/* ================================================================
   SHARED STYLESHEET — Muhammad Imran
   Used by index.html and all sub-pages under /projects, /solutions,
   and /tutoring. Any page-specific styles live inline on that page.
   ================================================================ */

/* ================================================================
   1. DESIGN TOKENS
   ================================================================ */
:root {
  /* Palette — warm paper, deep ink, three refined accents */
  --paper: #f4efe4;
  --sheet: #fbf6ea;
  --ink: #171310;
  --ink-soft: #2a2520;
  --muted: #6d665c;
  --muted-soft: #958d80;
  --line: #ddd4c2;
  --line-soft: #e9e2d2;

  /* Pillar accents — reordered by priority */
  /* 1. Research — deep ink-navy, serious, technical */
  --research: #2c4768;
  --research-soft: #e4e9f0;
  --research-tint: #b6c4d4;

  /* 2. Frontend — forest sage, aesthetic */
  --frontend: #2d5a4a;
  --frontend-soft: #e3ede8;
  --frontend-tint: #bfd2c9;

  /* 3. Tutoring — amber gold, scholarly */
  --tutoring: #8a5f1e;
  --tutoring-soft: #f1e6d0;
  --tutoring-tint: #dbc08e;

  /* Default pillar — overridden per section */
  --pillar: var(--research);
  --pillar-soft: var(--research-soft);
  --pillar-tint: var(--research-tint);

  /* Typography */
  --serif: 'Fraunces', 'Iowan Old Style', 'Palatino Linotype', Georgia, 'Times New Roman', serif;
  --sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'Geist Mono', 'SF Mono', 'JetBrains Mono', Consolas, 'Liberation Mono', monospace;

  /* Layout */
  --max-width: 1180px;
  --max-width-narrow: 780px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --nav-min-height: 68px;
  --radius: 14px;
  --radius-sm: 8px;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --fast: 180ms;
  --med: 280ms;
  --slow: 480ms;
}

[data-theme="dark"] {
  --paper: #15120e;
  --sheet: #1f1a14;
  --ink: #f1ece0;
  --ink-soft: #ddd5c6;
  --muted: #a89f8f;
  --muted-soft: #7d7466;
  --line: #3a342b;
  --line-soft: #2e2921;

  --research: #8eb6e0;
  --research-soft: #1e2d44;
  --research-tint: #3a4f6a;

  --frontend: #86c9a8;
  --frontend-soft: #1e362c;
  --frontend-tint: #3b5a4c;

  --tutoring: #d8a757;
  --tutoring-soft: #332717;
  --tutoring-tint: #5a4223;
}

/* Per-pillar accent — applied by data attribute */
[data-pillar="research"]  { --pillar: var(--research);  --pillar-soft: var(--research-soft);  --pillar-tint: var(--research-tint);  }
[data-pillar="frontend"]  { --pillar: var(--frontend);  --pillar-soft: var(--frontend-soft);  --pillar-tint: var(--frontend-tint);  }
[data-pillar="tutoring"]  { --pillar: var(--tutoring);  --pillar-soft: var(--tutoring-soft);  --pillar-tint: var(--tutoring-tint);  }

/* ================================================================
   2. 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(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color var(--med) var(--ease-out), color var(--med) var(--ease-out);
}
body.nav-open { overflow: hidden; }

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { border: 0; background: none; font: inherit; cursor: pointer; color: inherit; }
input, textarea, select, button { font: inherit; }
h1, h2, h3, h4, h5, h6 { font-weight: 400; }
ul, ol { list-style: none; }

::selection { background: var(--pillar); color: var(--paper); }

:focus-visible {
  outline: 2px solid var(--pillar);
  outline-offset: 3px;
  border-radius: 2px;
}

.sr-only {
  position: absolute !important;
  width: 1px !important; height: 1px !important;
  padding: 0 !important; margin: -1px !important;
  overflow: hidden !important; clip: rect(0,0,0,0) !important;
  white-space: nowrap !important; border: 0 !important;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--fast) var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* ================================================================
   3. TYPOGRAPHY
   ================================================================ */
.display {
  font-family: var(--serif);
  font-weight: 400;
  font-variation-settings: "opsz" 96, "SOFT" 30;
  letter-spacing: -0.015em;
  line-height: 1.05;
  color: var(--ink);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--muted);
  text-transform: lowercase;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 3rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.section-header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 56px;
  height: 1px;
  background: var(--pillar);
}
.section-header__left { display: flex; flex-direction: column; gap: 0.25rem; }
.section-header__eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--pillar);
  text-transform: lowercase;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.section-header__eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--pillar);
}
.section-header__title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.9rem, 3.2vw, 2.5rem);
  font-variation-settings: "opsz" 36;
  color: var(--ink);
  line-height: 1.15;
}
.section-header__title em {
  font-family: var(--serif);
  font-style: italic;
  color: var(--pillar);
  font-variation-settings: "opsz" 36;
}
.section-header__meta {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--muted);
  text-align: right;
  align-self: flex-end;
}

