:root {
  --bg: #ffffff;
  --panel: #f5f5f7;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --line: #e8e8ed;
  --link: #0066cc;
  --max: 1080px;
  --gutter: max(16px, 5vw);
  --card: min(82vw, 380px);
  --grow: 300px;
  --ease: cubic-bezier(.25, .8, .25, 1);
  color-scheme: light;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 64px; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Geist", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  letter-spacing: -.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ol { list-style: none; }
b { font-weight: inherit; }
[data-count] { font-variant-numeric: tabular-nums; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; border-radius: 4px; }

.ic {
  width: 20px; height: 20px; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.6;
  stroke-linecap: round; stroke-linejoin: round;
}

/* custom cursor: white + difference = black on white, inverts what it covers */
.has-cursor, .has-cursor * { cursor: none !important; }
.cursor {
  position: fixed; left: 0; top: 0; z-index: 100;
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; mix-blend-mode: difference;
  pointer-events: none; opacity: 0;
  transition: width .3s var(--ease), height .3s var(--ease), opacity .3s;
}
.has-cursor .cursor.on { opacity: 1; }
.cursor.big { width: 72px; height: 72px; }
.cursor.down { width: 12px; height: 12px; }

/* nav */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 10;
  background: rgba(255, 255, 255, .8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter);
  height: 52px; display: flex; align-items: center; justify-content: space-between;
}
.mark { font-weight: 600; font-size: 15px; }
.links { display: flex; }
.links a {
  font-size: 14px; color: var(--muted);
  padding: 14px 12px; min-height: 44px;
  transition: color .2s;
}
.links a:last-child { padding-right: 0; }
.links a:hover { color: var(--ink); }

/* type */
h1, h2, h3 { font-weight: 600; }
h2 {
  font-size: clamp(40px, 6vw, 64px); line-height: 1.05; letter-spacing: -.035em;
  margin-bottom: clamp(32px, 5vw, 56px);
}
h3 { font-size: clamp(21px, 2.4vw, 28px); line-height: 1.2; letter-spacing: -.02em; }
p { color: var(--muted); }

/* layout */
section { padding: clamp(96px, 14vw, 160px) 0; }
.wrap, .wrap-x { width: 100%; max-width: var(--max); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: none; }

/* hero: typewriter over an invisible copy so the line never shifts */
.hero {
  min-height: 100svh; display: grid; place-items: center;
  padding: 52px var(--gutter) 0; text-align: center;
}
.hero-in { will-change: transform, opacity; }
.hero h1 {
  display: inline-grid;
  font-size: clamp(56px, 12vw, 168px); line-height: 1; letter-spacing: -.055em;
}
.hero h1 > span { grid-area: 1 / 1; text-align: left; white-space: nowrap; }
.hero h1 .ghost { visibility: hidden; }
.caret {
  display: inline-block; width: .06em; height: .78em; margin: 0 -.1em 0 .04em;
  background: var(--ink); vertical-align: -.04em;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.hero p {
  font-size: clamp(19px, 2.4vw, 28px); letter-spacing: -.02em; margin-top: 20px;
  opacity: 0; transform: translateY(8px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.typed .hero p { opacity: 1; transform: none; }

/* one-liner that opens each section */
.aside {
  max-width: 44ch; margin-bottom: clamp(24px, 3vw, 36px);
  font-size: clamp(19px, 2.2vw, 24px); line-height: 1.35; letter-spacing: -.015em;
}

/* lists (work, code) */
.list li { border-top: 1px solid var(--line); }
.list li:last-child { border-bottom: 1px solid var(--line); }
.list li, .list li > a {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.list li { padding: 24px 0; }
.list li:has(> a) { padding: 0; }
.list li > a { width: 100%; padding: 24px 0; }
.list p { margin-top: 4px; }
.list time { color: var(--muted); white-space: nowrap; }
.go { color: var(--link); width: 22px; height: 22px; transition: transform .4s var(--ease); }
.list a h3 { transition: color .2s; }
.list a:hover h3 { color: var(--link); }
.list a:hover .go { transform: translate(3px, -3px); }

