/* ================================================================
   FEUILLE DE STYLES PRINCIPALE - G.D.F Pro-Cleaners
   ================================================================
   
   Table des matières:
   1. Variables CSS et configurations globales
   2. Réinitialisations et styles de base
   3. Utilitaires et composants réutilisables
   4. Navigation (navbar)
   5. Section Hero (bannière d'accueil)
   6. Section À propos
   7. Section Services
   8. Section Processus
   9. Section Contact
   10. Footer (pied de page)
   11. Bouton retour en haut
   12. Responsive design (média queries)
   
   ================================================================ */


/* ================================================================
   1. VARIABLES CSS - Définition des couleurs et valeurs réutilisables
   ================================================================ */
:root {
    /* Palette de couleurs principale */
    --primary-color: #2563eb;
    /* Bleu principal pour les CTA */
    --primary-dark: #1e40af;
    /* Bleu foncé pour les hovers */
    --primary-light: #3b82f6;
    /* Bleu clair pour les accents */

    --secondary-color: #10b981;
    /* Vert pour les succès et écologie */
    --secondary-dark: #059669;
    /* Vert foncé */

    --accent-color: #f59e0b;
    /* Orange pour les highlights */

    /* Couleurs de texte */
    --text-primary: #1f2937;
    /* Texte principal sombre */
    --text-secondary: #6b7280;
    /* Texte secondaire gris */
    --text-light: #9ca3af;
    /* Texte très clair */
    --text-white: #ffffff;
    /* Texte blanc */

    /* Couleurs de fond */
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    /* Gris très clair */
    --bg-gray: #f3f4f6;
    /* Gris clair */
    --bg-dark: #111827;
    /* Fond sombre */

    /* Bordures et ombres */
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Espacements */
    --spacing-xs: 0.5rem;
    /* 8px */
    --spacing-sm: 1rem;
    /* 16px */
    --spacing-md: 1.5rem;
    /* 24px */
    --spacing-lg: 2rem;
    /* 32px */
    --spacing-xl: 3rem;
    /* 48px */
    --spacing-2xl: 4rem;
    /* 64px */

    /* Tailles de police */
    --text-xs: 0.75rem;
    /* 12px */
    --text-sm: 0.875rem;
    /* 14px */
    --text-base: 1rem;
    /* 16px */
    --text-lg: 1.125rem;
    /* 18px */
    --text-xl: 1.25rem;
    /* 20px */
    --text-2xl: 1.5rem;
    /* 24px */
    --text-3xl: 1.875rem;
    /* 30px */
    --text-4xl: 2.25rem;
    /* 36px */
    --text-5xl: 3rem;
    /* 48px */

    /* Bordures arrondies */
    --radius-sm: 0.25rem;
    /* 4px */
    --radius-md: 0.5rem;
    /* 8px */
    --radius-lg: 0.75rem;
    /* 12px */
    --radius-xl: 1rem;
    /* 16px */

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Container max width */
    --container-width: 1200px;
}


/* ================================================================
   2. RÉINITIALISATIONS ET STYLES DE BASE
   ================================================================ */

/* Reset des marges et paddings par défaut du navigateur */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Désactivation du smooth scroll pour les utilisateurs qui préfèrent réduire les mouvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Configuration de base du HTML et body */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

/* Styles des liens */
a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-color);
}

/* Styles des images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Styles des listes */
ul,
ol {
    list-style: none;
}

/* Styles des boutons */
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}


/* ================================================================
   3. UTILITAIRES ET COMPOSANTS RÉUTILISABLES
   ================================================================ */

/* Container principal - limite la largeur et centre le contenu */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* En-têtes de sections */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-label {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-transform: uppercase;
}

.section-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Boutons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: var(--text-base);
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-outline:hover {
    background-color: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: var(--text-lg);
}

.btn-block {
    width: 100%;
    display: block;
}


/* ================================================================
   4. NAVIGATION (NAVBAR)
   ================================================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

/* État scrollé de la navbar */
.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background-color: rgba(255, 255, 255, 0.98);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

