diff --git a/public/styles.css b/public/styles.css
index 867892d..f330864 100755
--- a/public/styles.css
+++ b/public/styles.css
@@ -1,33 +1,61 @@
-:root { --bg: #0b0c10; --fg: #f3f3f3; --accent: #d0aa5b; --muted: #8d8f95; --line: #2a2d34; }
-body { margin: 0; background: var(--bg); color: var(--fg); font-family: system-ui, sans-serif; }
-.topbar { position: fixed; top: 0; left: 0; right: 0; height: 48px; display: flex; align-items: center; gap: 1em; background: #111; padding: 0 1em; z-index: 100; box-shadow: 0 2px 8px rgba(0,0,0,.3); }
-.topbar a { color: var(--accent); text-decoration: none; }
-.topbar button { font-size: 24px; background: transparent; color: var(--accent); border: none; padding: 4px 8px; cursor: pointer; transition: color 0.2s; }
-.topbar button:hover { color: var(--fg); }
-.sidebar { position: fixed; top: 48px; bottom: 0; width: 85%; max-width: 320px; overflow: auto; background: #111; transition: transform .3s ease; transform: translateX(-100%); padding: 10px; }
+/* --- Sidebar and Overlay fix --- */
+.sidebar {
+  position: fixed;
+  top: 48px;
+  bottom: 0;
+  left: 0;
+  width: 85%;
+  max-width: 320px;
+  overflow-y: auto;
+  background: #111;
+  transform: translateX(-100%);
+  transition: transform .3s ease;
+  padding: 10px;
+  z-index: 200;          /* ABOVE overlay */
+  will-change: transform;
+}
 .sidebar.open { transform: translateX(0); }
-.overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); z-index: 99; transition: opacity 0.3s; opacity: 0; }
-.sidebar.open ~ .overlay { display: block; opacity: 1; }
-.content { margin-top: 48px; padding: 16px; }
-@media (min-width: 900px) { .sidebar { transform: none; position: static; width: 280px; height: calc(100vh - 48px); } .content { margin-left: 280px; } .overlay { display: none !important; } }
-@media (max-width: 900px) { .viewer { padding: 12px; font-size: 1.05em; line-height: 1.6; } #htmlView, #mdView { min-height: calc(100vh - 60px); } }
-.viewer { height: calc(100vh - 80px); overflow: auto; max-width: 820px; margin: 0 auto; }
-#htmlView { width: 100%; height: 100%; border: none; background: #0b0c10; }
-#mdView h1, #mdView h2, #mdView h3 { color: var(--accent); }
-#mdView pre, #mdView code { overflow-x: auto; word-break: break-word; background: #111; padding: 0.5em; border-radius: 4px; color: var(--accent); }
-.meta { color: var(--muted); margin-bottom: 12px; }
-button#prev, button#next { background: transparent; border: 1px solid var(--line); color: var(--fg); border-radius: 8px; padding: 4px 10px; }
-button#prev:hover, button#next:hover { border-color: var(--accent); color: var(--accent); }
-.controls { display: flex; gap: 0.5em; margin-bottom: 8px; }
-select { background: #0b0c10; color: var(--fg); border: 1px solid var(--line); border-radius: 4px; padding: 4px; }
-#search { flex: 1; background: #0b0c10; color: var(--fg); border: 1px solid var(--line); border-radius: 4px; padding: 6px; }
-.dir .label { display: flex; align-items: center; cursor: pointer; padding: 4px 6px; color: var(--accent); font-weight: 600; }
-.dir .label::before { content: "▶"; margin-right: 6px; font-size: 0.8em; color: var(--muted); }
-.dir.open .label::before { content: "▼"; }
-.children { display: none; margin-left: 1em; border-left: 1px dashed var(--line); padding-left: 10px; }
-.dir.open > .children { display: block; }
-.file { display: block; padding: 4px 12px; color: var(--fg); text-decoration: none; border-radius: 4px; }
-.file:hover { background: rgba(208,170,91,.1); }
-.file.active { background: rgba(208,170,91,.2); outline: 1px solid var(--line); }
-.pin { color: var(--accent); margin-right: 4px; }
-.meta { color: var(--muted); font-size: 0.85em; margin-left: 6px; }
\ No newline at end of file
+
+.overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0,0,0,.45);
+  backdrop-filter: blur(4px);
+  -webkit-backdrop-filter: blur(4px);
+  z-index: 150;           /* BELOW sidebar */
+  opacity: 0;
+  pointer-events: none;
+  transition: opacity .3s;
+}
+.sidebar.open ~ .overlay {
+  opacity: 1;
+  pointer-events: all;
+}
+
+.content {
+  margin-top: 48px;
+  padding: 16px;
+  transition: margin-left .3s ease;
+}
+
+/* Desktop layout */
+@media (min-width: 900px) {
+  .sidebar {
+    transform: none !important;
+    position: static;
+    width: 280px;
+    height: calc(100vh - 48px);
+    z-index: auto;
+  }
+  .content {
+    margin-left: 280px;
+  }
+  .overlay { display: none !important; }
+}
+
+/* Mobile layout */
+@media (max-width: 899px) {
+  .content {
+    margin-left: 0 !important;
+  }
+}
\ No newline at end of file