/* Layout: sticky header (brand, page tabs, range control), then a page: stacked
   sections, each a 12-column grid of chart panels. Landing view replaces pages
   until an export has been loaded. */
:root{
  --bg:#f3f6f8; --surface:#ffffff; --ink:#0e1a24; --ink2:#46586a; --muted:#6f7f8c;
  --line:#dde4ea; --grid:#e9eef2;
  --c-act:#2a78d6; --c-heart:#e34948; --c-sleep:#6250d6; --c-body:#1baf7a; --c-warm:#eb6834;
  --st-deep:#6250d6; --st-core:#2a78d6; --st-rem:#1baf7a; --st-awake:#eb6834; --st-inbed:#b9c4ce;
  --h0:#e9eef2; --h1:#c4dbf5; --h2:#8fbaea; --h3:#4d90de; --h4:#1d5fb0;
  --f-display:'Bricolage Grotesque','Avenir Next',system-ui,sans-serif;
  --f-body:'Instrument Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0e1317; --surface:#161d23; --ink:#e8eef2; --ink2:#aebbc6; --muted:#8393a0;
  --line:#26313a; --grid:#212b33;
  --c-act:#3987e5; --c-heart:#e66767; --c-sleep:#9085e9; --c-body:#199e70; --c-warm:#d95926;
  --st-deep:#9085e9; --st-core:#3987e5; --st-rem:#199e70; --st-awake:#d95926; --st-inbed:#3a4753;
  --h0:#212b33; --h1:#1d3a5c; --h2:#25568c; --h3:#3987e5; --h4:#7db4f5;
  color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0e1317; --surface:#161d23; --ink:#e8eef2; --ink2:#aebbc6; --muted:#8393a0;
  --line:#26313a; --grid:#212b33;
  --c-act:#3987e5; --c-heart:#e66767; --c-sleep:#9085e9; --c-body:#199e70; --c-warm:#d95926;
  --st-deep:#9085e9; --st-core:#3987e5; --st-rem:#199e70; --st-awake:#d95926; --st-inbed:#3a4753;
  --h0:#212b33; --h1:#1d3a5c; --h2:#25568c; --h3:#3987e5; --h4:#7db4f5;
  color-scheme:dark}
*{box-sizing:border-box}
html{scroll-padding-top:70px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:14px;line-height:1.45;
  padding:0 max(16px,env(safe-area-inset-right,0px)) 48px max(16px,env(safe-area-inset-left,0px))}
[hidden]{display:none!important}
.wrap{max-width:1180px;margin:0 auto}
a{color:var(--c-act)}
button{font:inherit}
:focus-visible{outline:2px solid var(--c-act);outline-offset:2px}

/* header */
header.top{position:sticky;top:0;z-index:20;background:var(--bg);border-bottom:1px solid var(--line);
  margin-inline:calc(-1 * max(16px,env(safe-area-inset-left,0px)));padding:10px max(16px,env(safe-area-inset-left,0px))}
.bar{max-width:1180px;margin:0 auto;display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between}
.brand{font-family:var(--f-display);font-weight:700;font-size:18px;letter-spacing:-.01em;display:flex;align-items:center;gap:8px}
.brand svg{width:22px;height:22px;color:var(--c-heart)}
nav.tabs{display:flex;gap:4px;flex-wrap:wrap}
nav.tabs button{color:var(--ink2);background:none;border:0;padding:5px 10px;border-radius:6px;font-weight:500;cursor:pointer}
nav.tabs button:hover{background:var(--grid);color:var(--ink)}
nav.tabs button[aria-current="page"]{background:var(--ink);color:var(--bg)}
.ctrls{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}
.seg button{font-weight:500;border:0;background:transparent;color:var(--ink2);padding:5px 12px;cursor:pointer}
.seg button+button{border-left:1px solid var(--line)}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.iconbtn{border:1px solid var(--line);background:var(--surface);color:var(--ink2);border-radius:8px;padding:5px 9px;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.iconbtn:hover{color:var(--ink);background:var(--grid)}
.iconbtn svg{width:16px;height:16px}

