Binary Page Beta 1

Signed-off-by: Alexander Lyall <alex@adcm.uk>
feat(v2-alpha): add collapsible toolbox and refine binary simulator layout
2025-12-16 17:18:03 +00:00 · 2025-12-16 15:13:18 +00:00 · 2025-12-16 14:27:51 +00:00 · 2025-12-16 13:04:21 +00:00 · 2025-12-16 11:30:59 +00:00 · 2025-12-16 11:19:51 +00:00
21 changed files with 1313 additions and 1636 deletions
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
-  "name": "computing-box",
+  "name": "Computing:Box",
  "type": "module",
-  "version": "0.0.1",
+  "version": "2.0.0 Alpha",
  "scripts": {
    "dev": "astro dev",
    "build": "astro build",
--- a/public/css/tools/binary.css
+++ b/public/css/tools/binary.css
@@ -1,137 +0,0 @@
-/* ---------- DSEG7 font ---------- */
-/* Put your font file here:
-   public/fonts/DSEG7Classic-Regular.woff2
-*/
-@font-face {
-  font-family: "DSEG7ClassicRegular";
-  src: url("/fonts/DSEG7Classic-Regular.woff2") format("woff2");
-  font-display: swap;
-}
-
-/* ---------- Layout ---------- */
-.tool-shell {
-  min-height: 100vh;
-  display: grid;
-  place-items: center;
-  padding: 1rem;
-  background: #0b0f14;
-  color: #e7eaf0;
-  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
-}
-
-.tool-card {
-  width: min(1100px, 100%);
-  background: #111824;
-  border: 1px solid rgba(255,255,255,0.08);
-  border-radius: 18px;
-  padding: 1rem;
-}
-
-.tool-header h1 { margin: 0 0 .25rem 0; font-size: 1.4rem; }
-.tool-header p { margin: 0 0 1rem 0; opacity: .85; }
-
-.display-grid {
-  display: grid;
-  grid-template-columns: 1fr 1fr;
-  gap: .75rem;
-  margin-bottom: .75rem;
-}
-
-.display-box {
-  background: #0b0f14;
-  border: 1px solid rgba(255,255,255,0.08);
-  border-radius: 14px;
-  padding: .75rem;
-}
-
-.display-label { font-size: .9rem; opacity: .8; margin-bottom: .25rem; }
-
-.sevenseg {
-  font-family: "DSEG7ClassicRegular", monospace;
-  font-size: clamp(2rem, 4vw, 3.2rem);
-  letter-spacing: 0.08em;
-  line-height: 1.1;
-}
-
-/* Buttons under denary/binary (your request) */
-.actions {
-  display: flex;
-  flex-wrap: wrap;
-  gap: .5rem;
-  margin-bottom: 1rem;
-}
-
-/* ---------- Simple MD3-ish buttons ---------- */
-.md3-btn {
-  border: 1px solid rgba(255,255,255,0.16);
-  background: rgba(255,255,255,0.06);
-  color: #e7eaf0;
-  padding: .6rem .9rem;
-  border-radius: 999px;
-  cursor: pointer;
-  font-weight: 600;
-}
-.md3-btn:hover { background: rgba(255,255,255,0.10); }
-.md3-btn--tonal { background: rgba(255,255,255,0.10); }
-
-/* ---------- Switches row ---------- */
-.switch-row {
-  display: grid;
-  grid-template-columns: repeat(8, minmax(90px, 1fr));
-  gap: .75rem;
-}
-
-.switch-col {
-  display: grid;
-  justify-items: center;
-  gap: .35rem;
-}
-
-.bit-label { opacity: .85; font-weight: 600; }
-
-/* ---------- “Light switch” rocker ---------- */
-.rocker {
-  position: relative;
-  width: 70px;
-  height: 46px;
-  display: inline-block;
-  user-select: none;
-}
-
-.rocker input {
-  opacity: 0;
-  width: 0;
-  height: 0;
-}
-
-.rocker-body {
-  position: absolute;
-  inset: 0;
-  border-radius: 12px;
-  background: #1a2331;
-  border: 1px solid rgba(255,255,255,0.14);
-  box-shadow: inset 0 0 0 2px rgba(0,0,0,0.35);
-}
-
-/* the “toggle” */
-.rocker-body::after {
-  content: "";
-  position: absolute;
-  left: 6px;
-  top: 6px;
-  width: 58px;
-  height: 18px;
-  border-radius: 10px;
-  background: rgba(255,255,255,0.20);
-  transition: transform 180ms ease, background 180ms ease;
-}
-
-/* ON position */
-.rocker input:checked + .rocker-body::after {
-  transform: translateY(16px);
-  background: rgba(255,255,255,0.55);
-}
-
-@media (max-width: 900px) {
-  .switch-row { grid-template-columns: repeat(4, minmax(90px, 1fr)); }
-}
--- a/public/favicon.svg
+++ b/public/favicon.svg
@@ -1,9 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 128 128">
-    <path d="M50.4 78.5a75.1 75.1 0 0 0-28.5 6.9l24.2-65.7c.7-2 1.9-3.2 3.4-3.2h29c1.5 0 2.7 1.2 3.4 3.2l24.2 65.7s-11.6-7-28.5-7L67 45.5c-.4-1.7-1.6-2.8-2.9-2.8-1.3 0-2.5 1.1-2.9 2.7L50.4 78.5Zm-1.1 28.2Zm-4.2-20.2c-2 6.6-.6 15.8 4.2 20.2a17.5 17.5 0 0 1 .2-.7 5.5 5.5 0 0 1 5.7-4.5c2.8.1 4.3 1.5 4.7 4.7.2 1.1.2 2.3.2 3.5v.4c0 2.7.7 5.2 2.2 7.4a13 13 0 0 0 5.7 4.9v-.3l-.2-.3c-1.8-5.6-.5-9.5 4.4-12.8l1.5-1a73 73 0 0 0 3.2-2.2 16 16 0 0 0 6.8-11.4c.3-2 .1-4-.6-6l-.8.6-1.6 1a37 37 0 0 1-22.4 2.7c-5-.7-9.7-2-13.2-6.2Z" />
-    <style>
-        path { fill: #000; }
-        @media (prefers-color-scheme: dark) {
-            path { fill: #FFF; }
-        }
-    </style>
-</svg>
--- a/public/fonts/Seven-Segment.woff
+++ b/public/fonts/Seven-Segment.woff
--- a/public/fonts/Seven-Segment.woff2
+++ b/public/fonts/Seven-Segment.woff2
--- a/public/js/binary/unsigned-binary.js
+++ b/public/js/binary/unsigned-binary.js
@@ -1,115 +0,0 @@
-// Browser-only script. Safe because it's loaded via <script> (not server-imported).
-
-const BIT_COUNT = 8; // unsigned page = 8 bits
-const bitValues = [128, 64, 32, 16, 8, 4, 2, 1];
-
-const elDenary = document.getElementById("denaryNumber");
-const elBinary = document.getElementById("binaryNumber");
-const elSwitches = document.getElementById("bitSwitches");
-
-const btnCustomDenary = document.getElementById("btnCustomDenary");
-const btnCustomBinary = document.getElementById("btnCustomBinary");
-const btnReset = document.getElementById("btnReset");
-
-let bits = new Array(BIT_COUNT).fill(false);
-
-function renderSwitches() {
-  elSwitches.innerHTML = "";
-
-  bitValues.forEach((value, index) => {
-    const id = `bit-${value}`;
-
-    const wrapper = document.createElement("div");
-    wrapper.className = "switch-col";
-
-    const labelTop = document.createElement("div");
-    labelTop.className = "bit-label";
-    labelTop.textContent = value;
-
-    const label = document.createElement("label");
-    label.className = "rocker";
-    label.setAttribute("for", id);
-
-    const input = document.createElement("input");
-    input.type = "checkbox";
-    input.id = id;
-    input.checked = bits[index];
-
-    input.addEventListener("change", () => {
-      bits[index] = input.checked;
-      updateNumbers();
-    });
-
-    const span = document.createElement("span");
-    span.className = "rocker-body";
-    span.setAttribute("aria-hidden", "true");
-
-    label.appendChild(input);
-    label.appendChild(span);
-
-    wrapper.appendChild(labelTop);
-    wrapper.appendChild(label);
-
-    elSwitches.appendChild(wrapper);
-  });
-}
-
-function updateNumbers() {
-  const binary = bits.map(b => (b ? "1" : "0")).join("");
-  const denary = bits.reduce((acc, b, i) => acc + (b ? bitValues[i] : 0), 0);
-
-  elBinary.textContent = binary;
-  elDenary.textContent = denary.toString();
-}
-
-function resetAll() {
-  bits = new Array(BIT_COUNT).fill(false);
-  renderSwitches();
-  updateNumbers();
-}
-
-function requestCustomDenary() {
-  let input = prompt(`Enter a denary number (0 to 255):`);
-  if (input === null) return;
-
-  const n = Number.parseInt(input, 10);
-  if (Number.isNaN(n) || n < 0 || n > 255) {
-    alert("Invalid input. Enter a number from 0 to 255.");
-    return;
-  }
-
-  let remaining = n;
-  bits = bitValues.map(v => {
-    if (remaining >= v) {
-      remaining -= v;
-      return true;
-    }
-    return false;
-  });
-
-  renderSwitches();
-  updateNumbers();
-}
-
-function requestCustomBinary() {
-  let input = prompt(`Enter an ${BIT_COUNT}-bit binary number (e.g. 01010101):`);
-  if (input === null) return;
-
-  input = input.trim();
-  const re = new RegExp(`^[01]{${BIT_COUNT}}$`);
-  if (!re.test(input)) {
-    alert(`Invalid input. Enter exactly ${BIT_COUNT} digits using only 0 or 1.`);
-    return;
-  }
-
-  bits = input.split("").map(c => c === "1");
-  renderSwitches();
-  updateNumbers();
-}
-
-btnCustomDenary?.addEventListener("click", requestCustomDenary);
-btnCustomBinary?.addEventListener("click", requestCustomBinary);
-btnReset?.addEventListener("click", resetAll);
-
-renderSwitches();
-updateNumbers();
--- a/public/js/tools/unsigned-binary.js
+++ b/public/js/tools/unsigned-binary.js
@@ -1,72 +0,0 @@
-// public/js/tools/unsigned-binary.js
-// Lightweight: no frameworks. Works on weak devices.
-const BIT_COUNT = 8;
-const MAX_DENARY = 255;
-let bits = new Array(BIT_COUNT).fill(false);
-function bitsToBinaryString(){
- return bits.map(b => (b ? "1" : "0")).join("");
-}
-function bitsToDenary(){
- // MSB on the left: 128..1
- const weights = [128,64,32,16,8,4,2,1];
- return bits.reduce((acc, b, i) => acc + (b ? weights[i] : 0), 0);
-}
-function render(){
- const grid = document.getElementById("bitGrid");
- grid.innerHTML = "";
- const weights = [128,64,32,16,8,4,2,1];
- bits.forEach((on, i) => {
- const btn = document.createElement("button");
- btn.type = "button";
- btn.className = "btn";
- btn.style.width = "100%";
- btn.style.justifyContent = "space-between";
- btn.setAttribute("aria-pressed", on ? "true" : "false");
- btn.innerHTML = `<span>${weights[i]}</span><b>${on ? "1" : "0"}</b>`;
- btn.addEventListener("click", () => {
- bits[i] = !bits[i];
- update();
- });
- grid.appendChild(btn);
- });
-}
-function update(){
- document.getElementById("binaryNumber").innerText = bitsToBinaryString();
- document.getElementById("denaryNumber").innerText = bitsToDenary();
- render();
-}
-function requestBinary(){
- let v;
- do{
- v = prompt("Enter an 8-bit binary value (8 digits, only 0 or 1):", bitsToBinaryString());
- if(v === null) return;
- v = v.trim();
- }while(!/^[01]{8}$/.test(v));
- bits = v.split("").map(ch => ch === "1");
- update();
-}
-function requestDenary(){
- let v;
- do{
- v = prompt("Enter a denary value (0 to 255):", String(bitsToDenary()));
- if(v === null) return;
- v = Number(v);
- }while(!Number.isInteger(v) || v < 0 || v > MAX_DENARY);
- // set bits from MSB to LSB
- const weights = [128,64,32,16,8,4,2,1];
- bits = weights.map(w => {
- if(v >= w){ v -= w; return true; }
- return false;
- });
- update();
-}
-function reset(){
- bits = new Array(BIT_COUNT).fill(false);
- update();
-}
-document.addEventListener("DOMContentLoaded", () => {
- document.getElementById("btnCustomBinary")?.addEventListener("click", requestBinary);
- document.getElementById("btnCustomDenary")?.addEventListener("click", requestDenary);
- document.getElementById("btnReset")?.addEventListener("click", reset);
- update();
-});
--- a/public/styles.css
+++ b/public/styles.css
@@ -1,96 +0,0 @@
-/* src/styles/md3-tokens.css */
-/* MD3-inspired tokens tuned for education: high readability, clear contrast, calm surfaces */
-:root{
- /* Typography */
- --font-sans: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
- --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
- /* Spacing + shape */
- --radius-1: 10px;
- --radius-2: 16px;
- --radius-3: 22px;
- --shadow-1: 0 1px 2px rgba(0,0,0,.08), 0 2px 8px rgba(0,0,0,.06);
- /* Color roles (keep simple) */
- --md-surface: #ffffff;
- --md-surface-2: #f6f7fb;
- --md-on-surface: #111318;
- --md-primary: #2f6fed; /* calm blue */
- --md-on-primary: #ffffff;
- --md-secondary: #5a5f72; /* muted */
- --md-on-secondary: #ffffff;
- --md-tertiary: #0f766e; /* teal for "practical" tools */
- --md-on-tertiary: #ffffff;
- --md-outline: #d7dbe7;
- --md-success: #1a7f37;
- --md-warning: #b54708;
- --md-danger: #b42318;
- /* Focus ring for accessibility */
- --md-focus: 0 0 0 3px rgba(47,111,237,.28);
-}
-@media (prefers-color-scheme: dark){
- :root{
- --md-surface: #0b0e14;
- --md-surface-2: #121725;
- --md-on-surface: #e8eaf2;
- --md-primary: #9bb6ff;
- --md-on-primary: #0b0e14;
- --md-secondary: #b8bccd;
- --md-on-secondary: #0b0e14;
- --md-tertiary: #4fd1c5;
- --md-on-tertiary: #0b0e14;
- --md-outline: #2b3244;
- --md-focus: 0 0 0 3px rgba(155,182,255,.25);
- }
-}
-
-/* src/styles/base.css */
-@import "./md3-tokens.css";
-html, body{ height:100%; }
-body{
- margin:0;
- font-family: var(--font-sans);
- background: var(--md-surface-2);
- color: var(--md-on-surface);
-}
-a{ color: var(--md-primary); text-decoration: none; }
-a:hover{ text-decoration: underline; }
-.container{
- max-width: 1100px;
- margin: 0 auto;
- padding: 16px;
-}
-.card{
- background: var(--md-surface);
- border: 1px solid var(--md-outline);
- border-radius: var(--radius-2);
- box-shadow: var(--shadow-1);
- padding: 16px;
-}
-.btn{
- display:inline-flex;
- gap:8px;
- align-items:center;
- justify-content:center;
- border-radius: 999px;
- border: 1px solid var(--md-outline);
- background: var(--md-surface);
- color: var(--md-on-surface);
- padding: 10px 14px;
- font-weight: 600;
- cursor: pointer;
-}
-.btn:hover{ filter: brightness(0.98); }
-.btn:focus{ outline:none; box-shadow: var(--md-focus); }
-.btn-primary{
- background: var(--md-primary);
- color: var(--md-on-primary);
- border-color: transparent;
-}
-.badge{
- display:inline-block;
- padding: 2px 10px;
- border-radius: 999px;
- font-size: 12px;
- border: 1px solid var(--md-outline);
- background: var(--md-surface-2);
-}
-code, pre{ font-family: var(--font-mono); }
--- a/src/components/Footer.astro
+++ b/src/components/Footer.astro
@@ -0,0 +1,29 @@
+<footer class="siteFooter">
+  <div class="inner">
+    <div class="title">Computer Science Concept Simulators</div>
+    <div class="meta">
+      © 2025 Computing:Box · Created with 💗 by Mr Lyall<br />
+      Powered by ADCM Networks
