/* styles.css */
:root {
    --primary-color: rgb(48, 93, 93);
    --secondary-color: rgb(9, 142, 142);
    --accent-color: rgb(11, 164, 164);
    --dark-color: rgb(50, 87, 87);
    --light-color: #f5f5f5;
    --text-color: rgb(0, 0, 0);
    --text-light: #666666;
    --white: #ffffff;
    --gray: #f5f5f5;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Times New Roman', 'Andalus', serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
margin-bottom: 1rem;
line-height: 1.2;
font-weight: 700;
}

h2 {
font-size: 2.2rem;
color: var(--primary-color);
text-align: center;
margin-bottom: 2.5rem;
position: relative;
text-transform: uppercase;
}

h2::after {
display: block;
width: 100px;
height: 4px;
background-color: var(--accent-color);
margin: 0.8rem auto;
border-radius: 2px;
}

.container {
max-width: 1200px;
margin: 0 auto;
padding: 0 20px;
}

.section {
padding: 5rem 0;
position: relative;
}

.bg-light {
background-color: var(--gray);
}

.btn {
display: inline-block;
background-color: var(--secondary-color);
color: var(--white);
padding: 0.8rem 1.8rem;
border: none;
border-radius: 4px;
text-decoration: none;
font-weight: 600;
transition: var(--transition);
text-transform: uppercase;
font-size: 0.9rem;
letter-spacing: 1px;
cursor: pointer;
}

.btn:hover {
background-color: var(--accent-color);
transform: translateY(-3px);
box-shadow: var(--shadow);
}

.btn-outline {
background-color: transparent;
border: 2px solid var(--white);
color: var(--white);
margin-left: 1rem;
}

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

.btn-view {
background-color: rgba(255, 255, 255, 0.9);
color: var(--primary-color);
padding: 0.5rem 1.2rem;
font-size: 0.8rem;
margin-top: 0.5rem;
display: inline-block;
}

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

/* Header */
header {
    background-color: var(--dark-color);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
    padding: 10px 0;
}

.logo-header {
    display: flex;
    align-items: center;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.logo-header img {
    height: 70px;
    margin-right: 1rem;
    transition: var(--transition);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

header.scrolled .logo-header {
    padding: 0.5rem;
    background-color: rgba(255, 255, 255, 0.95);
}

header.scrolled .logo-header img {
    height: 50px;
}

.logo-header h1 {
    color: var(--dark-color); /* Changé pour contraster avec le fond blanc */
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 1.2rem;
    transition: var(--transition);
}

.logo-header p {
    color: var(--text-color); /* Changé pour contraster avec le fond blanc */
    font-size: 0.9rem;
    transition: var(--transition);
}

/* Pour le header réduit */
header.scrolled .logo-header h1 {
    font-size: 1rem;
}

header.scrolled .logo-header p {
    font-size: 0.8rem;
}
nav ul {
display: flex;
justify-content: center;
list-style: none;
background-color: var(--primary-color);
padding: 1rem 0;
transition: var(--transition);
}

header.scrolled nav ul {
padding: 0.7rem 0;
}
.logo-header h1 {
    color: var(--dark-color); /* Changé pour contraster avec le fond blanc */
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 1.2rem;
    transition: var(--transition);
}

.logo-header p {
    color: var(--text-color); /* Changé pour contraster avec le fond blanc */
    font-size: 0.9rem;
    transition: var(--transition);
}

/* Pour le header réduit */
header.scrolled .logo-header h1 {
    font-size: 1rem;
}

header.scrolled .logo-header p {
    font-size: 0.8rem;
}
nav ul li {
margin: 0 1rem;
}

nav ul li a {
color: var(--white);
text-decoration: none;
font-weight: 500;
padding: 0.5rem 1rem;
border-radius: 4px;
transition: var(--transition);
text-transform: uppercase;
font-size: 0.9rem;
letter-spacing: 1px;
}

nav ul li a:hover {
background-color: var(--secondary-color);
}

.mobile-menu-btn {
display: none;
color: var(--white);
font-size: 1.5rem;
cursor: pointer;
padding: 0.5rem 1rem;
}

