diff --git a/migrations/0006_add_course_materials.sql b/migrations/0006_add_course_materials.sql
new file mode 100644
index 0000000..08d3b60
--- /dev/null
+++ b/migrations/0006_add_course_materials.sql
@@ -0,0 +1,17 @@
+-- Migration 0006: Add course_materials table for activity file attachments
+
+CREATE TABLE IF NOT EXISTS course_materials (
+ id TEXT PRIMARY KEY,
+ activity_id TEXT NOT NULL,
+ title TEXT NOT NULL,
+ description TEXT,
+ file_key TEXT NOT NULL,
+ uploaded_by TEXT,
+ created_at TEXT NOT NULL DEFAULT (datetime('now')),
+ FOREIGN KEY (activity_id) REFERENCES activities(id) ON DELETE CASCADE,
+ FOREIGN KEY (uploaded_by) REFERENCES users(id) ON DELETE SET NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_materials_activity ON course_materials(activity_id);
+CREATE INDEX IF NOT EXISTS idx_materials_uploader ON course_materials(uploaded_by);
+CREATE INDEX IF NOT EXISTS idx_materials_created ON course_materials(activity_id, created_at DESC);
diff --git a/public/activity.html b/public/activity.html
index 5dde4c0..a29781a 100644
--- a/public/activity.html
+++ b/public/activity.html
@@ -9,73 +9,77 @@
@@ -86,27 +90,21 @@
-
-
-
Discover Learning Activities
Browse courses, meetups, workshops, and study groups. All sessions encrypted and secure.