+    </div>
+  </div>
+</footer>
+
+<style>
+  .siteFooter{
+    border-top: 1px solid rgba(255,255,255,.10);
+    background: rgba(0,0,0,.10);
+  }
+  .inner{
+    max-width:1200px;
+    margin:0 auto;
+    padding: 18px 20px;
+    color: rgba(255,255,255,.65);
+    font-size: 12px;
+    line-height: 1.6;
+  }
+  .title{
+    color: rgba(255,255,255,.80);
+    font-weight: 800;
+    margin-bottom: 6px;
+  }
+</style>
--- a/src/components/Header.astro
+++ b/src/components/Header.astro
@@ -0,0 +1,57 @@
+<header class="siteHeader">
+  <div class="inner">
+    <div class="brand">
+      <a href="/">Computing:Box</a>
+    </div>
+
+    <nav class="nav">
+      <a href="/binary">Binary</a>
+      <a href="/hexadecimal">Hexadecimal</a>
+      <a href="/hex-colours">Hex Colours</a>
+      <a href="/logic-gates">Logic Gates</a>
+      <a href="/about">About</a>
+    </nav>
+  </div>
+</header>
+
+<style>
+  .siteHeader{
+    height: 64px;
+    display:flex;
+    align-items:center;
+    border-bottom: 1px solid rgba(255,255,255,.10);
+    background: rgba(0,0,0,.10);
+    backdrop-filter: blur(8px);
+  }
+  .inner{
+    max-width: 1200px;
+    width: 100%;
+    margin: 0 auto;
+    padding: 0 20px;
+    display:flex;
+    align-items:center;
+    justify-content: space-between;
+    gap: 18px;
+  }
+  .brand a{
+    color:#fff;
+    text-decoration:none;
+    font-weight: 800;
+    letter-spacing: .02em;
+  }
+  .nav{
+    display:flex;
+    gap: 16px;
+    flex-wrap: wrap;
+  }
+  .nav a{
+    color: rgba(255,255,255,.78);
+    text-decoration:none;
+    font-weight: 700;
+    font-size: 13px;
+    letter-spacing:.02em;
+  }
+  .nav a:hover{
+    color:#fff;
+  }
+</style>
--- a/src/components/tools/BinarySimulator.astro
+++ b/src/components/tools/BinarySimulator.astro
@@ -1,381 +0,0 @@
---
-const { mode = "unsigned", defaultBits = 8 } = Astro.props;
-
-// For unsigned: min 1 bit, max 16 bits (tweak if you want)
-const minBits = 4;
-const maxBits = 16;
-const initialBits = Math.min(Math.max(defaultBits, minBits), maxBits);
---
-
-<section class="binary-sim" data-mode={mode} data-bits={initialBits}>
-  <div class="top">
-    <div class="left-brand">
-      <!-- Replace with your logo/img -->
-      <div class="brand-box" aria-hidden="true">Computing:Box</div>
-    </div>
-
-    <div class="display" aria-live="polite">
-      <div class="label">DENARY</div>
-      <div id="denaryNumber" class="value">0</div>
-
-      <div class="label">BINARY</div>
-      <div id="binaryNumber" class="value mono">00000000</div>
-    </div>
-
-    <div class="actions">
-      <button class="btn" type="button" data-action="custom-binary">Custom Binary</button>
-      <button class="btn" type="button" data-action="custom-denary">Custom Denary</button>
-      <button class="btn" type="button" data-action="shift-left">Left Shift</button>
-      <button class="btn" type="button" data-action="shift-right">Right Shift</button>
-
-      <div class="bits-control">
-        <div class="bits-title">Bits</div>
-        <div class="bits-buttons">
-          <button class="btn small" type="button" data-action="bits-minus" aria-label="Decrease bits">−</button>
-          <span id="bitsCount" class="bits-count">{initialBits}</span>
-          <button class="btn small" type="button" data-action="bits-plus" aria-label="Increase bits">+</button>
-        </div>
-      </div>
-    </div>
-  </div>
-
-  <div id="bitsRow" class="bits-row" aria-label="Binary bit switches"></div>
-</section>
-
-<script is:inline>
-(() => {
-  const root = document.currentScript.closest(".binary-sim");
-  const bitsRow = root.querySelector("#bitsRow");
-  const binaryEl = root.querySelector("#binaryNumber");
-  const denaryEl = root.querySelector("#denaryNumber");
-  const bitsCountEl = root.querySelector("#bitsCount");
-
-  let bitCount = parseInt(root.dataset.bits || "8", 10);
-  const minBits = 4;
-  const maxBits = 16;
-
-  // state: array of 0/1, MSB at index 0
-  let bits = new Array(bitCount).fill(0);
-
-  function placeValues(n) {
-    // unsigned place values: [2^(n-1), ..., 2^0]
-    return Array.from({ length: n }, (_, i) => 2 ** (n - 1 - i));
-  }
-
-  function bitsToDenary(bitsArr) {
-    const pv = placeValues(bitsArr.length);
-    return bitsArr.reduce((acc, b, i) => acc + (b ? pv[i] : 0), 0);
-  }
-
-  function render() {
-    const binaryStr = bits.join("");
-    binaryEl.textContent = binaryStr;
-    denaryEl.textContent = String(bitsToDenary(bits));
-    bitsCountEl.textContent = String(bitCount);
-
-    const pv = placeValues(bitCount);
-
-    bitsRow.innerHTML = pv.map((value, i) => {
-      const id = `bit_${bitCount}_${i}`;
-      const checked = bits[i] === 1 ? "checked" : "";
-      return `
-        <div class="bit-col">
-          <div class="bulb ${bits[i] ? "on" : "off"}" aria-hidden="true"></div>
-          <div class="place">${value}</div>
-
-          <label class="switch" for="${id}">
-            <input id="${id}" type="checkbox" ${checked} data-index="${i}">
-            <span class="slider" aria-hidden="true"></span>
-            <span class="sr-only">Toggle bit value ${value}</span>
-          </label>
-        </div>
-      `;
-    }).join("");
-  }
-
-  function setBitsFromBinaryString(str) {
-    // allow shorter input; pad left
-    const clean = (str || "").trim();
-    if (!/^[01]+$/.test(clean) || clean.length > bitCount) return false;
-    const padded = clean.padStart(bitCount, "0");
-    bits = padded.split("").map(c => c === "1" ? 1 : 0);
-    return true;
-  }
-
-  function setBitsFromDenary(num) {
-    if (!Number.isInteger(num)) return false;
-    const max = (2 ** bitCount) - 1;
-    if (num < 0 || num > max) return false;
-
-    const bin = num.toString(2).padStart(bitCount, "0");
-    bits = bin.split("").map(c => c === "1" ? 1 : 0);
-    return true;
-  }
-
-  function shiftLeft() {
-    bits = bits.slice(1).concat(0);
-  }
-
-  function shiftRight() {
-    bits = [0].concat(bits.slice(0, -1));
-  }
-
-  function resizeBits(newCount) {
-    const clamped = Math.max(minBits, Math.min(maxBits, newCount));
-    if (clamped === bitCount) return;
-
-    // keep value as best as possible: preserve LSBs when resizing
-    const currentBinary = bits.join("");
-    bitCount = clamped;
-    bits = new Array(bitCount).fill(0);
-
-    const take = currentBinary.slice(-bitCount);
-    setBitsFromBinaryString(take);
-  }
-
-  // Switch input handler
-  bitsRow.addEventListener("change", (e) => {
-    const input = e.target;
-    if (!(input instanceof HTMLInputElement)) return;
-    const idx = parseInt(input.dataset.index || "-1", 10);
-    if (idx < 0) return;
-    bits[idx] = input.checked ? 1 : 0;
-    render();
-  });
-
-  // Button actions
-  root.querySelector(".actions").addEventListener("click", (e) => {
-    const btn = e.target.closest("button[data-action]");
-    if (!btn) return;
-
-    const action = btn.dataset.action;
-
-    if (action === "custom-binary") {
-      const entered = prompt(`Enter a ${bitCount}-bit binary value (0s and 1s):`, bits.join(""));
-      if (entered === null) return;
-      if (!setBitsFromBinaryString(entered)) {
-        alert(`Invalid binary. Use only 0 and 1, up to ${bitCount} digits.`);
-        return;
-      }
-      render();
-    }
-
-    if (action === "custom-denary") {
-      const max = (2 ** bitCount) - 1;
-      const entered = prompt(`Enter a denary value (0 to ${max}):`, String(bitsToDenary(bits)));
-      if (entered === null) return;
-      const num = Number.parseInt(entered, 10);
-      if (!setBitsFromDenary(num)) {
-        alert(`Invalid denary. Enter a whole number from 0 to ${max}.`);
-        return;
-      }
-      render();
-    }
-
-    if (action === "shift-left") { shiftLeft(); render(); }
-    if (action === "shift-right") { shiftRight(); render(); }
-
-    if (action === "bits-minus") { resizeBits(bitCount - 1); render(); }
-    if (action === "bits-plus") { resizeBits(bitCount + 1); render(); }
-  });
-
-  // initial
-  render();
-})();
-</script>
-
-<style>
-/* Layout */
-.binary-sim {
-  padding: 2rem 1rem 3rem;
-}
-
-.top {
-  display: grid;
-  grid-template-columns: 260px 1fr 220px;
-  gap: 1.5rem;
-  align-items: start;
-}
-
-@media (max-width: 980px) {
-  .top {
-    grid-template-columns: 1fr;
-  }
-  .actions {
-    display: grid;
-    grid-template-columns: 1fr 1fr;
-  }
-}
-
-/* Brand placeholder */
-.brand-box {
-  width: 180px;
-  height: 180px;
-  border-radius: 12px;
-  display: grid;
-  place-items: center;
-  font-weight: 700;
-  opacity: 0.9;
-  border: 1px solid rgba(255,255,255,0.08);
-  background: rgba(255,255,255,0.04);
-}
-
-/* Display */
-.display {
-  text-align: center;
-  padding: 1rem;
-}
-
-.label {
-  letter-spacing: 0.12em;
-  opacity: 0.85;
-  margin-top: 0.5rem;
-}
-
-.value {
-  font-size: 3rem;
-  line-height: 1.1;
-  margin: 0.25rem 0 0.75rem;
-  font-weight: 700;
-}
-
-.mono {
-  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
-}
-
-/* Buttons */
-.actions {
-  display: flex;
-  flex-direction: column;
-  gap: 0.75rem;
-}
-
-.btn {
-  border: 0;
-  border-radius: 10px;
-  padding: 0.75rem 1rem;
-  font-weight: 600;
-  cursor: pointer;
-  background: rgba(255,255,255,0.08);
-  color: inherit;
-}
-
-.btn:hover { background: rgba(255,255,255,0.12); }
-
-.btn.small {
-  padding: 0.45rem 0.75rem;
-  border-radius: 10px;
-}
-
-.bits-control {
-  margin-top: 0.25rem;
-  padding-top: 0.5rem;
-  border-top: 1px solid rgba(255,255,255,0.08);
-}
-
-.bits-title { opacity: 0.8; margin-bottom: 0.35rem; }
-
-.bits-buttons {
-  display: flex;
-  align-items: center;
-  gap: 0.5rem;
-}
-
-.bits-count {
-  min-width: 2ch;
-  text-align: center;
-  font-weight: 700;
-}
-
-/* Bits row */
-.bits-row {
-  margin-top: 2rem;
-  display: grid;
-  grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
-  gap: 1.25rem;
-  align-items: end;
-}
-
-.bit-col {
-  text-align: center;
-  padding: 0.5rem 0.25rem;
-}
-
-.place {
-  margin: 0.5rem 0 0.5rem;
-  font-size: 2rem;
-  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
-}
-
-/* Bulb */
-.bulb {
-  width: 26px;
-  height: 26px;
-  margin: 0 auto 0.25rem;
-  border-radius: 50%;
-  border: 1px solid rgba(255,255,255,0.15);
-}
-.bulb.off { opacity: 0.15; }
-.bulb.on  { opacity: 1; }
-
-/* Light switch (accessible checkbox) */
-.switch {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  width: 64px;
-  height: 36px;
-  position: relative;
-}
-
-.switch input {
-  position: absolute;
-  opacity: 0;
-  width: 1px;
-  height: 1px;
-}
-
-.slider {
-  width: 64px;
-  height: 36px;
-  border-radius: 999px;
-  background: rgba(255,255,255,0.10);
-  border: 1px solid rgba(255,255,255,0.14);
-  position: relative;
-  transition: transform 120ms ease, background 120ms ease;
-}
-
-.slider::after {
-  content: "";
-  position: absolute;
-  top: 4px;
-  left: 4px;
-  width: 28px;
-  height: 28px;
-  border-radius: 999px;
-  background: rgba(255,255,255,0.85);
-  transition: transform 120ms ease;
-}
-
-.switch input:checked + .slider {
-  background: rgba(255,255,255,0.18);
-}
-
-.switch input:checked + .slider::after {
-  transform: translateX(28px);
-}
-
-/* focus */
-.switch input:focus-visible + .slider {
-  outline: 3px solid rgba(255,255,255,0.35);
-  outline-offset: 2px;
-}
-
-.sr-only {
-  position: absolute;
-  width: 1px; height: 1px;
-  padding: 0; margin: -1px;
-  overflow: hidden; clip: rect(0,0,0,0);
-  white-space: nowrap; border: 0;
-}
-</style>
--- a/src/layouts/BaseLayout.astro
+++ b/src/layouts/BaseLayout.astro
@@ -1,17 +1,41 @@
 ---
-// src/layouts/BaseLayout.astro
 const { title = "Computing:Box" } = Astro.props;
 ---
+
 <!doctype html>
 <html lang="en">
  <head>
    <meta charset="utf-8" />
- <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="viewport" content="width=device-width,initial-scale=1" />
    <title>{title}</title>
- <link rel="stylesheet" href="/styles.css" />
- <link rel="stylesheet" href="/fonts/DSEG7Classic-Regular.css">
+    <link rel="stylesheet" href="/src/styles/site.css" />
  </head>
+
  <body>
+    <header class="site-header">
+      <div class="site-header__inner">
+        <div class="brand">Computing:Box</div>
+
+        <nav class="nav">
+          <a class="nav__link" href="/binary">Binary</a>
+          <a class="nav__link" href="/hexadecimal">Hexadecimal</a>
+          <a class="nav__link" href="/hex-colours">Hex Colours</a>
+          <a class="nav__link" href="/logic-gates">Logic Gates</a>
+          <a class="nav__link" href="/about">About</a>
+        </nav>
+      </div>
+    </header>
+
+    <main class="site-main">
      <slot />
+    </main>
+
+    <footer class="site-footer">
+      <div class="site-footer__inner">
+        <div>Computer Science Concept Simulators</div>
+        <div>© 2025 Computing:Box · Created with 💜 by Mr Lyall</div>
+        <div>Powered by ADCM Networks</div>
+      </div>
+    </footer>
  </body>
 </html>
--- a/src/pages/binary.astro
+++ b/src/pages/binary.astro
@@ -1,642 +1,125 @@
 ---
-/**
- * src/pages/binary.astro
- * Single-file binary simulator (Unsigned + Two's complement)
- * Bit width: 4..64
- *
- * Requires:
- *  public/fonts/DSEG7Classic-Regular.woff
- *  public/fonts/DSEG7Classic-Regular.ttf
- */
+import "../styles/binary.css";
 ---