.lede {
  font-family: var(--serif);
  font-size: clamp(1.12rem, 1.6vw, 1.28rem);
  line-height: 1.55;
  color: var(--ink-soft);
  font-variation-settings: "opsz" 18;
}

.prose p { margin-bottom: 1.25rem; color: var(--ink-soft); line-height: 1.75; }
.prose p:last-child { margin-bottom: 0; }
.prose em {
  font-family: var(--serif);
  font-style: italic;
  color: var(--pillar);
  font-variation-settings: "opsz" 18;
}

.underline-link {
  position: relative;
  background-image: linear-gradient(var(--ink), var(--ink));
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  padding-bottom: 2px;
  transition: color var(--fast) var(--ease-out), background-image var(--fast) var(--ease-out);
}
.underline-link:hover {
  color: var(--pillar);
  background-image: linear-gradient(var(--pillar), var(--pillar));
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--ink);
  font-size: 0.9rem;
  transition: color var(--fast) var(--ease-out);
}
.arrow-link .arrow {
  display: inline-block;
  transition: transform var(--med) var(--ease-out);
}
.arrow-link:hover { color: var(--pillar); }
.arrow-link:hover .arrow { transform: translate(3px, -3px); }

/* ================================================================
   4. LAYOUT
   ================================================================ */
.wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--gutter); }
.wrap--narrow { max-width: var(--max-width-narrow); }

section { padding: clamp(4rem, 9vw, 7rem) 0; position: relative; }
section + section { border-top: 1px solid var(--line); }

.subsection {
  margin-top: clamp(3rem, 6vw, 5rem);
  padding-top: clamp(3rem, 6vw, 5rem);
  border-top: 1px solid var(--line);
}
.subsection__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}
.subsection__title {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.4rem, 2.3vw, 1.7rem);
  font-variation-settings: "opsz" 30;
  color: var(--ink);
}
.subsection__meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: lowercase;
}

/* ================================================================
   5. NAV (desktop)
   ================================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--nav-min-height);
  background: rgba(244, 239, 228, 0);
  border-bottom: 1px solid transparent;
  transition: background-color var(--med) var(--ease-out), border-color var(--med) var(--ease-out);
}
[data-theme="dark"] .nav { background: rgba(21, 18, 14, 0); }
.nav.is-scrolled {
  background: rgba(244, 239, 228, 0.88);
  border-bottom-color: var(--line);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
}
[data-theme="dark"] .nav.is-scrolled { background: rgba(21, 18, 14, 0.88); }

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--nav-min-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
}
.brand__mark {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--frontend-soft);
  border: 1px solid var(--frontend);
  display: grid;
  place-items: center;
  color: var(--frontend);
  font-family: var(--serif);
  font-weight: 500;
  font-size: 0.84rem;
  font-variation-settings: "opsz" 14;
  flex-shrink: 0;
}
.brand__name {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-variation-settings: "opsz" 18;
  white-space: nowrap;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.9rem;
}
.nav__links a {
  position: relative;
  padding: 0.3rem 0;
  color: var(--ink-soft);
  transition: color var(--fast) var(--ease-out);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -2px;
  width: 0; height: 1px;
  background: currentColor;
  transition: width var(--med) var(--ease-out), left var(--med) var(--ease-out);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after,
.nav__links a.is-active::after { width: 100%; left: 0; }
.nav__links a.is-active[data-accent="research"] { color: var(--research); }
.nav__links a.is-active[data-accent="frontend"] { color: var(--frontend); }
.nav__links a.is-active[data-accent="tutoring"] { color: var(--tutoring); }
.nav__links a.is-active { color: var(--ink); }

