/* Table of Contents Styles */
.table-of-contents {
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.1), rgba(67, 233, 123, 0.1));
    border: 1px solid rgba(67, 233, 123, 0.3);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 2rem 0;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.toc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-of-contents h3 {
    margin: 0;
    color: var(--accent);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toc-toggle {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    padding: 0.5rem;
    font-size: 1rem;
    transition: transform 0.3s ease;
    display: none; /* Hidden by default, shown on mobile */
}

.table-of-contents ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: max-height 0.3s ease-out, opacity 0.2s ease-out;
}

.table-of-contents li {
    margin: 0;
    display: block;
    width: 100%;
}

.table-of-contents a {
    color: var(--text);
    text-decoration: none;
    padding: 0.4rem 0.6rem;
    display: block;
    border-radius: 4px;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
    font-size: 0.95rem;
}

.table-of-contents a:hover {
    color: var(--accent);
    background-color: rgba(67, 233, 123, 0.1);
    padding-left: 1rem;
    border-left-color: var(--accent);
    transform: translateX(4px);
}

.toc-h1 { font-weight: 600; }
.toc-h2 { padding-left: 1rem; }
.toc-h3 { padding-left: 2rem; }
.toc-h4,
.toc-h5,
.toc-h6 { 
    padding-left: 3rem;
    opacity: 0.8;
}

/* Mobile Styles */
@media (max-width: 768px) {
    .table-of-contents {
        background: linear-gradient(135deg, rgba(33, 150, 243, 0.15), rgba(67, 233, 123, 0.15));
        margin: 1rem -0.5rem;
        border-radius: var(--border-radius);
        padding: 1rem;
    }

    .toc-toggle {
        display: block;
    }

    .table-of-contents.collapsed ul {
        max-height: 0;
        opacity: 0;
        overflow: hidden;
        margin: 0;
        padding: 0;
    }

    .table-of-contents:not(.collapsed) ul {
        margin-top: 1rem;
    }

    .table-of-contents a {
        padding: 0.5rem;
        font-size: 0.9rem;
    }

    .toc-h2 { padding-left: 0.75rem; }
    .toc-h3 { padding-left: 1.5rem; }
    .toc-h4,
    .toc-h5,
    .toc-h6 { 
        padding-left: 2.25rem;
    }
}

/* Scrollbar Styling */
.table-of-contents::-webkit-scrollbar {
    width: 6px;
}

.table-of-contents::-webkit-scrollbar-track {
    background: transparent;
}

.table-of-contents::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 3px;
}

.table-of-contents::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}