/* =============================================================================
   Ritesh Zambre — riteshzambre.com
   Design tokens → base → components → responsive
   ========================================================================== */

:root{
  /* surfaces */
  --ink:#080A0F;
  --ink-alt:#0B0E15;
  --panel:#0E131B;
  --raised:#141A25;
  --line:rgba(255,255,255,.075);
  --line-2:rgba(255,255,255,.145);

  /* text */
  --text:#E7EAF0;
  --text-2:#A8B0C0;
  --muted:#737D91;

  /* semantic layer hues — each maps to a layer of the system, not decoration */
  --iris:#7C83FF;     /* intelligence / generative */
  --teal:#4FB8A2;     /* retrieval / orchestration */
  --amber:#F2B45C;    /* signals, metrics, live state */
  --steel:#7FA6C9;    /* data */
  --slate:#99A3B8;    /* infrastructure */

  --iris-dim:rgba(124,131,255,.13);
  --teal-dim:rgba(79,184,162,.13);
  --amber-dim:rgba(242,180,92,.13);
  --steel-dim:rgba(127,166,201,.13);
  --slate-dim:rgba(153,163,184,.13);

  /* type */
  --sans:"Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  /* metrics */
  --wrap:1160px;
  --pad:clamp(20px,5vw,48px);
  --r:14px;
  --r-sm:9px;
  --nav-h:64px;

  --shadow:0 1px 0 rgba(255,255,255,.03) inset, 0 18px 44px -24px rgba(0,0,0,.9);
  --ease:cubic-bezier(.22,.61,.36,1);
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--nav-h) + 16px);
}

body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* faint field of light behind the page — no gradient banding, no colour wash */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 520px at 78% -10%, rgba(124,131,255,.10), transparent 65%),
    radial-gradient(700px 460px at 4% 8%, rgba(79,184,162,.06), transparent 62%);
}

img,svg{max-width:100%;display:block}
button,input,textarea,select{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}

::selection{background:rgba(124,131,255,.28)}

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

.skip{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--iris);color:#0A0A12;padding:10px 16px;border-radius:0 0 8px 0;font-weight:600;
}
.skip:focus{left:0}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad);position:relative;z-index:1}

/* ------------------------------------------------------------- typography */
.h1{
  font-size:clamp(2.35rem,6.2vw,4.15rem);
  line-height:1.02;
  letter-spacing:-.035em;
  font-weight:600;
  margin:0 0 22px;
  text-wrap:balance;
}
.h1 .hl{
  color:var(--iris);
  position:relative;
  white-space:nowrap;
}
.h2{
  font-size:clamp(1.72rem,3.5vw,2.5rem);
  line-height:1.1;
  letter-spacing:-.028em;
  font-weight:600;
  margin:0 0 10px;
  text-wrap:balance;
}
.h3{font-size:1.08rem;font-weight:600;letter-spacing:-.012em;margin:0}

.lede{
  font-size:clamp(1rem,1.5vw,1.14rem);
  color:var(--text-2);
  max-width:56ch;
  margin:0 0 30px;
}

.eyebrow{
  font-family:var(--mono);
  font-size:.7rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  display:flex;align-items:center;gap:12px;
  margin:0 0 16px;
}
.eyebrow .idx{
  color:var(--iris);
  padding-right:12px;
  border-right:1px solid var(--line-2);
}

.sec-sub{
  color:var(--text-2);
  max-width:62ch;
  margin:12px 0 0;
  font-size:.98rem;
}

/* ---------------------------------------------------------------- buttons */
.btn{
  --btn-bg:transparent;--btn-fg:var(--text);--btn-bd:var(--line-2);
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:11px 20px;
  border-radius:999px;
  border:1px solid var(--btn-bd);
  background:var(--btn-bg);
  color:var(--btn-fg);
  font-size:.92rem;font-weight:600;letter-spacing:-.01em;
  cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{--btn-bg:var(--iris);--btn-fg:#0A0B16;--btn-bd:var(--iris)}
.btn-primary:hover{--btn-bg:#8F95FF;--btn-bd:#8F95FF}
.btn-ghost{--btn-bg:rgba(255,255,255,.03)}
.btn-ghost:hover{--btn-bg:rgba(255,255,255,.07);--btn-bd:rgba(255,255,255,.24)}
.btn-quiet{--btn-bd:transparent;--btn-fg:var(--text-2)}
.btn-quiet:hover{--btn-fg:var(--text);--btn-bd:var(--line-2)}
.btn-sm{padding:7px 15px;font-size:.83rem}
.btn-lg{padding:14px 26px;font-size:1rem}
.btn-block{width:100%}
.btn-ico{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* -------------------------------------------------------------------- nav */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--nav-h);
  background:rgba(8,10,15,.72);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.nav.is-stuck{border-bottom-color:var(--line);background:rgba(8,10,15,.9)}

