.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    /* Hidden by default */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--color-light-card);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    max-width: 400px;
    width: 100%;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    /* Animation effect */
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay.is-visible .modal-content {
    transform: scale(1);
}

.modal-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    margin: 0 auto 1rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
}

/* Style for the success icon */
.modal-icon.success {
    background: linear-gradient(135deg, var(--color-accent-secondary), var(--color-accent-primary));
}

/* Style for the error icon */
.modal-icon.error {
    background: #e74c3c; /* A standard red for errors */
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-dark-primary);
}

.modal-message {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

#modal-close-btn {
    width: 100%;
    padding: 0.8rem;
}