/* ============================================================
   styles.css  —  wumonica.com
   Monica Wu · Forward-Deployed / AI Product Engineer

   Aesthetic: Obsidian (dark) + Vellum (light)
   Fonts: Cormorant Garamond (display) + DM Mono (mono/ui) + system-ui (body)
   Accent: violet (#8b5cf6 dark / #6d28d9 light)
   WCAG 2.2 AA compliant. Zero third-party requests.
   ============================================================ */

/* ---------- Self-hosted fonts ----------
   Download from Google Fonts → Cormorant Garamond + DM Mono.
   Place .woff2 (preferred) or .ttf files in /fonts/.
   Fallbacks — Georgia + system mono — render beautifully if
   font files are not yet uploaded. See DEPLOY.md → Fonts. */
/* Cormorant Garamond — VARIABLE fonts (the files you have).
   One block covers weights 300–700 upright; one covers italic. */
@font-face {
  font-family: 'Cormorant Garamond';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('../fonts/CormorantGaramond-VariableFont_wght.woff2') format('woff2-variations'),
       url('../fonts/CormorantGaramond-VariableFont_wght.ttf') format('truetype-variations'),
       url('../fonts/CormorantGaramond-VariableFont_wght.ttf') format('truetype');
}
@font-face {
  font-family: 'Cormorant Garamond';
  font-style: italic;
  font-weight: 300 700;
  font-display: swap;
  src: url('../fonts/CormorantGaramond-Italic-VariableFont_wght.woff2') format('woff2-variations'),
       url('../fonts/CormorantGaramond-Italic-VariableFont_wght.ttf') format('truetype-variations'),
       url('../fonts/CormorantGaramond-Italic-VariableFont_wght.ttf') format('truetype');
}
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: local('DM Mono'), local('DMMono-Regular'),
       url('../fonts/DMMono-Regular.woff2') format('woff2'),
       url('../fonts/DMMono-Regular.ttf') format('truetype');
}
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: local('DM Mono Medium'), local('DMMono-Medium'),
       url('../fonts/DMMono-Medium.woff2') format('woff2'),
       url('../fonts/DMMono-Medium.ttf') format('truetype');
}

/* ---------- Design tokens ---------- */
:root {
  /* Light — Vellum: warm cream, deep ink, violet accent */
  --c-bg:          #f5f0e8;
  --c-surface:     #ece4d2;
  --c-surface-2:   #e3d9c8;
  --c-text:        #1a1410;
  --c-text-2:      #4a3d34;
  --c-text-3:      #6b5d4e;
  --c-border:      rgba(26,20,16,0.10);
  --c-border-2:    rgba(26,20,16,0.18);
  --c-accent:      #6d28d9;
  --c-accent-h:    #5b21b6;
  --c-accent-soft: rgba(109,40,217,0.08);
  --c-accent-ink:  #6d28d9;   /* accent for TEXT — AA on bg + both surfaces */
  --c-focus:       #6d28d9;
  --c-grid:        rgba(109,40,217,0.04);

  --f-display: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --f-mono:    'DM Mono', ui-monospace, 'SFMono-Regular', 'Menlo', 'Consolas', monospace;
  --f-sans:    system-ui, -apple-system, 'Segoe UI', sans-serif;

  --t-hero-first: clamp(3rem, 7vw, 5.5rem);
  --t-hero-last:  clamp(5rem, 13vw, 9.5rem);
  --t-tagline:    clamp(1.05rem, 2.2vw, 1.3rem);
  --t-h2:         clamp(2rem, 4vw, 3.25rem);
  --t-h3:         1.25rem;
  --t-body:       1rem;
  --t-sm:         0.875rem;
  --t-xs:         0.75rem;

  --sp-1: 0.5rem;   --sp-2: 1rem;    --sp-3: 1.5rem;  --sp-4: 2rem;
  --sp-5: 3rem;     --sp-6: 4rem;    --sp-7: 6rem;    --sp-8: 8rem;

  --max-w: 1080px;
  --pad:   1.5rem;
  --nav-h: 64px;

  --r-sm: 4px;  --r-md: 8px;  --r-lg: 12px;  --r-pill: 999px;
  --tr-fast: 140ms cubic-bezier(.4,0,.2,1);
  --tr-base: 260ms cubic-bezier(.4,0,.2,1);
}

