:root {
    --green-dark: #1b5e20;
    --green-main: #2e7d32;
    --green-light: #4caf50;
    --green-pale: #c8e6c9;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --dark-gray: #333333;
    --text-gray: #666666;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: white;
}

.navbar {
    background: linear-gradient(135deg, var(--green-dark), var(--green-main));
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--white);
}

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

.nav-menu a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: var(--green-pale);
}

.cta-button {
    background-color: var(--white);
    color: var(--green-main);
    padding: 1rem 2.5rem;
    font-size: 1rem;
    border: none;
    border-radius: 50px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    width: fit-content;
}

.cta-button:hover {
    background-color: var(--green-pale);
    color: var(--green-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.enjeux, .solutions, .actions, .contact {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.enjeux, .actions, .contact {
    background-color: var(--light-gray);
}

.enjeux h2, .solutions h2, .actions h2, .contact h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(3, minmax(250px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--white);
    border-left: 5px solid var(--green-main);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(46, 125, 50, 0.2);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.card h3 {
    color: var(--green-dark);
    margin-bottom: 1rem;
}

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

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(280px, 1fr));
    gap: 2.5rem;
}

.solution-item {
    background: linear-gradient(135deg, var(--green-pale), var(--green-light));
    padding: 2.5rem;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.solution-item:hover {
    background: linear-gradient(135deg, var(--green-light), var(--green-main));
    color: var(--white);
    transform: scale(1.05);
}

.solution-item h3 {
    color: var(--green-dark);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.solution-item p {
    line-height: 1.7;
}

.solution-item:hover h3,
.solution-item:hover p {
    color: var(--white);
}

.about {
    background: var(--green-light);
    color: var(--white);
    padding: 3rem;
    text-align: center;
    border-radius: 8px;
    margin-top: 2rem;
}

.about h3 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.about p {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1rem;
    line-height: 1.8;
}

.contact-form {
    max-width: 600px;
    margin: 2rem auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 2px solid var(--green-light);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--green-dark);
    box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
}

.footer {
    background: linear-gradient(135deg, var(--green-dark), var(--green-main));
    color: var(--white);
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.action-card {
    background: linear-gradient(135deg, var(--green-main), var(--green-dark));
    color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(43, 125, 50, 0.2);
}

.action-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(43, 125, 50, 0.4);
}

.action-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background-color: var(--green-pale);
    color: var(--green-dark);
    border-radius: 50%;
    line-height: 50px;
    font-weight: bold;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.action-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.action-card p {
    font-size: 0.95rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .enjeux h2, .solutions h2, .actions h2, .contact h2 {
        font-size: 2rem;
    }

    .actions-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1.5rem;
    }

    .action-number {
        width: 40px;
        height: 40px;
        line-height: 40px;
        font-size: 1.2rem;
    }
}

.bande {
    background-image: url("../images/chad-madden-9HDfRHhCxME-unsplash(1).jpg");
    background-size: cover;
    background-position: center;
    padding: 8rem 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 400px;
    color: white;
}