/* ============================================================================
   EKG design system
   Dark is a live cardiac monitor. Light is the chart paper it prints on.
   The trace is green because that is what a monitor looks like, and because a
   page whose entire argument is "this only goes up" cannot be drawn in the
   colour of a sell candle.
   ========================================================================= */

/* ---- tokens ------------------------------------------------------------- */
:root{
  /* surfaces, light */
  --paper:#FAFCFB; --s1:#FFFFFF; --s2:#F2F7F4; --s3:#E9F1EC;
  --grid:#E3EDE7; --grid2:#D0E0D7;
  --ink:#08120E; --ink2:#475852; --ink3:#788983;
  --rule:#DCE7E1; --rule2:#C6D6CE; --hair:rgba(8,18,14,.06);

  --trace:#00794A; --trace2:#0B6B84; --hot:#8A5300; --bad:#A3202B;
  --line:#08120E; --ok:#00794A; --warn:#8A5300;
  --up1:#00794A; --up2:#0B6B84; --onAccent:#FFFFFF;
  --glow:rgba(0,121,74,.14);
  --glow2:rgba(11,107,132,.12);

  --sh1:0 1px 2px rgba(8,18,14,.05);
  --sh2:0 2px 4px rgba(8,18,14,.04), 0 8px 18px -10px rgba(8,18,14,.16);
  --sh3:0 4px 8px rgba(8,18,14,.05), 0 24px 48px -24px rgba(8,18,14,.28);

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

  /* space */
  --r1:6px; --r2:10px; --r3:16px; --r4:24px;
  --gut:20px;
  --maxw:1180px; --textw:68ch;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#04070A; --s1:#0A1014; --s2:#0E161B; --s3:#141F25;
  --grid:#0B1613; --grid2:#11211C;
  --ink:#E9F4EE; --ink2:#93A69F; --ink3:#65776F;
  --rule:#172320; --rule2:#22322D; --hair:rgba(255,255,255,.07);

  --trace:#19E68C; --trace2:#38BDF8; --hot:#FFB020; --bad:#FF6B7A;
  --line:#E9F4EE; --ok:#19E68C; --warn:#FFB020;
  --up1:#19E68C; --up2:#38BDF8;
  --onAccent:#02100A;
  --glow:rgba(25,230,140,.30);
  --glow2:rgba(56,189,248,.22);

  --sh1:0 1px 2px rgba(0,0,0,.5);
  --sh2:0 2px 6px rgba(0,0,0,.45), 0 10px 24px -12px rgba(0,0,0,.8);
  --sh3:0 6px 14px rgba(0,0,0,.5), 0 32px 60px -28px rgba(0,0,0,.95);
}}
:root[data-theme="dark"]{
  --paper:#04070A; --s1:#0A1014; --s2:#0E161B; --s3:#141F25;
  --grid:#0B1613; --grid2:#11211C;
  --ink:#E9F4EE; --ink2:#93A69F; --ink3:#65776F;
  --rule:#172320; --rule2:#22322D; --hair:rgba(255,255,255,.07);
  --trace:#19E68C; --trace2:#38BDF8; --hot:#FFB020; --bad:#FF6B7A;
  --line:#E9F4EE; --ok:#19E68C; --warn:#FFB020;
  --up1:#19E68C; --up2:#38BDF8;
  --onAccent:#02100A;
  --glow:rgba(25,230,140,.30); --glow2:rgba(56,189,248,.22);
  --sh1:0 1px 2px rgba(0,0,0,.5);
  --sh2:0 2px 6px rgba(0,0,0,.45), 0 10px 24px -12px rgba(0,0,0,.8);
  --sh3:0 6px 14px rgba(0,0,0,.5), 0 32px 60px -28px rgba(0,0,0,.95);
}

/* ---- base --------------------------------------------------------------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0}
body{
  background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:16.5px;line-height:1.62;
  -webkit-text-size-adjust:100%;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--gut);padding-right:var(--gut)}
.narrow{max-width:760px}
.measure{max-width:var(--textw)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* the graph-paper texture, used sparingly */
.graph{
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px),
    linear-gradient(var(--grid2) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid2) 1px,transparent 1px);
  background-size:12px 12px,12px 12px,60px 60px,60px 60px;
}