/* typography */
.intro{padding:28px 0 8px;display:grid;gap:6px}
h1{font-family:var(--f-display);font-size:clamp(28px,4.6vw,44px);line-height:1.05;letter-spacing:-.02em;margin:0;text-wrap:balance}
h2{font-family:var(--f-display);font-size:24px;letter-spacing:-.01em;margin:0}
.sub{color:var(--ink2);max-width:75ch;margin:0}
.note{color:var(--muted);font-size:12.5px;margin:6px 0 0;max-width:85ch}
.lead{font-size:16px;color:var(--ink);max-width:70ch;margin:0}
.lead b{font-weight:600}
.method{color:var(--muted);font-size:12.5px;max-width:85ch;margin:0}
.secnav{display:flex;gap:4px;flex-wrap:wrap;margin-top:6px}
.secnav a{color:var(--ink2);text-decoration:none;padding:3px 10px;border-radius:999px;border:1px solid var(--line);font-size:12.5px;background:var(--surface)}
.secnav a:hover{color:var(--ink);background:var(--grid)}

/* sections and panels */
section{margin-top:40px;display:grid;gap:14px;grid-template-columns:minmax(0,1fr)}
.sechead{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.sechead p{margin:0;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:14px}
.p{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px 16px 12px;min-width:0;display:flex;flex-direction:column;gap:8px}
.s12{grid-column:span 12}.s8{grid-column:span 8}.s6{grid-column:span 6}.s4{grid-column:span 4}.s3{grid-column:span 3}
@media (max-width:900px){.s8,.s4,.s6{grid-column:span 12}.s3{grid-column:span 6}}
@media (max-width:480px){.s3{grid-column:span 12}}
.p h3{margin:0;font-size:14px;font-weight:600}
.p .cap{margin:-4px 0 0;color:var(--muted);font-size:12.5px}
.phead{display:flex;justify-content:space-between;gap:10px;align-items:baseline;flex-wrap:wrap}

/* KPIs */
.kpis{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px;margin-top:18px}
@media (max-width:1000px){.kpis{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:560px){.kpis{grid-template-columns:repeat(2,minmax(0,1fr))}}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 14px;min-width:0;display:grid;gap:2px;align-content:start}
.kpi .l{color:var(--ink2);font-size:12.5px;font-weight:500}
.kpi .v{font-family:var(--f-display);font-weight:700;font-size:clamp(20px,2.3vw,28px);white-space:nowrap;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.1}
.kpi .v small{font-size:13px;font-weight:500;color:var(--muted);margin-left:3px;font-family:var(--f-body);letter-spacing:0}
.kpi .d{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.kpi svg{display:block;width:100%;height:28px;margin-top:4px}

.hl,.vlist{display:grid;gap:8px;margin:0;padding:0;list-style:none}
.hl li{padding-left:14px;position:relative;color:var(--ink2)}
.hl li::before{content:"";position:absolute;left:0;top:.6em;width:6px;height:6px;border-radius:50%;background:var(--c-act)}
.hl b,.vlist b{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}
.vlist{gap:12px}
.vlist li{color:var(--ink2);max-width:80ch}
.vlist li strong{display:block;color:var(--ink);font-family:var(--f-display);font-size:16px;font-weight:700;margin-bottom:1px}

/* charts */
.chart{position:relative;min-height:60px}
.chart svg{display:block;width:100%;height:auto;overflow:visible}
.chart text,.hyp text{font-family:var(--f-body);font-size:11px;fill:var(--muted);font-variant-numeric:tabular-nums}
.chart .gl{stroke:var(--grid);stroke-width:1}
.chart .ax{stroke:var(--line);stroke-width:1}
.chart .ref{stroke:var(--muted);stroke-width:1;stroke-dasharray:3 3}
.chart .reft{fill:var(--muted)}
.chart .cross{stroke:var(--ink2);stroke-width:1;stroke-dasharray:2 2}
.legend{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:12px;color:var(--ink2);margin-bottom:6px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:6px;vertical-align:-1px}
.tip{position:fixed;pointer-events:none;background:var(--ink);color:var(--bg);border-radius:8px;padding:7px 10px;font-size:12px;line-height:1.5;z-index:50;white-space:nowrap;box-shadow:0 4px 14px rgba(0,0,0,.18);font-variant-numeric:tabular-nums}
.tip b{font-weight:600}.tip i{display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:6px}
.tip .th{opacity:.75;margin-bottom:2px}
.empty{color:var(--muted);padding:24px 0;text-align:center}
.hyp svg{width:100%;height:auto;display:block}