/* Dark — Obsidian */
[data-theme="dark"] {
  --c-bg:          #09090f;
  --c-surface:     #0f0f1c;
  --c-surface-2:   #13131f;
  --c-text:        #fafafa;
  --c-text-2:      #a1a1aa;
  --c-text-3:      #90909c;
  --c-border:      rgba(255,255,255,0.07);
  --c-border-2:    rgba(255,255,255,0.13);
  --c-accent:      #8b5cf6;
  --c-accent-h:    #a78bfa;
  --c-accent-soft: rgba(139,92,246,0.10);
  --c-accent-ink:  #a78bfa;   /* accent for TEXT — AA on bg + both surfaces */
  --c-focus:       #a78bfa;
  --c-grid:        rgba(139,92,246,0.04);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px); /* WCAG 2.4.11 — keep focused elements clear of sticky header */
  -webkit-text-size-adjust: 100%;
}
html[data-theme="light"] { color-scheme: light; }
html[data-theme="dark"]  { color-scheme: dark; }

body {
  font-family: var(--f-sans);
  font-size: var(--t-body);
  font-weight: 400;
  line-height: 1.7;
  color: var(--c-text);
  background-color: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color var(--tr-base), color var(--tr-base);
}

a {
  color: var(--c-text);
  text-decoration: underline;
  text-decoration-color: var(--c-border-2);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--tr-fast), text-decoration-color var(--tr-fast);
}
a:hover { color: var(--c-accent); text-decoration-color: var(--c-accent); }

:focus-visible {
  outline: 3px solid var(--c-focus);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

button { cursor: pointer; font-family: inherit; border: none; background: none; color: inherit; }
h1, h2, h3, h4 { font-weight: 600; line-height: 1.1; color: var(--c-text); }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; height: auto; }
::selection { background: var(--c-accent); color: var(--c-bg); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .fade-in { opacity: 1 !important; transform: none !important; }
}

@media (prefers-contrast: more) {
  :root      { --c-text-3: #4a3f33; --c-border-2: #8a7a66; }
  [data-theme="dark"] { --c-text-3: #9a9d8f; --c-border-2: #4a4d40; }
}

/* ---------- Screen-reader-only utility ---------- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap; border: 0;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; top: -200%; left: var(--sp-2); z-index: 300;
  padding: 0.6rem 1rem; background: var(--c-accent); color: var(--c-bg);
  font-family: var(--f-mono); font-size: var(--t-sm); font-weight: 500;
  border-radius: var(--r-md); text-decoration: none;
}
.skip-link:focus-visible { top: var(--sp-2); color: var(--c-bg); }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad); }
.section { padding: var(--sp-7) 0; }
.section--alt { background-color: var(--c-surface); border-block: 1px solid var(--c-border); }
section[id] { scroll-margin-top: calc(var(--nav-h) + 16px); }

.section__head { display: flex; align-items: baseline; gap: var(--sp-2); margin-bottom: var(--sp-5); }
.section__index { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--c-accent-ink); font-weight: 500; letter-spacing: 0.08em; }
.section__heading { font-family: var(--f-display); font-size: var(--t-h2); font-weight: 700; letter-spacing: -0.02em; line-height: 1.05; }

/* ---------- Navigation ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background-color: color-mix(in srgb, var(--c-bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--c-border);
}

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

.nav__logo {
  font-family: var(--f-display); font-weight: 700; font-size: 1.25rem;
  letter-spacing: -0.01em; text-decoration: none; color: var(--c-text);
  display: inline-flex; align-items: center; min-height: 44px;
  transition: color var(--tr-fast);
}
.nav__logo:hover { color: var(--c-accent); text-decoration: none; }

.nav__links { display: flex; align-items: center; gap: var(--sp-4); }
.nav__link {
  font-family: var(--f-mono); font-size: var(--t-xs); color: var(--c-text-2);
  text-decoration: none; padding: 0.5rem 0; letter-spacing: 0.08em; text-transform: uppercase;
  position: relative; transition: color var(--tr-fast);
}
.nav__link::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 0; height: 1px; background: var(--c-accent); transition: width var(--tr-fast);
}
.nav__link:hover { color: var(--c-text); text-decoration: none; }
.nav__link:hover::after, .nav__link.is-active::after { width: 100%; }
.nav__link.is-active { color: var(--c-text); }

