diff --git a/static/js/10-reactions.js b/static/js/10-reactions.js
index b41cb59..534da41 100644
--- a/static/js/10-reactions.js
+++ b/static/js/10-reactions.js
@@ -5,8 +5,13 @@ window.Glow = window.Glow || {};
 
 Glow.reactions = Glow.reactions || {
   enabled: true,
-  emojis: ["👍", "❤️", "🔥", "😂", "🎉", "👏", "😮", "😢", "👀", "✅", "🚀", "💡"],
-  activeMessage: null
+  emojis: [
+    "👍", "👎", "❤️", "🔥", "😂", "😄", "🙂", "😭",
+    "👏", "🙌", "🎉", "✨", "💯", "✅", "👀", "🤔",
+    "🙏", "💡", "⭐", "🚀", "😮", "😢", "😡", "👋"
+  ],
+  activeMessage: null,
+  selectedIndex: 0
 };
 
 Glow.submitCustomReaction = async () => {
@@ -41,8 +46,47 @@ Glow.submitCustomReaction = async () => {
   }
 };
 
+Glow.highlightReactionSelection = () => {
+  const grid = Glow.els.reactionPopupGrid;
+  if (!grid) return;
+
+  const buttons = [...grid.querySelectorAll(".reaction-popup-button")];
+  buttons.forEach((button, index) => {
+    button.classList.toggle("active", index === Glow.reactions.selectedIndex);
+  });
+};
+
+Glow.activateReactionAtIndex = async index => {
+  const message = Glow.reactions.activeMessage;
+  const emoji = Glow.reactions.emojis[index];
+  if (!message || !emoji) return;
+
+  try {
+    const existing = (message.reactions || []).find(item => item.emoji === emoji);
+
+    if (existing?.reacted) {
+      await Glow.apiRemoveReaction(message.id, emoji);
+    } else {
+      await Glow.apiAddReaction(message.id, emoji);
+    }
+
+    const data = await Glow.apiGetMessageReactions(message.id);
+    message.reactions = data.reactions || [];
+    Glow.updateMessageReactionsDom?.(message.id, message.reactions);
+    Glow.renderReactionPopupUsers(message.reactions);
+    Glow.highlightReactionSelection();
+
+    if (Glow.state.activeView === "feed") {
+      Glow.loadFeed?.();
+    }
+  } catch (error) {
+    Glow.showToast(error.message || "Could not update reaction.", "error");
+  }
+};
+
 Glow.openReactionPopup = async message => {
   Glow.reactions.activeMessage = message;
+  Glow.reactions.selectedIndex = 0;
 
   const grid = Glow.els.reactionPopupGrid;
   const list = Glow.els.reactionPopupList;
@@ -53,38 +97,21 @@ Glow.openReactionPopup = async message => {
   grid.replaceChildren();
   list.replaceChildren();
 
-  for (const emoji of Glow.reactions.emojis) {
+  Glow.reactions.emojis.forEach((emoji, index) => {
     const button = document.createElement("button");
     button.className = "reaction-popup-button";
     button.type = "button";
     button.textContent = emoji;
+    button.setAttribute("aria-label", `React with ${emoji}`);
 
     button.addEventListener("click", async () => {
-      try {
-        const existing = (message.reactions || []).find(item => item.emoji === emoji);
-
-        if (existing?.reacted) {
-          await Glow.apiRemoveReaction(message.id, emoji);
-        } else {
-          await Glow.apiAddReaction(message.id, emoji);
-        }
-
-        const data = await Glow.apiGetMessageReactions(message.id);
-        message.reactions = data.reactions || [];
-        Glow.updateMessageReactionsDom?.(message.id, message.reactions);
-
-        Glow.renderReactionPopupUsers(message.reactions);
-
-        if (Glow.state.activeView === "feed") {
-          Glow.loadFeed?.();
-        }
-      } catch (error) {
-        Glow.showToast(error.message || "Could not update reaction.", "error");
-      }
+      Glow.reactions.selectedIndex = index;
+      Glow.highlightReactionSelection();
+      await Glow.activateReactionAtIndex(index);
     });
 
     grid.append(button);
-  }
+  });
 
   try {
     const data = await Glow.apiGetMessageReactions(message.id);
@@ -99,12 +126,26 @@ Glow.openReactionPopup = async message => {
 