+<!doctype html>
 <html lang="en">
  <head>
    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width,initial-scale=1" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>Binary | Computing:Box</title>
-
-    <style>
-      :root{
-        --bg: #1f2027;
-        --panel: #22242d;
-        --panel2:#262833;
-        --text: #e8e8ee;
-        --muted: #a9acb8;
-        --accent: #33ff7a;
-        --accent-dim: rgba(51,255,122,.15);
-        --line: rgba(255,255,255,.12);
-      }
-
-      @font-face{
-        font-family: "DSEG7ClassicRegular";
-        src:
-          url("/fonts/DSEG7Classic-Regular.woff") format("woff"),
-          url("/fonts/DSEG7Classic-Regular.ttf") format("truetype");
-        font-weight: 400;
-        font-style: normal;
-        font-display: swap;
-      }
-
-      body{
-        margin:0;
-        font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
-        background: var(--bg);
-        color: var(--text);
-      }
-
-      .wrap{
-        max-width: 1200px;
-        margin: 0 auto;
-        padding: 32px 20px 60px;
-      }
-
-      /* Layout: readout left, settings panel right (like your screenshot) */
-      .layout{
-        display:grid;
-        grid-template-columns: 1fr 360px;
-        gap: 22px;
-        align-items:start;
-      }
-
-      .readout{
-        text-align:center;
-        padding: 10px 10px 0;
-      }
-
-      .label{
-        letter-spacing: .18em;
-        font-weight: 700;
-        color: var(--muted);
-        text-transform: uppercase;
-        font-size: 16px;
-        margin-top: 8px;
-      }
-
-      .num{
-        font-family: "DSEG7ClassicRegular", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
-        font-weight: 400;
-        color: var(--accent);
-        text-shadow: 0 0 18px var(--accent-dim);
-      }
-
-      .value{
-        font-size: 70px;
-        line-height: 1.0;
-        margin: 6px 0 16px;
-      }
-
-      .binary{
-        font-size: 54px;
-        letter-spacing: .12em;
-        word-break: break-all;
-      }
-
-      /* Buttons under readout (as requested) */
-      .controls{
-        margin-top: 16px;
-        display:flex;
-        gap: 12px;
-        justify-content:center;
-        flex-wrap:wrap;
-      }
-
-      .btn{
-        background: rgba(255,255,255,.06);
-        border: 1px solid rgba(255,255,255,.14);
-        color: #fff;
-        padding: 12px 14px;
-        border-radius: 12px;
-        font-weight: 700;
-        cursor: pointer;
-        min-width: 160px;
-      }
-      .btn:active{ transform: translateY(1px); }
-
-      /* Settings panel cards */
-      .panel{
-        background: rgba(255,255,255,.04);
-        border: 1px solid rgba(255,255,255,.10);
-        border-radius: 14px;
-        padding: 16px 16px 14px;
-        margin-bottom: 14px;
-      }
-      .panelTitle{
-        font-size: 12px;
-        letter-spacing: .16em;
-        text-transform: uppercase;
-        color: var(--muted);
-        font-weight: 800;
-        margin-bottom: 10px;
-      }
-      .panelRow{
-        display:flex;
-        align-items:center;
-        justify-content:space-between;
-        gap: 12px;
-      }
-      .hint{
-        color: var(--muted);
-        font-size: 12px;
-        margin-top: 10px;
-        line-height: 1.35;
-      }
-
-      /* Reusable toggle switch (for MODE and for each BIT) */
-      .switch{
-        position: relative;
-        width: 56px;
-        height: 34px;
-        display:inline-block;
-        flex: 0 0 auto;
-      }
-      .switch input{
-        opacity:0;
-        width:0;
-        height:0;
-      }
-      .slider{
-        position:absolute;
-        inset:0;
-        background: rgba(255,255,255,.10);
-        border: 1px solid rgba(255,255,255,.14);
-        border-radius: 999px;
-        transition: .18s ease;
-      }
-      .slider::before{
-        content:"";
-        position:absolute;
-        height: 28px;
-        width: 28px;
-        left: 3px;
-        top: 2px;
-        background: rgba(255,255,255,.92);
-        border-radius: 50%;
-        transition: .18s ease;
-      }
-      .switch input:checked + .slider{
-        background: rgba(51,255,122,.20);
-        border-color: rgba(51,255,122,.55);
-      }
-      .switch input:checked + .slider::before{
-        transform: translateX(22px);
-        background: var(--accent);
-      }
-
-      /* Bit width controls */
-      .bwControls{
-        display:grid;
-        grid-template-columns: 44px 1fr 44px;
-        gap: 10px;
-        align-items:center;
-        margin-top: 8px;
-      }
-      .bwBtn{
-        width: 44px;
-        height: 44px;
-        border-radius: 12px;
-        border: 1px solid rgba(255,255,255,.14);
-        background: rgba(255,255,255,.06);
-        color: #fff;
-        font-weight: 900;
-        cursor: pointer;
-      }
-      .bwBtn:active{ transform: translateY(1px); }
-
-      .bwInput{
-        display:flex;
-        align-items:center;
-        justify-content:space-between;
-        gap: 12px;
-        background: rgba(255,255,255,.05);
-        border: 1px solid rgba(255,255,255,.12);
-        border-radius: 12px;
-        padding: 10px 12px;
-      }
-      .bwLabel{
-        color: var(--muted);
-        font-size: 12px;
-        letter-spacing: .14em;
-        text-transform: uppercase;
-        font-weight: 800;
-      }
-      .bwField{
-        width: 100px;
-        text-align:right;
-        background: transparent;
-        border: none;
-        outline: none;
-        color: var(--accent);
-        font-family: "DSEG7ClassicRegular", ui-monospace, monospace;
-        font-size: 26px;
-        padding: 0;
-      }
-      .bwField::-webkit-outer-spin-button,
-      .bwField::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
-      .bwField[type=number] { -moz-appearance: textfield; }
-
-      /* Bits grid */
-      .bits{
-        margin-top: 34px;
-        padding-top: 26px;
-        border-top: 1px solid var(--line);
-        display:grid;
-        gap: 18px;
-        align-items:end;
-        text-align:center;
-      }
-
-      .bit{
-        display:flex;
-        flex-direction:column;
-        align-items:center;
-        gap: 10px;
-        padding: 8px 4px;
-      }
-
-      .bitVal{
-        font-size: 34px;
-        color: var(--text);
-        opacity: .95;
-      }
-
-      /* Bulb (must come back!) */
-      .bulb{
-        width: 22px;
-        height: 22px;
-        border-radius: 50%;
-        background: rgba(255,255,255,.08);
-        border: 1px solid rgba(255,255,255,.12);
-        box-shadow: none;
-        margin-bottom: 6px;
-      }
-      .bulb.on{
-        background: #ffd86b;
-        border-color: rgba(255,216,107,.7);
-        box-shadow: 0 0 18px rgba(255,216,107,.6);
-      }
-
-      /* Responsive */
-      @media (max-width: 1000px){
-        .layout{ grid-template-columns: 1fr; }
-        .value{ font-size: 60px; }
-        .binary{ font-size: 44px; }
-      }
-      @media (max-width: 900px){
-        .value{ font-size: 54px; }
-        .binary{ font-size: 36px; }
-        .btn{ min-width: 140px; }
-      }
-    </style>
  </head>