.nav__actions { display: flex; align-items: center; gap: var(--sp-1); }

.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: var(--r-md); color: var(--c-text-2);
  border: 1px solid transparent;
  transition: color var(--tr-fast), background-color var(--tr-fast), border-color var(--tr-fast);
}
.theme-toggle:hover { color: var(--c-text); background-color: var(--c-surface); border-color: var(--c-border); }
[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"]  .icon-sun  { display: none; }

.nav__hamburger {
  display: none; flex-direction: column; gap: 5px; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: var(--r-md); color: var(--c-text);
  border: 1px solid transparent; transition: background-color var(--tr-fast), border-color var(--tr-fast);
}
.nav__hamburger:hover { background-color: var(--c-surface); border-color: var(--c-border); }
.nav__hamburger span {
  display: block; width: 18px; height: 1.5px;
  background-color: currentColor; border-radius: 2px;
  transition: transform var(--tr-fast), opacity var(--tr-fast);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-mobile {
  display: none; padding: var(--sp-2) var(--pad) var(--sp-3);
  border-top: 1px solid var(--c-border); background-color: var(--c-bg);
}
.nav-mobile.is-open { display: block; }
.nav-mobile__links { display: flex; flex-direction: column; }
.nav-mobile__link {
  display: block; padding: 0.875rem 0;
  font-family: var(--f-mono); font-size: 1rem; letter-spacing: 0.04em;
  color: var(--c-text); text-decoration: none; border-bottom: 1px solid var(--c-border);
}
.nav-mobile__link:hover { color: var(--c-accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5ch; justify-content: center;
  min-height: 44px; padding: 0.7rem 1.3rem; border-radius: var(--r-md);
  font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 500;
  text-decoration: none; white-space: nowrap; letter-spacing: 0.06em;
  transition: background-color var(--tr-fast), color var(--tr-fast), border-color var(--tr-fast), transform var(--tr-fast);
}
.btn--primary { background-color: var(--c-accent); color: var(--c-bg); border: 1px solid var(--c-accent); }
.btn--primary:hover { background-color: var(--c-accent-h); border-color: var(--c-accent-h); color: var(--c-bg); transform: translateY(-1px); }
.btn--ghost { background-color: transparent; color: var(--c-text); border: 1px solid var(--c-border-2); }
.btn--ghost:hover { border-color: var(--c-accent); color: var(--c-accent); text-decoration: none; }
.btn--sm { min-height: 36px; padding: 0.4rem 0.85rem; font-size: var(--t-xs); }

/* ---------- Chips / tags / badges ---------- */
.chip, .tag {
  display: inline-flex; align-items: center;
  font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 400;
  color: var(--c-text-2); background-color: var(--c-surface);
  border: 1px solid var(--c-border-2); padding: 0.35rem 0.7rem;
  border-radius: var(--r-sm); line-height: 1.3;
}
[data-theme="dark"] .tag { background-color: var(--c-surface-2); }

.badge {
  display: inline-flex; align-items: center; gap: 0.5ch;
  font-family: var(--f-mono); font-size: 0.6875rem; font-weight: 500;
  padding: 0.25rem 0.7rem; border-radius: var(--r-pill);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.badge--live { color: var(--c-bg); background-color: var(--c-accent); }
.badge--secondary { color: var(--c-text-2); background-color: var(--c-surface-2); border: 1px solid var(--c-border-2); }

.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-accent); flex-shrink: 0;
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--c-accent) 55%, transparent); }
  70%  { box-shadow: 0 0 0 6px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
@media (prefers-reduced-motion: reduce) { .dot { animation: none; } }

.fade-in { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
.fade-in.is-visible { opacity: 1; transform: none; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(3.5rem, 9vw, 7rem) 0 var(--sp-7);
  border-bottom: 1px solid var(--c-border);
}
.hero__grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(120% 90% at 70% 0%, #000 0%, transparent 70%);
          mask-image: radial-gradient(120% 90% at 70% 0%, #000 0%, transparent 70%);
}
[data-theme="dark"] .hero::before {
  content: ''; position: absolute; top: -160px; left: -80px;
  width: 720px; height: 720px;
  background: radial-gradient(ellipse, rgba(139,92,246,0.10) 0%, transparent 65%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 0.85ch;
  font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--c-accent-ink); margin-bottom: var(--sp-3);
}
.hero__eyebrow .dim { color: var(--c-text-3); }

