/* ===== Couleurs du site : modifie-les ici ===== */
        :root {
            --principale: #0a5ecb;
            --principale-fonce: #062f6b;
            --principale-clair: #e8f1fd;
            --soleil: #ffc02e;
            --orange: #ff8a00;
            --texte: #1b2430;
            --gris: #5f6b7a;
            --fond: #f3f7fc;
            --ombre: 0 8px 24px rgba(6, 47, 107, .10);
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--texte); background: #fff; line-height: 1.65; -webkit-font-smoothing: antialiased; }
        a { color: var(--principale); }
        img { max-width: 100%; }
        .container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        .centre { text-align: center; }

        /* ===== En-tête : logo à gauche, menu à droite ===== */
        .site-header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .96); backdrop-filter: blur(8px); box-shadow: 0 2px 14px rgba(6, 47, 107, .08); }
        .site-header::after { content: ""; display: block; height: 4px; background: linear-gradient(90deg, var(--principale), var(--soleil), var(--orange)); }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 88px; padding-top: 8px; padding-bottom: 8px; }
        .logo { display: inline-flex; align-items: center; text-decoration: none; }
        .logo img { height: 70px; width: auto; display: block; }
        /* Emplacement affiché tant que le fichier du logo n'est pas déposé dans public/ */
        .logo-vide { display: inline-flex; align-items: center; justify-content: center; width: 150px; height: 60px; border: 2px dashed #b8c6da; border-radius: 10px; color: #8a9bb3; font-size: .85rem; letter-spacing: .18em; }

        /* Menu */
        .menu { display: flex; align-items: center; gap: 30px; }
        .menu a.lien { position: relative; color: var(--texte); text-decoration: none; font-weight: 600; padding: 6px 0; }
        .menu a.lien::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--soleil), var(--orange)); transition: width .25s ease; }
        .menu a.lien:hover { color: var(--principale); }
        .menu a.lien:hover::after { width: 100%; }

        /* Bouton "hamburger" (affiché seulement sur petit écran) */
        .menu-toggle { display: none; }
        .burger { display: none; cursor: pointer; width: 46px; height: 46px; border-radius: 12px; border: 1.5px solid #cfd9e8; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
        .burger span { display: block; width: 22px; height: 3px; border-radius: 3px; background: var(--principale-fonce); transition: transform .25s ease, opacity .2s ease; }
        .menu-toggle:checked + .burger span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
        .menu-toggle:checked + .burger span:nth-child(2) { opacity: 0; }
        .menu-toggle:checked + .burger span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

        /* Les titres de section ne se cachent pas sous l'en-tête fixe quand on clique sur le menu */
        section[id] { scroll-margin-top: 100px; }

        /* ===== Boutons ===== */
        .btn { display: inline-block; padding: 12px 26px; border-radius: 999px; font-weight: 700; text-decoration: none; border: 2px solid transparent; cursor: pointer; font-size: 1rem; line-height: 1.4; font-family: inherit; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
        .btn:hover { transform: translateY(-2px); }
        .btn-accent { background: linear-gradient(135deg, var(--soleil), var(--orange)); color: #1b2430; box-shadow: 0 8px 20px rgba(255, 138, 0, .38); }
        .btn-accent:hover { box-shadow: 0 12px 28px rgba(255, 138, 0, .5); color: #1b2430; }
        .btn-contour { border-color: #fff; color: #fff; background: transparent; }
        .btn-contour:hover { background: #fff; color: var(--principale-fonce); }
        .btn-lg { padding: 16px 38px; font-size: 1.1rem; }
        .btn-sm { padding: 9px 22px; font-size: .95rem; }

