diff --git a/ht_booking/assets/views/calendar/week.html b/ht_booking/assets/views/calendar/week.html
index 5138881..daf2381 100644
--- a/ht_booking/assets/views/calendar/week.html
+++ b/ht_booking/assets/views/calendar/week.html
@@ -3,6 +3,24 @@
 {% block title %}{{ t(key="calendar-title", lang=lang) }}{% endblock title %}
 
 {% block head %}
+<style>
+  /* Sharpen the calendar grid. The daisyUI base tones give very low-contrast
+     hairline borders and dimmed text in both themes. Tying the borders and
+     the header tint to base-content keeps the table legible and easy to
+     follow on light and dark alike (public + admin calendars). */
+  #cal th,
+  #cal td {
+    border-color: hsl(var(--bc) / 0.25);
+  }
+  #cal thead tr,
+  #cal tbody td:first-child {
+    background-color: hsl(var(--bc) / 0.1);
+  }
+  #cal tbody td:first-child { opacity: 1; }
+  #cal thead .opacity-50 { opacity: 0.8; }
+  #cal td .opacity-30 { opacity: 0.7; }
+  #cal td a.opacity-30:hover { opacity: 1; }
+</style>
 {% if is_admin %}
 <style>
   /* Admin calendar — detailed-view toggle. The public calendar is unaffected. */