/* ==========================================================
   SHOAIB MAJID DAR — Engineering Journal
   Type: Fraunces (display) · Archivo (body) · IBM Plex Mono (meta)
   ========================================================== */

/* ---------- Tokens ---------- */
:root {
  /* Paper (light) */
  --paper: #f5efe3;
  --paper-high: #fdfaf2;
  --paper-dim: #ece4d2;
  --ink: #1d1810;
  --ink-soft: #4c4434;
  --ink-mute: #8a7f69;
  --line: #d9cfb8;
  --line-strong: #1d1810;
  --accent: #c2441d;
  --accent-deep: #9c3413;
  --accent-ink: #fdf6ec;
  --ok: #3f6f3f;
  --err: #a33020;

  --font-display: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --font-body: 'Archivo', 'Helvetica Neue', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', monospace;

  --container: 1180px;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
  --nav-h: 72px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 180ms var(--ease);
  --t-med: 380ms var(--ease);
}

[data-theme="dark"] {
  --paper: #161209;
  --paper-high: #201a0f;
  --paper-dim: #110d06;
  --ink: #efe6d2;
  --ink-soft: #c0b49a;
  --ink-mute: #8a7f69;
  --line: #332b1c;
  --line-strong: #efe6d2;
  --accent: #ff6d38;
  --accent-deep: #ff8b5e;
  --accent-ink: #1d1006;
  --ok: #8fbf8f;
  --err: #ff7a64;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  min-height: 100vh;
  transition: background-color var(--t-med), color var(--t-med);
}

/* Paper grain */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2000;
  pointer-events: none;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.92' numOctaves='2'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection { background: var(--accent); color: var(--accent-ink); }

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

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 560;
  line-height: 1.06;
  letter-spacing: -0.015em;
  font-variation-settings: "opsz" 60;
}

h1 em, h2 em, h3 em {
  font-style: italic;
  font-weight: 480;
  color: var(--accent);
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* Mono metadata utility */
.mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 90ms; }
.reveal.d2 { transition-delay: 180ms; }
.reveal.d3 { transition-delay: 270ms; }
.reveal.d4 { transition-delay: 360ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: border-color var(--t-med), background-color var(--t-med);
}

.navbar.scrolled { border-bottom-color: var(--line-strong); }

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

.nav-logo {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.nav-logo sup {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.55rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-left: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0.4rem 0;
  position: relative;
  transition: color var(--t-fast);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-med);
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-link.active { color: var(--ink); }
.nav-link.active::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: 0.75rem; }

.theme-toggle {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink-soft);
  cursor: pointer;
  transition: border-color var(--t-fast), color var(--t-fast), transform var(--t-fast);
}
.theme-toggle:hover { border-color: var(--ink); color: var(--ink); transform: rotate(15deg); }
.theme-toggle svg { width: 16px; height: 16px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 50%;
  cursor: pointer;
  align-items: center;
}
.nav-toggle span {
  display: block;
  width: 15px;
  height: 1.5px;
  background: var(--ink);
  transition: transform var(--t-fast), opacity var(--t-fast);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.95rem 1.6rem;
  border: 1px solid var(--line-strong);
  cursor: pointer;
  transition: transform var(--t-fast), box-shadow var(--t-fast),
              background-color var(--t-fast), color var(--t-fast);
}
.btn svg { width: 14px; height: 14px; transition: transform var(--t-fast); }
.btn:hover svg { transform: translateX(4px); }

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--line-strong);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
}
.btn-secondary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--accent);
}

/* ---------- Masthead (home hero) ---------- */
.masthead {
  padding-top: clamp(3rem, 8vh, 6rem);
  border-bottom: 1px solid var(--line-strong);
}

.masthead-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink-mute);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink-soft);
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ok);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 45%, transparent); }
  55% { box-shadow: 0 0 0 6px transparent; }
}

