:root {
    --color-primary: #4a9fb8;
    --color-secondary: #e07856;
    --color-tertiary: #6d5244;
    --color-dark: #2c3e50;
    --color-light: #f8f9fa;
    --color-white: #ffffff;
    --color-gray: #6c757d;
    --color-gray-light: #e9ecef;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-dark);
    background: var(--color-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-full {
    width: 100%;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--color-dark);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
    font-size: 1.25rem;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: #3d8ca3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 159, 184, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

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

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

.intro-text {
    font-size: 1.125rem;
    color: var(--color-gray);
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    text-align: center;
}

.site-header {
    background: var(--color-white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.logo img {
    height: 50px;
    width: auto;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-dark);
    transition: var(--transition);
}

.main-nav {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-list > li {
    position: relative;
}

.nav-list > li > a {
    color: var(--color-dark);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    display: block;
    transition: var(--transition);
}

.nav-list > li > a:hover,
.nav-list > li > a.active {
    color: var(--color-primary);
}

.nav-list .btn-contact {
    background: var(--color-secondary);
    color: var(--color-white);
    border-radius: 4px;
    padding: var(--spacing-xs) var(--spacing-md);
}

.nav-list .btn-contact:hover {
    background: #c96747;
    color: var(--color-white);
}

.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-white);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    min-width: 250px;
    padding: var(--spacing-sm) 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    border-radius: 4px;
}

.submenu li a {
    padding: var(--spacing-xs) var(--spacing-md);
    display: block;
    color: var(--color-dark);
    white-space: nowrap;
}

.submenu li a:hover {
    background: var(--color-light);
    color: var(--color-primary);
}

.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('../images/Fotolia_58335675_M.jpg') center center / cover no-repeat;
    color: var(--color-white);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.1);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(44, 62, 80, 0.5), rgba(74, 159, 184, 0.4));
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: var(--spacing-lg) var(--spacing-md);
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.network-presentation {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.network-presentation h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-lg);
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    /* background: rgba(74, 159, 184, 0.1); */
    border-radius: 50%;
}

.feature-card h3 {
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-gray);
    line-height: 1.6;
}

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

.services h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    position: relative;
    padding: var(--spacing-lg);
    min-height: 280px;
    border-radius: 8px;
    color: var(--color-white);
    overflow: hidden;
    display: flex;
	opacity:.8 !important;
    align-items: flex-start;
    transition: var(--transition);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.6));
    transition: var(--transition);
}

.service-card:hover::before {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.5));
}

.service-audits {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #c96747 100%);
}

.service-physico {
    background: linear-gradient(135deg, var(--color-tertiary) 0%, #5a4538 100%);
}

.service-micro {
    background: linear-gradient(135deg, var(--color-primary) 0%, #3d8ca3 100%);
}

.service-content {
    position: relative;
    z-index: 1;
}

.service-card h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.service-card p {
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.service-link {
    display: inline-block;
    font-weight: 600;
    border-bottom: 2px solid var(--color-white);
    padding-bottom: 2px;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

/* Featured/active */
.service-card.featured {
    transform: translateY(-6px) scale(1.03) !important;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
    z-index: 2;
	opacity:1 !important;
}

.service-card.featured::before {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0.45));
}

.service-card.featured .service-link {
    border-bottom-width: 3px;
}

.services-grid:hover .service-card.featured:not(:hover) {
    transform: none !important;
    box-shadow: none;
    z-index: auto;
	opacity:0.8 !important;
}

.services-grid:hover .service-card.featured:not(:hover)::before {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.6));
}

.services-grid:hover .service-card:hover {
    transform: translateY(-6px) scale(1.03) !important;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
    z-index: 2;
	opacity:1 !important
}

.services-grid:hover .service-card:hover::before {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0.45));
}










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

.laboratories h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.labs-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.lab-card {
    padding: var(--spacing-md);
    background: var(--color-white);
    border: 2px solid var(--color-gray-light);
    border-radius: 8px;
    transition: var(--transition);
    min-height: 190px;
    display: flex;
    flex-direction: column;
}

.lab-logo img {
    transition:transform 0.3s ease, filter 0.3s ease, opacity 0.3s ease;
}

.lab-card:hover .lab-logo img {
    transform:scale(1.1);
}
.lab-card h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.lab-card p {
    color: var(--color-gray);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}


.lab-card {
    cursor:pointer;
    transition:transform 0.25s ease, box-shadow 0.25s ease;
    will-change:transform;
}

.lab-card:hover {
    transform:scale(1.04);
    box-shadow:0 12px 32px rgba(0,0,0,0.15);
    z-index:2;
}

