/* Présentation Section */
.presentation-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    padding: 4rem 0;
}

.presentation-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.presentation-hero {
    text-align: center;
    margin-bottom: 4rem;
}

.presentation-title {
    color: #fff;
    font-size: 4rem;
    font-weight: 900;
    margin: 0;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: 2px;
}

.title-underline {
    width: 100px;
    height: 5px;
    background: linear-gradient(90deg, transparent, #fff, transparent);
    margin: 1.5rem auto;
    border-radius: 10px;
}

.presentation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.presentation-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    transition: all 0.4s ease;
    border: 2px solid transparent;
}

.presentation-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border-color: #667eea;
}

.card-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.presentation-card h2 {
    color: #667eea;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.presentation-card p {
    color: #555;
    line-height: 1.7;
    font-size: 1.05rem;
}

.presentation-card strong {
    color: #764ba2;
    font-weight: 700;
}

.presentation-cta {
    background: rgba(255, 255, 255, 0.98);
    border-radius: 24px;
    padding: 3rem;
    text-align: center;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.25);
    border: 3px solid #667eea;
}

.presentation-cta h2 {
    color: #667eea;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-subtitle {
    color: #764ba2;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.cta-text {
    color: #666;
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    font-style: italic;
}

.contact-box {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1.5rem 3rem;
    border-radius: 50px;
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
}

.contact-box:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.6);
}

.contact-icon {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.contact-email {
    color: #fff;
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.5px;
}

.contact-email:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .presentation-title {
        font-size: 2.5rem;
    }
    
    .presentation-grid {
        grid-template-columns: 1fr;
    }
    
    .presentation-card {
        padding: 2rem;
    }
    
    .presentation-cta {
        padding: 2rem;
    }
    
    .contact-box {
        flex-direction: column;
        padding: 1.5rem 2rem;
    }
    
    .contact-email {
        font-size: 1rem;
        word-break: break-all;
    }
}