Extract Button primitive, migrate all call sites

Variants primary/accent/ghost/done with scoped styles.
Disabled handling unified; block/size/style props cover
login stretch, done-lg, save-check positioning.
Delete btn-* globals and dead page overrides.

9 files changed, 181 insertions, 156 deletions

diff --git a/src/app.css b/src/app.css
index b219650..87817bd 100644
--- a/src/app.css
+++ b/src/app.css
@@ -206,49 +206,6 @@
 	box-shadow: 0 0 0 3px var(--shadow-accent-focus);
 }
 
-/* Buttons */
-.btn-primary {
-	padding: 0.75rem 1.5rem;
-	border: none;
-	border-radius: 0.75rem;
-	background: var(--accent);
-	color: var(--white);
-	font-size: 0.9375rem;
-	font-weight: 500;
-	align-self: flex-start;
-	cursor: pointer;
-	transition: all 0.2s ease;
-	box-shadow: 0 1px 2px var(--shadow);
-}
-
-.btn-primary:hover {
-	background: var(--accent-hover);
-	transform: translateY(-1px);
-	box-shadow: 0 4px 8px var(--shadow-accent-lg);
-}
-
-.btn-ghost {
-	flex-shrink: 0;
-	width: 2rem;
-	aspect-ratio: 1;
-	padding: 0;
-	border: none;
-	border-radius: 0.625rem;
-	background: transparent;
-	color: var(--text-secondary);
-	font-size: 1.25rem;
-	display: flex;
-	align-items: center;
-	justify-content: center;
-	cursor: pointer;
-	transition: all 0.2s ease;
-}
-
-.btn-ghost:hover {
-	background: var(--danger-hover-bg);
-	color: var(--danger);
-}
-
 .score {
 	flex-shrink: 0;
 	min-width: 2.75rem;
@@ -296,32 +253,6 @@
 	min-width: 0;
 }
 
