diff --git a/resources/js/packages/ui/src/FullCalendar/CalendarDayColumn.vue b/resources/js/packages/ui/src/FullCalendar/CalendarDayColumn.vue
index 27491ea2..7c78c00f 100644
--- a/resources/js/packages/ui/src/FullCalendar/CalendarDayColumn.vue
+++ b/resources/js/packages/ui/src/FullCalendar/CalendarDayColumn.vue
@@ -4,7 +4,7 @@ import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '..';
 import type { DayEvent, ActivityBox } from './calendarTypes';
 import type { WindowActivityInPeriod } from './activityTypes';
 
-defineProps<{
+const props = defineProps<{
     dayStr: string;
     totalGridHeight: number;
     hasActivityStatus: boolean;
@@ -34,6 +34,8 @@ defineProps<{
     getActivityBoxActivities: (box: ActivityBox) => WindowActivityInPeriod[];
     getActivityPercentage: (count: number, total: number) => string;
     getActivityText: (activity: WindowActivityInPeriod) => string;
+    getTopActivity: (box: ActivityBox) => WindowActivityInPeriod | null;
+    isDayView: boolean;
 
     // Selection
     showSelection: boolean;
@@ -46,6 +48,16 @@ defineProps<{
     selectionEndHeight: number;
 }>();
 
+function isUncoveredByEvents(abox: ActivityBox): boolean {
+    return !props.dayEvents.some((de) => {
+        const eTop = de.top;
+        const eBottom = de.top + de.height;
+        const aTop = abox.top;
+        const aBottom = abox.top + abox.height;
+        return eTop < aBottom && eBottom > aTop;
+    });
+}
+
 const emit = defineEmits<{
     (e: 'event-pointerdown', event: PointerEvent, dayEvent: DayEvent): void;
     (e: 'event-keydown-enter', dayEvent: DayEvent): void;
@@ -55,6 +67,7 @@ const emit = defineEmits<{
         dayEvent: DayEvent,
         edge: 'start' | 'end'
     ): void;
+    (e: 'activity-pointerdown', event: PointerEvent): void;
 }>();
 </script>
 
@@ -63,12 +76,16 @@ const emit = defineEmits<{
         class="fc-timegrid-col relative border-r border-border bg-transparent pointer-events-none"
         :class="{
             'has-activity-status': hasActivityStatus,
+            'activity-expanded': hasActivityStatus && isDayView,
         }"
         :data-date="dayStr"
         :style="{ height: totalGridHeight + 'px' }">
         <div
             class="absolute inset-y-0 left-0.5 right-0.5"
-            :class="{ 'fc-events-inset': hasActivityStatus }">
+            :class="{
+                'fc-events-inset': hasActivityStatus && !isDayView,
+                'fc-events-inset-expanded': hasActivityStatus && isDayView,
+            }">
             <div
                 v-for="dayEvent in dayEvents"
                 :key="dayEvent.event.id"
@@ -120,15 +137,47 @@ const emit = defineEmits<{
             class="fc-timegrid-now-indicator-line absolute left-0 right-0 border-t-2 border-red-500 z-50 pointer-events-none"
             :style="{ top: nowIndicatorTop + 'px' }"></div>
 
