#nlPopupOverlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.3s ease;
    padding: 16px;
}

#nlPopupOverlay.is-visible {
    opacity: 1;
}

.nl-popup {
    background: #fff;
    border-radius: 10px;
    padding: 36px 32px;
    max-width: 400px;
    width: 100%;
    position: relative;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

#nlPopupOverlay.is-visible .nl-popup {
    transform: translateY(0);
}

.nl-popup-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 24px;
    color: #999;
    cursor: pointer;
    line-height: 1;
    padding: 4px;
}

.nl-popup-close:hover {
    color: #333;
}

.nl-popup-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.4rem;
    font-weight: 600;
    color: #111;
    margin: 0 0 8px;
}

.nl-popup-desc {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.5;
    margin: 0 0 20px;
}

.nl-popup-form {
    display: flex;
    gap: 8px;
}

.nl-popup-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: border-color 0.15s;
}

.nl-popup-input:focus {
    border-color: #111;
}

.nl-popup-btn {
    padding: 10px 20px;
    background: #111;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s;
}

.nl-popup-btn:hover {
    background: #333;
}

.nl-popup-btn:disabled {
    background: #888;
    cursor: default;
}

.nl-popup-msg {
    margin: 12px 0 0;
    font-size: 0.85rem;
    padding: 8px 12px;
    border-radius: 4px;
}

.nl-popup-msg.success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.nl-popup-msg.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.nl-popup-fine {
    margin: 14px 0 0;
    font-size: 0.72rem;
    color: #aaa;
}

@media (max-width: 480px) {
    .nl-popup {
        padding: 28px 20px;
    }

    .nl-popup-form {
        flex-direction: column;
    }
}