/* ================================================================
   matt le — v3 portfolio
   white paper · serif display · parallax · sticky decks
   ================================================================ */

:root {
  --paper:   #f4f0e8;
  --paper-2: #ece7dc;
  --ink:     #1a1a1a;
  --ink-dim: #5a544c;
  --line:    rgba(26,26,26,0.12);
  --accent:  #ff5b22;
  --accent-2:#2a4cff;

  --serif: 'Instrument Serif', Georgia, serif;
  --sans:  'Inter', -apple-system, system-ui, sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, monospace;

  --pad: clamp(1.25rem, 4vw, 3rem);
}

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

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}
/* contain horizontal overflow per-section so sticky on body's children works */
.home, .experience { overflow-x: clip; }

body {
  background-image:
    radial-gradient(rgba(26,26,26,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: 0 0;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, li { list-style: none; }

.mono { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.04em; text-transform: uppercase; }
.dim  { color: var(--ink-dim); }
.eyebrow { display: inline-block; padding: 0.35rem 0.65rem; border: 1px solid var(--line); border-radius: 999px; }

/* ---------- cursor blob ---------- */
.cursor {
  position: fixed;
  top: 0; left: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--ink);
  mix-blend-mode: difference;
  transform: translate3d(-100px,-100px,0);
  pointer-events: none;
  z-index: 9999;
  transition: width .25s ease, height .25s ease, background .2s ease;
}
.cursor.hover { width: 56px; height: 56px; }
@media (hover: none) { .cursor { display: none; } }

/* ---------- top nav ---------- */
.topnav {
  position: fixed;
  inset: 0 0 auto 0;
  height: 64px;
  padding: 0 var(--pad);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  z-index: 100;
  backdrop-filter: blur(8px) saturate(140%);
  -webkit-backdrop-filter: blur(8px) saturate(140%);
  background: rgba(244,240,232,0.65);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-style: italic;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}
.brand-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.topnav-links {
  display: flex;
  gap: 1.5rem;
  font-size: .9rem;
}
.topnav-links a {
  display: inline-flex;
  align-items: baseline;
  gap: .35rem;
  opacity: .85;
  transition: opacity .2s ease;
}
.topnav-links a:hover { opacity: 1; }
.topnav-links .num {
  font-family: var(--mono);
  font-size: .55rem;
  opacity: .5;
  letter-spacing: .05em;
}
.topnav-meta { justify-self: end; }
.status {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #2ecc71;
  box-shadow: 0 0 0 4px rgba(46,204,113,.18);
  animation: pulse 2s infinite ease-in-out;
}
@keyframes pulse { 50% { box-shadow: 0 0 0 8px rgba(46,204,113,0); } }

/* ================================================================
   HOME
   ================================================================ */
.home {
  position: relative;
  min-height: 100vh;
  padding: 64px var(--pad) 0;
  display: flex;
  flex-direction: column;
}

.home-grid {
  flex: 1;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "tl   .   tr"
    "head head head"
    "bl   .   br";
  gap: 1rem;
  padding: 2rem 0;
}

.home-tag.tl { grid-area: tl; }
.home-tag.tr { grid-area: tr; text-align: right; }
.home-tag.bl { grid-area: bl; display: inline-flex; align-items: center; gap: .6rem; }
.home-tag.br { grid-area: br; }

.scroll-arrow {
  width: 14px; height: 14px;
  border-right: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  transform: rotate(45deg);
  animation: bob 1.6s infinite ease-in-out;
}
@keyframes bob {
  0%,100% { transform: rotate(45deg) translate(0,0); }
  50%     { transform: rotate(45deg) translate(3px,3px); }
}

.home-headline {
  grid-area: head;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.display {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(5rem, 18vw, 18rem);
  line-height: 0.85;
  letter-spacing: -0.02em;
  margin: 0;
}
.display .line { display: inline-block; will-change: transform; }
.display .italic { font-style: italic; color: var(--accent); }

.home-sub {
  margin-top: 1.5rem;
  display: inline-flex;
  align-items: baseline;
  gap: .6rem;
  font-size: 1rem;
}
.typing {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--ink);
}
.typing::after {
  content: '▍';
  margin-left: 2px;
  color: var(--accent);
  animation: blink .9s infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.home-ctas { display: flex; gap: .6rem; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-size: .85rem;
  font-weight: 500;
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.btn:hover { transform: translateY(-2px); background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.ghost {
  background: transparent;
  color: var(--ink);
}
.btn.ghost:hover { background: var(--ink); color: var(--paper); }
.btn-arrow { transition: transform .2s ease; }
.btn:hover .btn-arrow { transform: translate(2px,-2px); }

.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 1rem 0;
  margin: 0 calc(-1 * var(--pad));
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 40s linear infinite;
  font-family: var(--serif);
  font-style: italic;
  font-size: 2rem;
  white-space: nowrap;
}
.m-group {
  display: inline-flex;
  align-items: center;
  gap: 2rem;
  padding-right: 2rem;
  flex-shrink: 0;
}
.marquee-track .bullet {
  font-family: var(--sans);
  font-style: normal;
  font-size: .6rem;
  color: var(--accent);
  align-self: center;
}
@keyframes marquee {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-50%, 0, 0); }
}

/* ================================================================
   ABOUT — sticky card stack
   ================================================================ */
.about {
  position: relative;
  padding: 8rem var(--pad) 0;
}
.about-intro {
  max-width: 720px;
  margin: 0 auto 4rem;
  text-align: center;
}
.section-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 1rem 0 1.5rem;
}
.section-title em { font-style: italic; color: var(--accent); }
.section-lede {
  font-size: 1.05rem;
  color: var(--ink-dim);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.55;
}

