/* ================================================
   NEUTRAL SCIENCE THEME — Hexo Ayer
   Place this file at: blog/source/css/custom.css
   Then set in _config.ayer.yml:  custom_css: /css/custom.css
   ================================================ */

/* ---------- VARIABLES ---------- */
:root {
  --orange:       #111111;
  --orange-light: #333333;
  --orange-dim:   #666666;
  --bg-page:      #f7f8fa;
  --bg-surface:   #ffffff;
  --bg-card:      #ffffff;
  --bg-hover:     #eef1f4;
  --border:       #d9dfe5;
  --text-main:    #111111;
  --text-muted:   #5f6b76;
  --text-code:    #111111;
}

/* ---------- BASE ---------- */
*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  background-color: var(--bg-page) !important;
  color: var(--text-main) !important;
  font-family: Aptos, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-page); }
::-webkit-scrollbar-thumb { background: #b8c2cc; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #8e9aa6; }

/* ---------- LINKS ---------- */
a, a:visited {
  color: var(--text-main) !important;
  text-decoration: none;
  transition: color 0.2s;
}
a:hover {
  color: var(--text-muted) !important;
  text-decoration: underline;
}

/* ---------- HEADER / NAV ---------- */
#header,
.header,
header,
#navbar,
.navbar {
  background-color: #ffffff !important;
  border-bottom: 1px solid var(--border) !important;
  box-shadow: 0 1px 12px rgba(31, 41, 51, 0.05) !important;
}

.blog-title a,
.site-title a,
#header .logo a {
  color: var(--text-main) !important;
  font-weight: 700;
  letter-spacing: 1px;
}

.blog-subtitle,
.site-subtitle {
  color: var(--text-muted) !important;
}

nav a,
.nav-item a,
.menu a,
#nav a {
  color: var(--text-main) !important;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

nav a:hover,
.nav-item a:hover,
.menu a:hover {
  color: var(--text-main) !important;
  background: var(--bg-hover) !important;
  text-decoration: none !important;
}

/* ---------- MAIN CONTENT AREA ---------- */
#main,
.main,
.container,
#content,
.content {
  background-color: var(--bg-page) !important;
}

/* ---------- POST CARDS ---------- */
.post,
article,
.post-card,
.article-entry,
.post-block {
  background-color: var(--bg-card) !important;
  border: 1px solid var(--border) !important;
  border-radius: 8px !important;
  padding: 24px !important;
  margin-bottom: 24px !important;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  box-shadow: 0 4px 18px rgba(31, 41, 51, 0.04);
}

.post:hover,
article:hover,
.post-card:hover {
  border-color: var(--orange-dim) !important;
  box-shadow: 0 8px 24px rgba(31, 41, 51, 0.08) !important;
}

/* ---------- HEADINGS ---------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main) !important;
}

.post-title a,
.article-title a {
  color: var(--text-main) !important;
  font-weight: 700;
}

.post-title a:hover,
.article-title a:hover {
  color: var(--text-muted) !important;
  text-decoration: none !important;
}

/* ---------- POST META (date, author) ---------- */
.post-meta,
.article-meta,
.post-date,
.post-time {
  color: var(--text-muted) !important;
  font-size: 0.85em;
}

.post-meta i,
.post-meta .fa {
  color: var(--text-muted) !important;
}

/* ---------- TAGS ---------- */
.tag,
.tag-list-item a,
.post-tag,
.article-tag-list-item a {
  background-color: var(--bg-surface) !important;
  color: var(--text-main) !important;
  border: 1px solid var(--border) !important;
  border-radius: 4px !important;
  padding: 2px 10px !important;
  font-size: 0.8em;
  margin: 2px;
  display: inline-block;
  transition: background 0.2s;
}

.tag:hover,
.tag-list-item a:hover,
.post-tag:hover,
.article-tag-list-item a:hover {
  background-color: var(--bg-hover) !important;
  color: var(--text-main) !important;
  text-decoration: none !important;
}

/* ---------- CATEGORIES ---------- */
.category-list-item a,
.post-category a {
  color: var(--text-main) !important;
  font-weight: 600;
}

.category-list-item a:hover {
  color: var(--text-muted) !important;
}

/* ---------- SIDEBAR ---------- */
#sidebar,
.sidebar,
.side,
aside {
  background-color: #ffffff !important;
  border-left: 1px solid var(--border) !important;
  border-radius: 8px;
}

.widget-title,
.sidebar-title {
  color: var(--text-main) !important;
  border-bottom: 1px solid var(--border) !important;
  padding-bottom: 8px;
}

