/* --- Fichier : style.css (Version Complète et Finale Corrigée) --- */

/* --- Variables de couleur pour les thèmes --- */
:root {
    --primary-blue: #0066cc;
    --dark-blue: #004080;
    --accent-orange: #ff9900;
    --light-gray: #f5f5f5;
    --body-bg: #f8f9fa;
    --text-dark: #333;
    --footer-bg: #0066cc;
    --footer-text-color: #ffffff;
    --footer-link-color: #eef7ff;
    --footer-link-hover-color: var(--accent-orange);
    --footer-heading-color: var(--accent-orange);
    --form-bg: var(--light-gray);
    --form-input-bg: #fff;
    --form-border-color: #ccc;
    --card-shadow: 0 5px 15px rgba(0,0,0,0.1);
    --card-hover-shadow: 0 10px 25px rgba(0,0,0,0.2);
    --image-shadow: 0 8px 20px rgba(0,0,0,0.2);
    --transition-speed: 0.3s;
}

/* --- Définition des couleurs pour le mode sombre --- */
html[data-theme="dark"] {
    --primary-blue: #0d76d9;
    --dark-blue: #005bb5;
    --accent-orange: #ff9900;
    --light-gray: #2a2a2e;
    --body-bg: #1e1e21;
    --text-dark: #e1e1e1;
    --footer-bg: #111;
    --footer-text-color: #ccc;
    --footer-link-color: #eef7ff;
    --form-bg: #2a2a2e;
    --form-input-bg: #333;
    --form-border-color: #555;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
    --card-hover-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
    --image-shadow: 0 8px 20px rgba(0,0,0,0.5);
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji", sans-serif;
    font-size: 17px; /* Augmentation de la taille de base du texte */
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--body-bg);
    opacity: 0;
    animation: fadeInPage 0.7s ease-out forwards;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

body.nav-open {
    overflow: hidden;
}

@keyframes fadeInPage {
    to {
        opacity: 1;
    }
}

/* Header */
.header {
    background: var(--primary-blue);
    padding: 0.8rem 3%;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: nowrap; 
    transition: all 0.3s ease-in-out;
}

.header.header-scrolled {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    background: rgba(0, 102, 204, 0.95);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.header.header-scrolled .site-logo { max-width: 150px; }
html[data-theme="dark"] .header.header-scrolled { background: rgba(19, 21, 23, 0.85); }

.logo-nav-container { display: flex; align-items: center; }
.site-logo { max-width: 180px; height: auto; display: block; transition: all 0.3s ease-in-out; margin-right: 1.5rem; }

nav#main-nav {
    display: flex;
}

nav ul { list-style: none; }
.nav-list { display: flex; gap: 1.2rem; align-items: center; }

.nav-link {
    color: white;
    text-decoration: none;
    padding: 0.4rem 0.2rem;
    transition: color 0.3s ease; 
    position: relative;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link::after { 
    content: '';
    position: absolute;
    bottom: -2px; /* Positionnement de la ligne */
    width: 0;
    height: 2px;
    display: block;
    right: 0; 
    background: var(--accent-orange);
    transition: width 0.3s ease;
    -webkit-transition: width 0.3s ease;
}
html[dir="rtl"] .nav-link::after { right: auto; left: 0; }
.nav-link:not(#languageDropdownTrigger):hover::after { width: 100%; left: 0; right: auto; }
html[dir="rtl"] .nav-link:not(#languageDropdownTrigger):hover::after { left: auto; right: 0; }
.nav-link:hover, .nav-link:focus { opacity: 0.8; }


/* ===== CORRECTION FINALE ET DÉFINITIVE DES LIENS ACTIFS ===== */

/* 1. Style de base pour les liens actifs (Desktop) */
.nav-list > li > .nav-link.active-page { 
    font-weight: 600; 
    color: var(--accent-orange); 
}
.nav-list > li > .nav-link.active-page::after { 
    width: 100%;
}
.nav-list > li > .nav-link.active-page:hover { 
    color: var(--accent-orange); 
    opacity: 0.9; 
}

/* 2. Affichage des icônes uniquement sur mobile */
@media (max-width: 992px) {
    .nav-link i {
        display: inline-block;
        width: 20px;
        text-align: center;
        font-size: 1em;
    }
}

/* 3. Style spécifique pour les liens actifs sur mobile (Écrase les styles desktop) */
@media (max-width: 992px) {
    .nav-list .nav-link.active-page {
        background-color: rgba(0, 0, 0, 0.15);
        border-left: 4px solid var(--accent-orange);
        padding-left: calc(0.8rem - 4px);
        color: white; /* Le texte du lien redevient blanc */
    }
    .nav-list .nav-link.active-page span {
        color: white; /* Le texte à l'intérieur du span est blanc */
    }
    .nav-list .nav-link.active-page i {
        color: var(--accent-orange); /* L'icône prend la couleur orange */
    }
    .nav-list .nav-link.active-page::after {
        display: none; /* On cache le soulignage sur mobile */
    }
    html[dir="rtl"] .nav-list .nav-link.active-page {
        border-left: none;
        border-right: 4px solid var(--accent-orange);
        padding-left: 0.8rem;
        padding-right: calc(0.8rem - 4px);
    }
}
/* ===== FIN DE LA CORRECTION ===== */


#languageDropdownTrigger.active-page::after, #languageDropdownTrigger:hover::after { width: 0 !important; }

/* Masquer les icônes sur Desktop */
.nav-link i {
    display: none;
}

.dropdown { position: relative; }

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--dark-blue);
    min-width: 220px; 
    border-radius: 0 0 5px 5px;
    padding: 0.5rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    z-index: 1001;
    list-style-type: none;
    transition: background-color var(--transition-speed) ease;
}

html[data-theme="dark"] .dropdown-menu {
    background-color: var(--body-bg);
    border: 1px solid var(--form-border-color);
}
html[data-theme="dark"] .dropdown-menu a:hover {
    background: var(--dark-blue);
}


.dropdown:hover > .dropdown-menu { display: block; }
.dropdown-menu li { margin: 0; }
.dropdown-menu a {
    color: white;
    padding: 0.7rem 1rem;
    display: block;
    text-decoration: none;
    transition: background 0.3s;
    white-space: nowrap;
    font-size: 0.85rem;
}
.dropdown-menu a:hover { background: var(--primary-blue); }

@media (min-width: 993px) { 
    .dropdown-menu .dropdown .dropdown-menu { left: 100%; top: 0; margin-top: -1px; }
    html[dir="rtl"] .dropdown-menu .dropdown .dropdown-menu { left: auto; right: 100%; }
}

.search-lang-mobile-wrapper { 
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}
.search-container { display: flex; align-items: center; justify-content: center; }

#openSearchModalButton {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.6rem;
    font-size: 1.2rem;
    border-radius: 50%;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}
#openSearchModalButton:hover { background-color: rgba(255, 255, 255, 0.2); }

.language-selector.dropdown { position: relative; margin-left: 1rem; flex-shrink: 0; }
html[dir="rtl"] .language-selector.dropdown { margin-left: 0; margin-right: 1rem; }
.language-dropdown-trigger {
    color: white;
    text-decoration: none;
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    border: 1px solid transparent;
    border-radius: 4px;
    transition: all 0.3s ease;
    line-height: 1.2;
}
.language-dropdown-trigger:hover, .language-dropdown-trigger:focus { opacity: 0.8; }
.language-dropdown-trigger .dropdown-arrow { font-size: 0.7em; margin-left: 0.3em; display: inline-block; }
html[dir="rtl"] .language-dropdown-trigger .dropdown-arrow { margin-left: 0; margin-right: 0.3em; }

.language-options-menu { min-width: 130px; left: auto; right: 0; margin-top: 0; }
html[dir="rtl"] .language-options-menu { left: 0; right: auto; }
.language-options-menu .lang-link { font-size: 0.85rem; }
.language-options-menu .lang-link.active { background-color: var(--primary-blue); font-weight: 600; color: white !important; }
.language-options-menu .lang-link.active:hover { background-color: var(--primary-blue); }
.language-selector.dropdown.active > #languageDropdownTrigger { background-color: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.3); }