.nav-inner{
  max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad);
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}

.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{display:flex;flex-direction:column;gap:3px;padding-top:2px}
.brand-mark i{display:block;height:2px;border-radius:2px;background:var(--iris)}
.brand-mark i:nth-child(1){width:16px}
.brand-mark i:nth-child(2){width:10px;background:var(--teal)}
.brand-mark i:nth-child(3){width:13px;background:var(--amber)}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font-weight:600;font-size:.94rem;letter-spacing:-.015em}
.brand-text em{
  font-style:normal;font-family:var(--mono);font-size:.62rem;font-weight:400;
  letter-spacing:.13em;text-transform:uppercase;color:var(--muted);
}

.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{
  padding:7px 11px;border-radius:8px;
  font-size:.86rem;color:var(--text-2);
  transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.is-active{color:var(--text)}
.nav-links a.is-active::after{
  content:"";display:block;height:1px;margin-top:3px;background:var(--iris);
}

.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}

.nav-progress{
  position:absolute;bottom:-1px;left:0;height:1.5px;width:0;
  background:linear-gradient(90deg,var(--teal),var(--iris));
}

.burger{
  display:none;width:40px;height:40px;border:1px solid var(--line-2);border-radius:10px;
  background:rgba(255,255,255,.03);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger span{display:block;width:16px;height:1.5px;background:var(--text);border-radius:2px;transition:transform .25s var(--ease),opacity .2s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(3.25px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){transform:translateY(-3.25px) rotate(-45deg)}

/* mobile sheet */
.sheet{
  position:fixed;inset:var(--nav-h) 0 0;z-index:79;
  background:rgba(8,10,15,.97);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  display:flex;flex-direction:column;justify-content:space-between;
  padding:22px var(--pad) calc(28px + env(safe-area-inset-bottom));
  overflow-y:auto;
  animation:sheetIn .22s var(--ease);
}
.sheet[hidden]{display:none}
@keyframes sheetIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.sheet-links{display:flex;flex-direction:column}
.sheet-links a{
  padding:16px 2px;border-bottom:1px solid var(--line);
  font-size:1.2rem;font-weight:500;letter-spacing:-.02em;
  display:flex;align-items:baseline;gap:14px;
}
.sheet-links a span{font-family:var(--mono);font-size:.68rem;color:var(--iris)}
.sheet-foot{padding-top:26px}
.sheet-social{display:flex;gap:18px;justify-content:center;margin-top:18px;font-family:var(--mono);font-size:.78rem;color:var(--muted)}
.sheet-social a:hover{color:var(--text)}

/* ------------------------------------------------------------------- hero */
.hero{padding:calc(var(--nav-h) + 68px) 0 84px;position:relative}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,540px);
  gap:clamp(32px,5vw,64px);align-items:center;
}

.status{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--text-2);
  border:1px solid var(--line-2);border-radius:999px;
  padding:6px 14px 6px 11px;margin:0 0 26px;
  background:rgba(255,255,255,.02);
}
.status .dot{
  width:6px;height:6px;border-radius:50%;background:var(--amber);
  box-shadow:0 0 0 0 rgba(242,180,92,.55);
  animation:pulse 2.6s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(242,180,92,.5)}
  70%{box-shadow:0 0 0 8px rgba(242,180,92,0)}
  100%{box-shadow:0 0 0 0 rgba(242,180,92,0)}
}

.hero-cta{display:flex;flex-wrap:wrap;gap:11px;margin-bottom:30px}

.hero-meta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;font-size:.86rem;color:var(--muted)}
.icon-link{display:inline-flex;align-items:center;gap:8px;transition:color .16s var(--ease)}
.icon-link svg{width:17px;height:17px;fill:currentColor}
.icon-link:hover{color:var(--text)}
.hero-loc{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;
  padding-left:20px;border-left:1px solid var(--line);
}

/* ------------------------------------------- signature: the trace console */
.console{
  background:linear-gradient(180deg,rgba(20,26,37,.9),rgba(14,19,27,.9));
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  overflow:hidden;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.console-bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.015);
}
.console-title{font-family:var(--mono);font-size:.76rem;color:var(--text-2);display:flex;align-items:center;gap:8px}
.console-title b{color:var(--text);font-weight:500}
.console-title .sep{color:var(--muted)}
.console-title .pip{width:7px;height:7px;border-radius:50%;background:var(--teal);animation:pulse 2.6s ease-out infinite}
.console-note{
  font-family:var(--mono);font-size:.63rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
  border:1px solid var(--line);border-radius:5px;padding:2px 7px;
}

