/* ══════════════════════════════════════════════════════════
   ANSH SINGH — portfolio
   theme: plain black. Pure black surface, white text ramp,
   and one --accent token that every highlight routes through.

   ► To introduce the third (highlight) colour, change ONLY
     --accent and --accent-rgb below. Nothing else needs editing.
   ══════════════════════════════════════════════════════════ */

:root{
  /* surfaces — plain black, no tint */
  --ink:        #000000;
  --ink-2:      #000000;
  --ink-3:      #060606;
  --panel:      rgba(255,255,255,.03);
  --panel-2:    rgba(255,255,255,.065);
  --line:       rgba(255,255,255,.10);
  --line-2:     rgba(255,255,255,.20);

  /* ink */
  /* ramp is contrast-checked against --ink:
     text 21:1 · text-2 12.7:1 · muted 7.1:1 · faint 4.6:1 — all WCAG AA */
  --text:       #ffffff;
  --text-2:     #c9c9c9;
  --muted:      #969696;
  --faint:      #757575;

  /* highlight — the single swap point for the third colour */
  --accent:      #ffffff;
  --accent-rgb:  255,255,255;
  --accent-soft: rgba(var(--accent-rgb), .10);
  --accent-line: rgba(var(--accent-rgb), .32);

  /* kept as a token so callers stay unchanged when --accent gains a hue */
  --grad: var(--accent);

  /* type */
  --f-display: 'Space Grotesk', 'Segoe UI Variable Display', 'Segoe UI', system-ui, sans-serif;
  --f-body:    'Inter', 'Segoe UI Variable Text', 'Segoe UI', system-ui, sans-serif;
  --f-mono:    'JetBrains Mono', 'Cascadia Mono', ui-monospace, 'SF Mono', Consolas, monospace;

  /* metrics */
  --wrap: 1220px;
  --pad:  clamp(20px, 5vw, 56px);
  --r:    16px;
  --r-lg: 22px;

  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }

html{
  scroll-behavior:smooth;
  scroll-padding-top:90px;
  color-scheme:dark;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.7;
  letter-spacing:-.006em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg,canvas{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-family:var(--f-display); font-weight:600; line-height:1.06; letter-spacing:-.03em; margin:0; }
p{ margin:0 0 1em; }
b,strong{ color:var(--text); font-weight:600; }
em{ font-style:normal; color:var(--accent); }
ul{ margin:0; padding:0; list-style:none; }

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

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:6px;
}

.skip-link{
  position:fixed; top:-100px; left:16px; z-index:200;
  padding:10px 16px; border-radius:10px;
  background:var(--accent); color:var(--ink); font-weight:600; font-size:14px;
  transition:top .2s var(--ease);
}
.skip-link:focus{ top:16px; }

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--pad);
}

/* ── scroll rail ────────────────────────────────────────── */
.scroll-rail{
  position:fixed; top:0; left:0; right:0; height:2px; z-index:120;
  background:rgba(255,255,255,.06);
}
.scroll-rail span{
  display:block; height:100%; width:0%;
  background:var(--accent);
}

/* ── nav — brand and Contact only; section nav lives in the dock ── */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:110;
  transition:background .35s var(--ease), border-color .35s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-stuck{
  background:rgba(0,0,0,.78);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
}
.nav__inner{
  max-width:var(--wrap); margin-inline:auto;
  padding:16px var(--pad);
  display:flex; align-items:center; gap:24px;
}

.brand{ display:flex; align-items:center; flex:0 0 auto; }
.brand__text{
  font-family:var(--f-display); font-weight:600; font-size:16px;
  letter-spacing:-.02em; color:var(--text);
}
.brand__dot{ color:var(--accent); }

.nav__contact{ margin-left:auto; }

/* ── floating dock — the primary navigation ──────────────
   Sits a fixed distance above the viewport bottom and stays
   there while the page scrolls. Rises into view once the hero
   is behind you; on sub-pages it is present from the start. */
.dock{
  position:fixed; z-index:100;
  left:50%; bottom:200px;
  transform:translateX(-50%) translateY(26px);
  display:flex; gap:4px; padding:7px;
  border:1px solid var(--line); border-radius:100px;
  background:rgba(0,0,0,.74);
  backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px);
  opacity:0; pointer-events:none;
  transition:opacity .55s var(--ease), transform .55s var(--ease);
}
.dock.is-in{
  opacity:1; pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.dock__item{
  display:flex; align-items:center; gap:9px;
  height:44px; padding:0 18px; border-radius:100px;
  font-size:13.5px; font-weight:500; color:var(--text-2);
  white-space:nowrap;
  transition:background .22s var(--ease), color .22s var(--ease);
}
.dock__item svg{ width:17px; height:17px; flex:0 0 auto; }
.dock__item:hover{ background:var(--panel-2); color:var(--text); }
.dock__item.is-current{ background:var(--accent); color:var(--ink); }