.theme-switcher { margin-left: 1rem; }
html[dir="rtl"] .theme-switcher { margin-left: 0; margin-right: 1rem; }
#theme-toggle-button {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.7);
    color: white;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: background-color 0.3s, transform 0.3s;
}
#theme-toggle-button:hover { background-color: rgba(255, 255, 255, 0.2); transform: scale(1.1); }

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-close {
    display: none;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.overlay.is-open {
    opacity: 1;
    visibility: visible;
}


@media (max-width: 992px) {
    .header {
        flex-wrap: wrap;
    }
    
    .logo-nav-container {
        flex-grow: 1; 
    }

    nav#main-nav {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background-color: var(--primary-blue);
        z-index: 1002;
        padding: 4rem 1rem 1rem;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
        overflow-y: auto;
    }
    html[data-theme="dark"] nav#main-nav {
        background-color: #1e1e21;
    }

    html[dir="rtl"] nav#main-nav {
        right: auto;
        left: 0;
        transform: translateX(-100%);
    }

    nav#main-nav.is-open {
        display: block; 
        transform: translateX(0);
    }

    .search-lang-mobile-wrapper {
        margin-left: 0; 
    }
    
    .mobile-menu-toggle {
        display: block;
        margin-left: 0.5rem; 
    }
    html[dir="rtl"] .mobile-menu-toggle {
        margin-left: 0;
        margin-right: 0.5rem;
    }


    .mobile-menu-close {
        display: block;
        position: absolute;
        top: 1rem;
        right: 1.5rem;
        background: none;
        border: none;
        color: white;
        font-size: 2rem;
        font-weight: bold;
        cursor: pointer;
    }
     html[dir="rtl"] .mobile-menu-close {
        right: auto;
        left: 1.5rem;
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch; 
        gap: 0;
    }
    .nav-list li {
         width: 100%;
         text-align: left;
    }
     html[dir="rtl"] .nav-list li {
         text-align: right;
    }

    .nav-link {
        display: flex;
        align-items: center;
        gap: 0.8rem;
        padding: 0.8rem;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        font-size: 1.1rem;
        white-space: normal; 
        word-wrap: break-word; 
    }
    
    .nav-list > li.dropdown.active > .nav-link {
        border-bottom-color: transparent;
    }
    
    .nav-list > li:last-of-type > .nav-link:not(:only-child) {
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .nav-list > li:last-child > .nav-link,
    .nav-list > li.dropdown:last-of-type.active > .nav-link {
        border-bottom: none;
    }

    .dropdown-menu {
        position: static;
        display: none;
        width: 100%;
        border-radius: 0;
        box-shadow: none;
        padding: 0;
        padding-left: 1rem;
        border: none;
        background-color: var(--dark-blue); 
    }

    html[data-theme="dark"] .dropdown-menu {
        background-color: #252528;
        border: none;
        box-shadow: none;
    }
    html[data-theme="dark"] .dropdown-menu a {
        border-bottom-color: rgba(255,255,255,0.08);
    }

    html[dir="rtl"] .dropdown-menu {
        padding-left: 0;
        padding-right: 1rem;
    }

    .dropdown.active > .dropdown-menu { 
        display: block; 
        overflow: hidden;
        animation: fadeInSubMenu 0.4s ease-out forwards;
    }

    @keyframes fadeInSubMenu {
        from {
            opacity: 0;
            transform: translateY(-10px);
            max-height: 0;
        }
        to {
            opacity: 1;
            transform: translateY(0);
            max-height: 500px;
        }
    }

    .dropdown-menu a {
        padding: 0.8rem 1rem;
        background: transparent;
        border-bottom: 1px solid rgba(255,255,255,0.05);
        font-size: 0.9rem;
        white-space: normal;
        word-wrap: break-word;
    }
    .dropdown-menu li:last-child a { border-bottom: none; }
}


/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 102, 204, 0.9), rgba(0, 64, 128, 0.9)), url('../image/banner.jpg') center/cover;
    background-color: var(--dark-blue);
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    padding: 2rem;
}
html[data-theme="dark"] .hero {
    background-image: linear-gradient(rgba(19, 21, 23, 0.8), rgba(19, 21, 23, 0.9)), url('../image/banner.jpg');
}
.hero-content { max-width: 800px; padding: 0 1rem; }
.hero-title { font-size: 2.8rem; margin-bottom: 1.5rem; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
.hero-subtitle { font-size: 1.3rem; margin-bottom: 2rem; }
.cta-container { margin-top: 2rem; display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; }

.cta-button { 
    padding: 1.1rem 2.2rem; 
    border: none; 
    border-radius: 5px; 
    font-size: 1.1rem; 
    cursor: pointer; 
    background: var(--accent-orange); 
    color: white; 
    font-weight: 600; 
    text-transform: uppercase; 
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}
.cta-button.secondary { background: transparent; border: 2px solid white; color: white; }

.cta-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.2);
    opacity: 1;
}
.cta-button:not(.secondary):hover {
    background-color: var(--accent-orange);
    box-shadow: 0 0 20px rgba(255, 153, 0, 0.6), 0 8px 15px rgba(0,0,0,0.2);
}
.cta-button.secondary:hover { background: rgba(255,255,255,0.1); }


@media (max-width: 768px) {
    .hero { min-height: 60vh; padding-top: 3rem; padding-bottom: 3rem; }
    .hero-title { font-size: 2.2rem; }
    .hero-subtitle { font-size: 1.1rem; }
    .cta-container { flex-direction: column; gap: 1rem; }
    .cta-button { width: 80%; margin: 0 auto; text-align: center; padding: 1rem 1.5rem; font-size: 1rem; }
}

/* General Section Styling */
.section { 
    padding: 5rem 2rem; 
    transition: background-color var(--transition-speed) ease;
}
.section.bg-white { 
    background-color: #fff; 
}
html[data-theme="dark"] .section.bg-white {
    background-color: var(--light-gray);
}

.section-container { max-width: 1200px; margin: 0 auto; }
.section-title { text-align: center; margin-bottom: 3.5rem; font-size: 2.3rem; position: relative; padding-bottom: 1rem; }
.section-title::after { content: ''; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%); height: 4px; width: 80px; background-color: var(--accent-orange); border-radius: 2px; }

.section-title {
    color: var(--primary-blue);
    background: linear-gradient(45deg, var(--primary-blue), var(--dark-blue));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

html[data-theme="dark"] .section-title {
    background: none;
    -webkit-background-clip: initial;
    background-clip: initial;
    -webkit-text-fill-color: initial;
    color: var(--primary-blue);
}

@media (max-width: 768px) {
    .section { padding: 3.5rem 1rem; }
    .section-title { font-size: 1.8rem; margin-bottom: 2.5rem; }
}

/* About Section (Homepage) */
.about-section .section-container { background: var(--light-gray); padding: 3rem; border-radius: 10px; transition: background-color var(--transition-speed) ease;}
.about-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 4rem; align-items: center; }
.about-text h2 { color: var(--dark-blue); margin-bottom: 1rem; font-size: 1.8rem; }
.about-text p { margin-bottom: 1.5rem; line-height: 1.7; }
.about-list { list-style: none; margin-top: 1.5rem; padding-left: 0; }
.about-list li { margin-bottom: 1.2em; padding-left: 2rem; position: relative; font-size: 1.1rem; }
.about-list li::before { content: "✔"; position: absolute; left: 0; top: 0; color: var(--accent-orange); font-weight: bold; }
.lab-image { width: 100%; border-radius: 10px; box-shadow: var(--image-shadow); }
@media (max-width: 992px) {
    .about-grid { grid-template-columns: 1fr; gap: 3rem; }
    .about-image { order: -1; }
    .about-section .section-container { padding: 2rem; }
}

/* Services Section (Homepage) */
.services-section { background: #eef7ff; }
html[data-theme="dark"] .services-section { background: var(--body-bg); }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2.5rem; }

.service-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    border: 2px solid transparent;
    transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease, background-color var(--transition-speed) ease;
}
html[data-theme="dark"] .service-card {
    background: var(--light-gray);
}


.service-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--card-hover-shadow);
    border-color: var(--accent-orange);
}

