/* Naver-inspired blog style */

:root {
    --color-primary: #03C75A;
    --color-primary-dark: #009f47;
    --color-primary-light: #e8f7ef;
    --text-primary: #080808;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --bg-page: #f5f6f8;
    --bg-card: #ffffff;
    --border-color: #e8e8e8;
    --radius-card: 16px;
    --radius-sm: 8px;
    --shadow-card: 0 4px 6px rgba(50, 50, 93, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-card-hover: 0 8px 16px rgba(50, 50, 93, 0.1), 0 3px 6px rgba(0, 0, 0, 0.06);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-page);
    line-height: 1.7;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

/* Header */
.site-header {
    background-color: var(--bg-card);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .header-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.site-header .site-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    white-space: nowrap;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 4px;
}

.site-header .site-logo {
    height: 36px;
    width: 42px;
    border-radius: 0;
}

.site-header .site-title:hover {
    opacity: 0.85;
    text-decoration: none;
}

.site-header nav ul {
    list-style: none;
    display: flex;
    gap: 8px;
    margin: 0;
    padding: 0;
}

.site-header nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    padding: 8px 12px;
    border-radius: 20px;
    transition: all 0.15s ease;
}

.site-header nav a:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    text-decoration: none;
}

.site-header .header-nav-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Header search */
.header-search {
    display: flex;
    align-items: center;
}

.header-search input[type="text"] {
    box-sizing: border-box;
    height: 32px;
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    padding: 0 12px;
    font-size: 13px;
    width: 180px;
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
    margin: 0;
}

.header-search input[type="text"]:focus {
    border-color: var(--color-primary);
}

.header-search input[type="hidden"] {
    display: none;
}

.search-btn {
    box-sizing: border-box;
    height: 32px;
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: transparent;
    padding: 0 10px;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 13px;
    transition: color 0.2s, border-color 0.2s;
    display: flex;
    align-items: center;
    margin: 0;
}

.search-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.header-search:focus-within .search-btn {
    border-color: var(--color-primary);
}

/* Main content */
.container {
    max-width: 960px;
    margin: 24px auto;
    padding: 0 24px;
}

.content-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-card);
    padding: 40px 48px;
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.2s ease;
    margin-bottom: 24px;
}

/* Typography */
h1 {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: none;
    letter-spacing: -0.5px;
    position: relative;
}

h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 48px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 2px;
}

h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 36px;
    margin-bottom: 14px;
    padding-left: 14px;
    border-left: 3px solid var(--color-primary);
    letter-spacing: -0.3px;
}

h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 28px;
    margin-bottom: 10px;
}

h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-top: 24px;
    margin-bottom: 8px;
}

p {
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.8;
    word-break: keep-all;
}

/* Links */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all 0.15s ease;
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Table of Contents (AsciiDoc :toc:) */
#toc.toc {
    margin: 32px 0;
    padding: 24px 28px;
    background-color: var(--bg-page);
    border-radius: 12px;
    border-bottom: 2px solid var(--border-color);
}

#toc.toc #toctitle {
    font-size: 15px;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 12px;
}

#toc.toc ul {
    margin-bottom: 0;
    padding-left: 20px;
}

#toc.toc li {
    margin-bottom: 4px;
    line-height: 1.6;
}

#toc.toc a {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 700;
}

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

/* Lists */
ul, ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

li {
    margin-bottom: 8px;
    color: var(--text-primary);
    line-height: 1.5;
}

li::marker {
    color: var(--color-primary);
}

li p {
    margin-bottom: 0;
}

/* Code block with title (AsciiDoc listingblock) */
.listingblock {
    margin-bottom: 20px;
}

.listingblock .title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-secondary);
    background-color: #f0f0f0;
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    padding: 6px 16px;
    margin-bottom: 0;
}

.listingblock pre {
    margin-top: 0;
    margin-bottom: 0;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

/* Code */
code {
    background-color: #f1f3f5;
    color: #e44d2a;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 13px;
    font-family: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
}

pre {
    background-color: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    overflow-x: auto;
    margin-bottom: 20px;
}

pre code {
    background: none;
    color: var(--text-primary);
    padding: 0;
    font-size: 14px;
    line-height: 1.7;
}

/* highlight.js monokai-sublime compatibility */
.hljs {
    background: transparent;
    padding: 0;
}

