/* Variables CSS */
:root {
    --primary-color: #2C5282;
    --secondary-color: #ED8936;
    --accent-color: #4A5568;
    --text-color: #2D3748;
    --light-text: #718096;
    --white: #FFFFFF;
    --light-bg: #F7FAFC;
    --border-color: #E2E8F0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

.preloader {
    position: fixed;
    inset: 0;
    background: #0f172a;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.preloader.hide {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
    color: var(--white);
}

.preloader-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.preloader-logo i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.preloader-logo img {
    max-height: 80px;
    width: auto;
}

.preloader-spinner {
    width: 40px;
    height: 40px;
    border-radius: 999px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--secondary-color);
    animation: preloader-spin 0.8s linear infinite;
    margin: 0 auto;
}

@keyframes preloader-spin {
    to { transform: rotate(360deg); }
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Typographie */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--light-text);
}

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #2A4A6B;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: #DD7724;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-logo i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.nav-logo img {
    height: 48px;
    width: auto;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

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

.nav-toggle,
.nav-close {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

/* Section Héro */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--light-bg) 0%, #E6FFFA 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.highlight {
    color: var(--primary-color);
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--secondary-color);
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--light-text);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
}

.hero-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

/* Sections générales */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    color: var(--text-color);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--light-text);
    max-width: 600px;
    margin: 0 auto;
}

/* Section À Propos */
.about {
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

.value-item {
    text-align: center;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    background: var(--light-bg);
    transition: var(--transition);
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.value-item i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.value-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.about-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

/* Section Services */
.services {
    background: var(--light-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-image {
    height: 200px;
    overflow: hidden;
}

.service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.service-card:hover .service-img {
    transform: scale(1.1);
}

.service-content {
    padding: 2rem;
}

.service-title {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-description {
    margin-bottom: 1.5rem;
}

.service-features {
    list-style: none;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--light-text);
}

.service-features i {
    color: var(--secondary-color);
}

/* Section Portfolio */
.portfolio {
    background: var(--white);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.portfolio-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
    padding: 2rem;
    transform: translateY(100%);
    transition: var(--transition);
}

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

.portfolio-overlay h4 {
    margin-bottom: 0.5rem;
}

/* Section Témoignages */
.testimonials {
    background: var(--light-bg);
}

.testimonials-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-item {
    display: none;
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    text-align: center;
}

.testimonial-item.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

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

.testimonial-text {
    margin-bottom: 2rem;
}

.testimonial-text i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.testimonial-text p {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--text-color);
}

.testimonial-author {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.author-info h4 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.author-info span {
    color: var(--light-text);
    font-size: 0.9rem;
}

.testimonial-rating {
    color: var(--secondary-color);
}

.testimonials-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.testimonial-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.testimonial-btn.active {
    background: var(--secondary-color);
}

/* Section Contact */
.contact {
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: 0.25rem;
}

.contact-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-item a {
    color: var(--light-text);
    text-decoration: none;
    transition: var(--transition);
}

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

.contact-form {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 15px;
}

.contact-form h3 {
    color: var(--primary-color);
    margin-bottom: 2rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 82, 130, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: var(--text-color);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.footer-logo img {
    height: 56px;
    width: auto;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 1rem;
}

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

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

.footer-links a {
    color: #CBD5E0;
    text-decoration: none;
    transition: var(--transition);
}

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

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #4A5568;
    color: #CBD5E0;
}

/* Bouton retour en haut */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    cursor: pointer;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    margin: 5% auto;
    text-align: center;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    color: var(--white);
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition);
}

.lightbox-close:hover {
    color: var(--secondary-color);
}

.lightbox-img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--border-radius);
}

.lightbox-caption {
    color: var(--white);
    margin-top: 1rem;
    font-size: 1.1rem;
}

/* Animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: slideInUp 0.6s ease-out;
}

/* Responsive Design */
@media screen and (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: var(--transition);
        z-index: 1001;
    }
    
    .nav-menu.show {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .nav-link {
        font-size: 1.2rem;
    }
    
    .nav-toggle,
    .nav-close {
        display: block;
    }

    .nav-logo img {
        height: 40px;
    }

    .preloader-logo img {
        max-height: 60px;
    }

    .nav-close {
        position: absolute;
        top: 2rem;
        right: 2rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        justify-content: center;
    }
}

@media screen and (max-width: 768px) {
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }

    .nav-logo {
        font-size: 1.2rem;
    }

    .footer-logo img {
        height: 48px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-item {
        padding: 2rem;
    }
    
    .testimonial-author {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }

    .nav-logo img {
        height: 36px;
    }

    .preloader-logo {
        flex-direction: column;
        font-size: 1.2rem;
    }

    .footer-logo {
        justify-content: center;
        flex-direction: column;
    }
    
    .service-content {
        padding: 1.5rem;
    }
    
    .testimonial-item {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
}