  <body>
-    <main class="wrap">
-      <section class="layout">
-        <!-- LEFT: readout + buttons -->
-        <div>
-          <div class="readout">
-            <div class="label">Denary</div>
-            <div id="denaryNumber" class="value num">0</div>
+    <!-- Fixed/pinned toolbox toggle -->
+    <button id="toolboxToggle" class="toolboxToggle" type="button" aria-expanded="true" aria-controls="toolboxPanel">
+      <span class="toolboxIcon" aria-hidden="true">🧰</span>
+      <span class="toolboxText">Toolbox</span>
+    </button>

-            <div class="label">Binary</div>
-            <div id="binaryNumber" class="value binary num">00000000</div>
+    <!-- Fixed/pinned toolbox panel -->
+    <aside id="toolboxPanel" class="toolboxFixed" aria-label="Toolbox">
+      <div class="panelCol">
+        <div class="card">
+          <div class="cardTitle">Mode</div>

-            <div class="controls">
-              <button class="btn" id="btnCustomBinary" type="button">Custom Binary</button>
-              <button class="btn" id="btnCustomDenary" type="button">Custom Denary</button>
-              <button class="btn" id="btnShiftLeft" type="button">Left Shift</button>
-              <button class="btn" id="btnShiftRight" type="button">Right Shift</button>
-            </div>
-          </div>
+          <div class="toggleRow">
+            <div class="toggleLabel" id="lblUnsigned">Unsigned</div>

-          <!-- Bits grid (built by JS so bit-width 4..64 works) -->
-          <section id="bitsGrid" class="bits" aria-label="Bit switches"></section>
-        </div>
-
-        <!-- RIGHT: settings panel -->
-        <aside>
-          <div class="panel">
-            <div class="panelTitle">Mode</div>
-            <div class="panelRow">
-              <span style="font-weight:800;">Unsigned</span>
-
-              <!-- MODE TOGGLE uses SAME switch style -->
-              <label class="switch" aria-label="Toggle Two's complement mode">
+            <label class="switch" aria-label="Toggle mode">
              <input id="modeToggle" type="checkbox" />
              <span class="slider"></span>
            </label>

-              <span style="font-weight:800;">Two’s complement</span>
+            <div class="toggleLabel" id="lblTwos">Two&rsquo;s complement</div>
          </div>
-            <div class="hint">
-              Tip: In two’s complement, the left-most bit (MSB) represents a negative value.
+
+          <div class="hint" id="modeHint">
+            Tip: In unsigned binary, all bits represent positive values.
          </div>
        </div>

-          <div class="panel">
-            <div class="panelTitle">Bit width</div>
+        <!-- MERGED: Tools + Bit width -->
+        <div class="card">
+          <div class="cardTitle">Tools</div>

-            <div class="bwControls">
-              <button class="bwBtn" id="btnBitsDown" type="button" aria-label="Decrease bits">−</button>
+          <!-- Row 1: ▼ ▲ (left) + Reset (right) -->
+          <div class="toolsTopRow">
+            <div class="spinGroup" aria-label="Increment and decrement">
+              <button class="toolBtn toolSpin toolDown" id="btnDec" type="button" aria-label="Decrement">▼</button>
+              <button class="toolBtn toolSpin toolUp" id="btnInc" type="button" aria-label="Increment">▲</button>
+            </div>
+
+            <button class="toolBtn toolReset" id="btnClear" type="button">Reset</button>
+          </div>
+
+          <!-- Row 2: Bit Width (left) + Random (right) -->
+          <div class="toolsBottomRow">
+            <div class="bitWidthMini" aria-label="Bit width">
+              <div class="bitWidthMiniLabel">Bit width</div>
+
+              <div class="bitWidthMiniRow">
+                <button class="miniBtn" id="btnBitsDown" type="button" aria-label="Decrease bits">−</button>

-              <div class="bwInput">
-                <div class="bwLabel">Bits</div>
                <input
-                  id="bitsField"
-                  class="bwField"
+                  id="bitsInput"
+                  class="bitInput"
                  type="number"
-                  min="4"
+                  inputmode="numeric"
+                  min="1"
                  max="64"
                  step="1"
                  value="8"
-                  inputmode="numeric"
+                  aria-label="Number of bits"
                />
+
+                <button class="miniBtn" id="btnBitsUp" type="button" aria-label="Increase bits">+</button>
+              </div>
            </div>

-              <button class="bwBtn" id="btnBitsUp" type="button" aria-label="Increase bits">+</button>
+            <button class="toolBtn toolRandom" id="btnRandom" type="button">Random</button>
          </div>

-            <div class="hint">
-              Minimum 4 bits, maximum 64 bits.
+          <div class="hint">Random runs briefly then stops automatically.</div>
        </div>
      </div>
    </aside>
+
+    <!-- Main content (reserves space for toolbox when open) -->
+    <main id="mainWrap" class="wrap">
+      <section class="topGrid">
+        <!-- LEFT -->
+        <div>
+          <div class="readout">
+            <div class="label">Denary</div>
+            <div id="denaryNumber" class="num denaryValue">0</div>
+
+            <div class="label">Binary</div>
+            <div id="binaryNumber" class="num binaryValue">0000 0000</div>
+
+            <div class="controlsStack">
+              <div class="controlsRow">
+                <button class="btn btnAccent" id="btnCustomBinary" type="button">Custom Binary</button>
+                <button class="btn btnAccent" id="btnCustomDenary" type="button">Custom Denary</button>
+              </div>
+
+              <div class="controlsRow">
+                <button class="btn" id="btnShiftLeft" type="button">Left Shift</button>
+                <button class="btn" id="btnShiftRight" type="button">Right Shift</button>
+              </div>
+            </div>
+          </div>
+
+          <div class="divider"></div>
+
+          <section class="bitsWrap" aria-label="Bit switches">
+            <div class="bitsGrid" id="bitsGrid"></div>
+          </section>
+        </div>
      </section>
    </main>

