/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg:      #08080b;
  --bg-2:    #0e0e13;
  --ink:     #f5f4f0;
  --mute:    #8b8b94;
  --accent:  #c2ff45;
  --g1:      #5b3dff;
  --g2:      #00a6ff;
  --g3:      #c2ff45;
  --line:    rgba(245, 244, 240, 0.12);
  --line-soft: rgba(245, 244, 240, 0.07);

  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --mono:  "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --gutter: clamp(1.25rem, 5vw, 6rem);
}

@property --mx { syntax: "<percentage>"; inherits: true; initial-value: 50%; }
@property --my { syntax: "<percentage>"; inherits: true; initial-value: 40%; }

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

/* NOTE: no scroll-behavior:smooth here — it corrupts ScrollTrigger.refresh()
   while a section is pinned (positions shift by -scrollY). Anchor smoothness
   is handled in JS via window.scrollTo({behavior:"smooth"}). */
html {
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
  background: var(--bg);
}

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}

img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; line-height: 1.04; letter-spacing: -0.025em; }
ul { padding: 0; list-style: none; }

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #26262e; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #34343e; }

/* =============================================================
   3. Utilities
   ============================================================= */
.mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

[hidden] { display: none !important; }

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: 0.6rem 1rem; background: var(--accent); color: var(--bg);
  z-index: 9999; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

.section-label {
  color: var(--mute);
  margin-bottom: clamp(1.5rem, 4vh, 3rem);
}

.section-title {
  font-size: clamp(2.2rem, 5.5vw, 4.6rem);
  font-weight: 700;
  max-width: 16ch;
  margin-bottom: clamp(2.5rem, 7vh, 5rem);
}
.section-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0;
}

/* Film grain overlay */
.grain {
  position: fixed; inset: 0; z-index: 50;
  pointer-events: none; opacity: 0.05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size: 220px 220px;
}

/* Scroll reveal (universal) */
[data-reveal] {
  opacity: 0; transform: translateY(36px);
  transition: opacity 0.9s var(--ease-soft), transform 0.9s var(--ease-soft);
}
[data-reveal].is-revealed { opacity: 1; transform: none; }

/* Defensive: never let a split element stay hidden */
[data-reveal][data-split] { opacity: 1; transform: none; }

/* =============================================================
   4. Nav
   ============================================================= */
.nav {
  position: fixed; top: 0; inset-inline: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 1rem var(--gutter);
  transition: background-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out), padding 0.4s var(--ease-out);
}
.nav.is-scrolled {
  background: rgba(8, 8, 11, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line-soft);
  padding-block: 0.7rem;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.nav-logo::after { content: ""; display: inline-block; width: 7px; height: 7px; margin-left: 6px; border-radius: 50%; background: var(--accent); }

.nav-links { display: flex; gap: clamp(1rem, 3vw, 2.4rem); }

.nav-link {
  position: relative;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--mute);
  padding: 0.25rem 0;
  transition: color 0.3s var(--ease-out);
}
.nav-link:hover { color: var(--ink); }
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--accent);
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.45s var(--ease-soft);
}
.nav-link:hover::after { transform: scaleX(1); transform-origin: left; }

.lang-toggle {
  display: flex; align-items: center; gap: 4px;
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 99px;
  transition: border-color 0.3s var(--ease-out);
}
.lang-toggle:hover { border-color: var(--accent); }
.lang-opt { color: var(--mute); transition: color 0.3s; }
.lang-opt.is-active { color: var(--accent); }
.lang-sep { color: var(--line); }

/* =============================================================
   5. Hero
   ============================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 7rem var(--gutter) 5.5rem;
  isolation: isolate;
}

