/* Browserheap's site. Near-black with a green cast, white type at a few
   opacities, and one green-to-blue family of colors taken from Radix's dark
   scales: jade for what's alive (our line, live tabs), teal and cyan for the
   rest. Inter at weight 400 for headlines, with letters that flicker into a
   pixel font (alive.js). Dot pictures are drawn by dither.js, shading from
   jade to cyan: things that sleep blur into dots and sharpen when woken. */
:root {
  --bg: #070908;
  --bg-2: #121615;
  --panel: #090b0b;
  --ink: #eef4f1;
  --ink-2: rgb(238 244 241 / 0.7);
  --ink-3: rgb(238 244 241 / 0.5);
  --ink-4: rgb(238 244 241 / 0.2);
  --line: rgb(238 244 241 / 0.1);
  --line-soft: rgb(238 244 241 / 0.04);
  --accent: #1fd8a4;            /* jade 11 */
  --accent-light: #adf0d4;      /* jade 12 */
  --accent-wash: rgb(31 216 164 / 0.08);
  --accent-line: rgb(31 216 164 / 0.32);
  --success: #1fd8a4;
  --success-wash: rgb(31 216 164 / 0.08);
  --success-line: rgb(31 216 164 / 0.3);
  --cyan: #4ccce6;              /* cyan 11 */
  --cyan-wash: rgb(76 204 230 / 0.08);
  --cyan-line: rgb(76 204 230 / 0.32);
  --bubble: #1c6961;            /* teal 7 */

  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "URW Palladio L", serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --font-pixel: "DotGothic16", ui-monospace, monospace;

  --page: 1152px;

  /* What the chart code (charts.js) draws with. */
  --surface: var(--panel);
  --live: var(--accent);
  --live-ink: var(--ink);
  --other: rgb(238 244 241 / 0.3);
  --grid: var(--line-soft);
  --rule: var(--line);
  --bad: var(--ink-3);
  --good: var(--success);
  --sunk: var(--bg);

  color-scheme: dark;
}

* { box-sizing: border-box; }
/* `hidden` wins over any display a class sets. */
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; background: var(--bg); overflow-x: clip; }
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
p a, li a, dd a, .caption a { text-decoration: underline; text-decoration-color: var(--ink-4); text-underline-offset: 4px; }
p a:hover, li a:hover, dd a:hover, .caption a:hover { text-decoration-color: var(--ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
code, pre, kbd { font-family: var(--font-mono); }
p code, li code, td code, dd code { font-size: 0.86em; background: var(--line-soft); border: 1px solid var(--line); padding: 1px 5px; border-radius: 5px; }
[id] { scroll-margin-top: 88px; }

.wrap { max-width: var(--page); margin: 0 auto; padding-inline: 24px; }

/* Top bar */
.bar { position: sticky; top: 0; z-index: 40; border-bottom: 1px solid var(--line); background: rgb(7 9 8 / 0.85); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.bar .wrap { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 70px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 19px; letter-spacing: -0.02em; justify-self: start; }
/* Nine tabs, two of them awake. */
.brand-mark { width: 24px; height: 24px; }
.bar nav { display: flex; gap: 32px; font-size: 14px; font-weight: 500; color: var(--ink-3); }
.bar nav a:hover { color: var(--ink); }
.bar .right { justify-self: end; display: flex; gap: 20px; align-items: center; font-size: 14px; font-weight: 500; }
.bar .right > a:not(.button) { color: var(--ink-3); }
.bar .right > a:not(.button):hover { color: var(--ink); }

/* Type */
h1, h2, h3 { margin: 0; font-weight: 400; text-wrap: balance; }
h1 { font-size: clamp(40px, 4.4vw, 58px); line-height: 1.08; }
h2 { font-size: clamp(30px, 3.4vw, 48px); line-height: 1.1; }
h3 { font-size: 15px; font-weight: 500; line-height: 1.4; }
p { margin: 0; }
.eyebrow { font-size: 14px; color: var(--accent); }
.lede { font-size: 20px; line-height: 1.625; color: var(--ink-2); text-wrap: balance; }
.body { font-size: 18px; line-height: 1.625; color: var(--ink-2); text-wrap: pretty; }
.small { font-size: 13px; line-height: 1.55; color: var(--ink-3); }

