:root {
    --primary-color: #001e39;
    --secondary-color: #214177;
    --accent-purple: #6c46af;
    --accent-blue: #00aad7;
    --accent-pink: #a42090;
    --accent-magenta: #ec3986;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --text-dark: #333;
    --text-light: #666;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}

/* Header Styles */
.header {
    background: rgba(0, 30, 57, 0.95);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: var(--primary-color);
    box-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo-text-img {
    height: 70px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 400;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: var(--accent-magenta);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-magenta);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section (Page d'accueil) */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.video-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 30, 57, 0.4);
    z-index: -1;
}

.hero-content {
    text-align: center;
    z-index: 1;
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.main-logo {
    max-width: 500px;
    width: 80%;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0,0,0,0.3));
}

/* Page Content Styles */
.page-container {
    padding-top: 100px;
    min-height: calc(100vh - 200px);
}

.content-section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.page-title {
    font-family: 'Montserrat Alternates', sans-serif;
    font-weight: 600;
    font-size: 3rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-family: 'Montserrat Alternates', sans-serif;
    font-weight: 600;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    text-align: center;
}

/* Mission Steps */
.mission-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.step-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(45deg, var(--accent-magenta), var(--accent-blue));
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.step-number {
    display: inline-flex;
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, var(--accent-magenta), var(--accent-pink));
    color: white;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    margin: 0 auto 1.5rem;
}

.step-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 1.2rem;
}

.step-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* About Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: center;
    margin: 3rem 0;
}

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

.about-image img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.about-content h2 {
    color: var(--primary-color);
    font-family: 'Montserrat Alternates', sans-serif;
    font-weight: 600;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.about-content .role {
    color: var(--accent-magenta);
    font-weight: 600;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.about-content h3 {
    color: var(--primary-color);
    margin: 2rem 0 1rem;
    font-weight: 600;
}

.about-content ul {
    list-style: none;
    padding-left: 0;
}

.about-content li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.about-content li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--accent-magenta);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 1.3rem;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.service-card strong {
    color: var(--primary-color);
}

/* Contact Page */
.contact-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.contact-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.contact-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.contact-item a {
    color: var(--accent-magenta);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* Footer Styles */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 3rem 2rem 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--accent-magenta);
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-section p {
    margin-bottom: 0.5rem;
    color: rgba(255,255,255,0.8);
}

.footer-section a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--accent-magenta);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1rem;
    text-align: center;
    color: rgba(255,255,255,0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--primary-color);
        flex-direction: column;
        padding: 1rem 2rem;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        margin: 0.5rem 0;
    }

    .page-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .main-logo {
        max-width: 300px;
    }

    .about-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .content-section {
        padding: 2rem 1rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }

    .page-title {
        font-size: 2rem;
    }

    .main-logo {
        max-width: 250px;
    }

    .step-card,
    .service-card,
    .contact-item {
        padding: 1.5rem;
    }
}