diff --git a/CHANGES.rst b/CHANGES.rst
index c141f54..fa822dc 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -7,6 +7,10 @@ Changelog of TRS
 
 - Date input fields now use the browser's much nicer regular date input widget.
 
+- Big UI upgrade: moved from the old bootrap 2 to tailwindcss+daisyui.
+
+- Project xls export is now date-based instead of week-based.
+
 
 3.0 (2026-01-26)
 ----------------
diff --git a/src/trs/views.py b/src/trs/views.py
index 337a931..55de599 100644
--- a/src/trs/views.py
+++ b/src/trs/views.py
@@ -2961,14 +2961,19 @@ def weeks(self):
         )
 
     @cached_property
-    def bookings_per_week_per_person(self):
-        bookings = (
-            Booking.objects.filter(booked_on=self.project, year_week__in=self.weeks)
-            .values("booked_by", "year_week")
-            .annotate(models.Sum("hours"))
-        )
+    def days(self):
+        result = []
+        for week in self.weeks:
+            result += week.days()
+        return result
+
+    @cached_property
+    def bookings_per_day_per_person(self):
+        bookings = Booking.objects.filter(
+            booked_on=self.project, year_week__in=self.weeks
+        ).values("booked_by", "date", "hours")
         return {
-            (booking["booked_by"], booking["year_week"]): (booking["hours__sum"])
+            (booking["booked_by"], booking["date"]): (booking["hours"])
             for booking in bookings
         }
 
@@ -2997,7 +3002,7 @@ def header_line(self):
             "Verlies",
             "",
         ]
-        result += [week.as_param() for week in self.weeks]
+        result += [day.isoformat() for day in self.days]
         return result
 
     @property
@@ -3020,8 +3025,8 @@ def excel_lines(self):
                 "",
             ]
             result += [
-                self.bookings_per_week_per_person.get((person.pk, week.pk), 0)
-                for week in self.weeks
+                self.bookings_per_day_per_person.get((person.pk, day), 0)
+                for day in self.days
             ]
 
             yield result