/* Fichier : style.css */
:root {
    --primary: #1a4d6c; /* Bleu Méditerranée */
    --secondary: #d97736; /* Terre cuite / Chaleur corse */
    --dark: #2d3748;
    --light: #f7fafc;
    --white: #ffffff;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main { flex-grow: 1; }

header {
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    font-weight: bold;
    font-size: 1.5rem;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: 1px;
}

nav a {
    text-decoration: none;
    color: var(--dark);
    margin-left: 20px;
    font-weight: 500;
    transition: color 0.3s;
}

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

.hero {
    background-color: var(--primary);
    color: var(--white);
    padding: 100px 20px;
    text-align: center;
    background-blend-mode: multiply;
}

.hero-index { background: linear-gradient(rgba(26, 77, 108, 0.85), rgba(26, 77, 108, 0.5)), url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=1920&q=80') center/cover; }
.hero-page { padding: 60px 20px; }

.hero h1 { font-size: 3rem; margin-bottom: 20px; font-weight: 700; }
.hero-page h1 { font-size: 2.5rem; margin-bottom: 10px; }
.hero p { font-size: 1.25rem; margin-bottom: 30px; opacity: 0.9; }

.btn {
    display: inline-block;
    background-color: var(--secondary);
    color: var(--white);
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: transform 0.2s, background-color 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover { background-color: #c26125; transform: translateY(-2px); }

.section { padding: 80px 20px; max-width: 1200px; margin: 0 auto; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 40px; }

.card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-top: 4px solid var(--primary);
}

.card h3 { color: var(--primary); margin-bottom: 15px; }

h2 { font-size: 2.25rem; color: var(--primary); text-align: center; margin-bottom: 20px; }
h2::after { content: ''; display: block; width: 60px; height: 3px; background-color: var(--secondary); margin: 10px auto 0; }

.text-content { max-width: 900px; margin: 0 auto; font-size: 1.1rem; color: #4a5568; text-align: justify; }
.text-content p { margin-bottom: 20px; }

footer {
    background-color: #1a202c;
    color: #a0aec0;
    padding: 40px 20px;
    font-size: 0.9rem;
    margin-top: auto;
}

.footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.footer-block h4 { color: var(--white); margin-bottom: 15px; text-transform: uppercase; }
.footer-bottom { max-width: 1200px; margin: 30px auto 0; padding-top: 20px; border-top: 1px solid #2d3748; text-align: center; }

/* Formulaires */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: bold; color: var(--dark); }
.form-group input, .form-group textarea { width: 100%; padding: 12px; border: 1px solid #cbd5e0; border-radius: 5px; font-family: inherit; }
.form-group textarea { resize: vertical; min-height: 150px; }

@media (max-width: 768px) {
    .nav-container { flex-direction: column; }
    nav { margin-top: 15px; }
    nav a { margin: 0 10px; }
    .hero h1 { font-size: 2rem; }
}