.nav__right { display: inline-flex; align-items: center; gap: 0.75rem; }

.theme-toggle {
  width: 38px; height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--ink-soft);
  transition: background var(--fast) var(--ease-out), color var(--fast) var(--ease-out);
}
.theme-toggle:hover { background: var(--line-soft); color: var(--ink); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .sun { display: none; }
[data-theme="dark"] .theme-toggle .sun { display: block; }
[data-theme="dark"] .theme-toggle .moon { display: none; }

.nav__mobile-toggle {
  display: none;
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--ink);
  transition: background var(--fast) var(--ease-out);
}
.nav__mobile-toggle:hover { background: var(--line-soft); }
.nav__mobile-toggle svg { width: 22px; height: 22px; }

/* ================================================================
   6. MOBILE MENU — full-screen overlay as its own element,
      OUTSIDE the nav stacking context
   ================================================================ */
.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background: var(--paper);
  z-index: 999;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--med) var(--ease-out), transform var(--med) var(--ease-out), visibility 0s linear var(--med);
  overflow-y: auto;
}
.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--med) var(--ease-out), transform var(--med) var(--ease-out), visibility 0s;
}
.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem var(--gutter);
  min-height: var(--nav-min-height);
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}
.mobile-menu__close {
  width: 42px; height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  transition: background var(--fast) var(--ease-out);
}
.mobile-menu__close:hover { background: var(--line-soft); }
.mobile-menu__close svg { width: 22px; height: 22px; }

.mobile-menu__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 2rem var(--gutter);
  gap: 0;
}
.mobile-menu__links {
  display: flex;
  flex-direction: column;
}
.mobile-menu__links a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--ink);
  font-variation-settings: "opsz" 30;
  transition: color var(--fast) var(--ease-out);
}
.mobile-menu__links a:hover { color: var(--pillar); }
.mobile-menu__links a .num {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  flex-shrink: 0;
}
.mobile-menu__footer {
  margin-top: auto;
  padding: 1.5rem var(--gutter) 2rem;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-shrink: 0;
}
.mobile-menu__footer-left {
  font-family: var(--serif);
  font-style: italic;
  color: var(--muted);
  font-size: 0.95rem;
  font-variation-settings: "opsz" 14;
}

/* ================================================================
   7. BUTTONS
   ================================================================ */
.btn {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
  --btn-border: var(--ink);
  --btn-reveal: var(--paper);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 1.4rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  border-radius: 999px;
  overflow: hidden;
  cursor: pointer;
  transition: color var(--med) var(--ease-out), background-color var(--med) var(--ease-out), border-color var(--med) var(--ease-out);
  font-family: var(--sans);
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--btn-reveal);
  transform: translateX(-101%);
  transition: transform var(--med) var(--ease-out);
  z-index: 0;
}
.btn__inner {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.btn__text { transition: transform var(--med) var(--ease-out); }
.btn__arrow {
  position: absolute;
  right: -1rem;
  opacity: 0;
  transition: transform var(--med) var(--ease-out), opacity var(--med) var(--ease-out);
}
.btn:hover { color: var(--ink); }
.btn:hover::before { transform: translateX(0); }
.btn:hover .btn__text { transform: translateX(-0.6rem); }
.btn:hover .btn__arrow { opacity: 1; transform: translateX(-0.7rem); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-border: var(--ink);
  --btn-reveal: var(--ink);
}
.btn--ghost:hover { color: var(--paper); }

.btn--pillar {
  --btn-bg: var(--pillar);
  --btn-fg: var(--paper);
  --btn-border: var(--pillar);
  --btn-reveal: var(--paper);
}
.btn--pillar:hover { color: var(--pillar); }

/* ================================================================
   8. HERO (main page)
   ================================================================ */
.hero {
  padding-top: clamp(3rem, 7vw, 5rem);
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
  position: relative;
}
.hero__eyebrow { margin-bottom: 1.75rem; }
.hero__headline {
  font-size: clamp(2.15rem, 5.8vw, 4.6rem);
  max-width: 18ch;
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}
.hero__headline em {
  font-style: italic;
  font-variation-settings: "opsz" 144, "SOFT" 50;
  color: var(--research);
}
.hero__headline .ampersand {
  font-style: italic;
  color: var(--muted);
  font-variation-settings: "opsz" 144, "SOFT" 100;
  padding: 0 0.05em;
}
.hero__lede { max-width: 58ch; margin-bottom: 2.25rem; }
.hero__cta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.available {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.87rem;
  color: var(--frontend);
}
.available .dot {
  width: 7px; height: 7px;
  background: var(--frontend);
  border-radius: 50%;
  position: relative;
}
.available .dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--frontend);
  opacity: 0.25;
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { transform: scale(0.8); opacity: 0.5; }
  100% { transform: scale(2); opacity: 0; }
}
.hero__divider { width: 1px; height: 16px; background: var(--line); }
.hero__quick-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.87rem;
}

