/* RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* GLOBAL */
body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f6f8;
    color: #333;
}

/* HERO */
.hero {
    height: 100vh;
    background-image: url("https://images.unsplash.com/photo-1522202176988-66273c2fd55f");
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    background: rgba(0, 0, 0, 0.6);
    padding: 40px;
    border-radius: 10px;
    text-align: center;
}

.hero h1 {
    color: white;
    font-size: 3rem;
}

.hero p {
    color: #ddd;
    margin: 15px 0;
}

/* BOUTON */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background: #4CAF50;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

/* HEADER SIMPLE */
.page-header {
    background: #4CAF50;
    color: white;
    padding: 40px;
    text-align: center;
}

/* NAV */
nav {
    background: #333;
}

nav ul {
    list-style: none;
    text-align: center;
}

nav li {
    display: inline-block;
}

nav a {
    color: white;
    padding: 15px 20px;
    display: inline-block;
    text-decoration: none;
}

nav a:hover,
nav a.active {
    background: #4CAF50;
}

/* CONTENU */
main {
    padding: 30px;
}

.card {
    max-width: 900px;
    background: white;
    margin: auto;
    padding: 30px;
    border-radius: 10px;
}

.card img {
    max-width: 100%;
    border-radius: 10px;
    margin-top: 20px;
}

/* FORMULAIRE */
form {
    display: flex;
    flex-direction: column;
}

input, textarea {
    padding: 10px;
    margin-bottom: 15px;
}

button {
    background: #4CAF50;
    color: white;
    padding: 10px;
    border: none;
    cursor: pointer;
}

/* FOOTER */
footer {
    background: #222;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 40px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    nav li {
        display: block;
    }
}