-    <script type="module">
-      // ---------- State ----------
-      let bitsCount = 8;           // 4..64
-      let isTwos = false;          // false = unsigned
-      let bitStates = [];          // MSB -> LSB booleans
-
-      // ---------- Helpers ----------
-      function clamp(n, min, max){ return Math.min(max, Math.max(min, n)); }
-
-      function pow2(n){
-        // for up to 64 bits, Number is still OK for *visual simulator*.
-        // if you later want exact 64-bit maths, swap to BigInt end-to-end.
-        return 2 ** n;
-      }
-
-      function getPlaceValues(){
-        // MSB -> LSB
-        // Unsigned: [2^(n-1), ..., 1]
-        // Two's:    [-2^(n-1), 2^(n-2), ..., 1]
-        const vals = [];
-        for (let i = 0; i < bitsCount; i++){
-          const power = bitsCount - 1 - i;
-          if (isTwos && i === 0){
-            vals.push(-pow2(power));
-          } else {
-            vals.push(pow2(power));
-          }
-        }
-        return vals;
-      }
-
-      function binaryString(){
-        return bitStates.map(b => (b ? "1" : "0")).join("");
-      }
-
-      function denaryValue(){
-        const values = getPlaceValues();
-        let sum = 0;
-        for (let i = 0; i < bitsCount; i++){
-          if (bitStates[i]) sum += values[i];
-        }
-        return sum;
-      }
-
-      function rangeForMode(){
-        if (!isTwos){
-          return { min: 0, max: pow2(bitsCount) - 1 };
-        }
-        return { min: -pow2(bitsCount - 1), max: pow2(bitsCount - 1) - 1 };
-      }
-
-      function updateReadout(){
-        document.getElementById("binaryNumber").innerText = binaryString();
-        document.getElementById("denaryNumber").innerText = String(denaryValue());
-
-        // bulb on/off updates:
-        for (let i = 0; i < bitsCount; i++){
-          const bulb = document.getElementById(`bulb-${i}`);
-          if (bulb) bulb.classList.toggle("on", !!bitStates[i]);
-        }
-      }
-
-      // ---------- DOM build for bits grid ----------
-      function setBitsGridColumns(){
-        const grid = document.getElementById("bitsGrid");
-        // make it adapt (up to 16 per row max, then wraps)
-        const cols = clamp(bitsCount, 4, 16);
-        grid.style.gridTemplateColumns = `repeat(${cols}, 1fr)`;
-      }
-
-      function buildBitsGrid(){
-        const grid = document.getElementById("bitsGrid");
-        grid.innerHTML = "";
-
-        setBitsGridColumns();
-
-        const values = getPlaceValues();
-
-        for (let i = 0; i < bitsCount; i++){
-          const v = values[i];
-
-          const bit = document.createElement("div");
-          bit.className = "bit";
-
-          const bulb = document.createElement("div");
-          bulb.className = "bulb";
-          bulb.id = `bulb-${i}`;
-          bulb.setAttribute("aria-hidden", "true");
-
-          const val = document.createElement("div");
-          val.className = "bitVal num";
-          // show absolute label for MSB in twos? No — show the actual negative value (clear to students).
-          val.textContent = String(v);
-
-          // IMPORTANT: bit switch must be the SAME style as MODE switch
-          const label = document.createElement("label");
-          label.className = "switch";
-          label.setAttribute("aria-label", `Toggle bit ${v}`);
-
-          const input = document.createElement("input");
-          input.type = "checkbox";
-          input.dataset.index = String(i);
-          input.checked = !!bitStates[i];
-
-          const slider = document.createElement("span");
-          slider.className = "slider";
-
-          input.addEventListener("change", () => {
-            bitStates[i] = input.checked;
-            updateReadout();
-          });
-
-          label.appendChild(input);
-          label.appendChild(slider);
-
-          bit.appendChild(bulb);
-          bit.appendChild(val);
-          bit.appendChild(label);
-          grid.appendChild(bit);
-        }
-
-        updateReadout();
-      }
-
-      // ---------- Set state from binary / denary ----------
-      function setFromBinary(bin){
-        const clean = String(bin).replace(/\s+/g, "");
-        if (!/^[01]+$/.test(clean)) return false;
-
-        const padded = clean.slice(-bitsCount).padStart(bitsCount, "0");
-        bitStates = [...padded].map(ch => ch === "1");
-
-        // update toggles without rebuilding
-        for (let i = 0; i < bitsCount; i++){
-          const toggle = document.querySelector(`input[type="checkbox"][data-index="${i}"]`);
-          if (toggle) toggle.checked = bitStates[i];
-        }
-        updateReadout();
-        return true;
-      }
-
-      function setFromDenary(n){
-        const num = Number(n);
-        if (!Number.isInteger(num)) return false;
-
-        const { min, max } = rangeForMode();
-        if (num < min || num > max) return false;
-
-        // convert to bit pattern
-        let unsignedVal;
-        if (!isTwos){
-          unsignedVal = num;
-        } else {
-          // two's complement representation
-          unsignedVal = num < 0 ? (pow2(bitsCount) + num) : num;
-        }
-
-        // build MSB->LSB bits from unsignedVal
-        const newBits = [];
-        for (let i = 0; i < bitsCount; i++){
-          const power = bitsCount - 1 - i;
-          const bit = Math.floor(unsignedVal / pow2(power)) % 2;
-          newBits.push(bit === 1);
-        }
-        bitStates = newBits;
-
-        for (let i = 0; i < bitsCount; i++){
-          const toggle = document.querySelector(`input[type="checkbox"][data-index="${i}"]`);
-          if (toggle) toggle.checked = bitStates[i];
-        }
-        updateReadout();
-        return true;
-      }
-
-      // ---------- Shifts ----------
-      function shiftLeft(){
-        // logical left shift: drop MSB, add 0 at LSB
-        bitStates = bitStates.slice(1).concat(false);
-        buildBitsGrid(); // rebuild keeps labels correct if mode changed (also updates bulbs)
-      }
-
-      function shiftRight(){
-        if (!isTwos){
-          // logical right shift
-          bitStates = [false].concat(bitStates.slice(0, -1));
-        } else {
-          // arithmetic right shift (preserve MSB)
-          const msb = bitStates[0];
-          bitStates = [msb].concat(bitStates.slice(0, -1));
-        }
-        buildBitsGrid();
-      }
-
-      // ---------- Bit width ----------
-      function applyBitsCount(next){
-        const wanted = clamp(Number(next) || 8, 4, 64);
-        if (wanted === bitsCount) return;
-
-        // keep the right-most (LSB) bits when resizing (feels natural)
-        const old = binaryString();
-        bitsCount = wanted;
-
-        // rebuild state from old binary, keeping LSBs
-        const padded = old.slice(-bitsCount).padStart(bitsCount, "0");
-        bitStates = [...padded].map(ch => ch === "1");
-
-        document.getElementById("bitsField").value = String(bitsCount);
-        buildBitsGrid();
-      }
-
-      // ---------- Mode toggle ----------
-      function applyMode(nextIsTwos){
-        const prevDenary = denaryValue(); // keep the *value* if possible
-        isTwos = !!nextIsTwos;
-
-        // Try to keep the denary value, but clamp if it becomes invalid in the new mode
-        const { min, max } = rangeForMode();
-        const kept = clamp(prevDenary, min, max);
-        setFromDenary(kept);
-
-        buildBitsGrid();
-      }
-
-      // ---------- Wire up UI ----------
-      function wireUI(){
-        document.getElementById("btnShiftLeft").addEventListener("click", shiftLeft);
-        document.getElementById("btnShiftRight").addEventListener("click", shiftRight);
-
-        document.getElementById("btnCustomBinary").addEventListener("click", () => {
-          const val = prompt(`Enter a binary number (up to ${bitsCount} bits):`);
-          if (val === null) return;
-          if (!setFromBinary(val)) alert("Invalid input. Use only 0 and 1.");
-        });
-
-        document.getElementById("btnCustomDenary").addEventListener("click", () => {
-          const { min, max } = rangeForMode();
-          const val = prompt(`Enter a denary number (${min} to ${max}):`);
-          if (val === null) return;
-          if (!setFromDenary(val)) alert(`Invalid input. Enter an integer from ${min} to ${max}.`);
-        });
-
-        // Mode toggle
-        const modeToggle = document.getElementById("modeToggle");
-        modeToggle.addEventListener("change", () => applyMode(modeToggle.checked));
-
-        // Bit width +/- and manual entry
-        document.getElementById("btnBitsDown").addEventListener("click", () => applyBitsCount(bitsCount - 1));
-        document.getElementById("btnBitsUp").addEventListener("click", () => applyBitsCount(bitsCount + 1));
-
-        const bitsField = document.getElementById("bitsField");
-        bitsField.addEventListener("change", () => applyBitsCount(bitsField.value));
-        bitsField.addEventListener("blur", () => applyBitsCount(bitsField.value));
-        bitsField.addEventListener("keydown", (e) => {
-          if (e.key === "Enter") applyBitsCount(bitsField.value);
-        });
-      }
-
-      // ---------- Init ----------
-      function init(){
-        // default: 8-bit unsigned
-        bitsCount = 8;
-        isTwos = false;
-        bitStates = Array(bitsCount).fill(false);
-
-        document.getElementById("modeToggle").checked = false;
-        document.getElementById("bitsField").value = String(bitsCount);
-
-        wireUI();
-        buildBitsGrid();
-      }
-
-      init();
-    </script>
+    <!-- JS stays in src/ and is bundled by Astro/Vite -->
+    <script type="module" src="/src/scripts/binary.js"></script>
  </body>
 </html>
--- a/src/scripts/binary.js
+++ b/src/scripts/binary.js
@@ -0,0 +1,500 @@
+// src/scripts/binary.js
+// Computing:Box — Binary page logic (Unsigned + Two's Complement)
+// Matches IDs/classes in src/pages/binary.astro
+
+(() => {
+  /* -----------------------------
+     DOM
+  ----------------------------- */
+  const bitsGrid = document.getElementById("bitsGrid");
+  const denaryEl = document.getElementById("denaryNumber");
+  const binaryEl = document.getElementById("binaryNumber");
+  const bitsInput = document.getElementById("bitsInput");
+
+  const modeToggle = document.getElementById("modeToggle");
+  const modeHint = document.getElementById("modeHint");
+
+  const btnCustomBinary = document.getElementById("btnCustomBinary");
+  const btnCustomDenary = document.getElementById("btnCustomDenary");
+  const btnShiftLeft = document.getElementById("btnShiftLeft");
+  const btnShiftRight = document.getElementById("btnShiftRight");
+
+  const btnDec = document.getElementById("btnDec");
+  const btnInc = document.getElementById("btnInc");
+  const btnClear = document.getElementById("btnClear");
+  const btnRandom = document.getElementById("btnRandom");
+
+  const btnBitsUp = document.getElementById("btnBitsUp");
+  const btnBitsDown = document.getElementById("btnBitsDown");
+
+  const toolboxToggle = document.getElementById("toolboxToggle");
+  const toolboxPanel = document.getElementById("toolboxPanel");
+
+  /* -----------------------------
+     STATE
+  ----------------------------- */
+  let bitCount = clampInt(Number(bitsInput?.value ?? 8), 1, 64);
+
+  // bits[i] is bit value 2^i (LSB at i=0)
+  let bits = new Array(bitCount).fill(false);
+
+  // Random run timer (brief)
+  let randomTimer = null;
+
+  // Dynamic wrapping for the big binary display
+  // "nibbles per row" recalculated on resize
+  let nibblesPerRow = 2; // default for small widths
+
+  /* -----------------------------
+     HELPERS
+  ----------------------------- */
+  function clampInt(n, min, max) {
+    if (!Number.isFinite(n)) return min;
+    return Math.max(min, Math.min(max, Math.trunc(n)));
+  }
+
+  function isTwosMode() {
+    return !!modeToggle?.checked;
+  }
+
+  function pow2Big(n) {
+    return 1n << BigInt(n);
+  }
+
+  function unsignedMaxExclusive(nBits) {
+    return pow2Big(nBits); // 2^n
+  }
+
+  function unsignedMaxValue(nBits) {
+    return pow2Big(nBits) - 1n;
+  }
+
+  function twosMin(nBits) {
+    return -pow2Big(nBits - 1);
+  }
+
+  function twosMax(nBits) {
+    return pow2Big(nBits - 1) - 1n;
+  }
+
+  function bitsToUnsignedBigInt() {
+    let v = 0n;
+    for (let i = 0; i < bitCount; i++) {
+      if (bits[i]) v += pow2Big(i);
+    }
+    return v;
+  }
+
+  function unsignedBigIntToBits(vUnsigned) {
+    const span = unsignedMaxExclusive(bitCount);
+    const v = ((vUnsigned % span) + span) % span;
+    for (let i = 0; i < bitCount; i++) {
+      bits[i] = ((v >> BigInt(i)) & 1n) === 1n;
+    }
+  }
+
+  function bitsToSignedBigIntTwos() {
+    const u = bitsToUnsignedBigInt();
+    const signBit = bits[bitCount - 1] === true;
+    if (!signBit) return u;
+    return u - pow2Big(bitCount);
+  }
+
+  function signedBigIntToBitsTwos(vSigned) {
+    const span = pow2Big(bitCount); // 2^n
+    let v = vSigned;
+    v = ((v % span) + span) % span;
+    unsignedBigIntToBits(v);
+  }
+
+  function updateModeHint() {
+    if (!modeHint) return;
+    if (isTwosMode()) {
+      modeHint.textContent =
+        "Tip: In two’s complement, the left-most bit (MSB) represents a negative value.";
+    } else {
+      modeHint.textContent =
+        "Tip: In unsigned binary, all bits represent positive values.";
+    }
+  }
+
+  /* -----------------------------
+     BIG BINARY DISPLAY WRAP
+     - Determines how many nibbles (4 bits) fit per row
+     - Recalculates on window resize
+  ----------------------------- */
+  function computeNibblesPerRow() {
+    if (!binaryEl) return;
+
+    // available width for the binary number = element width
+    const w = binaryEl.getBoundingClientRect().width;
+
+    // Approximate "nibble width" in pixels:
+    // 4 digits + a space; use font size and letter-spacing to estimate.
+    // This doesn't need to be perfect, just stable and responsive.
+    const style = window.getComputedStyle(binaryEl);
