/* Mise en page moderne pour la page des natures */

h1 {
    text-align: center;
    color: teal;
    margin-bottom: 0.5em;
}

/* Encadré introductif */
.intro-box {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 1em 1.5em;
    margin: 1em auto 2em auto;
    max-width: 900px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.intro-box p {
    margin: 0;
    text-align: justify;
    color: #444;
    font-size: 1.05em;
}

.intro-box a {
    color: teal;
    font-weight: bold;
    text-decoration: none;
}

.intro-box a:hover {
    text-decoration: underline;
    color: darkorange;
}

/* Grille des cartes */
.nature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2em;
    margin: 0 auto;
    max-width: 1200px;
}

.nature-card {
    background: white;
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 1.5em;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.nature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.nature-card h2 {
    color: teal;
    margin-bottom: 1em;
    font-size: 1.3em;
    text-align: center;
}

.nature-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nature-card li {
    margin-bottom: 0.5em;
    text-align: center;
}

.nature-card a {
    text-decoration: none;
    color: navy;
    font-weight: bold;
    transition: color 0.2s;
}

.nature-card a:hover {
    color: darkorange;
}