/* ---- type --------------------------------------------------------------- */
h1{font-family:var(--display);font-weight:900;letter-spacing:-.042em;line-height:.93;margin:0;text-wrap:balance}
h2{font-family:var(--display);font-weight:800;font-size:clamp(28px,4.2vw,42px);letter-spacing:-.03em;
  line-height:1.06;margin:0;text-wrap:balance}
h3{font-family:var(--display);font-weight:700;font-size:19px;letter-spacing:-.015em;margin:0}
p{margin:15px 0 0}
a{color:var(--trace);text-underline-offset:3px}
strong{font-weight:600}
em{font-style:italic}
code{font-family:var(--mono);font-size:.88em;background:var(--s2);border:1px solid var(--rule);
  padding:1.5px 6px;border-radius:var(--r1);word-break:break-word}
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--trace);margin:0;font-weight:500}
.lede{font-size:clamp(17px,2.1vw,20px);line-height:1.52;color:var(--ink2);text-wrap:pretty}
.num,.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.big-num{font-family:var(--mono);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.03em}

/* ---- nav ---------------------------------------------------------------- */
.nav{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--rule);
  background:color-mix(in srgb,var(--paper) 78%,transparent);backdrop-filter:blur(14px) saturate(140%)}
.nav .wrap{display:flex;align-items:center;gap:6px 24px;flex-wrap:wrap;padding-block:13px}
@media(max-width:720px){
  /* A sticky bar must never wrap: the second row covers the page underneath it.
     One row, scrolled sideways if it has to be, with the links kept reachable. */
  .nav .wrap{flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;gap:0 16px;
    padding-block:11px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .nav .wrap::-webkit-scrollbar{display:none}
  .brand{font-size:19px;margin-right:12px;flex:none}
  .nav a.l{flex:none;font-size:11px;letter-spacing:.1em}
  .badge{flex:none;margin-left:auto}
}
.brand{font-family:var(--display);font-weight:900;font-size:21px;letter-spacing:-.035em;
  text-decoration:none;color:var(--ink);margin-right:auto;display:flex;align-items:center;gap:8px}
.brand span{background:linear-gradient(95deg,var(--up1),var(--up2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.brand .mk{width:22px;height:22px;flex:none}
.nav a.l{font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink2);text-decoration:none;padding:5px 0;border-bottom:2px solid transparent;transition:color .15s}
.nav a.l:hover{color:var(--ink)}
.nav a.l[aria-current="page"]{color:var(--ink);border-bottom-color:var(--trace)}
.badge{position:relative;font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;
  border:1px solid color-mix(in srgb,var(--trace) 45%,transparent);color:var(--trace);
  padding:3px 9px 3px 19px;border-radius:999px;background:color-mix(in srgb,var(--trace) 8%,transparent)}
.badge:before{content:"";position:absolute;left:8px;top:50%;width:5px;height:5px;margin-top:-2.5px;
  border-radius:50%;background:var(--trace);animation:ping 2.4s ease-out infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 var(--glow)}70%{box-shadow:0 0 0 8px transparent}100%{box-shadow:0 0 0 0 transparent}}

/* ---- buttons ------------------------------------------------------------ */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12px;font-weight:500;
  letter-spacing:.11em;text-transform:uppercase;text-decoration:none;padding:13px 22px;border-radius:999px;
  border:1px solid var(--rule2);color:var(--ink);background:var(--s1);
  transition:transform .16s cubic-bezier(.2,.7,.3,1),box-shadow .16s,border-color .16s;box-shadow:var(--sh1)}
.btn:hover{transform:translateY(-1.5px);box-shadow:var(--sh2);border-color:var(--trace)}
.btn-primary{background:linear-gradient(100deg,var(--up1),var(--up2));border-color:transparent;
  color:var(--onAccent);font-weight:600;box-shadow:0 8px 24px -10px var(--trace)}
.btn-primary:hover{box-shadow:0 14px 32px -10px var(--trace);border-color:transparent}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}

/* ---- surfaces ----------------------------------------------------------- */
.card{position:relative;border:1px solid var(--rule);border-radius:var(--r3);background:var(--s1);
  box-shadow:var(--sh2);overflow:hidden}
.card:before{content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,var(--hair) 18%,var(--hair) 82%,transparent);pointer-events:none}
.card-pad{padding:24px}
.card-glow{box-shadow:var(--sh3),0 0 0 1px var(--rule),0 0 80px -40px var(--trace)}