.console-flow{
  display:flex;align-items:center;gap:0;
  padding:18px 16px 16px;
  overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;
}
.console-flow::-webkit-scrollbar{display:none}
.node{
  scroll-snap-align:center;
  flex:0 0 auto;
  display:flex;flex-direction:column;align-items:center;gap:7px;
  padding:8px 9px;border-radius:9px;border:1px solid transparent;
  background:none;cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.node:hover{background:rgba(255,255,255,.04)}
.node .glyph{
  width:11px;height:11px;border-radius:3px;
  border:1.5px solid var(--tone,var(--iris));
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.node .lbl{font-family:var(--mono);font-size:.63rem;color:var(--muted);letter-spacing:.02em;white-space:nowrap}
.node.is-on{border-color:var(--line-2);background:rgba(255,255,255,.05)}
.node.is-on .lbl{color:var(--text)}
.node.is-on .glyph,.node.is-live .glyph{background:var(--tone,var(--iris));box-shadow:0 0 12px -2px var(--tone,var(--iris))}
.link{
  flex:1 1 14px;min-width:14px;height:1px;background:var(--line-2);position:relative;margin-bottom:20px;
}
.link::after{
  content:"";position:absolute;top:-1.5px;left:0;width:4px;height:4px;border-radius:50%;
  background:var(--iris);opacity:0;
}
.link.is-flowing::after{animation:travel 1.05s var(--ease) forwards}
@keyframes travel{0%{opacity:1;left:0}100%{opacity:0;left:100%}}

.console-detail{
  padding:0 16px 14px;font-size:.84rem;color:var(--text-2);min-height:62px;
  border-bottom:1px solid var(--line);
}
.console-detail b{color:var(--text);font-family:var(--mono);font-size:.78rem;font-weight:500;display:block;margin-bottom:4px}

.console-fall{padding:14px 16px 6px;display:flex;flex-direction:column;gap:7px}
.fall-row{display:grid;grid-template-columns:112px 1fr 52px;align-items:center;gap:10px;cursor:pointer}
.fall-row .fk{font-family:var(--mono);font-size:.7rem;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:color .16s}
.fall-row .ft{height:7px;border-radius:3px;background:rgba(255,255,255,.045);position:relative;overflow:hidden}
.fall-row .fb{
  position:absolute;top:0;height:100%;border-radius:3px;background:var(--tone,var(--iris));opacity:.82;
  transform:scaleX(0);transform-origin:left;
}
.fall-row .fv{font-family:var(--mono);font-size:.7rem;color:var(--text-2);text-align:right}
.fall-row:hover .fk,.fall-row.is-on .fk{color:var(--text)}
.console.is-ready .fb{animation:grow .55s var(--ease) forwards;animation-delay:var(--d,0s)}
@keyframes grow{to{transform:scaleX(1)}}

.console-foot{
  display:flex;flex-wrap:wrap;gap:6px 18px;padding:12px 16px 14px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:.7rem;color:var(--muted);
}
.console-foot b{color:var(--teal);font-weight:500}

/* --------------------------------------------------------------- sections */
.sec{padding:clamp(64px,9vw,110px) 0;position:relative}
.sec-alt{background:var(--ink-alt);border-block:1px solid var(--line)}
.sec-head{margin-bottom:clamp(34px,5vw,54px);max-width:760px}
.sec-cta{margin-top:30px;display:flex;justify-content:center}

/* ------------------------------------------------------------------ about */
.about-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:clamp(30px,5vw,64px)}
.about-lead{
  font-size:clamp(1.08rem,2vw,1.32rem);line-height:1.5;letter-spacing:-.018em;
  color:var(--text);margin:0 0 22px;text-wrap:pretty;
}
.about-text p{color:var(--text-2);margin:0 0 16px}

.now{margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
.now-h{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.15em;text-transform:uppercase;
  color:var(--muted);margin:0 0 12px;
}
.now-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.now-list li{
  position:relative;padding-left:20px;font-size:.92rem;color:var(--text-2);
}
.now-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:1px;background:var(--teal);
}

.metrics{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:12px;align-content:start}
.metric{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:20px 18px;transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.metric:hover{border-color:var(--line-2);transform:translateY(-2px)}
.metric .mv{
  font-size:clamp(1.9rem,4vw,2.5rem);font-weight:600;letter-spacing:-.04em;line-height:1;
  color:var(--amber);display:block;margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.metric .ml{font-size:.9rem;font-weight:500;line-height:1.35;display:block;margin-bottom:5px}
.metric .mn{font-family:var(--mono);font-size:.68rem;color:var(--muted);line-height:1.4;display:block}