/* projects: pinned; the row of cards slides left and piles up at the left edge */
.projects { padding: 0; position: relative; }
.pin {
  position: sticky; top: 0; height: 100svh; overflow: hidden;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: 52px;
}
.pin h2 { margin-bottom: clamp(32px, 5vw, 56px); }
.stack {
  position: relative; height: min(var(--card), 62svh);
  margin-left: max(var(--gutter), calc((100vw - var(--max)) / 2 + var(--gutter)));
}
.card {
  position: absolute; left: 0; top: 0;
  overflow: hidden; outline-offset: 4px;
  width: var(--card); height: 100%;
  background: var(--panel); border-radius: 28px;
  border: 1px solid rgba(0, 0, 0, .05);
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, .18);
  transform-origin: left center; will-change: transform;
  transition: width .6s var(--ease);
}
.card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: #fff; opacity: var(--dim, 0);
}
.card .main {
  width: var(--card); height: 100%;
  padding: clamp(24px, 3vw, 36px);
  display: flex; flex-direction: column; justify-content: space-between;
}
.card .kind { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; }
.card h3 { font-size: clamp(28px, 3vw, 36px); letter-spacing: -.03em; }
.card .main p:not(.kind) { margin-top: 10px; }

.steps {
  position: absolute; top: clamp(24px, 3vw, 36px); bottom: clamp(24px, 3vw, 36px);
  left: var(--card); width: calc(var(--grow) - 36px);
  display: flex; flex-direction: column; justify-content: center; gap: 22px;
  border-left: 1px solid var(--line); padding-left: 28px;
  opacity: 0; transform: translateX(-12px);
  transition: opacity .4s var(--ease), transform .6s var(--ease);
}
.steps li { position: relative; font-size: 15px; line-height: 1.4; }
.steps li::before {
  content: ""; position: absolute; left: -33px; top: .45em;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 1.5px solid var(--ink);
}
.steps li:last-child::before { background: var(--ink); }

.card.top:hover, .card.top:focus-visible, .card.open { width: calc(var(--card) + var(--grow)); z-index: 5; }
.card.top:hover .steps, .card.top:focus-visible .steps, .card.open .steps {
  opacity: 1; transform: none; transition-delay: .15s;
}

/* education */
.grades { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.grade { background: var(--panel); border-radius: 28px; padding: clamp(24px, 3vw, 40px); }
.grade .ic { width: 28px; height: 28px; margin-bottom: 28px; }
.grade b {
  display: block; font-weight: 600; letter-spacing: -.05em; line-height: 1;
  font-size: clamp(56px, 5.6vw, 68px); margin-bottom: 20px;
}

/* toolkit */
.kit { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px 24px; }
.kit dt { font-size: 14px; font-weight: 500; color: var(--muted); margin-bottom: 12px; }
.kit dd { padding: 4px 0; }

/* contact */
.contact { text-align: center; padding-bottom: clamp(120px, 16vw, 200px); }
.contact .aside { margin-left: auto; margin-right: auto; }
.mail {
  display: inline-flex; align-items: center; gap: .4em; color: var(--link);
  font-size: clamp(22px, 4vw, 40px); font-weight: 500; letter-spacing: -.03em;
  word-break: break-word;
}
.mail .ic { width: .9em; height: .9em; stroke-width: 1.8; }
.mail:hover { text-decoration: underline; text-underline-offset: .15em; text-decoration-thickness: 2px; }

/* footer */
.foot {
  width: calc(100% - 2 * var(--gutter)); max-width: calc(var(--max) - 2 * var(--gutter));
  margin: 0 auto; padding: 24px 0 40px;
  border-top: 1px solid var(--line);
  display: flex; gap: 28px; font-size: 14px; color: var(--muted);
}
.foot a { padding: 12px 0; transition: color .2s; }
.foot a:hover { color: var(--ink); }
.foot a:last-child { margin-left: auto; }

/* responsive */
@media (max-width: 860px) {
  .grades { grid-template-columns: 1fr; }
  .kit { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  :root { --grow: 0px; }
  .mark { font-size: 14px; }
  .links a { padding: 14px 8px; }
  /* small screens: steps fade over the card instead of widening it */
  .steps {
    inset: 0; width: auto; left: 0; border: 0;
    background: var(--panel); padding: 32px 32px 32px 56px; transform: none;
  }
  .steps::before {
    content: ""; position: absolute; left: 36px; top: 32px; bottom: 32px;
    width: 1px; background: var(--line);
  }
  .steps li::before { left: -24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .hero p { opacity: 1; transform: none; transition: none; }
  .card, .steps, .cursor { transition: none; }
  /* no stacking: plain wrapped row of cards */
  .projects { height: auto !important; }
  .pin { position: static; height: auto; padding: 96px 0; }
  .stack { height: auto; display: flex; flex-wrap: wrap; gap: 20px; margin-right: var(--gutter); }
  .card { position: relative; height: min(var(--card), 62svh); }
}