sidebar toggle + css

webui/style.css

@@ -47,7 +47,8 @@ button {
 }
 
 .app-shell {
-  min-height: 100vh;
+  height: 100vh;
+  overflow: hidden;
   display: grid;
   grid-template-columns: 300px minmax(0, 1fr);
 }
@@ -59,6 +60,7 @@ button {
 }
 
 .content {
+  overflow-y: auto;
   padding: 28px;
   max-width: 1320px;
   width: 100%;
@@ -494,6 +496,10 @@ tbody tr:hover {
   overflow-y: auto;
 }
 
+.sidebar-toggle {
+  display: none;
+}
+
 .viewer-sidebar-head {
   display: flex;
   align-items: flex-start;
@@ -814,6 +820,10 @@ tbody tr:hover {
     grid-template-columns: 1fr;
   }
 
+  .app-shell {
+    grid-template-rows: auto 1fr;
+  }
+
   .sidebar,
   .viewer-sidebar {
     border-right: 0;
@@ -825,14 +835,114 @@ tbody tr:hover {
   }
 }
 
-@media (max-width: 720px) {
-  .content,
-  .viewer-main,
-  .sidebar,
+/* ---------- Mobile: tablet & phone ---------- */
+
+@media (max-width: 768px) {
+  .sidebar-toggle {
+    display: inline-flex;
+  }
+
   .viewer-sidebar {
+    position: fixed;
+    left: -300px;
+    top: 0;
+    bottom: 0;
+    width: 280px;
+    z-index: 100;
+    transition: left 0.2s ease;
+    border-right: 1px dashed var(--line);
+    border-bottom: 0;
+  }
+
+  .viewer-sidebar.open {
+    left: 0;
+  }
+
+  .viewer-sidebar.open::before {
+    content: "";
+    position: fixed;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.5);
+    z-index: -1;
+  }
+
+  .viewer-header {
+    padding: 12px 14px;
+  }
+
+  .messages-list {
+    padding: 8px 12px 16px;
+  }
+
+  .chat-bubble {
+    max-width: 92%;
+  }
+
+  .chat-bubble::before {
+    display: none;
+  }
+
+  .content {
     padding: 18px;
   }
 
+  .viewer-sidebar-head h1 {
+    font-size: 1.2rem;
+  }
+}
+
+@media (max-width: 480px) {
+  .content {
+    padding: 12px;
+  }
+
+  .viewer-main {
+    padding: 0;
+  }
+
+  .viewer-header {
+    padding: 10px 10px;
+  }
+
+  .viewer-header h2 {
+    font-size: 1.1rem;
+  }
+
+  .messages-list {
+    padding: 6px 8px 12px;
+  }
+
+  .chat-bubble {
+    max-width: 96%;
+    padding: 6px 9px;
+    font-size: 0.92rem;
+  }
+
+  .chat-footer {
+    font-size: 0.65rem;
+  }
+
+  .chat-sender {
+    font-size: 0.75rem;
+  }
+
+  .chat-reply-author {
+    font-size: 0.72rem;
+  }
+
+  .chat-reply-text {
+    font-size: 0.75rem;
+  }
+
+  .sidebar {
+    padding: 16px;
+  }
+
+  .viewer-sidebar {
+    width: 260px;
+    padding: 16px;
+  }
+
   .panel-header,
   .viewer-header,
   .dialog-header {