.service-card-image, 
.service-card-video { 
    width: 100%;
    aspect-ratio: 16 / 9; 
    object-fit: cover;    
    object-position: center;
    border-radius: 8px; 
    margin-bottom: 1.5rem;
    background-color: #f0f0f0;
    transition: transform 0.4s ease;
}
html[data-theme="dark"] .service-card-image,
html[data-theme="dark"] .service-card-video {
    background-color: #444;
}

.video-in-card-container {
    width: 100%;
    border-radius: 8px; 
    overflow: hidden;   
    margin-bottom: 1.5rem;
    background-color: #f0f0f0; 
    aspect-ratio: 16 / 9;
    transition: transform 0.4s ease;
}

.service-card:hover .service-card-image,
.service-card:hover .video-in-card-container {
    transform: scale(1.05);
}

.video-in-card-container .service-card-video {
    display: block; 
    width: 100%;
    height: 100%; 
    object-fit: cover;
    margin-bottom: 0; 
    border-radius: 0; 
}


.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: var(--dark-blue);
    flex-grow: 0;
}
html[data-theme="dark"] .service-card h3 {
    color: var(--primary-blue);
}

.service-card p {
    font-size: 1rem;
    color: #555;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}
html[data-theme="dark"] .service-card p {
    color: #ccc;
}


.service-card-link {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    background-color: var(--accent-orange);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s ease;
    font-size: 0.9rem;
    margin-top: auto;
}

.service-card-link:hover {
    background-color: var(--dark-blue);
}

/* Etudes Preview Section (Homepage) */
.etudes-preview-section { background: var(--light-gray); }
.etudes-preview-content { text-align: center; }
.placeholder-cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.placeholder-card { background: white; padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); text-align: center; border: 1px dashed #ccc; color: #777; font-style: italic; }


/* Generic Detail Sections (for etudes.html, analyse-*.html, formation.html) */
.etudes-detail-section, 
.analyse-air-detail-section, 
.analyse-eaux-detail-section, 
.analyse-sol-detail-section, 
#analyse-bacterienne-page-content,
#analyse-physicochimique-page-content,
#analyse-agroalimentaire-page-content,
#analyse-dechets-solides-page-content,
#analyse-bruit-eclairage-page-content
{
    background: #fff;
    padding-top: 4rem;
}
html[data-theme="dark"] .etudes-detail-section,
html[data-theme="dark"] .analyse-air-detail-section,
html[data-theme="dark"] .analyse-eaux-detail-section,
html[data-theme="dark"] .analyse-sol-detail-section,
html[data-theme="dark"] #analyse-bacterienne-page-content,
html[data-theme="dark"] #analyse-physicochimique-page-content,
html[data-theme="dark"] #analyse-agroalimentaire-page-content,
html[data-theme="dark"] #analyse-dechets-solides-page-content,
html[data-theme="dark"] #analyse-bruit-eclairage-page-content {
    background: var(--body-bg);
}


/* Styling for blocks within detail pages */
.etude-detail-block {
    background: var(--light-gray);
    padding: 2.5rem;
    border-radius: 10px;
    margin-bottom: 3rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: background-color var(--transition-speed) ease;
}
.etude-detail-block h3 {
    color: var(--dark-blue);
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
    padding-bottom: 0.5rem;
}
html[data-theme="dark"] .etude-detail-block h3 {
    color: var(--primary-blue);
}

.etude-detail-block h3::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    height: 3px;
    width: 60px;
    background-color: var(--accent-orange);
    border-radius: 1.5px;
}
.etude-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center; 
}
.etude-detail-block.reverse-layout .etude-detail-content { grid-template-areas: "image text"; } 
.etude-detail-block.reverse-layout .etude-text { grid-area: text; }
.etude-detail-block.reverse-layout .etude-media-wrapper, 
.etude-detail-block.reverse-layout .etude-image-wrapper { grid-area: image; }

.etude-text p { margin-bottom: 1.5rem; line-height: 1.7; }
.etude-text ul { list-style: disc; margin-left: 1.5rem; margin-bottom: 1.5rem; }
.etude-text ul li { margin-bottom: 0.8em; }

.etude-image-wrapper, 
.etude-media-wrapper { 
    text-align: center; 
    width: 100%; 
}

.etude-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--image-shadow);
    transition: box-shadow var(--transition-speed) ease;
}

.content-image-ratio {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    object-position: center;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    background-color: #f8f9fa;
    box-shadow: var(--image-shadow);
    transition: box-shadow var(--transition-speed) ease, background-color var(--transition-speed) ease;
}
html[data-theme="dark"] .content-image-ratio {
    background-color: #444;
}


@media (max-width: 992px) {
    .etude-detail-content { grid-template-columns: 1fr; gap: 2rem; }
    .etude-detail-block.reverse-layout .etude-detail-content { grid-template-areas: unset; }
    .etude-detail-block.reverse-layout .etude-text { grid-area: unset; }
    .etude-detail-block.reverse-layout .etude-media-wrapper,
    .etude-detail-block.reverse-layout .etude-image-wrapper { 
        grid-area: unset; 
    }
    .etude-detail-block:not(.reverse-layout) .etude-media-wrapper,
    .etude-detail-block:not(.reverse-layout) .etude-image-wrapper {
        order: -1; 
    }
}


/* Styles pour le conteneur média (vidéo + image) */
.etude-media-wrapper {
    display: flex;
    flex-direction: row; 
    gap: 1.5rem; 
    align-items: flex-start; 
}

.video-container {
    flex: 1 1 50%; 
    max-width: 50%; 
}

.video-container video {
    width: 100%;
    height: auto;
    border-radius: 8px; 
    box-shadow: 0 5px 15px rgba(0,0,0,0.1); 
    background-color: #f0f0f0; 
}

.image-container-beside-video {
    flex: 1 1 50%; 
    max-width: 50%;
}

.image-container-beside-video .etude-image {
    width: 100%;
    height: auto;
}

@media (max-width: 768px) { 
    .etude-media-wrapper {
        flex-direction: column; 
    }
    .video-container, .image-container-beside-video {
        max-width: 100%; 
        width: 100%;
    }
    .video-container {
        margin-bottom: 1.5rem; 
    }
}


/* Training Page Specific Form Container */
.training-form-container {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.training-form-container .form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
    text-align: left;
}
html[dir="rtl"] .training-form-container .form-group label {
    text-align: right;
}

.training-form-container .form-group select {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--form-border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    background-color: var(--form-input-bg);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    direction: ltr;
    text-align: left;
}

html[dir="rtl"] .training-form-container .form-group select {
    text-align: right;
}


.training-form-container .form-group select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 5px rgba(0, 102, 204, 0.3);
}

.training-form-container .form-group optgroup {
    font-weight: bold;
    font-style: normal;
    color: var(--text-dark);
    padding: 5px 8px;
}

.training-form-container .form-group optgroup option {
    padding-left: 25px !important;
    color: var(--text-dark);
    background-color: #fff;
}
html[data-theme="dark"] .training-form-container .form-group optgroup option {
    background-color: var(--form-input-bg);
}


.training-form-container .form-group select > option[value=""] {
    color: #777;
    font-style: italic;
    padding-left: 8px;
}
html[data-theme="dark"] .training-form-container .form-group select > option[value=""] {
    color: #aaa;
}


/* Contact Section (Homepage & Contact Page) */
.contact-section { background: #fff; }
html[data-theme="dark"] .contact-section {
    background: var(--light-gray);
}
.contact-wrapper { max-width: 700px; margin: 0 auto; }

/* Contact Page Specifics */
.contact-form { display: flex; flex-direction: column; gap: 1.2rem; background: var(--light-gray); padding: 2.5rem; border-radius: 10px; }
.form-group input, .form-group textarea { width: 100%; padding: 1rem; border: 1px solid var(--form-border-color); border-radius: 5px; font-family: inherit; font-size: 1rem; transition: border-color 0.3s ease, box-shadow 0.3s ease; background-color: var(--form-input-bg); color: var(--text-dark); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary-blue); box-shadow: 0 0 5px rgba(0, 102, 204, 0.3); }