/* Buttons */
.actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 20px; border-radius: 10px; border: 1px solid var(--ink); background: var(--ink); color: var(--bg); font: 600 16px/24px var(--font-sans); cursor: pointer; white-space: nowrap; transition: background-color 0.15s, border-color 0.15s, scale 0.15s; }
.button:hover { background: #d9e2dd; border-color: #d9e2dd; }
.button:active { scale: 0.98; }
.button.dark { background: rgb(7 9 8 / 0.25); color: var(--ink); border-color: var(--line); }
.button.dark:hover { border-color: var(--ink-4); background: var(--line-soft); }
.button.small { padding: 8px 16px; font-size: 14px; line-height: 20px; }
.button .arrow { font-weight: 400; }

/* Panels: the dark app windows the page shows things in. */
.panel { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; min-width: 0; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 16px; border-bottom: 1px solid var(--line); font-size: 13px; color: var(--ink-2); min-height: 45px; }
.panel-head .title { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); font-weight: 500; }
.panel-body { padding: 16px; }
.chip { display: inline-flex; align-items: center; gap: 5px; height: 22px; padding: 0 8px; border-radius: 6px; font-size: 12px; white-space: nowrap; }
.chip.ok { color: var(--success); background: var(--success-wash); border: 1px solid var(--success-line); }
.chip.cyan { color: var(--cyan); background: var(--cyan-wash); border: 1px solid var(--cyan-line); }
.chip.plain { color: var(--ink-3); border: 1px solid var(--line); }
.segmented { display: inline-flex; gap: 2px; padding: 2px; border-radius: 8px; border: 1px solid var(--line); }
.segmented button { height: 26px; padding: 0 10px; border: 0; border-radius: 6px; background: transparent; color: var(--ink-3); font: 500 12.5px var(--font-sans); cursor: pointer; }
.segmented button:hover { color: var(--ink); }
.segmented button[aria-selected="true"] { background: var(--line); color: var(--ink); }

pre.code { margin: 0; color: var(--ink-2); padding: 16px 18px; font-size: 13px; line-height: 1.7; overflow-x: auto; min-width: 0; }
pre.code .c { color: var(--ink-3); }
pre.code .s { color: var(--accent-light); }
pre.code .k { color: var(--cyan); }
pre.code .p { color: var(--ink-3); user-select: none; }

/* Dither pictures (dither.js) */
canvas.dither { display: block; width: 100%; height: 100%; image-rendering: pixelated; pointer-events: none; }
/* Pixel-stepped fade from content into the page (dither.js fills it). */
.dither-fade { position: absolute; left: 0; right: 0; display: grid; pointer-events: none; z-index: 2; }
.dither-fade i { display: block; height: 16px; background: var(--bg); -webkit-mask-size: 4px 4px; mask-size: 4px 4px; image-rendering: pixelated; }

/* Glitch headlines (alive.js). Every letter is its own box, always, so its
   width never depends on its neighbors. The Inter letter holds the layout; a
   glitching one turns transparent and its pixel twin is drawn over it,
   positioned absolutely, so it can never shift a line. */
.glitch .word { white-space: nowrap; }
.glitch .ch { position: relative; display: inline-block; white-space: pre; }
.glitch .ch.px { color: transparent; }
.glitch .ch.px::after { content: attr(data-ch); position: absolute; left: 50%; top: 50%; transform: translate(-50%, -52%); color: var(--ink); font-family: var(--font-pixel); font-weight: 400; line-height: 1; pointer-events: none; }

/* Charts */
.chart-wrap { position: relative; min-width: 0; }
svg.chart { display: block; width: 100%; height: auto; overflow: visible; }
svg.chart text { font-family: var(--font-mono); font-size: 11px; fill: var(--ink-3); }
svg.chart .end { font-family: var(--font-sans); font-size: 12.5px; fill: var(--ink-2); }
svg.chart .end.ours { fill: var(--ink); font-weight: 600; }
svg.chart .bar-label { font-family: var(--font-sans); font-size: 13.5px; fill: var(--ink-2); }
svg.chart .bar-label.ours { fill: var(--ink); font-weight: 600; }
svg.chart .bar-value { font-size: 12px; fill: var(--ink-2); }
svg.chart .bar-value.ours { fill: var(--ink); font-weight: 600; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 12px; color: var(--ink-3); margin: 0; padding: 0; list-style: none; }
.legend li { display: inline-flex; align-items: center; gap: 6px; }
.legend .key { width: 8px; height: 8px; border-radius: 2px; background: var(--other); }
.legend .key.ours { background: var(--accent); }
.legend .key.dash { background: transparent; border: 1px dashed var(--other); }
.tooltip { position: absolute; pointer-events: none; background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font-size: 12.5px; min-width: 230px; z-index: 3; box-shadow: 0 12px 32px rgb(0 0 0 / 0.5); }
.tooltip .t-head { font-weight: 600; margin-bottom: 6px; }
.tooltip .t-site { color: var(--ink-3); font-family: var(--font-mono); font-size: 11px; display: block; font-weight: 400; }
.tooltip .t-row { display: grid; grid-template-columns: 10px 1fr auto; gap: 8px; align-items: center; color: var(--ink-2); }
.tooltip .t-row .dot { width: 8px; height: 8px; border-radius: 2px; background: var(--other); }
.tooltip .t-row.ours { color: var(--ink); font-weight: 600; }
.tooltip .t-row.ours .dot { background: var(--accent); }
.tooltip .v { font-family: var(--font-mono); font-variant-numeric: tabular-nums; text-align: right; }
.caption { font-size: 13px; color: var(--ink-3); margin: 0; }

