/* =========================================
   1. VARIABLES GLOBALES (charte graphique)
   ========================================= */
:root {
    /* Les couleurs de DufayElec76 */
    --bleu-marine: #0c303e; 
    --vert-eco: #8bc939;

    /* Couleurs de base pour le texte et le fond */
    --texte-sombre: #2c3e50;
    --fond-clair: #f8f9fa;
    --blanc: #ffffff;
}

/* =========================================
   2. RESET CSS (marges à zéro)
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    /* Permet un défilement fluide quand on clique sur un lien du menu */
    scroll-behavior: smooth; 
}

/* =========================================
   3. STYLES DE BASE DU CORPS
   ========================================= */
body {
    font-family: 'Poppins', 'Helvetica Neue', Arial, sans-serif; 
    background-color: var(--fond-clair);
    color: var(--texte-sombre);
    line-height: 1.6;
}

/* Pour que les futures images ne débordent jamais des écrans de téléphone */
img {
    max-width: 100%;
    height: auto;
}

/* =========================================
   4. BARRE DE NAVIGATION (HEADER)
   ========================================= */
header {
    position: sticky; 
    top: 0;
    background-color: var(--blanc);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); 
    z-index: 1000; 
}

.navbar {
    display: flex;
    justify-content: space-between; 
    align-items: center; 
    padding: 15px 5%; 
    max-width: 1200px;
    margin: 0 auto; 
}

/* --- Le Logo --- */
.logo img {
    height: 60px;
    width: auto;
    display: block;
}

/* --- Les Liens du Menu --- */
.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 30px; 
}

.nav-links a {
    text-decoration: none; 
    color: var(--texte-sombre);
    font-weight: 500;
    transition: color 0.3s ease; 
}

.nav-links a:hover {
    color: var(--vert-eco); 
}

/* --- Le Bouton "Demander un devis" --- */
.nav-links .btn-contact {
    background-color: var(--bleu-marine);
    color: var(--blanc);
    padding: 10px 20px;
    border-radius: 5px; 
    transition: background-color 0.3s ease;
}

.nav-links .btn-contact:hover {
    background-color: var(--vert-eco);
    color: var(--blanc); 
}

/* =========================================
   TÉLÉPHONE DANS LE HEADER
   ========================================= */

.phone-header:hover {
    background-color: var(--vert-eco);
    color: white;
}

@media (max-width: 768px) {
    .phone-header {
        display: none;
    }
}

/* =========================================
   5. MENU MOBILE (RESPONSIVE)
   ========================================= */

.burger-menu {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.burger-menu span {
    width: 25px;
    height: 3px;
    background-color: var(--bleu-marine);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* --- RÈGLES POUR LES ÉCRANS MOBILES --- */
@media (max-width: 768px) {
    .burger-menu {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 70px;
        left: -100%; 
        flex-direction: column;
        background-color: var(--blanc);
        width: 100%;
        text-align: center;
        transition: left 0.3s ease-in-out;
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
    }

    .nav-links li {
        margin: 15px 0;
    }

    .nav-links.active {
        left: 0; 
    }
}

/* =========================================
   6. SECTION HERO (ACCUEIL)
   ========================================= */
.hero {
    background: linear-gradient(rgba(12, 48, 62, 0.8), rgba(12, 48, 62, 0.3)), url('../img/hero-bg-2.jpg') center/cover;
    background-color: var(--bleu-marine); 
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--blanc);
    padding: 0 20px;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

/* --- Le gros bouton d'action --- */
.btn-main {
    display: inline-block;
    background-color: var(--vert-eco);
    color: var(--blanc);
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.btn-main:hover {
    background-color: #6a9c2a;
}

/* --- Responsive pour le Hero --- */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    .hero p {
        font-size: 1rem;
    }
    .hero {
    background: linear-gradient(rgba(12, 48, 62, 0.8), rgba(12, 48, 62, 0.3)), url('../img/hero-bg-optimized.jpg') center/cover;
    background-color: var(--bleu-marine); 
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--blanc);
    padding: 0 20px;
}
}