+    const fontSize = parseFloat(style.fontSize || "40"); // px
+    const letterSpacing = parseFloat(style.letterSpacing || "0");
+    const digitW = fontSize * 0.62 + letterSpacing; // rough digit width
+    const nibbleW = digitW * 4 + digitW * 1.2; // include gap between nibbles
+
+    // Always allow at least 2 nibbles per row
+    const fit = Math.max(2, Math.floor(w / nibbleW));
+    nibblesPerRow = fit;
+  }
+
+  function formatBinaryGroupedWrapped() {
+    // Build MSB..LSB and group into nibbles
+    const nibbles = [];
+    let current = "";
+
+    for (let i = bitCount - 1; i >= 0; i--) {
+      current += bits[i] ? "1" : "0";
+      const posFromRight = (bitCount - i);
+      if (posFromRight % 4 === 0 || i === 0) {
+        // if last group is partial, left-pad inside the group
+        if (current.length < 4) current = current.padStart(4, "0");
+        nibbles.push(current);
+        current = "";
+      }
+    }
+
+    // Now wrap nibbles into lines
+    const lines = [];
+    for (let i = 0; i < nibbles.length; i += nibblesPerRow) {
+      lines.push(nibbles.slice(i, i + nibblesPerRow).join(" "));
+    }
+
+    return lines.join("\n");
+  }
+
+  /* -----------------------------
+     BUILD UI (BITS)
+  ----------------------------- */
+  function buildBits(count) {
+    bitCount = clampInt(count, 1, 64);
+    if (bitsInput) bitsInput.value = String(bitCount);
+
+    // preserve existing LSBs where possible
+    const oldBits = bits.slice();
+    bits = new Array(bitCount).fill(false);
+    for (let i = 0; i < Math.min(oldBits.length, bitCount); i++) bits[i] = oldBits[i];
+
+    bitsGrid.innerHTML = "";
+
+    // Render MSB..LSB left-to-right
+    for (let i = bitCount - 1; i >= 0; i--) {
+      const bitEl = document.createElement("div");
+      bitEl.className = "bit";
+
+      bitEl.innerHTML = `
+        <div class="bulb" id="bulb-${i}" aria-hidden="true">💡</div>
+        <div class="bitVal" id="bitLabel-${i}"></div>
+        <label class="switch" aria-label="Toggle bit ${i}">
+          <input type="checkbox" data-index="${i}">
+          <span class="slider"></span>
+        </label>
+      `;
+
+      bitsGrid.appendChild(bitEl);
+    }
+
+    // Hook switches
+    bitsGrid.querySelectorAll('input[type="checkbox"]').forEach((input) => {
+      input.addEventListener("change", () => {
+        const i = Number(input.dataset.index);
+        bits[i] = input.checked;
+        updateUI();
+      });
+    });
+
+    updateUI();
+  }
+
+  /* -----------------------------
+     UI UPDATE
+  ----------------------------- */
+  function updateBitLabels() {
+    // Unsigned: 2^i
+    // Two's: MSB is -2^(n-1), others are 2^i
+    for (let i = 0; i < bitCount; i++) {
+      const label = document.getElementById(`bitLabel-${i}`);
+      if (!label) continue;
+
+      if (isTwosMode() && i === bitCount - 1) {
+        label.textContent = `-${pow2Big(bitCount - 1).toString()}`;
+      } else {
+        label.textContent = pow2Big(i).toString();
+      }
+    }
+  }
+
+  function syncSwitchesToBits() {
+    bitsGrid.querySelectorAll('input[type="checkbox"]').forEach((input) => {
+      const i = Number(input.dataset.index);
+      input.checked = !!bits[i];
+    });
+  }
+
+  function updateBulbs() {
+    for (let i = 0; i < bitCount; i++) {
+      const bulb = document.getElementById(`bulb-${i}`);
+      if (!bulb) continue;
+
+      const on = bits[i] === true;
+      if (on) {
+        bulb.style.opacity = "1";
+        bulb.style.filter = "grayscale(0)";
+        bulb.style.textShadow = "0 0 14px rgba(255,216,107,.75), 0 0 26px rgba(255,216,107,.45)";
+      } else {
+        bulb.style.opacity = "0.45";
+        bulb.style.filter = "grayscale(1)";
+        bulb.style.textShadow = "none";
+      }
+    }
+  }
+
+  function updateReadout() {
+    if (!denaryEl || !binaryEl) return;
+
+    if (isTwosMode()) {
+      const signed = bitsToSignedBigIntTwos();
+      denaryEl.textContent = signed.toString();
+    } else {
+      const unsigned = bitsToUnsignedBigInt();
+      denaryEl.textContent = unsigned.toString();
+    }
+
+    // Ensure nibble wrapping is up-to-date
+    computeNibblesPerRow();
+    binaryEl.textContent = formatBinaryGroupedWrapped();
+  }
+
+  function updateUI() {
+    updateModeHint();
+    updateBitLabels();
+    syncSwitchesToBits();
+    updateBulbs();
+    updateReadout();
+  }
+
+  /* -----------------------------
+     SET FROM BINARY STRING
+  ----------------------------- */
+  function setFromBinaryString(binStr) {
+    const clean = String(binStr ?? "").replace(/\s+/g, "");
+    if (!/^[01]+$/.test(clean)) return false;
+
+    const padded = clean.slice(-bitCount).padStart(bitCount, "0");
+    for (let i = 0; i < bitCount; i++) {
+      const charFromRight = padded[padded.length - 1 - i];
+      bits[i] = charFromRight === "1";
+    }
+
+    updateUI();
+    return true;
+  }
+
+  /* -----------------------------
+     SET FROM DENARY INPUT
+  ----------------------------- */
+  function setFromDenaryInput(vStr) {
+    const raw = String(vStr ?? "").trim();
+    if (!raw) return false;
+
+    let v;
+    try {
+      if (!/^-?\d+$/.test(raw)) return false;
+      v = BigInt(raw);
+    } catch {
+      return false;
+    }
+
+    if (isTwosMode()) {
+      const min = twosMin(bitCount);
+      const max = twosMax(bitCount);
+      if (v < min || v > max) return false;
+      signedBigIntToBitsTwos(v);
+    } else {
+      if (v < 0n) return false;
+      if (v > unsignedMaxValue(bitCount)) return false;
+      unsignedBigIntToBits(v);
+    }
+
+    updateUI();
+    return true;
+  }
+
+  /* -----------------------------
+     SHIFTS
+  ----------------------------- */
+  function shiftLeft() {
+    for (let i = bitCount - 1; i >= 1; i--) bits[i] = bits[i - 1];
+    bits[0] = false;
+    updateUI();
+  }
+
+  function shiftRight() {
+    for (let i = 0; i < bitCount - 1; i++) bits[i] = bits[i + 1];
+    bits[bitCount - 1] = false;
+    updateUI();
+  }
+
+  /* -----------------------------
+     CLEAR / INC / DEC
+  ----------------------------- */
+  function clearAll() {
+    bits.fill(false);
+    updateUI();
+  }
+
+  function increment() {
+    if (isTwosMode()) {
+      const min = twosMin(bitCount);
+      const max = twosMax(bitCount);
+      let v = bitsToSignedBigIntTwos() + 1n;
+      if (v > max) v = min;
+      signedBigIntToBitsTwos(v);
+    } else {
+      const span = unsignedMaxExclusive(bitCount);
+      const v = (bitsToUnsignedBigInt() + 1n) % span;
+      unsignedBigIntToBits(v);
+    }
+    updateUI();
+  }
+
+  function decrement() {
+    if (isTwosMode()) {
+      const min = twosMin(bitCount);
+      const max = twosMax(bitCount);
+      let v = bitsToSignedBigIntTwos() - 1n;
+      if (v < min) v = max;
+      signedBigIntToBitsTwos(v);
+    } else {
+      const span = unsignedMaxExclusive(bitCount);
+      const v = (bitsToUnsignedBigInt() - 1n + span) % span;
+      unsignedBigIntToBits(v);
+    }
+    updateUI();
+  }
+
+  /* -----------------------------
+     RANDOM (BigInt-safe)
+  ----------------------------- */
+  function cryptoRandomBigInt(maxExclusive) {
+    if (maxExclusive <= 0n) return 0n;
+
+    const bitLen = maxExclusive.toString(2).length;
+    const byteLen = Math.ceil(bitLen / 8);
+
+    while (true) {
+      const bytes = new Uint8Array(byteLen);
+      crypto.getRandomValues(bytes);
+
+      let x = 0n;
+      for (const b of bytes) x = (x << 8n) | BigInt(b);
+
+      const extraBits = BigInt(byteLen * 8 - bitLen);
+      if (extraBits > 0n) x = x >> extraBits;
+
+      if (x < maxExclusive) return x;
+    }
+  }
+
+  function setRandomOnce() {
+    const span = unsignedMaxExclusive(bitCount);
+    const u = cryptoRandomBigInt(span);
+    unsignedBigIntToBits(u);
+    updateUI();
+  }
+
+  function runRandomBriefly() {
+    if (randomTimer) {
+      clearInterval(randomTimer);
+      randomTimer = null;
+    }
+
+    const start = Date.now();
+    const durationMs = 900;
+    const tickMs = 80;
+
+    randomTimer = setInterval(() => {
+      setRandomOnce();
+      if (Date.now() - start >= durationMs) {
+        clearInterval(randomTimer);
+        randomTimer = null;
+      }
+    }, tickMs);
+  }
+
+  /* -----------------------------
+     BIT WIDTH
+  ----------------------------- */
+  function setBitWidth(n) {
+    const v = clampInt(n, 1, 64);
+    buildBits(v);
+  }
+
+  /* -----------------------------
+     TOOLBOX TOGGLE
+  ----------------------------- */
+  function setToolboxCollapsed(collapsed) {
+    document.body.classList.toggle("toolbox-collapsed", collapsed);
+    toolboxToggle?.setAttribute("aria-expanded", String(!collapsed));
+  }
+
+  /* -----------------------------
+     EVENTS
+  ----------------------------- */
+  modeToggle?.addEventListener("change", () => updateUI());
+
+  btnCustomBinary?.addEventListener("click", () => {
+    const v = prompt(`Enter binary (spaces allowed). Current width: ${bitCount} bits`);
+    if (v === null) return;
+    if (!setFromBinaryString(v)) alert("Invalid binary");
+  });
+
+  btnCustomDenary?.addEventListener("click", () => {
+    const v = prompt(
+      isTwosMode()
+        ? `Enter denary (${twosMin(bitCount).toString()} to ${twosMax(bitCount).toString()}):`
+        : `Enter denary (0 to ${unsignedMaxValue(bitCount).toString()}):`
+    );
+    if (v === null) return;
+    if (!setFromDenaryInput(v)) alert("Invalid denary for current mode/bit width");
+  });
+
+  btnShiftLeft?.addEventListener("click", shiftLeft);
+  btnShiftRight?.addEventListener("click", shiftRight);
+
+  btnInc?.addEventListener("click", increment);
+  btnDec?.addEventListener("click", decrement);
+
+  btnClear?.addEventListener("click", clearAll);
+  btnRandom?.addEventListener("click", runRandomBriefly);
+
+  btnBitsUp?.addEventListener("click", () => setBitWidth(bitCount + 1));
+  btnBitsDown?.addEventListener("click", () => setBitWidth(bitCount - 1));
+
+  bitsInput?.addEventListener("change", () => setBitWidth(Number(bitsInput.value)));
+
+  toolboxToggle?.addEventListener("click", () => {
+    const collapsed = document.body.classList.contains("toolbox-collapsed");
+    setToolboxCollapsed(!collapsed);
+    // ensure binary re-wraps after layout change
+    requestAnimationFrame(() => updateReadout());
+  });
+
+  // Recompute nibble wrapping on resize
+  window.addEventListener("resize", () => {
+    // throttled via rAF to avoid spam
+    requestAnimationFrame(() => updateReadout());
+  });
+
+  /* -----------------------------
+     INIT
+  ----------------------------- */
+  updateModeHint();
+  setToolboxCollapsed(false);
+  buildBits(bitCount);
+})();
--- a/src/scripts/unsignedBinary.js
+++ b/src/scripts/unsignedBinary.js
@@ -1,54 +0,0 @@
-let bits = [128,64,32,16,8,4,2,1];
-let state = Array(8).fill(0);
-
-const denaryEl = document.getElementById("denaryNumber");
-const binaryEl = document.getElementById("binaryNumber");
-const bitEls = document.querySelectorAll(".bit");
-
-bitEls.forEach((el, i) => {
-  el.addEventListener("click", () => {
-    state[i] = state[i] ? 0 : 1;
-    el.classList.toggle("on");
-    update();
-  });
-});
-
-function update() {
-  const denary = state.reduce((sum, bit, i) => sum + bit * bits[i], 0);
-  denaryEl.textContent = denary;
-  binaryEl.textContent = state.join("");
-}
-
-function requestBinary() {
-  const input = prompt("Enter 8-bit binary:");
-  if (!/^[01]{8}$/.test(input)) return;
-  state = input.split("").map(Number);
-  bitEls.forEach((el,i)=>el.classList.toggle("on",state[i]));
-  update();
-}
-
-function requestDenary() {
-  const input = parseInt(prompt("Enter denary (0–255)"),10);
-  if (isNaN(input) || input < 0 || input > 255) return;
-
-  let value = input;
-  state = bits.map(b => {
-    if (value >= b) {
-      value -= b;
-      return 1;
-    }
-    return 0;
-  });
-
-  bitEls.forEach((el,i)=>el.classList.toggle("on",state[i]));
-  update();
-}
-
-function shiftBinary(dir) {
-  if (dir === "left") state.shift(), state.push(0);
-  if (dir === "right") state.pop(), state.unshift(0);
-  bitEls.forEach((el,i)=>el.classList.toggle("on",state[i]));
-  update();
-}
-
-update();
--- a/src/styles/base.css
+++ b/src/styles/base.css
@@ -1,52 +0,0 @@
-/* src/styles/base.css */
-@import "./md3-tokens.css";
-html, body{ height:100%; }
-body{
- margin:0;
- font-family: var(--font-sans);
- background: var(--md-surface-2);
- color: var(--md-on-surface);
-}
-a{ color: var(--md-primary); text-decoration: none; }
-a:hover{ text-decoration: underline; }
-.container{
- max-width: 1100px;
- margin: 0 auto;
- padding: 16px;
-}
-.card{
- background: var(--md-surface);
- border: 1px solid var(--md-outline);
- border-radius: var(--radius-2);
- box-shadow: var(--shadow-1);
- padding: 16px;
-}
-.btn{
- display:inline-flex;
- gap:8px;
- align-items:center;
- justify-content:center;
- border-radius: 999px;
- border: 1px solid var(--md-outline);
- background: var(--md-surface);
- color: var(--md-on-surface);
- padding: 10px 14px;
- font-weight: 600;
- cursor: pointer;
-}
-.btn:hover{ filter: brightness(0.98); }
-.btn:focus{ outline:none; box-shadow: var(--md-focus); }
-.btn-primary{
- background: var(--md-primary);
- color: var(--md-on-primary);
- border-color: transparent;
-}
-.badge{
- display:inline-block;
- padding: 2px 10px;
- border-radius: 999px;
- font-size: 12px;
- border: 1px solid var(--md-outline);
- background: var(--md-surface-2);
-}
-code, pre{ font-family: var(--font-mono); }
--- a/src/styles/binary.css
+++ b/src/styles/binary.css
@@ -1,68 +1,462 @@
-.binary-container {
-  max-width: 1100px;
-  margin: auto;
-  padding: 2rem;
-  color: #e0e0e0;
+:root{
+  --bg:#1f2027;
+  --panel2:rgba(255,255,255,.04);
+  --text:#e8e8ee;
+  --muted:#a9acb8;
+  --accent:#33ff7a;
+  --accent-dim:rgba(51,255,122,.15);
+  --line:rgba(255,255,255,.12);
+
+  /* Toolbox sizing */
+  --toolboxW: 320px;               /* default width */
+  --toolboxGap: 20px;              /* gap from right edge */
+  --toolboxTop: 92px;              /* below header area */
 }

