Feat: breakpoints CSS en @custom-media via postcss-custom-media

- postcss.config.js: plugin postcss-custom-media
- variables.css: @custom-media --mobile / --tablet / --tablet-only
- Remplacement de tous les max-width: 700px et 912px hardcodés
  par @media (--mobile), (--tablet), (--tablet-only)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package-lock.json

@@ -16,7 +16,100 @@
         "vite": "7.0.4"
       },
       "devDependencies": {
-        "fs-extra": "^11.3.3"
+        "fs-extra": "^11.3.3",
+        "postcss": "^8.5.8",
+        "postcss-custom-media": "^12.0.1"
+      }
+    },
+    "node_modules/@csstools/cascade-layer-name-parser": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/@csstools/cascade-layer-name-parser/-/cascade-layer-name-parser-3.0.0.tgz",
+      "integrity": "sha512-/3iksyevwRfSJx5yH0RkcrcYXwuhMQx3Juqf40t97PeEy2/Mz2TItZ/z/216qpe4GgOyFBP8MKIwVvytzHmfIQ==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=20.19.0"
+      },
+      "peerDependencies": {
+        "@csstools/css-parser-algorithms": "^4.0.0",
+        "@csstools/css-tokenizer": "^4.0.0"
+      }
+    },
+    "node_modules/@csstools/css-parser-algorithms": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@csstools/css-parser-algorithms/-/css-parser-algorithms-4.0.0.tgz",
+      "integrity": "sha512-+B87qS7fIG3L5h3qwJ/IFbjoVoOe/bpOdh9hAjXbvx0o8ImEmUsGXN0inFOnk2ChCFgqkkGFQ+TpM5rbhkKe4w==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=20.19.0"
+      },
+      "peerDependencies": {
+        "@csstools/css-tokenizer": "^4.0.0"
+      }
+    },
+    "node_modules/@csstools/css-tokenizer": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@csstools/css-tokenizer/-/css-tokenizer-4.0.0.tgz",
+      "integrity": "sha512-QxULHAm7cNu72w97JUNCBFODFaXpbDg+dP8b/oWFAZ2MTRppA3U00Y2L1HqaS4J6yBqxwa/Y3nMBaxVKbB/NsA==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=20.19.0"
+      }
+    },
+    "node_modules/@csstools/media-query-list-parser": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@csstools/media-query-list-parser/-/media-query-list-parser-5.0.0.tgz",
+      "integrity": "sha512-T9lXmZOfnam3eMERPsszjY5NK0jX8RmThmmm99FZ8b7z8yMaFZWKwLWGZuTwdO3ddRY5fy13GmmEYZXB4I98Eg==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=20.19.0"
+      },
+      "peerDependencies": {
+        "@csstools/css-parser-algorithms": "^4.0.0",
+        "@csstools/css-tokenizer": "^4.0.0"
       }
     },
     "node_modules/@esbuild/aix-ppc64": {
@@ -1161,9 +1254,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.5.6",
+      "version": "8.5.8",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.8.tgz",
-      "integrity": "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==",
+      "integrity": "sha512-OW/rX8O/jXnm82Ey1k44pObPtdblfiuWnrd8X7GJ7emImCOstunGbXUpp7HdBrFQX6rJzn3sPT397Wp5aCwCHg==",
       "funding": [
         {
           "type": "opencollective",
@@ -1188,6 +1281,35 @@
         "node": "^10 || ^12 || >=14"
       }
     },
+    "node_modules/postcss-custom-media": {
+      "version": "12.0.1",
+      "resolved": "https://registry.npmjs.org/postcss-custom-media/-/postcss-custom-media-12.0.1.tgz",
+      "integrity": "sha512-66syE14+VeqkUf0rRX0bvbTCbNRJF132jD+ceo8th1dap2YJEAqpdh5uG98CE3IbgHT7m9XM0GIlOazNWqQdeA==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "@csstools/cascade-layer-name-parser": "^3.0.0",
+        "@csstools/css-parser-algorithms": "^4.0.0",
+        "@csstools/css-tokenizer": "^4.0.0",
+        "@csstools/media-query-list-parser": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=20.19.0"
+      },
+      "peerDependencies": {
+        "postcss": "^8.4"
+      }
+    },
     "node_modules/regexparam": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/regexparam/-/regexparam-1.3.0.tgz",

