/* =========================================================
   Yunus Emre Göl — personal site
   ========================================================= */
:root {
  --bg: #07090c;
  --bg-2: #0b0e13;
  --surface: #0f131a;
  --surface-2: #141a23;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #e8eaee;
  --muted: #8a93a3;
  --dim: #5b6372;
  --accent: #5cf2b0;
  --accent-2: #7aa2ff;
  --accent-soft: rgba(92, 242, 176, 0.12);
  --radius: 14px;
  --wrap: 1180px;
  --font: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
b, strong { font-weight: 600; color: var(--text); }
::selection { background: var(--accent); color: #04110b; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.muted { color: var(--muted); }
.dim { color: var(--dim); }
.ok { color: var(--accent); }

.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--accent); color: #04110b; padding: 10px 14px; border-radius: 8px; font-weight: 600;
}
.skip:focus { top: 16px; }

/* subtle grain + grid on body */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 70%);
  opacity: .35;
}
main, header, footer { position: relative; z-index: 1; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  height: 48px; padding: 0 22px; border-radius: 999px;
  font: 500 15px/1 var(--font); letter-spacing: -.005em;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .25s var(--ease), background .25s, border-color .25s, color .25s;
  white-space: nowrap;
}
.btn--sm { height: 38px; padding: 0 16px; font-size: 14px; }
.btn--primary { background: var(--accent); color: #04110b; }
.btn--primary:hover { transform: translateY(-2px); background: #7ff7c3; }
.btn--ghost { background: rgba(255,255,255,.03); border-color: var(--line-2); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(7, 9, 12, .72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav__inner { display: flex; align-items: center; gap: 28px; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: 14px; }
.brand__mark {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px;
  border: 1px solid rgba(92,242,176,.45); color: var(--accent); font-weight: 600; font-size: 13px;
  background: var(--accent-soft);
}
.nav__links { display: flex; gap: 4px; margin-left: auto; }
.nav__links a {
  padding: 8px 14px; border-radius: 999px; font-size: 14px; color: var(--muted);
  transition: color .2s, background .2s;
}
.nav__links a:hover, .nav__links a.is-active { color: var(--text); background: rgba(255,255,255,.05); }
.nav__toggle {
  display: none; margin-left: auto; width: 42px; height: 42px; border-radius: 10px;
  border: 1px solid var(--line-2); background: transparent; cursor: pointer; position: relative;
}
.nav__toggle span {
  position: absolute; left: 11px; right: 11px; height: 1.5px; background: var(--text);
  transition: transform .3s var(--ease), top .3s var(--ease);
}
.nav__toggle span:first-child { top: 16px; }
.nav__toggle span:last-child { top: 24px; }
.nav__toggle[aria-expanded="true"] span:first-child { top: 20px; transform: rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { top: 20px; transform: rotate(-45deg); }
.mobile-menu {
  display: flex; flex-direction: column; padding: 8px 28px 24px;
  background: rgba(7,9,12,.96); border-bottom: 1px solid var(--line);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 18px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center; padding: 120px 0 90px; overflow: hidden;
}
#mesh { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero__fade {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 20% 45%, rgba(7,9,12,.85) 0%, transparent 70%),
    linear-gradient(to bottom, transparent 70%, var(--bg) 100%);
}
.hero__inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.25fr .9fr; gap: 64px; align-items: center;
}
.status {
  display: inline-flex; align-items: center; gap: 10px; margin: 0 0 28px;
  padding: 7px 14px 7px 12px; border-radius: 999px;
  border: 1px solid var(--line-2); background: rgba(15,19,26,.6);
  font: 500 13px/1 var(--mono); color: var(--muted);
}
.status .sep { color: var(--dim); }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); position: relative; }
.pulse::after {
  content: ""; position: absolute; inset: -4px; border-radius: 50%;
  border: 1px solid var(--accent); animation: pulse 2s var(--ease) infinite;
}
@keyframes pulse { from { transform: scale(.6); opacity: 1; } to { transform: scale(1.8); opacity: 0; } }

