Addition of increment/decrement buttons, addition of Auto Random button

Signed-off-by: Alexander Lyall <alex@adcm.uk>

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;
+}