-.btn-accent {
-	width: 3rem;
-	height: 3rem;
-	flex-shrink: 0;
-	padding: 0;
-	border: none;
-	border-radius: 0.75rem;
-	background: var(--accent);
-	color: var(--white);
-	font-size: 1.25rem;
-	font-weight: 500;
-	font-family: inherit;
-	cursor: pointer;
-	display: flex;
-	align-items: center;
-	justify-content: center;
-	transition: all 0.2s ease;
-	box-shadow: 0 1px 2px var(--shadow);
-}
-
-.btn-accent:hover {
-	background: var(--accent-hover);
-	transform: translateY(-1px);
-	box-shadow: 0 4px 8px var(--shadow-accent-lg);
-}
-
 .status {
 	flex-shrink: 0;
 	display: inline-flex;
@@ -378,20 +309,3 @@
 	visibility: visible;
 	opacity: 1;
 }
-
-.btn-done {
-	flex-shrink: 0;
-	padding: 0.5rem 0.875rem;
-	border: none;
-	border-radius: 0.625rem;
-	background: var(--success);
-	color: var(--white);
-	font-size: 0.875rem;
-	font-weight: 500;
-	transition: all 0.2s ease;
-}
-
-.btn-done:hover {
-	filter: brightness(1.05);
-	transform: translateY(-1px);
-}
diff --git a/src/lib/components/Button.svelte b/src/lib/components/Button.svelte
new file mode 100644
index 0000000..30e9fc2
--- /dev/null
+++ b/src/lib/components/Button.svelte
@@ -0,0 +1,150 @@
+<script lang="ts">
+	import type { Snippet } from 'svelte';
+
+	let {
+		variant = 'primary',
+		type = 'submit',
+		disabled = false,
+		name,
+		value,
+		ariaLabel,
+		block = false,
+		size = 'md',
+		style,
+		class: klass = '',
+		onclick,
+		children,
+	}: {
+		variant?: 'primary' | 'accent' | 'ghost' | 'done';
+		type?: 'button' | 'submit' | 'reset';
+		disabled?: boolean;
+		name?: string;
+		value?: string | number;
+		ariaLabel?: string;
+		block?: boolean;
+		size?: 'md' | 'lg';
+		style?: string;
+		class?: string;
+		onclick?: (e: MouseEvent) => void;
+		children: Snippet;
+	} = $props();
+
+	const cls = $derived(
+		[variant, size === 'lg' ? 'lg' : '', block ? 'block' : '', klass]
+			.filter(Boolean)
+			.join(' '),
+	);
+</script>
+
+<button
+	{type}
+	{disabled}
+	{name}
+	{value}
+	aria-label={ariaLabel}
+	class={cls}
+	{style}
+	{onclick}
+>
+	{@render children()}
+</button>
+
+<style>
+	button {
+		cursor: pointer;
+		font-family: inherit;
+		transition: all 0.2s ease;
+		border: none;
+	}
+
+	button:disabled {
+		opacity: 0.5;
+		cursor: not-allowed;
+		transform: none;
+		box-shadow: none;
+	}
+
+	.primary {
+		padding: 0.75rem 1.5rem;
+		border-radius: 0.75rem;
+		background: var(--accent);
+		color: var(--white);
+		font-size: 0.9375rem;
+		font-weight: 500;
+		align-self: flex-start;
+		box-shadow: 0 1px 2px var(--shadow);
+	}
+
+	.primary:hover:not(:disabled) {
+		background: var(--accent-hover);
+		transform: translateY(-1px);
+		box-shadow: 0 4px 8px var(--shadow-accent-lg);
+	}
+
+	.accent {
+		width: 3rem;
+		height: 3rem;
+		flex-shrink: 0;
+		padding: 0;
+		border-radius: 0.75rem;
+		background: var(--accent);
+		color: var(--white);
+		font-size: 1.25rem;
+		font-weight: 500;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		box-shadow: 0 1px 2px var(--shadow);
+	}
+
+	.accent:hover:not(:disabled) {
+		background: var(--accent-hover);
+		transform: translateY(-1px);
+		box-shadow: 0 4px 8px var(--shadow-accent-lg);
+	}
+
+	.ghost {
+		flex-shrink: 0;
+		width: 2rem;
+		aspect-ratio: 1;
+		padding: 0;
+		border-radius: 0.625rem;
+		background: transparent;
+		color: var(--text-secondary);
+		font-size: 1.25rem;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+	}
+
+	.ghost:hover:not(:disabled) {
+		background: var(--danger-hover-bg);
+		color: var(--danger);
+	}
+
+	.done {
+		flex-shrink: 0;
+		padding: 0.5rem 0.875rem;
+		border-radius: 0.625rem;
+		background: var(--success);
+		color: var(--white);
+		font-size: 0.875rem;
+		font-weight: 500;
+	}
+
+	.done:hover:not(:disabled) {
+		filter: brightness(1.05);
+		transform: translateY(-1px);
+	}
+
+	.done.lg {
+		padding: 0.75rem 1.25rem;
+		border-radius: 0.75rem;
+		font-size: 0.9375rem;
+	}
+
+	.block {
+		align-self: stretch;
+		width: 100%;
+	}
+</style>
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
index 5214bd6..1adfb6b 100644
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
 	import { enhance } from '$app/forms';
 	import ScoreBadge from '$lib/components/ScoreBadge.svelte';
+	import Button from '$lib/components/Button.svelte';
 
 	let { data, form } = $props();
 
@@ -22,7 +23,7 @@
 			placeholder="Nouveau projet..."
 			autocomplete="off"
 		/>
-		<button class="btn-accent" type="submit" aria-label="Ajouter">+</button>
+		<Button variant="accent" ariaLabel="Ajouter">+</Button>
 	</form>
 
 	{#if form?.error}
diff --git a/src/routes/groceries/catalog/+page.svelte b/src/routes/groceries/catalog/+page.svelte
index 2b92a35..a7f3c0e 100644
--- a/src/routes/groceries/catalog/+page.svelte
+++ b/src/routes/groceries/catalog/+page.svelte
@@ -2,6 +2,7 @@
 	import { enhance } from '$app/forms';
 	import { SvelteSet } from 'svelte/reactivity';
 	import GroceryRow from '$lib/components/GroceryRow.svelte';
+	import Button from '$lib/components/Button.svelte';
 	import { groupByCategory } from '$lib/shared/group-by-category';
 
 	let { data, form } = $props();
@@ -45,13 +46,9 @@
 					<option value={cat.id}>{cat.name}</option>
 				{/each}
 			</select>
-			<button
-				class="btn-primary"
-				type="submit"
-				disabled={selectedIds.size === 0}
+			<Button disabled={selectedIds.size === 0}
+				>Mettre à jour ({selectedIds.size})</Button
 			>
-				Mettre à jour ({selectedIds.size})
-			</button>
 		</form>
 	</div>
 {/if}
@@ -118,19 +115,6 @@
 		min-width: 0;
 	}
 