/* Editorial name split */
.hero__name { font-family: var(--f-display); letter-spacing: -0.025em; line-height: 0.88; margin-bottom: 0; }
.hero__name-first { display: block; font-size: var(--t-hero-first); font-weight: 300; font-style: italic; color: var(--c-accent); line-height: 1; }
.hero__name-last  { display: block; font-size: var(--t-hero-last); font-weight: 700; color: var(--c-text); line-height: 0.87; margin-top: -0.04em; }
.hero__rule { width: 4rem; height: 1px; background: var(--c-accent); margin: 2rem 0 1.75rem; }

.hero__tagline {
  font-size: var(--t-tagline); font-weight: 400; line-height: 1.5;
  color: var(--c-text-2); max-width: 44ch; margin-bottom: var(--sp-5);
}
.hero__tagline strong { color: var(--c-text); font-weight: 600; }
.hero__tagline em { color: var(--c-accent-ink); font-style: normal; }

.hero__panel { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--sp-5); align-items: end; }
.hero__stats { display: flex; flex-wrap: wrap; gap: 0; margin-bottom: var(--sp-3); }
.stat { padding-right: var(--sp-4); margin-right: var(--sp-4); border-right: 1px solid var(--c-border); }
.stat:last-child { border-right: none; margin-right: 0; padding-right: 0; }
.stat__num { display: block; font-family: var(--f-display); font-size: 2rem; font-weight: 700; color: var(--c-text); line-height: 1; margin-bottom: 0.4rem; }
.stat__num--accent { color: var(--c-accent); }
.stat__label { display: block; font-family: var(--f-mono); font-size: var(--t-xs); letter-spacing: 0.06em; text-transform: uppercase; color: var(--c-text-3); }
.hero__chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.hero__aside { display: flex; flex-direction: column; align-items: flex-start; gap: var(--sp-3); }
@media (min-width: 861px) { .hero__aside { align-items: flex-end; } }

.status {
  display: inline-flex; align-items: center; gap: 0.7ch;
  font-family: var(--f-mono); font-size: var(--t-xs);
  letter-spacing: 0.05em; text-transform: uppercase; color: var(--c-text-2);
}
.status strong { color: var(--c-text); font-weight: 500; }

.hero__email {
  display: inline-flex; align-items: center; gap: 0.7ch;
  min-height: 50px; padding: 0.85rem 1.4rem;
  font-family: var(--f-mono); font-size: 0.9375rem;
  color: var(--c-text); text-decoration: none;
  background: var(--c-surface); border: 1px solid var(--c-border-2); border-radius: var(--r-md);
  transition: border-color var(--tr-fast), color var(--tr-fast), background-color var(--tr-fast);
}
.hero__email::before { content: "→" / ""; color: var(--c-accent); }
.hero__email:hover { border-color: var(--c-accent); color: var(--c-accent); background: var(--c-accent-soft); text-decoration: none; }

.hero__social { display: flex; gap: var(--sp-2); align-items: center; }
.hero__social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; color: var(--c-text-2);
  border: 1px solid var(--c-border); border-radius: var(--r-md);
  text-decoration: none; transition: color var(--tr-fast), border-color var(--tr-fast);
}
.hero__social a:hover { color: var(--c-accent); border-color: var(--c-accent); }
.hf-link { font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 600; }

/* ============================================================
   ABOUT
   ============================================================ */
.about__grid { display: grid; grid-template-columns: 1fr 280px; gap: var(--sp-6); align-items: start; }
.about__text p { color: var(--c-text-2); margin-bottom: var(--sp-3); line-height: 1.8; }
.about__text p:last-child { margin-bottom: 0; }
.about__lead {
  font-family: var(--f-display) !important;
  font-size: 1.5rem !important;
  color: var(--c-text) !important;
  font-weight: 600;
  line-height: 1.4 !important;
  font-style: italic;
}
.about__lead em { color: var(--c-accent); font-style: normal; }
.about__targeting {
  font-family: var(--f-mono) !important;
  font-size: var(--t-xs) !important;
  border-top: 1px solid var(--c-border);
  padding-top: var(--sp-3);
  line-height: 1.7 !important;
  letter-spacing: 0.02em;
}
.about__targeting strong { color: var(--c-text); font-weight: 500; }

