/* Définition des variables de couleurs */
:root {
    --color-primary: #004080; /* Bleu marine / foncé - Finance Pro */
    --color-secondary: #007bff; /* Bleu moyen - Boutons, liens */
    --color-light: #f4f7fa; /* Arrière-plan clair */
    --color-dark: #333; /* Texte foncé */
    --color-accent: #ffcc00; /* Jaune/Or pour l'accent (optionnel) */
    --font-family-primary: 'Montserrat', sans-serif;
}

/* --------------------
   Base et Réinitialisation
   -------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-primary);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: #fff;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

h1, h2, h3, h4 {
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

h1 { font-size: 2.5em; margin-bottom: 0.5em; }
h2 { font-size: 2em; margin-bottom: 1em; text-align: center; }
h3 { font-size: 1.5em; margin-bottom: 0.8em; }

p { margin-bottom: 1em; }

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--color-primary);
}

/* --------------------
   Boutons (Buttons)
   -------------------- */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: background-color 0.3s, color 0.3s;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-secondary);
    color: white;
    border: 2px solid var(--color-secondary);
    margin-top: 15px;
}

.btn-primary:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
    margin-top: 10px;
}

.btn-secondary:hover {
    background-color: var(--color-secondary);
    color: white;
}

/* --------------------
   Section Héro (Header/Hero)
   -------------------- */
.hero {
    background: var(--color-primary); /* Fond bleu foncé */
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    color: white;
    font-size: 3.5em;
    margin-bottom: 10px;
}

.hero h2 {
    color: #b3d9ff; /* Bleu clair pour le sous-titre */
    font-size: 1.5em;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.1em;
    margin-bottom: 30px;
}

/* --------------------
   Expertise Cards
   -------------------- */
.section-expertise {
    padding: 60px 0;
    background-color: var(--color-light); /* Fond très clair */
}

.section-expertise .container {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.expertise-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08); /* Ombre douce */
    flex: 1;
    text-align: center;
    transition: transform 0.3s;
}

.expertise-card:hover {
    transform: translateY(-5px); /* Effet de légère élévation */
}

.expertise-card .icon {
    font-size: 2.5em;
    display: block;
    margin-bottom: 15px;
}

.expertise-card ul {
    list-style: none;
    padding: 0;
    margin: 15px 0 20px 0;
    text-align: left;
}

.expertise-card ul li {
    padding: 5px 0;
    border-bottom: 1px dashed #eee;
    color: var(--color-dark);
}

.expertise-card ul li:before {
    content: "✓ ";
    color: var(--color-secondary);
    font-weight: bold;
}


/* --------------------
   Section Valeur
   -------------------- */
.section-value {
    padding: 60px 0;
    text-align: center;
}

.value-grid {
    display: flex;
    justify-content: space-around;
    gap: 20px;
    margin-top: 40px;
}

.value-item {
    flex: 1;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.value-item:hover {
    background-color: var(--color-light);
}

.value-item h4 {
    color: var(--color-secondary);
    margin-bottom: 10px;
}

/* --------------------
   CTA (Call to Action)
   -------------------- */
.section-cta {
    background-color: var(--color-primary); /* Bleu marine pour le CTA */
    color: white;
    padding: 60px 0;
    text-align: center;
}

.section-cta h2 {
    color: white;
    margin-bottom: 15px;
}

.section-cta p {
    font-size: 1.2em;
    margin-bottom: 30px;
}

/* --------------------
   Pied de page (Footer)
   -------------------- */
footer {
    background-color: var(--color-dark); /* Gris foncé/noir */
    color: #ccc;
    padding: 20px 0;
    text-align: center;
    font-size: 0.9em;
}

footer a {
    color: #ccc;
}

/* --------------------
   Responsive (Ajustements pour écrans plus petits)
   -------------------- */
@media (max-width: 800px) {
    .section-expertise .container,
    .value-grid {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        font-size: 2.5em;
    }
}