.hero-gradient {
    background: linear-gradient(135deg, #0f172a 0%, #1e40af 100%);
}

.card-hover {
    transition: transform 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
}

/* Modale démo */
#demo-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

#demo-modal.open {
    display: flex;
}

#demo-modal-inner {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    width: min(520px, 90vw);
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

#demo-modal-close {
    position: absolute;
    top: .75rem;
    right: .75rem;
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: #555;
    line-height: 1;
}

#demo-modal h2 {
    margin: 0 0 1.25rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: #1e3a5f;
}