package.json

@@ -24,6 +24,8 @@
     "vite": "7.0.4"
   },
   "devDependencies": {
-    "fs-extra": "^11.3.3"
+    "fs-extra": "^11.3.3",
+    "postcss": "^8.5.8",
+    "postcss-custom-media": "^12.0.1"
   }
 }

postcss.config.js

@@ -0,0 +1,5 @@
+import customMedia from 'postcss-custom-media'
+
+export default {
+  plugins: [customMedia()]
+}

src/components/layout/Header.svelte

@@ -166,7 +166,7 @@
   }
 
   /* Mobile — var(--breakpoint-mobile) = 700px */
-  @media screen and (max-width: 700px) {
+  @media (--mobile) {
     .navbar {
       min-height: 8vh;
       padding: 10vh 0 1vh;
@@ -179,7 +179,7 @@
   }
 
   /* Tablet — var(--breakpoint-tablet) = 912px */
-  @media screen and (min-width: 701px) and (max-width: 912px) {
+  @media (--tablet-only) {
     .navbar-item {
       font-size: var(--font-size-paragraph-tablet);
       padding: 1vmax 1.8vmax;

src/components/layout/Menu.svelte

@@ -244,7 +244,7 @@
   }
 
   /* Mobile — var(--breakpoint-mobile) = 700px */
-  @media screen and (max-width: 700px) {
+  @media (--mobile) {
     .menu-list {
       font-size: var(--font-size-subtitle-mobile);
       grid-area: 6/4 / span 8 / span 8;
@@ -269,7 +269,7 @@
   }
 
   /* Tablet — var(--breakpoint-tablet) = 912px */
-  @media screen and (min-width: 701px) and (max-width: 912px) {
+  @media (--tablet-only) {
     .menu-list {
       font-size: var(--font-size-title-section-tablet);
     }

src/styles/variables.css

@@ -1,3 +1,8 @@
+/* Custom media queries — utilisables dans @media (--mobile) / @media (--tablet) */
+@custom-media --mobile      (max-width: 700px);
+@custom-media --tablet      (max-width: 912px);
+@custom-media --tablet-only (min-width: 701px) and (max-width: 912px);
+
 /* CSS Variables */
 :root {
   /* Colors */
@@ -6,10 +11,6 @@
   --color-background: #000;
   --color-text: #fff;
 
-  /* BREAKPOINTS (référence — non utilisables directement dans @media)
-   * --breakpoint-mobile : 700px
-   * --breakpoint-tablet : 912px
-   */
   --breakpoint-mobile: 700px;
   --breakpoint-tablet: 912px;
 

src/views/Expertise.svelte

@@ -363,7 +363,7 @@
   }
 
   /* Mobile (≤ 700px) */
-  @media screen and (max-width: 700px) {
+  @media (--mobile) {
     .expertise-title {
       grid-area: 5/4 / span 1 / span 7;
       font-size: var(--font-size-title-main-mobile);
@@ -379,7 +379,7 @@
   }
 
   /* Tablet (701–912px) */
-  @media screen and (min-width: 701px) and (max-width: 912px) {
+  @media (--tablet-only) {
     .expertise-title {
       grid-area: 5/6 / span 4 / span 12;
       font-size: var(--font-size-title-main-tablet);

src/views/Home.svelte

@@ -175,7 +175,7 @@
     }
   }
 
-  @media screen and (min-width: 701px) and (max-width: 912px) {
+  @media (--tablet-only) {
     .home-subtitle {
       font-size: var(--font-size-subtitle-tablet);
       width: 70%;

src/views/Play.svelte

@@ -386,7 +386,7 @@
   }
 
   /* --- Mobile (≤ 700px) --- */
-  @media screen and (max-width: 700px) {
+  @media (--mobile) {
     .game-preview {
       display: none;
     }

src/views/Portfolio.svelte

@@ -291,7 +291,7 @@
   }
 
   /* Mobile (≤ 700px) */
-  @media screen and (max-width: 700px) {
+  @media (--mobile) {
     .portfolio-gallery {
       grid-area: 1/1 / span 20 / span 20;
       opacity: 0.3;