.form-group-icon {
    position: relative;
}
.form-group-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #aaa;
    transition: color 0.3s;
}
.form-group-icon textarea ~ i {
    top: 1.5rem;
    transform: translateY(0);
}
html[dir="rtl"] .form-group-icon i {
    left: auto;
    right: 15px;
}
.form-group-icon input,
.form-group-icon textarea {
    padding-left: 45px !important;
}
html[dir="rtl"] .form-group-icon input,
html[dir="rtl"] .form-group-icon textarea {
    padding-left: 1rem !important;
    padding-right: 45px !important;
}
.form-group-icon input:focus ~ i,
.form-group-icon textarea:focus ~ i {
    color: var(--accent-orange);
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}


.submit-button { 
    align-self: flex-start; 
    background: var(--primary-blue); 
    color: white; 
    padding: 1rem 2.5rem; 
    border: none; 
    border-radius: 5px; 
    cursor: pointer; 
    font-size: 1.1rem; 
    font-weight: 600; 
    text-transform: uppercase; 
    transition: all 0.3s ease;
}
.submit-button:hover { 
    background: var(--dark-blue); 
    transform: translateY(-2px); 
    box-shadow: 0 4px 8px rgba(0, 64, 128, 0.2); 
}
.submit-button:active { 
    transform: translateY(0px);
    box-shadow: 0 2px 4px rgba(0, 64, 128, 0.15);
}


.contact-address-block {
    max-width: 900px;
    margin: 0 auto 3rem auto; 
    text-align: center; 
}

.contact-info-page-title {
    font-size: 1.8rem;
    color: var(--dark-blue);
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-orange);
    display: inline-block; 
}

.contact-info-details-on-page {
    margin-bottom: 0; 
    padding: 1.5rem;
    background-color: var(--light-gray); 
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    text-align: left; 
}
html[data-theme="dark"] .contact-info-details-on-page {
    background-color: var(--body-bg);
    border-color: var(--form-border-color);
}
html[dir="rtl"] .contact-info-details-on-page {
    text-align: right;
}

.contact-info-details-on-page .location-block {
    margin-bottom: 1.8rem;
    padding-bottom: 1.8rem;
    border-bottom: 1px dashed #ccc;
}
html[data-theme="dark"] .contact-info-details-on-page .location-block {
    border-bottom-color: var(--form-border-color);
}
.contact-info-details-on-page .location-block:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.contact-info-details-on-page .location-block h5 {
    color: var(--primary-blue);
    margin-bottom: 0.8rem;
    font-size: 1.15rem;
    font-weight: 600;
    text-transform: uppercase;
    text-align: left;
}
html[dir="rtl"] .contact-info-details-on-page .location-block h5 {
    text-align: right;
}

.contact-info-details-on-page .location-block p {
    font-size: 1rem;
    margin-bottom: 0.6em;
    color: var(--text-dark);
    line-height: 1.6;
    text-align: left;
}
html[dir="rtl"] .contact-info-details-on-page .location-block p {
    text-align: right;
}

.contact-form-image-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr; 
    gap: 3rem;
    align-items: start;
    margin-top: 2rem; 
}

#contact-page .contact-form-page-wrapper {
    max-width: none; 
    margin: 0;
    width: 100%;
}

#contact-page .contact-page-image {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--image-shadow);
    margin: 0; 
}

@media (max-width: 992px) {
    .contact-form-image-grid {
        grid-template-columns: 1fr; 
        gap: 2rem;
    }
    #contact-page .contact-page-image {
        order: -1; 
        margin: 0 auto 2rem auto; 
        max-width: 500px; 
    }
    #contact-page .contact-form-page-wrapper {
        order: 0; 
    }
    .contact-address-block {
        margin-bottom: 2rem;
    }
}


/* Map Container (Global) */
.map-container { 
    margin-top: 4rem; 
    border-radius: 10px; 
    overflow: hidden; 
    box-shadow: 0 6px 18px rgba(0,0,0,0.15); 
    max-width: 1200px; 
    margin-left: auto; 
    margin-right: auto; 
}
html[data-theme="dark"] .map-container > iframe {
    filter: invert(100%) hue-rotate(180deg);
}

.map-container iframe { width: 100%; height: 400px; border: none; }
@media (max-width: 768px) {
    .map-container { margin-top: 3rem; border-radius: 0; }
    .map-container iframe { height: 300px; }
}

/* Footer */
.footer { background: var(--footer-bg); color: var(--footer-text-color); padding: 3rem 2rem; margin-top: 4rem; text-align: left; transition: background-color var(--transition-speed) ease; }
.footer-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 2rem; margin-bottom: 2rem; }
.footer-column { flex-basis: 0; flex-grow: 1; padding: 0 1rem; min-width: 180px; text-align: left; }
.footer-social { flex-grow: 0.5; flex-shrink: 0; min-width: 120px; }
.footer-useful-links { flex-grow: 0.8; flex-shrink: 0; min-width: 150px; }
.footer-useful-links ul { list-style: none; padding: 0; }
.footer-useful-links li { margin-bottom: 0.8em; }
.footer-useful-links a { color: var(--footer-link-color); text-decoration: none; transition: color 0.3s ease; font-size: 0.95rem; }
.footer-useful-links a:hover { color: var(--footer-link-hover-color); }
.footer-contact-info, .footer-contact-info-multi { flex-grow: 2; flex-shrink: 1; min-width: 280px; }
.footer-empty { flex-grow: 0.5; flex-shrink: 0; min-width: 120px; }
.footer-bottom { width: 100%; text-align: center; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,0.1); }
.footer-bottom p { margin: 0; font-size: 0.9rem; opacity: 0.8; }
.footer-column h4 { color: var(--footer-heading-color); margin-bottom: 1.5rem; font-size: 1.3rem; text-align: left; }
.footer-social h4, .footer-useful-links h4 { text-align: center; }
.location-block { margin-bottom: 1.5rem; }
.location-block:last-child { margin-bottom: 0; }
.location-block h5 { color: var(--footer-link-color); margin-bottom: 0.5rem; font-size: 1rem; font-weight: 600; text-transform: uppercase; }
.location-block p { font-size: 0.95rem; margin-bottom: 0.4em; color: var(--footer-text-color); line-height: 1.4; }
.location-block p:last-child { margin-bottom: 0; }
.footer-social .social-links { display: flex; gap: 1.2rem; flex-direction: row; justify-content: center; }
.footer-social .social-links a { color: var(--footer-link-color); font-size: 1.8rem; transition: color 0.3s ease; text-decoration: none; display: inline-flex; align-items: center; gap: 0; }
.footer-social .social-links a:hover { color: var(--footer-link-hover-color); transform: none; }
@media (max-width: 768px) {
    .footer-container { flex-direction: column; align-items: center; gap: 3rem; margin-bottom: 2rem; }
    .footer-column { flex-basis: auto; flex-grow: 0; width: 100%; text-align: center; padding: 0; }
    .footer-social { flex-grow: 0; min-width: auto; order: 1; }
    .footer-social h4 { margin-bottom: 1rem; }
    .footer-social .social-links { justify-content: center; gap: 2rem; }
    .footer-useful-links { flex-grow: 0; min-width: auto; width: 100%; text-align: center; padding: 0 1rem; order: 2; }
    .footer-useful-links h4 { margin-bottom: 1rem; }
    .footer-useful-links ul { text-align: center; }
    .footer-useful-links li { margin-bottom: 0.5em; }
    .footer-contact-info, .footer-contact-info-multi { flex-grow: 0; min-width: auto; width: 100%; text-align: center; padding: 0 1rem; order: 3; }
    .footer-contact-info-multi h4, .location-block h5 { text-align: center; }
    .location-block p { text-align: center; }
    .location-block { margin-bottom: 1.5rem; }
    .footer-empty { display: none; }
    .footer-bottom { margin-top: 0; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,0.1); order: 4; }
}

/* Qui Sommes Nous & Other Content Pages */
#quisommesnous-page .section-container,
#politique-cookies-page .section-container,
#useful-links-page .section-container,
#etudes-page-content .section-container,
#analyse-air-page-content .section-container,
#analyse-eaux-page-content .section-container,
#analyse-sol-page-content .section-container,
#formation-page-content .section-container,
#analyse-bacterienne-page-content .section-container,
#analyse-physicochimique-page-content .section-container,
#analyse-agroalimentaire-page-content .section-container,
#analyse-dechets-solides-page-content .section-container, 
#analyse-bruit-eclairage-page-content .section-container, 
#demande-devis-page .section-container,
#reclamation-page .section-container,
#faq-page .section-container
 {
    background-color: var(--form-input-bg);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    margin-top: 2rem;
    margin-bottom: 2rem;
    transition: background-color var(--transition-speed) ease;
}

