.mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: white;
    box-shadow: var(--shadow);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 999;
}

.nav-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.7rem 1.2rem;
    border-radius: 10px;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.nav-btn:hover:not(:disabled) {
    background: #2980b9;
    transform: translateY(-2px);
}

.nav-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
}

.nav-counter {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 1.1rem;
}

@media (max-width: 768px) {

    .object-container {
        padding: 15px;
    }

    .article-image {
        height: 200px;
    }

    .article-content {
        padding: 1rem;
    }
}