.masthead-name {
  font-size: clamp(3.2rem, 11.5vw, 9.2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 0.98;
  padding: clamp(1.5rem, 4vh, 3rem) 0 clamp(1.2rem, 3vh, 2.4rem);
  text-wrap: balance;
}
.masthead-name .last-name { color: var(--accent); font-style: italic; font-weight: 480; }

.masthead-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.masthead-meta > div {
  padding: 1.1rem 1.2rem 1.3rem 0;
  border-right: 1px solid var(--line);
}
.masthead-meta > div:last-child { border-right: none; }
.masthead-meta > div + div { padding-left: 1.2rem; }
.masthead-meta dt { color: var(--ink-mute); margin-bottom: 0.45rem; }
.masthead-meta dd {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
}

/* ---------- Abstract strip ---------- */
.abstract {
  border-bottom: 1px solid var(--line-strong);
}
.abstract .container {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) 3fr;
  gap: 2rem;
  padding-top: clamp(2.5rem, 6vh, 4rem);
  padding-bottom: clamp(2.5rem, 6vh, 4rem);
}
.abstract-label { color: var(--accent); padding-top: 0.5rem; }
.abstract-body p {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.3vw, 1.7rem);
  font-weight: 420;
  line-height: 1.45;
  letter-spacing: -0.005em;
  max-width: 56ch;
}
.abstract-body p + p { margin-top: 1.2rem; }
.abstract-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.2rem;
}

/* ---------- Section scaffolding ---------- */
.section { padding: clamp(3.5rem, 9vh, 6.5rem) 0; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: clamp(2rem, 5vh, 3.5rem);
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--line-strong);
}
.section-head .kicker { color: var(--accent); display: block; margin-bottom: 0.8rem; }
.section-head h2 { font-size: clamp(1.9rem, 4.5vw, 3.1rem); }
.section-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.2rem;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.section-link:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Page headers (inner pages) ---------- */
.page-header {
  padding: clamp(3rem, 8vh, 5.5rem) 0 clamp(2rem, 5vh, 3rem);
  border-bottom: 1px solid var(--line-strong);
}
.page-header .kicker { color: var(--accent); display: block; margin-bottom: 1rem; }
.page-title {
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  letter-spacing: -0.025em;
}
.page-subtitle {
  margin-top: 1.3rem;
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 52ch;
}

/* ---------- Project ledger (index rows) ---------- */
.ledger-cols {
  display: grid;
  grid-template-columns: 4rem 2.4fr 1.3fr 1fr 4.5rem;
  gap: 1.5rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line-strong);
  color: var(--ink-mute);
}

.ledger-row {
  display: grid;
  grid-template-columns: 4rem 2.4fr 1.3fr 1fr 4.5rem;
  gap: 1.5rem;
  align-items: center;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  position: relative;
  transition: color var(--t-fast);
}
.ledger-row::before {
  content: "";
  position: absolute;
  inset: 0 calc(var(--pad) * -1);
  background: var(--ink);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--t-med);
  z-index: 0;
}
.ledger-row > * { position: relative; z-index: 1; }
.ledger-row:hover::before { transform: scaleY(1); transform-origin: top; }
.ledger-row:hover { color: var(--paper); }
.ledger-row:hover .ledger-num { color: var(--accent); }
.ledger-row:hover .ledger-context,
.ledger-row:hover .ledger-stack { color: color-mix(in srgb, var(--paper) 70%, transparent); }
.ledger-row:hover .ledger-arrow { transform: translateX(6px); color: var(--accent); }

.ledger-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-mute);
  transition: color var(--t-fast);
}
.ledger-title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  font-weight: 540;
  letter-spacing: -0.01em;
  line-height: 1.15;
}
.ledger-context, .ledger-stack {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  line-height: 1.7;
  transition: color var(--t-fast);
}
.ledger-arrow {
  justify-self: end;
  font-size: 1.3rem;
  transition: transform var(--t-med), color var(--t-fast);
}

