:root {
    --primary-blue: #1a4b8c;
    --secondary-blue: #3474d4;
    --dark-gray: #333333;
    --light-gray: #f5f5f5;
    --gradient: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
    background-color: white;
    overflow-x: hidden;
    color: var(--dark-gray);
}

/* Navigation */
nav {
    background: transparent;
    padding: 1.5rem 2rem 0rem 0rem;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    display: flex;
    justify-content: flex-end;
    transition: all 0.3s ease;
}

nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

nav a {
    color: var(--dark-gray);
    text-decoration: none;
    margin: 0 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
    padding: 0.5rem 0;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-blue);
    transition: width 0.3s ease;
}

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

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

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

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 10%;
    background: white;
    position: relative;
    overflow: hidden;
}

.hero-content {
    width: 50%;
    color: var(--dark-gray);
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-image {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 40%;
    animation: float 6s ease-in-out infinite;
}

/* Services Section */
.services-section {
    padding: 100px 5%;
    background: var(--gradient);
}

.section-services-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
}

.section-contact-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-gray);
}


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

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: transform 0.3s;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-card i {
    font-size: 3rem;
    color: var(--secondary-blue);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-blue);
}

/* CTA Section */
.cta-section {
    padding: 100px 5%;
    background: var(--gradient);
    color: white;
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: white;
    color: var(--primary-blue);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.btn-submit {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: white;
    color: var(--primary-blue);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    /* Mettre le bouton au centre */
    margin-left: auto;
    margin-right: auto;
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem 4rem 2rem 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #eee;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
    margin: 7px;
}

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

/* Animations */
@keyframes float {
    0%, 100% {
        transform: translateY(-50%) translateX(0);
    }
    50% {
        transform: translateY(-50%) translateX(20px);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        width: 100%;
        text-align: center;
        padding: 2rem 0;
    }

    .hero-image {
        display: none;
    }

    nav {
        background: white;
        justify-content: center;
    }

    nav a {
        margin: 0 1rem;
        font-size: 0.9rem;
    }

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