Atlas storage treemap

<!-- Original layout, SVG/CSS artwork and JavaScript © 2026 XXC Templates. MIT License.
Illustrative sample content and data; no real accounts, purchases or bookings. -->
<main>
  <header class="intro">
    <div>
      <div class="kicker">DATA STORIES / SAMPLE DATA</div>
      <h1>Atlas storage treemap</h1>
      <p>
        An area-proportional treemap for workspace storage. Select a folder to inspect its
        contribution; switch between two storage snapshots.
      </p>
    </div>
    <span class="badge">INTERACTIVE SVG</span>
  </header>
  <section class="panel">
    <div class="chart-summary">
      <strong id="total">100 GB</strong><span>Workspace storage</span>
    </div>
    <div id="treemap" class="treemap" role="group" aria-label="Storage treemap"></div>
    <div class="toolbar">
      <button id="change">Show after cleanup</button><span class="badge">AREA = STORAGE SIZE</span>
    </div>
    <output id="status" class="status" aria-live="polite"></output>
    <details class="data-table">
      <summary>View data table</summary>
      <div class="table-scroll"><table id="data-table"></table></div>
    </details>
  </section>
  <footer>Illustrative data · no external services · keyboard-accessible controls</footer>
</main>

:root {
  --bg: #edf2f8;
  --panel: #ffffff;
  --text: #182b46;
  --muted: #53677e;
  --line: #d5e0ee;
  --accent: #285db0;
}
/* Original XXC Templates Studio collection. MIT; sample data only. */
* {
  box-sizing: border-box;
}
html {
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}
body {
  margin: 0;
  background: var(--bg);
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  font:
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    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  padding: clamp(18px, 4vw, 40px);
  min-height: 100vh;
}
h1,
h2,
h3,
p {
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h1 {
  font-size: clamp(27px, 4.8vw, 46px);
  line-height: 1.07;
  letter-spacing: -0.055em;
  font-weight: 650;
}
h2 {
  font-size: 22px;
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}
h3 {
  font-size: 15px;
}
p {
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}
button,
input,
select {
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}
button,
a,
input,
select,
summary {
  touch-action: manipulation;
}
button {
  cursor: pointer;
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  border: 1px solid var(--line);
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button:hover {
  border-color: var(--accent);
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button[aria-pressed="true"],
button.active {
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button:disabled {
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button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}
a {
  color: inherit;
  text-underline-offset: 4px;
}
input,
select {
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  color: var(--text);
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input[type="range"] {
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input[type="checkbox"] {
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label {
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svg {
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img {
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main {
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.intro {
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  font:
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}
.panel {
  background: var(--panel);
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  padding: 22px;
  min-width: 0;
}
.toolbar {
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  gap: 9px;
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.primary {
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.grid {
  display: grid;
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.muted {
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.metric {
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footer,
.footnote {
  font-size: 10px;
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[hidden] {
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.data-table {
  margin-top: 16px;
  font-size: 11px;
  color: var(--muted);
}
.data-table summary {
  cursor: pointer;
}
.table-scroll {
  overflow: auto;
  max-width: 100%;
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table {
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caption {
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.legend {
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.legend i {
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dialog {
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dialog::backdrop {
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dialog p {
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.media-credit {
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.stage {
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  border: 1px solid var(--line);
  background: var(--panel);
}
@media (max-width: 520px) {
  .intro {
    align-items: flex-start;
    flex-direction: column;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .panel {
    padding: 17px;
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  h1 {
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}
@media (prefers-reduced-motion: reduce) {
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}
html {
  color-scheme: light;
}
#chart {
  width: 100%;
  height: auto;
  overflow: visible;
}
#chart text {
  font-family: system-ui, sans-serif;
  fill: var(--muted);
  font-size: 11px;
}
.chart-summary {
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  margin-bottom: 15px;
}
.chart-summary strong {
  font-size: 33px;
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}
.chart-summary span {
  font-size: 11px;
  color: var(--muted);
}
.treemap {
  height: 240px;
  display: flex;
  gap: 4px;
}
.tree-column {
  display: flex;
  flex-direction: column;
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  min-width: 0;
}
.tile {
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  border-radius: 8px;
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  display: flex;
  justify-content: center;
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  color: #0c2331;
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  overflow: hidden;
}
.tile b {
  font-size: clamp(12px, 2.3vw, 22px);
}
.tile span {
  font-size: 11px;
}
@media (max-width: 430px) {
  .tile {
    padding: 8px;
  }
  .tile span {
    font-size: 9px;
  }
}