-.display {
-  text-align: center;
+/* ---------- Fonts ---------- */
+/* Numbers */
+@font-face{
+  font-family:"DSEG7ClassicRegular";
+  src:
+    url("/fonts/DSEG7Classic-Regular.woff") format("woff"),
+    url("/fonts/DSEG7Classic-Regular.ttf") format("truetype");
+  font-weight:400;
+  font-style:normal;
+  font-display:swap;
 }

-.label {
-  font-size: 1.2rem;
-  opacity: 0.7;
+/* Text */
+@font-face{
+  font-family:"SevenSegment";
+  src:
+    url("/fonts/Seven-Segment.woff2") format("woff2"),
+    url("/fonts/Seven-Segment.woff") format("woff");
+  font-weight:400;
+  font-style:normal;
+  font-display:swap;
 }

-.number {
-  font-size: 3rem;
-  margin-bottom: 1rem;
-  color: #00ff66;
+*{ box-sizing:border-box; }
+
+body{
+  margin:0;
+  background:var(--bg);
+  color:var(--text);
+  font-family:"SevenSegment", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
 }

-.controls {
-  margin-top: 1rem;
+/* When toolbox is collapsed, we remove the reserved padding */
+body.toolbox-collapsed{
+  --toolboxW: 0px;
 }

-.controls button {
-  margin: 0.25rem;
-  padding: 0.6rem 1rem;
-  font-size: 1rem;
+/* ---------- Main layout ---------- */
+.wrap{
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: 32px 20px 60px;
+
+  /* reserve room for the fixed toolbox so it NEVER overlaps */
+  padding-right: calc(20px + var(--toolboxW) + var(--toolboxGap));
+  transition: padding-right .2s ease;
 }

-.bits {
-  display: grid;
-  grid-template-columns: repeat(8, 1fr);
-  gap: 1rem;
-  margin-top: 3rem;
+body.toolbox-collapsed .wrap{
+  padding-right: 20px;
 }

-.bit {
-  width: 40px;
-  height: 80px;
-  background: #333;
-  border-radius: 20px;
-  position: relative;
-  cursor: pointer;
+.topGrid{
+  display:grid;
+  grid-template-columns: 1fr;
+  gap:28px;
+  align-items:start;
 }

-.bit::after {
-  content: "";
-  width: 32px;
-  height: 32px;
-  background: #555;
-  border-radius: 50%;
-  position: absolute;
-  bottom: 6px;
-  left: 4px;
-  transition: all 0.2s ease;
+.readout{
+  text-align:center;
+  padding:10px 10px 0;
 }

-.bit.on {
-  background: #00c853;
+.label{
+  letter-spacing:.18em;
+  font-weight:700;
+  color:var(--muted);
+  text-transform:uppercase;
+  font-size:14px;
+  margin-top:10px;
 }