-	.bulk-bar .btn-primary {
-		padding: 0.75rem 1rem;
-		align-self: center;
-		white-space: nowrap;
-	}
-
-	.bulk-bar .btn-primary:disabled {
-		opacity: 0.5;
-		cursor: not-allowed;
-		transform: none;
-		box-shadow: none;
-	}
-
 	.error {
 		margin-bottom: 1rem;
 	}
diff --git a/src/routes/groceries/categories/+page.svelte b/src/routes/groceries/categories/+page.svelte
index af85adf..3d6d5b3 100644
--- a/src/routes/groceries/categories/+page.svelte
+++ b/src/routes/groceries/categories/+page.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
 	import { enhance } from '$app/forms';
 	import type { Category } from '$lib/server/services/types';
+	import Button from '$lib/components/Button.svelte';
 
 	let { data, form } = $props();
 	let name = $state('');
@@ -46,7 +47,7 @@
 			placeholder="Nouvelle catégorie..."
 			autocomplete="off"
 		/>
-		<button class="btn-accent" type="submit" aria-label="Ajouter">+</button>
+		<Button variant="accent" ariaLabel="Ajouter">+</Button>
 	</form>
 
 	{#if form?.error}
@@ -81,15 +82,9 @@
 				>
 					<span class="drag-handle">⋮⋮</span>
 					<span class="cat-name">{cat.name}</span>
-					<button
-						class="btn-ghost"
-						name="id"
-						value={cat.id}
-						type="submit"
-						aria-label="Supprimer"
+					<Button variant="ghost" name="id" value={cat.id} ariaLabel="Supprimer"
+						>&times;</Button
 					>
-						&times;
-					</button>
 				</li>
 			{/each}
 		</ul>
diff --git a/src/routes/grocery/[id]/+page.svelte b/src/routes/grocery/[id]/+page.svelte
index 4a96f32..8a0a479 100644
--- a/src/routes/grocery/[id]/+page.svelte
+++ b/src/routes/grocery/[id]/+page.svelte
@@ -1,5 +1,6 @@
 <script lang="ts">
 	import { enhance } from '$app/forms';
+	import Button from '$lib/components/Button.svelte';
 
 	let { data, form } = $props();
 	let name = $state('');
@@ -132,7 +133,7 @@
 				/>
 			</label>
 		</div>
-		<button class="btn-primary" type="submit">Ajouter une référence</button>
+		<Button>Ajouter une référence</Button>
 	</form>
 
 	{#if form?.error}
@@ -154,15 +155,9 @@
 							<span class="ref-detail">Note : {ref.qualityScore}/100</span>
 						{/if}
 					</div>
-					<button
-						class="btn-ghost"
-						name="id"
-						value={ref.id}
-						type="submit"
-						aria-label="Supprimer"
+					<Button variant="ghost" name="id" value={ref.id} ariaLabel="Supprimer"
+						>&times;</Button
 					>
-						&times;
-					</button>
 				</li>
 			{/each}
 		</ul>
diff --git a/src/routes/login/+page.svelte b/src/routes/login/+page.svelte
index 303043f..3da1529 100644
--- a/src/routes/login/+page.svelte
+++ b/src/routes/login/+page.svelte
@@ -1,4 +1,5 @@
 <script lang="ts">
+	import Button from '$lib/components/Button.svelte';
 	let { data, form } = $props();
 </script>
 
@@ -23,7 +24,7 @@
 				/>
 			</label>
 			<input type="hidden" name="next" value={data.next} />
-			<button class="btn-primary" type="submit">Entrer</button>
+			<Button block>Entrer</Button>
 		</form>
 