.lab-card:hover h4 {
    color:var(--color-secondary);
}

.lab-card:hover {
    transform:translateY(-4px);
    box-shadow:0 8px 24px rgba(0,0,0,0.12);
}
.labs-preview {
    overflow:visible;
}
.lab-logo {
    margin-top: auto;
    padding-top: var(--spacing-sm);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 58px;
}

.lab-logo img {
    max-height: 46px;
    max-width: 150px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.65;
    transition: var(--transition);
}

.lab-card:hover .lab-logo img {
    filter: grayscale(0%);
    opacity: 1;
}

.map-container {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.map-container iframe {
    display: block;
}

/*
.partners-section {
    padding: var(--spacing-lg) 0;
    background: var(--color-white);
    overflow: hidden;
}

.partners-scroll {
    position: relative;
    overflow: hidden;
}

.partners-track {
    display: flex;
    gap: var(--spacing-lg);
    animation: scroll 40s linear infinite;
}

.partner-logo {
    min-width: 180px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    background: var(--color-white);
    border-radius: 4px;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition);
}

.partner-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
}

.partner-logo img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
}*/

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.site-footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-logo {
    max-width: 200px;
    margin-bottom: var(--spacing-md);
}

.footer-col h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-col a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--color-white);
    padding-left: 4px;
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.8);
}

.contact-info svg {
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
}

.footer-legal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-legal p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.legal-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.legal-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.legal-links a:hover {
    color: var(--color-white);
}

@media (max-width: 968px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--color-white);
        transition: left 0.3s ease;
        overflow-y: auto;
    }

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

    .nav-list {
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 0;
    }

    .nav-list > li {
        width: 100%;
        border-bottom: 1px solid var(--color-gray-light);
    }

    .nav-list > li > a {
        padding: var(--spacing-md);
    }

    .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .has-submenu.active .submenu {
        max-height: 500px;
    }

    .submenu li a {
        padding-left: var(--spacing-lg);
    }

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

    .features-grid {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 640px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .hero {
        min-height: 500px;
    }

    .labs-preview {
        grid-template-columns: 1fr;
    }

    .legal-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

#logoHero{margin-bottom:3em}
#logoHero img{margin:0 auto;}




/* ========================================
   Composants partagés — pages internes
   ======================================== */

/* Breadcrumb */
.page-breadcrumb {
    background: var(--color-light);
    border-bottom: 1px solid var(--color-gray-light);
    padding: 0.75rem 0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-gray);
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--color-primary);
}

.breadcrumb a:hover {
    color: var(--color-secondary);
}

.breadcrumb span {
    color: var(--color-gray);
}

.breadcrumb-current {
    color: var(--color-dark);
    font-weight: 500;
}

/* Hero — pages internes
   Variantes de couleur via modificateurs :
   .page-hero--light  → gradient primaire (prestations)
   Par défaut         → gradient foncé (laboratoires, QSN)
*/
.page-hero {
    background: linear-gradient(135deg, var(--color-dark) 0%, #3a5068 100%);
    padding: 3rem 0;
    color: var(--color-white);
}

.page-hero--light {
    background: linear-gradient(135deg, #1e3a4a 0%, var(--color-primary) 100%);
}

.page-hero h1 {
    color: var(--color-white);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    margin-bottom: 0.5rem;
}

.page-hero p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.05rem;
    margin: 0;
}

/* Sidebar card — partagée entre pages laboratoire et QSN */
.sidebar-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

/* Icône de section (carré coloré avec SVG) */
.section-icon {
    flex-shrink: 0;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Bloc photo pleine largeur avec zoom au survol */
.page-photo {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 2.5rem;
}

.page-photo img {
    width: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.page-photo:hover img {
    transform: scale(1.02);
}

/* Bloc CTA tonal clair (fond bleu pâle) */
.cta-tonal {
    background: linear-gradient(135deg, #f0f9fb, #e8f4f8);
    border-radius: 10px;
    border: 1px solid rgba(74, 159, 184, 0.2);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding: 2rem;
}

.cta-tonal p {
    flex: 1;
    min-width: 200px;
    color: var(--color-dark);
    margin: 0;
    line-height: 1.6;
}

/* Bloc CTA foncé (fond gradient dark) */
.cta-dark {
    background: linear-gradient(135deg, var(--color-dark) 0%, #3a5068 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
    padding: 2.5rem 3rem;
}

.cta-dark h3 {
    color: var(--color-white);
    font-size: 1.3rem;
    margin-bottom: 0.375rem;
}

.cta-dark p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin: 0;
}