-        <TooltipProvider :delay-duration="0">
+        <TooltipProvider :disable-hoverable-content="true" :delay-duration="0">
             <Tooltip v-for="(abox, ai) in activityBoxes" :key="'activity-' + ai">
                 <TooltipTrigger as-child>
                     <div
                         class="activity-status-box"
-                        :class="abox.isIdle ? 'idle' : 'active'"
-                        :style="{ top: abox.top + 'px', height: abox.height + 'px' }"></div>
+                        :class="[
+                            abox.isIdle ? 'idle' : 'active',
+                            {
+                                'activity-status-box-expanded': isDayView,
+                                'activity-status-box-uncovered':
+                                    !isDayView &&
+                                    !abox.isIdle &&
+                                    getTopActivity(abox) &&
+                                    isUncoveredByEvents(abox),
+                            },
+                        ]"
+                        :style="{ top: abox.top + 'px', height: abox.height + 'px' }"
+                        @pointerdown="emit('activity-pointerdown', $event)">
+                        <div
+                            v-if="
+                                !abox.isIdle &&
+                                getTopActivity(abox) &&
+                                abox.height >= 16 &&
+                                (isDayView || isUncoveredByEvents(abox))
+                            "
+                            class="activity-status-content">
+                            <img
+                                v-if="getTopActivity(abox)?.icon"
+                                :src="getTopActivity(abox)!.icon!"
+                                :alt="getTopActivity(abox)!.appName"
+                                class="activity-status-icon" />
+                            <div v-else class="activity-status-icon-fallback">
+                                {{ getTopActivity(abox)!.appName.charAt(0).toUpperCase() }}
+                            </div>
+                            <span class="activity-status-label">
+                                {{ getTopActivity(abox)!.label || getTopActivity(abox)!.appName }}
+                            </span>
+                        </div>
+                    </div>
                 </TooltipTrigger>
-                <TooltipContent side="left" :side-offset="8">
+                <TooltipContent :side="isDayView ? 'right' : 'left'" :side-offset="8">
                     <template v-if="getActivityBoxActivities(abox).length === 0">
                         {{ getActivityBoxLabel(abox) }}
                     </template>
@@ -269,13 +318,99 @@ const emit = defineEmits<{
     background-color: rgba(156, 163, 175, 0.5);
 }
 .activity-status-box.active::before {
-    background-color: rgba(34, 197, 94, 0.3);
+    background-color: rgba(14, 165, 233, 0.3);
 }
 .activity-status-box.active:hover::before {
-    background-color: rgba(34, 197, 94, 1);
+    background-color: rgba(14, 165, 233, 1);
+}
+
+/* Uncovered activity boxes in week view — fill column width */
+.activity-status-box-uncovered {
+    width: calc(100% - 4px);
+    border-radius: 3px;
+    overflow: hidden;
+}
+.activity-status-box-uncovered::before {
+    left: 0;
+    right: 0;
+    width: auto;
+}
+.activity-status-box-uncovered.active::before {
+    background-color: rgba(14, 165, 233, 0.12);
+}
+.activity-status-box-uncovered.active:hover::before {
+    background-color: rgba(14, 165, 233, 0.25);
+}
+
+/* Expanded activity boxes for day view */
+.activity-status-box-expanded {
+    width: 200px;
+    border-radius: 3px;
+    overflow: hidden;
+}
+.activity-status-box-expanded::before {
+    left: 0;
+    right: 0;
+    width: auto;
+}
+.activity-status-box-expanded.idle::before {
+    background-color: rgba(156, 163, 175, 0.08);
+}
+.activity-status-box-expanded.idle:hover::before {
+    background-color: rgba(156, 163, 175, 0.2);
+}
+.activity-status-box-expanded.active::before {
+    background-color: rgba(14, 165, 233, 0.12);
+}
+.activity-status-box-expanded.active:hover::before {
+    background-color: rgba(14, 165, 233, 0.25);
+}
+
+.activity-status-content {
+    position: relative;
+    z-index: 1;
+    display: flex;
+    align-items: center;
+    gap: 4px;
+    padding: 2px 4px;
+    height: 100%;
+    overflow: hidden;
+}
+
+.activity-status-icon {
+    width: 14px;
+    height: 14px;
+    border-radius: 2px;
+    flex-shrink: 0;
+}
+
+.activity-status-icon-fallback {
+    width: 14px;
+    height: 14px;
+    border-radius: 2px;
+    background-color: rgba(14, 165, 233, 0.2);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 8px;
+    flex-shrink: 0;
+    color: rgba(14, 165, 233, 0.8);
+}
+
+.activity-status-label {
+    font-size: 10px;
+    line-height: 1.2;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    opacity: 0.8;
 }
 