/* ── buttons ────────────────────────────────────────────── */
.btn{
  --bh:46px;
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  height:var(--bh); padding:0 22px; border-radius:calc(var(--bh)/2);
  font-family:var(--f-body); font-size:14.5px; font-weight:600; letter-spacing:-.01em;
  border:1px solid transparent; cursor:pointer; white-space:nowrap;
  transition:transform .22s var(--ease), background .22s var(--ease),
             border-color .22s var(--ease), color .22s;
}
.btn svg{ width:15px; height:15px; flex:0 0 auto; transition:transform .22s var(--ease); }
.btn--sm{ --bh:36px; padding:0 16px; font-size:13px; }

.btn--solid{ background:var(--accent); color:var(--ink); }
.btn--solid:hover{ transform:translateY(-2px); }
.btn--solid:hover svg{ transform:translateX(3px); }

.btn--ghost{ background:var(--panel); border-color:var(--line-2); color:var(--text); }
.btn--ghost:hover{ background:var(--panel-2); border-color:var(--accent); color:var(--accent); transform:translateY(-2px); }

/* ══════════════════ HERO ══════════════════ */
.hero{
  position:relative; z-index:2;
  min-height:100svh;
  display:flex; align-items:center; justify-content:center;
  padding:120px 0 90px;
  overflow:hidden;
  text-align:center;
}
.hero__net{
  position:absolute; inset:0; width:100%; height:100%;
  z-index:0; opacity:.8;
}
.hero__vignette{
  position:absolute; inset:0; z-index:1; pointer-events:none;
  background:
    radial-gradient(115% 75% at 50% 50%, transparent 18%, rgba(0,0,0,.74) 76%),
    linear-gradient(180deg, rgba(0,0,0,.85) 0%, transparent 24%, transparent 70%, var(--ink) 100%);
}
.hero__inner{
  position:relative; z-index:2;
  display:flex; flex-direction:column; align-items:center;
}

.hero__name{
  font-size:clamp(56px,12.5vw,150px);
  font-weight:700; line-height:.88; letter-spacing:-.045em;
  margin:0 0 26px;
}
.hero__line{ display:block; }
.hero__line--grad{ color:var(--accent); }

.hero__role{
  display:flex; align-items:center; justify-content:center; gap:10px;
  font-family:var(--f-mono); font-size:clamp(14px,1.9vw,19px); font-weight:500;
  color:var(--text-2); margin:0 0 40px; min-height:1.6em;
}
.hero__rolePrefix{ color:var(--accent); }
.caret{
  display:inline-block; width:9px; height:1.05em; background:var(--accent);
  translate:0 .16em; animation:blink 1.05s step-end infinite;
}
@keyframes blink{ 0%,100%{opacity:1} 50%{opacity:0} }

.hero__actions{ display:flex; flex-wrap:wrap; justify-content:center; gap:12px; }

/* ══════════════════ SECTIONS ══════════════════ */
.section{
  position:relative; z-index:2;
  padding:clamp(84px,11vw,148px) 0;
}
.section--alt{
  background:rgba(255,255,255,.014);
  border-top:1px solid rgba(255,255,255,.05);
  border-bottom:1px solid rgba(255,255,255,.05);
}

.shead{
  display:flex; align-items:center; gap:16px;
  margin-bottom:clamp(38px,5vw,62px);
}
.shead__idx{
  font-family:var(--f-mono); font-size:12px; font-weight:500;
  color:var(--accent); padding-top:4px;
}
.shead__title{
  font-size:clamp(30px,4.6vw,52px); font-weight:700; letter-spacing:-.04em;
  flex:0 0 auto;
}
.shead__rule{
  flex:1; height:1px; min-width:20px;
  background:linear-gradient(90deg, var(--line-2), transparent);
}
.shead__note{
  font-family:var(--f-mono); font-size:11.5px; color:var(--faint);
  flex:0 0 auto; letter-spacing:.02em;
}