/* ================================================================
   9. PILLARS OVERVIEW
   ================================================================ */
.pillars { padding: clamp(3rem, 6vw, 5rem) 0 clamp(4rem, 9vw, 7rem); }
.pillars__intro { max-width: 62ch; margin-bottom: 3rem; }
.pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2.5vw, 1.75rem);
}

.pillar-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.75rem 1.5rem;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--med) var(--ease-out), transform var(--med) var(--ease-out);
  position: relative;
  overflow: hidden;
  min-height: 240px;
}
.pillar-card::before {
  content: "";
  position: absolute;
  left: 1.75rem;
  right: 1.75rem;
  top: 0;
  height: 2px;
  background: var(--pillar);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--slow) var(--ease-out);
}
.pillar-card.is-primary::before {
  transform: scaleX(1);
}
.pillar-card:hover {
  border-color: var(--pillar);
  transform: translateY(-2px);
}
.pillar-card:hover::before { transform: scaleX(1); }
.pillar-card__num {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: lowercase;
  margin-bottom: 1rem;
  display: flex;
  justify-content: space-between;
}
.pillar-card__num .rank {
  color: var(--pillar);
  font-style: normal;
}
.pillar-card__title {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-variation-settings: "opsz" 30;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 0.5rem;
}
.pillar-card__title em {
  font-family: var(--serif);
  font-style: italic;
  color: var(--pillar);
  font-variation-settings: "opsz" 30;
}
.pillar-card__title .pillar-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--pillar);
  vertical-align: middle;
  margin-right: 0.4rem;
  transform: translateY(-2px);
}
.pillar-card__desc {
  font-size: 0.93rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex: 1;
}
.pillar-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: lowercase;
  letter-spacing: 0.04em;
}
.pillar-card__footer .arrow {
  font-size: 0.9rem;
  transition: transform var(--med) var(--ease-out);
  color: var(--pillar);
}
.pillar-card:hover .pillar-card__footer .arrow { transform: translate(3px, -3px); }

/* ================================================================
   10. WORK GRID (Frontend)
   ================================================================ */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
.work-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  cursor: pointer;
}
.work-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--med) var(--ease-out);
}
.work-card__media::before {
  content: attr(data-fallback);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.6rem;
  color: var(--muted);
  font-variation-settings: "opsz" 36;
  padding: 1rem;
  text-align: center;
}
.work-card__media.m-frontend { background: var(--frontend-soft); }
.work-card__media.m-frontend::before { color: var(--frontend); }
.work-card__media.m-tutoring { background: var(--tutoring-soft); }
.work-card__media.m-tutoring::before { color: var(--tutoring); }
.work-card__media.m-research { background: var(--research-soft); }
.work-card__media.m-research::before { color: var(--research); }

.work-card__media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform var(--slow) var(--ease-out);
}
.work-card__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: rgba(23, 19, 16, 0);
  display: grid;
  place-items: center;
  opacity: 0;
  transition: background var(--med) var(--ease-out), opacity var(--med) var(--ease-out);
}
.work-card__overlay span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--paper);
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--paper);
  transform: translateY(6px);
  transition: transform var(--med) var(--ease-out);
}
.work-card:hover .work-card__media { border-color: var(--ink-soft); }
.work-card:hover .work-card__media img { transform: scale(1.04); }
.work-card:hover .work-card__overlay { opacity: 1; background: rgba(23, 19, 16, 0.42); }
.work-card:hover .work-card__overlay span { transform: translateY(0); }

.work-card__body { display: flex; flex-direction: column; gap: 0.35rem; }
.work-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-transform: lowercase;
}
.work-card__title {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-variation-settings: "opsz" 24;
  color: var(--ink);
  line-height: 1.25;
  margin-top: 0.2rem;
}
.work-card__desc {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.55;
  margin-top: 0.1rem;
}
.work-card__tags {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  margin-top: 0.5rem;
}
.work-card__tags span {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--sheet);
}

