/* woah...llama - palette per the dataviz reference instance (validated) */
:root {
  color-scheme: light;
  --surface-0: #f6f6f4;
  --surface-1: #fcfcfb;
  --surface-2: #eeeeea;
  --border:    #dcdcd5;
  --text-primary:   #0b0b0b;
  --text-secondary: #52514e;
  --text-muted:     #86857e;
  --series-1: #2a78d6;  --series-2: #eb6834;  --series-3: #1baf7a;
  --series-4: #eda100;  --series-5: #e87ba4;  --series-6: #008300;
  --series-7: #4a3aa7;  --series-8: #e34948;
  --decoy: #86857e;
  --grid: #e6e6e0;
  --seq-0: #eeeeea; --seq-1: #dce9f8; --seq-2: #b6d2f0; --seq-3: #8ab6e6;
  --seq-4: #5b95d8; --seq-5: #2a78d6; --seq-6: #17539c;
  --div-lo3: #1f6cc4; --div-lo2: #62a3e6; --div-lo1: #bcdbf5;
  --div-mid: #cfcfc6;
  --div-hi1: #f2b9dc; --div-hi2: #db4fa0; --div-hi3: #a81271;
  --land: #f2f2ee; --coast: #d6d6ce;
  --map-blue: #0a9fb0; --map-pink: #e10d86;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --surface-0: #121211; --surface-1: #1a1a19; --surface-2: #232322;
    --border: #35352f;
    --text-primary: #ffffff; --text-secondary: #c3c2b7; --text-muted: #8a897f;
    --series-1: #3987e5;  --series-2: #d95926;  --series-3: #199e70;
    --series-4: #c98500;  --series-5: #d55181;  --series-6: #008300;
    --series-7: #9085e9;  --series-8: #e66767;
    --decoy: #8a897f;
    --grid: #2b2b27;
    --seq-0: #232322; --seq-1: #17304f; --seq-2: #1d4676; --seq-3: #275f9e;
    --seq-4: #3179c8; --seq-5: #4e97e0; --seq-6: #7cb6ef;
    --div-lo3: #7cb6ef; --div-lo2: #3179c8; --div-lo1: #1d3f66;
    --div-mid: #6a6a60;
    --div-hi1: #5e2247; --div-hi2: #c0508f; --div-hi3: #f07cc0;
    --land: #1d1d1c; --coast: #33332d;
  --map-blue: #1fc7d4; --map-pink: #ff3fa8;
    --map-blue: #1fc7d4; --map-pink: #ff3fa8;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --surface-0: #121211; --surface-1: #1a1a19; --surface-2: #232322;
  --border: #35352f;
  --text-primary: #ffffff; --text-secondary: #c3c2b7; --text-muted: #8a897f;
  --series-1: #3987e5;  --series-2: #d95926;  --series-3: #199e70;
  --series-4: #c98500;  --series-5: #d55181;  --series-6: #008300;
  --series-7: #9085e9;  --series-8: #e66767;
  --decoy: #8a897f;
  --grid: #2b2b27;
  --seq-0: #232322; --seq-1: #17304f; --seq-2: #1d4676; --seq-3: #275f9e;
  --seq-4: #3179c8; --seq-5: #4e97e0; --seq-6: #7cb6ef;
  --div-lo3: #7cb6ef; --div-lo2: #3179c8; --div-lo1: #1d3f66;
  --div-mid: #6a6a60;
  --div-hi1: #5e2247; --div-hi2: #c0508f; --div-hi3: #f07cc0;
  --land: #1d1d1c; --coast: #33332d;
  --map-blue: #1fc7d4; --map-pink: #ff3fa8;
}

* { box-sizing: border-box; }
html { overflow-x: hidden; }
code { background: var(--surface-2); color: var(--series-3);
  padding: 0.5px 5px; border-radius: 4px; font-size: 0.88em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  overflow-wrap: anywhere; }
body {
  margin: 0; background: var(--surface-0); color: var(--text-primary);
  font: 14px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px 96px; }
header { padding: 56px 0 28px; border-bottom: 1px solid var(--border); margin-bottom: 32px; }
h1 { font-size: 40px; letter-spacing: -0.03em; margin: 0 0 6px; font-weight: 650; }
h1 .dim { color: var(--text-muted); font-weight: 400; }
.sub { color: var(--text-secondary); max-width: 68ch; margin: 0; }
.byline { color: var(--text-muted); font-size: 12.5px; margin: 8px 0 0; }
h2 { font-size: 19px; letter-spacing: -0.01em; margin: 0 0 4px; font-weight: 620; }
.note { color: var(--text-secondary); font-size: 13px; margin: 0 0 16px; max-width: 76ch; }
section { margin: 44px 0 0; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px; background: var(--border); border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden; margin: 28px 0 0; }
.stat { background: var(--surface-1); padding: 16px 18px; }
.stat .v { font: 620 26px/1.15 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: -0.02em; }
.stat .k { color: var(--text-secondary); font-size: 12px; margin-top: 3px; }
.stat .k b { color: var(--text-primary); font-weight: 600; }

