feat(ui): modularisation du css et fidélisation des composants à la maquette figma

- découpage du css par composant (navbar, hero, footer, global)
- ajustement pixel-perfect du footer (newsletter full-bleed, alignements, typographies)
- documentation et commentaires détaillés du code react et css

config/reference.php

@@ -1526,6 +1526,26 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  *     generate_final_classes?: bool|Param, // Default: true
  *     generate_final_entities?: bool|Param, // Default: false
  * }
+ * @psalm-type SymfonycastsTailwindConfig = array{
+ *     input_css?: list<scalar|Param|null>,
+ *     config_file?: scalar|Param|null, // Path to the tailwind.config.js file // Default: "%kernel.project_dir%/tailwind.config.js"
+ *     binary?: scalar|Param|null, // The tailwind binary to use instead of downloading a new one // Default: null
+ *     binary_version?: scalar|Param|null, // Tailwind CLI version to download - required unless "binary" is set (run "tailwind:init" to configure) // Default: null
+ *     binary_platform?: "auto"|"linux-arm64"|"linux-arm64-musl"|"linux-x64"|"linux-x64-musl"|"macos-arm64"|"macos-x64"|"windows-x64"|Param, // Tailwind CLI platform to download - "auto" will try to detect the platform automatically // Default: "auto"
+ *     postcss_config_file?: scalar|Param|null, // Path to PostCSS config file which is passed to the Tailwind CLI // Default: null
+ *     strict_mode?: bool|Param|null, // When enabled, an exception will be thrown if there are no built assets (default: false in `test` env, true otherwise) // Default: null
+ *     process_timeout?: int|Param, // Timeout in seconds for the Tailwind build process - use "0" to disable // Default: 60
+ * }
+ * @psalm-type WebpackEncoreConfig = array{
+ *     output_path?: scalar|Param|null, // The path where Encore is building the assets - i.e. Encore.setOutputPath()
+ *     crossorigin?: false|"anonymous"|"use-credentials"|Param, // crossorigin value when Encore.enableIntegrityHashes() is used, can be false (default), anonymous or use-credentials // Default: false
+ *     preload?: bool|Param, // preload all rendered script and link tags automatically via the http2 Link header. // Default: false
+ *     cache?: bool|Param, // Enable caching of the entry point file(s) // Default: false
+ *     strict_mode?: bool|Param, // Throw an exception if the entrypoints.json file is missing or an entry is missing from the data // Default: true
+ *     builds?: array<string, scalar|Param|null>,
+ *     script_attributes?: array<string, scalar|Param|null>,
+ *     link_attributes?: array<string, scalar|Param|null>,
+ * }
  * @psalm-type ConfigType = array{
  *     imports?: ImportsConfig,
  *     parameters?: ParametersConfig,
@@ -1539,6 +1559,8 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  *     twig_extra?: TwigExtraConfig,
  *     security?: SecurityConfig,
  *     monolog?: MonologConfig,
+ *     symfonycasts_tailwind?: SymfonycastsTailwindConfig,
+ *     webpack_encore?: WebpackEncoreConfig,
  *     "when@dev"?: array{
  *         imports?: ImportsConfig,
  *         parameters?: ParametersConfig,
@@ -1555,6 +1577,8 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  *         security?: SecurityConfig,
  *         monolog?: MonologConfig,
  *         maker?: MakerConfig,
+ *         symfonycasts_tailwind?: SymfonycastsTailwindConfig,
+ *         webpack_encore?: WebpackEncoreConfig,
  *     },
  *     "when@prod"?: array{
  *         imports?: ImportsConfig,
@@ -1569,6 +1593,8 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  *         twig_extra?: TwigExtraConfig,
  *         security?: SecurityConfig,
  *         monolog?: MonologConfig,
+ *         symfonycasts_tailwind?: SymfonycastsTailwindConfig,
+ *         webpack_encore?: WebpackEncoreConfig,
  *     },
  *     "when@test"?: array{
  *         imports?: ImportsConfig,
@@ -1584,6 +1610,8 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  *         twig_extra?: TwigExtraConfig,
  *         security?: SecurityConfig,
  *         monolog?: MonologConfig,
+ *         symfonycasts_tailwind?: SymfonycastsTailwindConfig,
+ *         webpack_encore?: WebpackEncoreConfig,
  *     },
  *     ...<string, ExtensionType|array{ // extra keys must follow the when@%env% pattern or match an extension alias
  *         imports?: ImportsConfig,