/**
 * Blog Sidebar Navigation Styles
 * 
 * Styles for the auto-generated blog post sidebar navigation.
 * Provides a clean, hierarchical navigation structure with collapsible sections.
 */

/* Sidebar Container */
.blog-sidebar-container {
    display: none; /* Hidden by default, shown by JS if headers found */
    position: absolute;
    width: 220px;
    max-width: 220px;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    left: 0; /* Will be set by JavaScript to position in left margin */
    top: 0; /* Will be set by JavaScript to align with Introduction */
}

/* Show sidebar when active class is added */
.blog-sidebar-container.active {
    display: block;
}

/* Main Sidebar */
.blog-sidebar {
    font-family: "Times New Roman", Times, serif;
    font-size: 13px;
    line-height: 1.5em;
    color: rgba(0, 0, 0, 0.7);
    background: transparent;
    padding: 0;
    margin: 0;
    width: 100%;
    box-sizing: border-box;
}

/* Sidebar Header */
.blog-sidebar-header {
    font-family: Helvetica, Arial, sans-serif;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: rgba(0, 0, 0, 0.5);
    font-weight: 600;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

/* Navigation Lists */
.blog-sidebar-nav,
.blog-sidebar-nav-nested {
    list-style: none;
    padding: 0;
    margin: 0;
}

.blog-sidebar-nav {
    margin-top: 0;
}

.blog-sidebar-nav-nested {
    margin-left: 16px;
    margin-top: 4px;
    margin-bottom: 4px;
    padding-left: 0;
    border-left: 1px solid rgba(0, 0, 0, 0.1);
    padding-left: 12px;
}

/* Sidebar Items */
.blog-sidebar-item {
    margin: 0;
    padding: 0;
    line-height: 1.6em;
}

/* Wrapper for button and link */
.blog-sidebar-item-wrapper {
    display: flex;
    align-items: center;
    position: relative;
}

/* Toggle button for items with children */
.blog-sidebar-toggle-btn {
    background: none;
    border: none;
    padding: 4px 6px;
    margin: 0;
    cursor: pointer;
    color: rgba(0, 0, 0, 0.4);
    font-size: 10px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.blog-sidebar-toggle-btn::before {
    content: '▾';
    display: block;
    transition: transform 0.2s ease;
}

.blog-sidebar-item.collapsed .blog-sidebar-toggle-btn::before {
    transform: rotate(-90deg);
}

.blog-sidebar-toggle-btn:hover {
    color: rgba(0, 0, 0, 0.7);
    background: rgba(0, 0, 0, 0.05);
    border-radius: 3px;
}

/* Hide toggle button for items without children, but keep space for alignment */
.blog-sidebar-toggle-btn-hidden {
    visibility: hidden;
    pointer-events: none;
    /* Ensure hidden buttons take up the same space as visible ones */
    min-width: 18px; /* Approximate width of button with padding and character */
}

.blog-sidebar-toggle-btn-hidden::before {
    content: '▾';
    visibility: hidden;
}

/* Sidebar Links */
.blog-sidebar-link {
    display: block;
    flex: 1;
    color: rgba(0, 0, 0, 0.7);
    text-decoration: none;
    padding: 4px 8px 4px 4px;
    margin: 2px 0;
    border-radius: 3px;
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
}

.blog-sidebar-link:hover {
    color: rgba(0, 0, 0, 0.9);
    background: rgba(0, 0, 0, 0.05);
}

/* Active Link */
.blog-sidebar-link.active {
    color: rgba(0, 0, 0, 0.9);
    font-weight: 600;
    background: rgba(0, 0, 0, 0.08);
}

.blog-sidebar-link.active::before {
    content: '';
    position: absolute;
    left: -4px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 0 2px 2px 0;
}

/* Collapsed nested lists */
.blog-sidebar-item.collapsed .blog-sidebar-nav-nested {
    display: none;
}

/* Sticky positioning - applied to container when scrolled */
.blog-sidebar-container.sticky {
    position: fixed !important;
    top: 20px !important;
    z-index: 100;
    /* left will be set by JavaScript to maintain same position in left margin */
    width: 220px;
    max-width: 220px;
}

.blog-sidebar-sticky {
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    overflow-x: hidden;
    /* Keep visual styling the same as normal sidebar - transparent, no borders/shadows */
    background: transparent;
    padding: 0;
    width: 100%;
}

/* Scrollbar styling for sticky sidebar - keep minimal to match normal sidebar */
.blog-sidebar-sticky::-webkit-scrollbar {
    width: 6px;
}

.blog-sidebar-sticky::-webkit-scrollbar-track {
    background: transparent;
}

.blog-sidebar-sticky::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

.blog-sidebar-sticky::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

/* Responsive Design */
@media screen and (max-width: 1224px) {
    /* Hide sidebar when page width is smaller than 1225px */
    /* JavaScript will handle positioning for larger screens */
    .blog-sidebar-container.active {
        display: none !important;
    }
}

@media screen and (max-width: 700px) {
    .blog-sidebar-container {
        display: none !important;
    }
}

/* Level-specific styling */
.blog-sidebar-item[data-level="1"] .blog-sidebar-link {
    font-size: 14px;
    font-weight: 600;
    margin-top: 8px;
    margin-bottom: 4px;
}

.blog-sidebar-item[data-level="2"] .blog-sidebar-link {
    font-size: 13px;
    font-weight: 500;
}

.blog-sidebar-item[data-level="3"] .blog-sidebar-link {
    font-size: 12px;
    font-weight: normal;
    color: rgba(0, 0, 0, 0.6);
}

/* Smooth transitions */
.blog-sidebar-nav-nested {
    transition: opacity 0.2s ease;
}

.blog-sidebar-item.collapsed .blog-sidebar-nav-nested {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
}