-.bit.on::after {
-  bottom: 42px;
-  background: #eaffea;
+/* All numbers */
+.num,
+.bitVal,
+.bitInput{
+  font-family:"DSEG7ClassicRegular", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
+  font-weight:400;
+}
+
+/* Denary/Binary display (25% smaller than before) */
+.num{
+  color:var(--accent);
+  text-shadow:0 0 18px var(--accent-dim);
+  letter-spacing: 0.03em; /* + a pixel-ish feel */
+}
+
+.denaryValue{
+  font-size: 52px; /* was ~70 */
+  line-height:1.0;
+  margin:6px 0 10px;
+}
+
+.binaryValue{
+  font-size: 39px; /* was ~52 */
+  line-height:1.05;
+  margin:6px 0 14px;
+  white-space: pre-wrap;
+  word-break: normal;
+  overflow-wrap: normal;
+  letter-spacing: 0.06em; /* widen characters slightly */
+}
+
+/* Buttons */
+.controlsStack{
+  margin-top:10px;
+  display:flex;
+  flex-direction:column;
+  gap:10px;
+  align-items:center;
+}
+
+.controlsRow{
+  display:flex;
+  gap:12px;
+  justify-content:center;
+  flex-wrap:wrap;
+}
+
+.btn{
+  background:rgba(255,255,255,.06);
+  border:1px solid rgba(255,255,255,.14);
+  color:#fff;
+  padding:12px 14px;
+  border-radius:12px;
+  font-weight:700;
+  cursor:pointer;
+  min-width:170px;
+  font-family:"SevenSegment", system-ui, sans-serif;
+  letter-spacing: .06em;
+}
+.btn:active{ transform: translateY(1px); }
+
+.btnAccent{
+  background:rgba(51,255,122,.18);
+  border-color:rgba(51,255,122,.45);
+}
+
+.divider{
+  margin-top:26px;
+  border-top:1px solid var(--line);
+}
+
+/* ---------- Bits grid ---------- */
+.bitsWrap{ margin-top:22px; }
+
+/* auto-fit prevents overlap at large values without shrinking the digits */
+.bitsGrid{
+  display:grid;
+  gap:18px;
+  justify-content:center;
+  padding-top:18px;
+
+  /* each tile has a safe min width so large labels don't collide */
+  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
+  max-width: 100%;
+}
+
+.bit{
+  display:flex;
+  flex-direction:column;
+  align-items:center;
+  gap:10px;
+  padding:8px 4px;
+  text-align:center;
+  min-width:120px;
+}
+
+.bulb{
+  /* NO circle/ring. Just the emoji. 25% bigger than prior ~26px -> ~33px */
+  font-size: 33px;
+  line-height:1;
+  background:transparent;
+  border:none;
+  width:auto;
+  height:auto;
+  opacity:.45;
+  filter: grayscale(1);
+  text-shadow:none;
+  user-select:none;
+}
+
+.bitVal{
+  font-size:28px;
+  color:var(--text);
+  opacity:.95;
+  line-height:1;
+  min-height:32px;
+  white-space: nowrap; /* stop wrapping into each other */
+  letter-spacing: 0.02em;
+}
+
+/* Shared toggle switch (bit switches + mode) */
+.switch{
+  position:relative;
+  width:56px;
+  height:34px;
+  display:inline-block;
+  flex:0 0 auto;
+}
+.switch input{
+  opacity:0;
+  width:0;
+  height:0;
+}
+.slider{
+  position:absolute;
+  inset:0;
+  background:rgba(255,255,255,.10);
+  border:1px solid rgba(255,255,255,.14);
+  border-radius:999px;
+  transition:.18s ease;
+}
+.slider::before{
+  content:"";
+  position:absolute;
+  height:28px;
+  width:28px;
+  left:3px;
+  top:2px;
+  background:rgba(255,255,255,.92);
+  border-radius:50%;
+  transition:.18s ease;
+}
+.switch input:checked + .slider{
+  background:rgba(51,255,122,.20);
+  border-color:rgba(51,255,122,.55);
+}
+.switch input:checked + .slider::before{
+  transform: translateX(22px);
+  background:var(--accent);
+}
+
+/* ---------- Toolbox (fixed, non-overlapping) ---------- */
+.toolboxToggle{
+  position: fixed;
+  top: 18px;
+  right: var(--toolboxGap);
+  z-index: 40;
+
+  display:flex;
+  align-items:center;
+  gap:10px;
+
+  background: rgba(255,255,255,.06);
+  border:1px solid rgba(255,255,255,.14);
+  color:#fff;
+  border-radius: 12px;
+  padding: 10px 12px;
+  cursor:pointer;
+
+  font-family:"SevenSegment", system-ui, sans-serif;
+  letter-spacing:.06em;
+}
+
+.toolboxIcon{ font-size: 16px; line-height:1; }
+.toolboxText{ font-weight:800; font-size: 14px; }
+
+.toolboxFixed{
+  position: fixed;
+  top: var(--toolboxTop);
+  right: var(--toolboxGap);
+  width: var(--toolboxW);
+  z-index: 35;
+
+  transition: transform .2s ease, opacity .2s ease;
+}
+
+body.toolbox-collapsed .toolboxFixed{
+  transform: translateX(calc(100% + var(--toolboxGap)));
+  opacity: 0;
+  pointer-events: none;
+}
+
+/* cards inside toolbox */
+.panelCol{
+  display:flex;
+  flex-direction:column;
+  gap:14px;
+}
+
+.card{
+  background: var(--panel2);
+  border:1px solid rgba(255,255,255,.10);
+  border-radius:14px;
+  padding:14px;
+  backdrop-filter: blur(6px);
+}
+
+.cardTitle{
+  letter-spacing:.18em;
+  font-weight:800;
+  color:var(--muted);
+  text-transform:uppercase;
+  font-size:12px;
+  margin:0 0 10px;
+}
+
+.hint{
+  color:var(--muted);
+  font-size:12px;
+  margin-top:8px;
+  line-height:1.35;
+}
+
+.toggleRow{
+  display:flex;
+  align-items:center;
+  justify-content:space-between;
+  gap:10px;
+}
+
+.toggleLabel{
+  color:var(--text);
+  font-weight:700;
+  font-size:14px;
+}
+
+/* ---------- Tools merged layout ---------- */
+.toolsTopRow{
+  display:grid;
+  grid-template-columns: 1fr 1fr;
+  gap:10px;
+  align-items:center;
+  margin-bottom: 10px;
+}
+
+.spinGroup{
+  display:grid;
+  grid-template-columns: 1fr 1fr;
+  gap:10px;
+}
+
+.toolsBottomRow{
+  display:grid;
+  grid-template-columns: 1.25fr 0.75fr; /* bit width gets more space than random */
+  gap:10px;
+  align-items:end;
+}
+
+.toolBtn{
+  height:48px;
+  border-radius:12px;
+  background:rgba(255,255,255,.06);
+  border:1px solid rgba(255,255,255,.14);
+  color:#fff;
+  cursor:pointer;
+  font-weight:800;
+  font-family:"SevenSegment", system-ui, sans-serif;
+  letter-spacing:.06em;
+}
+
+.toolSpin{
+  font-size:22px;
+  width: 100%; /* kept narrow via grid allocation */
+}
+
+.toolDown{
+  background: rgba(255, 70, 70, .20);
+  border-color: rgba(255, 70, 70, .45);
+}
+
+.toolUp{
+  background: rgba(51,255,122,.20);
+  border-color: rgba(51,255,122,.55);
+}
+
+.toolReset{
+  width: 100%;
+}
+
+.toolRandom{
+  width: 100%;
+  /* make random ~5% narrower by padding reduction (without breaking grid) */
+  padding-left: 10px;
+  padding-right: 10px;
+}
+
+/* bit width mini block */
+.bitWidthMini{
+  display:flex;
+  flex-direction:column;
+  gap:6px;
+}
+
+.bitWidthMiniLabel{
+  color:var(--muted);
+  font-size:12px;
+  font-weight:800;
+  letter-spacing:.18em;
+  text-transform:uppercase;
+}
+
+.bitWidthMiniRow{
+  display:grid;
+  grid-template-columns: 44px 1fr 44px;
+  gap:10px;
+  align-items:center;
+}
+
+.miniBtn{
+  height:44px;
+  width:44px;
+  border-radius:12px;
+  background:rgba(255,255,255,.06);
+  border:1px solid rgba(255,255,255,.14);
+  color:#fff;
+  cursor:pointer;
+  font-weight:900;
+  font-size:18px;
+  font-family:"SevenSegment", system-ui, sans-serif;
+}
+
+.bitInput{
+  width: 100%;
+  min-width: 64px;     /* MUST fit 2 digits comfortably */
+  text-align:center;
+  background:rgba(255,255,255,.06);
+  border:1px solid rgba(255,255,255,.14);
+  border-radius:12px;
+  padding:10px 8px;
+  outline:none;
+  color:var(--accent);
+  font-size:28px;
+}
+
+.bitInput::-webkit-outer-spin-button,
+.bitInput::-webkit-inner-spin-button{
+  -webkit-appearance:none;
+  margin:0;
+}
+
+/* ---------- Responsive ---------- */
+@media (max-width: 980px){
+  .wrap{
+    /* On small screens, don’t reserve fixed sidebar space; toolbox floats */
+    padding-right: 20px;
+  }
+  .toolboxFixed{
+    width: min(320px, calc(100vw - 40px));
+  }
+}
+
+@media (max-width: 520px){
+  .btn{ min-width:150px; }
 }
--- a/src/styles/fonts.css
+++ b/src/styles/fonts.css
@@ -1,11 +0,0 @@
-@font-face {
-  font-family: "DSEG7";
-  src: url("/fonts/DSEG7Classic-Regular.ttf") format("truetype");
-  font-weight: normal;
-  font-style: normal;
-}
-
-.dseg {
-  font-family: "DSEG7", monospace;
-  letter-spacing: 0.15em;
-}
--- a/src/styles/global.css
+++ b/src/styles/global.css
@@ -0,0 +1,85 @@
+:root{
+  --bg: #1f2027;
+  --panel: #22242d;
+  --panel2: rgba(255,255,255,.04);
+  --text: #e8e8ee;
+  --muted: #a9acb8;
+  --accent: #33ff7a;
+  --accent-dim: rgba(51,255,122,.15);
+  --line: rgba(255,255,255,.12);
+}
+
+*{ box-sizing:border-box; }
+
+body{
+  margin:0;
+  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
+  background: var(--bg);
+  color: var(--text);
+}
+
+.siteHeader{
+  position: sticky;
+  top: 0;
+  z-index: 10;
+  background: rgba(0,0,0,.15);
+  backdrop-filter: blur(8px);
+  border-bottom: 1px solid rgba(255,255,255,.06);
+}
+
+.siteHeaderInner{
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: 14px 20px;
+  display:flex;
+  align-items:center;
+  justify-content:space-between;
+  gap: 16px;
+}
+
+.brand{
+  color: var(--text);
+  text-decoration:none;
+  font-weight: 900;
+  letter-spacing:.02em;
+}
+
+.nav{
+  display:flex;
+  gap: 14px;
+  flex-wrap:wrap;
+  justify-content:flex-end;
+}
+.nav a{
+  color: var(--muted);
+  text-decoration:none;
+  font-weight: 700;
+  font-size: 14px;
+}
+.nav a:hover{ color: var(--text); }
+
+.siteMain{
+  min-height: calc(100vh - 140px);
+}
+
+.siteFooter{
+  border-top: 1px solid rgba(255,255,255,.08);
+  margin-top: 32px;
+  background: rgba(0,0,0,.10);
+}
+
+.siteFooterInner{
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: 18px 20px 26px;
+  color: var(--muted);
+  font-size: 12px;
+  line-height: 1.6;
+}
+
+.footerTitle{
+  color: var(--text);
+  opacity:.9;
+  font-weight: 800;
+  margin-bottom: 6px;
+}
--- a/src/styles/md3-tokens.css
+++ b/src/styles/md3-tokens.css
@@ -1,43 +0,0 @@
-/* src/styles/md3-tokens.css */
-/* MD3-inspired tokens tuned for education: high readability, clear contrast, calm surfaces */
-:root{
- /* Typography */
- --font-sans: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
- --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
- /* Spacing + shape */
- --radius-1: 10px;
- --radius-2: 16px;
- --radius-3: 22px;
- --shadow-1: 0 1px 2px rgba(0,0,0,.08), 0 2px 8px rgba(0,0,0,.06);
- /* Color roles (keep simple) */
- --md-surface: #ffffff;
- --md-surface-2: #f6f7fb;
- --md-on-surface: #111318;
- --md-primary: #2f6fed; /* calm blue */
- --md-on-primary: #ffffff;
- --md-secondary: #5a5f72; /* muted */
- --md-on-secondary: #ffffff;
- --md-tertiary: #0f766e; /* teal for "practical" tools */
- --md-on-tertiary: #ffffff;
- --md-outline: #d7dbe7;
- --md-success: #1a7f37;
- --md-warning: #b54708;
- --md-danger: #b42318;
- /* Focus ring for accessibility */
- --md-focus: 0 0 0 3px rgba(47,111,237,.28);
-}
-@media (prefers-color-scheme: dark){
- :root{
- --md-surface: #0b0e14;
- --md-surface-2: #121725;
- --md-on-surface: #e8eaf2;
- --md-primary: #9bb6ff;
- --md-on-primary: #0b0e14;
- --md-secondary: #b8bccd;
- --md-on-secondary: #0b0e14;
- --md-tertiary: #4fd1c5;
- --md-on-tertiary: #0b0e14;
- --md-outline: #2b3244;
- --md-focus: 0 0 0 3px rgba(155,182,255,.25);
- }
-}
--- a/src/styles/site.css
+++ b/src/styles/site.css
@@ -0,0 +1,75 @@
+:root{
+  --bg: #1f2027;
+  --panel: rgba(255,255,255,.04);
+  --panel-border: rgba(255,255,255,.10);
+  --text: #e8e8ee;
+  --muted: #a9acb8;
+  --accent: #33ff7a;
+  --accent-dim: rgba(51,255,122,.15);
+  --line: rgba(255,255,255,.12);
+}
+
+*{ box-sizing: border-box; }
+
+body{
+  margin:0;
+  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
+  background: var(--bg);
+  color: var(--text);
+}
+
+.site-header{
+  border-bottom: 1px solid rgba(255,255,255,.08);
+  background: rgba(0,0,0,.12);
+}
+
+.site-header__inner{
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: 14px 20px;
+  display:flex;
+  align-items:center;
+  justify-content:space-between;
+  gap: 18px;
+}
+
+.brand{
+  font-weight: 800;
+  letter-spacing: .02em;
+}
+
+.nav{
+  display:flex;
+  gap: 14px;
+  flex-wrap: wrap;
+  justify-content:flex-end;
+}
+
+.nav__link{
+  color: var(--muted);
+  text-decoration:none;
+  font-weight: 700;
+  font-size: 13px;
+}
+.nav__link:hover{ color: var(--text); }
+
+.site-main{
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: 28px 20px 40px;
+  min-height: calc(100vh - 140px);
+}
+
+.site-footer{
+  border-top: 1px solid rgba(255,255,255,.08);
+  background: rgba(0,0,0,.10);
+}
+
+.site-footer__inner{
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: 16px 20px;
+  color: var(--muted);
+  font-size: 12px;
+  line-height: 1.5;
+}
Author	SHA1	Message	Date
Alexander Lyall	f68aea4e33	Binary Page Beta 1 Signed-off-by: Alexander Lyall <alex@adcm.uk>	2025-12-16 17:18:03 +00:00
Alexander Lyall	91a07e49ae	feat(v2-alpha): add collapsible toolbox and refine binary simulator layout - Introduce collapsible right-hand toolbox for the binary simulator - Pin toolbox to the right edge with responsive fallback on smaller screens - Rework tools and bit-width controls into a shared side layout - Adjust control sizing, spacing, and visual hierarchy for clarity Notes: - Toolbox collapse is functional but requires refinement - Tools and Bit Width should be merged into a single module/card - Collapsed state does not yet fully hide the panel or re-centre content Signed-off-by: Alexander Lyall <alex@adcm.uk>	2025-12-16 15:13:18 +00:00
Alexander Lyall	1519032f5b	Fixed the dual bulb issue, added new font to typeface package Signed-off-by: Alexander Lyall <alex@adcm.uk>	2025-12-16 14:27:51 +00:00
Alexander Lyall	8d701a7704	Update to increment/decrement buttons and rearrangement of buttons. Page now broken... Signed-off-by: Alexander Lyall <alex@adcm.uk>	2025-12-16 13:04:21 +00:00
Alexander Lyall	ac585701a3	Fix broken code Signed-off-by: Alexander Lyall <alex@adcm.uk>	2025-12-16 11:30:59 +00:00
Alexander Lyall	002fbb8b6c	Addition of increment/decrement buttons, addition of Auto Random button Signed-off-by: Alexander Lyall <alex@adcm.uk>	2025-12-16 11:19:51 +00:00
Alexander Lyall	e6da9c8c98	Tweaks to Binary UI Signed-off-by: Alexander Lyall <alex@adcm.uk>	2025-12-15 19:58:34 +00:00
Alexander Lyall	d4765b3788	feat(v2-alpha): refactor binary simulator and introduce shared site layout - Rewrite binary simulator with unified unsigned and two’s complement logic - Support dynamic bit widths from 4 to 64 with LSB-preserving resizing - Replace legacy unsigned-only scripts with a single maintainable implementation - Extract binary styles into dedicated CSS and add global site styling - Introduce shared header, footer, and base layout components - Migrate Binary page to BaseLayout and modular assets Signed-off-by: Alexander Lyall <alex@adcm.uk>	2025-12-14 19:46:23 +00:00