.about__meta { display: flex; flex-direction: column; gap: var(--sp-2); position: sticky; top: calc(var(--nav-h) + 24px); }
.fact-card { background-color: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-md); padding: var(--sp-3); }
.fact-card__num { display: block; font-family: var(--f-display); font-size: 2rem; font-weight: 700; color: var(--c-text); line-height: 1; margin-bottom: 0.5rem; }
.fact-card__num--accent { color: var(--c-accent); }
.fact-card__label { display: block; font-size: var(--t-sm); color: var(--c-text-2); line-height: 1.45; }

/* ============================================================
   PROJECTS
   ============================================================ */
.project-card {
  background-color: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--r-lg); padding: var(--sp-4); margin-bottom: var(--sp-4);
  transition: border-color var(--tr-base);
}
.project-card:last-child { margin-bottom: 0; }
.project-card:hover { border-color: rgba(139,92,246,0.30); }
.project-card--featured { border-color: var(--c-border-2); }
.project-card--featured:hover { border-color: rgba(139,92,246,0.45); }
.section--alt .project-card { background-color: var(--c-bg); }

.project-card__header { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--sp-3); margin-bottom: var(--sp-3); flex-wrap: wrap; }
.project-card__title-group { display: flex; flex-direction: column; gap: 0.5rem; }
.project-card__title { font-family: var(--f-display); font-size: 1.6rem; font-weight: 700; letter-spacing: -0.015em; }
.project-card__sub { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--c-text-3); letter-spacing: 0.04em; }
.project-card__links { display: flex; gap: var(--sp-1); flex-shrink: 0; }
.project-card__desc { color: var(--c-text-2); line-height: 1.75; margin-bottom: var(--sp-3); font-size: var(--t-sm); max-width: 72ch; }

.project-card__highlights { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-2); margin-bottom: var(--sp-3); }
.highlight { background-color: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-md); padding: var(--sp-3); }
[data-theme="dark"] .highlight { background-color: var(--c-surface-2); }
.highlight__title { display: flex; align-items: center; gap: 0.6ch; font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 500; color: var(--c-text); margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: 0.04em; }
.highlight__title::before { content: "›" / ""; color: var(--c-accent-ink); font-weight: 600; font-size: 1rem; }
.highlight__text { font-size: 0.85rem; color: var(--c-text-2); line-height: 1.65; }
.highlight--wide { grid-column: 1 / -1; }
.highlight--wide .highlight__title::before { content: "✓" / ""; }
.project-card__stack { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* ============================================================
   STACK
   ============================================================ */
.stack-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); }
.stack-group { background-color: var(--c-bg); border: 1px solid var(--c-border); border-radius: var(--r-md); padding: var(--sp-3) var(--sp-4); }
.stack-group__label { display: flex; align-items: center; gap: 0.6ch; font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 500; color: var(--c-text-3); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--sp-2); }
.stack-group__label::before { content: "//" / ""; color: var(--c-accent-ink); letter-spacing: -0.05em; }
.stack-group__tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* ============================================================
   EXPERIENCE
   ============================================================ */
.timeline { display: flex; flex-direction: column; }
.timeline__item { display: grid; grid-template-columns: 210px 1fr; gap: var(--sp-4); padding: var(--sp-4) 0; border-bottom: 1px solid var(--c-border); }
.timeline__item:first-child { padding-top: 0; }
.timeline__item:last-child { border-bottom: none; padding-bottom: 0; }
.timeline__meta { display: flex; flex-direction: column; gap: 0.4rem; padding-top: 0.15rem; }
.timeline__date { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--c-accent-ink); letter-spacing: 0.04em; }
.timeline__company { font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 500; color: var(--c-text-3); line-height: 1.4; letter-spacing: 0.02em; text-transform: uppercase; }
.timeline__role { font-family: var(--f-display); font-size: 1.3rem; font-weight: 700; color: var(--c-text); margin-bottom: var(--sp-1); letter-spacing: -0.01em; }
.timeline__content p { font-size: var(--t-sm); color: var(--c-text-2); line-height: 1.75; margin-bottom: var(--sp-2); }
.timeline__tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* ============================================================
   EDUCATION
   ============================================================ */
.edu-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); }
.edu-card { background-color: var(--c-bg); border: 1px solid var(--c-border); border-radius: var(--r-lg); padding: var(--sp-4); }
.edu-card--featured { border-color: var(--c-border-2); }
.edu-card__date { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--c-accent-ink); letter-spacing: 0.04em; margin-bottom: 0.5rem; display: block; }
.edu-card__school { font-family: var(--f-display); font-size: 1.2rem; font-weight: 700; margin-bottom: 0.35rem; letter-spacing: -0.01em; }
.edu-card__degree { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--c-text-2); margin-bottom: var(--sp-2); line-height: 1.45; letter-spacing: 0.02em; }
.edu-card__desc { font-size: var(--t-sm); color: var(--c-text-2); line-height: 1.7; margin-bottom: var(--sp-2); }
.edu-card__tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact__grid { display: grid; grid-template-columns: 1fr 320px; gap: var(--sp-6); align-items: start; }
.contact__lead { font-family: var(--f-display); font-size: 2rem; font-weight: 600; font-style: italic; color: var(--c-text); line-height: 1.3; margin-bottom: var(--sp-3); letter-spacing: -0.01em; }
.contact__lead em { color: var(--c-accent); font-style: normal; }
.contact__intro > p { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--c-text-2); line-height: 1.7; letter-spacing: 0.02em; }
.contact__intro > p strong { color: var(--c-text); font-weight: 500; }