.about-page-image { display: block; max-width: 800px; width: 100%; margin: 2rem auto 3rem auto; border-radius: 10px; box-shadow: var(--image-shadow); height: auto; }
.lead-text { font-size: 1.2rem; line-height: 1.8; max-width: 800px; margin: 0 auto 3rem; text-align: center; color: #555; }
html[data-theme="dark"] .lead-text {
    color: #ccc;
}
.mission-block { background: var(--light-gray); padding: 2.5rem; border-radius: 10px; box-shadow: 0 4px 15px rgba(0,0,0,0.08); margin: 2rem auto; max-width: 800px; transition: background-color var(--transition-speed) ease;}
html[data-theme="dark"] .mission-block {
    background: var(--body-bg);
}
.mission-block h2 { color: var(--primary-blue); margin-bottom: 1rem; font-size: 1.8rem; text-align: center; }
.mission-block p { line-height: 1.7; text-align: justify; margin-bottom: 1em; }
.mission-block p:last-of-type { margin-bottom: 0; }

.expertise-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2.5rem; margin-top: 3rem; }
.expertise-card { background: var(--light-gray); padding: 2.5rem; border-radius: 10px; text-align: center; transition: transform 0.4s ease, box-shadow 0.4s ease, background-color var(--transition-speed) ease; box-shadow: 0 5px 15px rgba(0,0,0,0.1); display: flex; flex-direction: column; align-items: center; }
html[data-theme="dark"] .expertise-card {
    background: var(--body-bg);
}
.expertise-card:hover { transform: translateY(-10px); box-shadow: 8px 8px 20px rgba(0,0,0,0.2); }
.expertise-card i { font-size: 3rem; color: var(--accent-orange); margin-bottom: 1.5rem; }
.expertise-card h3 { font-size: 1.4rem; margin-bottom: 0.8rem; color: var(--dark-blue); }
html[data-theme="dark"] .expertise-card h3 {
    color: var(--primary-blue);
}
.expertise-card p { font-size: 1rem; color: #555; }
html[data-theme="dark"] .expertise-card p {
    color: #ccc;
}


.page-subtitle {
    font-size: 1.15rem; 
    line-height: 1.7;
    color: #555; 
    text-align: center;
    max-width: 700px; 
    margin: -1.5rem auto 2.5rem auto; 
}
html[data-theme="dark"] .page-subtitle {
    color: #ccc;
}

@media (max-width: 768px) {
    .page-subtitle {
        font-size: 1rem;
        margin: -1rem auto 2rem auto;
    }
}


/* Animation Classes */
.hero-content, #about .about-grid, .about-page-image, .about-content,
.services-grid, .service-card, .etudes-preview-content,
#etudes-page-content .etude-detail-block, #analyse-air-page-content .etude-detail-block,
#analyse-eaux-page-content .etude-detail-block, 
#analyse-bruit-eclairage-page-content .etude-detail-block, 
#analyse-sol-page-content .etude-detail-block,
#analyse-bacterienne-page-content .etude-detail-block,
#analyse-physicochimique-page-content .etude-detail-block,
#analyse-agroalimentaire-page-content .etude-detail-block,
#analyse-dechets-solides-page-content .etude-detail-block, 
#formation-page-content .etude-detail-block, #formation-page-content .training-form-container,
#contact-page .contact-page-image, #contact-page .contact-form-page-wrapper,
#useful-links-page .section-container, #quisommesnous-page .section-container, #politique-cookies-page .section-container,
.footer-social .social-links, .footer-useful-links li, .footer-contact-info-multi .location-block,
.useful-links-list li, .form-page-wrapper
{
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.hero-content.is-visible, #about .about-grid.is-visible, .about-page-image.is-visible, .about-content.is-visible,
.services-grid.is-visible, 
#etudes-page-content .etude-detail-block.is-visible, #analyse-air-page-content .etude-detail-block.is-visible,
#analyse-eaux-page-content .etude-detail-block.is-visible, 
#analyse-bruit-eclairage-page-content .etude-detail-block.is-visible, 
#analyse-sol-page-content .etude-detail-block.is-visible,
#analyse-bacterienne-page-content .etude-detail-block.is-visible,
#analyse-physicochimique-page-content .etude-detail-block.is-visible,
#analyse-agroalimentaire-page-content .etude-detail-block.is-visible,
#analyse-dechets-solides-page-content .etude-detail-block.is-visible, 
#formation-page-content .etude-detail-block.is-visible, #formation-page-content .training-form-container.is-visible,
#contact-page .contact-page-image.is-visible, #contact-page .contact-form-page-wrapper.is-visible,
#useful-links-page .section-container.is-visible, #quisommesnous-page .section-container.is-visible, #politique-cookies-page .section-container.is-visible,
#demande-devis-page .form-page-wrapper.is-visible, #reclamation-page .form-page-wrapper.is-visible,
.footer-social .social-links.is-visible, .footer-useful-links li.is-visible, .footer-contact-info-multi .location-block.is-visible,
.useful-links-list li.is-visible
{
    opacity: 1;
    transform: translateY(0);
}
.service-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

#faq-page .faq-item {
    opacity: 1;
    transform: translateY(0);
}


/* Staggered Animation Delays */
.about-page-image.is-visible { transition-delay: 0.1s; }
.about-content.is-visible { transition-delay: 0.2s; }
#contact-page .contact-form-page-wrapper.is-visible { transition-delay: 0.1s; }
#contact-page .contact-page-image.is-visible { transition-delay: 0.2s; }
#about .about-grid.is-visible { transition-delay: 0.1s; }

.services-grid .service-card:nth-of-type(1).is-visible { transition-delay: 0.1s; } 
.services-grid .service-card:nth-of-type(2).is-visible { transition-delay: 0.2s; }
.services-grid .service-card:nth-of-type(3).is-visible { transition-delay: 0.3s; }
.services-grid .service-card:nth-of-type(4).is-visible { transition-delay: 0.4s; }
.services-grid .service-card:nth-of-type(5).is-visible { transition-delay: 0.5s; }
.services-grid .service-card:nth-of-type(6).is-visible { transition-delay: 0.6s; }


.etudes-preview-content.is-visible { transition-delay: 0.3s; }

#etudes-page-content .etude-detail-block:nth-of-type(1).is-visible,
#analyse-air-page-content .etude-detail-block:nth-of-type(1).is-visible,
#analyse-eaux-page-content .etude-detail-block:nth-of-type(1).is-visible,
#analyse-bruit-eclairage-page-content .etude-detail-block:nth-of-type(1).is-visible, 
#analyse-sol-page-content .etude-detail-block:nth-of-type(1).is-visible,
#analyse-bacterienne-page-content .etude-detail-block:nth-of-type(1).is-visible,
#analyse-physicochimique-page-content .etude-detail-block:nth-of-type(1).is-visible,
#analyse-agroalimentaire-page-content .etude-detail-block:nth-of-type(1).is-visible,
#analyse-dechets-solides-page-content .etude-detail-block:nth-of-type(1).is-visible, 
#formation-page-content .etude-detail-block:nth-of-type(1).is-visible { transition-delay: 0s; }

#etudes-page-content .etude-detail-block:nth-of-type(2).is-visible,
#analyse-air-page-content .etude-detail-block:nth-of-type(2).is-visible,
#analyse-eaux-page-content .etude-detail-block:nth-of-type(2).is-visible,
#analyse-bruit-eclairage-page-content .etude-detail-block:nth-of-type(2).is-visible, 
#analyse-sol-page-content .etude-detail-block:nth-of-type(2).is-visible,
#analyse-bacterienne-page-content .etude-detail-block:nth-of-type(2).is-visible,
#analyse-physicochimique-page-content .etude-detail-block:nth-of-type(2).is-visible,
#analyse-agroalimentaire-page-content .etude-detail-block:nth-of-type(2).is-visible,
#analyse-dechets-solides-page-content .etude-detail-block:nth-of-type(2).is-visible, 
#formation-page-content .etude-detail-block:nth-of-type(2).is-visible { transition-delay: 0.1s; }