.hero__title {
  margin: 0; font-weight: 600; letter-spacing: -.045em; line-height: .98;
  font-size: clamp(42px, 6.4vw, 82px);
}
.type-line { display: block; white-space: nowrap; min-height: 1em; }
.type {
  background: linear-gradient(100deg, var(--accent) 10%, var(--accent-2) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.caret {
  display: inline-block; width: .07em; height: .82em; margin-left: .06em;
  background: var(--accent); vertical-align: -.04em; animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.hero__lead { max-width: 560px; margin: 28px 0 36px; font-size: 19px; color: var(--muted); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* terminal card */
.term {
  border: 1px solid var(--line-2); border-radius: 16px; overflow: hidden;
  background: rgba(13, 17, 23, .78); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 30px 80px -20px rgba(0,0,0,.7), 0 0 0 1px rgba(92,242,176,.04) inset;
}
.term__bar {
  display: flex; align-items: center; gap: 7px; padding: 12px 16px;
  border-bottom: 1px solid var(--line); background: rgba(255,255,255,.02);
}
.term__bar .dot { width: 10px; height: 10px; border-radius: 50%; background: #2a313c; }
.term__title { margin-left: 10px; font: 12px var(--mono); color: var(--dim); }
.term__body { padding: 22px; }
.term__id { display: flex; align-items: center; gap: 16px; padding-bottom: 20px; border-bottom: 1px dashed var(--line-2); }
.term__id img {
  width: 72px; height: 72px; border-radius: 14px; object-fit: cover;
  filter: grayscale(.25) contrast(1.05);
  border: 1px solid var(--line-2);
}
.term__name { font-weight: 600; font-size: 18px; letter-spacing: -.01em; }
.term__role { font-size: 13px; color: var(--muted); }
.term__code {
  margin: 18px 0 0; font: 13px/1.75 var(--mono); color: var(--text);
  white-space: pre; overflow-x: auto;
}
.term__code .p { color: var(--accent); }
.term__code .c { color: var(--dim); }
.term__code .k { color: var(--accent-2); }

.scroll-hint {
  position: absolute; left: 50%; bottom: 28px; z-index: 1; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  font: 11px var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--dim);
}
.scroll-hint i { width: 1px; height: 40px; background: linear-gradient(var(--dim), transparent); position: relative; overflow: hidden; }
.scroll-hint i::after {
  content: ""; position: absolute; left: 0; top: -40%; width: 1px; height: 40%; background: var(--accent);
  animation: drop 2s var(--ease) infinite;
}
@keyframes drop { to { top: 100%; } }

/* ---------- Metrics ---------- */
.metrics { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.metrics__grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.metric { padding: 44px 28px; border-left: 1px solid var(--line); }
.metric:first-child { border-left: 0; padding-left: 0; }
.metric__n { font-size: clamp(40px, 5vw, 60px); font-weight: 600; letter-spacing: -.045em; line-height: 1; }
.metric__n span { font-variant-numeric: tabular-nums; }
.metric__l { margin-top: 12px; font-size: 14px; color: var(--muted); max-width: 200px; line-height: 1.45; }

/* ---------- Sections ---------- */
.section { padding: 140px 0; }
.section--alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__head { margin-bottom: 64px; }
.section__head--row { display: flex; justify-content: space-between; align-items: flex-end; gap: 48px; flex-wrap: wrap; }
.section__head h2, .contact__title {
  margin: 18px 0 0; font-size: clamp(34px, 4.6vw, 58px); font-weight: 600; letter-spacing: -.04em; line-height: 1.04;
}
.section__note { max-width: 380px; margin: 0; color: var(--muted); font-size: 15px; }
.eyebrow {
  display: inline-block; font: 500 12px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent);
}

/* About */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.about .section__head { margin: 0; position: sticky; top: 120px; align-self: start; }
.about__body p { margin: 0 0 22px; font-size: 19px; color: var(--muted); }
.principles { list-style: none; margin: 40px 0 0; padding: 0; border-top: 1px solid var(--line); }
.principles li { display: flex; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 16px; }
.principles__k { font: 12px var(--mono); color: var(--accent); padding-top: 4px; }

