/* Table of Contents - Sidebar Layout */

/* Desktop: Right sidebar */
/* Desktop: Right sidebar */
@media (min-width: 1100px) {

    /* Only apply grid if TOC is present */
    .post.has-toc {
        display: grid;
        grid-template-columns: 1fr 300px;
        /* Fluid 1fr */
        /* Flexible content, fixed sidebar */
        gap: 5rem;
        /* Wider gap for cleaner look */
        /* More breathing room */
        max-width: 1400px !important;
        /* Force override */
        width: 100%;
    }

    .post-main {
        min-width: 0;
    }

    .toc {
        position: sticky;
        top: 2rem;
        align-self: start;
        max-height: calc(100vh - 4rem);
        margin: 0;
    }
}

/* TOC Base Styles */
.toc {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    /* Slightly sharper corners */
    padding: 0;
    margin: 2rem 0;
    overflow: hidden;
}

.toc-header {
    background: #52525b;
    /* Darker slate gray (zinc-600) to match reference */
    color: white;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    transition: background 0.2s;
}

.toc-header:hover {
    background: #3f3f46;
    /* darker on hover */
}

.toc-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.toc-header h2 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    flex: 1;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.toc-chevron {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
    opacity: 0.8;
}

.toc.collapsed .toc-chevron {
    transform: rotate(-90deg);
}

.toc-content {
    padding: 1rem;
    max-height: 70vh;
    overflow-y: auto;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    /* Ensure contrast with header if using themes */
}

.toc-content nav#TableOfContents {
    all: unset;
    display: block;
}

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

.toc-content>nav>ul {
    padding-left: 0;
}

.toc-content ul ul {
    padding-left: 1rem;
    margin-top: 0.25rem;
    border-left: 1px solid var(--border);
    margin-left: 0.25rem;
}

.toc-content li {
    margin: 0.4rem 0;
}

.toc-content a {
    color: var(--text-secondary);
    text-decoration: none;
    display: block;
    padding: 0.2rem 0;
    transition: color 0.15s;
    line-height: 1.4;
    font-size: 0.85rem;
}

.toc-content a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

/* Scrollbar styling for TOC */
.toc-content::-webkit-scrollbar {
    width: 6px;
}

.toc-content::-webkit-scrollbar-thumb {
    background-color: var(--border);
    border-radius: 3px;
}

/* Mobile/Tablet: Top of page and collapsed */
@media (max-width: 1099px) {
    .post {
        display: flex;
        flex-direction: column;
    }

    .toc {
        width: 100%;
        margin-bottom: 2rem;
        order: -1;
        /* Move to top */
    }
}

/* Post Styles */
.reading-time {
    color: var(--text-muted);
    margin-left: 0.5rem;
}

/* Default post behavior (wide) */
.post {
    width: 100%;
    margin: 0 auto;
}

/* Constrain ONLY posts without TOC */
.post:not(.has-toc) {
    max-width: 800px;
}

.post-header {
    margin-bottom: 2rem;
    text-align: center;
}

.post-header h1 {
    margin-bottom: 0.5rem;
}

.post-meta {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.post-content {
    margin-top: 2rem;
}

.post-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    gap: 1rem;
}

.post-nav-prev,
.post-nav-next {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 5px;
    transition: all 0.2s;
    max-width: 45%;
}

.post-nav-prev:hover,
.post-nav-next:hover {
    background: var(--bg-secondary);
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.post-nav-next {
    margin-left: auto;
    text-align: right;
}