/* Logo */
.nav-brand {
    display: flex;
    align-items: center;
}

.nav-brand a {
    text-decoration: none;
    display: flex;
    align-items: center;
}

/* Image du logo */
.logo-image {
    height: 60px;
    width: auto;
    max-width: 200px;
    display: block;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.logo-image:hover {
    transform: scale(1.05);
}

/* Logo dans la section About */
.about-logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    border-radius: 1.5rem;
    box-shadow: var(--shadow-md);
}

.about-logo {
    max-width: 100%;
    height: auto;
    max-height: 550px;
    object-fit: contain;
    border-radius: 1rem;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.about-logo:hover {
    transform: scale(1.02);
}

/* Menu de navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--text-primary);
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-fast);
}

/* Effet de soulignement animé */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--primary-color);
}

/* Bouton CTA dans la navbar */
.nav-cta {
    padding: 0.5rem 1.25rem;
    font-size: var(--text-sm);
}

/* Sélecteur de langue */
.language-switcher {
    display: flex;
    gap: 0.5rem;
    background-color: var(--bg-light);
    padding: 0.25rem;
    border-radius: var(--radius-md);
}

.lang-btn {
    padding: 0.4rem 0.8rem;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
    background-color: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    color: var(--primary-color);
    background-color: var(--bg-white);
}

.lang-btn.active {
    color: var(--text-white);
    background-color: var(--primary-color);
}

/* Bouton hamburger (mobile) */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 30px;
    height: 30px;
    cursor: pointer;
}

.hamburger {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: all var(--transition-normal);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-normal);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

/* Animation du hamburger quand le menu est ouvert */
.nav-toggle.active .hamburger {
    background-color: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}


/* ================================================================
   5. SECTION HERO (BANNIÈRE D'ACCUEIL)
   ================================================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-image:
        linear-gradient(135deg, rgba(37, 99, 235, 0.9) 0%, rgba(79, 70, 229, 0.9) 100%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,101.3C1248,85,1344,75,1392,69.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: center;
    padding: var(--spacing-2xl) 0;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.1);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    animation: fadeInUp 0.8s ease-out;
    text-transform: uppercase;
}

.hero-title .highlight {
    display: block;
    background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    margin-top: var(--spacing-sm);
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

/* Statistiques dans le hero */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    margin-top: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    display: block;
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.8);
}

/* Indicateur de scroll */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    display: block;
    width: 30px;
    height: 30px;
    border-left: 2px solid var(--text-white);
    border-bottom: 2px solid var(--text-white);
    transform: rotate(-45deg);
}

/* Animation de bounce pour la flèche */
@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* Animation fade in up */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* ================================================================
   6. SECTION À PROPOS
   ================================================================ */

.about {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-intro {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.feature-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: var(--text-white);
    border-radius: 50%;
    font-size: var(--text-lg);
    font-weight: 700;
}

.feature-content h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-content p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Placeholder pour l'image */
.about-image {
    position: relative;
}

.image-placeholder {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.placeholder-content {
    text-align: center;
    color: var(--text-white);
    font-size: var(--text-lg);
    padding: var(--spacing-lg);
}


/* ================================================================
   7. SECTION SERVICES
   ================================================================ */

.services {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    position: relative;
    background-color: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

/* Carte mise en avant */
.service-card.featured {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(79, 70, 229, 0.05) 100%);
}

.service-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background-color: var(--accent-color);
    color: var(--text-white);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.service-icon {
    width: 48px;
    height: 48px;
    background-color: var(--primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    color: var(--text-white);
}

.service-icon svg {
    width: 26px;
    height: 26px;
}

.service-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.service-description {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.service-list {
    margin-bottom: var(--spacing-md);
}

.service-list li {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    padding: 0.35rem 0;
    padding-left: var(--spacing-md);
    position: relative;
}

/* Icône de check pour chaque élément de liste */
.service-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 700;
}

.service-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    color: var(--primary-color);
    transition: all var(--transition-fast);
    margin-top: auto;
    padding-top: var(--spacing-md);
}

.service-link:hover {
    gap: 0.5rem;
}


/* ================================================================
   8. SECTION PROCESSUS
   ================================================================ */