/* ---------- CODE & PRE ---------- */
code {
  background-color: #fafbfc !important;
  color: var(--text-code) !important;
  border: 1px solid var(--border) !important;
  border-radius: 3px;
  padding: 1px 5px;
  font-size: 0.9em;
}

pre {
  background-color: #fafbfc !important;
  border: 1px solid var(--border) !important;
  border-left: 4px solid var(--text-main) !important;
  border-radius: 6px !important;
  padding: 16px !important;
}

pre code {
  background: transparent !important;
  border: none !important;
  color: #334155 !important;
}

/* Highlight line numbers */
.gutter {
  background-color: #f8fafc !important;
  border-right: 1px solid var(--border) !important;
  color: var(--text-muted) !important;
}

/* ---------- BLOCKQUOTE ---------- */
blockquote {
  background-color: #fbfcfd !important;
  border-left: 4px solid var(--text-main) !important;
  color: var(--text-muted) !important;
  padding: 12px 16px;
  border-radius: 0 4px 4px 0;
}

/* ---------- TABLE ---------- */
table {
  border-collapse: collapse;
  width: 100%;
}

th {
  background-color: #f3f6f9 !important;
  color: var(--text-main) !important;
  border: 1px solid var(--border) !important;
  padding: 8px 12px;
}

td {
  background-color: #ffffff !important;
  color: var(--text-main) !important;
  border: 1px solid var(--border) !important;
  padding: 8px 12px;
}

tr:hover td {
  background-color: var(--bg-hover) !important;
}

/* ---------- HORIZONTAL RULE ---------- */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

/* ---------- READ MORE BUTTON ---------- */
.excerpt-link,
.read-more,
.btn,
a.btn {
  background-color: #ffffff !important;
  color: var(--text-main) !important;
  border-radius: 5px !important;
  padding: 6px 16px !important;
  font-weight: 600;
  border: 1px solid var(--border) !important;
  transition: background 0.2s;
  text-decoration: none !important;
}

.excerpt-link:hover,
.read-more:hover,
.btn:hover {
  background-color: var(--bg-hover) !important;
  color: var(--text-main) !important;
}

/* ---------- PAGINATION ---------- */
.pagination,
#page-nav {
  text-align: center;
  margin: 32px 0;
}

.pagination a,
.page-number {
  background-color: var(--bg-card) !important;
  color: var(--text-main) !important;
  border: 1px solid var(--border) !important;
  border-radius: 4px !important;
  padding: 4px 12px !important;
  margin: 2px;
  transition: all 0.2s;
}

.pagination a:hover,
.page-number:hover {
  background-color: var(--bg-hover) !important;
  color: var(--text-main) !important;
  text-decoration: none !important;
}

.pagination .current,
.page-number.current {
  background-color: var(--bg-hover) !important;
  color: var(--text-main) !important;
  border-color: var(--border) !important;
  font-weight: 700;
}

/* ---------- FOOTER ---------- */
#footer,
footer,
.footer {
  background-color: #ffffff !important;
  border-top: 1px solid var(--border) !important;
  color: var(--text-muted) !important;
  padding: 20px 0;
}

.footer a,
#footer a {
  color: var(--text-main) !important;
}

/* ---------- TOC (Table of Contents) ---------- */
#toc,
.toc,
.toc-wrapper {
  background-color: var(--bg-card) !important;
  border: 1px solid var(--border) !important;
  border-left: 3px solid var(--text-main) !important;
  border-radius: 6px;
}

.toc-item a,
.toc a {
  color: var(--text-muted) !important;
}

.toc-item a:hover,
.toc a:hover,
.toc-item.active a {
  color: var(--text-main) !important;
}

/* ---------- SEARCH BOX ---------- */
#search-input,
.search-input,
input[type="search"],
input[type="text"] {
  background-color: var(--bg-card) !important;
  color: var(--text-main) !important;
  border: 1px solid var(--border) !important;
  border-radius: 4px;
  padding: 6px 12px;
}

#search-input:focus,
.search-input:focus,
input:focus {
  border-color: var(--text-main) !important;
  outline: none;
  box-shadow: 0 0 0 2px rgba(17, 17, 17, 0.10);
}

/* ---------- ARCHIVE / CATEGORY PAGES ---------- */
.archive-year,
.archive-month-content {
  border-left: 3px solid var(--text-main) !important;
  padding-left: 16px;
}

.archive-article-date {
  color: var(--text-muted) !important;
}

/* ---------- AVATAR / PROFILE ---------- */
.avatar img,
.author-avatar img {
  border: 3px solid var(--border) !important;
  border-radius: 50%;
}

/* ---------- SELECTION ---------- */
::selection {
  background-color: rgba(17, 17, 17, 0.10);
  color: #111;
}