.card-deck {
  position: relative;
  /* one viewport of dwell + one viewport of flip per card, plus a final dwell */
  height: 1300vh;
  max-width: 100%;
  margin: 0 auto;
}
.deck-stage {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.deck-card {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(900px, 90vw);
  max-height: 78vh;
  transform: translate3d(-50%, -50%, 0);
  will-change: transform, opacity;
  -webkit-tap-highlight-color: transparent;
}
.deck-card-inner {
  background: #fffaf0;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.25rem;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.5rem;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.6) inset,
    0 30px 60px -25px rgba(26,26,26,0.30),
    0 10px 20px -10px rgba(26,26,26,0.15);
}
.stack-photo {
  border-radius: 14px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--paper-2);
}
.stack-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.stack-meta {
  padding: 1rem .75rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
}
.stack-meta h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.05;
}
.stack-meta p {
  color: var(--ink-dim);
  font-size: 1rem;
  line-height: 1.55;
}
.stack-meta em { font-style: italic; color: var(--ink); }

.deck-hud {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 1.25rem;
  pointer-events: none;
  opacity: .8;
}
.deck-counter {
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.deck-now {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  margin-right: .25rem;
  color: var(--accent);
}

/* ================================================================
   EXPERIENCE — pinned horizontal scroll
   ================================================================ */
.experience {
  position: relative;
  padding: 8rem var(--pad) 0;
}
.exp-intro {
  max-width: 720px;
  margin: 0 auto 3rem;
  text-align: center;
}

.exp-rail {
  position: relative;
  width: 100vw;
  margin-left: calc(-1 * var(--pad));
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  cursor: grab;
  padding-bottom: 3rem;
}
.exp-rail::-webkit-scrollbar { display: none; }
.exp-rail.dragging { cursor: grabbing; scroll-snap-type: none; }
.exp-track {
  display: flex;
  gap: 2rem;
  padding: 1rem 10vw 1rem var(--pad);
  width: max-content;
}
.exp-item { scroll-snap-align: start; }
.exp-item {
  flex: 0 0 auto;
  width: min(440px, 80vw);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.exp-year {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(4rem, 9vw, 8rem);
  line-height: 1;
  color: var(--ink);
  opacity: .92;
}
.exp-year span {
  display: inline-block;
  border-bottom: 1px solid var(--line);
  padding-bottom: .25rem;
}
.exp-card {
  background: #fffaf0;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.5rem;
  box-shadow: 0 20px 40px -28px rgba(26,26,26,0.25);
}
.exp-card.current {
  background: var(--ink);
  color: var(--paper);
}
.exp-card.current .mono { color: rgba(244,240,232,0.7); }
.exp-card-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  opacity: .7;
}
.exp-card h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.9rem;
  line-height: 1.1;
}
.exp-role {
  font-style: italic;
  margin-top: .15rem;
  color: var(--accent);
}
.exp-card.current .exp-role { color: #ffb89a; }
.exp-blurb {
  margin-top: 1rem;
  line-height: 1.5;
  color: var(--ink-dim);
}
.exp-card.current .exp-blurb { color: rgba(244,240,232,0.75); }

.exp-hud {
  text-align: center;
  margin-top: 1rem;
  opacity: .55;
}

/* ================================================================
   THOUGHTS
   ================================================================ */
.thoughts {
  padding: 8rem var(--pad);
  max-width: 900px;
  margin: 0 auto;
}
.thoughts-intro {
  text-align: center;
  margin-bottom: 3rem;
}
.thoughts-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.thought {
  background: #fffaf0;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.1rem 1.4rem;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease;
}
.thought:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -20px rgba(26,26,26,.25);
}
.thought-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}
.thought-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.4rem;
}
.thought-date {
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.thought-body {
  display: none;
  margin-top: .9rem;
  color: var(--ink-dim);
  line-height: 1.65;
}
.thought-body.open { display: block; }

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  border-top: 1px solid var(--line);
  padding: 5rem var(--pad) 3rem;
  background: var(--paper);
}
.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: end;
}
.footer-big .display {
  font-size: clamp(4rem, 14vw, 12rem);
}
.footer-big .italic { color: var(--accent); }
.footer-links {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  font-family: var(--serif);
  font-size: 1.4rem;
  text-align: right;
}
.footer-links a {
  position: relative;
  transition: color .2s ease, transform .2s ease;
}
.footer-links a:hover {
  color: var(--accent);
  transform: translateX(-4px);
}
.footer-meta {
  grid-column: 1 / -1;
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
}

/* ================================================================
   responsive
   ================================================================ */
@media (max-width: 820px) {
  .topnav {
    grid-template-columns: 1fr auto;
    height: 56px;
  }
  .topnav-links { display: none; }
  .topnav-meta { display: none; }
  .topnav { grid-template-columns: 1fr; justify-items: start; }

  .home-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "tl"
      "head"
      "br"
      "bl";
    gap: 2rem;
  }
  .home-tag.tr { display: none; }
  .home-tag.bl { display: flex; }
  .home-tag.br { justify-self: center; }
  .home-headline { padding-top: 1rem; }

  .deck-card-inner {
    grid-template-columns: 1fr;
    padding: 1rem;
    gap: 1rem;
  }
  .stack-photo { aspect-ratio: 4/3; }
  .stack-meta { padding: .25rem .5rem 1rem; }
  .stack-meta h3 { font-size: 1.4rem; }
  .stack-meta p  { font-size: .95rem; }
  .deck-card { max-height: 86vh; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer-links { text-align: left; }
  .footer-meta { flex-direction: column; gap: .5rem; }

  .exp-item { width: 78vw; }
}