/* ---------- Featured cards (home) ---------- */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line-strong);
  background: var(--line);
  gap: 1px;
}

.feature-card {
  background: var(--paper);
  padding: 2rem 1.8rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  min-height: 330px;
  position: relative;
  overflow: hidden;
  transition: background-color var(--t-med);
}
.feature-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med);
}
.feature-card:hover { background: var(--paper-high); }
.feature-card:hover::after { transform: scaleX(1); }
.feature-card:hover .feature-arrow { transform: translate(4px, -4px); color: var(--accent); }

.feature-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  color: var(--ink-mute);
}
.feature-arrow { font-size: 1.2rem; color: var(--ink-mute); transition: transform var(--t-med), color var(--t-fast); }
.feature-card h3 {
  font-size: 1.55rem;
  font-weight: 540;
}
.feature-card p {
  font-size: 0.95rem;
  color: var(--ink-soft);
  flex-grow: 1;
}
.feature-card .tag-row { margin-top: auto; }

/* ---------- Tags ---------- */
.tag-row { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.32rem 0.6rem;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  white-space: nowrap;
  transition: border-color var(--t-fast), color var(--t-fast);
}
a.tag:hover, .tag.linked:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Capabilities strip (home) ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line-strong);
}
.cap-cell {
  background: var(--paper);
  padding: 2.2rem 1.8rem 2.4rem;
}
.cap-cell .cap-num { color: var(--accent); display: block; margin-bottom: 1.4rem; }
.cap-cell h3 {
  font-size: 1.45rem;
  margin-bottom: 0.9rem;
}
.cap-cell ul { list-style: none; }
.cap-cell li {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--line);
}
.cap-cell li:last-child { border-bottom: none; }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3.5rem, 9vh, 6rem) 0;
}
.cta-band .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.cta-band h2 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  max-width: 18ch;
}
.cta-band .btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.cta-band .btn-primary:hover {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--accent);
}

/* ---------- About page ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 2.2fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}

.about-portrait {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line-strong);
  background:
    repeating-linear-gradient(-45deg, transparent 0 10px, color-mix(in srgb, var(--line) 45%, transparent) 10px 11px),
    var(--paper-high);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.about-portrait img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-portrait .monogram {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(4rem, 8vw, 6.5rem);
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
}
.about-portrait figcaption {
  position: absolute;
  bottom: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  background: var(--paper-high);
  border: 1px solid var(--line);
  padding: 0.3rem 0.7rem;
}

.about-bio h2 {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  margin-bottom: 1.6rem;
}
.about-bio p {
  color: var(--ink-soft);
  max-width: 62ch;
  margin-bottom: 1.2rem;
}
.about-bio strong { color: var(--ink); font-weight: 600; }
.about-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }

/* ---------- Experience ---------- */
.xp-list { border-top: 1px solid var(--line-strong); }
.xp-entry {
  display: grid;
  grid-template-columns: minmax(150px, 1fr) 2.6fr;
  gap: 1.5rem;
  padding: 2.2rem 0;
  border-bottom: 1px solid var(--line);
}
.xp-when {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 0.45rem;
}
.xp-role h3 {
  font-size: 1.55rem;
  margin-bottom: 0.2rem;
}
.xp-role .xp-company {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
.xp-role > p {
  margin-top: 0.9rem;
  color: var(--ink-soft);
  max-width: 60ch;
}
.xp-worked {
  margin-top: 1.2rem;
}
.xp-worked .mono { color: var(--ink-mute); display: block; margin-bottom: 0.6rem; }

/* ---------- Education ---------- */
.edu-card {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 1.8rem 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}
.edu-card h3 { font-size: 1.4rem; }
.edu-card .edu-degree { color: var(--ink-soft); margin-top: 0.2rem; }
.edu-card .edu-loc {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ---------- Skills ---------- */
.skill-group { margin-bottom: 2.4rem; }
.skill-group:last-child { margin-bottom: 0; }
.skill-group-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
}
.skill-group-head .mono { color: var(--accent); }
.skill-group-head h3 { font-size: 1.3rem; }
.skill-group-head::after {
  content: "";
  flex-grow: 1;
  height: 1px;
  background: var(--line);
  align-self: center;
}

