/* --- Variables de couleurs --- */
:root {
    --primary-blue: #1A2A6C; /* Bleu Nuit */
    --accent-gold: #B29A4E;  /* Or Brossé */
    --text-dark: #333333;
    --text-light: #F5F5F5;
    --white: #FFFFFF;
}

/* --- Reset & Base --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Lato', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
}

h1, h2, h3 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
}

a { text-decoration: none; }

/* --- Navigation --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-blue);
    letter-spacing: 2px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--primary-blue);
    font-weight: 500;
    transition: 0.3s;
}

.nav-links a:hover { color: var(--accent-gold); }

.btn-contact {
    border: 2px solid var(--primary-blue);
    padding: 8px 20px;
    border-radius: 50px;
}

.btn-contact:hover {
    background-color: var(--primary-blue);
    color: var(--white) !important;
}

/* --- Hero Section --- */
.hero {
    height: 80vh;
    background: linear-gradient(rgba(26, 42, 108, 0.8), rgba(26, 42, 108, 0.8)), url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
}

.hero h1 { font-size: 3.5rem; margin-bottom: 20px; }
.hero p { font-size: 1.2rem; margin-bottom: 40px; font-weight: 300; }

.cta-button {
    background-color: var(--accent-gold);
    color: var(--white);
    padding: 15px 35px;
    border-radius: 50px;
    font-weight: bold;
    transition: 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.cta-button:hover {
    background-color: #d4af37;
    transform: translateY(-3px);
}

/* --- Sections Générales --- */
.section-light { padding: 80px 5%; background-color: var(--white); text-align: center; }
.section-dark { padding: 80px 5%; background-color: var(--text-light); text-align: center; }
.container { max-width: 1200px; margin: 0 auto; }

h2 { font-size: 2.5rem; color: var(--primary-blue); margin-bottom: 40px; }
.intro-text { font-size: 1.2rem; max-width: 800px; margin: 0 auto; }

/* --- Services Grid --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: 0.3s;
}

.card:hover { transform: translateY(-10px); }

.card-icon {
    font-size: 40px;
    color: var(--accent-gold);
    margin-bottom: 20px;
}

.card h3 { margin-bottom: 15px; color: var(--primary-blue); }
.card p { margin-bottom: 20px; font-size: 0.95rem; }
.link-gold { color: var(--accent-gold); font-weight: bold; }

/* --- Formulaire --- */
.section-contact {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 80px 5%;
    text-align: center;
}

.section-contact h2 { color: var(--white); }

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input, select, textarea {
    padding: 15px;
    border-radius: 5px;
    border: none;
    font-family: 'Lato', sans-serif;
}

/* --- Footer --- */
footer {
    background-color: #0f1a45;
    color: rgba(255,255,255,0.7);
    padding: 40px 5%;
    text-align: center;
    font-size: 0.9rem;
}

footer a { color: var(--white); margin: 0 10px; }
/* --- Ajout pour les pages internes --- */

/* Images de fond spécifiques */
.hero-immo {
    background: linear-gradient(rgba(26, 42, 108, 0.7), rgba(26, 42, 108, 0.7)), url('https://images.unsplash.com/photo-1493809842364-78817add7ffb?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    height: 60vh; /* Un peu moins haut que l'accueil */
}

.hero-commodities {
    background: linear-gradient(rgba(26, 42, 108, 0.7), rgba(26, 42, 108, 0.7)), url('https://images.unsplash.com/photo-1611974765270-ca1258634369?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    height: 60vh;
}

.hero-art {
    background: linear-gradient(rgba(26, 42, 108, 0.7), rgba(26, 42, 108, 0.7)), url('https://images.unsplash.com/photo-1545989253-02cc26577f88?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    height: 60vh;
}

/* Mise en page du contenu interne */
.page-content {
    padding: 80px 5%;
    max-width: 1000px;
    margin: 0 auto;
    text-align: left;
}

.page-content h2 {
    color: var(--primary-blue);
    border-bottom: 2px solid var(--accent-gold);
    display: inline-block;
    padding-bottom: 10px;
    margin-bottom: 30px;
}

.feature-list {
    list-style: none;
    margin-top: 30px;
}

.feature-list li {
    margin-bottom: 15px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
}

.feature-list i {
    color: var(--accent-gold);
    margin-right: 15px;
}

.back-link {
    display: block;
    margin-top: 50px;
    color: var(--primary-blue);
    font-weight: bold;
}