/* ---- section scaffolding ------------------------------------------------ */
.sec{padding-block:clamp(56px,8vw,96px);scroll-margin-top:70px}
.sec-head{display:grid;gap:14px;margin-bottom:34px}
.sec-head .lede{max-width:64ch}
.rail{display:flex;align-items:center;gap:14px}
.rail .n{font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;color:var(--trace);font-weight:500}
.rail .bar{height:1px;flex:1;background:linear-gradient(90deg,var(--rule2),transparent)}
.band{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);background:var(--s2)}

/* ---- stats -------------------------------------------------------------- */
.stat dt{font-family:var(--mono);font-size:11.5px;letter-spacing:.15em;text-transform:uppercase;
  color:var(--ink3);margin:0 0 7px}
.stat dd{margin:0;font-family:var(--mono);font-weight:600;font-variant-numeric:tabular-nums;
  letter-spacing:-.03em;font-size:clamp(20px,2.7vw,27px);line-height:1.1}
.stat dd small{display:block;font-family:var(--sans);font-weight:400;font-size:12.5px;
  letter-spacing:0;color:var(--ink3);margin-top:7px;line-height:1.4}

.statgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(178px,1fr));gap:1px;
  background:var(--rule);border:1px solid var(--rule);border-radius:var(--r3);overflow:hidden}
.statgrid > div{background:var(--s1);padding:20px 20px 22px;min-width:0}
.statgrid dd{overflow-x:auto;scrollbar-width:none}
.statgrid dd::-webkit-scrollbar{display:none}
.statgrid .hot dd{color:var(--trace)}

/* vitals: the older, borderless variant the monitor uses */
.vitals{display:grid;grid-template-columns:repeat(auto-fit,minmax(178px,1fr));border-top:1px solid var(--rule)}
.vitals div{border-bottom:1px solid var(--rule);padding:15px 0}
.vitals dt{font-size:12.5px;color:var(--ink2);margin:0 0 3px}
.vitals dd{margin:0;font-family:var(--mono);font-weight:500;font-size:19px;
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;word-break:break-word}
.vitals small{display:block;font-family:var(--sans);font-size:12.5px;color:var(--ink3);margin-top:2px}

/* ---- tables ------------------------------------------------------------- */
table{border-collapse:collapse;width:100%;font-size:14.5px}
/* A six column table on a phone shows two and a half of them, and a reader who
   cannot tell there is more will simply believe the other columns do not exist.
   The two `local` layers are painted with the content and slide away as it
   scrolls; the two `scroll` layers stay pinned to the box. The result is a soft
   edge that appears on whichever side still has something behind it and
   vanishes at the ends, with no script and no scroll listener. */
.scroll{overflow-x:auto;border:1px solid var(--rule);border-radius:var(--r3);background:var(--s1);
  box-shadow:var(--sh1);
  background-image:
    linear-gradient(to right, var(--s1) 28%, transparent),
    linear-gradient(to left,  var(--s1) 28%, transparent),
    linear-gradient(to right, color-mix(in srgb,var(--ink) 13%,transparent), transparent),
    linear-gradient(to left,  color-mix(in srgb,var(--ink) 13%,transparent), transparent);
  background-position:left center,right center,left center,right center;
  background-size:44px 100%,44px 100%,18px 100%,18px 100%;
  background-repeat:no-repeat;
  background-attachment:local,local,scroll,scroll}
.scroll table{min-width:460px}
.scroll + .swipe{display:none}
@media(max-width:720px){
  .scroll + .swipe{display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
    text-transform:uppercase;color:var(--ink3);margin:9px 0 0}
  .scroll + .swipe:before{content:"\2194\FE0E  "}
}
th,td{text-align:left;padding:13px 18px;border-bottom:1px solid var(--rule)}
th{font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink3);font-weight:500;background:var(--s2)}
td.n,th.n{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:var(--s2)}

/* ---- callouts, pills ---------------------------------------------------- */
.callout{border-left:2px solid var(--trace);border-radius:0 var(--r2) var(--r2) 0;
  background:linear-gradient(90deg,color-mix(in srgb,var(--trace) 9%,transparent),transparent 76%);
  padding:14px 18px;margin-top:26px}
.callout p:first-child{margin-top:0}
.callout.warn{border-left-color:var(--warn);
  background:linear-gradient(90deg,color-mix(in srgb,var(--warn) 11%,transparent),transparent 76%)}
.pill{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11.5px;
  letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--rule2);color:var(--ink2);
  padding:6px 13px;border-radius:999px;background:var(--s1);white-space:nowrap}
.pill:before{content:"";width:5px;height:5px;border-radius:50%;background:var(--trace);flex:none}