/* Architecture diagram */
.arch {
  display: grid; grid-template-columns: 1fr 2.2fr 1fr; gap: 28px; align-items: center;
  padding: 36px; border: 1px solid var(--line); border-radius: 20px;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(92,242,176,.06), transparent 60%),
    var(--surface);
  position: relative;
}
.arch__label { font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); margin-bottom: 14px; }
.arch__col { display: flex; flex-direction: column; gap: 10px; position: relative; }
.arch__col--src::after, .arch__col--dst::before {
  content: ""; position: absolute; top: 50%; width: 28px; height: 1px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 4px, transparent 4px 8px);
  background-size: 8px 1px; animation: flow 0.6s linear infinite;
}
.arch__col--src::after { right: -28px; }
.arch__col--dst::before { left: -28px; }
@keyframes flow { to { background-position: 8px 0; } }

.node, .svc, .bus, .obs {
  border: 1px solid var(--line-2); border-radius: 10px; background: var(--surface-2);
  transition: border-color .25s, background .25s, opacity .25s, transform .25s var(--ease);
}
.node { padding: 12px 14px; font-size: 14px; }
.core { display: flex; flex-direction: column; gap: 12px; padding: 16px; border: 1px dashed var(--line-2); border-radius: 14px; }
.core__row { display: flex; gap: 10px; }
.svc { flex: 1; padding: 12px 14px; font-size: 14px; font-weight: 500; }
.svc small, .bus small { display: block; font: 11px var(--mono); color: var(--dim); margin-top: 3px; font-weight: 400; }
.bus {
  position: relative; overflow: hidden; padding: 14px 16px; font-weight: 600; font-size: 15px;
  border-color: rgba(92,242,176,.4); background: linear-gradient(90deg, rgba(92,242,176,.08), rgba(122,162,255,.08));
}
.bus__pkt {
  position: absolute; bottom: 6px; left: -10px; width: 18px; height: 3px; border-radius: 2px;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
  animation: pkt 3.2s linear infinite;
}
.bus__pkt:nth-of-type(2) { animation-delay: 1.07s; background: var(--accent-2); box-shadow: 0 0 10px var(--accent-2); }
.bus__pkt:nth-of-type(3) { animation-delay: 2.13s; }
@keyframes pkt { to { left: 105%; } }
.obs {
  margin-top: 12px; padding: 10px 14px; font: 12px var(--mono); color: var(--muted); text-align: center;
  border-style: dashed;
}
.arch.is-focus [data-layer] { opacity: .3; }
.arch.is-focus [data-layer].is-lit { opacity: 1; border-color: var(--accent); background: rgba(92,242,176,.08); transform: translateY(-2px); }

.caps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 28px; }
.cap {
  padding: 28px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  transition: border-color .3s, transform .3s var(--ease);
  position: relative; overflow: hidden;
}
.cap::before {
  content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity .3s;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(92,242,176,.10), transparent 40%);
}
.cap:hover { border-color: var(--line-2); transform: translateY(-3px); }
.cap:hover::before { opacity: 1; }
.cap__icon {
  width: 44px; height: 44px; display: grid; place-items: center; border-radius: 11px;
  background: var(--accent-soft); border: 1px solid rgba(92,242,176,.25);
}
.cap__icon svg { width: 22px; height: 22px; fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.cap h3 { margin: 22px 0 8px; font-size: 18px; font-weight: 600; letter-spacing: -.015em; }
.cap p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.55; position: relative; }

