Pastecraft — code paste desk

<!-- Original layout, SVG/CSS artwork and JavaScript © 2026 XXC Templates. MIT License.
Visual pattern references (original code, names and content; no affiliation):
Pastebin: https://pastebin.com/
A utility-oriented text editor with metadata controls and a secondary paste index.
Illustrative sample content and data; no real accounts, payments, reservations or messages. -->
<main>
  <header>
    <b>pastecraft<span>▧</span></b>
    <nav><a href="#editor">New paste</a><a href="#recent">Recent examples</a></nav>
  </header>
  <div class="paste-layout">
    <section>
      <h1>New paste</h1>
      <p class="lead">A small piece of code, ready for a second pair of eyes.</p>
      <label for="title"
        >Paste title<input id="title" maxlength="80" value="A tiny greeting function" /></label
      ><label for="source">Source code</label
      ><textarea id="source" spellcheck="false" maxlength="12000">
function greet(name) {
  return "Hello, " + name;
}

greet("curious human");</textarea>
      <div class="controls">
        <label
          >Syntax<select id="syntax">
            <option>JavaScript</option>
            <option>Plain text</option>
          </select></label
        ><button id="change">Render preview</button>
      </div>
      <section id="rendered" hidden>
        <h2 id="preview-title"></h2>
        <pre id="code"></pre>
      </section>
    </section>
    <aside id="recent">
      <h2>PUBLIC EXAMPLES</h2>
      <div><b>CSS reset notes</b><span>CSS / 4 min</span></div>
      <div><b>Small fetch wrapper</b><span>JavaScript / 12 min</span></div>
      <div><b>Morning checklist</b><span>Text / 28 min</span></div>
      <div><b>Grid layout sketch</b><span>CSS / 1 hour</span></div>
      <p>These are fictional examples. The editor preview is local and does not publish a paste.</p>
    </aside>
  </div>
  <output data-status aria-live="polite"></output>
  <footer class="demo-note">Fictional brand · local interface demo · no information is sent</footer>
</main>

* {
  box-sizing: border-box;
}
html {
  scrollbar-gutter: stable;
}
body {
  margin: 0;
  font:
    14px/1.5 Arial,
    Helvetica,
    sans-serif;
  background: #fff;
  color: #202622;
}
h1,
h2,
h3,
p,
figure {
  margin: 0;
}
main,
section,
article,
aside,
header,
nav {
  min-width: 0;
}
button,
input,
select,
textarea {
  font: inherit;
  max-width: 100%;
  min-width: 0;
}
button,
a,
input,
select,
summary {
  touch-action: manipulation;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
}
img {
  display: block;
  max-width: 100%;
  object-fit: cover;
}
svg {
  display: block;
  max-width: 100%;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #2781da;
  outline-offset: 3px;
}
[hidden] {
  display: none !important;
}
[data-status] {
  display: block;
  min-height: 24px;
  font-size: 12px;
  margin-top: 14px;
}
.demo-note {
  font:
    9px/1.6 ui-monospace,
    monospace;
  padding: 16px 0;
  opacity: 0.75;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}
dialog {
  max-width: calc(100vw - 32px);
  width: 480px;
  border: 1px solid #666;
  padding: 25px;
  background: #fff;
  color: #202622;
}
dialog::backdrop {
  background: #0008;
}
dialog h2 {
  margin-bottom: 15px;
}
dialog p {
  margin: 12px 0;
}
dialog button {
  margin-top: 16px;
}
@media (prefers-reduced-motion: reduce) {
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}
body {
  background: #e9edf2;
  color: #425163;
}
main {
  max-width: 1100px;
  margin: 20px auto;
  background: #fff;
  border: 1px solid #c9d4df;
  padding: 0 25px 20px;
}
header {
  display: flex;
  align-items: center;
  gap: 35px;
  border-bottom: 3px solid #5782a5;
  padding: 20px 0;
}
header > b {
  font: 26px Arial;
  letter-spacing: -1px;
  color: #3c6a8d;
}
header b span {
  font-size: 23px;
  margin-left: 6px;
  color: #9db7cd;
}
nav {
  display: flex;
  gap: 20px;
  font-size: 10px;
  color: #7e97ae;
}
nav a {
  text-decoration: none;
}
.paste-layout {
  display: grid;
  grid-template-columns: 1fr 170px;
  gap: 30px;
  margin-top: 25px;
}
h1 {
  font-size: 24px;
  color: #355f7f;
}
.lead {
  font-size: 10px;
  color: #94a6b4;
  margin: 8px 0 20px;
}
label {
  display: block;
  font-size: 9px;
  color: #7f94a5;
  margin: 12px 0 6px;
}
input {
  display: block;
  width: 100%;
  border: 1px solid #c5d3dd;
  padding: 8px;
  margin-top: 6px;
  color: #607e95;
  font-size: 11px;
}
textarea {
  width: 100%;
  height: 175px;
  border: 1px solid #becedb;
  background: #f8fafc;
  padding: 15px;
  font: 11px/1.8 monospace;
  color: #4f6a83;
  resize: vertical;
}
.controls {
  display: flex;
  gap: 20px;
  align-items: end;
}
.controls label {
  margin: 0;
}
.controls select {
  display: block;
  background: white;
  border: 1px solid #c5d3dd;
  color: #648097;
  font-size: 10px;
  padding: 6px;
  margin-top: 6px;
}
button {
  background: #3c779f;
  color: white;
  border: 0;
  padding: 9px 16px;
  font-size: 10px;
}
aside {
  border-left: 1px solid #dae3ea;
  padding-left: 20px;
}
aside h2 {
  font-size: 9px;
  color: #829aad;
  letter-spacing: 1px;
  margin: 4px 0 15px;
}
aside > div {
  border-bottom: 1px solid #e1e8ed;
  padding: 13px 0;
}
aside b {
  font-size: 10px;
  font-weight: normal;
  color: #6a8daa;
}
aside span {
  display: block;
  font-size: 8px;
  color: #a7b6c2;
  margin-top: 5px;
}
aside > p {
  font-size: 9px;
  line-height: 1.8;
  color: #a2b3bf;
  margin-top: 20px;
}
#rendered {
  margin-top: 20px;
}
#rendered h2 {
  font-size: 13px;
}
pre {
  font: 11px/1.8 monospace;
  background: #f3f6f9;
  padding: 13px;
  border: 1px solid #d1dce5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.code-line {
  display: block;
}
.line-number {
  display: inline-block;
  width: 25px;
  color: #a6b8c7;
  user-select: none;
}
.keyword {
  color: #91668f;
  font-weight: bold;
}
@media (max-width: 540px) {
  main {
    margin: 0;
    border: 0;
    padding: 0 20px 20px;
  }
  header {
    gap: 25px;
  }
  nav {
    font-size: 9px;
    gap: 12px;
  }
  .paste-layout {
    grid-template-columns: 1fr;
  }
  aside {
    border-left: 0;
    border-top: 1px solid #dae3ea;
    padding: 20px 0 0;
  }
  aside > div {
    display: inline-block;
    width: 48%;
    vertical-align: top;
  }
}

