Color bars on roll entries, auto-crit damage on nat 20, pulsing crit indicator on damage button

client/src/components/AttackBlock.tsx

@@ -9,6 +9,7 @@ interface AttackBlockProps {
   characterName?: string;
   characterColor?: string;
   mode?: "view" | "edit";
+  isCrit?: boolean;
 }
 
 export default function AttackBlock({
@@ -18,6 +19,7 @@ export default function AttackBlock({
   characterName,
   characterColor,
   mode,
+  isCrit,
 }: AttackBlockProps) {
   const weapons = attacks.filter((a) => !a.isTalent);
   const talents = attacks.filter((a) => a.isTalent);
@@ -63,8 +65,13 @@ export default function AttackBlock({
                   type="attack"
                   dice={atk.damage}
                   label={`${atk.name} damage`}
-                  icon="💥"
-                  title={`Damage: ${atk.damage} (Shift: crit = double dice)`}
+                  icon={isCrit ? "💥" : "💥"}
+                  title={
+                    isCrit
+                      ? `CRIT damage: double ${atk.damage}`
+                      : `Damage: ${atk.damage} (Shift: crit = double dice)`
+                  }
+                  forceCrit={isCrit}
                 />
               </span>
             ) : (

client/src/components/CharacterDetail.tsx

@@ -6,6 +6,7 @@ import styles from "./CharacterDetail.module.css";
 interface CharacterDetailProps {
   character: Character;
   campaignId: number;
+  isCrit?: boolean;
   onUpdate: (id: number, data: Partial<Character>) => void;
   onStatChange: (characterId: number, statName: string, value: number) => void;
   onAddGearFromItem: (characterId: number, item: GameItem) => void;
@@ -31,6 +32,7 @@ interface CharacterDetailProps {
 export default function CharacterDetail({
   character,
   campaignId,
+  isCrit,
   onUpdate,
   onStatChange,
   onAddGearFromItem,
@@ -62,6 +64,7 @@ export default function CharacterDetail({
           character={character}
           mode={mode}
           campaignId={campaignId}
+          isCrit={isCrit}
           onUpdate={onUpdate}
           onStatChange={onStatChange}
           onAddGearFromItem={onAddGearFromItem}

client/src/components/CharacterSheet.tsx

@@ -12,6 +12,7 @@ interface CharacterSheetProps {
   character: Character;
   mode: "view" | "edit";
   campaignId: number;
+  isCrit?: boolean;
   onUpdate: (id: number, data: Partial<Character>) => void;
   onStatChange: (characterId: number, statName: string, value: number) => void;
   onAddGearFromItem: (characterId: number, item: GameItem) => void;
@@ -37,6 +38,7 @@ export default function CharacterSheet({
   character,
   mode,
   campaignId,
+  isCrit,
   onUpdate,
   onStatChange,
   onAddGearFromItem,
@@ -163,6 +165,7 @@ export default function CharacterSheet({
           character={character}
           mode={mode}
           campaignId={campaignId}
+          isCrit={isCrit}
           onStatChange={onStatChange}
         />
         <InfoPanel

client/src/components/DiceButton.module.css

@@ -25,3 +25,19 @@
 .btn:active {
   background: rgba(201, 168, 76, 0.25);
 }
+
+.btn.crit {
+  border-color: #ffd700;
+  color: #ffd700;
+  animation: critPulse 1s ease-in-out infinite;
+}
+
+@keyframes critPulse {
+  0%,
+  100% {
+    box-shadow: 0 0 4px rgba(255, 215, 0, 0.3);
+  }
+  50% {
+    box-shadow: 0 0 8px rgba(255, 215, 0, 0.6);
+  }
+}

client/src/components/DiceButton.tsx

@@ -11,6 +11,7 @@ interface DiceButtonProps {
   label: string;
   icon?: string;
   title?: string;
+  forceCrit?: boolean;
 }
 
 export default function DiceButton({
@@ -23,6 +24,7 @@ export default function DiceButton({
   label,
   icon = "🎲",
   title: titleProp,
+  forceCrit,
 }: DiceButtonProps) {
   function handleClick(e: React.MouseEvent) {
     const advantage = e.shiftKey;
@@ -33,9 +35,9 @@ export default function DiceButton({
     let sendAdvantage = advantage && !disadvantage;
     let sendDisadvantage = disadvantage && !advantage;
 
