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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --gray: #6c757d;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

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

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

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

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
}

.logo-img {
    height: 50px;
    width: auto;
    transition: var(--transition);
}

.logo-img:hover {
    opacity: 0.8;
}

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

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

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

.nav a:hover {
    color: var(--secondary-color);
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.9) 0%, rgba(52, 152, 219, 0.9) 100%), 
                url('../images/keyboard_bleu.jpg') center/cover no-repeat;
    background-blend-mode: overlay;
    color: var(--white);
    padding: 150px 0 100px;
    margin-top: 70px;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    animation: fadeInUp 1s ease;
}

.hero-text {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: backwards;
}

/* À propos Section */
.about {
    padding: 80px 0;
    background: var(--white);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    text-align: center;
}

.about-text {
    text-align: left;
}

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

.about-text p:last-child {
    margin-bottom: 0;
}

/* Valeurs Section */
.valeurs {
    padding: 80px 0;
    background: var(--white);
}

.valeurs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.valeur-card {
    text-align: center;
    padding: 2rem;
    border-radius: 10px;
    transition: var(--transition);
}

.valeur-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.valeur-icon {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.valeur-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.valeur-card p {
    color: var(--gray);
    line-height: 1.8;
}

/* Work Together Section */
.work-together {
    padding: 80px 0;
    background: var(--light-bg);
}

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

.work-text h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.work-text p {
    font-size: 1.1rem;
    color: var(--gray);
    line-height: 1.8;
}

.work-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}


/* Section Mission - Texte à gauche, image à droite */
.mission-section {
    padding: 80px 0;
    background: var(--white);
}

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

.mission-text h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.mission-text p {
    font-size: 1.1rem;
    color: var(--gray);
    line-height: 1.8;
}

.mission-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* Section Valeurs - Image à gauche, texte à droite */
.valeurs-section {
    padding: 80px 0;
    background: var(--light-bg);
}

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

.valeur-text h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.valeur-text p {
    font-size: 1.1rem;
    color: var(--gray);
    line-height: 1.8;
}

.valeur-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}


/* International Section */
.international {
    padding: 80px 0;
    background: var(--white);
}

.international-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.international-content h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.international-content p {
    font-size: 1.1rem;
    color: var(--gray);
    line-height: 1.8;
}

/* About */

.about {
    padding: 80px 0;
    background: var(--white);
}

.about-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.about-content h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--gray);
    line-height: 1.8;
}


/* Contact Section */
.contact {
    padding: 80px 0;
    background: var(--light-bg);
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-intro {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.contact-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 3rem;
}

/* Contact Form */
.contact-form {
    margin-top: 2rem;
}

.form-group {
    position: relative;
    margin-bottom: 2rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    font-family: 'Roboto', sans-serif;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.form-group label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: var(--gray);
    transition: var(--transition);
    pointer-events: none;
}

.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label,
.form-group input:focus + label,
.form-group textarea:focus + label {
    top: -0.5rem;
    left: 0.75rem;
    font-size: 0.85rem;
    color: var(--secondary-color);
    background: var(--light-bg);
    padding: 0 0.5rem;
}

.btn-submit {
    background: var(--secondary-color);
    color: var(--white);
    padding: 1rem 3rem;
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-submit:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 5px;
    display: none;
}

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

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

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

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

/* Responsive */
@media (max-width: 968px) {
    .work-content,
    .mission-content,
    .valeur-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .work-image,
    .mission-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        transition: var(--transition);
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }
    
    .nav.active {
        left: 0;
    }
    
    .nav ul {
        flex-direction: column;
        padding: 2rem;
        gap: 0;
    }
    
    .nav li {
        border-bottom: 1px solid #eee;
    }
    
    .nav a {
        display: block;
        padding: 1rem 0;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-text {
        font-size: 1rem;
    }
    
    .valeurs-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .work-text h2,
    .contact h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }
    
    .logo a {
        font-size: 1.2rem;
    }
}