/* ── sub-page masthead ──────────────────────────────────── */
.phead{
  position:relative; z-index:2;
  padding:clamp(130px,15vw,190px) 0 clamp(40px,6vw,70px);
  border-bottom:1px solid var(--line);
}
.phead__kicker{
  font-family:var(--f-mono); font-size:11px; letter-spacing:.2em;
  text-transform:uppercase; color:var(--accent); margin-bottom:16px;
}
.phead__title{
  font-size:clamp(40px,8vw,92px); font-weight:700; letter-spacing:-.045em;
  margin-bottom:20px;
}
.phead__sub{
  font-size:clamp(15px,1.8vw,18px); color:var(--text-2);
  max-width:56ch; margin:0;
}

/* ── about ──────────────────────────────────────────────── */
.about{ display:grid; grid-template-columns:minmax(0,1.45fr) minmax(0,1fr); gap:clamp(28px,4vw,58px); }
.about__main p{ color:var(--text-2); font-size:15.5px; max-width:62ch; }
.lede{
  font-size:clamp(18px,2.2vw,22px) !important; line-height:1.55;
  color:var(--text) !important; letter-spacing:-.018em;
  font-family:var(--f-display); font-weight:400;
  margin-bottom:1.1em !important;
}
/* forward-looking callout — reads as a console note pinned to the profile */
.about__main .want{
  margin-top:28px;
  padding:16px 20px;
  border:1px solid var(--line);
  border-left:2px solid var(--accent);
  border-radius:0 12px 12px 0;
  background:rgba(255,255,255,.025);
  font-size:14.5px;
  color:var(--text-2);
}
.about__main .want span{
  display:block;
  font-family:var(--f-mono); font-size:10px; letter-spacing:.18em;
  text-transform:uppercase; color:var(--accent); margin-bottom:7px;
}

.about__side{ display:flex; flex-direction:column; gap:16px; }

.chips{ display:flex; flex-wrap:wrap; gap:8px; margin-top:26px; }
.chip{
  padding:6px 13px; border-radius:100px;
  border:1px solid var(--line); background:var(--panel);
  font-family:var(--f-mono); font-size:11.5px; color:var(--text-2);
  transition:border-color .2s, color .2s, background .2s;
}
.chip:hover{ border-color:var(--accent-line); color:var(--accent); background:var(--accent-soft); }
.chips--sm{ margin-top:20px; gap:6px; }
.chips--sm .chip{ padding:4px 11px; font-size:10.5px; }

.card{
  border:1px solid var(--line); border-radius:var(--r);
  background:rgba(255,255,255,.022);
  padding:24px;
}
.card__kicker{
  font-family:var(--f-mono); font-size:10.5px; font-weight:500;
  letter-spacing:.16em; text-transform:uppercase; color:var(--accent);
  margin-bottom:16px;
}
.edu__deg{ font-family:var(--f-display); font-size:18px; font-weight:600; margin:0 0 4px; letter-spacing:-.02em; }
.edu__org{ color:var(--text-2); font-size:14px; margin:0 0 8px; }
.edu__mono{ font-family:var(--f-mono); font-size:11.5px; color:var(--muted); margin:0 0 16px; }
.edu__course{ font-size:12.5px; color:var(--muted); line-height:1.6; margin:0; }
.edu__course span{
  display:block; font-family:var(--f-mono); font-size:10px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--faint); margin-bottom:5px;
}

.lead-list li{ padding-left:16px; position:relative; font-size:14px; }
.lead-list li + li{ margin-top:16px; }
.lead-list li::before{
  content:""; position:absolute; left:0; top:9px;
  width:6px; height:6px; border-radius:50%; background:var(--accent);
}
.lead-list b{ display:block; font-weight:600; }
.lead-list span{ display:block; color:var(--muted); font-size:12.5px; line-height:1.55; margin-top:3px; }

/* ── skills ─────────────────────────────────────────────── */
.netviz{ position:relative; margin-bottom:30px; }
.netviz svg{ width:100%; height:180px; overflow:visible; }
.netviz__labels{
  display:grid; grid-template-columns:repeat(5,1fr);
  font-family:var(--f-mono); font-size:10px; letter-spacing:.18em;
  text-transform:uppercase; color:var(--faint); text-align:center;
  margin-top:6px;
}