.process {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-white);
}

.process-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.step-item {
    display: flex;
    gap: var(--spacing-lg);
    position: relative;
}

/* Ligne verticale connectant les étapes */
.step-item:not(:last-child)::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 70px;
    width: 2px;
    height: calc(100% + var(--spacing-xl));
    background: linear-gradient(to bottom, var(--primary-color), var(--primary-light));
    opacity: 0.3;
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.step-content {
    flex: 1;
    padding-top: 0.5rem;
}

.step-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.step-description {
    font-size: var(--text-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.step-meta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.meta-item {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    background-color: var(--bg-light);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
}


/* ================================================================
   9. SECTION CONTACT
   ================================================================ */

.contact {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
}

/* Formulaire de contact */
.contact-form-wrapper {
    background-color: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--text-base);
    font-family: inherit;
    color: var(--text-primary);
    background-color: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* Message de confirmation */
.form-message {
    display: none;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    text-align: center;
}

.form-message.success {
    display: block;
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.form-message.error {
    display: block;
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* Cartes d'informations de contact */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-card {
    background-color: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.info-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    color: var(--primary-color);
}

.info-icon svg {
    width: 100%;
    height: 100%;
}

.info-card h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.info-card p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.info-card a {
    color: var(--primary-color);
    font-weight: 500;
}

.info-card a:hover {
    text-decoration: underline;
}

.info-meta {
    font-size: var(--text-sm);
    color: var(--text-light);
}


/* ================================================================
   10. FOOTER (PIED DE PAGE)
   ================================================================ */

.footer {
    background-color: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
}

.footer-description {
    font-size: var(--text-sm);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.footer-heading {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: var(--spacing-xs);
}

/* Réseaux sociaux */
.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--text-white);
    transition: all var(--transition-normal);
}

.social-link:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* Contact dans le footer */
.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-contact li {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    font-size: var(--text-sm);
}

.footer-contact svg {
    width: 18px;
    height: 18px;
    color: var(--primary-light);
    flex-shrink: 0;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact a:hover {
    color: var(--primary-light);
}

/* Bas du footer */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.copyright {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.legal-link {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
}

.legal-link:hover {
    color: var(--primary-light);
}

.separator {
    color: rgba(255, 255, 255, 0.3);
}


/* ================================================================
   11. BOUTON RETOUR EN HAUT
   ================================================================ */

.scroll-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
    cursor: pointer;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
}

.scroll-to-top svg {
    width: 24px;
    height: 24px;
}


/* ================================================================
   12. RESPONSIVE DESIGN (MÉDIA QUERIES)
   ================================================================ */

/* Tablettes (max-width: 1024px) */
@media (max-width: 1024px) {
    .section-title {
        font-size: var(--text-3xl);
    }

    .hero-title {
        font-size: var(--text-4xl);
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }
}

/* Tablettes et mobiles (max-width: 768px) */
@media (max-width: 768px) {

    /* Navigation mobile */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links {
        flex-direction: column;
        gap: var(--spacing-md);
        width: 100%;
    }

    .language-switcher {
        width: 100%;
        justify-content: center;
    }

    /* Logo responsive */
    .logo-image {
        height: 50px;
        max-width: 150px;
    }

    /* Logo About responsive */
    .about-logo {
        max-height: 300px;
    }

    .about-logo-container {
        padding: 2rem;
    }

    .nav-link {
        width: 100%;
        padding: var(--spacing-sm) 0;
    }

    .nav-cta {
        width: 100%;
    }

    /* Hero mobile */
    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero-subtitle {
        font-size: var(--text-lg);
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-stats {
        gap: var(--spacing-md);
    }

    /* Services mobile */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* Contact mobile */
    .contact-form {
        grid-template-columns: 1fr;
    }

    /* Footer mobile */
    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Petits mobiles (max-width: 480px) */
@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }

    .hero-title {
        font-size: var(--text-2xl);
    }

    .section-title {
        font-size: var(--text-2xl);
    }

    .stat-number {
        font-size: var(--text-2xl);
    }

    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: var(--text-base);
    }

    .image-placeholder {
        height: 300px;
    }
}