/* ============================================
   BLOG TOC SIDEBAR — Sticky Table of Contents
   ============================================ */

.blog-layout {
    display: flex;
    gap: var(--space-10);
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-12) var(--space-6);
    position: relative;
}

.blog-content-main {
    flex: 1;
    min-width: 0;
    max-width: 780px;
}

/* ========== SIDEBAR TOC ========== */
.blog-toc-wrapper {
    width: 260px;
    flex-shrink: 0;
    display: none;
}

.blog-toc-sidebar {
    position: sticky;
    top: calc(var(--navbar-height, 80px) + 24px);
    max-height: calc(100vh - var(--navbar-height, 80px) - 48px);
    overflow-y: auto;
    padding: var(--space-5);
    background: var(--bg-card);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius-xl);
    scrollbar-width: thin;
    scrollbar-color: var(--border-dark) transparent;
}

.blog-toc-sidebar::-webkit-scrollbar {
    width: 4px;
}

.blog-toc-sidebar::-webkit-scrollbar-thumb {
    background: var(--border-dark);
    border-radius: 2px;
}

.blog-toc-header {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-pink);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--border-dark);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

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

.blog-toc-list li {
    margin: 0;
    padding: 0;
}

.blog-toc-list a {
    display: block;
    padding: var(--space-2) var(--space-3);
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--text-xs);
    line-height: 1.4;
    border-radius: var(--radius-md);
    border-left: 2px solid transparent;
    transition: all var(--transition-fast);
    position: relative;
}

.blog-toc-list a:hover {
    color: var(--text-secondary);
    background: rgba(255,255,255,0.03);
}

.blog-toc-list li.active > a {
    color: var(--accent-pink);
    background: rgba(201,184,190,0.08);
    border-left-color: var(--accent-pink);
    font-weight: var(--font-medium);
}

/* H3 sub-items indent */
.blog-toc-list .toc-h3 {
    padding-left: var(--space-6);
}

.blog-toc-list .toc-h3 a {
    font-size: 0.7rem;
}

/* ========== PROGRESS BAR ========== */
.progress-read {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--gradient-main);
    z-index: 1000;
    transition: width 0.1s ease;
}

/* ========== RESPONSIVE ========== */
@media (min-width: 1024px) {
    .blog-toc-wrapper {
        display: block;
    }

    .blog-content-main {
        max-width: 780px;
    }

    .toc-inline {
        display: none !important;
    }
}

@media (max-width: 1023px) {
    .blog-layout {
        flex-direction: column;
        padding: var(--space-8) var(--space-4);
    }

    .blog-content-main {
        max-width: 100%;
    }

    .blog-toc-wrapper {
        display: none;
    }

    /* Keep inline TOC for mobile */
    .toc-inline {
        display: block;
    }
}