/* ---------- Project detail page ---------- */
.project-hero {
  padding: clamp(2.5rem, 7vh, 5rem) 0 clamp(2rem, 5vh, 3rem);
  border-bottom: 1px solid var(--line-strong);
}
.project-hero .crumb {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-mute);
  margin-bottom: 1.6rem;
  transition: color var(--t-fast);
}
.project-hero .crumb:hover { color: var(--accent); }
.project-hero .proj-num { color: var(--accent); display: block; margin-bottom: 0.9rem; }
.project-hero h1 {
  font-size: clamp(2.4rem, 6.5vw, 4.6rem);
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.project-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}
.project-meta > div {
  padding: 1.2rem 1.2rem 1.4rem 0;
  border-right: 1px solid var(--line);
}
.project-meta > div + div { padding-left: 1.2rem; }
.project-meta > div:last-child { border-right: none; }
.project-meta dt { color: var(--ink-mute); margin-bottom: 0.5rem; }
.project-meta dd { font-size: 0.95rem; font-weight: 500; }
.project-meta .tag-row { margin-top: 0.2rem; }

.project-body {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) 3fr;
  gap: 2rem;
  padding: clamp(2.5rem, 6vh, 4rem) 0;
  border-bottom: 1px solid var(--line);
}
.project-body:last-of-type { border-bottom: none; }
.project-body .body-label { color: var(--accent); padding-top: 0.4rem; }
.project-body .lede {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  font-weight: 420;
  line-height: 1.5;
  max-width: 58ch;
}
.project-body p + p { margin-top: 1rem; }

.highlight-list { list-style: none; counter-reset: hl; }
.highlight-list li {
  counter-increment: hl;
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding: 1.2rem 0;
  border-bottom: 1px dashed var(--line);
  color: var(--ink-soft);
  max-width: 64ch;
}
.highlight-list li:first-child { padding-top: 0; }
.highlight-list li:last-child { border-bottom: none; }
.highlight-list li::before {
  content: counter(hl, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  padding-top: 0.3rem;
}

/* ---------- Project figures ---------- */
.figure-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.figure-grid:has(.project-figure:only-child) { grid-template-columns: 1fr; }

.project-figure {
  border: 1px solid var(--line-strong);
  background: var(--paper-high);
  padding: 0.65rem 0.65rem 0.8rem;
  margin: 0;
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.project-figure:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--line);
}
.project-figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}
.project-figure figcaption {
  padding-top: 0.7rem;
  color: var(--ink-mute);
  letter-spacing: 0.12em;
}

@media (max-width: 900px) {
  .figure-grid { grid-template-columns: 1fr; }
}

.project-pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line-strong);
}
.pagination-link {
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: background-color var(--t-fast), color var(--t-fast);
}
.pagination-link:first-child { border-right: 1px solid var(--line); }
.pagination-link.next { text-align: right; align-items: flex-end; }
.pagination-link:hover { background: var(--ink); color: var(--paper); }
.pagination-link:hover .mono { color: var(--accent); }
.pagination-link .mono { color: var(--ink-mute); }
.pagination-link .pagination-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 540;
}
.pagination-link.disabled { pointer-events: none; opacity: 0.35; }

.not-found {
  text-align: center;
  padding: clamp(4rem, 12vh, 8rem) 0;
}
.not-found h1 { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: 1rem; }
.not-found p { color: var(--ink-soft); margin-bottom: 2rem; }

/* ---------- Contact page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.contact-info h2 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  margin-bottom: 1.2rem;
}
.contact-info > p { color: var(--ink-soft); margin-bottom: 2.2rem; max-width: 40ch; }