/* Blockquote */
blockquote {
    border: none;
    background-color: var(--color-primary-light);
    padding: 20px 24px;
    margin: 20px 0;
    border-radius: 12px;
    position: relative;
    padding-left: 48px;
}

blockquote::before {
    content: '\201C';
    position: absolute;
    left: 18px;
    top: 10px;
    font-size: 32px;
    color: var(--color-primary);
    font-weight: 800;
    line-height: 1;
}

blockquote p {
    color: #333333;
    margin-bottom: 0;
    font-size: 14px;
}

blockquote .paragraph + .paragraph {
    margin-top: 12px;
}

/* Table */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 20px 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

th {
    background-color: var(--color-primary);
    color: #ffffff;
    font-weight: 700;
    padding: 12px 20px;
    text-align: left;
    font-size: 14px;
    letter-spacing: -0.2px;
}

td {
    padding: 12px 20px;
    border-bottom: 1px solid #f0f0f0;
    font-size: 14px;
    color: var(--text-primary);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: var(--color-primary-light);
}

/* Horizontal rule */
hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 32px 0;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 16px 0;
}

/* Strong / Bold */
strong {
    font-weight: 800;
    color: var(--text-primary);
}

/* Post meta */
.post-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.post-date {
    font-size: 13px;
    color: var(--text-tertiary);
}

.post-description {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 0;
}

/* Post tags */
.post-tags {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.post-tags a {
    display: inline-block;
    background-color: var(--bg-page);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 20px;
    transition: all 0.15s ease;
}

.post-tags a:hover {
    background-color: var(--color-primary-light);
    text-decoration: none;
}

/* Post navigation (prev/next post) */
.post-nav {
    margin-top: 24px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.post-nav a {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 700;
    padding: 12px 20px;
    background-color: var(--bg-card);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card);
    transition: all 0.15s ease;
    max-width: 48%;
    display: inline-block;
}

.post-nav a:hover {
    color: var(--color-primary);
    text-decoration: none;
    box-shadow: var(--shadow-card-hover);
}

.post-nav .nav-prev a::before {
    content: '\2190 ';
}

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

.post-nav .nav-next a::after {
    content: ' \2192';
}

/* Pagination (index pages) */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 32px;
    list-style: none;
    padding: 0;
}

.pagination li {
    margin: 0;
}

.pagination a,
.pagination .page-info {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--bg-card);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card);
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
    transition: all 0.15s ease;
    text-decoration: none;
}

.pagination a:hover {
    color: var(--color-primary);
    box-shadow: var(--shadow-card-hover);
    text-decoration: none;
}

.pagination a.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.pagination .page-info {
    color: var(--color-primary);
    cursor: default;
}

/* Post content area */
#content img {
    max-width: 100%;
}

#content p a,
#content ul li a {
    border-bottom: dotted 2px rgba(3, 199, 90, 0.3);
}

#content p a:hover {
    border-bottom-color: transparent;
}

/* Post list items (content-list) */
.content-card .post-list-item {
    padding-bottom: 24px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.content-card .post-list-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.content-card .post-list-item h2 {
    margin-top: 0;
    border-left: none;
    padding-left: 0;
}

.content-card .post-list-item h2 a {
    color: var(--text-primary);
    font-weight: 800;
}

.content-card .post-list-item h2 a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.continue-reading {
    display: inline-block;
    padding: 8px 20px;
    background-color: var(--color-primary);
    color: #ffffff;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
    transition: all 0.15s ease;
    margin-top: 12px;
}

.continue-reading:hover {
    background-color: var(--color-primary-dark);
    color: #ffffff;
    text-decoration: none;
}

/* Posts page */
.archive-section h4 {
    color: var(--color-primary);
    font-size: 15px;
    font-weight: 800;
    margin-top: 28px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-primary-light);
}

.archive-section ul {
    list-style: none;
    padding-left: 0;
}

.archive-section li {
    padding: 8px 0;
    border-bottom: 1px solid #f5f5f5;
    margin-bottom: 0;
}

.archive-section li:last-child {
    border-bottom: none;
}

.archive-section .archive-date {
    color: var(--text-tertiary);
    font-size: 13px;
    margin-right: 12px;
    font-weight: 700;
}

.archive-section a {
    color: var(--text-primary);
    font-weight: 700;
}

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

/* Recent posts list (index page) */
.recent-posts-title {
    margin-top: 0;
    margin-bottom: 16px;
    font-size: 16px;
    font-weight: 800;
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-primary-light);
    padding-bottom: 8px;
    border-left: none;
    padding-left: 0;
}

.recent-post-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.recent-post-list li {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid #f5f5f5;
}