/* tables, chips, bars */
.tablewrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
th,td{text-align:right;padding:7px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
th:first-child,td:first-child{text-align:left}
th{font-size:12px;color:var(--muted);font-weight:500}
tr:last-child td{border-bottom:0}
tr.sel td{background:var(--grid)}
tbody tr.click{cursor:pointer}
tbody tr.click:hover td{background:var(--grid)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);border-radius:999px;padding:3px 10px;font-size:12.5px;color:var(--ink2);background:var(--bg)}
.chip b{color:var(--ink)}
.rings{display:grid;gap:10px}
.ringrow{display:grid;grid-template-columns:90px 1fr 48px;gap:10px;align-items:center;font-size:13px}
.track{height:8px;background:var(--grid);border-radius:4px;overflow:hidden}
.track span{display:block;height:100%;border-radius:4px}
.heat{width:100%;height:auto}
.l0{fill:var(--h0)}.l1{fill:var(--h1)}.l2{fill:var(--h2)}.l3{fill:var(--h3)}.l4{fill:var(--h4)}
.heatleg{display:flex;align-items:center;gap:4px;font-size:11.5px;color:var(--muted);flex-wrap:wrap}
.heatleg i{width:12px;height:12px;border-radius:3px;display:inline-block}
.heatleg .l0{background:var(--h0)}.heatleg .l1{background:var(--h1)}.heatleg .l2{background:var(--h2)}.heatleg .l3{background:var(--h3)}.heatleg .l4{background:var(--h4)}
@media (prefers-reduced-motion:no-preference){.track span{transition:width .4s ease}}

/* forms */
select,input[type="search"]{font:inherit;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;padding:6px 10px;min-width:0;max-width:100%}
.btnrow{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.btn{font-weight:500;border:1px solid var(--line);background:var(--surface);color:var(--ink2);border-radius:8px;padding:6px 12px;cursor:pointer}
.btn:hover{color:var(--ink);background:var(--grid)}
.btn.primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn.primary:hover{opacity:.9}
.btn.danger:hover{color:var(--c-heart)}
.nstats{display:flex;flex-wrap:wrap;gap:6px 20px;font-variant-numeric:tabular-nums;color:var(--ink2)}
.nstats b{color:var(--ink);font-weight:600}
.plan{display:grid;gap:14px;margin:0;padding:0;list-style:none;counter-reset:p}
.plan li{counter-increment:p;display:grid;grid-template-columns:28px 1fr;gap:12px;color:var(--ink2);max-width:80ch}
.plan li::before{content:counter(p);width:26px;height:26px;border-radius:50%;background:var(--ink);color:var(--bg);font-weight:600;display:grid;place-items:center;font-size:13px;margin-top:1px}
.plan b{color:var(--ink)}
.th-note{font-size:12px;color:var(--muted)}

/* landing */
.landing{max-width:860px;margin:0 auto;padding:48px 0 24px;display:grid;gap:22px}
.landing h1{font-size:clamp(34px,6vw,56px)}
.drop{border:2px dashed var(--line);border-radius:14px;background:var(--surface);padding:36px 20px;text-align:center;display:grid;gap:10px;justify-items:center;cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop.over{border-color:var(--c-act);background:color-mix(in srgb,var(--c-act) 6%,var(--surface))}
.drop svg{width:40px;height:40px;color:var(--c-act)}
.drop strong{font-family:var(--f-display);font-size:20px}
.drop span{color:var(--muted)}
.steps3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
@media (max-width:700px){.steps3{grid-template-columns:1fr}}
.steps3 .p b{font-family:var(--f-display);font-size:15px}
.steps3 .p p{margin:0;color:var(--ink2)}
.progress{display:grid;gap:8px}
.pbar{height:10px;background:var(--grid);border-radius:5px;overflow:hidden}
.pbar span{display:block;height:100%;width:0;background:var(--c-act);border-radius:5px;transition:width .2s}
.pinfo{display:flex;justify-content:space-between;color:var(--ink2);font-variant-numeric:tabular-nums;gap:10px;flex-wrap:wrap}
.err{color:var(--c-heart);font-weight:500}
.priv{display:flex;gap:10px;align-items:flex-start;color:var(--ink2)}
.priv svg{flex:none;width:20px;height:20px;color:var(--c-body);margin-top:1px}
footer{max-width:1180px;margin:48px auto 0;color:var(--muted);font-size:12.5px;border-top:1px solid var(--line);padding-top:14px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}