/* ================================================================
   11. STACK (shared layout across sections)
   ================================================================ */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
.stack-group__label {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
  font-variation-settings: "opsz" 18;
}
.stack-group__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
}
.stack-group__list li {
  font-size: 0.95rem;
  color: var(--ink);
  position: relative;
  padding-right: 0.95rem;
}
.stack-group__list li:not(:last-child)::after {
  content: "·";
  position: absolute;
  right: 0;
  color: var(--muted);
}

/* ================================================================
   12. RESEARCH — project cards, areas
   ================================================================ */
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}
.research-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: border-color var(--med) var(--ease-out), transform var(--med) var(--ease-out);
  min-height: 300px;
}
.research-card:hover { transform: translateY(-2px); border-color: var(--research); }
.research-card__label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--research);
  text-transform: lowercase;
  margin-bottom: 1.25rem;
}
.research-card__label::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--research);
}
.research-card__title {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-variation-settings: "opsz" 28;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 0.4rem;
}
.research-card__org {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1rem;
  font-variation-settings: "opsz" 14;
}
.research-card__desc {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.65;
  margin-bottom: 1.25rem;
  flex: 1;
}
.research-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.research-card__tags span {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--research);
  padding: 0.15rem 0.5rem;
  background: var(--research-soft);
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.areas-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 2vw, 1.75rem) clamp(2rem, 4vw, 3rem);
}
.area-item {
  display: flex;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line-soft);
}
.area-item__num {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--pillar);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  padding-top: 0.15rem;
}
.area-item__body { flex: 1; }
.area-item__title {
  font-family: var(--serif);
  font-size: 1.02rem;
  color: var(--ink);
  margin-bottom: 0.15rem;
  font-variation-settings: "opsz" 18;
}
.area-item__desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.55;
}

/* ================================================================
   13. TUTORING — service cards, class grid, solution cards
   ================================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}
.service-card {
  display: flex;
  flex-direction: column;
  padding: 2rem 1.75rem 1.75rem;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: border-color var(--med) var(--ease-out), transform var(--med) var(--ease-out);
  min-height: 340px;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  height: 3px;
  width: 40%;
  background: var(--tutoring);
  transition: width var(--slow) var(--ease-out);
}
.service-card:hover { transform: translateY(-2px); border-color: var(--tutoring); }
.service-card:hover::before { width: 100%; }
.service-card__icon {
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  color: var(--tutoring);
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.6rem;
  background: var(--tutoring-soft);
  border-radius: 50%;
  margin-bottom: 1.25rem;
  font-variation-settings: "opsz" 36;
}
.service-card__title {
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--ink);
  font-variation-settings: "opsz" 30;
  margin-bottom: 0.5rem;
}
.service-card__desc {
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex: 1;
}
.service-card__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.service-card__list li {
  font-size: 0.88rem;
  color: var(--muted);
  padding-left: 1rem;
  position: relative;
}
.service-card__list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--tutoring);
}
.service-card__footer {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--tutoring);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
}
.service-card__footer .arrow {
  transition: transform var(--med) var(--ease-out);
}
.service-card:hover .service-card__footer .arrow { transform: translate(3px, -3px); }

/* Classes grid */
.classes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(0.75rem, 1.5vw, 1.25rem);
}
.class-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.25rem 1.25rem;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--med) var(--ease-out), transform var(--med) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.class-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  height: 2px;
  width: 40%;
  background: var(--tutoring);
  transition: width var(--slow) var(--ease-out);
}
.class-card:hover { transform: translateY(-2px); border-color: var(--tutoring); }
.class-card:hover::before { width: 100%; }
.class-card__number {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--tutoring);
  font-variation-settings: "opsz" 60;
  margin-bottom: 0.25rem;
}
.class-card__number .suffix {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--muted);
  font-variation-settings: "opsz" 18;
  margin-left: 0.1rem;
  vertical-align: super;
}
.class-card__label {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 0.9rem;
  font-variation-settings: "opsz" 14;
}
.class-card__curricula {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.9rem;
}
.class-card__curricula span {
  font-family: var(--mono);
  font-size: 0.66rem;
  color: var(--tutoring);
  padding: 0.15rem 0.5rem;
  background: var(--tutoring-soft);
  border-radius: 999px;
  letter-spacing: 0.04em;
}
.class-card__subjects {
  font-size: 0.86rem;
  color: var(--ink-soft);
  line-height: 1.5;
  flex: 1;
}
.class-card__footer {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: lowercase;
  display: flex;
  justify-content: space-between;
}