 		{#if form?.error}
@@ -73,10 +74,6 @@
 		gap: 1rem;
 	}
 
-	.btn-primary {
-		align-self: stretch;
-	}
-
 	.error {
 		margin-top: 1rem;
 	}
diff --git a/src/routes/projects/[id]/+page.svelte b/src/routes/projects/[id]/+page.svelte
index 8a3561b..2efe05b 100644
--- a/src/routes/projects/[id]/+page.svelte
+++ b/src/routes/projects/[id]/+page.svelte
@@ -4,6 +4,7 @@
 	import HealthChart from '$lib/components/HealthChart.svelte';
 	import ScoreBadge from '$lib/components/ScoreBadge.svelte';
 	import StatusBadge from '$lib/components/StatusBadge.svelte';
+	import Button from '$lib/components/Button.svelte';
 	import {
 		formatFrequency,
 		parseIntervalToDays,
@@ -82,14 +83,13 @@
 			autocomplete="off"
 			aria-label="Intervalle (ex: 1d, 2w, 3m)"
 		/>
-		<button
-			class="btn-accent"
-			type="submit"
+		<Button
+			variant="accent"
 			disabled={!name.trim() || frequencyDays === null}
-			aria-label="Ajouter"
+			ariaLabel="Ajouter"
 		>
 			+
-		</button>
+		</Button>
 	</form>
 
 	{#if frequency !== '' && frequencyDays === null}
@@ -105,12 +105,12 @@
 			<li class="item-row item-row--card routine-row">
 				<form method="POST" action="?/complete" use:enhance>
 					<input type="hidden" name="id" value={routine.id} />
-					<button type="submit" class="btn-ghost">
+					<Button variant="ghost">
 						<StatusBadge
 							status={routine.status}
 							overdueDays={routine.overdueDays}
 						/>
-					</button>
+					</Button>
 				</form>
 				<div class="routine-info">
 					<a
diff --git a/src/routes/projects/[projectId]/routine/[routineId]/+page.svelte b/src/routes/projects/[projectId]/routine/[routineId]/+page.svelte
index 74880cb..867719a 100644
--- a/src/routes/projects/[projectId]/routine/[routineId]/+page.svelte
+++ b/src/routes/projects/[projectId]/routine/[routineId]/+page.svelte
@@ -3,6 +3,7 @@
 	import HealthChart from '$lib/components/HealthChart.svelte';
 	import ScoreBadge from '$lib/components/ScoreBadge.svelte';
 	import StatusBadge from '$lib/components/StatusBadge.svelte';
+	import Button from '$lib/components/Button.svelte';
 	import {
 		formatFrequency,
 		parseIntervalToDays,
@@ -111,16 +112,15 @@
 			{#if frequency !== '' && frequencyDays === null}
 				<p class="error">Intervalle invalide — ex : 1d, 2w, 3m, 1y</p>
 			{/if}
-			<button
-				class="btn-primary btn-save"
-				type="submit"
+			<Button
 				disabled={!name.trim() || frequencyDays === null}
+				style="position: relative; padding-right: 2.75rem;"
 			>
-				<span class="btn-save-label">Enregistrer</span>
-				<span class="btn-save-check" class:visible={saved} aria-hidden="true"
+				<span>Enregistrer</span>
+				<span class="save-check" class:visible={saved} aria-hidden="true"
 					>✓</span
 				>
-			</button>
+			</Button>
 		</form>
 	{/if}
 
@@ -170,7 +170,7 @@
 				placeholder="Note (optionnel)"
 				autocomplete="off"
 			/>
-			<button class="btn-done btn-done-lg" type="submit">Fait</button>
+			<Button variant="done" size="lg">Fait</Button>
 		</form>
 	{/if}
 
@@ -259,12 +259,6 @@
 		flex: 1;
 	}
 
-	.btn-done-lg {
-		padding: 0.75rem 1.25rem;
-		border-radius: 0.75rem;
-		font-size: 0.9375rem;
-	}
-
 	.completion-row {
 		flex-wrap: wrap;
 		gap: 0.25rem 0.75rem;
@@ -298,12 +292,7 @@
 		color: var(--danger);
 	}
 
-	.btn-save {
-		position: relative;
-		padding-right: 2.75rem;
-	}
-
-	.btn-save-check {
+	.save-check {
 		position: absolute;
 		right: 1rem;
 		top: 50%;
@@ -312,7 +301,7 @@
 		transition: opacity 0.2s ease;
 	}
 
-	.btn-save-check.visible {
+	.save-check.visible {
 		opacity: 1;
 	}
 </style>