        /* ===== Bandeau d'accueil ===== */
        .hero { position: relative; overflow: hidden; color: #fff; text-align: center; padding: 92px 0 128px;
                background: linear-gradient(135deg, var(--principale-fonce) 0%, var(--principale) 62%, #2b86e8 100%); }
        /* Le soleil */
        .hero::before { content: ""; position: absolute; width: 380px; height: 380px; right: -90px; top: -130px; border-radius: 50%;
                        background: radial-gradient(circle, #ffe27a 0%, var(--soleil) 38%, rgba(255, 192, 46, 0) 70%); opacity: .95; }
        .hero::after { content: ""; position: absolute; width: 260px; height: 260px; left: -90px; bottom: -110px; border-radius: 50%;
                       background: radial-gradient(circle, rgba(255, 255, 255, .22), rgba(255, 255, 255, 0) 70%); }
        .hero .container { position: relative; z-index: 1; }
        .hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin: 0 0 18px; line-height: 1.15; font-weight: 800; letter-spacing: -.5px; }
        .hero h1 span { color: var(--soleil); }
        .hero p { font-size: 1.2rem; max-width: 700px; margin: 0 auto 32px; opacity: .96; }
        .pastilles { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
        .pastille { background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .35); padding: 6px 16px; border-radius: 999px; font-size: .95rem; font-weight: 600; }
        /* Courbe qui relie le bandeau à la section suivante */
        .hero-courbe { position: absolute; left: 0; right: 0; bottom: -1px; height: 70px; background: #fff; clip-path: ellipse(58% 100% at 50% 100%); z-index: 1; }

        /* ===== Sections ===== */
        section.bloc { padding: 72px 0; }
        section.bloc.gris { background: var(--fond); }
        .titre-section { text-align: center; margin: 0 0 10px; font-size: clamp(1.6rem, 3.5vw, 2.2rem); font-weight: 800; color: var(--principale-fonce); }
        .titre-section::after { content: ""; display: block; width: 70px; height: 5px; border-radius: 5px; margin: 14px auto 0; background: linear-gradient(90deg, var(--soleil), var(--orange)); }
        .sous-titre { text-align: center; color: var(--gris); max-width: 640px; margin: 18px auto 44px; font-size: 1.05rem; }

        /* Cartes de services */
        .grille { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 26px; }
        .carte { position: relative; overflow: hidden; background: #fff; border: 1px solid #e3ebf6; border-radius: 18px; padding: 34px 26px 28px; box-shadow: var(--ombre); transition: transform .25s ease, box-shadow .25s ease; }
        .carte::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 5px; background: linear-gradient(90deg, var(--soleil), var(--orange)); }
        .carte:hover { transform: translateY(-8px); box-shadow: 0 18px 38px rgba(6, 47, 107, .18); }
        .carte .icone { width: 68px; height: 68px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2rem; margin-bottom: 18px;
                        background: linear-gradient(135deg, #fff1c9, #ffd986); box-shadow: 0 6px 14px rgba(255, 138, 0, .25); }
        .carte h3 { margin: 0 0 10px; font-size: 1.25rem; color: var(--principale-fonce); }
        .carte p { margin: 0 0 16px; color: var(--gris); }
        .carte a.lien-carte { font-weight: 700; text-decoration: none; color: var(--principale); white-space: nowrap; }
        .carte a.lien-carte:hover { text-decoration: underline; }

        /* Comment ça marche */
        .etapes { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 30px; counter-reset: etape; }
        .etape { text-align: center; position: relative; }
        .etape .num { width: 62px; height: 62px; margin: 0 auto 16px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
                      font-size: 1.5rem; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--principale), #2b86e8); box-shadow: 0 8px 18px rgba(10, 94, 203, .35); position: relative; z-index: 1; }
        .etape h3 { margin: 0 0 6px; font-size: 1.1rem; color: var(--principale-fonce); }
        .etape p { margin: 0; color: var(--gris); font-size: .98rem; }
        @media (min-width: 900px) {
            .etape:not(:last-child)::after { content: ""; position: absolute; top: 31px; left: calc(50% + 40px); right: calc(-50% + 40px); border-top: 3px dotted #9db8de; }
        }

        /* Contact */
        .contact-grille { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; }
        .contact-item { text-align: center; background: #fff; border: 1px solid #e3ebf6; border-radius: 16px; padding: 26px 18px; box-shadow: var(--ombre); }
        .contact-item .icone { width: 56px; height: 56px; margin: 0 auto 10px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; background: var(--principale-clair); }
        .contact-item strong { display: block; color: var(--principale-fonce); margin: 4px 0; }
        .contact-item span, .contact-item a { color: var(--gris); text-decoration: none; word-break: break-word; }
        .contact-item a:hover { color: var(--principale); text-decoration: underline; }