/* Solutions grid */
.solutions-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: clamp(1rem, 2vw, 1.5rem);
}
.solution-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: border-color var(--med) var(--ease-out), transform var(--med) var(--ease-out);
  min-height: 240px;
}
.solution-card:hover { transform: translateY(-2px); border-color: var(--tutoring); }
.solution-card.is-featured {
  background: linear-gradient(135deg, var(--tutoring-soft) 0%, var(--sheet) 80%);
  border-color: var(--tutoring-tint);
}
.solution-card__status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tutoring);
  margin-bottom: 1rem;
}
.solution-card__status .indicator {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tutoring);
}
.solution-card.is-soon .solution-card__status { color: var(--muted); }
.solution-card.is-soon .solution-card__status .indicator { background: var(--muted); }
.solution-card__title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.35rem;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 0.5rem;
  font-variation-settings: "opsz" 30;
}
.solution-card__sub {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: lowercase;
  margin-bottom: 0.85rem;
}
.solution-card__desc {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex: 1;
}
.solution-card__link { align-self: flex-start; }

/* ================================================================
   14. ABOUT — timeline (NEW DESIGN, no chain)
   ================================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.about-portrait {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  margin-bottom: 2rem;
}
.about-portrait__img {
  width: 76px; height: 76px;
  border-radius: 50%;
  background: var(--frontend-soft);
  border: 1px solid var(--line);
  overflow: hidden;
  flex-shrink: 0;
}
.about-portrait__img img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.about-portrait__text .name {
  font-family: var(--serif);
  font-size: 1.18rem;
  color: var(--ink);
}
.about-portrait__text .role {
  font-family: var(--serif);
  font-style: italic;
  color: var(--muted);
  font-size: 0.93rem;
}

/* Timeline — simple stacked sections, NO vertical chain */
.timeline {
  display: flex;
  flex-direction: column;
}
.timeline__group {
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}
.timeline__group:first-child { border-top: 1px solid var(--ink); padding-top: 1.5rem; }
.timeline__group:last-child { padding-bottom: 0; }
.timeline__label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: lowercase;
  margin-bottom: 1rem;
}
.timeline__item { margin-bottom: 1.25rem; }
.timeline__item:last-child { margin-bottom: 0; }
.timeline__date {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 0.2rem;
  letter-spacing: 0.02em;
}
.timeline__title {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
  font-variation-settings: "opsz" 18;
  line-height: 1.35;
}
.timeline__sub {
  font-size: 0.87rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

/* ================================================================
   15. CONTACT
   ================================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.contact-intro { margin-bottom: 2rem; }
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  width: 100%;
}
.field { display: flex; flex-direction: column; gap: 0.4rem; width: 100%; }
.field label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--muted);
  text-transform: lowercase;
}
.field input, .field textarea, .field select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.95rem;
  transition: border-color var(--fast) var(--ease-out), box-shadow var(--fast) var(--ease-out);
  resize: vertical;
}
.field textarea { min-height: 140px; line-height: 1.6; }
.field input:hover, .field textarea:hover, .field select:hover { border-color: var(--muted); }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--research);
  box-shadow: 0 0 0 3px var(--research-soft);
}
.field input::placeholder, .field textarea::placeholder { color: var(--muted-soft); }

.contact-form__footer {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}
.contact-form__footer .btn { margin-left: auto; }
.form-status {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  flex: 1;
  min-width: 0;
}
.form-status.is-success { color: var(--frontend); }
.form-status.is-error { color: #9c3b52; }

.contact-card {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2rem);
}
.contact-card__label {
  font-family: var(--serif);
  font-style: italic;
  color: var(--muted);
  font-size: 1rem;
  margin-bottom: 1.25rem;
}
.contact-card__list li {
  border-top: 1px solid var(--line);
  padding: 0.9rem 0;
}
.contact-card__list li:first-child { border-top: 0; padding-top: 0; }
.contact-card__list li:last-child { padding-bottom: 0; }
.contact-card__list a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  transition: color var(--fast) var(--ease-out);
}
.contact-card__list a:hover { color: var(--research); }
.contact-card__list .label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: lowercase;
  width: 74px;
  flex-shrink: 0;
}
.contact-card__list .value {
  flex: 1;
  font-size: 0.93rem;
  overflow-wrap: anywhere;
}
.contact-card__list .arrow {
  color: var(--muted);
  transition: transform var(--med) var(--ease-out), color var(--fast) var(--ease-out);
}
.contact-card__list a:hover .arrow { transform: translate(2px, -2px); color: var(--research); }

