From 67648f06f948f70da24c71f1535f8e5e457de5cb Mon Sep 17 00:00:00 2001
From: "russell@unturf.com" <russell@unturf.com>
Date: Sat, 24 Jan 2026 08:04:37 -0500
Subject: [PATCH] Persist preview visibility state in localStorage

---
 remarkbox/static/js/custom.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/remarkbox/static/js/custom.js b/remarkbox/static/js/custom.js
index cf83576..92c5df1 100644
--- a/remarkbox/static/js/custom.js
+++ b/remarkbox/static/js/custom.js
@@ -90,7 +90,7 @@ function toggle(target, button, off_text, on_text) {
     }
 }
 
-// Animate <details> close for preview-details elements.
+// Animate <details> close for preview-details elements and persist state in localStorage.
 if (typeof document.addEventListener === 'function') {
     document.addEventListener('click', function(e) {
         var summary = e.target.closest('.preview-toggle');
@@ -100,10 +100,13 @@ if (typeof document.addEventListener === 'function') {
         if (details.open && !details.classList.contains('closing')) {
             e.preventDefault();
             details.classList.add('closing');
+            localStorage.setItem('remarkbox-preview-hidden', 'true');
             setTimeout(function() {
                 details.open = false;
                 details.classList.remove('closing');
             }, 800);
+        } else if (!details.open) {
+            localStorage.removeItem('remarkbox-preview-hidden');
         }
     }, true);
 }
@@ -118,6 +121,13 @@ function autoGrow(el) {
 // Initialize on DOM ready
 document.addEventListener('DOMContentLoaded', function() {
 
+    // Restore preview state from localStorage
+    if (localStorage.getItem('remarkbox-preview-hidden') === 'true') {
+        document.querySelectorAll('.preview-details').forEach(function(details) {
+            details.open = false;
+        });
+    }
+
     // Auto-grow textareas on input
     document.querySelectorAll('.common-textarea').forEach(function(textarea) {
         textarea.addEventListener('input', function() {