.youtube-play-button {
    background: url("https://cdn2.iconfinder.com/data/icons/social-icons-color/512/youtube-64.png") no-repeat center center transparent;
    background-size: contain;
    width: 60px;
    height: 60px;
    display: inline-block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: opacity 0.2s ease-in-out;
    opacity: 0.7;
    pointer-events: none;
}

.youtube-play-button:hover {
    opacity: 1;
}

.image-video-plugin {
    position: relative;
    width: 100%;
    max-width: 640px !important;
    margin: 1.5em auto;
    border-radius: 8px;
    overflow: hidden;
    box-sizing: border-box;
}

iframe[src*="youtube"],
iframe[src*="youtube-nocookie"] {
    width: 100% !important;
    max-width: 100% !important;
    aspect-ratio: 16 / 9;
    border: 0;
    border-radius: 8px;
    display: block;
    margin: 1.5em auto;
    box-sizing: border-box;
}

/* ==========================================================================
   TG Auto Contenido — Tabla de Contenidos Minimalista Nativa (Zero JS)
   ========================================================================== */
.tg-toc-container {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-left: 4px solid #00a896;
    border-radius: 8px;
    margin: 1.8em 0 2em 0;
    padding: 12px 18px;
    box-sizing: border-box;
    max-width: 100%;
}

.tg-toc-details {
    margin: 0;
    padding: 0;
}

.tg-toc-summary {
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    color: #0a3836;
    display: flex;
    align-items: center;
    gap: 8px;
    outline: none;
    user-select: none;
    list-style: none;
}

.tg-toc-summary::-webkit-details-marker {
    display: none;
}

.tg-toc-summary::after {
    content: "▾";
    margin-left: auto;
    font-size: 0.85rem;
    color: #64748b;
    transition: transform 0.2s ease;
}

.tg-toc-details[open] .tg-toc-summary::after {
    transform: rotate(180deg);
}

.tg-toc-nav {
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid #e2e8f0;
}

.tg-toc-list {
    margin: 0 0 0 1.2em !important;
    padding: 0 !important;
    list-style-type: decimal !important;
}

.tg-toc-list li {
    margin: 6px 0 !important;
    font-size: 0.935rem;
    line-height: 1.45;
    color: #334155;
}

.tg-toc-list li a {
    color: #0a3836;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.15s ease;
}

.tg-toc-list li a:hover {
    color: #00a896;
    text-decoration: underline;
}

@media (max-width: 600px) {
    .tg-toc-container {
        padding: 10px 14px;
        margin: 1.2em 0 1.5em 0;
    }
    .tg-toc-list li {
        font-size: 0.88rem;
    }
}