#formation-page-content .etude-detail-block:nth-of-type(3).is-visible,
#analyse-agroalimentaire-page-content .etude-detail-block:nth-of-type(3).is-visible,
#analyse-dechets-solides-page-content .etude-detail-block:nth-of-type(3).is-visible
 { transition-delay: 0.2s; } 
#formation-page-content .training-form-container.is-visible { transition-delay: 0.3s; }


/* Liens Utiles Page Specifics */
.useful-links-list { list-style: none; padding: 0; max-width: 700px; margin: 0 auto; }
.useful-links-list li { margin-bottom: 1.5rem; border-bottom: 1px solid #eee; padding-bottom: 1.5rem; }
html[data-theme="dark"] .useful-links-list li {
    border-bottom-color: var(--form-border-color);
}
.useful-links-list li:last-child { margin-bottom: 0; border-bottom: none; padding-bottom: 0; }
.useful-links-list li a { display: inline-flex; align-items: center; gap: 0.8rem; font-size: 1.1rem; color: var(--primary-blue); text-decoration: none; transition: color 0.3s ease; }
.useful-links-list li a:hover { color: var(--dark-blue); text-decoration: underline; }
.useful-links-list li a i { color: var(--accent-orange); font-size: 1.1rem; flex-shrink: 0; }


/* RTL (Right-to-Left) Styles */
html[dir="rtl"] body { text-align: right; }
html[dir="rtl"] .header { flex-direction: row-reverse; }
html[dir="rtl"] .logo-nav-container { flex-direction: row-reverse; }
html[dir="rtl"] nav ul { flex-direction: row-reverse; }
html[dir="rtl"] .search-lang-mobile-wrapper {
    flex-direction: row-reverse;
}


html[dir="rtl"] .dropdown-menu {
    left: auto;
    right: 0;
}
@media (min-width: 993px) {
    html[dir="rtl"] .dropdown-menu .dropdown .dropdown-menu {
        left: auto;
        right: 100%;
    }
}

html[dir="rtl"] .etude-detail-block .etude-detail-content .etude-text { 
    text-align: right;
}
html[dir="rtl"] .etude-detail-block .etude-detail-content .etude-media-wrapper { 
    flex-direction: row-reverse; 
} 

html[dir="rtl"] .etude-detail-block.reverse-layout .etude-detail-content { 
    grid-template-areas: "text image"; 
}
html[dir="rtl"] .etude-detail-block.reverse-layout .etude-text { 
    grid-area: text; 
    text-align: right;
}
html[dir="rtl"] .etude-detail-block.reverse-layout .etude-image-wrapper,
html[dir="rtl"] .etude-detail-block.reverse-layout .etude-media-wrapper { 
    grid-area: image; 
}
html[dir="rtl"] .etude-detail-block.reverse-layout .etude-media-wrapper { 
    flex-direction: row-reverse; 
} 


html[dir="rtl"] .etude-text ul { margin-left: 0; margin-right: 1.5rem;}


html[dir="rtl"] .about-grid { grid-template-columns: 1.2fr 1fr; grid-template-areas: "text image"; }
html[dir="rtl"] .about-grid .about-text { grid-area: text; text-align: right;}
html[dir="rtl"] .about-grid .about-image { grid-area: image; }
html[dir="rtl"] .about-list li { padding-left: 0; padding-right: 2rem; text-align: right;}
html[dir="rtl"] .about-list li::before { left: auto; right: 0; }


html[dir="rtl"] .form-group input, html[dir="rtl"] .form-group textarea, html[dir="rtl"] .form-group select { text-align: right; }

html[dir="rtl"] #contact-page .form-group input,
html[dir="rtl"] #contact-page .form-group textarea {
    direction: rtl;
}

html[dir="rtl"] .submit-button { align-self: flex-end; }


html[dir="rtl"] .footer-container { flex-direction: row-reverse; }
html[dir="rtl"] .footer-column { text-align: right; }
html[dir="rtl"] .footer-social h4, html[dir="rtl"] .footer-useful-links h4 { text-align: center; }
html[dir="rtl"] .footer-column h4:not(.footer-social h4):not(.footer-useful-links h4) { text-align: right; } 
html[dir="rtl"] .location-block h5, html[dir="rtl"] .location-block p { text-align: right; }
html[dir="rtl"] .footer-social .social-links { flex-direction: row-reverse; }

html[dir="rtl"] .cta-container { flex-direction: row-reverse; }
html[dir="rtl"] .section-title::after { left: auto; right: 50%; transform: translateX(50%); }
html[dir="rtl"] .etude-detail-block h3::after { left: auto; right: 50%; transform: translateX(50%); }
html[dir="rtl"] .etude-text ul, html[dir="rtl"] .about-list { margin-left: 0; margin-right: 1.5rem; padding-left: 0; padding-right: 0; }
html[dir="rtl"] .useful-links-list li a { gap: 0.8rem; flex-direction: row-reverse; }
html[dir="rtl"] .useful-links-list li a i { order: -1; }
html[dir="rtl"] .useful-links-list li {text-align: right;}
html[dir="rtl"] .faq-question { text-align: right; }
html[dir="rtl"] .faq-question i { margin-left: 0; margin-right: 1rem; }

@media (max-width: 992px) {
    html[dir="rtl"] .about-grid { grid-template-columns: 1fr; grid-template-areas: unset; }
    html[dir="rtl"] .about-grid .about-text { grid-area: unset; }
    html[dir="rtl"] .about-grid .about-image { grid-area: unset; order: -1; }

    html[dir="rtl"] .contact-form-image-grid > .contact-form-page-wrapper {
        grid-column: auto; 
        order: 0; 
    }
    html[dir="rtl"] .contact-form-image-grid > .contact-page-image {
        grid-column: auto; 
        order: -1; 
    }
    
    html[dir="rtl"] .etude-detail-block:not(.reverse-layout) .etude-media-wrapper,
    html[dir="rtl"] .etude-detail-block:not(.reverse-layout) .etude-image-wrapper {
        order: -1; 
    }
    html[dir="rtl"] .etude-detail-block.reverse-layout .etude-media-wrapper,
    html[dir="rtl"] .etude-detail-block.reverse-layout .etude-image-wrapper {
        order: initial; 
    }
}

@media (max-width: 768px) {
    html[dir="rtl"] .footer-container { flex-direction: column; align-items: center; }
    html[dir="rtl"] .footer-column { text-align: center; }
    html[dir="rtl"] .footer-column h4 { text-align: center; }
    html[dir="rtl"] .location-block h5, html[dir="rtl"] .location-block p { text-align: center; }
    html[dir="rtl"] .footer-social .social-links { flex-direction: row; justify-content: center; }

    html[dir="rtl"] .etude-media-wrapper {
        flex-direction: column; 
    }
    html[dir="rtl"] .video-container {
        margin-bottom: 1.5rem; 
    }
}

/* --- Messages de Feedback Formulaire --- */
.form-feedback-message {
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    border-radius: 5px;
    font-size: 0.95rem;
    text-align: center;
    display: none; /* Caché par défaut */
    border: 1px solid transparent;
}

.form-feedback-message.success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.form-feedback-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

/* Style pour le conteneur du spinner/loader */
.form-submission-spinner {
    display: none; /* Caché par défaut */
    margin: 10px auto;
    width: 30px;
    height: 30px;
    border: 4px solid rgba(0, 102, 204, 0.2); /* Couleur de fond du spinner */
    border-top-color: var(--primary-blue); /* Couleur principale du spinner */
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* --- Styles pour Mise en Page des Textes Longs --- */

.content-layout-block {
    display: grid;
    grid-template-columns: 1fr 1.5fr; /* Ratio image/texte, ajustable */
    gap: 2.5rem;
    align-items: center;
    margin: 3rem auto;
    padding: 2rem;
    background-color: #ffffff; /* Fond blanc pour contraster avec mission-block */
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.07);
}
html[data-theme="dark"] .content-layout-block {
    background-color: var(--light-gray);
}


.content-layout-block.reverse {
    grid-template-columns: 1.5fr 1fr; /* Inverser l'ordre */
}

