/* Shared identity for the project page (docs/index.html) and the assistant (docs/app/).
   Calm, readable, accessible: Atkinson Hyperlegible (Braille Institute, OFL, self-hosted),
   indigo ink on lilac-grey paper, one colour per condition, red only for urgent messages. */
@font-face{font-family:"Atkinson Hyperlegible";src:url("fonts/atkinson-hyperlegible-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Atkinson Hyperlegible";src:url("fonts/atkinson-hyperlegible-latin-700-normal.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Atkinson Hyperlegible";src:url("fonts/atkinson-hyperlegible-latin-400-italic.woff2") format("woff2");font-weight:400;font-style:italic;font-display:swap}

:root{
  --paper:#F3F2F8; --surface:#FFFFFF; --ink:#1E2150; --ink2:#4A4E78; --line:#D9D8E8; --tint:#E8E7F3;
  --asthma:#0F7C80; --asthma-soft:#DDF1F1; --diabetes:#9A5B00; --diabetes-fill:#F2B544; --diabetes-soft:#FCEFD6;
  --both:#4B3F9E; --urgent:#B3261E; --urgent-soft:#FBE6E4; --ok:#24704A; --ok-soft:#E0F2E8; --warn:#8A5A00;
  --focus:#2F5BFF; --radius-s:6px; --radius-l:14px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#15162A; --surface:#1D1F38; --ink:#ECEBFA; --ink2:#B8B8D6; --line:#34365A; --tint:#25274A;
  --asthma:#5CC9C9; --asthma-soft:#16393D; --diabetes:#F2B544; --diabetes-fill:#F2B544; --diabetes-soft:#3D3018;
  --both:#A89BFF; --urgent:#FF8A80; --urgent-soft:#44201E; --ok:#7AD3A3; --ok-soft:#173828; --warn:#F2C46B; --focus:#8EA6FF;
  color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#15162A; --surface:#1D1F38; --ink:#ECEBFA; --ink2:#B8B8D6; --line:#34365A; --tint:#25274A;
  --asthma:#5CC9C9; --asthma-soft:#16393D; --diabetes:#F2B544; --diabetes-fill:#F2B544; --diabetes-soft:#3D3018;
  --both:#A89BFF; --urgent:#FF8A80; --urgent-soft:#44201E; --ok:#7AD3A3; --ok-soft:#173828; --warn:#F2C46B; --focus:#8EA6FF;
  color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.6 "Atkinson Hyperlegible",system-ui,sans-serif}
a{color:var(--both);text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px;top:8px;background:var(--surface);padding:8px 12px;z-index:10}
.skip:focus{left:8px}
h1,h2,h3{line-height:1.2;font-weight:700;letter-spacing:-0.01em}
h1{font-size:2.3rem;margin:0 0 .5rem}
h2{font-size:1.6rem;margin:0 0 .75rem}
h3{font-size:1.2rem;margin:1.6rem 0 .4rem}
p{margin:0 0 1rem;max-width:68ch}
small,.small{font-size:.86rem}
.muted{color:var(--ink2)}
code{font:.88em ui-monospace,Menlo,Consolas,monospace;background:var(--tint);padding:1px 5px;border-radius:4px}

/* the advice banner: always visible, never dismissable */
.banner{background:var(--ink);color:var(--paper);padding:10px 20px;font-size:.95rem;text-align:center}
.banner strong{font-weight:700}

