@charset "UTF-8";

/* ==========================================
   Sidebar
========================================== */

.sidebar-area {
    width: 100%;
    padding: var(--space-5);

    background-color: var(--bg-sub);
    border-radius: var(--radius-md);
}


/* ==========================================
   Sidebar Section
========================================== */

.sidebar-section {
    width: 100%;
}

.sidebar-section + .sidebar-section {
    margin-top: var(--space-7);
}


/* ==========================================
   Sidebar Heading
========================================== */

.sidebar-heading {
    position: relative;

    margin: 0 0 var(--space-4);
    padding-left: var(--space-3);

    font-size: var(--font-lg);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-tight);
    color: var(--text-main);
}

.sidebar-heading::before {
    content: "";

    position: absolute;
    top: 50%;
    left: 0;

    width: 2px;
    height: 1.1em;

    background-color: var(--accent-beige);
    border-radius: var(--radius-full);

    transform: translateY(-50%);
}


/* ==========================================
   Site Contents
========================================== */

.sidebar-contents {
    width: 100%;
}

.sidebar-contents-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);

    margin: 0;
    padding: 0;

    list-style: none;
}

.sidebar-contents-item {
    width: 100%;
}

.sidebar-contents-link {
    display: block;
    width: 100%;

    padding: var(--space-2) var(--space-3);

    font-family: var(--font-sans);
    font-size: var(--font-sm);
    line-height: 1.6;
    color: var(--text-sub);

    border-radius: var(--radius-sm);

    transition:
        color var(--transition-base),
        background-color var(--transition-base),
        opacity var(--transition-base);
}

.sidebar-contents-link:hover {
    color: var(--text-main);
    background-color: var(--hover-soft);
    opacity: 1;
}

.sidebar-contents-link:focus-visible {
    outline: 2px solid var(--focus-color);
    outline-offset: 3px;
}


/* ==========================================
   Sidebar Table of Contents
========================================== */

.sidebar-toc {
    width: 100%;
}

.sidebar-toc-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);

    margin: 0;
    padding: 0;

    list-style: none;
}

.sidebar-toc-item {
    width: 100%;
}


/* ------------------------------------------
   TOC Link
------------------------------------------ */

.sidebar-toc-link {
    display: block;
    width: 100%;

    padding: var(--space-2) var(--space-3);

    font-family: var(--font-sans);
    font-size: var(--font-sm);
    line-height: 1.6;
    color: var(--text-sub);

    border-left: 1px solid var(--border-color);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;

    transition:
        color var(--transition-base),
        background-color var(--transition-base),
        border-color var(--transition-base),
        opacity var(--transition-base);
}

.sidebar-toc-link:hover {
    color: var(--text-main);
    background-color: var(--hover-soft);
    border-left-color: var(--accent-beige);
    opacity: 1;
}

.sidebar-toc-link:focus-visible {
    outline: 2px solid var(--focus-color);
    outline-offset: 3px;
}


/* ------------------------------------------
   TOC h3
------------------------------------------ */

.sidebar-toc-item-h3 .sidebar-toc-link {
    padding-left: var(--space-6);

    font-size: var(--font-xs);
}


/* ------------------------------------------
   TOC Empty
------------------------------------------ */

.sidebar-toc-empty {
    padding: var(--space-2) var(--space-3);

    font-family: var(--font-sans);
    font-size: var(--font-xs);
    line-height: var(--line-height-base);
    color: var(--text-sub);
}


/* ==========================================
   Related Pages
========================================== */

.sidebar-related-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);

    margin: 0;
    padding: 0;

    list-style: none;
}

.sidebar-related-item {
    width: 100%;
}

.sidebar-related-link {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);

    width: 100%;
    padding: var(--space-3);

    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);

    transition:
        background-color var(--transition-base),
        border-color var(--transition-base),
        transform var(--transition-base),
        opacity var(--transition-base);
}