   Glow.renderReactionPopupUsers(message.reactions || []);
   Glow.els.reactionPopupOverlay?.classList.remove("hidden");
+  Glow.highlightReactionSelection();
 
   setTimeout(() => {
-    Glow.els.reactionCustomInput?.focus();
+    const first = grid.querySelector(".reaction-popup-button");
+    first?.focus();
   }, 0);
 };
 
+Glow.moveReactionSelection = delta => {
+  const total = Glow.reactions.emojis.length;
+  if (!total) return;
+  Glow.reactions.selectedIndex =
+    (Glow.reactions.selectedIndex + delta + total) % total;
+  Glow.highlightReactionSelection();
+
+  const grid = Glow.els.reactionPopupGrid;
+  const selected = grid?.querySelectorAll(".reaction-popup-button")[Glow.reactions.selectedIndex];
+  selected?.scrollIntoView({ block: "nearest", inline: "nearest" });
+};
+
 Glow.renderReactionPopupUsers = reactions => {
   const list = Glow.els.reactionPopupList;
   if (!list) return;
@@ -128,19 +169,12 @@ Glow.renderReactionPopupUsers = reactions => {
     title.innerHTML = `<strong>${reaction.emoji} ${reaction.count}</strong>`;
     section.append(title);
 
-    for (const user of reaction.users || []) {
-      const row = document.createElement("div");
-      row.className = "reaction-popup-user";
-
-      const left = document.createElement("span");
-      left.textContent = user.username;
-
-      const right = document.createElement("span");
-      right.textContent = new Date(user.created_at).toLocaleString();
-
-      row.append(left, right);
-      section.append(row);
-    }
+    const names = document.createElement("div");
+    names.className = "reaction-popup-user";
+    names.textContent = (reaction.users || [])
+      .map(user => user.username)
+      .join(", ");
+    section.append(names);
 
     list.append(section);
   }
@@ -148,6 +182,7 @@ Glow.renderReactionPopupUsers = reactions => {
 
 Glow.closeReactionPopup = () => {
   Glow.reactions.activeMessage = null;
+  Glow.reactions.selectedIndex = 0;
   if (Glow.els.reactionCustomInput) {
     Glow.els.reactionCustomInput.value = "";
   }
@@ -163,4 +198,49 @@ Glow.els.reactionCustomInput?.addEventListener("keydown", event => {
     event.preventDefault();
     Glow.submitCustomReaction?.();
   }
+  if (event.key === "Escape") {
+    event.preventDefault();
+    Glow.closeReactionPopup?.();
+  }
 });
+
+document.addEventListener("keydown", async event => {
+  if (Glow.els.reactionPopupOverlay?.classList.contains("hidden")) return;
+
+  if (event.key === "ArrowRight") {
+    event.preventDefault();
+    Glow.moveReactionSelection(1);
+    return;
+  }
+
+  if (event.key === "ArrowLeft") {
+    event.preventDefault();
+    Glow.moveReactionSelection(-1);
+    return;
+  }
+
+  if (event.key === "ArrowDown") {
+    event.preventDefault();
+    Glow.moveReactionSelection(4);
+    return;
+  }
+
+  if (event.key === "ArrowUp") {
+    event.preventDefault();
+    Glow.moveReactionSelection(-4);
+    return;
+  }
+
+  if (event.key === "Enter") {
+    const active = document.activeElement;
+    if (active === Glow.els.reactionCustomInput) return;
+    event.preventDefault();
+    await Glow.activateReactionAtIndex(Glow.reactions.selectedIndex);
+    return;
+  }
+
+  if (event.key === "Escape") {
+    event.preventDefault();
+    Glow.closeReactionPopup?.();
+  }
+});
\ No newline at end of file