.hero-gradient {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(circle 620px at var(--mx, 50%) var(--my, 40%),
      rgba(91, 61, 255, 0.50) 0%, transparent 55%),
    radial-gradient(circle 880px at calc(var(--mx, 50%) + 14%) calc(var(--my, 40%) - 12%),
      rgba(0, 166, 255, 0.32) 0%, transparent 55%),
    radial-gradient(circle 720px at calc(var(--mx, 50%) - 18%) calc(var(--my, 40%) + 18%),
      rgba(194, 255, 69, 0.16) 0%, transparent 52%),
    var(--bg);
  filter: blur(46px) saturate(140%);
}
.hero-gradient::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(8,8,11,0.25) 0%, transparent 35%, transparent 60%, var(--bg) 100%);
}

.hero-inner { max-width: 1200px; }

.hero-kicker {
  color: var(--mute);
  margin-bottom: clamp(1.2rem, 3vh, 2rem);
}

.hero-title {
  font-size: clamp(2.7rem, 9vw, 8rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 0.99;
  max-width: 14ch;
  margin-bottom: clamp(1.4rem, 4vh, 2.4rem);
}
.hero-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--accent);
}
.hero-title .split-char { display: inline-block; will-change: transform; }
.split-w { display: inline-block; white-space: nowrap; }

.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  color: var(--mute);
  max-width: 52ch;
  margin-bottom: clamp(1.8rem, 5vh, 3rem);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; }

.hero-foot {
  position: absolute; bottom: 1.6rem; left: var(--gutter); right: var(--gutter);
  display: flex; justify-content: space-between; align-items: center;
  color: var(--mute);
}
.hero-scrollhint { animation: hintFloat 2.6s ease-in-out infinite; }
@keyframes hintFloat {
  0%, 100% { transform: translateY(0); opacity: 0.7; }
  50%      { transform: translateY(6px); opacity: 1; }
}

/* =============================================================
   6. Buttons
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.95rem 1.8rem;
  border-radius: 99px;
  font-weight: 600; font-size: 0.95rem;
  transition: transform 0.45s var(--ease-soft), box-shadow 0.45s var(--ease-soft), background-color 0.3s, color 0.3s, border-color 0.3s;
}
.btn:active { transform: translateY(-1px); transition-duration: 0.12s; }

.btn-primary {
  background: var(--accent); color: var(--bg);
  box-shadow: 0 4px 18px rgba(194, 255, 69, 0.12);
}
.btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 44px rgba(194, 255, 69, 0.28);
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
}
.btn-ghost:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

/* =============================================================
   7. Manifesto
   ============================================================= */
.manifesto {
  padding: clamp(7rem, 18vh, 13rem) var(--gutter);
  max-width: 1100px;
}

.manifesto-text {
  font-size: clamp(1.55rem, 3.6vw, 3.1rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.02em;
}
.manifesto-text em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}
.mani-word { opacity: 0.13; }

/* =============================================================
   8. Stats
   ============================================================= */
.stats { padding: 0 var(--gutter) clamp(4rem, 10vh, 7rem); }

.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line-soft);
}

.stat {
  padding: 2rem 0.5rem;
  border-bottom: 1px solid var(--line-soft);
  display: flex; flex-direction: column; gap: 0.4rem;
}

.stat-num {
  font-size: clamp(3rem, 6.5vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--ink);
}

.stat-label { color: var(--mute); max-width: 24ch; line-height: 1.7; }

/* =============================================================
   9. Work rows
   ============================================================= */
.work { padding: clamp(4rem, 10vh, 8rem) var(--gutter); }

.rows { border-top: 1px solid var(--line); }

.row { border-bottom: 1px solid var(--line); }

.row-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "num name icon" "num meta icon";
  align-items: center;
  column-gap: clamp(1rem, 3vw, 2.5rem);
  row-gap: 0.2rem;
  width: 100%;
  padding: clamp(1.4rem, 3.5vh, 2.4rem) clamp(0.4rem, 1.5vw, 1.4rem);
  text-align: left;
  transition: background-color 0.25s var(--ease-out), color 0.25s var(--ease-out), padding-left 0.4s var(--ease-soft);
}
.row-head:hover {
  background: var(--ink);
  color: var(--bg);
  padding-left: clamp(0.9rem, 2.5vw, 2.2rem);
}
.row-head:hover .row-num,
.row-head:hover .row-role,
.row-head:hover .row-year { color: var(--bg); opacity: 0.65; }

