feat: add WordPress theme hooklab (réplique exacte du site Next.js)

- style.css : design system complet (navy #1B2A4A, orange #E8772E, Inter, animations)
- functions.php : enqueue scripts/styles + handler AJAX formulaire contact
- header.php : navbar sticky avec burger mobile
- front-page.php : toutes les sections (Hero, Problématique, Process, Demos, About, FAQ, Contact)
- footer.php : footer 3 colonnes + bottom bar légal
- js/main.js : scroll reveal, FAQ accordion, menu mobile, formulaire AJAX
- index.php / page.php : templates fallback

https://claude.ai/code/session_01PzA98VhLMmsHpzs7gnLHGs

wordpress/themes/hooklab/functions.php

@@ -0,0 +1,45 @@
+<?php
+if (!defined('ABSPATH')) exit;
+
+/* ── Setup ── */
+add_action('after_setup_theme', function () {
+    add_theme_support('title-tag');
+    add_theme_support('post-thumbnails');
+    register_nav_menus(['primary' => 'Navigation principale']);
+});
+
+/* ── Enqueue ── */
+add_action('wp_enqueue_scripts', function () {
+    wp_enqueue_style('inter-font', 'https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap', [], null);
+    wp_enqueue_style('hooklab-style', get_stylesheet_uri(), ['inter-font'], '1.0.0');
+    wp_enqueue_script('hooklab-js', get_template_directory_uri() . '/js/main.js', [], '1.0.0', true);
+    wp_localize_script('hooklab-js', 'hlAjax', [
+        'url'   => admin_url('admin-ajax.php'),
+        'nonce' => wp_create_nonce('hl_contact_nonce'),
+    ]);
+});
+
+/* ── Contact form AJAX ── */
+add_action('wp_ajax_hl_contact',        'hl_handle_contact');
+add_action('wp_ajax_nopriv_hl_contact', 'hl_handle_contact');
+
+function hl_handle_contact() {
+    check_ajax_referer('hl_contact_nonce', 'nonce');
+
+    $name   = sanitize_text_field($_POST['name']   ?? '');
+    $phone  = sanitize_text_field($_POST['phone']  ?? '');
+    $metier = sanitize_text_field($_POST['metier'] ?? '');
+    $ville  = sanitize_text_field($_POST['ville']  ?? '');
+
+    if (!$name || !$phone || !$metier || !$ville) {
+        wp_send_json_error(['message' => 'Tous les champs sont obligatoires.'], 400);
+    }
+
+    $to      = 'contact@hooklab.eu';
+    $subject = "[HookLab] Nouveau diagnostic – $name ($metier)";
+    $message = "Nom : $name\nTéléphone : $phone\nMétier : $metier\nVille : $ville";
+    $headers = ['Content-Type: text/plain; charset=UTF-8', "From: HookLab <noreply@hooklab.eu>"];
+
+    wp_mail($to, $subject, $message, $headers);
+    wp_send_json_success(['message' => 'Envoyé']);
+}