 .fc-events-inset {
     left: 8px;
 }
+
+.fc-events-inset-expanded {
+    left: 204px;
+}
 </style>
diff --git a/resources/js/packages/ui/src/FullCalendar/TimeEntryCalendar.vue b/resources/js/packages/ui/src/FullCalendar/TimeEntryCalendar.vue
index ef8256ea..d470bd1e 100644
--- a/resources/js/packages/ui/src/FullCalendar/TimeEntryCalendar.vue
+++ b/resources/js/packages/ui/src/FullCalendar/TimeEntryCalendar.vue
@@ -163,6 +163,7 @@ const {
     getActivityBoxActivities,
     getActivityPercentage,
     getActivityText,
+    getTopActivity,
 } = useActivityBoxes({
     activityPeriods: () => props.activityPeriods,
     viewDays,
@@ -280,6 +281,22 @@ watch(showEditTimeEntryModal, (value) => {
     }
 });
 
+/**
+ * Guards slot pointer-down so that clicks which dismiss an open Reka UI
+ * layer (context menu, popover, dialog) don't simultaneously start a
+ * new time-entry selection on the calendar grid.
+ *
+ * Because Reka's DismissableLayer registers its document-level
+ * `pointerdown` listener *without* capture, it fires AFTER the
+ * calendar grid's own handler. That means when this guard runs,
+ * `contextMenuOpen` (and modal refs) still reflect the *open* state.
+ */
+function guardedSlotPointerDown(e: PointerEvent) {
+    if (contextMenuOpen.value) return;
+    if (showCreateTimeEntryModal.value || showEditTimeEntryModal.value) return;
+    onSlotPointerDown(e);
+}
+
 const scrollToCurrentTime = () => {
     nextTick(() => {
         if (!scrollerRef.value) return;
@@ -490,7 +507,7 @@ function getEventDurationSeconds(dayEvent: DayEvent, dayStr: string): number {
                                 <div
                                     v-for="day in viewDays"
                                     :key="day.format('YYYY-MM-DD')"
-                                    class="fc-col-header-cell border-r border-b border-border px-2 py-3 bg-default-background text-center"
+                                    class="fc-col-header-cell border-r border-border px-2 py-3 bg-default-background text-center"
                                     :class="{
                                         'bg-secondary': isToday(day),
                                         'fc-day-today': isToday(day),
@@ -534,7 +551,7 @@ function getEventDurationSeconds(dayEvent: DayEvent, dayStr: string): number {
 
                                 <div
                                     class="flex-1 min-w-0 relative"
-                                    @pointerdown="onSlotPointerDown($event)">
+                                    @pointerdown="guardedSlotPointerDown($event)">
                                     <div
                                         class="bg-background relative"
                                         :style="{ height: totalGridHeight + 'px' }">
@@ -611,6 +628,8 @@ function getEventDurationSeconds(dayEvent: DayEvent, dayStr: string): number {
                                             :get-activity-box-activities="getActivityBoxActivities"
                                             :get-activity-percentage="getActivityPercentage"
                                             :get-activity-text="getActivityText"
+                                            :get-top-activity="getTopActivity"
+                                            :is-day-view="activeView === 'timeGridDay'"
                                             :show-selection="
                                                 isSelecting || showCreateTimeEntryModal
                                             "
@@ -629,6 +648,7 @@ function getEventDurationSeconds(dayEvent: DayEvent, dayStr: string): number {
                                             :selection-height="selectionHeight"
                                             :selection-end-top="selectionEndTop"
                                             :selection-end-height="selectionEndHeight"
+                                            @activity-pointerdown="guardedSlotPointerDown"
                                             @event-pointerdown="
                                                 (e, dayEvent) =>
                                                     onEventPointerDown(e, dayEvent.event, dayEvent)
diff --git a/resources/js/packages/ui/src/FullCalendar/useActivityBoxes.ts b/resources/js/packages/ui/src/FullCalendar/useActivityBoxes.ts
index 27db9d66..13af9d79 100644
--- a/resources/js/packages/ui/src/FullCalendar/useActivityBoxes.ts
+++ b/resources/js/packages/ui/src/FullCalendar/useActivityBoxes.ts
@@ -21,10 +21,10 @@ export function useActivityBoxes(params: {
     function getActivityBoxLabel(box: ActivityBox): string {
         const periodStart = getLocalizedDayJs(box.period.start);
         const periodEnd = getLocalizedDayJs(box.period.end);
-        const durationMinutes = Math.round(periodEnd.diff(periodStart, 'minute', true));
-        const durationText = formatActivityDuration(durationMinutes);
+        const startText = periodStart.format('HH:mm');
+        const endText = periodEnd.format('HH:mm');
         const status = box.isIdle ? 'Idling' : 'Active';
-        return `${status} (${durationText})`;
+        return `${status} (${startText} - ${endText})`;
     }
 