/* min width chosen so all five layers sit in one row at max wrap width —
   the card row has to line up with the five columns of the diagram above */
.layers{
  display:grid; gap:16px;
  grid-template-columns:repeat(auto-fit, minmax(196px,1fr));
}
.layer{
  position:relative; overflow:hidden;
  padding:22px 20px 24px;
  border:1px solid var(--line); border-radius:var(--r);
  background:rgba(255,255,255,.022);
  transition:transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.layer:hover{
  transform:translateY(-4px);
  border-color:var(--accent-line);
  background:rgba(255,255,255,.045);
}
.layer--hi::after{
  content:""; position:absolute; left:0; top:0; bottom:0; width:2px;
  background:var(--accent); opacity:.4;
}
.layer__head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:12px; }
.layer__tag{
  font-family:var(--f-mono); font-size:9.5px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--faint);
}
.layer__n{
  font-family:var(--f-mono); font-size:10px; color:var(--accent);
  padding:2px 7px; border-radius:5px; background:var(--accent-soft);
  border:1px solid var(--accent-line);
}
.layer__title{ font-size:19px; margin-bottom:16px; letter-spacing:-.025em; }
.layer__chips{ display:flex; flex-wrap:wrap; gap:6px; }
.layer__chips span{
  padding:4px 10px; border-radius:7px;
  background:rgba(255,255,255,.045); border:1px solid rgba(255,255,255,.07);
  font-size:11.5px; color:var(--text-2);
  transition:background .18s, color .18s, border-color .18s;
}
.layer__chips span:hover{
  background:var(--accent-soft); border-color:var(--accent-line); color:var(--accent);
}

/* ── experience ─────────────────────────────────────────── */
.exp{ position:relative; padding-left:34px; }
.exp__rail{
  position:absolute; left:6px; top:8px; bottom:8px; width:1px;
  background:linear-gradient(180deg, var(--accent), rgba(255,255,255,.06));
}
.exp__node{
  position:absolute; left:-5.5px; top:0;
  width:12px; height:12px; border-radius:50%;
  background:var(--ink); border:2px solid var(--accent);
}
.exp__item{
  border:1px solid var(--line); border-radius:var(--r-lg);
  background:rgba(255,255,255,.022);
  padding:clamp(22px,3vw,34px);
}
.exp__top{ display:flex; flex-wrap:wrap; gap:10px 24px; justify-content:space-between; align-items:flex-start; margin-bottom:20px; }
.exp__role{ font-size:clamp(19px,2.4vw,25px); letter-spacing:-.03em; margin-bottom:4px; }
.exp__role span{ color:var(--faint); font-weight:400; }
.exp__org{
  margin:0; font-family:var(--f-mono); font-size:13px; color:var(--accent);
  letter-spacing:.06em;
}
.exp__when{
  margin:0; font-family:var(--f-mono); font-size:12px; color:var(--muted);
  padding:5px 12px; border:1px solid var(--line); border-radius:100px; background:var(--panel);
  white-space:nowrap;
}

.bullets li{
  position:relative; padding-left:22px; font-size:14.5px; color:var(--text-2);
  line-height:1.65;
}
.bullets li + li{ margin-top:11px; }
.bullets li::before{
  content:""; position:absolute; left:2px; top:10px;
  width:7px; height:1.5px; border-radius:2px; background:var(--accent); opacity:.7;
}
.bullets b{ color:var(--text); }

/* ── projects ───────────────────────────────────────────── */
.projects{ display:flex; flex-direction:column; gap:clamp(20px,3vw,34px); }

.proj{
  display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden;
  background:rgba(255,255,255,.022);
  transition:border-color .35s var(--ease), transform .35s var(--ease);
}
.proj:hover{ border-color:var(--accent-line); transform:translateY(-3px); }
.proj--rev{ direction:rtl; }
.proj--rev > *{ direction:ltr; }

.proj__viz{
  position:relative;
  display:flex; align-items:center; justify-content:center;
  padding:clamp(18px,2.4vw,30px);
  border-right:1px solid var(--line);
  background:rgba(255,255,255,.016);
}
.proj--rev .proj__viz{ border-right:0; border-left:1px solid var(--line); }

