/* Angel Barrio — systematic trading site
   Blotter direction: hairline rules, wide monospace as the display face,
   Inter for prose, one blue signal used only for links and live data. */

:root{
  /* Palette: pale sky blue on deep charcoal. Alternates live in assets/themes/. */
  --ink:#14171C;
  --rule:#2F373F;
  --rule-soft:#20262E;
  --text:#E3EAF1;
  --text-quiet:#B4BFCA;
  --dim:#8E99A5;
  --dimmer:#6C7782;
  --signal:#A6C9F2;
  --amber:#D3B283;

  --mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --prose-weight:300;
  --display:var(--mono);
  --display-track:-.03em;
  --title-track:-.03em;

  --measure:44ch;
  --gutter:34px;
  --max:1060px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--sans);
  font-weight:var(--prose-weight);
  font-size:14.5px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
::selection{background:#1E3A6B;color:#EAF1FA}
a{color:var(--signal);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}

.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.mono{font-family:var(--mono);letter-spacing:-.05em}
.rule{border:0;border-top:1px solid var(--rule);margin:0}

/* ---------- hero: name, what I do, where to find me ---------- */
.hero{padding:96px 0 52px}
.hero h1{
  font-family:var(--display);
  font-weight:500;
  font-size:clamp(30px,5.4vw,56px);
  line-height:1.02;
  letter-spacing:var(--display-track);
  margin:0 0 26px;
}
.hero-desc{
  max-width:none;
  font-size:15px;
  line-height:1.62;
  margin:0 0 30px;
  color:var(--text);
}
.hero-links{
  display:flex;flex-wrap:wrap;gap:8px 26px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:-.05em;
}
.hero-links a{color:var(--signal)}
.hero-links span{color:var(--dimmer)}
.tracking-note{
  max-width:84ch;margin:25px 0 0;color:var(--dimmer);
  font-family:var(--mono);font-size:10.5px;line-height:1.65;letter-spacing:-.035em;
}

/* ---------- blotter ---------- */
.blotter{padding-bottom:14px}
.bhead,.brow{
  display:grid;
  grid-template-columns:40px minmax(0,1fr) 78px 62px 64px 82px 128px;
  gap:24px;
  align-items:start;
}
.bhead{
  font-family:var(--mono);font-size:10px;letter-spacing:-.04em;color:var(--dimmer);
  padding:15px 0 11px;border-bottom:1px solid var(--rule);
}
.bhead span:nth-child(n+3){text-align:right}
.bhead span:last-child{text-align:left}
.b-nodata{font-family:var(--mono);font-size:10.5px;letter-spacing:-.04em;color:var(--dimmer);padding-top:5px}

.brow{padding:26px 0;border-bottom:1px solid var(--rule-soft)}
.brow:last-child{border-bottom:none}
.b-idx{font-family:var(--mono);font-size:11px;letter-spacing:-.04em;color:#4C5663;padding-top:6px}
.b-title{font-family:var(--display);font-weight:400;font-size:17.5px;letter-spacing:var(--title-track);margin:0 0 6px;line-height:1.15}
.b-title a{color:var(--text)}
.b-title a:hover{color:#fff;text-decoration:none}
.b-meta{display:flex;align-items:center;gap:8px;font-size:11.5px;color:var(--dim);margin-bottom:10px}
.b-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--signal);flex:none}
.b-meta .dot.paper{background:var(--dim)}
.b-meta .dot.archived{background:#3B444F}

/* a live account is a thing still running: the cursor says so without a label */
.cursor{color:var(--signal);animation:blink 1.6s steps(1,end) infinite}
@keyframes blink{0%{opacity:1}50%{opacity:.45}100%{opacity:1}}
@media (prefers-reduced-motion:reduce){.cursor{animation:none}}
.b-desc{margin:0 0 14px;max-width:var(--measure);font-size:13.5px;color:var(--text-quiet)}
.b-links{display:flex;flex-wrap:wrap;gap:8px 20px;font-family:var(--mono);font-size:11px;letter-spacing:-.05em}
.b-metrics{display:contents}
.b-metric{font-family:var(--mono);text-align:right;letter-spacing:-.06em;padding-top:3px}
.b-metric b{display:block;font-size:13.5px;font-weight:400}
.b-metric b.neg{color:var(--amber)}
.b-metric span{display:none;font-size:10px;letter-spacing:-.04em;color:var(--dimmer)}
.b-spark{width:128px;height:46px;margin-top:2px}