/* Banner */
.banner {
background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('banner.jpg');
background-size: cover;
background-position: center;
background-attachment: fixed;
height: 100vh;
min-height: 600px;
display: flex;
align-items: center;
text-align: center;
color: var(--white);
margin-top: 0;
position: relative;
}

.banner-content {
max-width: 800px;
margin: 0 auto;
padding: 0 20px;
animation: fadeInUp 1s ease;
}

.banner h2 {
font-size: 3.5rem;
margin-bottom: 1.5rem;
color: var(--white);
text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
animation: fadeIn 1.5s ease;
}

.banner p {
font-size: 1.5rem;
margin-bottom: 2.5rem;
text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
animation: fadeIn 2s ease;
}

.banner-btns {
display: flex;
justify-content: center;
gap: 1rem;
animation: fadeIn 2.5s ease;
}

.scroll-down {
position: absolute;
bottom: 30px;
left: 50%;
transform: translateX(-50%);
color: var(--white);
font-size: 1.5rem;
animation: bounce 2s infinite;
cursor: pointer;
}

/* About Section */
.about-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 3rem;
margin-top: 2rem;
}

.about-text p {
margin-bottom: 1.5rem;
font-size: 1.1rem;
line-height: 1.8;
}

.stats-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1.5rem;
margin-top: 2rem;
}

.stat-item {
text-align: center;
padding: 1.5rem;
background-color: var(--white);
border-radius: 8px;
box-shadow: var(--shadow);
}

.stat-number {
font-size: 2.5rem;
font-weight: 700;
color: var(--primary-color);
display: block;
margin-bottom: 0.5rem;
}

.stat-label {
font-size: 0.9rem;
color: var(--text-light);
}

.about-values {
display: grid;
gap: 2rem;
}

.value-card {
background-color: var(--white);
padding: 2rem;
border-radius: 8px;
box-shadow: var(--shadow);
border-top: 5px solid var(--accent-color);
transition: var(--transition);
}

.value-card:hover {
transform: translateY(-5px);
box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.value-icon {
font-size: 2rem;
color: var(--accent-color);
margin-bottom: 1rem;
}

.value-card h3 {
color: var(--primary-color);
margin-bottom: 1rem;
font-size: 1.3rem;
}

/* Services Section */
.services-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 2.5rem;
margin-top: 2rem;
}

.service-category {
background-color: var(--white);
padding: 2rem;
border-radius: 8px;
box-shadow: var(--shadow);
transition: var(--transition);
position: relative;
overflow: hidden;
border-top: 3px solid var(--secondary-color);
}

.service-category:hover {
transform: translateY(-5px);
box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
border-top-color: var(--accent-color);
animation: pulse 0.5s ease;
}

.service-icon {
font-size: 2.5rem;
color: var(--accent-color);
margin-bottom: 1.5rem;
}

.service-category h3 {
color: var(--primary-color);
margin-bottom: 1.5rem;
padding-bottom: 0.8rem;
border-bottom: 2px solid var(--light-color);
position: relative;
}

.service-category h3::after {
content: '';
position: absolute;
bottom: -2px;
left: 0;
width: 50px;
height: 2px;
background-color: var(--accent-color);
}

.service-category ul {
list-style: none;
}

.service-category li {
margin-bottom: 0.8rem;
padding-left: 1.5rem;
position: relative;
line-height: 1.6;
}

.service-category li i {
position: absolute;
left: 0;
top: 5px;
color: var(--accent-color);
font-size: 0.8rem;
}

/* Nouveaux styles pour la section Actualités */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.news-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.news-img {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.news-card:hover .news-img img {
    transform: scale(1.05);
}

.news-date {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    text-align: center;
    border-radius: 5px;
}

.news-date .day {
    font-size: 1.5rem;
    font-weight: bold;
    display: block;
    line-height: 1;
}

.news-date .month, .news-date .year {
    font-size: 0.8rem;
    display: block;
}

.news-content {
    padding: 1.5rem;
}

.news-content h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.news-content p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.btn-small {
    padding: 0.5rem 1.2rem;
    font-size: 0.8rem;
}

