Add area and firmware picker and fix code copy buttons

docs/assets/javascripts/scopes-picker.js

@@ -0,0 +1,25 @@
+// Show the region commands that match the selected area and firmware version.
+(function () {
+  function setUp(picker) {
+    var area = picker.querySelector("[data-scp-area]");
+    var firmware = picker.querySelector("[data-scp-firmware]");
+    var group = picker.closest("[data-scp-picker-group]") || document;
+    var variants = group.querySelectorAll("[data-scp-variant]");
+
+    function update() {
+      variants.forEach(function (variant) {
+        variant.hidden = !(
+          variant.getAttribute("data-area") === area.value &&
+          variant.getAttribute("data-firmware") === firmware.value
+        );
+      });
+    }
+
+    area.addEventListener("change", update);
+    firmware.addEventListener("change", update);
+    picker.hidden = false;
+    update();
+  }
+
+  document.querySelectorAll("[data-scp-picker]").forEach(setUp);
+})();

docs/assets/styles/base.css

@@ -137,12 +137,20 @@ summary {
 }
 
 .md-button,
-button:not(.md-search__icon),
+button:not(.md-search__icon):not(.md-code__button),
 select,
 input:not([type="checkbox"]):not([type="radio"]):not(.md-search__input) {
   min-height: var(--mc-target-size);
 }
 
+/* Code copy buttons sit inside the code block. The general 44px minimum made
+   them taller than one-line blocks, so they hung out below and were hard to
+   tap. A 28px square still meets the WCAG 2.2 24px target size. */
+.md-typeset .md-code__button {
+  width: 1.75rem;
+  height: 1.75rem;
+}
+
 .md-typeset .md-button {
   border-radius: var(--mc-radius-sm);
   padding: 0.6rem 1rem;

docs/assets/styles/scopes-proposal.css

@@ -816,3 +816,126 @@
   display: block;
   border-radius: var(--mc-radius-md);
 }
+
+/* ---------- Command picker ---------- */
+
+.md-typeset .scp-picker-group {
+  margin: var(--mc-space-4) 0 var(--mc-space-6);
+  overflow: hidden;
+  border: 1px solid var(--mc-color-border);
+  border-radius: var(--mc-radius-lg);
+  background: var(--mc-color-surface);
+  box-shadow: var(--mc-shadow-1);
+}
+
+.scp-picker {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
+  gap: var(--mc-space-3);
+  padding: var(--mc-space-4);
+  border-bottom: 1px solid var(--mc-color-border);
+  background:
+    linear-gradient(135deg, var(--scp-city-bg), transparent 70%),
+    var(--mc-color-surface-raised);
+}
+
+.scp-picker[hidden] {
+  display: none;
+}
+
+.scp-picker__field {
+  display: grid;
+  gap: 0.35rem;
+  color: var(--mc-color-text-muted);
+  font-size: 0.72rem;
+  font-weight: 760;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+}
+
+.scp-picker__field select {
+  width: 100%;
+  padding: 0 2.2rem 0 var(--mc-space-3);
+  border: 1px solid var(--mc-color-border);
+  border-radius: var(--mc-radius-md);
+  background-color: var(--mc-color-surface);
+  background-image: linear-gradient(45deg, transparent 50%, currentcolor 50%),
+    linear-gradient(135deg, currentcolor 50%, transparent 50%);
+  background-position: calc(100% - 1.1rem) 50%, calc(100% - 0.75rem) 50%;
+  background-repeat: no-repeat;
+  background-size: 0.35rem 0.35rem;
+  color: var(--mc-color-text);
+  font-size: 0.95rem;
+  font-weight: 600;
+  letter-spacing: normal;
+  text-transform: none;
+  appearance: none;
+  cursor: pointer;
+}
+
+.scp-picker__field select:focus-visible {
+  outline: 3px solid var(--mc-color-focus);
+  outline-offset: 2px;
+}
+
+.md-typeset .scp-variant {
+  padding: var(--mc-space-4);
+  counter-reset: scp-cmd;
+}
+
+.md-typeset .scp-variant + .scp-variant {
+  border-top: 1px solid var(--mc-color-border);
+}
+
+.md-typeset .scp-variant__label {
+  display: inline-block;
+  margin: 0 0 var(--mc-space-3);
+  padding: 0.2rem 0.65rem;
+  border-radius: 999px;
+  background: var(--scp-city-bg);
+  color: var(--scp-city);
+  font-size: 0.75rem;
+  font-weight: 760;
+}
+
+.md-typeset .scp-variant .highlight {
+  position: relative;
+  margin: 0 0 var(--mc-space-2) 2rem;
+  counter-increment: scp-cmd;
+}
+
+.md-typeset .scp-variant .highlight::before {
+  position: absolute;
+  top: 50%;
+  left: -2rem;
+  display: grid;
+  width: 1.4rem;
+  height: 1.4rem;
+  place-items: center;
+  border-radius: 999px;
+  background: var(--mc-color-surface-raised);
+  border: 1px solid var(--mc-color-border);
+  color: var(--mc-color-text-muted);
+  content: counter(scp-cmd);
+  font-size: 0.7rem;
+  font-weight: 800;
+  transform: translateY(-50%);
+}
+
+.md-typeset .scp-variant .highlight pre {
+  margin: 0;
+}
+
+.md-typeset .scp-variant > p:not(.scp-variant__label) {
+  margin: var(--mc-space-3) 0 0;
+  padding: var(--mc-space-3);
+  border-left: 0.25rem solid var(--mc-color-warning);
+  border-radius: var(--mc-radius-sm);
+  background: var(--mc-color-surface-raised);
+  font-size: 0.82rem;
+}
+
+.md-typeset .scp-variant .highlight code {
+  padding-right: 2.75rem;
+  white-space: pre-wrap;
+}