diff --git a/src/content/config.ts b/src/content/config.ts
index 301e407..7ccf2ca 100644
--- a/src/content/config.ts
+++ b/src/content/config.ts
@@ -4,10 +4,39 @@ import { docsSchema } from "@astrojs/starlight/schema";
 export const collections = {
   docs: defineCollection({
     schema: docsSchema({
-      extend: z.object({
-        createdAt: z.date().optional(),
-        image: z.string().optional(),
-      }),
+      extend: z
+        .object({
+          image: z.string().optional(),
+        })
+        .and(
+          // Draft pages don’t have any requirements
+          z
+            .object({
+              pagefind: z.literal(false),
+              sidebar: z.object({
+                hidden: z.literal(true),
+              }),
+            })
+
+            // Splash don’t need requirements
+            .or(
+              z.object({
+                template: z.literal("splash"),
+                pagefind: z.literal(true).optional(), // To avoid matching with the draft
+              }),
+            )
+
+            // For regular blog posts
+            .or(
+              z.object({
+                template: z.literal("doc").optional(),
+                pagefind: z.literal(true).optional(), // To avoid matching with the draft
+                createdAt: z.date(),
+                lastUpdated: z.date().optional(),
+                description: z.string().optional(), // TODO: mark as required
+              }),
+            ),
+        ),
     }),
   }),
 };