/* Tables */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); min-width: 0; }
.table-scroll.tall { max-height: 560px; }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { padding: 9px 14px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--line); }
th { position: sticky; top: 0; background: var(--panel); font-weight: 500; color: var(--ink-3); font-size: 12.5px; z-index: 1; }
td { font-size: 13px; font-variant-numeric: tabular-nums; color: var(--ink-2); }
th.left, td.left { text-align: left; }
th.center, td.center { text-align: center; }
td.text { font-size: 13.5px; white-space: normal; min-width: 200px; }
td.ours, th.ours { background: var(--accent-wash); color: var(--ink); font-weight: 600; }
td.blocked { color: var(--ink-3); }
td.blocked::after { content: "†"; margin-left: 2px; }
tr.summary td { border-top: 1px solid var(--ink-4); color: var(--ink); }
tr:last-child td { border-bottom: 0; }
.mark { font-size: 13px; font-weight: 500; }
.mark.yes { color: var(--success); }
.mark.no { color: var(--ink-3); font-weight: 400; }

/* Footer */
.foot { border-top: 1px solid var(--line); }
.foot-top { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 32px; padding-block: 64px 48px; }
.foot-about { display: grid; gap: 14px; align-content: start; max-width: 300px; }
.foot-about p { font-size: 14px; color: var(--ink-3); line-height: 1.6; }
.foot-col { display: grid; gap: 12px; align-content: start; font-size: 14px; }
.foot-col h3 { font-size: 14px; font-weight: 600; color: var(--ink-2); margin-bottom: 4px; }
.foot-col a { color: var(--ink-3); }
.foot-col a:hover { color: var(--ink); }
/* The heap at the end of the page: tabs sleeping as dots, two awake (heap.js).
   It fades out at the edges and under the copy so the words stay readable. */
.heap { position: absolute; inset: 0; display: flex; flex-wrap: wrap; align-content: center; justify-content: center; gap: 8px; padding: 8px; overflow: hidden;
  mask-image: radial-gradient(ellipse 34% 30% at 50% 50%, rgb(0 0 0 / 0.18), #000 100%), linear-gradient(to bottom, transparent, #000 18%, #000 82%, transparent); mask-composite: intersect; }
.heap-count { font: 12.5px var(--font-mono); color: var(--ink-3); }
.heap-count b { font-weight: 500; color: var(--accent); }
.heap-count span { margin-left: 12px; color: var(--ink-4); }
.heap-tab { --dot: color-mix(in oklab, var(--accent) calc((1 - var(--x, 0)) * 100%), var(--cyan)); position: relative; height: 34px; padding: 0 14px 0 32px; border-radius: 9px; font: 13.5px/34px var(--font-sans); white-space: nowrap; color: transparent; cursor: default; transition: color 0.4s, background-color 0.4s, box-shadow 0.4s; }
/* Asleep: only dots, the title kept for the tab's width. */
.heap-tab::before { content: ""; position: absolute; inset: 0; border-radius: inherit; background: radial-gradient(var(--dot) 0.8px, transparent 1.15px) 0 0 / 3px 3px; opacity: 0.55; transition: opacity 0.4s; }
/* Awake: a real tab, with its favicon and title. */
.heap-tab::after { content: ""; position: absolute; left: 12px; top: 12px; width: 10px; height: 10px; border-radius: 3px; background: var(--dot); opacity: 0; transition: opacity 0.4s; }
.heap-tab.awake { color: var(--ink); background-color: var(--bg-2); box-shadow: inset 0 0 0 1px var(--accent-line), 0 0 30px var(--accent-wash); }
.heap-tab.awake::before { opacity: 0; }
.heap-tab.awake::after { opacity: 1; }

@media (max-width: 900px) {
  .bar .wrap { grid-template-columns: 1fr auto; }
  .bar nav { display: none; }
  .foot-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .wrap { padding-inline: 16px; }
  .bar .right > a:not(.button) { display: none; }
  .lede { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}