.toc-container {
    margin: 2em 0;
    padding: 1.5em;
    border: 1px solid #e1e1e1;
    border-radius: 4px;
    background: #f9f9f9;
    font-size: 95%;
    line-height: 1.6;
}

.toc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1em;
    padding-bottom: 0.5em;
    border-bottom: 2px solid #e1e1e1;
}

.toc-title {
    margin: 0;
    font-size: 1.2em;
    font-weight: 600;
    color: #333;
}

.toc-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5em;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.toc-toggle:hover {
    opacity: 0.7;
}

.toc-toggle-icon {
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid #666;
    transition: transform 0.3s ease;
}

.toc-toggle[aria-expanded="false"] .toc-toggle-icon {
    transform: rotate(-90deg);
}

.toc-content {
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    max-height: 5000px;
    opacity: 1;
}

.toc-content.toc-hidden {
    max-height: 0;
    opacity: 0;
    margin: 0;
}

.toc-list {
    margin: 0;
    padding-left: 0;
    list-style: none;
}

.toc-numbered .toc-list {
    counter-reset: toc-counter;
}

.toc-numbered .toc-item::before {
    counter-increment: toc-counter;
    content: counters(toc-counter, ".") ". ";
    margin-right: 0.5em;
    color: #666;
}

.toc-bulleted .toc-list .toc-item::before {
    content: "• ";
    margin-right: 0.5em;
    color: #666;
}

.toc-hierarchical .toc-list .toc-list {
    margin-top: 0.5em;
    margin-bottom: 0.5em;
    padding-left: 1.5em;
}

.toc-flat .toc-list .toc-list {
    padding-left: 0;
}

.toc-item {
    margin: 0.5em 0;
}

.toc-link {
    color: #0073aa;
    text-decoration: none;
    transition: color 0.2s ease;
}

.toc-link:hover {
    color: #005177;
    text-decoration: underline;
}

.toc-anchor {
    display: block;
    position: relative;
    top: -80px;
    visibility: hidden;
}

/* Grey Theme */
.toc-theme-grey {
    background: #f9f9f9;
    border-color: #e1e1e1;
}

.toc-theme-grey .toc-header {
    border-bottom-color: #e1e1e1;
}

.toc-theme-grey .toc-title {
    color: #333;
}

/* Light Blue Theme */
.toc-theme-light-blue {
    background: #e8f4f8;
    border-color: #b3d9e6;
}

.toc-theme-light-blue .toc-header {
    border-bottom-color: #b3d9e6;
}

.toc-theme-light-blue .toc-title {
    color: #0c5460;
}

.toc-theme-light-blue .toc-link {
    color: #0c5460;
}

.toc-theme-light-blue .toc-link:hover {
    color: #062a30;
}

/* White Theme */
.toc-theme-white {
    background: #ffffff;
    border-color: #ddd;
}

.toc-theme-white .toc-header {
    border-bottom-color: #ddd;
}

.toc-theme-white .toc-title {
    color: #333;
}

/* Black Theme */
.toc-theme-black {
    background: #1e1e1e;
    border-color: #444;
    color: #e0e0e0;
}

.toc-theme-black .toc-header {
    border-bottom-color: #444;
}

.toc-theme-black .toc-title {
    color: #fff;
}

.toc-theme-black .toc-link {
    color: #60a5fa;
}

.toc-theme-black .toc-link:hover {
    color: #93c5fd;
}

.toc-theme-black .toc-item::before {
    color: #888;
}

.toc-theme-black .toc-toggle-icon {
    border-top-color: #e0e0e0;
}

/* Transparent Theme */
.toc-theme-transparent {
    background: transparent;
    border-color: rgba(0, 0, 0, 0.1);
}

.toc-theme-transparent .toc-header {
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

.toc-theme-transparent .toc-title {
    color: #333;
}

@media (max-width: 768px) {
    .toc-container {
        font-size: 90%;
        padding: 1em;
    }

    .toc-title {
        font-size: 1.1em;
    }

    .toc-hierarchical .toc-list .toc-list {
        padding-left: 1em;
    }
}

@media print {
    .toc-toggle {
        display: none;
    }

    .toc-content {
        display: block !important;
        max-height: none !important;
        opacity: 1 !important;
    }
}