/* daily returns bars and the state before the first sync */
.chart .bars{height:84px;margin-top:10px}
.chart .bar-up{fill:var(--signal);opacity:.85}
.chart .bar-down{fill:var(--amber);opacity:.85}
.chart.pending{border:1px dashed var(--rule);border-radius:4px}
.pending-box{
  padding:46px 22px;text-align:center;font-family:var(--mono);font-size:11.5px;
  letter-spacing:-.04em;color:var(--dim);line-height:1.7;
}

/* chart paint: tokens only, so themes restyle every curve at once */
.b-spark .area{fill:var(--signal);opacity:.09}
.b-spark .line{fill:none;stroke:var(--signal);stroke-width:1.2}
.chart .grid{stroke:var(--rule-soft)}
.chart .line{fill:none;stroke:var(--signal);stroke-width:1.6}
.chart .stop-top{stop-color:var(--signal);stop-opacity:.20}
.chart .stop-bottom{stop-color:var(--signal);stop-opacity:0}
.chart .uw-area{fill:var(--amber);opacity:.14}
.chart .uw-line{fill:none;stroke:var(--amber);stroke-width:1.1;opacity:.75}

/* ---------- footer ---------- */
.foot{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:20px 0 64px;border-top:1px solid var(--rule);
  font-family:var(--mono);font-size:10.5px;letter-spacing:-.04em;color:var(--dimmer);
}

/* ---------- project page ---------- */
body[data-project],body[data-page="about"]{--max:880px}
.back{display:inline-block;padding:26px 0 0;font-family:var(--mono);font-size:11px;letter-spacing:-.05em}
.p-head{padding:34px 0 26px}
.p-head h1{
  font-family:var(--display);font-weight:500;font-size:clamp(24px,3.6vw,36px);
  letter-spacing:var(--display-track);line-height:1.08;margin:0 0 22px;max-width:20ch;
}
.spec{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:4px 0}
.spec dl{display:grid;grid-template-columns:104px 1fr;gap:0;margin:0}
.spec dt{
  font-family:var(--mono);font-size:10px;letter-spacing:-.02em;color:var(--dimmer);
  padding:9px 0;border-bottom:1px solid var(--rule-soft);
}
.spec dd{
  margin:0;padding:9px 0;font-size:12.5px;color:var(--text);
  border-bottom:1px solid var(--rule-soft);
}
.spec dl>*:nth-last-child(-n+2){border-bottom:0}

.thesis{
  font-size:19.5px;line-height:1.5;max-width:none;margin:44px 0 8px;
  color:var(--text);
}
.thesis.quiet{color:var(--text-quiet)}

.sec{padding:40px 0 0}
.sec h2{
  font-family:var(--mono);font-size:10.5px;letter-spacing:-.02em;color:var(--dimmer);
  font-weight:400;margin:0 0 18px;padding-bottom:9px;border-bottom:1px solid var(--rule);
}
.sec p{max-width:none;font-size:14px;color:var(--text-quiet);margin:0 0 15px}
.sec p:last-child{margin-bottom:0}
.sec ul{max-width:none;margin:0;padding-left:18px;color:var(--text-quiet);font-size:14px}
.sec li{margin-bottom:9px}
.sec li::marker{color:var(--dimmer)}

