plus d'espace pour les export typo variable, ui css

web/modules/custom/leshed_svg_export/js/svg-export.js

@@ -72,12 +72,21 @@
    * positioned glyph path. Nothing here recomputes layout — it only reads
    * what the browser already laid out at the moment of the click.
    */
+  // Fraction of the largest font size on the title, added as padding around
+  // the whole canvas. Italic glyphs slant past their own nominal advance
+  // box (most visibly at the top of ascenders), and the title's own
+  // getBoundingClientRect() doesn't account for that overflow — a tightly
+  // fitted viewBox clips them. This margin is a generous, font-agnostic
+  // safety net rather than measuring each glyph's exact ink bounds.
+  const ITALIC_OVERFLOW_MARGIN_RATIO = 0.3;
+
   async function buildSvg(titleEl, glyphFor, hb) {
     const containerRect = titleEl.getBoundingClientRect();
     const chars = Array.from(titleEl.querySelectorAll('.char'));
 
     const seenWords = new Set();
     const glyphNodes = [];
+    let maxFontSizePx = 0;
     for (const charEl of chars) {
       const rawText = charEl.textContent;
       if (!rawText || !rawText.trim()) continue;
@@ -86,6 +95,7 @@
       const computed = getComputedStyle(charEl);
       const fontSizePx = parseFloat(computed.fontSize);
       if (!fontSizePx) continue;
+      maxFontSizePx = Math.max(maxFontSizePx, fontSizePx);
 
       const text = applyTextTransform(rawText, computed.textTransform, charEl, seenWords);
 
@@ -101,11 +111,12 @@
       );
     }
 
-    const width = containerRect.width;
-    const height = containerRect.height;
+    const margin = maxFontSizePx * ITALIC_OVERFLOW_MARGIN_RATIO;
+    const width = containerRect.width + margin * 2;
+    const height = containerRect.height + margin * 2;
     const svg = [
       `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 ${width.toFixed(2)} ${height.toFixed(2)}" width="${width.toFixed(2)}" height="${height.toFixed(2)}">`,
-      '<g fill="#000000">',
+      `<g fill="#000000" transform="translate(${margin.toFixed(2)}, ${margin.toFixed(2)})">`,
       ...glyphNodes,
       '</g>',
       '</svg>',