.sidebar-related-link:hover {
    background-color: var(--hover-soft);
    border-color: var(--accent-beige);
    transform: translateY(-1px);
    opacity: 1;
}

.sidebar-related-link:focus-visible {
    outline: 2px solid var(--focus-color);
    outline-offset: 3px;
}

.sidebar-related-title {
    font-family: var(--font-sans);
    font-size: var(--font-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    color: var(--text-main);
}

.sidebar-related-text {
    font-family: var(--font-sans);
    font-size: var(--font-xs);
    line-height: var(--line-height-base);
    color: var(--text-sub);
}


/* ==========================================
   Categories
========================================== */

.sidebar-category-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);

    margin: 0;
    padding: 0;

    list-style: none;
}

.sidebar-category-item {
    width: 100%;
}

.sidebar-category-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);

    width: 100%;
    padding: var(--space-2) var(--space-3);

    font-family: var(--font-sans);
    font-size: var(--font-sm);
    line-height: 1.6;
    color: var(--text-sub);

    border-radius: var(--radius-sm);

    transition:
        color var(--transition-base),
        background-color var(--transition-base),
        opacity var(--transition-base);
}

.sidebar-category-link:hover {
    color: var(--text-main);
    background-color: var(--hover-soft);
    opacity: 1;
}

.sidebar-category-link:focus-visible {
    outline: 2px solid var(--focus-color);
    outline-offset: 3px;
}

.sidebar-category-name {
    min-width: 0;

    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sidebar-category-count {
    flex: 0 0 auto;

    min-width: 24px;

    font-size: var(--font-xs);
    line-height: 1.4;
    text-align: right;
    color: var(--text-sub);
}


/* ==========================================
   New Articles
========================================== */

.sidebar-popular-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);

    margin: 0;
    padding: 0;

    list-style: none;
}

.sidebar-popular-item {
    width: 100%;
}

.sidebar-popular-link {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);

    width: 100%;
    padding: var(--space-3);

    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);

    transition:
        background-color var(--transition-base),
        border-color var(--transition-base),
        transform var(--transition-base),
        opacity var(--transition-base);
}

.sidebar-popular-link:hover {
    background-color: var(--hover-soft);
    border-color: var(--accent-beige);
    transform: translateY(-1px);
    opacity: 1;
}

.sidebar-popular-link:focus-visible {
    outline: 2px solid var(--focus-color);
    outline-offset: 3px;
}


/* ------------------------------------------
   New Article Rank
------------------------------------------ */

.sidebar-popular-rank {
    display: flex;
    align-items: center;
    justify-content: center;

    flex: 0 0 auto;

    width: 24px;
    height: 24px;

    font-family: var(--font-sans);
    font-size: var(--font-xs);
    font-weight: var(--font-weight-medium);
    line-height: 1;

    color: var(--bg-card);
    background-color: var(--accent-beige);

    border-radius: var(--radius-full);
}


/* ------------------------------------------
   New Article Content
------------------------------------------ */

.sidebar-popular-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);

    min-width: 0;
}

.sidebar-popular-title {
    display: -webkit-box;

    overflow: hidden;

    font-size: var(--font-sm);
    line-height: 1.6;
    color: var(--text-main);

    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.sidebar-popular-date {
    font-family: var(--font-sans);
    font-size: var(--font-xs);
    line-height: var(--line-height-tight);
    color: var(--text-sub);
}


/* ==========================================
   Empty
========================================== */

.sidebar-empty {
    margin: 0;

    padding: var(--space-3);

    font-family: var(--font-sans);
    font-size: var(--font-xs);
    line-height: var(--line-height-base);
    color: var(--text-sub);

    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}


/* ==========================================
   Tablet / PC
========================================== */

@media (min-width: 768px) {

    .sidebar-area {
        padding: var(--space-5);
    }

    .sidebar-heading {
        font-size: var(--font-lg);
    }

}


/* ==========================================
   Large PC
========================================== */

@media (min-width: 1024px) {

    .sidebar-area {
        width: var(--sidebar-width);
    }

}