/* ================================================================
   16. FOOTER
   ================================================================ */
.site-footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid var(--line);
}
.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--muted);
  font-variation-settings: "opsz" 14;
}
.site-footer__mark {
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

/* ================================================================
   17. REVEAL ANIMATIONS
   ================================================================ */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.hero .reveal { transition-delay: var(--d, 0ms); }

/* ================================================================
   18. SUB-PAGE COMPONENTS (used in /projects, /solutions, /tutoring)
   ================================================================ */
.page-hero {
  padding-top: clamp(3rem, 6vw, 4.5rem);
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--line);
}
.page-hero__eyebrow { margin-bottom: 1.25rem; display: flex; align-items: center; gap: 0.75rem; }
.page-hero__eyebrow .divider { color: var(--line); }
.page-hero__title {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-variation-settings: "opsz" 72;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
  max-width: 20ch;
}
.page-hero__title em {
  font-style: italic;
  color: var(--pillar);
  font-variation-settings: "opsz" 72, "SOFT" 50;
}
.page-hero__lede {
  max-width: 56ch;
  color: var(--ink-soft);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: lowercase;
  margin-bottom: 2rem;
  transition: color var(--fast) var(--ease-out);
}
.back-link:hover { color: var(--ink); }
.back-link .arrow { transition: transform var(--med) var(--ease-out); }
.back-link:hover .arrow { transform: translateX(-3px); }

.meta-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1rem, 2vw, 2rem);
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}
.meta-grid__item { display: flex; flex-direction: column; gap: 0.35rem; }
.meta-grid__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: lowercase;
}
.meta-grid__value {
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--ink);
  font-variation-settings: "opsz" 14;
}

.content-prose { max-width: 70ch; margin: 0 auto; }
.content-prose h2 {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.4rem, 2.2vw, 1.75rem);
  color: var(--ink);
  margin: 3rem 0 1rem;
  font-variation-settings: "opsz" 36;
}
.content-prose h3 {
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--ink);
  margin: 2rem 0 0.75rem;
  font-variation-settings: "opsz" 24;
}
.content-prose p { margin-bottom: 1.25rem; color: var(--ink-soft); line-height: 1.75; }
.content-prose ul { margin-bottom: 1.25rem; padding-left: 0; }
.content-prose ul li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--ink-soft);
}
.content-prose ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--pillar);
  font-family: var(--sans);
}
.content-prose blockquote {
  border-left: 3px solid var(--pillar);
  padding: 0.25rem 0 0.25rem 1.25rem;
  margin: 1.5rem 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--ink-soft);
  font-variation-settings: "opsz" 24;
}
.content-prose img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  margin: 2rem 0;
}
.content-prose code {
  font-family: var(--mono);
  font-size: 0.85em;
  color: var(--pillar);
  background: var(--pillar-soft);
  padding: 0.1em 0.4em;
  border-radius: 4px;
}
.content-prose pre {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink);
  line-height: 1.6;
}
.content-prose pre code {
  color: inherit;
  background: none;
  padding: 0;
}

.project-screenshot {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--sheet);
  margin: 2rem 0;
  aspect-ratio: 16 / 10;
}
.project-screenshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

/* Pair of next/prev navigation at bottom of sub-pages */
.page-footer-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}
.page-footer-nav a {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.25rem 1.5rem;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--med) var(--ease-out), transform var(--med) var(--ease-out);
}
.page-footer-nav a:hover { border-color: var(--pillar); transform: translateY(-2px); }
.page-footer-nav a.align-right { text-align: right; }
.page-footer-nav__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: lowercase;
}
.page-footer-nav__title {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
  font-variation-settings: "opsz" 18;
}

/* ================================================================
   19. RESPONSIVE
   ================================================================ */
@media (max-width: 1020px) {
  .classes-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: 1fr 1fr; }
  .solution-card.is-featured { grid-column: 1 / -1; }
  .research-grid, .services-grid { grid-template-columns: 1fr; }
  .meta-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 960px) {
  .pillars__grid { grid-template-columns: 1fr; gap: 1rem; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .areas-grid { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; align-items: flex-start; }
  .section-header__meta { text-align: left; align-self: flex-start; }
  .page-footer-nav { grid-template-columns: 1fr; }
  .page-footer-nav a.align-right { text-align: left; }
}

