feat: Class-specific announcements

templates/management_page.html

@@ -42,6 +42,9 @@
         .cell-actions {{ white-space: nowrap; }}
 
         .flag {{ display: inline-block; padding: 0.2rem 0.55rem; border-radius: 999px; background: #dbeafe; color: #1e40af; font-size: 0.75rem; font-weight: 500; white-space: nowrap; }}
+        .class-pill {{ display: inline-block; padding: 0.2rem 0.55rem; border-radius: 999px; background: #f0fdf4; color: #166534; font-size: 0.75rem; font-weight: 500; white-space: nowrap; }}
+        .class-pill.all {{ background: #f1f5f9; color: #64748b; font-style: italic; }}
+        .field-hint {{ font-size: 0.8rem; color: #94a3b8; font-weight: 400; }}
         .empty {{ padding: 3rem 1rem; text-align: center; color: #94a3b8; font-size: 0.95rem; }}
 
         .pagination {{ display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; padding: 1rem 1.25rem; background: #fff; border-top: 1px solid #e2e8f0; }}
@@ -93,6 +96,7 @@
                         <th>Text</th>
                         <th>Start</th>
                         <th>End</th>
+                        <th>For</th>
                         <th>Flags</th>
                         <th>Actions</th>
                     </tr>
@@ -125,7 +129,12 @@
                     End date
                     <input type="date" name="end_date" required>
                 </label>
-                <label style="gap:0.5rem">
+                <label>
+                    Classes
+                    <input id="classes-input" name="classes" placeholder="e.g. C2c, A1" autocomplete="off">
+                    <span class="field-hint">Leave empty for all classes. Separate multiple with commas.</span>
+                </label>
+                <label id="flags-section" style="gap:0.5rem">
                     Flags
                     <div class="flag-checkboxes">
                         {flags_checkboxes}
@@ -138,5 +147,23 @@
             </div>
         </form>
     </dialog>
+
+    <script>
+        document.addEventListener('DOMContentLoaded', function() {{
+            var classesInput = document.getElementById('classes-input');
+            var flagsSection = document.getElementById('flags-section');
+            function toggleFlags() {{
+                if (classesInput.value.trim() !== '') {{
+                    flagsSection.style.display = 'none';
+                    var cbs = flagsSection.querySelectorAll('input[type="checkbox"]');
+                    for (var i = 0; i < cbs.length; i++) {{ cbs[i].checked = false; }}
+                }} else {{
+                    flagsSection.style.display = '';
+                }}
+            }}
+            classesInput.addEventListener('input', toggleFlags);
+            toggleFlags();
+        }});
+    </script>
 </body>
 </html>