.navigation-loading {
    border: 0;
    border-radius: 12px;
    padding: 24px;
    width: min(90vw, 360px);
    color: #1f2937;
    background: #fff;
    text-align: center;
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.2);
}

.navigation-loading::backdrop {
    background: rgba(33, 37, 41, 0.58);
    cursor: wait;
}

.navigation-loading__spinner {
    width: 42px;
    height: 42px;
    margin: 0 auto 16px;
    border: 4px solid #d1d5db;
    border-top-color: #1b2a98;
    border-radius: 50%;
    animation: navigation-loading-spin 0.9s linear infinite;
}

.navigation-loading h2 {
    margin: 0 0 8px;
    font-size: 1.2rem;
}

.navigation-loading p {
    margin: 0;
}

.navigation-loading button {
    margin-top: 16px;
    padding: 8px 16px;
    border: 1px solid #6b7280;
    border-radius: 6px;
    background: #fff;
    color: #1f2937;
}

.navigation-loading [hidden] {
    display: none !important;
}

@keyframes navigation-loading-spin {
    to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
    .navigation-loading__spinner { animation: none; }
}