diff --git a/web/zebra-spaces.html b/web/zebra-spaces.html
index 3b0063d..d38fe44 100644
--- a/web/zebra-spaces.html
+++ b/web/zebra-spaces.html
@@ -51,6 +51,13 @@
   html.theme-dark .dot.ok { background: #0a0; border-color: #0a0; }
   html.theme-dark .meter { background: #000; border-color: #444; }
   html.theme-dark .meter-fill { background: #ccc; }
+  /* dark mode: tile chrome flips back to the night palette */
+  html.theme-dark .screen-tile,
+  html.theme-dark .camera-tile { background: #000; border-color: #000; }
+  html.theme-dark .screen-tile video,
+  html.theme-dark .camera-tile video { background: #000; }
+  html.theme-dark .screen-tile .screen-meta,
+  html.theme-dark .camera-tile .screen-meta { background: #111; color: #ddd; }
   /* badges */
   html.theme-dark .badge.host    { background: #ccc; color: #000; border-color: #ccc; }
   html.theme-dark .badge.cohost  { background: #666; color: #000; border-color: #666; }
@@ -205,15 +212,18 @@
    * When sec-screens is shown the game tabs + iframe are hidden so the
    * screen owns the column. */
   #screens { display: grid; grid-template-columns: 1fr; gap: 0.75rem; }
+  /* tile chrome (border + bg + meta) defaults to light-theme palette so
+   * the screen-share blends with a white page. Dark-theme overrides
+   * further down restore the black tile chrome for the night palette. */
   .screen-tile {
-    border: 1px solid #000; background: #000; padding: 0;
+    border: 1px solid #ddd; background: #fff; padding: 0;
     display: grid; grid-auto-rows: max-content; position: relative;
   }
   .screen-tile video {
-    width: 100%; height: auto; max-height: 92vh; display: block; background: #000;
+    width: 100%; height: auto; max-height: 92vh; display: block; background: #fff;
   }
   .screen-tile .screen-meta {
-    background: #111; color: #ddd; font-size: 0.7rem; padding: 0.3rem 0.5rem;
+    background: #f0f0f0; color: #333; font-size: 0.7rem; padding: 0.3rem 0.5rem;
     display: grid; grid-template-columns: 1fr auto; gap: 0.5rem; align-items: center;
   }
   /* Firefox Android rejects MediaStream <video> autoplay even when muted.
@@ -235,15 +245,15 @@
    * vertically. Each tile keeps a 16:9 letterbox so faces don't squash. */
   #cameras { display: grid; grid-template-columns: 1fr; gap: 0.45rem; }
   .camera-tile {
-    border: 1px solid #000; background: #000; padding: 0;
+    border: 1px solid #ddd; background: #fff; padding: 0;
     display: grid; grid-auto-rows: max-content; position: relative;
   }
   .camera-tile video {
-    width: 100%; height: auto; display: block; background: #000;
+    width: 100%; height: auto; display: block; background: #fff;
     aspect-ratio: 16 / 9; object-fit: cover;
   }
   .camera-tile .screen-meta {
-    background: #111; color: #ddd; font-size: 0.7rem; padding: 0.2rem 0.4rem;
+    background: #f0f0f0; color: #333; font-size: 0.7rem; padding: 0.2rem 0.4rem;
     display: grid; grid-template-columns: 1fr auto; gap: 0.4rem; align-items: center;
   }
   /* tap-to-play overlay applies to camera tiles too */
@@ -2326,8 +2336,8 @@ logLine('', 'ready — pick a handle, type a rendezvous code, enter the space');
 
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