/* ---- charts (class names are shared with charts.js / history.js) -------- */
:root{--c1:#00794A; --c2:#0B6B84; --c3:#8A5300; --c4:#6D4BC4;
  --gridline:#E1EBE5; --axis:#6C7E78}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --c1:#19E68C; --c2:#38BDF8; --c3:#FFB020; --c4:#A78BFA;
  --gridline:#172320; --axis:#7C8E87}}
:root[data-theme="dark"]{--c1:#19E68C; --c2:#38BDF8; --c3:#FFB020; --c4:#A78BFA;
  --gridline:#172320; --axis:#7C8E87}

figure.chart{margin:0;position:relative}
figure.chart figcaption{font-size:13.5px;line-height:1.55;color:var(--ink2);margin-top:14px;max-width:70ch}
.chartbox{position:relative;border:1px solid var(--rule);border-radius:var(--r3);background:var(--s1);
  padding:22px 22px 16px;box-shadow:var(--sh2)}
.chart h3{font-size:18px;margin:0 0 4px}
.chart .kicker{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink3);margin:0 0 18px}
.chart svg text{font-family:var(--mono);fill:var(--axis)}
.chart .ax{font-size:11px}
.chart .lbl{font-size:16px;font-weight:600;fill:var(--ink)}
.chart .sub{font-size:11px;fill:var(--ink2)}
.chart .note{font-size:11.5px;fill:var(--ink)}
.chart .note.dim,.chart .ax.dim{fill:var(--ink3)}
.chart .grid{stroke:var(--gridline);stroke-width:1}
.chart .ref{stroke:var(--ink3);stroke-width:1.5;stroke-dasharray:4 4}
.chart .ln{fill:none;stroke-width:2.25;stroke-linejoin:round;stroke-linecap:round}
.chart .area{opacity:.14;stroke:none}
.chart .dot{stroke:var(--s1);stroke-width:2}
.chart .c1{stroke:var(--c1)} .chart .c1.area,.chart .c1.dot{fill:var(--c1)}
.chart .ln.c2{stroke:var(--c2)} .chart .c2.dot{fill:var(--c2);stroke:var(--s1);stroke-width:2}
.chart .mk{rx:3}
.chart .mk.c1{fill:var(--c1);stroke:none}
.chart .mk.c2{fill:var(--c2);stroke:none}
.chart .mk.c3{fill:var(--c3);stroke:none}
.chart .mk.ret{fill:url(#hatch);stroke:var(--rule2);stroke-width:1}
.chart .seg{cursor:default}
.chart .empty,.chartbox .empty{font-size:13px;color:var(--ink3);margin:12px 0 0}
.ctip{position:absolute;transform:translate(-50%,-100%);pointer-events:none;
  background:var(--ink);color:var(--paper);font-size:12.5px;line-height:1.4;
  padding:8px 11px;border-radius:var(--r1);white-space:nowrap;z-index:5;box-shadow:var(--sh2)}
.ctip b{font-weight:600}
.ctip .m{opacity:.75}

/* ---- the ECG trace ------------------------------------------------------ */
.pulse{display:block;width:100%;overflow:visible}
.pulse .tr{fill:none;stroke:var(--trace);stroke-width:2.25;stroke-linecap:round;stroke-linejoin:round;
  filter:drop-shadow(0 0 7px var(--glow))}
.pulse .tr.ghost{opacity:.15;filter:none}
.pulse .sweep{stroke-dasharray:1200;stroke-dashoffset:1200;animation:sweep 4.6s linear infinite}
@keyframes sweep{0%{stroke-dashoffset:1200}55%{stroke-dashoffset:0}100%{stroke-dashoffset:-1200}}

/* ---- footer ------------------------------------------------------------- */
footer{border-top:1px solid var(--rule);background:var(--s2);margin-top:0}
footer .wrap{padding-block:40px 64px}
.addr{font-family:var(--mono);font-size:12px;color:var(--ink2);margin-top:10px;display:grid;gap:5px}
.addr a{word-break:break-all;text-decoration:none}
.addr a:hover{text-decoration:underline}
.fine{font-size:13px;line-height:1.6;color:var(--ink3);max-width:76ch;margin-top:22px}

/* ---- motion ------------------------------------------------------------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s cubic-bezier(.2,.7,.3,1),transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--trace);outline-offset:2px;border-radius:var(--r1)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}