/* Custom two-column layout with sidebar */

/* Align navbar with content grid */
.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

.layout-container {
    display: grid;
    grid-template-columns: minmax(0, 900px) 280px;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    justify-content: center;
}

.main-content {
    min-width: 0; /* Prevents grid blowout */
}

/* Remove max-width constraint from articles to match index page width */
article {
    max-width: none;
}

/* Mobile browse section - shows at top */
.mobile-browse {
    display: none;
    margin: 2rem 0;
    background: var(--background-secondary, #f9f9f9);
    border-radius: 8px;
    overflow: hidden;
}

.mobile-browse-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: inherit;
    transition: opacity 0.2s;
}

.mobile-browse-toggle:hover {
    opacity: 0.7;
}

.mobile-browse-toggle-icon {
    transition: transform 0.3s ease;
}

.mobile-browse-toggle[aria-expanded="true"] .mobile-browse-toggle-icon {
    transform: rotate(180deg);
}

.mobile-browse-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 1.5rem;
}

.mobile-browse-content.expanded {
    max-height: 2000px;
    padding: 0 1.5rem 1.5rem;
    transition: max-height 0.5s ease-in;
}

.mobile-browse h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mobile-browse-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.mobile-browse-section h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    opacity: 0.7;
}

.mobile-browse-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.85rem;
}

.mobile-browse-list li {
    margin-bottom: 0.4rem;
}

.mobile-browse-list a {
    text-decoration: none;
}

.mobile-browse-list a:hover {
    text-decoration: underline;
}

.mobile-browse-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.mobile-browse-tags a {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    background: var(--background-tertiary, #e8e8e8);
    border-radius: 1rem;
    font-size: 0.75rem;
    text-decoration: none;
}

.mobile-browse-tags a:hover {
    background: var(--background-body, #ddd);
}

/* Sidebar Styles */
.sidebar {
    padding: 2rem 0;
    position: sticky;
    top: 2rem;
    height: fit-content;
    max-height: calc(100vh - 8rem);
    overflow-y: auto;
    z-index: 1;
    margin-bottom: 4rem;
}

/* Ensure footer appears above sticky sidebar */
footer {
    position: relative;
    z-index: 10;
    background: var(--background-color);
}

/* Ensure back to top button appears above footer */
#button-container {
    z-index: 100 !important;
}

/* Ensure article navigation appears above sidebar */
.article-navigation {
    position: relative;
    z-index: 10;
    background: var(--background-color);
    /* Override full-width negative margins to prevent sidebar overlap */
    margin-left: 0 !important;
    margin-right: 0 !important;
}

.sidebar-section {
    margin-bottom: 2.5rem;
}

.sidebar-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.8;
}

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

.sidebar-list li {
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.sidebar-list a {
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
}

.sidebar-list a:hover {
    text-decoration: underline;
}

.sidebar-date {
    display: block;
    font-size: 0.75rem;
    opacity: 0.6;
    margin-top: 0.25rem;
}

.sidebar-count {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-left: 0.25rem;
}

/* Tags in sidebar */
.sidebar-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.sidebar-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--background-secondary, #f0f0f0);
    border-radius: 1rem;
    font-size: 0.8rem;
    text-decoration: none;
    transition: background 0.2s;
}

.sidebar-tag:hover {
    background: var(--background-tertiary, #e0e0e0);
}

/* Responsive: Show mobile browse, hide sidebar */
@media (max-width: 1024px) {
    .layout-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        max-width: 800px;
    }

    .sidebar {
        display: none;
    }

    .mobile-browse {
        display: block;
    }
}

/* Extra small screens - single column browse */
@media (max-width: 480px) {
    .mobile-browse-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* Dark mode support */
[data-theme="dark"] .mobile-browse {
    background: var(--background-secondary, #2a2a2a);
}

[data-theme="dark"] .mobile-browse-tags a {
    background: var(--background-tertiary, #3a3a3a);
}

[data-theme="dark"] .mobile-browse-tags a:hover {
    background: var(--background-body, #4a4a4a);
}

[data-theme="dark"] .sidebar-tag {
    background: var(--background-secondary, #2a2a2a);
}

[data-theme="dark"] .sidebar-tag:hover {
    background: var(--background-tertiary, #3a3a3a);
}

/* Support for system dark mode preference */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .mobile-browse {
        background: var(--background-secondary, #2a2a2a);
    }

    :root:not([data-theme="light"]) .mobile-browse-tags a {
        background: var(--background-tertiary, #3a3a3a);
    }

    :root:not([data-theme="light"]) .mobile-browse-tags a:hover {
        background: var(--background-body, #4a4a4a);
    }

    :root:not([data-theme="light"]) .sidebar-tag {
        background: var(--background-secondary, #2a2a2a);
    }

    :root:not([data-theme="light"]) .sidebar-tag:hover {
        background: var(--background-tertiary, #3a3a3a);
    }
}

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

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

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color, #ccc);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary, #999);
}