/* ------------------------------------------------------------- experience */
.timeline{position:relative;display:flex;flex-direction:column;gap:16px}

.job{
  position:relative;
  border:1px solid var(--line);border-radius:var(--r);
  background:var(--panel);
  padding:clamp(20px,3vw,30px);
  transition:border-color .2s var(--ease);
}
.job:hover{border-color:var(--line-2)}
.job::before{
  content:"";position:absolute;left:-1px;top:26px;width:2px;height:34px;border-radius:2px;
  background:var(--slate);
}
.job.is-current::before{background:var(--amber);box-shadow:0 0 14px -2px var(--amber)}

.job-head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px 20px;
  margin-bottom:6px;
}
.job-co{font-size:1.28rem;font-weight:600;letter-spacing:-.026em;margin:0}
.job-when{font-family:var(--mono);font-size:.74rem;color:var(--muted);letter-spacing:.03em;white-space:nowrap}
.job-role{font-size:.94rem;color:var(--iris);margin:0 0 14px;font-weight:500}
.job-sum{color:var(--text-2);font-size:.95rem;margin:0 0 22px;max-width:74ch}

.cases{display:flex;flex-direction:column;gap:14px}
.case{
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(255,255,255,.016);
  padding:16px 18px;
}
.case-row{display:grid;grid-template-columns:82px 1fr;gap:14px;padding:7px 0;align-items:baseline}
.case-row + .case-row{border-top:1px solid var(--line)}
.case-k{
  font-family:var(--mono);font-size:.63rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);padding-top:2px;
}
.case-v{font-size:.92rem;color:var(--text-2);margin:0}
.case-row.is-impact .case-k{color:var(--amber)}
.case-row.is-impact .case-v{color:var(--text)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{
  font-family:var(--mono);font-size:.7rem;color:var(--text-2);
  border:1px solid var(--line-2);border-radius:5px;padding:2px 8px;
  background:rgba(255,255,255,.02);
}

.extras{list-style:none;margin:18px 0 0;padding:18px 0 0;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:9px}
.extras li{position:relative;padding-left:20px;font-size:.9rem;color:var(--text-2)}
.extras li::before{content:"+";position:absolute;left:0;color:var(--muted);font-family:var(--mono);font-size:.8rem}

/* ----------------------------------------------------------------- skills */
.skills{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:14px}
.skill-group{
  border:1px solid var(--line);border-radius:var(--r);background:var(--panel);
  padding:22px;transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.skill-group:hover{border-color:var(--line-2);transform:translateY(-2px)}
.skill-head{display:flex;align-items:center;gap:9px;margin-bottom:5px}
.skill-head .bead{width:8px;height:8px;border-radius:2px;background:var(--tone,var(--iris))}
.skill-head h3{font-size:1.02rem;font-weight:600;letter-spacing:-.018em;margin:0}
.skill-blurb{font-size:.84rem;color:var(--muted);margin:0 0 16px}
.skill-items{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0}
.skill-items li{
  font-family:var(--mono);font-size:.73rem;color:var(--text-2);
  border:1px solid var(--line);border-radius:6px;padding:4px 9px;
  background:rgba(255,255,255,.02);
  transition:border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease),transform .16s var(--ease);
  cursor:default;
}
.skill-items li:hover{
  color:var(--text);border-color:var(--tone,var(--iris));
  background:var(--tone-dim,var(--iris-dim));transform:translateY(-1px);
}

/* --------------------------------------------------------------- projects */
.projects{display:flex;flex-direction:column;gap:16px}
.proj{
  border:1px solid var(--line);border-radius:var(--r);background:var(--panel);
  overflow:hidden;transition:border-color .2s var(--ease);
}
.proj:hover{border-color:var(--line-2)}
.proj.is-open{border-color:var(--line-2)}

.proj-top{
  width:100%;text-align:left;background:none;border:0;cursor:pointer;
  padding:clamp(20px,3vw,28px);
  display:grid;grid-template-columns:1fr auto;gap:20px;align-items:start;
}
.proj-tag{
  font-family:var(--mono);font-size:.64rem;letter-spacing:.15em;text-transform:uppercase;
  color:var(--tone,var(--iris));display:flex;align-items:center;gap:8px;margin-bottom:10px;
}
.proj-tag::before{content:"";width:16px;height:1px;background:currentColor}
.proj-name{font-size:clamp(1.2rem,2.4vw,1.62rem);font-weight:600;letter-spacing:-.028em;margin:0 0 8px}
.proj-line{color:var(--text-2);font-size:.95rem;margin:0;max-width:64ch}
.proj-toggle{
  width:38px;height:38px;border:1px solid var(--line-2);border-radius:50%;
  display:grid;place-items:center;flex-shrink:0;
  transition:transform .28s var(--ease),background .2s var(--ease),border-color .2s;
}
.proj-toggle svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.proj:hover .proj-toggle{background:rgba(255,255,255,.05)}
.proj.is-open .proj-toggle{transform:rotate(45deg);border-color:var(--tone,var(--iris));color:var(--tone,var(--iris))}