.card { background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 10px; padding: 18px 18px 12px; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin-bottom: 14px; }
button, select {
  font: inherit; font-size: 13px; color: var(--text-primary);
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 11px; cursor: pointer;
  max-width: 100%; min-width: 0;
}
#model-pick { flex: 1 1 200px; }
button[aria-pressed="true"] { background: var(--text-primary); color: var(--surface-1);
  border-color: var(--text-primary); }
button:hover, select:hover { border-color: var(--text-muted); }
.spacer { flex: 1; }

.legend { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 12px 0 2px;
  font-size: 12.5px; color: var(--text-secondary); }
.legend span { display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  -webkit-user-select: none; user-select: none; }
.legend i { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.legend .off { opacity: .35; }
.legend span.active { color: var(--text-primary); font-weight: 600; }

svg { display: block; width: 100%; overflow: visible; }
canvas { display: block; width: 100%; }
.grid line { stroke: var(--grid); stroke-width: 1; }
.axis text { fill: var(--text-muted); font-size: 11px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.axis line { stroke: var(--border); }
.ser { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.cursor { stroke: var(--text-muted); stroke-width: 1; stroke-dasharray: 3 3; }

.tip { position: fixed; pointer-events: none; z-index: 20; opacity: 0;
  transition: opacity .08s; background: var(--surface-1); color: var(--text-primary);
  border: 1px solid var(--border); border-radius: 8px; padding: 9px 11px;
  font-size: 12.5px; box-shadow: 0 6px 24px rgba(0,0,0,.16); max-width: 300px; }
.tip .d { color: var(--text-muted); font-family: ui-monospace, Menlo, monospace;
  font-size: 11px; margin-bottom: 5px; }
.tip table { border-spacing: 0; }
.tip td { padding: 1px 0; }
.tip td.n { text-align: right; padding-left: 12px;
  font-family: ui-monospace, Menlo, monospace; }
.tip i { width: 9px; height: 9px; border-radius: 2px; display: inline-block;
  margin-right: 6px; }

.player { display: flex; align-items: center; gap: 12px; margin-top: 10px; }
.player input[type=range] { flex: 1; accent-color: var(--series-1); }
.player .date { font: 13px ui-monospace, Menlo, monospace; color: var(--text-secondary);
  min-width: 96px; }

table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th { text-align: left; color: var(--text-secondary); font-weight: 550;
  border-bottom: 1px solid var(--border); padding: 7px 10px 7px 0; font-size: 12px; }
table.data td { padding: 6px 10px 6px 0; border-bottom: 1px solid var(--surface-2); }
table.data td.n { text-align: right; font-family: ui-monospace, Menlo, monospace; }
table.data a { color: var(--series-1); text-decoration: none; }
table.data a:hover { text-decoration: underline; }

.flag { display: inline-block; padding: 1px 7px; border-radius: 999px;
  font-size: 11px; background: var(--surface-2); color: var(--text-secondary); }
footer { margin-top: 64px; padding-top: 20px; border-top: 1px solid var(--border);
  color: var(--text-muted); font-size: 12.5px; }
footer a { color: var(--text-secondary); }
.scroll { overflow-x: auto; }

.map-wrap { position: relative; z-index: 0; }
/* svg{overflow:visible} is right for chart labels but lets Antarctica paint
   over the controls below the map */
.map-wrap svg { overflow: hidden; }
.map-wrap path { stroke: var(--coast); stroke-width: .5; }
.map-wrap path:hover { stroke: var(--text-primary); stroke-width: 1.2; }
.ramp { display: flex; align-items: center; gap: 8px; font-size: 12px;
  color: var(--text-secondary); margin-top: 8px; flex-wrap: wrap; }
.ramp i { width: 26px; height: 11px; display: inline-block; border-radius: 2px; }
.ramp .b { display: inline-flex; align-items: center; gap: 5px; }

pre { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 14px; overflow-x: auto; font: 12.5px/1.7 ui-monospace, Menlo, monospace;
  color: var(--text-primary); margin: 0 0 14px; }
.bar { height: 18px; border-radius: 4px; display: block; }
.barrow td { vertical-align: middle; }

.chapter { margin: 76px 0 8px; padding-top: 40px; border-top: 2px solid var(--text-primary); }
.chapter:first-of-type { border-top: none; padding-top: 0; margin-top: 8px; }
.chapter-num { font: 600 12px ui-monospace, Menlo, monospace; letter-spacing: .08em;
  text-transform: uppercase; color: var(--series-1); margin-bottom: 8px; }
.chapter-title { font-size: 30px; letter-spacing: -0.02em; margin: 0 0 12px; font-weight: 640; }
.chapter-lede { color: var(--text-secondary); max-width: 74ch; margin: .5rem 0; font-size: 15px; line-height: 1.6; }

