Add Vue + Vite port of the logo generator

Single-file component (App.vue) over the shared src/logo.js core.
Reactive state via reactive(); v-model drives controls, computed
properties produce the live logo style and generated CSS. Keeps the
accessibility markup (labels, aria, <details>/<summary>, focus
rings); reset restores defaults through the form's @reset handler.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/logo.js

@@ -0,0 +1,99 @@
+// Framework-agnostic core for the logo generator.
+// State shape (see `defaults`) is shared by every port.
+
+export const defaults = {
+  text: 'LIBRE\nTECH',
+  font: 'Anton',
+  fs: 18,
+  lh: 1.05,
+  ls: 0.01,
+  bg: '#362582',
+  face: '#f6d939',
+  depth: '#ea741e',
+  shadow: '#221953',
+  angle: 133,
+  shadowLen: 30,
+  depthLen: 15,
+  contourLen: 11,
+  rot: -10,
+  skew: -8,
+};
+
+export const fonts = [
+  'Anton',
+  'Bowlby One',
+  'Bebas Neue',
+  'Bungee',
+  'Passion One',
+  'Ultra',
+  'Impact',
+];
+
+const round = (n) => Math.round(n * 100) / 100;
+
+// Layered text-shadow offsets. `depthColor`/`shadowColor` are substituted
+// so the same geometry serves both the live render (literal hex) and the
+// generated snippet (CSS var()).
+export function shadowLayers(s, depthColor, shadowColor) {
+  const rad = (s.angle * Math.PI) / 180;
+  const dx = Math.sin(rad);
+  const dy = -Math.cos(rad);
+  const parts = [];
+  // Kontur (front): steps along the light direction, shadow colour.
+  for (let i = 1; i <= s.contourLen; i++) {
+    parts.push(`${round(dx * i)}px ${round(dy * i)}px 0 ${shadowColor}`);
+  }
+  // Tiefe (middle): opposite direction.
+  for (let i = 1; i <= s.depthLen; i++) {
+    parts.push(`${round(-dx * i)}px ${round(-dy * i)}px 0 ${depthColor}`);
+  }
+  // Schatten (back): long, same direction as Kontur; continue past
+  // contourLen so steps do not overlap.
+  for (let i = s.contourLen + 1; i <= s.contourLen + s.shadowLen; i++) {
+    parts.push(`${round(dx * i)}px ${round(dy * i)}px 0 ${shadowColor}`);
+  }
+  return parts;
+}
+
+export function inlineTextShadow(s) {
+  const parts = shadowLayers(s, s.depth, s.shadow);
+  return parts.length ? parts.join(', ') : 'none';
+}
+
+export function logoStyle(s) {
+  return {
+    fontFamily: `'${s.font}', 'Bebas Neue', Impact, sans-serif`,
+    fontSize: `${s.fs}vw`,
+    lineHeight: String(s.lh),
+    letterSpacing: `${s.ls}em`,
+    color: s.face,
+    transform: `rotate(${s.rot}deg) skewX(${s.skew}deg)`,
+    textShadow: inlineTextShadow(s),
+  };
+}
+
+export function cssOutput(s) {
+  const lines = shadowLayers(s, 'var(--depth)', 'var(--shadow)').map((l) => '    ' + l);
+  return `:root {
+  --bg:     ${s.bg};
+  --face:   ${s.face};
+  --depth:  ${s.depth};
+  --shadow: ${s.shadow};
+}
+
+body {
+  background: var(--bg);
+}
+
+.logo {
+  font-family: '${s.font}', sans-serif;
+  font-size: ${s.fs}vw;
+  line-height: ${s.lh};
+  letter-spacing: ${s.ls}em;
+  color: var(--face);
+  transform: rotate(${s.rot}deg) skewX(${s.skew}deg);
+  white-space: pre-line;
+  text-shadow:
+${lines.join(',\n')};
+}`;
+}