-    // For damage rolls (non-d20), shift = crit (double dice) instead of advantage
+    // For damage rolls (non-d20), shift or forceCrit = crit (double dice)
     const isD20 = dice.toLowerCase().includes("d20");
-    if (!isD20 && advantage) {
+    if (!isD20 && (advantage || forceCrit)) {
       const match = dice.match(/^(\d*)d(\d+)(.*)/i);
       if (match) {
         const count = match[1] ? parseInt(match[1], 10) : 1;
@@ -60,7 +62,7 @@ export default function DiceButton({
 
   return (
     <button
-      className={styles.btn}
+      className={`${styles.btn} ${forceCrit ? styles.crit : ""}`}
       onClick={handleClick}
       title={titleProp || `Roll ${dice} (Shift: advantage, Ctrl: disadvantage)`}
     >

client/src/components/RollEntry.module.css

@@ -4,6 +4,8 @@
   border-radius: 6px;
   padding: 0.5rem 0.6rem;
   animation: slideIn 0.3s ease-out;
+  border-left-width: 3px;
+  border-left-style: solid;
 }
 
 @keyframes slideIn {

client/src/components/RollEntry.tsx

@@ -33,6 +33,7 @@ export default function RollEntry({ roll, fresh }: RollEntryProps) {
   return (
     <div
       className={`${styles.card} ${fresh ? styles.fresh : ""} ${isNat20 ? styles.nat20 : ""}`}
+      style={{ borderLeftColor: roll.character_color || "#2a2a4a" }}
     >
       <div className={styles.topLine}>
         <span

client/src/components/StatsPanel.tsx

@@ -8,6 +8,7 @@ interface StatsPanelProps {
   character: Character;
   mode: "view" | "edit";
   campaignId: number;
+  isCrit?: boolean;
   onStatChange: (characterId: number, statName: string, value: number) => void;
 }
 
@@ -15,6 +16,7 @@ export default function StatsPanel({
   character,
   mode,
   campaignId,
+  isCrit,
   onStatChange,
 }: StatsPanelProps) {
   const attacks = generateAttacks(character);
@@ -41,6 +43,7 @@ export default function StatsPanel({
         characterName={character.name}
         characterColor={character.color}
         mode={mode}
+        isCrit={isCrit}
       />
     </div>
   );

client/src/pages/CampaignView.tsx

@@ -36,6 +36,7 @@ export default function CampaignView() {
   });
   const [rolls, setRolls] = useState<RollResult[]>([]);
   const [freshIds, setFreshIds] = useState<Set<number>>(new Set());
+  const [critCharIds, setCritCharIds] = useState<Set<number>>(new Set());
 
   // Fetch characters and join socket room
   useEffect(() => {
@@ -170,6 +171,19 @@ export default function CampaignView() {
           return next;
         });
       }, 2000);
+
+      // Track crits: if this is a nat20 attack, mark character for crit damage
+      if (roll.nat20 && roll.character_id && roll.label.includes("attack")) {
+        setCritCharIds((prev) => new Set(prev).add(roll.character_id!));
+      }
+      // If this is a damage roll, clear the crit flag for that character
+      if (roll.character_id && roll.label.includes("damage")) {
+        setCritCharIds((prev) => {
+          const next = new Set(prev);
+          next.delete(roll.character_id!);
+          return next;
+        });
+      }
     }
 
     socket.on("character:created", onCharacterCreated);
@@ -302,6 +316,7 @@ export default function CampaignView() {
           <CharacterDetail
             character={selectedCharacter}
             campaignId={campaignId}
+            isCrit={critCharIds.has(selectedCharacter.id)}
             onUpdate={handleUpdate}
             onStatChange={handleStatChange}
             onAddGearFromItem={handleAddGearFromItem}