/* metric pills (map) */
.pills { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.pill { font: inherit; font-size: 12.5px; color: var(--text-secondary);
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 999px; padding: 5px 12px; cursor: pointer; white-space: nowrap;
  -webkit-user-select: none; user-select: none; }
.pill:hover { border-color: var(--text-muted); color: var(--text-primary); }
.pill[aria-pressed="true"] { background: var(--text-primary); color: var(--surface-1);
  border-color: var(--text-primary); }

/* keep long unbroken strings (URLs, model ids) from forcing width */
table.data td code, .tip code { overflow-wrap: anywhere; word-break: break-word; }
#pop, #vendors, #models, #geo, #sizes, #quants, #composition, #survey,
#ports, #versions, #template { max-width: 100%; }

/* phones */
@media (max-width: 640px) {
  .wrap { padding: 0 14px 64px; }
  header { padding: 36px 0 20px; }
  h1 { font-size: 32px; }
  .chapter { margin-top: 52px; padding-top: 30px; }
  .chapter-title { font-size: 24px; }
  .card { padding: 14px 12px 10px; }
  section { margin-top: 34px; }
  .stat .v { font-size: 22px; }
}

.zoombtns { position: absolute; top: 10px; right: 10px; display: flex;
  flex-direction: column; gap: 4px; z-index: 3; }
.zoombtns button { width: 30px; height: 30px; font-size: 18px; line-height: 1;
  padding: 0; display: flex; align-items: center; justify-content: center;
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text-primary); cursor: pointer;
  -webkit-user-select: none; user-select: none; }
.zoombtns button:hover { border-color: var(--text-muted); }

.rampline { display: flex; align-items: center; gap: 12px 16px; margin-top: 10px; flex-wrap: wrap; }
.rampline .ramp { margin-top: 0; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.seg button { font: inherit; font-size: 12.5px; padding: 5px 13px; cursor: pointer;
  background: var(--surface-2); color: var(--text-secondary); border: none;
  border-right: 1px solid var(--border); -webkit-user-select: none; user-select: none; }
.seg button:last-child { border-right: none; }
.seg button[aria-pressed="true"] { background: var(--text-primary); color: var(--surface-1); }

/* ---------------------------------------------------- section outline nav */
html { scroll-behavior: smooth; }
section, .chapter { scroll-margin-top: 18px; }
.navtoggle {
  position: fixed; top: 14px; left: 14px; z-index: 50;
  width: 40px; height: 40px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface-1); cursor: pointer; display: flex;
  align-items: center; justify-content: center; box-shadow: 0 2px 10px rgba(0,0,0,.12);
}
.navtoggle span, .navtoggle span::before, .navtoggle span::after {
  content: ''; display: block; width: 18px; height: 2px; background: var(--text-primary);
}
.navtoggle span { position: relative; }
.navtoggle span::before { position: absolute; top: -6px; }
.navtoggle span::after  { position: absolute; top: 6px; }
.sidenav {
  position: fixed; top: 0; left: 0; width: 236px; height: 100vh; overflow-y: auto;
  box-sizing: border-box; padding: 26px 14px 48px; z-index: 49;
  background: transparent;
  transform: translateX(-100%); transition: transform .2s ease; font-size: 12.5px;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 18px, #000 calc(100% - 24px), transparent);
          mask-image: linear-gradient(to bottom, transparent, #000 18px, #000 calc(100% - 24px), transparent);
}
.sidenav.open { transform: none; }
.sidenav .nav-title {
  font-weight: 600; font-size: 13px; margin: 0 10px 14px; letter-spacing: -.01em;
}
.sidenav .chap {
  font-size: 10px; text-transform: uppercase; letter-spacing: .07em;
  color: var(--text-muted); margin: 20px 10px 6px;
}
.sidenav a {
  display: block; padding: 4px 10px; line-height: 1.4;
  color: var(--text-muted); text-decoration: none;
  border-left: 2px solid transparent; transition: color .12s, border-color .12s;
}
.sidenav a:hover { color: var(--text-primary); }
.sidenav a.active {
  color: var(--text-primary); border-left-color: var(--series-2); font-weight: 500;
}
/* the drawer needs a surface only when it slides over content on mobile */
@media (max-width: 1099px) {
  .sidenav {
    background: var(--surface-0); box-shadow: 3px 0 24px rgba(0,0,0,.18);
    -webkit-mask-image: none; mask-image: none;
  }
}
.navscrim {
  position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 48;
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
.navscrim.open { opacity: 1; pointer-events: auto; }
@media (min-width: 1100px) {
  .navtoggle, .navscrim { display: none; }
  .sidenav { transform: none; }
  body { padding-left: 232px; }
}
.sidenav a.sub { padding-left: 22px; font-size: 12px; color: var(--text-muted); }
.sidenav a.sub:hover { color: var(--text-primary); }
.sidenav a.sub.active { color: var(--text-primary); }