        /* Bandeau d'appel à l'action */
        .bandeau-cta { position: relative; overflow: hidden; text-align: center; color: #fff; padding: 64px 0; background: linear-gradient(135deg, var(--principale-fonce), var(--principale)); }
        .bandeau-cta::before { content: ""; position: absolute; width: 300px; height: 300px; left: -80px; top: -120px; border-radius: 50%; background: radial-gradient(circle, rgba(255, 192, 46, .55), rgba(255, 192, 46, 0) 70%); }
        .bandeau-cta .container { position: relative; }
        .bandeau-cta h2 { margin: 0 0 10px; font-size: clamp(1.5rem, 3.5vw, 2.1rem); font-weight: 800; }
        .bandeau-cta p { margin: 0 auto 26px; max-width: 600px; opacity: .95; }

        /* Formulaire (carte) */
        .formulaire { max-width: 660px; margin: 0 auto; background: #fff; border: 1px solid #e3ebf6; border-radius: 20px; padding: 36px 34px; box-shadow: 0 14px 40px rgba(6, 47, 107, .12); }
        .champ { margin-bottom: 20px; }
        .champ label { display: block; font-weight: 700; margin-bottom: 7px; color: var(--principale-fonce); }
        .champ input, .champ select, .champ textarea { width: 100%; padding: 12px 14px; border: 1.5px solid #cfd9e8; border-radius: 12px; font: inherit; background: #fff; transition: border-color .2s, box-shadow .2s; }
        .champ input:focus, .champ select:focus, .champ textarea:focus { outline: none; border-color: var(--principale); box-shadow: 0 0 0 4px rgba(10, 94, 203, .15); }
        .champ .aide { color: var(--gris); font-size: .9rem; margin-top: 5px; }
        .champ .erreur { color: #b91c1c; font-size: .9rem; margin-top: 5px; }
        .champ.invalide input, .champ.invalide select, .champ.invalide textarea { border-color: #dc2626; }
        .ligne-champs { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0 18px; }
        .piege { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

        .alerte { padding: 14px 18px; border-radius: 12px; margin: 24px 0 0; font-weight: 500; }
        .alerte-ok { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
        .alerte-erreur { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

        /* ===== Pied de page ===== */
        footer.pied { background: #04204a; color: #b9c7de; padding: 28px 0; text-align: center; font-size: .95rem; }
        footer.pied a { color: #8fb7ee; text-decoration: none; margin-left: 10px; font-size: .85rem; }
        footer.pied a:hover { color: #fff; text-decoration: underline; }

        /* ===== Apparition douce du bandeau ===== */
        @keyframes monter { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
        .hero .container > * { animation: monter .8s ease both; }
        .hero .container > *:nth-child(2) { animation-delay: .12s; }
        .hero .container > *:nth-child(3) { animation-delay: .24s; }
        .hero .container > *:nth-child(4) { animation-delay: .36s; }
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
        }

        @media (max-width: 860px) {
            .burger { display: flex; }
            .menu { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 4px;
                    padding: 14px 20px 22px; background: #fff; box-shadow: 0 16px 28px rgba(6, 47, 107, .14); }
            .menu a.lien { padding: 13px 4px; border-bottom: 1px solid #eef2f8; }
            .menu a.lien::after { display: none; }
            .menu .btn { text-align: center; margin-top: 12px; }
            .menu-toggle:checked ~ .menu { display: flex; }
        }

        @media (max-width: 600px) {
            .site-header .container { min-height: 76px; }
            .logo img { height: 56px; }
            .hero { padding: 64px 0 100px; }
            .hero::before { width: 260px; height: 260px; right: -90px; top: -100px; }
            section.bloc { padding: 48px 0; }
            .formulaire { padding: 26px 20px; border-radius: 16px; }
        }