/* Shared styles for learning detail pages (Listening/Speaking/Reading/Writing if applicable) */
:is(.listening-container, .speaking-container, .reading-container, .writing-container) .main-content {
    padding: 40px;
}

:is(.listening-container, .speaking-container, .reading-container, .writing-container) .progress-info {
    color: #6c757d;
    font-size: 0.95rem;
}

:is(.listening-container, .speaking-container, .reading-container, .writing-container) .nav-buttons {
    display: flex;
    gap: 15px;
}

:is(.listening-container, .speaking-container, .reading-container, .writing-container) .btn-nav {
    border-radius: 25px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

:is(.listening-container, .speaking-container, .reading-container, .writing-container) .btn-prev {
    background: white;
    color: #6c757d;
    border: 2px solid #dee2e6;
}

:is(.listening-container, .speaking-container, .reading-container, .writing-container) .btn-nav:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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