.row-num { grid-area: num; color: var(--mute); align-self: start; padding-top: 0.5rem; }

.row-name {
  grid-area: name;
  font-size: clamp(1.7rem, 4.5vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.row-meta {
  grid-area: meta;
  display: flex; flex-wrap: wrap; gap: 0.3rem 1.4rem;
  align-items: baseline;
}
.row-role { font-size: 0.9rem; color: var(--mute); font-weight: 500; transition: color 0.25s; }
.row-year { color: var(--mute); transition: color 0.25s; }

.row-icon {
  grid-area: icon;
  font-size: 1.6rem; font-weight: 300;
  color: var(--accent);
  transition: transform 0.45s var(--ease-soft), color 0.25s;
  line-height: 1;
}
.row-head:hover .row-icon { color: var(--bg); }
.row.is-open .row-icon { transform: rotate(45deg); }

.row-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.65s var(--ease-soft);
}
.row.is-open .row-panel { grid-template-rows: 1fr; }
.row-panel-inner {
  overflow: hidden; min-height: 0;
  padding: 0 clamp(0.4rem, 1.5vw, 1.4rem);
}
.row.is-open .row-panel-inner { padding-bottom: clamp(1.8rem, 4vh, 3rem); }

.row-desc {
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  font-weight: 500;
  max-width: 62ch;
  margin-bottom: 1.4rem;
  color: var(--ink);
}

.row-bullets { display: grid; gap: 0.8rem; max-width: 70ch; margin-bottom: 1.6rem; }
.row-bullets li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--mute);
  font-size: 0.96rem;
}
.row-bullets li::before {
  content: "→"; position: absolute; left: 0; top: 0;
  color: var(--accent);
}

.row-tags { color: var(--mute); letter-spacing: 0.08em; text-transform: none; }

/* =============================================================
   9b. Process (pinned scroll)
   ============================================================= */
.process { padding: 0 var(--gutter); }

.process-pin {
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding-block: clamp(4rem, 10vh, 7rem);
}

.process-count {
  display: none;
  color: var(--mute);
  margin-bottom: clamp(1.5rem, 4vh, 2.5rem);
}
.process-count [data-process-current] { color: var(--accent); }

/* Mobile / no-JS default: steps stacked as a simple list */
.process-step {
  padding: 1.8rem 0;
  border-top: 1px solid var(--line-soft);
}

.process-step-title {
  font-size: clamp(2rem, 5.5vw, 4.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  max-width: 16ch;
  margin-bottom: 1rem;
}
.process-step-title em {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  color: var(--accent); letter-spacing: 0;
}

.process-step-desc {
  color: var(--mute);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  max-width: 52ch;
}

.process-bar { display: none; }

/* Animated (pinned) mode — applied by JS on desktop */
.process-stage.is-anim .process-count { display: block; }
.process-stage.is-anim .process-steps {
  position: relative;
  min-height: clamp(16rem, 44vh, 26rem);
}
.process-stage.is-anim .process-step {
  position: absolute; top: 0; left: 0; width: 100%;
  padding: 0; border: 0;
  opacity: 0; visibility: hidden;
}
.process-stage.is-anim .process-bar {
  display: block;
  height: 2px; background: var(--line-soft);
  margin-top: clamp(2rem, 5vh, 3.5rem);
}
.process-stage.is-anim .process-bar span {
  display: block; height: 100%;
  background: var(--accent);
  transform: scaleX(0); transform-origin: left;
}

/* =============================================================
   10. Stack
   ============================================================= */
.stack { padding: clamp(4rem, 10vh, 8rem) var(--gutter); }

