/* Polices et réinitialisation */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    background-color: #f4f4f9;
    color: #333;
}

/* En-tête */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://source.unsplash.com/1600x900/?abstract') center/cover no-repeat;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.hero p {
    font-size: 1.2rem;
    font-weight: 300;
}

/* Groupes */
.group {
    padding: 50px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.group h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: #555;
    border-left: 5px solid #3498db;
    padding-left: 10px;
}

/* Projets */
.projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.project-card {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
}

.project-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #333;
}

.project-card p {
    font-size: 1rem;
    margin-bottom: 20px;
    color: #666;
}

.project-card a {
    text-decoration: none;
    color: #3498db;
    font-weight: 600;
    border: 2px solid #3498db;
    padding: 10px 20px;
    border-radius: 5px;
    transition: background 0.3s ease, color 0.3s ease;
}

.project-card a:hover {
    background: #3498db;
    color: #fff;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background: #333;
    color: #fff;
}