(() => {
  "use strict";
  const $ = (s) => document.querySelector(s),
    $$ = (s) => [...document.querySelectorAll(s)];
  const status = (text) => {
    const el = $("[data-status]");
    if (el) el.textContent = text;
  };
  const escapeText = (s) =>
    String(s).replaceAll("&", "&amp;").replaceAll("<", "&lt;").replaceAll(">", "&gt;");
  function choose(selector, fn) {
    $$(selector).forEach((b) =>
      b.addEventListener("click", () => {
        $$(selector).forEach((x) => x.setAttribute("aria-pressed", String(x === b)));
        fn(b);
      }),
    );
  }
  function filter(selector, items, key) {
    choose(selector, (b) => {
      $$(items).forEach(
        (el) => (el.hidden = b.dataset[key] !== "all" && el.dataset.kind !== b.dataset[key]),
      );
      status($$(items).filter((el) => !el.hidden).length + " results shown.");
    });
  }
  function textList(target, values) {
    $(target).replaceChildren(
      ...values.map((text) => {
        const p = document.createElement("p");
        p.textContent = text;
        return p;
      }),
    );
  }
  $("#change").addEventListener("click", () => {
    $("#preview-title").textContent = $("#title").value || "Untitled paste";
    $("#code").replaceChildren(
      ...$("#source")
        .value.split("\n")
        .map((line, i) => {
          const row = document.createElement("span");
          row.className = "code-line";
          const n = document.createElement("span");
          n.className = "line-number";
          n.textContent = String(i + 1);
          row.append(n);
          if ($("#syntax").value === "JavaScript") {
            line.split(/\b(function|return|const|let)\b/g).forEach((part) => {
              const span = document.createElement("span");
              span.textContent = part;
              if (/^(function|return|const|let)$/.test(part)) span.className = "keyword";
              row.append(span);
            });
          } else row.append(document.createTextNode(line));
          return row;
        }),
    );
    $("#rendered").hidden = false;
    status("Code preview rendered as text. No submitted code was executed or uploaded.");
  });
})();