/* ---------- Timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before {
  content: ""; position: absolute; left: 236px; top: 10px; bottom: 10px; width: 1px;
  background: linear-gradient(var(--accent), var(--line-2) 18%, var(--line) 90%, transparent);
}
.job { display: grid; grid-template-columns: 200px 1fr; gap: 72px; padding: 0 0 56px; position: relative; }
.job::before {
  content: ""; position: absolute; left: 231px; top: 9px; width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg); border: 1.5px solid var(--line-2);
}
.job.is-current::before { border-color: var(--accent); background: var(--accent); box-shadow: 0 0 0 5px rgba(92,242,176,.15); }
.job__meta { text-align: right; padding-top: 2px; }
.job__date { display: block; font: 500 13px var(--mono); color: var(--text); }
.job__loc { display: block; font: 12px var(--mono); color: var(--dim); margin-top: 4px; }
.job h3 { margin: 0; font-size: 22px; font-weight: 600; letter-spacing: -.02em; line-height: 1.3; }
.job .at { color: var(--muted); font-weight: 400; }
.job.is-current .at { color: var(--accent); }
.job__sum { margin: 8px 0 14px; color: var(--muted); font-size: 16px; }
.job__list { margin: 0; padding: 0; list-style: none; }
.job__list li { position: relative; padding-left: 20px; margin: 8px 0; color: var(--muted); font-size: 15.5px; line-height: 1.55; }
.job__list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 1px; background: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tags span {
  font: 12px var(--mono); color: var(--muted); padding: 5px 10px; border-radius: 6px;
  border: 1px solid var(--line-2); background: rgba(255,255,255,.02);
}

/* ---------- Stack ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  height: 36px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--line-2);
  background: transparent; color: var(--muted); font: 500 13px var(--font); cursor: pointer;
  transition: all .2s;
}
.chip:hover { color: var(--text); border-color: var(--dim); }
.chip.is-on { background: var(--text); color: var(--bg); border-color: var(--text); }
.stack {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
.stack li {
  padding: 26px 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  font-size: 16px; font-weight: 500; letter-spacing: -.01em; position: relative;
  transition: opacity .3s, color .3s, background .3s;
}
.stack li::after {
  content: attr(data-cat); position: absolute; right: 12px; top: 10px;
  font: 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--dim); opacity: 0; transition: opacity .2s;
}
.stack li:hover { background: rgba(92,242,176,.05); color: var(--accent); }
.stack li:hover::after { opacity: 1; }
.stack li.is-off { opacity: .14; }
.domains {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; margin-top: 40px;
  font-size: 15px; color: var(--muted);
}
.domains__k { font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.domains span:not(.domains__k)::before { content: "◆"; font-size: 7px; color: var(--dim); margin-right: 10px; vertical-align: 2px; }

/* ---------- Education ---------- */
.edu { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; }
.edu__list { border-top: 1px solid var(--line); }
.edu__item { display: grid; grid-template-columns: 130px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.edu__y { font: 13px var(--mono); color: var(--dim); padding-top: 3px; }
.edu__item b { font-size: 18px; letter-spacing: -.01em; }
.edu__item div { color: var(--muted); }
.edu__item div span { display: block; color: var(--muted); font-size: 15px; margin-top: 2px; }
.edu__side { display: flex; flex-direction: column; gap: 16px; }
.card { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.card__k { font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }
.card p { margin: 0; color: var(--muted); }
.card--award { background: linear-gradient(135deg, rgba(92,242,176,.08), rgba(122,162,255,.06)), var(--surface); border-color: rgba(92,242,176,.22); }
.certs { list-style: none; margin: 0; padding: 0; }
.certs li { padding: 12px 0; border-top: 1px solid var(--line); font-size: 15px; }
.certs li:first-child { border-top: 0; padding-top: 0; }
.certs li b { display: block; font-weight: 500; line-height: 1.4; }
.certs li span { font: 12px var(--mono); color: var(--dim); }
.langs { display: flex; flex-direction: column; gap: 14px; }
.langs div { display: grid; grid-template-columns: 76px 1fr 84px; gap: 14px; align-items: center; font-size: 15px; }
.langs i { height: 4px; border-radius: 4px; background: var(--line-2); position: relative; overflow: hidden; }
.langs i::after { content: ""; position: absolute; inset: 0; width: var(--w); background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 4px; }
.langs em { font: normal 12px var(--mono); color: var(--dim); text-align: right; }