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

/* Styles pour le bouton "Afficher plus" dans les services */
.btn-show-more {
    background: none;
    border: none;
    color: var(--accent-color);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.btn-show-more i {
    margin-left: 0.5rem;
    transition: var(--transition);
}

.btn-show-more.active i {
    transform: rotate(180deg);
}

/* Améliorations responsive */
@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .service-category {
        padding: 1.5rem;
    }
    
    header {
        padding: 10px 0;
    }
    
    .logo-header {
        flex-direction: column;
        text-align: center;
    }
    
    .logo-header img {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    nav ul {
        flex-direction: column;
    }
    
    .banner h2 {
        font-size: 2.2rem;
    }
}

@media (max-width: 576px) {
    .news-img {
        height: 150px;
    }
    
    .news-content {
        padding: 1rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .banner h2 {
        font-size: 1.8rem;
    }
    
    .banner p {
        font-size: 1.1rem;
    }
    
    .banner-btns {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-outline {
        margin-left: 0;
    }
}

/* Units Section */
.units-tabs {
display: flex;
flex-wrap: wrap;
justify-content: center;
gap: 0.8rem;
margin-bottom: 2.5rem;
}

.tab-btn {
padding: 0.8rem 1.8rem;
background-color: var(--light-color);
border: none;
border-radius: 4px;
cursor: pointer;
font-weight: 600;
transition: var(--transition);
text-transform: uppercase;
font-size: 0.8rem;
letter-spacing: 1px;
}

.tab-btn:hover {
background-color: var(--accent-color);
color: var(--white);
}

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

.unit-content {
display: none;
background-color: var(--white);
padding: 2.5rem;
border-radius: 8px;
box-shadow: var(--shadow);
animation: fadeIn 0.5s ease;
}

.unit-content.active {
display: block;
}

.unit-content h3 {
color: var(--primary-color);
margin-bottom: 1.5rem;
font-size: 1.5rem;
text-align: center;
}

.unit-content ul {
list-style: none;
columns: 2;
column-gap: 2rem;
}

.unit-content li {
margin-bottom: 1rem;
padding-left: 1.8rem;
position: relative;
break-inside: avoid;
}

.unit-content li i {
position: absolute;
left: 0;
top: 5px;
color: var(--accent-color);
}

.unit-contact-info {
margin-top: 2rem;
padding: 1.5rem;
background-color: var(--light-color);
border-radius: 8px;
border-left: 4px solid var(--secondary-color);
}

.unit-contact-info h4 {
color: var(--primary-color);
margin-bottom: 1rem;
font-size: 1.2rem;
}

.unit-contact-info p {
margin-bottom: 0.8rem;
display: flex;
align-items: center;
}

.unit-contact-info i {
margin-right: 0.8rem;
color: var(--accent-color);
width: 20px;
text-align: center;
}

/* Advantages Section */
.advantages-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 2rem;
margin-top: 2rem;
}

.advantage-card {
text-align: center;
padding: 2rem 1.5rem;
background-color: var(--white);
border-radius: 8px;
box-shadow: var(--shadow);
transition: var(--transition);
}

.advantage-card:hover {
transform: translateY(-10px);
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
animation: pulse 0.5s ease;
}

.advantage-icon {
width: 70px;
height: 70px;
background-color: var(--light-color);
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
margin: 0 auto 1.5rem;
font-size: 1.8rem;
color: var(--accent-color);
transition: var(--transition);
}

.advantage-card:hover .advantage-icon {
background-color: var(--accent-color);
color: var(--white);
}

.advantage-card h3 {
color: var(--primary-color);
margin-bottom: 0.8rem;
font-size: 1.2rem;
}

/* Realisations Section */
.realisations-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 1.5rem;
margin-top: 2rem;
}

.realisation-item {
position: relative;
border-radius: 8px;
overflow: hidden;
box-shadow: var(--shadow);
height: 250px;
}

.realisation-img {
width: 100%;
height: 100%;
}

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

.realisation-overlay {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: rgba(48, 93, 93, 0.8);
color: var(--white);
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
opacity: 0;
transition: var(--transition);
padding: 1.5rem;
text-align: center;
}