.proj__body{ padding:clamp(22px,2.8vw,34px); min-width:0; }
.proj__head{ display:flex; gap:14px; align-items:flex-start; margin-bottom:18px; }
.proj__idx{
  font-family:var(--f-mono); font-size:11px; color:var(--faint);
  padding-top:7px; flex:0 0 auto;
}
.proj__name{ font-size:clamp(22px,2.8vw,29px); letter-spacing:-.035em; margin-bottom:4px; }
.proj__sub{ margin:0; font-size:13.5px; color:var(--muted); }
.proj__link{
  margin-left:auto; flex:0 0 auto;
  width:38px; height:38px; border-radius:11px;
  display:grid; place-items:center;
  border:1px solid var(--line); background:var(--panel); color:var(--text-2);
  transition:all .22s var(--ease);
}
.proj__link svg{ width:17px; height:17px; }
.proj__link:hover{ color:var(--accent); border-color:var(--accent-line); background:var(--accent-soft); transform:translateY(-2px); }

.proj__stats{
  display:flex; flex-wrap:wrap; gap:8px 18px;
  padding:12px 0; margin-bottom:18px;
  border-block:1px solid var(--line);
  font-family:var(--f-mono); font-size:11px; color:var(--muted); letter-spacing:.02em;
}
.proj__stats b{ color:var(--accent); font-weight:500; }

/* the three cards are a curated selection, not the whole body of work */
.projects__more{
  margin:clamp(26px,3.4vw,40px) 0 0;
  text-align:center;
  font-family:var(--f-mono); font-size:12.5px; color:var(--muted);
}
.projects__more a{
  color:var(--accent);
  border-bottom:1px solid var(--accent-line);
  transition:border-color .2s var(--ease);
}
.projects__more a:hover{ border-bottom-color:var(--accent); }

/* ══════════ app mockups ══════════
   Framed recreations of each project's real interface. Chrome is DOM,
   the live region is a canvas. */
.app{
  width:100%; max-width:520px;
  border:1px solid var(--line-2); border-radius:12px;
  background:#000; overflow:hidden;
  box-shadow:0 30px 60px -40px rgba(0,0,0,1);
}
.app__bar{
  display:flex; align-items:center; gap:10px;
  padding:9px 12px;
  border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.035);
}
.app__dots{ display:flex; gap:5px; flex:0 0 auto; }
.app__dots i{ width:8px; height:8px; border-radius:50%; background:rgba(255,255,255,.16); }
.app__dots i:first-child{ background:rgba(255,255,255,.3); }
.app__url{
  flex:1; min-width:0;
  font-family:var(--f-mono); font-size:10px; color:var(--faint);
  text-align:center; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
.app__live{
  display:inline-flex; align-items:center; gap:5px; flex:0 0 auto;
  font-family:var(--f-mono); font-size:9px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--text-2);
}
.app__live i{
  width:5px; height:5px; border-radius:50%; background:var(--accent);
  animation:ping 2.4s ease-out infinite;
}
@keyframes ping{
  0%{ box-shadow:0 0 0 0 rgba(var(--accent-rgb),.4); }
  70%{ box-shadow:0 0 0 7px rgba(var(--accent-rgb),0); }
  100%{ box-shadow:0 0 0 0 rgba(var(--accent-rgb),0); }
}

/* the instrument grid lives here rather than on the canvas — the ECG sweep
   clears to transparent, so the grid survives underneath it */
.app__screen{
  position:relative; height:212px;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:24px 24px;
}
.app__screen canvas{ position:absolute; inset:0; width:100%; height:100%; }

/* readout rail under the screen */
.app__foot{
  display:flex; align-items:stretch;
  border-top:1px solid var(--line);
}
.app__cell{
  flex:1; min-width:0;
  padding:9px 12px;
  border-right:1px solid var(--line);
}
.app__cell:last-child{ border-right:0; }
.app__k{
  display:block;
  font-family:var(--f-mono); font-size:8.5px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--faint); margin-bottom:3px;
}
.app__v{
  display:block;
  font-family:var(--f-mono); font-size:12.5px; color:var(--text);
  font-variant-numeric:tabular-nums;
}
.app__v--alert{
  color:var(--ink); background:var(--accent);
  padding:0 6px; border-radius:4px; display:inline-block;
}

