.youtube {
    color: #ff0033;
}

.github {
    color: #ffffff;
}

.video-link {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--md-default-bg-color);
    border: 2px solid var(--md-default-fg-color--light);
    border-radius: 8px;
    height: 112px;
    margin: 1em 0;
    font-size: 2em;
    font-weight: 500;
    transition: background 0.2s, border-color 0.2s;
}

.video-link:hover {
    background: var(--md-accent-fg-color--transparent);
    border-color: var(--md-accent-fg-color);
}

.video-link a {
    color: var(--md-accent-fg-color);
    text-decoration: none;
}




.content-box {
    background: var(--md-default-bg-color);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    max-width: auto;
    margin: 0 auto;
    padding: 20px;
}

.content-box maintitle{
    margin-top: 0;
    text-align: center;
}

.tabs {
    display: flex;
    margin-top: 20px;
    border-bottom: 2px solid #ccc;
}

.tab {
    flex: 1;
    text-align: center;
    padding: 10px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.tab.active {
    border-color: #007BFF;
    font-weight: bold;
    color: #007BFF;
}

.tab-content {
    display: none;
    padding: 20px 0;
}

.tab-content.active {
    display: block;
}


.purple-title {
    color: var(--md-primary-fg-color);
}