.stack-list { border-top: 1px solid var(--line); }

.stack-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  padding: 1.5rem clamp(0.4rem, 1.5vw, 1.4rem);
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 0.3s var(--ease-out);
}
.stack-row:hover { background: var(--bg-2); }
.stack-row dt { color: var(--accent); }
.stack-row dd {
  margin: 0;
  font-size: clamp(1rem, 1.7vw, 1.25rem);
  font-weight: 500;
  color: var(--ink);
}

/* =============================================================
   11. Education
   ============================================================= */
.edu { padding: clamp(4rem, 10vh, 8rem) var(--gutter); }

.edu-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  border-top: 1px solid var(--line);
  padding-top: 2.5rem;
}

.edu-h { color: var(--accent); margin-bottom: 1.2rem; }

.edu-list { display: grid; gap: 1.1rem; }
.edu-list li { display: flex; flex-direction: column; gap: 0.15rem; }
.edu-list strong { font-weight: 600; font-size: 1rem; }
.edu-list .mono { color: var(--mute); }

/* =============================================================
   12. Contact
   ============================================================= */
.contact {
  position: relative;
  padding: clamp(7rem, 20vh, 14rem) var(--gutter) clamp(5rem, 14vh, 9rem);
  isolation: isolate;
  overflow: clip;
}

.contact-gradient {
  position: absolute; inset: -20% -10%; z-index: -1;
  background:
    radial-gradient(circle 700px at calc(100% - var(--mx, 50%)) 80%,
      rgba(91, 61, 255, 0.30) 0%, transparent 55%),
    radial-gradient(circle 560px at var(--mx, 50%) 100%,
      rgba(194, 255, 69, 0.10) 0%, transparent 50%);
  filter: blur(52px);
}

.contact-title {
  font-size: clamp(2.4rem, 6.5vw, 5.6rem);
  font-weight: 700;
  max-width: 14ch;
  margin-bottom: clamp(2.5rem, 7vh, 4.5rem);
}
.contact-title em {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  color: var(--accent);
}

.contact-email {
  display: inline-block;
  position: relative;
  font-size: clamp(1.5rem, 4.6vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: clamp(2rem, 5vh, 3.2rem);
  word-break: break-all;
}
.contact-email::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 3px; background: var(--accent);
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.55s var(--ease-soft);
}
.contact-email:hover { color: var(--accent); transition: color 0.3s; }
.contact-email:hover::after { transform: scaleX(1); transform-origin: left; }

.contact-links { display: flex; flex-wrap: wrap; gap: 1.8rem; }
.contact-link {
  color: var(--mute);
  padding: 0.3rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.3s, border-color 0.3s;
}
.contact-link:hover { color: var(--accent); border-color: var(--accent); }

/* =============================================================
   13. Footer
   ============================================================= */
.footer {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem;
  padding: 1.6rem var(--gutter) 2rem;
  border-top: 1px solid var(--line-soft);
  color: var(--mute);
}

/* =============================================================
   14. Responsive
   ============================================================= */
@media (min-width: 540px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 0 2rem; }
}

@media (min-width: 720px) {
  .stack-row { grid-template-columns: 220px 1fr; gap: 2rem; align-items: baseline; }
  .edu-grid { grid-template-columns: repeat(3, 1fr); gap: 2rem; }
  .row-head {
    grid-template-columns: 3.5rem 1fr auto auto;
    grid-template-areas: "num name meta icon";
  }
  .row-meta { flex-direction: column; align-items: flex-end; gap: 0.3rem; text-align: right; }
  .row-num { align-self: center; padding-top: 0; }
}

@media (min-width: 960px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 539px) {
  .nav-links { display: none; }
}

/* =============================================================
   15. Reduced-motion (only intrusive effects)
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .hero-scrollhint { animation: none; }
  /* Mouse gradient, hovers, fades and count-ups keep running — they're functional. */
}