/* ---------- Contact ---------- */
.contact { padding: 160px 0 140px; position: relative; overflow: hidden; border-top: 1px solid var(--line); }
.contact::before {
  content: ""; position: absolute; left: 50%; top: 100%; width: 1100px; height: 700px; transform: translate(-50%, -55%);
  background: radial-gradient(ellipse, rgba(92,242,176,.16), rgba(122,162,255,.08) 40%, transparent 70%);
  pointer-events: none;
}
.contact__inner { position: relative; text-align: center; }
.contact__title { font-size: clamp(40px, 6.4vw, 84px); line-height: 1; }
.grad { background: linear-gradient(100deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.contact__lead { color: var(--muted); font-size: 19px; max-width: 540px; margin: 24px auto 44px; }
.contact__actions { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 12px; }
.mail {
  display: inline-flex; align-items: center; gap: 14px; height: 56px; padding: 0 12px 0 26px; border-radius: 999px;
  background: var(--text); color: var(--bg); font-weight: 600; font-size: 17px;
  transition: transform .25s var(--ease), background .25s;
}
.mail:hover { transform: translateY(-2px); background: var(--accent); }
.mail__go { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--bg); color: var(--text); font-size: 15px; transition: transform .3s var(--ease); }
.mail:hover .mail__go { transform: rotate(45deg); }
.contact .btn { height: 56px; }

/* ---------- Footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 28px 0; font-size: 13px; color: var(--dim); }
.foot__inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot__mono { font-family: var(--mono); }
.foot a:hover { color: var(--text); }

.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 80; transform: translate(-50%, 20px);
  padding: 12px 18px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--line-2);
  font: 13px var(--mono); color: var(--accent); opacity: 0; pointer-events: none; transition: all .3s var(--ease);
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }

/* ---------- Research & AI ---------- */
.research { display: grid; grid-template-columns: 1.55fr 1fr; gap: 20px; align-items: stretch; }
.thesis {
  padding: 36px; border: 1px solid var(--line); border-radius: 20px; position: relative; overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 100% 0%, rgba(122,162,255,.09), transparent 60%), var(--surface);
}
.thesis__top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 6px 12px; border-radius: 999px;
  border: 1px solid rgba(92,242,176,.35); background: var(--accent-soft); color: var(--accent); font: 500 12px var(--mono);
}
.badge .pulse { width: 6px; height: 6px; }
.thesis__inst { font: 12px var(--mono); color: var(--dim); }
.thesis h3 { margin: 22px 0 14px; font-size: clamp(22px, 2.3vw, 28px); font-weight: 600; letter-spacing: -.025em; line-height: 1.2; max-width: 640px; }
.thesis > p { margin: 0; color: var(--muted); font-size: 16px; max-width: 680px; }
.pipe { list-style: none; margin: 30px 0 26px; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; counter-reset: none; }
.pipe li {
  position: relative; padding: 14px 12px; border: 1px solid var(--line-2); border-radius: 10px; background: var(--surface-2);
  font-size: 14px; transition: border-color .25s, background .25s;
}
.pipe li:hover { border-color: var(--accent); background: rgba(92,242,176,.06); }
.pipe li:not(:last-child)::after {
  content: ""; position: absolute; right: -9px; top: 50%; width: 10px; height: 1px; z-index: 1;
  background: repeating-linear-gradient(90deg, var(--accent) 0 3px, transparent 3px 5px);
}
.pipe__n { display: block; font: 11px var(--mono); color: var(--accent); margin-bottom: 6px; }
.pipe b { display: block; font-weight: 600; font-size: 14px; }
.pipe small { display: block; margin-top: 4px; font: 11px/1.45 var(--mono); color: var(--dim); }
.pipe li.is-pulse { border-color: var(--accent); background: rgba(92,242,176,.07); }
.thesis__foot .tags { margin-top: 0; }
.thesis__paper { margin: 18px 0 0; font: 13px var(--mono); color: var(--muted); }

