Give untimed lyrics one uniform line size in service mode

frontend/app.js

@@ -2353,8 +2353,9 @@ function updateNowPlayingActions() {
 // Used by service-mode lyrics and the presenter view. Measured with a hidden
 // real .sl-line (same font rules) in two passes: the display font has an
 // optical-size axis, so glyphs get relatively WIDER as the size drops and a
-// single measurement at 100px over-fits on small screens. Sets --fit per row.
-function fitLyricLines(list, { maxShare = 0.17, maxPx = 160 } = {}) {
+// single measurement at 100px over-fits on small screens. Sets --fit per row;
+// with `uniform` every row gets the smallest fit, so all lines share one size.
+function fitLyricLines(list, { maxShare = 0.17, maxPx = 160, uniform = false } = {}) {
   if (!list) return;
   const rows = [...list.querySelectorAll('.sl-line')];
   if (!rows.length || !list.clientWidth) return;
@@ -2367,6 +2368,7 @@ function fitLyricLines(list, { maxShare = 0.17, maxPx = 160 } = {}) {
   probe.style.cssText = 'position:absolute;left:0;top:0;visibility:hidden;white-space:nowrap;width:auto;padding:0;font-size:100px;transition:none';
   list.appendChild(probe);
   const widthAt = (px) => { probe.style.fontSize = px + 'px'; return probe.getBoundingClientRect().width; };
+  const fits = [];
   for (const el of rows) {
     probe.textContent = el.textContent;
     const w100 = widthAt(100);
@@ -2377,8 +2379,13 @@ function fitLyricLines(list, { maxShare = 0.17, maxPx = 160 } = {}) {
       px = Math.floor(clamp(wEst ? est * (width / wEst) : est));
     }
     el.style.setProperty('--fit', px + 'px');
+    fits.push(px);
   }
   probe.remove();
+  if (uniform) {
+    const px = Math.min(...fits);
+    rows.forEach((el) => el.style.setProperty('--fit', px + 'px'));
+  }
 }
 
 // ============================================================================
@@ -3086,7 +3093,15 @@ const Notes = (() => {
   const serviceAuto = () => data.settings.serviceLyricsAutoscroll !== false;
   const sungLines = () => lines().map((l, i) => ({ ...l, i })).filter((l) => l.kind === 'line');
 
-  function applyFits() { fitLyricLines($('serviceLyricsList')); }
+  // Plain (untimed) lyrics have no sung line to spotlight, so every line gets
+  // the same size — the largest at which the longest line still fits one row.
+  const plainLyrics = () => { const l = sungLines(); return l.length > 0 && l.every((x) => x.t === null || x.t === undefined); };
+  function applyFits() {
+    const list = $('serviceLyricsList');
+    const plain = plainLyrics();
+    list.classList.toggle('plain', plain);
+    fitLyricLines(list, { uniform: plain });
+  }
 
   function renderServiceButtons() {
     const on = !!data.settings.serviceLyrics;

frontend/styles.css

@@ -3813,6 +3813,8 @@ body.remote-open { overflow: hidden; }
   text-shadow: 0 0 32px var(--accent-glow);
 }
 .sl-line.untimed { cursor: default; }
+/* Plain lyrics (no timings): one shared --fit, every line full size. */
+.sl-list.plain .sl-line { font-size: var(--fit, 40px); opacity: 0.92; color: var(--text); }
 .sl-empty {
   display: flex; flex-direction: column; gap: 10px; align-items: center;
   font-size: clamp(22px, 4vw, 40px); font-weight: 700; color: var(--text-2);