.realisation-item:hover .realisation-overlay {
opacity: 1;
}

.realisation-item:hover .realisation-img img {
transform: scale(1.1);
}

.realisation-overlay h3 {
color: var(--white);
margin-bottom: 1rem;
font-size: 1.3rem;
transform: translateY(20px);
transition: var(--transition);
}

.realisation-item:hover .realisation-overlay h3 {
transform: translateY(0);
}

.approach {
max-width: 800px;
margin: 4rem auto 0;
text-align: center;
padding: 3rem 2rem;
background-color: var(--primary-color);
color: var(--white);
border-radius: 8px;
box-shadow: var(--shadow);
}

.approach h3 {
margin-bottom: 1.5rem;
font-size: 1.8rem;
color: var(--white);
}

.approach p {
font-size: 1.1rem;
line-height: 1.8;
}

/* Partners Section */
#partenaires .approach {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
    padding: 2rem;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

#partenaires .approach h3 {
    color: var(--white);
    margin-bottom: 1rem;
}
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}
.partners-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
gap: 2.5rem;
margin-top: 2rem;
align-items: center;
}

.partner-item {
background-color: var(--white);
padding: 1.5rem;
border-radius: 8px;
display: flex;
align-items: center;
justify-content: center;
height: 120px;
box-shadow: var(--shadow);
transition: var(--transition);
}

.partner-item:hover {
transform: translateY(-5px);
box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.partners-grid img {
width: 100%;
height: auto;
max-height: 70px;
object-fit: contain;
filter: grayscale(100%);
opacity: 0.8;
transition: var(--transition);
}

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

/* Partners Carousel */
.partners-carousel {
    position: relative;
    margin: 3rem auto;
    max-width: 100%;
    overflow: hidden;
}

.partners-track {
    display: flex;
    transition: transform 0.5s ease;
    gap: 2rem;
    padding: 1rem 0;
}

.partner-item {
    flex: 0 0 calc(20% - 1.6rem);
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 120px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.partner-item img {
    width: 100%;
    height: auto;
    max-height: 70px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.8;
    transition: var(--transition);
}

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

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.carousel-btn:hover {
    background-color: var(--accent-color);
}

.prev-btn {
    left: 10px;
}

.next-btn {
    right: 10px;
}

@media (max-width: 992px) {
    .partner-item {
        flex: 0 0 calc(33.33% - 1.6rem);
    }
}

@media (max-width: 768px) {
    .partner-item {
        flex: 0 0 calc(50% - 1.6rem);
    }
}

@media (max-width: 576px) {
    .partner-item {
        flex: 0 0 calc(100% - 1.6rem);
    }
}

/* Contact Section */
.contact-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 3rem;
margin-top: 2rem;
}

.contact-info {
background-color: var(--white);
padding: 2.5rem;
border-radius: 8px;
box-shadow: var(--shadow);
}

.contact-info h3 {
color: var(--primary-color);
margin-bottom: 1.5rem;
font-size: 1.5rem;
position: relative;
padding-bottom: 0.8rem;
}

.contact-info h3::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
width: 50px;
height: 3px;
background-color: var(--accent-color);
}

.contact-info p {
margin-bottom: 1.5rem;
display: flex;
align-items: flex-start;
line-height: 1.6;
}

.contact-info i {
margin-right: 1rem;
color: var(--accent-color);
font-size: 1.1rem;
margin-top: 3px;
}

.social-links {
display: flex;
gap: 1rem;
margin-top: 2rem;
}

.social-links a {
display: inline-flex;
align-items: center;
justify-content: center;
width: 40px;
height: 40px;
background-color: var(--primary-color);
color: var(--white);
border-radius: 50%;
transition: var(--transition);
font-size: 1rem;
}

.social-links a:hover {
background-color: var(--accent-color);
transform: translateY(-3px);
}

.contact-form {
background-color: var(--white);
padding: 2.5rem;
border-radius: 8px;
box-shadow: var(--shadow);
}

.form-group {
margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
width: 100%;
padding: 1rem;
border: 1px solid #ddd;
border-radius: 4px;
font-family: inherit;
font-size: 1rem;
transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
border-color: var(--accent-color);
outline: none;
box-shadow: 0 0 0 3px rgba(11, 164, 164, 0.2);
}