/* ---- two-pane layout: journey rail + reading column ---- */
.shell{display:grid;grid-template-columns:minmax(220px,270px) minmax(0,1fr);gap:0;max-width:1180px;margin:0 auto}
.rail{position:sticky;top:0;align-self:start;height:100vh;padding:36px 24px 24px 28px;display:flex;flex-direction:column;gap:20px}
.brand{font-weight:700;font-size:1.05rem;line-height:1.3;text-decoration:none;color:var(--ink)}
.journey{position:relative;list-style:none;margin:0;padding:0 0 0 30px}
/* the signature: two strands, one per condition, running side by side down the rail */
.journey::before,.journey::after{content:"";position:absolute;top:6px;bottom:6px;width:4px;border-radius:2px}
.journey::before{left:6px;background:var(--asthma)}
.journey::after{left:13px;background:var(--diabetes-fill)}
.journey li{position:relative;margin:0 0 4px}
.journey a{display:block;padding:7px 10px;border-radius:var(--radius-s);text-decoration:none;color:var(--ink2);font-size:.98rem}
.journey a:hover{background:var(--tint);color:var(--ink)}
.journey a[aria-current="true"]{background:var(--surface);color:var(--ink);font-weight:700;box-shadow:inset 3px 0 0 var(--both)}
.rail .legend{font-size:.82rem;color:var(--ink2);display:grid;gap:4px}
.dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px;vertical-align:baseline}
.dot.asthma{background:var(--asthma)}.dot.diabetes{background:var(--diabetes-fill)}
.rail .tools{margin-top:auto;display:grid;gap:8px;font-size:.88rem}

.main{padding:40px 40px 96px;min-width:0;background:var(--surface);border-left:1px solid var(--line);min-height:100vh}
.section{padding:28px 0 36px;border-top:1px solid var(--line)}
.section:first-of-type{border-top:0;padding-top:4px}
.lede{font-size:1.2rem;color:var(--ink2);max-width:60ch}

.callout{border-radius:var(--radius-l);padding:18px 20px;margin:0 0 20px;background:var(--tint)}
.callout.urgent{background:var(--urgent-soft);border-left:6px solid var(--urgent)}
.callout.ok{background:var(--ok-soft);border-left:6px solid var(--ok)}
.callout.note{background:var(--tint);border-left:6px solid var(--both)}

.tag{display:inline-block;font-size:.8rem;font-weight:700;border-radius:999px;padding:2px 10px;margin-right:6px}
.tag.asthma{background:var(--asthma-soft);color:var(--asthma)}
.tag.diabetes{background:var(--diabetes-soft);color:var(--diabetes)}
.tag.both{background:var(--tint);color:var(--both)}
.tag.stage{background:var(--tint);color:var(--ink2)}

.figure{margin:18px 0 24px}
.figure figcaption{font-size:.88rem;color:var(--ink2);margin-top:6px;max-width:68ch}
.tw{overflow-x:auto;margin:12px 0 20px;border:1px solid var(--line);border-radius:var(--radius-s)}
table{border-collapse:collapse;width:100%;font-size:.92rem;font-variant-numeric:tabular-nums}
th,td{padding:8px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--tint);font-weight:700}
tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;white-space:nowrap}

button,.btn{font:inherit;font-size:1rem;border-radius:var(--radius-s);border:1.5px solid var(--ink);background:var(--ink);color:var(--paper);padding:10px 18px;cursor:pointer;min-height:44px}
button.secondary,.btn.secondary{background:transparent;color:var(--ink)}
button:disabled{opacity:.55;cursor:not-allowed}
input,textarea,select{font:inherit;color:var(--ink);background:var(--surface);border:1.5px solid var(--ink2);border-radius:var(--radius-s);padding:10px 12px;min-height:44px}

@media (max-width:900px){
  body{font-size:17px}
  .shell{display:block}
  .rail{position:sticky;top:0;z-index:5;height:auto;padding:10px 16px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:row;align-items:center;gap:12px;overflow-x:auto;scrollbar-width:none}
  .rail::-webkit-scrollbar{display:none}
  .rail .brand,.rail .legend,.rail .tools{display:none}
  .journey{display:flex;gap:4px;padding:6px 0 0;white-space:nowrap}
  .journey::before{left:0;right:50%;top:0;bottom:auto;height:3px;width:auto}
  .journey::after{left:50%;right:0;top:0;bottom:auto;height:3px;width:auto}
  .journey a{padding:6px 10px;font-size:.92rem}
  .main{padding:22px 16px 72px;border-left:0}
  h1{font-size:1.8rem}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}