/* pipeline strip */
.flowline{
  display:flex;align-items:center;gap:8px;padding:0 clamp(20px,3vw,28px) clamp(20px,3vw,28px);
  overflow-x:auto;scrollbar-width:none;
}
.flowline::-webkit-scrollbar{display:none}
.flowline .fnode{
  flex:0 0 auto;font-family:var(--mono);font-size:.7rem;color:var(--text-2);
  border:1px solid var(--line);border-radius:6px;padding:5px 10px;
  background:rgba(255,255,255,.02);white-space:nowrap;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.flowline .fnode:hover{border-color:var(--tone,var(--iris));color:var(--text)}
.flowline .farrow{flex:0 0 auto;color:var(--muted);font-size:.72rem}

.proj-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s var(--ease)}
.proj.is-open .proj-body{grid-template-rows:1fr}
.proj-body > div{overflow:hidden}
.proj-inner{
  padding:clamp(20px,3vw,28px);border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:26px;
}
.pblock h4{
  font-family:var(--mono);font-size:.64rem;letter-spacing:.15em;text-transform:uppercase;
  color:var(--muted);margin:0 0 10px;font-weight:500;
}
.pblock p{font-size:.92rem;color:var(--text-2);margin:0}
.pblock ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.pblock li{position:relative;padding-left:18px;font-size:.9rem;color:var(--text-2)}
.pblock li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;border:1px solid var(--tone,var(--iris))}
.pblock.is-results li::before{background:var(--tone,var(--iris))}
.proj-links{
  grid-column:1/-1;display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding-top:6px;
}
.proj-links .note{font-family:var(--mono);font-size:.7rem;color:var(--muted)}

/* ----------------------------------------------------------- architecture */
.stack{display:flex;flex-direction:column;gap:10px}
.layer{
  border:1px solid var(--line);border-radius:var(--r);background:var(--panel);
  padding:20px clamp(18px,3vw,26px);
  display:grid;grid-template-columns:190px 1fr;gap:24px;align-items:start;
  position:relative;
}
.layer::after{
  content:"";position:absolute;left:50%;bottom:-10px;width:1px;height:10px;background:var(--line-2);
}
.layer:last-child::after{display:none}
.layer-id{display:flex;flex-direction:column;gap:6px}
.layer-name{display:flex;align-items:center;gap:10px;font-size:1.06rem;font-weight:600;letter-spacing:-.02em}
.layer-name .bead{width:9px;height:9px;border-radius:2px;background:var(--tone,var(--iris))}
.layer-note{font-size:.82rem;color:var(--muted);margin:0}
.layer-items{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px;list-style:none;margin:0;padding:0}
.acomp{
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(255,255,255,.02);
  padding:11px 13px;cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.acomp:hover,.acomp.is-on{border-color:var(--tone,var(--iris));background:var(--tone-dim,var(--iris-dim))}
.acomp .an{font-family:var(--mono);font-size:.75rem;color:var(--text);display:block}
.acomp .ad{
  font-size:.82rem;color:var(--text-2);line-height:1.45;
  display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease),margin .3s var(--ease);
  margin-top:0;
}
.acomp .ad > span{overflow:hidden}
.acomp:hover .ad,.acomp.is-on .ad{grid-template-rows:1fr;margin-top:7px}

/* --------------------------------------------------------------- approach */
.principles{
  list-style:none;margin:0;padding:0;counter-reset:p;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
}
.principle{counter-increment:p;background:var(--ink-alt);padding:26px 24px;transition:background .2s var(--ease)}
.principle:hover{background:var(--panel)}
.principle::before{
  content:counter(p,decimal-leading-zero);
  font-family:var(--mono);font-size:.72rem;color:var(--iris);display:block;margin-bottom:14px;letter-spacing:.1em;
}
.principle h3{font-size:1.06rem;font-weight:600;letter-spacing:-.02em;margin:0 0 9px}
.principle p{font-size:.9rem;color:var(--text-2);margin:0}