/* ---------- LATEX PDF PAGES ---------- */
.latex-doc__meta,
.latex-index__entry {
  margin-top: 12px;
}

.latex-doc__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.latex-doc__status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.82rem;
}

.latex-doc__status--ready {
  color: var(--text-main) !important;
  border-color: var(--border) !important;
  background: #f7f8fa;
}

.latex-doc__status--missing {
  color: #ff9c9c !important;
  border-color: #7a3232 !important;
  background: #fff3f3;
}

.latex-doc__lede,
.latex-index__lede {
  margin-top: 0;
  color: var(--text-muted) !important;
}

.latex-doc__toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 1.25rem 0;
}

.latex-doc__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--border) !important;
  background: #ffffff !important;
  color: var(--text-main) !important;
  font-weight: 700;
  text-decoration: none !important;
}

.latex-doc__button:hover {
  background: var(--bg-hover) !important;
  color: var(--text-main) !important;
}

.latex-doc__button--ghost {
  background: transparent !important;
  color: var(--text-main) !important;
}

.latex-doc__viewer {
  margin-top: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.latex-doc__viewer iframe {
  display: block;
  width: 100%;
  min-height: 82vh;
  border: 0;
  background: #fff;
}

.latex-doc__missing,
.latex-index__empty {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 10px;
  border: 1px dashed var(--border);
  background: var(--bg-surface);
  color: var(--text-muted) !important;
}

.latex-index__list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  border-top: 1px solid var(--border);
}

.latex-index__item {
  border-bottom: 1px solid var(--border);
}

.latex-index__link {
  display: block;
  padding: 14px 6px;
  color: var(--text-main) !important;
  text-decoration: none !important;
  font-weight: 600;
  transition: color 0.15s ease, background 0.15s ease, padding-left 0.15s ease;
}

.latex-index__link:hover {
  color: var(--text-main) !important;
  background: var(--bg-surface);
  padding-left: 14px;
}

/* ---------- ARTICLE GRID / BROWSING MODE ---------- */
@media (min-width: 768px) {
  .wrap,
  .outer {
    width: 100%;
    max-width: 1720px;
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

.home-post-grid .articles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 3rem;
  align-items: stretch;
  grid-auto-flow: row;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 0 0 2rem;
  box-sizing: border-box;
}

.home-post-grid .articles .article {
  padding: 0 !important;
  margin: 0 !important;
  border-bottom: none !important;
  background: transparent !important;
  box-shadow: none !important;
}

.home-post-grid .articles .article-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 26px rgba(31, 41, 51, 0.05);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  min-height: 0;
}

.home-post-grid .articles .article:hover .article-inner {
  transform: translateY(-3px);
  border-color: var(--border);
  box-shadow: 0 14px 32px rgba(31, 41, 51, 0.10);
}

.home-post-grid .articles .article-header,
.home-post-grid .articles .article-meta,
.home-post-grid .articles .article-entry,
.home-post-grid .articles .article-footer {
  padding-left: 1.7rem;
  padding-right: 1.7rem;
}

.home-post-grid .articles .article-header {
  padding-top: 1.7rem;
}

.home-post-grid .articles .article-entry {
  padding-top: 0.2rem;
  padding-bottom: 0.2rem;
  margin: 0 !important;
  border: none !important;
  background: transparent !important;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 5;
  overflow: hidden;
  line-height: 1.85;
  font-size: 1.5rem;
}

.home-post-grid .articles .article-entry img,
.home-post-grid .articles .article-entry iframe,
.home-post-grid .articles .article-entry video {
  display: none !important;
}

.home-post-grid .articles .article-footer {
  display: none;
}

.home-post-grid .articles .article-more-link {
  display: inline-block;
  align-self: flex-end;
  margin: 0.9rem 1.7rem 1.35rem 0;
  padding: 0.5rem 1rem !important;
  border: none !important;
  border-radius: 4px !important;
  background-color: var(--text-main) !important;
  color: #ffffff !important;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none !important;
}

.home-post-grid .articles .article-more-link:hover {
  background: #2b2b2b !important;
  color: #ffffff !important;
}

.home-post-grid .articles .article-title {
  font-size: 1.9rem !important;
  margin-bottom: 0.5rem !important;
  padding-left: 0 !important;
  border-left: none !important;
}

.home-post-grid .articles .article-meta {
  padding-bottom: 0.5rem;
  font-size: 1.12rem;
}

@media (max-width: 1200px) {
  .home-post-grid .articles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 0 0 1.75rem;
  }
}

@media (max-width: 768px) {
  .home-post-grid {
    padding: 0 0.75rem 1.5rem;
  }
  .home-post-grid .articles {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding: 0;
  }
}