.applied { display: flex; flex-direction: column; gap: 12px; }
.applied__k { font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); padding: 4px 0 6px; }
.ai {
  flex: 1; display: flex; gap: 18px; align-items: flex-start; padding: 22px; position: relative;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  transition: border-color .3s, transform .3s var(--ease);
}
.ai:hover { border-color: var(--line-2); transform: translateY(-2px); }
.ai .cap__icon { flex: none; }
.ai h3 { margin: 2px 0 6px; font-size: 17px; font-weight: 600; letter-spacing: -.015em; }
.ai p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.55; }
.ai--next { border-style: dashed; border-color: rgba(92,242,176,.3); background: linear-gradient(135deg, rgba(92,242,176,.06), rgba(122,162,255,.05)), var(--surface); }
.ai__tag {
  position: absolute; top: 14px; right: 14px; font: 500 10px var(--mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); padding: 3px 8px; border-radius: 6px; border: 1px solid rgba(92,242,176,.35);
}
#research .domains { margin-top: 36px; }
.ai--next h3 { padding-right: 52px; }
.ai { align-items: center; }

@media (max-width: 1080px) {
  .research { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .pipe { grid-template-columns: 1fr; gap: 10px; }
  .pipe li { display: grid; grid-template-columns: 34px 1fr; column-gap: 8px; }
  .pipe__n { grid-row: span 2; margin: 2px 0 0; }
  .pipe li:not(:last-child)::after { right: auto; left: 22px; top: 100%; width: 1px; height: 10px;
    background: repeating-linear-gradient(180deg, var(--accent) 0 3px, transparent 3px 5px); }
}
@media (max-width: 600px) {
  .thesis { padding: 22px 18px; }
  .ai { padding: 18px; gap: 14px; }
}

/* ---------- Selected work ---------- */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.case {
  padding: 30px 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface);
  display: flex; flex-direction: column; transition: border-color .3s, transform .3s var(--ease);
}
.case:hover { border-color: var(--line-2); transform: translateY(-3px); }
.case__top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.case__n { font: 500 13px var(--mono); color: var(--accent); }
.case__org { font: 12px var(--mono); color: var(--dim); }
.case h3 { margin: 18px 0 20px; font-size: 22px; font-weight: 600; letter-spacing: -.02em; line-height: 1.25; }
.case dl { margin: 0; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.case dt { font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); margin-top: 10px; }
.case dt:first-child { margin-top: 0; }
.case dd { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.55; }
.case dt:last-of-type { color: var(--accent); }
.case dd:last-of-type { color: var(--text); padding-top: 12px; border-top: 1px dashed var(--line-2); margin-top: 2px; }
.case dt:last-of-type { padding-top: 6px; }
.lead {
  display: grid; grid-template-columns: 180px 1fr; gap: 32px; margin-top: 16px; padding: 28px;
  border: 1px solid var(--line); border-radius: 18px;
  background: linear-gradient(135deg, rgba(92,242,176,.05), rgba(122,162,255,.04)), var(--bg-2);
}
.lead__k { font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); padding-top: 3px; }
.lead__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.lead__grid b { display: block; font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.lead__grid span { display: block; color: var(--muted); font-size: 14px; line-height: 1.5; }

/* Earlier career */
.earlier { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 6px; }
.earlier__item { padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.earlier__d { display: block; font: 11px var(--mono); color: var(--dim); margin-bottom: 10px; }
.earlier__item b { display: block; font-size: 16px; font-weight: 600; }
.earlier__item em { display: block; font-style: normal; font-size: 13px; color: var(--accent); margin: 4px 0 10px; line-height: 1.4; }
.earlier__item em .note { color: var(--dim); }
.earlier__item p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }
.job--earlier { padding-bottom: 0; }
.earlier--2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 1080px) {
  .cases { grid-template-columns: 1fr; }
  .lead { grid-template-columns: 1fr; gap: 18px; }
  .lead__grid { grid-template-columns: repeat(2, 1fr); }
  .earlier, .earlier--2 { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .case { padding: 24px 20px; }
  .lead { padding: 22px 18px; }
  .lead__grid { grid-template-columns: 1fr; gap: 16px; }
}