/* ------------------------------------------------------------- playground */
.play{border:1px solid var(--line);border-radius:var(--r);background:var(--panel);overflow:hidden}
.play-tabs{display:flex;border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none}
.play-tabs::-webkit-scrollbar{display:none}
.play-tab{
  flex:1 0 auto;background:none;border:0;border-bottom:2px solid transparent;
  padding:15px 22px;cursor:pointer;color:var(--muted);
  font-family:var(--mono);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.play-tab:hover{color:var(--text-2);background:rgba(255,255,255,.02)}
.play-tab.is-on{color:var(--text);border-bottom-color:var(--iris);background:rgba(124,131,255,.05)}
.play-panel{padding:clamp(18px,3vw,28px)}
.play-panel[hidden]{display:none}

.demo-h{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;margin-bottom:16px}
.demo-note{font-size:.85rem;color:var(--muted);margin:0 0 18px;max-width:70ch}
.sim{
  font-family:var(--mono);font-size:.6rem;letter-spacing:.15em;text-transform:uppercase;
  color:var(--amber);border:1px solid rgba(242,180,92,.35);border-radius:5px;padding:2px 7px;
}

.qpick{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.qbtn{
  text-align:left;background:rgba(255,255,255,.02);border:1px solid var(--line);
  border-radius:var(--r-sm);padding:12px 15px;cursor:pointer;font-size:.92rem;color:var(--text-2);
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.qbtn:hover{border-color:var(--line-2);color:var(--text)}
.qbtn.is-on{border-color:var(--teal);color:var(--text);background:var(--teal-dim)}

.stage{margin-top:20px;border-top:1px solid var(--line);padding-top:18px}
.stage-h{
  font-family:var(--mono);font-size:.64rem;letter-spacing:.15em;text-transform:uppercase;
  color:var(--muted);margin:0 0 12px;display:flex;align-items:center;gap:10px;
}
.stage-h .count{color:var(--teal)}

.chunk{
  border:1px solid var(--line);border-radius:var(--r-sm);padding:12px 14px;margin-bottom:8px;
  background:rgba(255,255,255,.015);
  transition:opacity .3s var(--ease),border-color .3s var(--ease);
}
.chunk.is-dropped{opacity:.4}
.chunk-h{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:baseline;justify-content:space-between;margin-bottom:6px}
.chunk-src{font-family:var(--mono);font-size:.72rem;color:var(--text)}
.chunk-pg{font-family:var(--mono);font-size:.68rem;color:var(--muted)}
.chunk-sc{font-family:var(--mono);font-size:.68rem;color:var(--teal);display:flex;align-items:center;gap:7px}
.chunk-sc .bar{width:54px;height:4px;border-radius:2px;background:rgba(255,255,255,.07);overflow:hidden}
.chunk-sc .bar i{display:block;height:100%;background:var(--teal);border-radius:2px}
.chunk-tx{font-size:.87rem;color:var(--text-2);margin:0}
.chunk-flag{font-family:var(--mono);font-size:.63rem;color:var(--muted);margin-top:6px;display:block}

.answer{
  border:1px solid var(--line-2);border-radius:var(--r-sm);padding:16px;
  background:rgba(124,131,255,.05);
}
.answer p{margin:0;font-size:.95rem;line-height:1.62}
.answer sup{
  font-family:var(--mono);font-size:.62rem;color:var(--iris);
  border:1px solid rgba(124,131,255,.4);border-radius:3px;padding:0 3px;margin-left:2px;vertical-align:super;
}
.cites{list-style:none;margin:14px 0 0;padding:14px 0 0;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:5px}
.cites li{font-family:var(--mono);font-size:.7rem;color:var(--muted)}
.cites li b{color:var(--iris);font-weight:500}

.evals{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.eval{border:1px solid var(--line);border-radius:6px;padding:7px 11px;background:rgba(255,255,255,.02)}
.eval .ek{font-family:var(--mono);font-size:.63rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);display:block}
.eval .ev{font-family:var(--mono);font-size:.94rem;color:var(--amber);font-variant-numeric:tabular-nums}

/* agent demo */
.agent-req{
  border:1px solid var(--line);border-left:2px solid var(--iris);border-radius:var(--r-sm);
  padding:13px 15px;font-size:.94rem;color:var(--text);background:rgba(255,255,255,.02);margin-bottom:18px;
}
.agent-req span{font-family:var(--mono);font-size:.63rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:5px}
.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.step{
  display:grid;grid-template-columns:96px 1fr;gap:16px;padding:14px 0;
  border-top:1px solid var(--line);
  opacity:.22;transform:translateY(4px);
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
.step.is-shown{opacity:1;transform:none}
.step-who{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.72rem;color:var(--tone,var(--iris))}
.step-who i{width:7px;height:7px;border-radius:50%;background:currentColor;flex-shrink:0}
.step-act{font-family:var(--mono);font-size:.83rem;color:var(--text);margin:0 0 4px}
.step-det{font-size:.88rem;color:var(--text-2);margin:0}
.demo-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;align-items:center}