     function getActivityBoxActivities(box: ActivityBox) {
@@ -40,6 +40,15 @@ export function useActivityBoxes(params: {
         return activity.label ? `${activity.appName} - ${activity.label}` : activity.appName;
     }
 
+    function getTopActivity(box: ActivityBox): WindowActivityInPeriod | null {
+        const activities = box.period.windowActivities;
+        if (!activities || activities.length === 0) return null;
+        return activities.reduce<WindowActivityInPeriod>(
+            (top, a) => (a.count > top.count ? a : top),
+            activities[0]!
+        );
+    }
+
     const activityBoxes = computed<ActivityBox[]>(() => {
         const periods = params.activityPeriods();
         if (!periods || periods.length === 0) return [];
@@ -99,5 +108,6 @@ export function useActivityBoxes(params: {
         getActivityBoxActivities,
         getActivityPercentage,
         getActivityText,
+        getTopActivity,
     };
 }
diff --git a/resources/js/packages/ui/src/FullCalendar/useSlotSelection.ts b/resources/js/packages/ui/src/FullCalendar/useSlotSelection.ts
index 9b462c98..f5c17ebc 100644
--- a/resources/js/packages/ui/src/FullCalendar/useSlotSelection.ts
+++ b/resources/js/packages/ui/src/FullCalendar/useSlotSelection.ts
@@ -29,7 +29,7 @@ export function useSlotSelection(params: {
     function onSlotPointerDown(e: PointerEvent) {
         if (e.button !== 0) return;
         const target = e.target as HTMLElement;
-        if (target.closest('.fc-event') || target.closest('.activity-status-box')) return;
+        if (target.closest('.fc-event')) return;
 
         const dateStr = params.getDayFromClientX(e.clientX);
         if (!dateStr) return;
diff --git a/resources/js/packages/ui/src/tooltip/TooltipContent.vue b/resources/js/packages/ui/src/tooltip/TooltipContent.vue
index 604a5e2c..ffcfe7f5 100644
--- a/resources/js/packages/ui/src/tooltip/TooltipContent.vue
+++ b/resources/js/packages/ui/src/tooltip/TooltipContent.vue
@@ -29,7 +29,7 @@ const forwarded = useForwardPropsEmits(delegatedProps, emits);
             v-bind="{ ...forwarded, ...$attrs }"
             :class="
                 cn(
-                    'z-50 overflow-hidden rounded-md bg-primary px-3 py-1.5 text-xs text-primary-foreground animate-in fade-in-0 zoom-in-95 data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:zoom-out-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2',
+                    'z-50 overflow-hidden rounded-md shadow-dropdown border border-border bg-primary px-3 py-1.5 text-xs text-primary-foreground animate-in fade-in-0 zoom-in-95 data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:zoom-out-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2',
                     props.class
                 )
             ">