.form-group textarea {
resize: vertical;
min-height: 150px;
}

.form-message {
margin-top: 1rem;
padding: 0.8rem;
border-radius: 4px;
display: none;
}

.form-message.success {
background-color: #d4edda;
color: #155724;
display: block;
}

.form-message.error {
background-color: #f8d7da;
color: #721c24;
display: block;
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 4rem 0 0;
    position: relative;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
}

.footer-logo img {
    height: 80px;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    transition: var(--transition);
}

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

.footer-logo p {
    color: var(--dark-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
}

.footer-links h3::after,
.footer-contact h3::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
width: 40px;
height: 2px;
background-color: var(--accent-color);
}

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

.footer-links li {
margin-bottom: 0.8rem;
}

.footer-links a {
color: var(--white);
text-decoration: none;
transition: color 0.3s ease;
display: inline-block;
padding: 0.3rem 0;
}

.footer-links a:hover {
color: var(--accent-color);
transform: translateX(5px);
}

.footer-contact p {
margin-bottom: 1rem;
display: flex;
align-items: flex-start;
line-height: 1.6;
}

.footer-contact i {
margin-right: 1rem;
color: var(--accent-color);
font-size: 1.1rem;
margin-top: 3px;
}

.footer-bottom {
text-align: center;
padding: 1.5rem 0;
border-top: 1px solid rgba(255, 255, 255, 0.1);
font-size: 0.9rem;
color: rgba(255, 255, 255, 0.7);
}

/* Back to top button */
.back-to-top {
position: fixed;
bottom: 30px;
right: 30px;
width: 50px;
height: 50px;
background-color: var(--primary-color);
color: var(--white);
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
font-size: 1.2rem;
box-shadow: var(--shadow);
z-index: 999;
opacity: 0;
visibility: hidden;
transition: var(--transition);
}

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

.back-to-top:hover {
background-color: var(--accent-color);
transform: translateY(-5px);
}

/* Animations */
@keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}

@keyframes fadeInUp {
from {
opacity: 0;
transform: translateY(20px);
}
to {
opacity: 1;
transform: translateY(0);
}
}

@keyframes bounce {
0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
40% { transform: translateY(-20px) translateX(-50%); }
60% { transform: translateY(-10px) translateX(-50%); }
}

@keyframes pulse {
0% { transform: scale(1); }
50% { transform: scale(1.05); }
100% { transform: scale(1); }
}

/* Responsive Styles */
@media (max-width: 1200px) {
.unit-content ul {
columns: 1;
}
}

@media (max-width: 992px) {
.about-grid {
grid-template-columns: 1fr;
}

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

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

@media (max-width: 768px) {
.logo-header {
flex-direction: column;
text-align: center;
}

.logo-header img {
    margin-right: 0;
    margin-bottom: 1rem;
}

nav ul {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--primary-color);
    padding: 1rem;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}

nav ul.show {
    display: flex;
}

nav ul li {
    margin: 0.5rem 0;
}

.mobile-menu-btn {
    display: block;
}

.banner h2 {
    font-size: 2.5rem;
}

.banner p {
    font-size: 1.2rem;
}

.banner-btns {
    flex-direction: column;
    gap: 1rem;
}

.btn-outline {
    margin-left: 0;
}

.section {
    padding: 3rem 0;
}

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

@media (max-width: 576px) {
.banner h2 {
font-size: 2rem;
}

h2 {
    font-size: 1.8rem;
}

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

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

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

.units-tabs {
    flex-direction: column;
}

.tab-btn {
    width: 100%;
}
@media (max-width: 576px) {
.banner h2 {
font-size: 2rem;
}

h2 {
    font-size: 1.8rem;
}

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

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

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

.units-tabs {
    flex-direction: column;
}

.tab-btn {
    width: 100%;
}
@keyframes highlightApproach {
    0% { 
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(11, 164, 164, 0.7);
    }
    50% { 
        transform: scale(1.02);
        box-shadow: 0 0 0 15px rgba(11, 164, 164, 0);
    }
    100% { 
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(11, 164, 164, 0);
    }
}

#partenaires .approach {
    animation-fill-mode: forwards;
}
}