@media (max-width: 760px) {
  .nav__links { display: none; }
  .nav__right .btn { display: none; }
  .nav__mobile-toggle { display: inline-flex; }

  .work-grid, .classes-grid, .solutions-grid, .stack-grid { grid-template-columns: 1fr; }

  .hero__headline { max-width: 16ch; }
  .hero__cta { gap: 1rem; }
  .hero__quick-links { gap: 1rem; }

  .contact-form__footer { flex-direction: column; align-items: stretch; }
  .contact-form__footer .btn { margin-left: 0; width: 100%; }
  .form-status { order: 2; text-align: center; }

  .meta-grid { grid-template-columns: 1fr 1fr; gap: 1rem 1.5rem; }
}

@media (max-width: 420px) {
  body { font-size: 15px; }
  .brand__name { font-size: 0.98rem; }
  .pillar-card { min-height: 200px; }
  .solution-card, .research-card, .service-card { min-height: 240px; }
}

/* ================================================================
   20. REDUCED MOTION & PRINT
   ================================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .nav, .mobile-menu, .site-footer, .back-link { display: none; }
  section { padding: 1rem 0; border: none; }
  body { background: white; color: black; }
}


/* ================================================================
   21. v5 ADDITIONS — Hero portrait + typographic proof strip
   ================================================================ */

/* HERO — two-column grid with portrait on the right */
.hero { padding-top: clamp(2.5rem, 6vw, 4.5rem); padding-bottom: clamp(3rem, 6vw, 4.5rem); }
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(280px, 32vw, 400px);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: end;
}
.hero__copy { min-width: 0; padding-bottom: 1rem; }
.hero__actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.hero__signals { margin-bottom: 1.25rem; }
.hero__quick-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.87rem;
  flex-wrap: wrap;
}

/* Portrait column */
.hero__portrait {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  align-self: stretch;
  min-height: 480px;
  max-height: 640px;
}
.hero__portrait::before {
  /* Soft radial glow behind the figure to anchor it on the paper background */
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 110%;
  height: 86%;
  background: radial-gradient(ellipse at center bottom,
    color-mix(in srgb, var(--research-soft) 80%, transparent) 0%,
    color-mix(in srgb, var(--research-soft) 35%, transparent) 35%,
    transparent 70%);
  z-index: 0;
  border-radius: 50% 50% 0 0 / 50% 50% 0 0;
  pointer-events: none;
}
.hero__portrait img {
  position: relative;
  z-index: 1;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: bottom center;
  filter: drop-shadow(0 16px 32px rgba(23, 19, 16, 0.12));
}

/* ================================================================
   PROOF STRIP — typographic, four-column at-a-glance row
   ================================================================ */
.proof-strip {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--sheet);
}
.proof-strip + section { border-top: 0; }
.proof-strip__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
.proof-strip__item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  position: relative;
}
.proof-strip__item:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 4px;
  right: calc(clamp(1.5rem, 3vw, 2.5rem) / -2);
  width: 1px;
  background: var(--line);
}
.proof-strip__item dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: lowercase;
}
.proof-strip__item dd {
  font-family: var(--serif);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 1.45;
  color: var(--ink);
  font-variation-settings: "opsz" 16;
}
.proof-strip__item dd em {
  font-style: italic;
  color: var(--muted);
  font-variation-settings: "opsz" 14;
}
.proof-strip__item dd span {
  color: var(--muted-soft);
  font-family: var(--sans);
  margin: 0 0.15rem;
}

/* ================================================================
   RESPONSIVE — hero collapses gracefully on smaller screens
   ================================================================ */
@media (max-width: 960px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .hero__portrait {
    /* Hide the full-body portrait on phones — it's too tall to work well
       inline with the hero text. The text alone is the mobile hero. */
    display: none;
  }
  .hero__copy { padding-bottom: 0; }
  .proof-strip__grid { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
  .proof-strip__item:nth-child(2)::after { display: none; }
}

@media (max-width: 600px) {
  .proof-strip__grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .proof-strip__item::after { display: none; }
  .proof-strip__item:not(:last-child) {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--line);
  }
}

/* Project proof row — small chips below project page hero */
.project-proof-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}
.project-proof-row span {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--frontend);
  padding: 0.3rem 0.7rem;
  background: var(--frontend-soft);
  border: 1px solid color-mix(in srgb, var(--frontend) 22%, transparent);
  border-radius: 999px;
  letter-spacing: 0.02em;
}