/* ml demo */
.ml-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,300px);gap:28px}
.sliders{display:flex;flex-direction:column;gap:16px}
.slider label{display:flex;justify-content:space-between;align-items:baseline;font-size:.88rem;margin-bottom:7px}
.slider label b{font-family:var(--mono);font-size:.82rem;color:var(--text);font-weight:500;font-variant-numeric:tabular-nums}
.slider input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:3px;border-radius:2px;
  background:rgba(255,255,255,.11);cursor:pointer;
}
.slider input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:17px;height:17px;border-radius:50%;
  background:var(--iris);border:3px solid var(--ink);box-shadow:0 0 0 1px var(--iris);
}
.slider input[type=range]::-moz-range-thumb{
  width:15px;height:15px;border-radius:50%;background:var(--iris);border:3px solid var(--ink);box-shadow:0 0 0 1px var(--iris);
}
.readout{
  border:1px solid var(--line);border-radius:var(--r-sm);padding:20px;background:rgba(255,255,255,.02);
  display:flex;flex-direction:column;gap:6px;
}
.readout .rk{font-family:var(--mono);font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.readout .rv{font-size:2.6rem;font-weight:600;letter-spacing:-.04em;line-height:1;font-variant-numeric:tabular-nums;transition:color .3s}
.readout .rband{font-family:var(--mono);font-size:.76rem;margin-top:2px}
.gauge{height:6px;border-radius:3px;background:rgba(255,255,255,.07);overflow:hidden;margin:12px 0 4px}
.gauge i{display:block;height:100%;border-radius:3px;transition:width .3s var(--ease),background .3s}
.shap{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:9px}
.shap-row{display:grid;grid-template-columns:1fr 108px;gap:10px;align-items:center;font-size:.82rem}
.shap-row .sk{color:var(--text-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.shap-bar{height:16px;position:relative;background:rgba(255,255,255,.04);border-radius:3px}
.shap-bar::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:var(--line-2)}
.shap-bar i{position:absolute;top:3px;height:10px;border-radius:2px;transition:width .3s var(--ease),left .3s var(--ease)}

/* ------------------------------------------------------------------ repos */
.repos{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:12px}
.repo{
  border:1px solid var(--line);border-radius:var(--r);background:var(--panel);padding:20px;
  display:flex;flex-direction:column;gap:9px;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.repo:hover{border-color:var(--line-2);transform:translateY(-2px)}
.repo-n{font-family:var(--mono);font-size:.9rem;color:var(--text);word-break:break-word}
.repo-d{font-size:.87rem;color:var(--text-2);margin:0;flex:1}
.repo-m{display:flex;flex-wrap:wrap;gap:14px;font-family:var(--mono);font-size:.7rem;color:var(--muted);align-items:center}
.repo-m .lang{display:inline-flex;align-items:center;gap:6px}
.repo-m .lang i{width:8px;height:8px;border-radius:50%;background:var(--teal)}
.repos-msg{
  grid-column:1/-1;border:1px dashed var(--line-2);border-radius:var(--r);
  padding:28px;text-align:center;color:var(--muted);font-family:var(--mono);font-size:.8rem;
}

/* ------------------------------------------------------------------ certs */
.certs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}
.cert{
  border:1px solid var(--line);border-radius:var(--r);background:var(--panel);padding:20px;
  display:flex;flex-direction:column;gap:7px;transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.cert:hover{border-color:var(--line-2);transform:translateY(-2px)}
.cert-kind{font-family:var(--mono);font-size:.62rem;letter-spacing:.15em;text-transform:uppercase;color:var(--iris)}
.cert-t{font-size:1rem;font-weight:600;letter-spacing:-.018em;line-height:1.32}
.cert-m{font-family:var(--mono);font-size:.72rem;color:var(--muted)}

/* ----------------------------------------------------------------- resume */
.sec-resume{padding-block:clamp(46px,6vw,70px)}
.resume-card{
  border:1px solid var(--line-2);border-radius:var(--r);
  background:linear-gradient(120deg,rgba(124,131,255,.09),rgba(79,184,162,.05));
  padding:clamp(26px,4vw,42px);
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.resume-card .h2{margin-bottom:0}
.resume-card .sec-sub{max-width:52ch}