.content-layout-block.reverse .content-media {
    order: 2;
}
.content-layout-block.reverse .content-text {
    order: 1;
}

.content-media img { /* S'applique à .content-image-ratio à l'intérieur */
    width: 100%;
    height: auto;
    border-radius: 6px;
    object-fit: cover; /* Assure que l'image couvre bien, même si ratio différent */
}

.content-text h2.content-block-title {
    font-size: 1.8rem;
    color: var(--dark-blue);
    margin-bottom: 1rem;
    text-align: left; /* Ou center si vous préférez */
}
html[data-theme="dark"] .content-text h2.content-block-title {
    color: var(--primary-blue);
}
html[dir="rtl"] .content-text h2.content-block-title {
    text-align: right;
}


.content-text p {
    line-height: 1.8;
    margin-bottom: 1.2rem;
    color: #444;
}
html[data-theme="dark"] .content-text p {
    color: #ccc;
}


.highlight-quote {
    border-left: 4px solid var(--accent-orange);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    font-size: 1.1rem;
    color: #555;
    line-height: 1.7;
}
html[data-theme="dark"] .highlight-quote {
    color: #ddd;
}
html[dir="rtl"] .highlight-quote {
    border-left: none;
    border-right: 4px solid var(--accent-orange);
    padding-left: 0;
    padding-right: 1.5rem;
}

.custom-list {
    list-style: none;
    padding-left: 0;
    margin: 1.5rem 0;
}

.custom-list li {
    padding-left: 1.8rem;
    position: relative;
    margin-bottom: 0.8rem;
    font-size: 1.05rem;
    color: #333;
}
html[data-theme="dark"] .custom-list li {
    color: var(--text-dark);
}
html[dir="rtl"] .custom-list li {
    padding-left: 0;
    padding-right: 1.8rem;
}

.custom-list li::before {
    content: "✓"; /* Ou une icône FontAwesome: content: "\f00c"; font-family: "Font Awesome 6 Free"; font-weight: 900; */
    color: var(--primary-blue);
    position: absolute;
    left: 0;
    top: 2px; /* Ajuster pour alignement vertical */
    font-size: 1.1em;
}
html[dir="rtl"] .custom-list li::before {
    left: auto;
    right: 0;
}


@media (max-width: 992px) {
    .content-layout-block,
    .content-layout-block.reverse {
        grid-template-columns: 1fr; /* Empiler sur mobile */
    }
    .content-layout-block.reverse .content-media,
    .content-layout-block.reverse .content-text {
        order: unset; /* Réinitialiser l'ordre pour l'empilement */
    }
     .content-text h2.content-block-title {
        text-align: center;
    }
    html[dir="rtl"] .content-text h2.content-block-title {
        text-align: center;
    }
}

/* --- Styles pour les cases à cocher --- */
.checkbox-item {
    display: flex;
    align-items: center;
    justify-content: flex-start; /* Aligne les éléments au début */
    gap: 0.8rem; /* Crée un espace cohérent */
}
html[dir="rtl"] .checkbox-item {
    flex-direction: row-reverse; /* Inverse l'ordre pour RTL */
    justify-content: flex-end; /* Aligne à droite en RTL */
}

.checkbox-item input[type="checkbox"] {
    width: auto;
    margin: 0; /* On retire les marges pour se fier au 'gap' */
    accent-color: var(--primary-blue);
    flex-shrink: 0; /* Empêche la case de rétrécir */
}

/* --- Styles pour le menu déroulant de formation --- */
.custom-select-dropdown ul {
    list-style: none; /* Supprime les puces */
    padding: 0;
    margin: 0;
}

.custom-select-dropdown li.option {
    padding-left: 2rem; /* Ajoute une indentation pour les options */
}
html[dir="rtl"] .custom-select-dropdown li.option {
    padding-left: 1rem;
    padding-right: 2rem;
}

.error-message {
    color: #d9534f;
    font-size: 0.85em;
    display: block; 
    margin-top: 4px;
    min-height: 1em; 
}
input.invalid, textarea.invalid, select.invalid, .custom-select-container.invalid {
    border-color: #d9534f !important;
}

/* --- Zone de Glisser-Déposer --- */
.drop-zone {
    border: 2px dashed var(--form-border-color);
    border-radius: 5px;
    padding: 25px;
    text-align: center;
    font-family: inherit;
    color: #777;
    cursor: pointer;
    transition: border-color 0.3s ease, background-color 0.3s ease;
    position: relative; 
    margin-bottom: 0.5rem;
}
html[data-theme="dark"] .drop-zone {
    color: #999;
}
.drop-zone.dragover {
    border-color: var(--primary-blue);
    background-color: rgba(0, 102, 204, 0.05);
}
html[data-theme="dark"] .drop-zone.dragover {
    background-color: rgba(13, 118, 217, 0.15);
}

.drop-zone-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.drop-zone-prompt {
    display: block;
    font-size: 0.9rem;
}

.file-preview {
    margin-top: 8px;
    font-size: 0.9em;
    color: var(--text-dark);
}
.file-preview .file-name {
    font-weight: 600;
}
.file-preview .remove-file {
    color: #d9534f;
    margin-left: 10px;
    cursor: pointer;
    font-weight: bold;
}
html[dir="rtl"] .file-preview .remove-file {
    margin-left: 0;
    margin-right: 10px;
}

/* --- Bannière Cookie --- */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 20px 25px;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
    z-index: 2000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    line-height: 1.4;
    gap: 20px;
}

.cookie-banner.hidden {
    display: none !important;
}

.cookie-banner p {
    margin: 0;
    flex-grow: 1;
}

.cookie-banner p a {
    color: var(--accent-orange);
    text-decoration: underline;
}

.cookie-banner p a:hover {
    color: #ffb866;
}

.cookie-buttons-container {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}

.cookie-accept-button,
.cookie-secondary-button {
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
    white-space: nowrap;
    font-size: 0.85rem;
}

.cookie-accept-button {
    background-color: var(--accent-orange);
    color: white;
}

.cookie-accept-button:hover {
    background-color: #e68a00;
}

.cookie-secondary-button {
    background-color: transparent;
    color: #ecf0f1;
    border: 1px solid #ecf0f1;
}

.cookie-secondary-button:hover {
    background-color: rgba(236, 240, 241, 0.1);
    color: white;
}

@media (max-width: 768px) {
    .cookie-banner {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }
    .cookie-banner p {
        margin-bottom: 15px;
        margin-right: 0;
    }
    .cookie-buttons-container {
        flex-direction: column;
        width: 100%;
        align-items: center;
    }
    .cookie-accept-button,
    .cookie-secondary-button {
        width: 100%;
        max-width: 250px;
        margin-bottom: 5px;
    }
    .cookie-buttons-container button:last-child {
        margin-bottom: 0;
    }
}


/* --- Custom Select --- */
.custom-select-container {
    position: relative;
    width: 100%;
    border: 1px solid var(--form-border-color);
    border-radius: 5px;
    background-color: var(--form-input-bg);
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
}
.custom-select-selected-value {
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #777; 
}
html[data-theme="dark"] .custom-select-selected-value {
    color: #ccc;
}
.custom-select-selected-value.value-selected {
    color: var(--text-dark); 
}

.custom-select-selected-value::after {
    content: '▼';
    font-size: 0.8em;
    margin-left: 10px;
}
html[dir="rtl"] .custom-select-selected-value::after {
    margin-left: 0;
    margin-right: 10px;
}
.custom-select-dropdown {
    position: absolute;
    top: calc(100% + 2px); 
    left: 0;
    right: 0;
    border: 1px solid var(--form-border-color);
    border-radius: 5px;
    background-color: var(--form-input-bg);
    z-index: 10;
    max-height: 250px;
    overflow-y: auto;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.custom-select-header-bar {
    padding: 0.75rem 1rem;
    background-color: #e9ecef;
    color: var(--text-dark);
    font-weight: bold;
    border-bottom: 1px solid #ddd;
    position: sticky;
    top: 0; 
    z-index: 1; 
}
html[data-theme="dark"] .custom-select-header-bar {
    background-color: #3a3a3e;
    border-bottom-color: #555;
}
.custom-select-dropdown li {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid #eee;
    color: var(--text-dark);
}
html[data-theme="dark"] .custom-select-dropdown li {
    border-bottom-color: #444;
}
.custom-select-dropdown li:last-child {
    border-bottom: none;
}
.custom-select-dropdown li:hover {
    background-color: #f0f0f0;
}
html[data-theme="dark"] .custom-select-dropdown li:hover {
    background-color: #4a4a4e;
}