/* system design pipeline */
.pipe{display:grid;grid-template-columns:repeat(6,1fr);border:1px solid var(--rule);margin-top:4px}
.pipe .stage{padding:16px 14px 18px;border-right:1px solid var(--rule);position:relative}
.pipe .stage:last-child{border-right:0}
.pipe .stage b{
  display:block;font-family:var(--mono);font-size:11px;letter-spacing:-.05em;
  font-weight:400;color:var(--text);margin-bottom:7px;
}
.pipe .stage span{display:block;font-size:11px;line-height:1.5;color:var(--dim)}
.pipe .stage:not(:last-child)::after{
  content:"";position:absolute;right:-4px;top:50%;width:7px;height:7px;
  border-top:1px solid var(--signal);border-right:1px solid var(--signal);
  transform:translateY(-50%) rotate(45deg);background:var(--ink);
}

/* results */
.results{display:grid;grid-template-columns:200px 1fr;gap:34px;align-items:start}
.r-metrics{display:grid;gap:0}
.r-metrics div{padding:11px 0;border-bottom:1px solid var(--rule-soft)}
.r-metrics div:last-child{border-bottom:0}
.r-metrics b{
  display:block;font-family:var(--mono);font-size:19px;font-weight:400;letter-spacing:-.07em;
}
.r-metrics b.neg{color:var(--amber)}
.r-metrics span{font-family:var(--mono);font-size:10px;letter-spacing:-.03em;color:var(--dimmer)}
.chart{position:relative}
.chart svg{display:block;width:100%}
.chart .equity{height:240px}
.chart .under{height:74px;margin-top:10px}
.chart-cap{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-family:var(--mono);font-size:10px;letter-spacing:-.04em;color:var(--dimmer);
  padding-top:9px;border-top:1px solid var(--rule-soft);margin-top:9px;
}
.chart-cap b{color:var(--text);font-weight:400}
/* how the curve was built, said once, next to the curve itself */
.chart-note{
  margin:14px 0 0;padding-top:12px;border-top:1px solid var(--rule-soft);
  font-size:12px;line-height:1.65;font-weight:var(--prose-weight);color:var(--dim);
}

.todo{color:var(--dimmer)}
.formula{
  font-family:var(--mono);font-size:15px;letter-spacing:-.02em;color:var(--text);
  padding:14px 0 16px;
}
.links-list{display:grid;gap:11px;max-width:none}
.links-list a{font-family:var(--mono);font-size:12.5px;letter-spacing:-.05em}
.links-list p{margin:0}

.books{display:grid;grid-template-columns:repeat(5,1fr);gap:28px 18px;margin:0}
.book{display:flex;flex-direction:column;gap:9px}
.book-cover{
  width:100%;aspect-ratio:2/3;background-size:cover;background-position:center;
  background-color:var(--rule-soft);border:1px solid var(--rule);
}
.book-title{font-family:var(--mono);font-size:11px;letter-spacing:-.03em;color:var(--text-quiet);line-height:1.35}

.p-foot{margin-top:52px}

/* ---------- responsive ---------- */
@media (max-width:860px){
  :root{--gutter:20px}
  .hero{padding:60px 0 38px}
  .bhead{display:none}
  .brow{grid-template-columns:28px minmax(0,1fr);gap:14px;padding:24px 0}
  .b-title{font-size:17px;overflow-wrap:break-word}
  .b-metrics{display:flex;gap:28px;grid-column:2;margin-top:15px}
  .b-metric{text-align:left;padding-top:0}
  .b-metric span{display:block}
  .b-spark{grid-column:2;width:100%;height:56px;margin-top:14px}
  .results{grid-template-columns:1fr;gap:22px}
  .r-metrics{grid-template-columns:repeat(3,1fr);gap:18px}
  .r-metrics div{border-bottom:0;padding:0}
  .pipe{grid-template-columns:1fr 1fr;border-bottom:0}
  .pipe .stage{border-bottom:1px solid var(--rule)}
  .pipe .stage:nth-child(2n){border-right:0}
  .pipe .stage::after{display:none}
  .thesis{font-size:20px;max-width:none}
  .spec dl{grid-template-columns:92px 1fr}
  .books{grid-template-columns:repeat(3,1fr);gap:22px 14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
}