(() => {
  "use strict";
  const $ = (s) => document.querySelector(s),
    $$ = (s) => [...document.querySelectorAll(s)],
    status = (t) => {
      const el = $("#status");
      if (el) el.textContent = t;
    },
    clamp = (n, a, b) => Math.max(a, Math.min(b, n));
  const reduced = matchMedia("(prefers-reduced-motion: reduce)").matches;
  const ns = "http://www.w3.org/2000/svg";
  function svg(tag, attrs = {}, text) {
    const el = document.createElementNS(ns, tag);
    for (const [k, v] of Object.entries(attrs)) el.setAttribute(k, String(v));
    if (text !== undefined) el.textContent = text;
    return el;
  }
  function table(headers, rows) {
    const t = $("#data-table");
    if (!t) return;
    t.replaceChildren();
    const caption = document.createElement("caption");
    caption.textContent = "Illustrative sample data";
    t.append(caption);
    const head = t.createTHead().insertRow();
    headers.forEach((v) => {
      const th = document.createElement("th");
      th.scope = "col";
      th.textContent = v;
      head.append(th);
    });
    const body = t.createTBody();
    rows.forEach((row) => {
      const r = body.insertRow();
      row.forEach((v) => (r.insertCell().textContent = String(v)));
    });
  }
  function selectButtons(selector, callback) {
    $$(selector).forEach((b) =>
      b.addEventListener("click", () => {
        $$(selector).forEach((x) => x.setAttribute("aria-pressed", String(x === b)));
        callback(b);
      }),
    );
  }

  const colors = ["#82b6ff", "#72dbc2", "#c5a4ff", "#f7bf7c", "#fa92b8", "#acd884"];
  const names = ["Design", "Media", "Research", "Documents", "Archives", "Other"];
  let clean = false;
  function draw() {
    const values = clean ? [28, 17, 13, 10, 6, 6] : [35, 25, 15, 10, 8, 7],
      groups = [
        [0, 1],
        [2, 3],
        [4, 5],
      ],
      total = values.reduce((a, b) => a + b);
    $("#treemap").replaceChildren();
    groups.forEach((group) => {
      const col = document.createElement("div");
      col.className = "tree-column";
      col.style.flex = group.reduce((n, i) => n + values[i], 0);
      group.forEach((i) => {
        const tile = document.createElement("button");
        tile.className = "tile";
        tile.style.background = colors[i];
        tile.style.flex = values[i];
        const b = document.createElement("b");
        b.textContent = names[i];
        const label = document.createElement("span");
        label.textContent = values[i] + " GB · " + ((values[i] / total) * 100).toFixed(1) + "%";
        tile.append(b, label);
        tile.addEventListener("click", () =>
          status(names[i] + " uses " + values[i] + " of " + total + " GB."),
        );
        col.append(tile);
      });
      $("#treemap").append(col);
    });
    $("#total").textContent = total + " GB";
    table(
      ["Folder", "Storage (GB)", "Share"],
      names.map((name, i) => [name, values[i], ((values[i] / total) * 100).toFixed(1) + "%"]),
    );
  }
  $("#change").addEventListener("click", () => {
    clean = !clean;
    draw();
    status(clean ? "After cleanup: 80 GB, 20 GB recovered." : "Original snapshot: 100 GB used.");
  });
  draw();
})();