/* ── research ───────────────────────────────────────────── */
.paper{
  display:grid; grid-template-columns:minmax(0,1.35fr) minmax(0,.75fr);
  gap:clamp(28px,4vw,54px); align-items:center;
  border:1px solid var(--line); border-radius:var(--r-lg);
  background:rgba(255,255,255,.022);
  padding:clamp(24px,3.4vw,44px);
}
.paper__badges{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:20px; }
.badge{
  padding:4px 12px; border-radius:100px;
  border:1px solid var(--line); background:var(--panel);
  font-family:var(--f-mono); font-size:10.5px; letter-spacing:.06em;
  text-transform:uppercase; color:var(--muted);
}
.badge--ok{ color:var(--accent); border-color:var(--accent-line); background:var(--accent-soft); }
.paper__title{
  font-size:clamp(23px,3.2vw,36px); letter-spacing:-.035em; line-height:1.14;
  margin-bottom:18px; max-width:22ch;
}
.paper__abs{ font-size:15.5px; color:var(--text-2); max-width:60ch; margin-bottom:22px; }

.speedup{ margin-top:26px; display:flex; flex-direction:column; gap:10px; max-width:460px; }
.speedup__row{ display:flex; align-items:center; gap:12px; }
.speedup__k{
  flex:0 0 84px; font-family:var(--f-mono); font-size:11px; color:var(--muted);
  text-align:right;
}
.speedup__track{
  flex:1; height:9px; border-radius:6px; background:rgba(255,255,255,.05);
  overflow:hidden; border:1px solid var(--line);
}
.speedup__track i{
  display:block; height:100%; width:0;
  background:rgba(255,255,255,.18); border-radius:6px;
  transition:width 1.2s var(--ease);
}
.speedup.is-in .speedup__track i{ width:var(--w); }
.speedup__row--win .speedup__track i{ background:var(--accent); }
.speedup__v{
  flex:0 0 58px; font-family:var(--f-mono); font-size:11.5px; color:var(--text-2);
}
.speedup__row--win .speedup__v{ color:var(--accent); }

.fed{ display:flex; flex-direction:column; align-items:center; gap:14px; }
.fed svg{ width:100%; max-width:280px; height:auto; }
.fed__cap{
  margin:0; font-family:var(--f-mono); font-size:12px; color:var(--muted);
  text-align:center;
}
.fed__cap span{ color:var(--accent); }

/* ── contact ────────────────────────────────────────────── */
.section--contact{ padding-bottom:0; }
.cta{ text-align:center; padding:clamp(30px,5vw,60px) 0 clamp(60px,8vw,96px); }
.cta__eyebrow{
  font-family:var(--f-mono); font-size:11.5px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--accent); margin-bottom:20px;
}
.cta__head{
  font-size:clamp(32px,6.4vw,72px); font-weight:700; letter-spacing:-.045em;
  line-height:1.02; margin-bottom:38px;
}
.grad{ color:var(--accent); }
.cta__mail{
  display:inline-flex; align-items:center; gap:12px;
  font-family:var(--f-display); font-size:clamp(17px,2.6vw,27px); font-weight:500;
  letter-spacing:-.03em;
  padding:14px 30px; border-radius:100px;
  border:1px solid var(--line-2); background:var(--panel);
  transition:all .28s var(--ease); word-break:break-all;
}
.cta__mail svg{ width:19px; height:19px; flex:0 0 auto; transition:transform .28s var(--ease); }
.cta__mail:hover{
  border-color:var(--accent); color:var(--accent);
  background:var(--accent-soft); transform:translateY(-3px);
}
.cta__mail:hover svg{ transform:translateX(5px); }

.cta__links{
  display:flex; flex-wrap:wrap; justify-content:center; gap:10px 30px;
  margin-top:34px; font-family:var(--f-mono); font-size:12.5px;
}
.cta__links a{ color:var(--muted); transition:color .2s; }
.cta__links a:hover{ color:var(--accent); }

/* ── marquee ────────────────────────────────────────────── */
.marquee{
  overflow:hidden; border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.014);
  padding:16px 0; -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
}
.marquee__track{
  display:flex; gap:22px; width:max-content;
  font-family:var(--f-mono); font-size:13px; color:var(--faint);
  animation:slide 48s linear infinite;
  white-space:nowrap;
}
.marquee__track span:nth-child(odd){ color:var(--text-2); }
@keyframes slide{ from{ transform:translateX(0); } to{ transform:translateX(-50%); } }

