.breadcrumb-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 15px 0;
    padding: 0 15px;
}

.window-title {
    color: #666;
    margin-bottom: 12px;
    font-size: 15px;
    text-align: center;
    width: 100%;
    max-width: 800px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chapter-nav {
    display: flex;
    justify-content: center;
    gap: 60px;
    width: 100%;
    max-width: 800px;
    margin: 10px auto;
}

.nav-btn, .chapter-nav #info_url3 {
    padding: 8px 20px;
    text-decoration: none;
    border-radius: 20px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-width: 120px;
    text-align: center;
    justify-content: center;
    background-color: #dfdbd2;
    border: 1px solid #c9c4b7;
    color: #4a4841;
}

.prev-btn {
    color: #4a4841;
}

.prev-btn:hover, .chapter-nav #info_url3:hover {
    background-color: #d4cec3;
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.next-btn {
    color: #3a3831;
}

.next-btn:hover {
    background-color: #c9c4b7;
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}

.nav-btn:disabled, .nav-btn.w_gray {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: #e8e5dd;
    color: #999;
    border-color: #d4cec3;
}

.nav-btn:disabled:hover, .nav-btn.w_gray:hover, .chapter-nav #info_url3.w_gray:hover {
    transform: none;
    box-shadow: none;
}

@media (max-width: 768px) {
    .chapter-nav {
        gap: 10px;
    }
    
    .nav-btn, .chapter-nav #info_url3 {
        padding: 6px 12px;
        font-size: 14px;
        min-width: auto;
        flex: 1;
    }
}