.custom-select-dropdown li.optgroup-label {
    font-weight: bold;
    color: var(--primary-blue);
    background-color: #f8f9fa;
    padding-top: 10px;
    padding-bottom: 5px;
    cursor: default;
    border-top: 1px solid #ddd; 
}
html[data-theme="dark"] .custom-select-dropdown li.optgroup-label {
    background-color: #2c2c30;
    border-top-color: #444;
}
.custom-select-dropdown li.optgroup-label:first-child {
    border-top: none;
}

/* --- AMÉLIORATION : Agrandissement des éléments du formulaire de devis --- */

.form-page-wrapper .contact-form label[data-translate-key="quote_form_services_requested"] {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
}

.checkbox-item {
    padding: 0.3rem 0;
}

.checkbox-item label {
    font-size: 1.2rem;
    line-height: 1.5;
}

.checkbox-item input[type="checkbox"] {
    transform: scale(1.4);
    margin-right: 0.8rem;
}

html[dir="rtl"] .checkbox-item input[type="checkbox"] {
    margin-right: 0;
    margin-left: 0.8rem;
}


/* --- MODALE DE RECHERCHE --- */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2020;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.search-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    cursor: pointer;
}

.modal-content {
    position: relative;
    background: var(--form-input-bg);
    padding: 2.5rem;
    border-radius: 8px;
    width: 90%;
    max-width: 700px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transform: scale(0.95);
    transition: transform 0.3s ease;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}

.search-modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 2.5rem;
    color: #999;
    cursor: pointer;
    line-height: 1;
    padding: 0.5rem;
    transition: color 0.2s, transform 0.2s;
}
.modal-close:hover {
    color: var(--text-dark);
    transform: rotate(90deg);
}

#searchModalTitle {
    color: var(--primary-blue);
    margin: 0 0 1.5rem 0;
    text-align: center;
    font-size: 1.8rem;
}

.modal-search-bar {
    position: relative;
    margin-bottom: 1.5rem;
}

.modal-search-bar i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #888;
}
html[dir="rtl"] .modal-search-bar i {
    left: auto;
    right: 15px;
}

#modalSearchInput {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    font-size: 1.2rem;
    border: 2px solid var(--form-border-color);
    border-radius: 5px;
    background-color: var(--body-bg);
    color: var(--text-dark);
    transition: border-color 0.3s;
}
html[dir="rtl"] #modalSearchInput {
    padding: 1rem 3rem 1rem 1rem;
}
#modalSearchInput:focus {
    outline: none;
    border-color: var(--accent-orange);
}

.modal-search-results {
    overflow-y: auto;
    flex-grow: 1;
}

#modalSearchResultsList {
    list-style: none;
    padding: 0;
    margin: 0;
}
#modalSearchResultsList li a {
    text-decoration: none;
    color: var(--text-dark);
    display: block;
    padding: 12px 15px;
    transition: background-color 0.2s ease-in-out;
    border-bottom: 1px solid var(--form-border-color);
}
#modalSearchResultsList li:last-child a {
    border-bottom: none;
}
#modalSearchResultsList li a:hover {
    background-color: rgba(0, 102, 204, 0.08);
}
html[data-theme="dark"] #modalSearchResultsList li a:hover {
    background-color: rgba(13, 118, 217, 0.15);
}

.search-result-title {
    color: var(--primary-blue);
    font-weight: 600;
    display: block;
    margin-bottom: 4px;
    font-size: 0.95rem;
}
.search-result-snippet {
    font-size: 0.8rem;
    color: #555;
    display: block;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 95%;
}
html[data-theme="dark"] .search-result-snippet {
    color: #bbb;
}
.search-result-title mark,
.search-result-snippet mark {
    background-color: var(--accent-orange);
    color: white;
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: 600;
}
html[data-theme="dark"] .search-result-title mark,
html[data-theme="dark"] .search-result-snippet mark {
    background-color: #e68a00;
}

#modalNoResultsMessage {
    color: #777;
    font-style: italic;
    font-size: 0.9rem;
    padding: 15px;
    text-align: center;
}

body.modal-open {
    overflow: hidden;
}


/* --- Styles pour les NOUVEAUX ÉLÉMENTS de la page d'accueil --- */
#online-services.section.bg-white {
    background-color: #eef7ff;
}
html[data-theme="dark"] #online-services.section.bg-white {
    background-color: var(--body-bg);
}

.online-services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
    margin-top: 2rem;
}

.online-service-box {
    background-color: var(--form-input-bg);
    padding: 2.5rem;
    border-radius: 10px;
    text-align: center;
    text-decoration: none;
    color: var(--text-dark);
    box-shadow: var(--card-shadow);
    transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
    border: 2px solid transparent;
}

.online-service-box:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-hover-shadow);
    border-color: var(--accent-orange);
}

.online-service-box i {
    font-size: 3.5rem;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
}

.online-service-box h3 {
    font-size: 1.6rem;
    color: var(--dark-blue);
    margin-bottom: 0.8rem;
}
html[data-theme="dark"] .online-service-box h3 {
    color: var(--primary-blue);
}

.online-service-box p {
    font-size: 1rem;
    color: #555;
    line-height: 1.6;
}
html[data-theme="dark"] .online-service-box p {
    color: #ccc;
}

.service-card-quote-link {
    display: block;
    margin-top: 0.8rem;
    font-size: 0.85rem;
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
}

.service-card-quote-link:hover {
    text-decoration: underline;
    color: var(--dark-blue);
}

@media (max-width: 768px) {
    .online-services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .online-service-box {
        padding: 2rem;
    }
}

/* --- FAQ Page --- */
.faq-container {
    max-width: 800px;
    margin: 2rem auto 0;
}

.faq-item {
    border-bottom: 1px solid var(--form-border-color);
    margin-bottom: 1rem;
}
.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 1.5rem 0;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--dark-blue);
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: color 0.3s;
}
html[data-theme="dark"] .faq-question {
    color: var(--primary-blue);
}
html[dir="rtl"] .faq-question {
    text-align: right;
}
.faq-question:hover {
    color: var(--accent-orange);
}

.faq-question i {
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 1rem;
}
html[dir="rtl"] .faq-question i {
    margin-left: 0;
    margin-right: 1rem;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-out, padding 0.5s ease-out;
}
.faq-answer p {
    padding: 0 0 1.5rem 0;
    line-height: 1.7;
    color: var(--text-dark);
}

/* --- Bouton Scroll-to-Top --- */
#scrollToTopBtn {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 2010;
    border: none;
    outline: none;
    background-color: var(--primary-blue);
    color: white;
    cursor: pointer;
    padding: 0;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.3s ease, bottom 0.3s ease;
}

#scrollToTopBtn.visible {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#scrollToTopBtn:hover {
    background-color: var(--dark-blue);
    transform: scale(1.1);
}

html[dir="rtl"] #scrollToTopBtn {
    right: auto;
    left: 30px;
}

/* --- STYLES ADDITIONNELS POUR LE MENU DÉROULANT AMÉLIORÉ --- */

/* Conteneur pour le lien et le bouton */
#main-nav li.dropdown {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    position: relative;
}

/* Style du lien principal dans un dropdown */
#main-nav li.dropdown > a.nav-link {
    flex-grow: 1;
    white-space: nowrap;
}

/* Style du bouton de déploiement (la flèche) */
.dropdown-toggle {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.8rem;
    font-size: 0.8em;
    line-height: 1;
    display: none;
}

.dropdown-toggle:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

/* Sur mobile, on affiche le bouton */
@media (max-width: 992px) {
    .dropdown-toggle {
        display: block;
    }

    #main-nav li.dropdown > a.nav-link {
        padding-right: 0;
        flex-shrink: 1;
        min-width: 0;
    }

    html[dir="rtl"] #main-nav li.dropdown > a.nav-link {
        padding-right: 0.8rem;
        padding-left: 0;
    }
}