.contact__reach { display: flex; flex-direction: column; gap: var(--sp-3); padding: var(--sp-4); background-color: var(--c-bg); border: 1px solid var(--c-border-2); border-radius: var(--r-lg); }
.section--alt .contact__reach { background-color: var(--c-bg); }
.contact__reach-label { font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 500; color: var(--c-text-3); text-transform: uppercase; letter-spacing: 0.1em; }
.contact__email { display: inline-flex; align-items: center; gap: 0.6ch; font-family: var(--f-mono); font-size: 1rem; color: var(--c-text); text-decoration: none; min-height: 44px; }
.contact__email::before { content: "→" / ""; color: var(--c-accent); }
.contact__email:hover { color: var(--c-accent); }
.copy-btn { align-self: flex-start; display: inline-flex; align-items: center; gap: 0.5ch; min-height: 36px; padding: 0.4rem 0.8rem; font-family: var(--f-mono); font-size: var(--t-xs); color: var(--c-text-2); border: 1px solid var(--c-border-2); border-radius: var(--r-sm); background: transparent; transition: color var(--tr-fast), border-color var(--tr-fast); }
.copy-btn:hover { color: var(--c-accent); border-color: var(--c-accent); }
.copy-btn.is-copied { color: var(--c-accent); border-color: var(--c-accent); }
.contact__social { display: flex; flex-wrap: wrap; gap: var(--sp-3); padding-top: var(--sp-2); border-top: 1px solid var(--c-border); }
.contact__social-link { font-family: var(--f-mono); font-size: var(--t-sm); color: var(--c-text-2); text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; transition: color var(--tr-fast); }
.contact__social-link:hover { color: var(--c-accent); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { padding: var(--sp-5) 0; border-top: 1px solid var(--c-border); }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--sp-2); }
.footer__line { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--c-text-2); line-height: 1.6; }
.footer__line a { color: var(--c-text-2); }
.footer__line a:hover { color: var(--c-accent); }
.footer__roles { color: var(--c-text-3); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  :root { --pad: 1.25rem; }
  .section { padding: var(--sp-6) 0; }
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .hero__panel { grid-template-columns: 1fr; gap: var(--sp-4); align-items: start; }
  .hero__aside { align-items: flex-start; }

  .about__grid { grid-template-columns: 1fr; gap: var(--sp-4); }
  .about__meta { position: static; flex-direction: row; flex-wrap: wrap; }
  .fact-card { flex: 1; min-width: 150px; }

  .project-card__highlights { grid-template-columns: 1fr; }
  .project-card__header { flex-direction: column; align-items: flex-start; }

  .stack-grid { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  .timeline__item { grid-template-columns: 1fr; gap: var(--sp-1); }
  .contact__grid { grid-template-columns: 1fr; gap: var(--sp-4); }
}

@media (max-width: 480px) {
  .hero__stats { gap: var(--sp-2) 0; }
  .stat { padding-right: var(--sp-3); margin-right: var(--sp-3); }
  .project-card__links { width: 100%; }
}