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

:root {
    --color1: #0180C1;
    --color2: #2E2E86;
    --color3: #F6A001;
    --text-color: #333;
    --text-secondary: #666;
    --background-light: #f9f9f9;
    --transition-standard: all 0.3s ease;
    --shadow-small: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 5px 15px rgba(30, 115, 190, 0.2);
    --radius-standard: 8px;
}

body {
    font-family: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    height: 200vh;
    background: white;
    color: var(--text-color);
    line-height: 1.6;
}

.hero {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh; /* Garde une hauteur de 100vh */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: opacity 1s ease; /* Animation uniquement sur l'opacité */
    overflow: hidden;
    z-index: 99;
    background-size: 200% 200%;
    animation: waveColors 10s ease infinite;
    background-image: linear-gradient(
            45deg,
            var(--color1),
            var(--color2),
            var(--color3),
            var(--color2),
            var(--color1)
    );
}

.hero.hidden {
    opacity: 0 !important; /* Disparition en douceur */
    pointer-events: none;
}

@keyframes waveColors {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.transparent-text {
    font-size: 3.2rem;
    font-weight: bold;
    color: rgba(255, 255, 255, 0.95);
    -webkit-text-stroke: 1px white;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.5s ease-out;
    padding: 0 20px;
}

footer {
    opacity: 0;
    transition: opacity 0.5s ease-out;
}

.top-bar {
    opacity: 1;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: transparent;
    transition: all 0.5s ease-out;
}

header {
    z-index: 200;
    opacity: 1;
    position: fixed;
    background: white;
    width: 100%;
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
    box-shadow: var(--shadow-small);
}

a {
    font-size: 18px;
    color: var(--color1);
    text-decoration: none;
    transition: var(--transition-standard);
}

a:hover {
    color: var(--color3);
}

a h2 {
    color: var(--text-color);
    transition: color 0.3s ease;
}

a h2:hover {
    color: var(--color1);
}

p {
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: 15px;
    /*color: var(--text-color);*/
}

p a {
    font-size: inherit;
}

h2 {
    margin-bottom: 30px;
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--text-color);
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}

h2:after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color1);
}

.content-section {
    max-width: 1200px;
    margin: 80px auto;
    margin-top: 130px;
    padding: 0 20px;
    position: relative; /* Ajouté pour la gestion du z-index */
    z-index: 1; /* Assure que cette section soit au-dessus de .hero une fois la disparition effectuée */
}

.cran-intro {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    margin-bottom: 30px;
    background: var(--background-light);
    padding: 30px;
    border-radius: var(--radius-standard);
    box-shadow: var(--shadow-small);
}

.cran-intro-text {
    flex: 1;
    min-width: 300px;
}

.cran-intro-image {
    flex: 0 0 300px;
    display: flex;
    justify-content: center;
    padding: 20px;
    background: white;
    border-radius: var(--radius-standard);
    box-shadow: var(--shadow-small);
}

.cran-intro-image img {
    max-width: 100%;
    height: auto;
}

.read-more {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 22px;
    background-color: var(--color1);
    color: white !important;
    border-radius: var(--radius-standard);
    font-weight: 500;
    transition: var(--transition-standard);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 14px;
    box-shadow: var(--shadow-small);
}

.read-more:hover {
    background-color: var(--color2);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.separator {
    width: 70%;
    margin: 60px auto;
    border: none;
    height: 1px;
    background-image: linear-gradient(to right, transparent, var(--color1), transparent);
}

/* Styles pour les départements */
.departments-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 25px;
    margin: 40px 0;
}

.departement-item {
    transition: var(--transition-standard);
    border-radius: var(--radius-standard);
    overflow: hidden;
    flex: 0 0 auto;
    box-shadow: var(--shadow-small);
    border: 1px solid rgba(0,0,0,0.05);
}

.departement-item:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: var(--shadow-medium);
}

.departement-item img {
    display: block;
    max-width: 100%;
    height: auto;
    transition: transform 0.5s ease;
}

.departement-item:hover img {
    transform: scale(1.05);
}

/* Styles pour les actualités */
.news-container {
    background-color: #fff;
    border-radius: var(--radius-standard);
    box-shadow: var(--shadow-small);
    padding: 30px;
    margin: 40px auto;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.actu-card {
    border-radius: var(--radius-standard);
    overflow: hidden;
    box-shadow: var(--shadow-small);
    transition: var(--transition-standard);
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0,0,0,0.05);
}

.actu-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.actu-card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: #f0f0f0;
}

.actu-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.actu-card:hover img {
    transform: scale(1.08);
}

.actu-card-content {
    padding: 20px;
    background-color: white;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.actu-date {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 10px;
    font-style: italic;
}

.actu-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-color);
    font-weight: 600;
    transition: color 0.3s ease;
    line-height: 1.4;
}

.actu-card:hover .actu-title {
    color: var(--color1);
}

/* Styles pour les publications */
.publications-container {
    background-color: #fff;
    border-radius: var(--radius-standard);
    box-shadow: var(--shadow-small);
    padding: 30px;
    margin: 40px auto;
}

.publication-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.publication-item {
    padding: 20px;
    border-radius: var(--radius-standard);
    background-color: var(--background-light);
    transition: var(--transition-standard);
    border: 1px solid rgba(0,0,0,0.05);
    height: 100%;
}

.publication-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    background-color: white;
}

.publication-title {
    font-size: 1.05rem;
    margin-bottom: 12px;
    color: var(--text-color);
    transition: color 0.3s ease;
    font-weight: 600;
    line-height: 1.4;
}

.publication-item:hover .publication-title {
    color: var(--color1);
}

.publication-authors {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Pour le mobile */
@media (max-width: 768px) {
    .transparent-text {
        font-size: 1.8rem;
        padding: 0 15px;
    }

    h2 {
        font-size: 1.8rem;
    }

    /*.content-section {*/
    /*    margin: 50px auto;*/
    /*    margin-top: 530px;*/
    /*}*/

    .cran-intro {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }

    .cran-intro-image {
        flex: 0 0 auto;
        width: 100%; /* Utiliser toute la largeur disponible */
        max-width: 280px; /* Mais limiter la largeur maximale */
        margin: 0 auto; /* Centrer horizontalement */
    }

    .cran-intro-image img {
        max-height: 160px; /* Réduire un peu la hauteur sur mobile */
    }

    .news-grid, .publication-grid {
        grid-template-columns: 1fr;
    }

    .read-more {
        padding: 8px 16px;
        font-size: 13px;
    }

    .departments-container {
        gap: 15px;
    }
}