/* Reset et styles de base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fafafa;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo img {
    height: 40px;
}

.logo-link {
    display: inline-block;
    text-decoration: none;
    transition: transform 0.3s ease;
}

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

#nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover {
    color: #1e3a8a;
}

.lang-selector {
    position: relative;
    display: inline-block;
}

.lang-btn {
    background: transparent;
    border: 1px solid #e5e7eb;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lang-btn:hover {
    background: #f3f4f6;
}

.lang-btn::after {
    content: '\25BC';
    font-size: 0.75rem;
}

.lang-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    min-width: 150px;
    z-index: 1000;
    margin-top: 0.5rem;
    overflow: hidden;
}

.lang-selector:hover .lang-dropdown,
.lang-selector.active .lang-dropdown {
    display: block;
}

.lang-dropdown a {
    display: block;
    padding: 0.75rem 1rem;
    color: #374151;
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.lang-dropdown a:hover {
    background: #f3f4f6;
    color: #1e3a8a;
    border-left-color: #1e3a8a;
}

.lang-dropdown a.active {
    background: #eff6ff;
    color: #1e3a8a;
    border-left-color: #1e3a8a;
    font-weight: 600;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    padding-top: 6rem;
    padding-bottom: 4rem;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #0f172a 100%);
    color: white;
    overflow: hidden;
}

/* Styles pour le carrousel */
.hero-carousel-container {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.6) 0%, rgba(30, 58, 138, 0.5) 50%, rgba(15, 23, 42, 0.6) 100%);
    z-index: 5;
}

.hero-content {
    position: relative;
    z-index: 10;
}

.hero-text {
    max-width: 56rem;
    position: relative;
    z-index: 10;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero h1 {
    font-size: 3.75rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.hero p {
    font-size: 1.5rem;
    color: #bfdbfe;
    margin-bottom: 2rem;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: white;
    color: #1e3a8a;
}

.btn-primary:hover {
    background: #dbeafe;
}

.btn-full {
    width: 100%;
}

/* About Section */
.about {
    padding: 4rem 0;
    background: white;
}

.about h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 2rem;
}

.about-content {
    max-width: 56rem;
}

.about-content p {
    font-size: 1.125rem;
    color: #374151;
    margin-bottom: 1.5rem;
}

/* Services Section */
.services {
    padding: 4rem 0;
    background: #f9fafb;
}

.services h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 3rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.25rem;
    color: #6b7280;
    text-align: center;
    max-width: 48rem;
    margin: 0 auto 3rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s;
    animation: slideUp 0.6s ease-out forwards;
}

.service-card:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.service-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 0.75rem 0.75rem 0 0;
    margin: -2rem -2rem 1rem -2rem;
}

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

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

.service-icon {
    width: 3rem;
    height: 3rem;
    background: #1e3a8a;
    color: white;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #0f172a;
    margin-bottom: 0.75rem;
}

.service-card p {
    color: #6b7280;
}

/* Projects Section */
.projects {
    padding: 4rem 0;
    background: white;
}

.projects h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 1rem;
    text-align: center;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s;
    animation: slideUp 0.6s ease-out forwards;
}

.project-card:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.project-image {
    height: 12rem;
    background: linear-gradient(135deg, #1e3a8a, #0f172a);
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #0f172a;
    margin-bottom: 0.75rem;
}

.project-content p {
    color: #6b7280;
}

/* Careers Section */
.careers {
    padding: 4rem 0;
    background: #1e3a8a;
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.careers-banner-container {
    margin: 2rem 0;
    position: relative;
    z-index: 5;
}

.careers-banner img {
    width: 100%;
    height: auto;
    border-radius: 0.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    animation: slideInLeft 0.8s ease-out;
}

.careers-content {
    max-width: 48rem;
    margin: 0 auto;
}

.careers h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.careers .section-subtitle {
    font-size: 1.25rem;
    color: #bfdbfe;
    margin-bottom: 1.5rem;
}

.careers p {
    font-size: 1.125rem;
    color: #bfdbfe;
    margin-bottom: 2rem;
}

/* Contact Section */
.contact {
    padding: 4rem 0;
    background: #f9fafb;
}

.contact-content {
    max-width: 42rem;
    margin: 0 auto;
}

.contact h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 1rem;
    text-align: center;
}

.contact .section-subtitle {
    font-size: 1.25rem;
    color: #6b7280;
    margin-bottom: 0.5rem;
}

.contact > .container > .contact-content > p {
    font-size: 1.125rem;
    color: #6b7280;
    text-align: center;
    margin-bottom: 2rem;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    animation: fadeInUp 0.8s ease-out;
}

.form-group {
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out forwards;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1e3a8a;
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

/* Footer */
.footer {
    background: #0f172a;
    color: white;
    padding: 3rem 0;
    animation: fadeIn 1s ease-out;
}

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

.footer-logo {
    filter: brightness(0) invert(1);
    margin-bottom: 1rem;
}

.footer-col h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-col p,
.footer-col ul {
    color: #9ca3af;
    font-size: 0.875rem;
}

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

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    #nav {
        display: none;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.125rem;
    }

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

    .container {
        padding: 0 1rem;
    }
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}


/* ===== ANIMATIONS ===== */

/* Animation du carrousel */
@keyframes carouselFade {
    0% { opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { opacity: 0; }
}

.carousel-slide.active {
    animation: carouselFade 8s ease-in-out forwards;
}

/* Animation du texte du héro */
@keyframes titleSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.hero-title-animated {
    animation: titleSlideIn 0.8s ease-out 0.2s both;
}

.hero-subtitle-animated {
    animation: subtitleSlideIn 0.8s ease-out 0.4s both;
}

/* Animation du bouton Contact */
@keyframes buttonSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.hero .btn {
    animation: buttonSlideIn 0.8s ease-out 0.6s both;
}

/* Animation des cartes de service */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }
.service-card:nth-child(6) { animation-delay: 0.6s; }

/* Animation du bandeau carrières */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Animation des projets */
.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }

/* Animation du formulaire de contact */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.2s; }
.form-group:nth-child(3) { animation-delay: 0.3s; }

/* Animation du footer */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Améliorations des transitions */
a, button, input, textarea {
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* Animation du texte de section */
.section-subtitle {
    animation: fadeInUp 0.8s ease-out;
}

h2 {
    animation: fadeInUp 0.8s ease-out;
}

/* Indicateurs du carrousel */
.carousel-indicators {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    z-index: 20;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-indicator.active {
    background: white;
    transform: scale(1.3);
}

.carousel-indicator:hover {
    background: rgba(255, 255, 255, 0.8);
}

/* Effet de zoom subtil au survol du héro */
.hero:hover .carousel-slide {
    transform: scale(1.02);
    transition: transform 0.5s ease;
}