.recent-post-list li:last-child {
    border-bottom: none;
}

.recent-post-date {
    flex-shrink: 0;
    color: var(--text-tertiary);
    font-size: 13px;
    font-weight: 700;
}

.recent-post-list a {
    color: var(--text-primary);
    font-weight: 700;
    text-decoration: none;
}

.recent-post-list a:hover {
    color: var(--color-primary);
}

.all-posts-link {
    display: block;
    text-align: right;
    margin-top: 12px;
    font-size: 13px;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.all-posts-link:hover {
    color: var(--color-primary-dark);
    text-decoration: none;
}

.post-tags-inline a {
    color: var(--text-tertiary);
    font-size: 12px;
    font-weight: 400;
    margin-left: 4px;
}

.post-tags-inline a:hover {
    color: var(--color-primary);
}

/* Tags page */
.tags-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tags-list li {
    margin: 0;
}

.tags-list a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.15s ease;
}

.tags-list a:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    text-decoration: none;
}

.tags-list .tag-count {
    background-color: var(--color-primary);
    color: #ffffff;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 700;
}

/* Tag page (posts by tag) */
.tag-page-title {
    margin-bottom: 24px;
}

/* Social Share Buttons */
#social-share {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

#social-share ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

#social-share ul li {
    padding: 0;
    margin: 0;
    list-style: none;
}

#social-share ul li::marker {
    content: none;
}

#social-share ul li p {
    display: none;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: 15px;
    transition: opacity 0.2s ease;
}

.share-btn:hover {
    opacity: 0.85;
    color: #ffffff;
    text-decoration: none;
}

.share-btn.twitter     { background: #1DA1F2; }
.share-btn.facebook    { background: #1877F2; }
.share-btn.linkedin    { background: #0A66C2; }
.share-btn.reddit      { background: #FF4500; }
.share-btn.email       { background: var(--text-secondary); }

/* Comments (giscus) */
.comments {
    margin-top: 24px;
    background-color: var(--bg-card);
    border-radius: var(--radius-card);
    padding: 40px 48px;
    box-shadow: var(--shadow-card);
}

/* Reading time */
.eta {
    font-size: 13px;
    color: var(--text-tertiary);
}

.eta::before {
    content: '\00b7 ';
}

/* Site footer */
.site-footer {
    max-width: 960px;
    margin: 32px auto 48px;
    padding: 24px;
    text-align: center;
    color: var(--text-tertiary);
    font-size: 12px;
    letter-spacing: -0.2px;
}

.site-footer a {
    color: var(--text-tertiary);
}

.site-footer a:hover {
    color: var(--color-primary);
}

/* Back to top */
#back-to-top {
    background-color: var(--bg-card);
    bottom: 20px;
    color: var(--text-tertiary);
    display: none;
    position: fixed;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    box-shadow: var(--shadow-card);
    text-align: center;
    line-height: 40px;
    font-size: 16px;
    transition: all 0.15s ease;
    z-index: 99;
}

#back-to-top:hover {
    color: var(--color-primary);
    box-shadow: var(--shadow-card-hover);
    text-decoration: none;
}

#back-to-top.btt-fade-out {
    opacity: .5;
}

/* Responsive */
@media (max-width: 768px) {
    .content-card {
        padding: 24px 20px;
        border-radius: 0;
    }

    .container {
        padding: 0;
        margin: 16px auto;
    }

    .site-header .header-inner {
        padding: 8px 16px;
        flex-direction: column;
        align-items: flex-start;
        height: auto;
        gap: 6px;
    }

    .site-header .header-nav-row {
        width: 100%;
        justify-content: space-between;
    }

    .site-header nav ul {
        gap: 4px;
    }

    .site-header nav a {
        font-size: 13px;
        padding: 6px 8px;
    }

    .header-search input[type="text"] {
        width: 80px;
        height: 28px;
        font-size: 12px;
        padding: 0 8px;
    }

    .search-btn {
        height: 28px;
        padding: 0 8px;
        font-size: 12px;
    }

    h1 { font-size: 22px; }
    h2 { font-size: 18px; }

    .post-nav {
        flex-direction: column;
    }

    .post-nav a {
        max-width: 100%;
    }

    .comments {
        padding: 24px 20px;
        border-radius: 0;
    }

    .pagination {
        gap: 8px;
    }

    .pagination a,
    .pagination .page-info {
        padding: 8px 14px;
        font-size: 13px;
    }
}