/* =========================================
   7. SECTION SERVICES
   ========================================= */
.services-section {
    padding: 80px 5%;
    background-color: var(--fond-clair);
    text-align: center;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    color: var(--bleu-marine);
    margin: 0 auto 60px;
    position: relative;
    display: block;
    width: fit-content;
    text-align: center;
}

.section-title::after {
    content: '';
    width: 60px;
    height: 4px;
    background-color: var(--vert-eco);
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* --- La Grille CSS --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); 
    gap: 30px;
}

/* --- Le design des cartes --- */
.service-card {
    background-color: var(--blanc);
    padding: 40px 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.service-card h3 {
    color: var(--bleu-marine);
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-card p {
    font-size: 1rem;
    color: var(--texte-sombre);
    text-align: left;
    line-height: 1.6;
}

/* --- Responsive pour les Services --- */
@media (max-width: 992px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
    .section-title {
        font-size: 2rem;
    }
}

/* =========================================
   SECTION RÉALISATIONS - INSTAGRAM
   ========================================= */
.realisations-section {
    padding: 80px 5%;
    background-color: var(--fond-clair);
    text-align: center;
}

.section-subtitle {
    max-width: 700px;
    margin: 0 auto 50px auto;
    font-size: 1.1rem;
    color: var(--texte-sombre);
}

.instagram-showcase {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 50px 40px;
    border-radius: 16px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.instagram-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.instagram-icon img {
    width: 60px;
    height: 60px;
}

.instagram-showcase p {
    color: var(--texte-sombre);
    font-size: 1.05rem;
    margin-bottom: 30px;
    line-height: 1.7;
}

.btn-instagram {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    color: white;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s;
}

.instagram-icon-btn {
    width: 24px;
    height: 24px;
}

.btn-instagram:hover {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .instagram-showcase {
        padding: 35px 25px;
    }
}

/* =========================================
   8. SECTION CONTACT & FORMULAIRE
   ========================================= */
.contact-section {
    padding: 80px 5%;
    background-color: var(--blanc);
    text-align: center;
}

.contact-subtitle {
    margin-bottom: 40px;
    font-size: 1.1rem;
    color: var(--texte-sombre);
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
}

.contact-form {
    background-color: var(--fond-clair);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: left;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-row .form-group {
    flex: 1;
}

.form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: bold;
    color: var(--bleu-marine);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

/* Le style commun pour tous les champs de saisie */
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    max-height: 400px;
}

/* Effet visuel quand on clique dans un champ */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--vert-eco);
    box-shadow: 0 0 5px rgba(139, 201, 57, 0.3);
}

.btn-submit {
    width: 100%;
    border: none;
    cursor: pointer;
    margin-top: 10px;
}

/* --- Responsive pour le Formulaire --- */
@media (max-width: 768px) {
    .contact-form {
        padding: 20px;
    }
    .form-row {
        flex-direction: column;
        gap: 0;
    }
}

/* Cache l'input natif */
input[type="file"] {
    display: none;
}

.btn-upload {
    display: block; /* block au lieu de inline-block */
    width: 100%; /* prend toute la largeur comme les autres champs */
    background-color: var(--bleu-marine);
    color: white !important; /* force le blanc car le label hérite du style .form-group label */
    padding: 12px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    text-align: center; /* centre le texte */
    transition: background-color 0.3s ease;
    margin-top: 5px;
    box-sizing: border-box;
}

.btn-upload:hover {
    background-color: var(--vert-eco);
}

.upload-info {
    display: block;
    margin-top: 8px;
    font-size: 0.85rem;
    color: #888;
    font-style: italic;
}

/* --- Messages d'alerte du formulaire --- */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* =========================================
   9. GESTION DES ERREURS ET ACCESSIBILITÉ
   ========================================= */

.input-wrapper {
    position: relative;
    display: block;
    width: 100%;
}

.icon-erreur {
    display: none; 
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    pointer-events: none;
}

/* --- DÉCLENCHEMENT DE L'ERREUR --- */

.has-error input {
    border: 2px solid #e74c3c !important;
    padding-right: 40px;
}