/* ---------- Experience: storyline + expandable details ---------- */
.job__body summary { list-style: none; cursor: pointer; display: block; outline-offset: 6px; }
.job__body summary::-webkit-details-marker { display: none; }
.job__role { display: block; font: 500 13px/1.5 var(--mono); color: var(--text); letter-spacing: .01em; }
.job__role .at { color: var(--muted); font-weight: 400; }
.job.is-current .job__role .at { color: var(--accent); }
.job .job__line {
  margin: 10px 0 0; font-size: clamp(22px, 2.4vw, 30px); font-weight: 600; letter-spacing: -.025em; line-height: 1.22;
  max-width: 820px; transition: color .25s;
}
.job .job__body summary:hover .job__line { color: #fff; }
.job__more {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 16px;
  font: 500 12px var(--mono); color: var(--muted); letter-spacing: .04em;
  transition: color .2s;
}
.job__body summary:hover .job__more { color: var(--accent); }
.job__more i {
  position: relative; width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--line-2);
  transition: transform .3s var(--ease), border-color .2s;
}
.job__more i::before, .job__more i::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 9px; height: 1.5px; background: currentColor;
  transform: translate(-50%, -50%);
}
.job__more i::after { transform: translate(-50%, -50%) rotate(90deg); transition: opacity .2s; }
.job__body[open] .job__more i { transform: rotate(180deg); border-color: var(--accent); }
.job__body[open] .job__more i::after { opacity: 0; }
.when-open { display: none; }
.job__body[open] .when-open { display: inline; }
.job__body[open] .when-closed { display: none; }
.job__detail { padding-top: 18px; margin-top: 18px; border-top: 1px dashed var(--line-2); animation: fadeDown .35s var(--ease); }
@keyframes fadeDown { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.job__detail .job__sum { margin-top: 0; }
.job__cols { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; }
.job__k { display: block; font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin: 6px 0 4px; }
.timeline__foot { margin: 36px 0 0; padding-left: 272px; font-size: 14px; color: var(--muted); }
.timeline__foot a { color: var(--text); border-bottom: 1px solid var(--line-2); }
.timeline__foot a:hover { color: var(--accent); border-color: var(--accent); }
@media (max-width: 900px) {
  .job__cols { grid-template-columns: 1fr; gap: 8px; }
  .timeline__foot { padding-left: 32px; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .scroll-hint { display: none; }
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .term { max-width: 520px; }
  .caps { grid-template-columns: repeat(2, 1fr); }
  .arch { grid-template-columns: 1fr; }
  .arch__col { flex-direction: row; flex-wrap: wrap; }
  .arch__col .arch__label { width: 100%; margin-bottom: 0; }
  .arch__col .node { flex: 1; text-align: center; }
  .arch__col--src::after, .arch__col--dst::before { display: none; }
}
@media (max-width: 900px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: block; }
  .about, .edu { grid-template-columns: 1fr; gap: 40px; }
  .about .section__head { position: static; }
  .metrics__grid { grid-template-columns: repeat(2, 1fr); }
  .metric { padding: 32px 20px; }
  .metric:nth-child(odd) { border-left: 0; padding-left: 0; }
  .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .timeline::before { left: 5px; }
  .job { grid-template-columns: 1fr; gap: 8px; padding-left: 32px; }
  .job::before { left: 0; top: 6px; }
  .job__meta { text-align: left; display: flex; gap: 14px; flex-wrap: wrap; }
  .job__loc { margin-top: 0; }
  .section { padding: 100px 0; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .mobile-menu { padding: 8px 16px 24px; }
  .hero { padding: 104px 0 80px; }
  .hero__lead { font-size: 17px; }
  .brand__name { display: none; }
  .caps { grid-template-columns: 1fr; }
  .arch { padding: 18px; }
  .core__row { flex-wrap: wrap; }
  .core__row .svc { min-width: calc(50% - 5px); }
  .arch__col .node { flex: 1 1 100%; }
  .stack { grid-template-columns: repeat(2, 1fr); }
  .stack li { padding: 20px 14px; font-size: 15px; }
  .edu__item { grid-template-columns: 1fr; gap: 4px; }
  .langs div { grid-template-columns: 70px 1fr 76px; }
  .section__head { margin-bottom: 44px; }
  .about__body p { font-size: 17px; }
  .mail { font-size: 15px; height: 52px; padding-left: 20px; }
  .contact .btn { height: 52px; }
  .term__body { padding: 18px; }
  .term__code { font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}