/* ── footer ─────────────────────────────────────────────── */
.foot{
  position:relative; z-index:2;
  padding:44px 0 40px;
  border-top:1px solid var(--line);
}
.foot__inner{ display:flex; flex-direction:column; gap:30px; }
.foot__kicker{
  display:block;
  font-family:var(--f-mono); font-size:10px; letter-spacing:.2em;
  text-transform:uppercase; color:var(--accent); margin-bottom:14px;
}
.foot__links{ display:flex; flex-wrap:wrap; gap:10px 26px; }
.foot__links a{
  position:relative;
  font-family:var(--f-mono); font-size:13px; color:var(--text-2);
  transition:color .2s var(--ease);
}
.foot__links a::after{
  content:""; position:absolute; left:0; right:100%; bottom:-3px; height:1px;
  background:var(--accent); transition:right .3s var(--ease);
}
.foot__links a:hover{ color:var(--accent); }
.foot__links a:hover::after{ right:0; }
.foot__meta{
  display:flex; flex-wrap:wrap; gap:8px 20px; justify-content:space-between;
  padding-top:22px; border-top:1px solid var(--line);
  font-size:12.5px; color:var(--faint);
}
.foot__meta p{ margin:0; }
.foot__mono{ font-family:var(--f-mono); }

/* ══════════════════ MOTION ══════════════════ */
[data-reveal]{
  opacity:0; transform:translateY(26px);
  transition:opacity .8s var(--ease), transform .8s var(--ease);
}
[data-reveal].is-in{ opacity:1; transform:none; }

[data-anim]{
  opacity:0; transform:translateY(22px);
  animation:rise .9s var(--ease) forwards;
}
[data-anim="1"]{ animation-delay:.10s } [data-anim="2"]{ animation-delay:.20s }
[data-anim="3"]{ animation-delay:.32s } [data-anim="4"]{ animation-delay:.44s }
[data-anim="5"]{ animation-delay:.56s } [data-anim="6"]{ animation-delay:.68s }
@keyframes rise{ to{ opacity:1; transform:none; } }

/* ══════════════════ RESPONSIVE ══════════════════ */
@media (max-width:1080px){
  .about{ grid-template-columns:1fr; }
  .paper{ grid-template-columns:1fr; }
  .paper__right{ order:-1; }
  .fed svg{ max-width:230px; }
}

@media (max-width:900px){
  .proj, .proj--rev{ grid-template-columns:1fr; direction:ltr; }
  .proj__viz{ border-right:0 !important; border-left:0 !important; border-bottom:1px solid var(--line); }
  .netviz svg{ height:130px; }
}

/* the dock would collide with content on short viewports */
@media (max-height:760px){
  .dock{ bottom:90px; }
}

@media (max-width:640px){
  body{ font-size:15px; }
  .hero{ padding-top:110px; min-height:88svh; }
  .hero__name{ font-size:clamp(48px,17vw,80px); }
  .btn{ --bh:44px; }
  .hero__actions{ width:100%; flex-direction:column; }
  .hero__actions .btn{ width:100%; }
  .shead{ flex-wrap:wrap; gap:10px 14px; }
  .shead__note{ display:none; }
  .exp{ padding-left:20px; }
  .netviz{ display:none; }
  .speedup__k{ flex-basis:66px; }
  .cta__mail{ font-size:15px; padding:12px 20px; }
  .dock{ bottom:26px; padding:6px; gap:2px; }
  .dock__item{ height:40px; padding:0 13px; font-size:12.5px; gap:7px; }
  .dock__item svg{ width:15px; height:15px; }
  .foot__meta{ flex-direction:column; }
}

/* the dock labels cost too much width on the narrowest phones */
@media (max-width:420px){
  .dock__item{ padding:0 11px; }
  .dock__label{ display:none; }
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.01ms !important; animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  [data-reveal],[data-anim]{ opacity:1 !important; transform:none !important; }
  .marquee__track{ animation:none; }
  .dock{ opacity:1 !important; pointer-events:auto !important; transform:translateX(-50%) !important; }
}

@media print{
  .nav,.dock,.scroll-rail,.hero__net,.marquee,.proj__viz{ display:none !important; }
  body{ background:#fff; color:#000; }
  .section{ padding:24px 0; }
}