feat: compact sticky add form with Add + Edit buttons

- Sticky navbar + sticky add bar on list page
- Add button: quick add to list
- Edit button: add + redirect to detail page for references
- Removed layout top padding for seamless sticky behavior

4 files changed, 75 insertions, 47 deletions

diff --git a/src/lib/components/Nav.svelte b/src/lib/components/Nav.svelte
index 2899bfc..f6c83fc 100644
--- a/src/lib/components/Nav.svelte
+++ b/src/lib/components/Nav.svelte
@@ -15,9 +15,12 @@
 	.navbar {
 		display: flex;
 		gap: 0.25rem;
-		margin-bottom: 1.5rem;
+		padding: 0.5rem 0;
 		border-bottom: 1px solid #ddd;
-		padding-bottom: 0.5rem;
+		position: sticky;
+		top: 0;
+		background: #fafafa;
+		z-index: 20;
 	}
 
 	.navbar a {
diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index 8ba4f8f..5999926 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -18,6 +18,6 @@
 	.app {
 		max-width: 48rem;
 		margin: 0 auto;
-		padding: 1rem;
+		padding: 0 1rem;
 	}
 </style>
diff --git a/src/routes/+page.server.ts b/src/routes/+page.server.ts
index d548d09..55ac82d 100644
--- a/src/routes/+page.server.ts
+++ b/src/routes/+page.server.ts
@@ -1,4 +1,4 @@
-import { fail } from '@sveltejs/kit';
+import { fail, redirect } from '@sveltejs/kit';
 import { db } from '$lib/server/db';
 import { groceries, categories, references } from '$lib/server/db/schema';
 import { eq, desc } from 'drizzle-orm';
@@ -87,4 +87,41 @@ export const actions: Actions = {
 
 		return { success: true };
 	},
+
+	addAndEdit: async ({ request }) => {
+		const data = await request.formData();
+		const name = data.get('name')?.toString().trim();
+		const categoryId = data.get('category_id')?.toString() || null;
+
+		if (!name) {
+			return fail(400, { error: 'Name is required' });
+		}
+
+		const [existing] = await db
+			.select()
+			.from(groceries)
+			.where(eq(groceries.name, name))
+			.limit(1);
+
+		if (existing) {
+			await db
+				.update(groceries)
+				.set({
+					checked: false,
+					categoryId: categoryId ? Number(categoryId) : existing.categoryId,
+				})
+				.where(eq(groceries.id, existing.id));
+			throw redirect(303, `/grocery/${existing.id}`);
+		} else {
+			const [inserted] = await db
+				.insert(groceries)
+				.values({
+					name,
+					categoryId: categoryId ? Number(categoryId) : null,
+					createdAt: new Date().toISOString(),
+				})
+				.returning();
+			throw redirect(303, `/grocery/${inserted.id}`);
+		}
+	},
 };
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
index 57ce3d0..767c87e 100644
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -17,27 +17,16 @@
 	}
 </script>
 
-<form class="add-form" method="POST" action="?/add" use:enhance>
-	<label>
-		<span class="label">Item</span>
-		<input
-			type="text"
-			name="name"
-			bind:value={name}
-			placeholder="Add an item..."
-			autocomplete="off"
-		/>
-	</label>
-	<label>
-		<span class="label">Category</span>
-		<select name="category_id">
-			<option value="">—</option>
-			{#each data?.categories ?? [] as cat (cat.id)}
-				<option value={cat.id}>{cat.name}</option>
-			{/each}
-		</select>
-	</label>
+<form class="add-bar" method="POST" action="?/add" use:enhance>
+	<input
+		type="text"
+		name="name"
+		bind:value={name}
+		placeholder="Add an item..."
+		autocomplete="off"
+	/>
 	<button type="submit">Add</button>
+	<button type="submit" formaction="?/addAndEdit">Edit</button>
 </form>
 
 {#if form?.error}
@@ -75,49 +64,48 @@
 {/if}
 
 <style>
-	.add-form {
+	.add-bar {
 		display: flex;
-		flex-direction: column;
 		gap: 0.5rem;
-		margin-bottom: 1rem;
+		padding: 0.5rem 1rem 0.5rem;
+		position: sticky;
+		top: 3rem;
+		background: #fafafa;
+		z-index: 10;
 	}
 
-	.add-form label {
-		display: flex;
-		flex-direction: column;
-		gap: 0.25rem;
-	}
-
-	.label {
-		font-size: 0.75rem;
-		font-weight: 600;
-		text-transform: uppercase;
-		color: #999;
-	}
-
-	input,
-	select {
+	input {
+		flex: 1;
 		padding: 0.75rem;
 		border: 1px solid #ccc;
 		border-radius: 0.5rem;
 		font-size: 1rem;
 		font-family: inherit;
 		background: #fff;
+		min-width: 0;
 	}
 
-	.add-form button[type='submit'] {
-		padding: 0.75rem 1.25rem;
+	.add-bar button {
+		padding: 0.75rem 1rem;
 		border: none;
 		border-radius: 0.5rem;
+		font-size: 1rem;
+		font-family: inherit;
+		cursor: pointer;
+	}
+
+	.add-bar button[type='submit']:not([formaction]) {
 		background: #333;
 		color: #fff;
-		font-size: 1rem;
-		align-self: flex-start;
+	}
+
+	.add-bar button[formaction] {
+		background: #e0e0e0;
+		color: #333;
 	}
 
 	.error {
 		color: #d00;
-		margin-top: -0.5rem;
 		margin-bottom: 1rem;
 	}