.has-error .icon-erreur {
    display: block;
}

/* =========================================
   10. PAGES LÉGALES
   ========================================= */
.legal-section {
    padding: 100px 5% 60px 5%;
    background-color: var(--fond-clair);
    min-height: 80vh;
}

.legal-container {
    max-width: 900px;
    background-color: var(--blanc);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.legal-content h2 {
    color: var(--bleu-marine);
    margin: 30px 0 15px 0;
    font-size: 1.3rem;
}

.legal-content p {
    margin-bottom: 15px;
    color: var(--texte-sombre);
    line-height: 1.7;
}

/* =========================================
   11. PIED DE PAGE (FOOTER)
   ========================================= */
.main-footer {
    background-color: var(--bleu-marine);
    color: var(--blanc);
    padding: 30px 5%;
    font-size: 0.9rem;
    border-top: 3px solid var(--vert-eco);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info span {
    color: var(--vert-eco);
    font-weight: bold;
}

.footer-links {
    display: flex;
    gap: 25px;
}

.footer-links a {
    color: #a0b0b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--vert-eco);
}

/* --- Responsive Footer --- */
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
}

/* =========================================
   BANDEAU SUPERIEUR
   ========================================= */
.top-bar {
    background-color: var(--bleu-marine);
    color: white;
    font-size: 0.9rem;
    padding: 8px 0;
}

.top-bar-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.top-bar-contact {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.top-contact-link {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.3s;
}

.top-contact-link:hover {
    color: var(--vert-eco);
}

/* Téléphone dans la navbar */
.phone-header {
    background-color: var(--vert-eco);
    color: white;
    padding: 10px 18px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.phone-header:hover {
    background-color: #6a9c2a;
    transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 768px) {
    .top-bar p {
        text-align: center;
        width: 100%;
        margin-bottom: 8px;
    }
    .phone-header {
        display: none;
    }
}

/* =========================================
   BOUTON APPEL FLOTTANT (MOBILE)
   ========================================= */
.floating-call-btn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--vert-eco);
    color: white;
    width: 62px;
    height: 62px;
    border-radius: 50%;
    text-decoration: none;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.floating-call-btn:hover {
    background: #6a9c2a;
    transform: scale(1.08);
    box-shadow: 0 8px 25px rgba(139, 201, 57, 0.5);
}

.call-icon svg {
    width: 30px;
    height: 30px;
    margin-top: 5px;
}

/* Responsive */
@media (max-width: 768px) {
    .floating-call-btn {
        display: flex;
    }
}

@media (min-width: 1024px) {
    .floating-call-btn {
        display: none;
    }
}

/* =========================================
   ACCESSIBILITÉ - Focus uniquement au clavier
   ========================================= */

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
.carousel-btn:focus-visible,
.nav-links a:focus-visible {
    outline: 3px solid var(--vert-eco);
    outline-offset: 4px;
}

.btn-main:focus-visible,
.phone-header:focus-visible,
.top-contact-link:focus-visible {
    outline: 3px solid #ffffff;
    outline-offset: 4px;
    background-color: rgba(139, 201, 57, 0.25);
}


/* =========================================
   SECTION À PROPOS
   ========================================= */
.about-section {
    padding: 80px 5%;
    background-color: var(--blanc);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

.about-text p {
    margin-bottom: 18px;
    font-size: 1.05rem;
    line-height: 1.7;
}

.about-text ul {
    margin: 20px 0;
    padding-left: 20px;
}

.about-text li {
    margin-bottom: 8px;
}

.placeholder-photo {
    height: 700px;
    border-radius: 12px;
    overflow: hidden; /* coupe ce qui dépasse */
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.placeholder-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* remplit sans déformer */
    object-position: center;
    display: block;
}

@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .placeholder-photo {
        height: 300px;
    }
}

/* === ICÔNES SVG SERVICES === */
.service-icon svg {
    width: 60px;
    height: 60px;
    color: var(--bleu-marine);
    transition: color 0.3s ease, transform 0.3s ease;
}

.service-card:hover .service-icon svg {
    color: var(--vert-eco);
    transform: scale(1.1);
}