.contact-channels { border-top: 1px solid var(--line-strong); }
.contact-link {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1.1rem 0.2rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  transition: color var(--t-fast), padding-left var(--t-fast);
}
.contact-link svg { width: 17px; height: 17px; flex-shrink: 0; color: var(--ink-mute); transition: color var(--t-fast); }
.contact-link:hover { color: var(--accent); padding-left: 0.7rem; }
.contact-link:hover svg { color: var(--accent); }

/* ---------- Forms ---------- */
.contact-form {
  border: 1px solid var(--line-strong);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--paper-high);
}

.form-group { margin-bottom: 1.4rem; }
.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.55rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  padding: 0.6rem 0.1rem;
  transition: border-color var(--t-fast);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-bottom-color: var(--accent);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--ink-mute); opacity: 0.7; }
.form-group textarea { min-height: 120px; resize: vertical; }

.form-status {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.8rem 1rem;
  margin-bottom: 1.2rem;
  border: 1px solid;
}
.form-status.success { display: block; color: var(--ok); border-color: var(--ok); }
.form-status.error { display: block; color: var(--err); border-color: var(--err); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line-strong);
  padding: 2.6rem 0 2.2rem;
}
.footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
}
.footer-colophon {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  line-height: 2;
}
.footer-social { display: flex; gap: 0.6rem; }
.icon-link {
  width: 38px; height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink-soft);
  transition: color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}
.icon-link svg { width: 16px; height: 16px; }
.icon-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
}

/* ---------- Hero social row ---------- */
.hero-social { display: flex; gap: 0.6rem; }

/* ---------- Marquee divider ---------- */
.marquee {
  overflow: hidden;
  border-block: 1px solid var(--line-strong);
  padding: 0.85rem 0;
  white-space: nowrap;
}
.marquee-track {
  display: inline-flex;
  gap: 2.5rem;
  animation: marquee 30s linear infinite;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.marquee-track .sep { color: var(--accent); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .masthead-meta { grid-template-columns: 1fr 1fr; }
  .masthead-meta > div:nth-child(2n) { border-right: none; }
  .masthead-meta > div:nth-child(2) ~ div { border-top: 1px solid var(--line); }
  .masthead-meta > div:nth-child(odd) { padding-left: 0; }

  .featured-grid, .cap-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }

  .ledger-cols { display: none; }
  .ledger-row {
    grid-template-columns: 3rem 1fr 2rem;
    grid-template-areas:
      "num title arrow"
      ".   context arrow"
      ".   stack arrow";
    row-gap: 0.4rem;
  }
  .ledger-num { grid-area: num; }
  .ledger-title { grid-area: title; }
  .ledger-context { grid-area: context; }
  .ledger-stack { grid-area: stack; }
  .ledger-arrow { grid-area: arrow; align-self: center; }

  .about-grid { grid-template-columns: 1fr; }
  .about-portrait { position: relative; top: auto; max-width: 300px; }

  .project-meta { grid-template-columns: 1fr 1fr; }
  .project-meta > div:nth-child(2n) { border-right: none; }
  .project-meta > div:nth-child(2) ~ div { border-top: 1px solid var(--line); }
  .project-meta > div:nth-child(odd) { padding-left: 0; }

  .abstract .container,
  .project-body { grid-template-columns: 1fr; gap: 1rem; }

  .xp-entry { grid-template-columns: 1fr; gap: 0.6rem; }

  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line-strong);
    padding: 0.5rem var(--pad) 1.2rem;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--t-med), opacity var(--t-med);
    z-index: 99;
  }
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-menu li { border-bottom: 1px solid var(--line); }
  .nav-menu li:last-child { border-bottom: none; }
  .nav-link { display: block; padding: 1rem 0.2rem; font-size: 0.8rem; }
  .nav-link::after { display: none; }

  .project-pagination { grid-template-columns: 1fr; }
  .pagination-link:first-child { border-right: none; border-bottom: 1px solid var(--line); }
}