color: var(--accent); }
.notfound p { color: var(--muted); font-size: 1.15rem; margin: 1rem 0 2.25rem; }

/* ── Sub-page responsive ──────────────────────────────────── */
@media (max-width: 760px) {
  .feature-grid, .tech-grid, .proj-grid, .proj-grid.three, .course-grid { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 420px) {
  .metric .v { font-size: 1.5rem; }
}