/* ---------------------------------------------------------------- contact */
.contact-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(26px,5vw,54px);align-items:start}
.contact-rail{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.rail-item{
  display:flex;flex-direction:column;gap:3px;padding:16px 0;border-bottom:1px solid var(--line);
  transition:padding-left .2s var(--ease);
}
a.rail-item:hover{padding-left:8px}
.rail-k{font-family:var(--mono);font-size:.64rem;letter-spacing:.15em;text-transform:uppercase;color:var(--muted)}
.rail-v{font-size:.98rem;color:var(--text);word-break:break-word}
a.rail-item:hover .rail-v{color:var(--iris)}

.form{display:flex;flex-direction:column;gap:15px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.field input,.field textarea{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:12px 14px;font-size:.95rem;color:var(--text);
  transition:border-color .18s var(--ease),background .18s var(--ease);
  width:100%;resize:vertical;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--iris);background:var(--raised)}
.field input:user-invalid,.field textarea:user-invalid{border-color:#E0705F}
.form-note{font-family:var(--mono);font-size:.74rem;color:var(--muted);margin:0;min-height:1.2em}
.form-note.is-ok{color:var(--teal)}
.form-note.is-err{color:#E0705F}

/* ----------------------------------------------------------------- footer */
.foot{border-top:1px solid var(--line);padding:42px 0;background:var(--ink-alt)}
.foot-inner{display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between}
.foot-name{font-weight:600;letter-spacing:-.02em;margin:0 0 3px}
.foot-line{color:var(--muted);font-size:.88rem;margin:0}
.foot-links{display:flex;flex-wrap:wrap;gap:20px;font-family:var(--mono);font-size:.76rem;color:var(--text-2)}
.foot-links a{transition:color .16s var(--ease)}
.foot-links a:hover{color:var(--iris)}
.foot-copy{font-family:var(--mono);font-size:.72rem;color:var(--muted);margin:0}

/* --------------------------------------------------------------- reveal */
.reveal{opacity:0;transform:translateY(14px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease)}

/* ============================== RESPONSIVE ============================== */

@media (max-width:1040px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .console{max-width:620px}
  .about-grid{grid-template-columns:1fr;gap:36px}
  .metrics{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
  .layer{grid-template-columns:1fr;gap:16px}
  .layer::after{left:24px}
  .contact-grid{grid-template-columns:1fr}
  .ml-grid{grid-template-columns:1fr}
}

@media (max-width:900px){
  .nav-links{display:none}
  .burger{display:flex}
  body.is-locked{overflow:hidden}
}

@media (max-width:640px){
  :root{--nav-h:58px}
  body{font-size:15.5px}
  .hero{padding-top:calc(var(--nav-h) + 46px);padding-bottom:56px}
  .h1{font-size:clamp(2.1rem,9vw,2.9rem)}
  .hero-cta{gap:9px}
  .hero-cta .btn{flex:1 1 auto;min-width:132px}
  .hero-meta{gap:14px}
  .hero-loc{padding-left:0;border-left:0;width:100%}

  .console-flow{padding:14px 12px 12px}
  .fall-row{grid-template-columns:88px 1fr 44px;gap:8px}
  .console-detail{min-height:74px}

  .metrics{grid-template-columns:1fr 1fr;gap:10px}
  .metric{padding:16px 14px}

  .case-row{grid-template-columns:1fr;gap:5px;padding:9px 0}
  .case-k{padding-top:0}

  .proj-top{grid-template-columns:1fr;gap:16px}
  .proj-toggle{justify-self:start}
  .proj-inner{grid-template-columns:1fr;gap:22px}

  .principles{grid-template-columns:1fr}

  .play-tab{padding:13px 16px;font-size:.7rem}
  .step{grid-template-columns:1fr;gap:6px}
  .step-who{order:-1}

  .foot-inner{flex-direction:column;align-items:flex-start;gap:18px}
  .resume-card{flex-direction:column;align-items:flex-start}
  .resume-card .btn{width:100%}
}

@media (max-width:400px){
  .metrics{grid-template-columns:1fr}
  .brand-text em{display:none}
}

/* larger tap targets where a mouse isn't available */
@media (hover:none){
  .nav-links a,.qbtn,.acomp,.node{min-height:44px}
  .node{justify-content:center}
  .rail-item{padding-block:18px}
}

/* ------------------------------------------------------- reduced motion */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .console-fall .fb{transform:scaleX(1)}
  .step{opacity:1;transform:none}
}

@media print{
  .nav,.sheet,.console,.play,.hero-cta,.form{display:none}
  body{background:#fff;color:#000}
}