/* 甲鱼AI日报 — Custom Styles (Round 2) */

/* ===== Design Tokens ===== */
:root {
  --primary:        #e67e22;
  --primary-hover:  #cf6d17;
  --primary-pale:   #fdf6ee;
  --bg:             #f4f5f7;
  --surface:        #ffffff;
  --text:           #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-muted:     #8c8c8c;
  --border:         #e8e8e8;
  --border-light:   #f0f0f0;
  --radius:         8px;
  --radius-sm:      4px;
  --shadow-sm:      0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-card:    0 1px 3px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.03);

  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC",
               "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei",
               "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono",
               Consolas, "Courier New", monospace;

  --text-base: 16px;
  --leading:   1.85;
}

/* ===== Base & Theme Overrides ===== */
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: var(--text-base);
  line-height: var(--leading);
  border-top-color: var(--primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Override theme link color globally */
a { color: var(--primary); }
a:hover { color: var(--primary-hover); }

/* Container — respect theme 800px but add padding uniformity */
.container { padding-bottom: 3rem; }

/* ===== Site Header ===== */
#header {
  padding: 1.5rem 20px;
  align-items: center;
}

#header .logo a {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

#header .logo a:hover {
  color: var(--primary);
}

#header .menu ul li a {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

#header .menu ul li:before {
  background: var(--primary);
}

/* ===== Post Card — Homepage List ===== */
main .posts {
  border-bottom: none;
  margin-bottom: 0;
}

main .post {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 1.25rem 1.5rem;
  margin-bottom: 0.75rem;
  transition: box-shadow 0.2s;
}

main .post + .post {
  border-top: none;
}

main .posts .post:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.09), 0 0 0 1px rgba(0, 0, 0, 0.03);
}

/* ===== Post Header (shared list + detail) ===== */
main .post__header {
  padding-bottom: 0;
}

/* Title — override theme's Athelas/26px/underline-animation */
main .post__title,
main .post .post__title {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.45;
  margin: 0 0 0.35rem;
  display: block;
}

/* Remove theme's hover underline pseudo-element */
main .post__title:before {
  display: none;
}

main .post__title a,
main .post .post__title a {
  color: var(--text);
  text-decoration: none;
}

main .post__title a:hover,
main .post .post__title a:hover {
  color: var(--primary);
}

/* Meta dateline */
main .post__meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
  align-items: center;
  margin: 0;
}

main .post__time {
  font-variant-numeric: tabular-nums;
}

main .post__source {
  padding: 0;
}

main .post__source a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px dashed var(--border);
  transition: color 0.15s;
}

main .post__source a:hover {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Read More link */
main .read-more {
  margin-top: 0.5rem;
}

main .read-more a {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 500;
  transition: color 0.15s;
}

main .read-more a:hover {
  color: var(--primary-hover);
  text-decoration: none;
}

/* Post summary (usually empty, but just in case) */
main .post__summary {
  margin-bottom: 0;
}

/* ===== Detail Page — Article Post ===== */
/* On detail page, the single .post article gets more room */
main > .content > article.post {
  padding: 2rem 1.5rem;
}

/* Detail page title — bigger, more prominent */
main > .content > article.post .post__title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

/* Detail page header — add bottom separator */
main > .content > article.post .post__header {
  padding-bottom: 1rem;
  margin-bottom: 0.25rem;
  border-bottom: 1px solid var(--border-light);
}

/* Detail page meta — slightly larger */
main > .content > article.post .post__meta {
  font-size: 0.82rem;
  gap: 0.3rem 0.9rem;
}

/* Post reactions (emoji badges from theme) */
main .post-reactions {
  margin: 0.75rem 0;
}

main .post-reactions .reaction-emoji {
  border-color: var(--border);
  font-size: 0.85rem;
}

/* ===== Table of Contents ===== */
/* Desktop: keep TOC as a right-side sticky/floating directory.
   Mobile/tablet: fall back to inline card above article. */
.post-toc {
  position: fixed;
  top: 6.25rem;
  left: calc(50% + 270px);
  width: 260px;
  max-height: calc(100vh - 8rem);
  overflow: auto;
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  font-size: 0.85rem;
  line-height: 1.65;
  z-index: 10;
}

.post-toc .post-toc-title {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 0 0 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-light);
}

.post-toc .post-toc-content ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.post-toc .post-toc-content ul ul {
  padding-left: 1.1em;
  display: block;
}

.post-toc .post-toc-content a,
.post-toc #TableOfContents a {
  color: var(--text-secondary);
  text-decoration: none;
  display: block;
  padding: 0.15em 0;
  transition: color 0.15s;
  font-size: 0.85rem;
}

.post-toc .post-toc-content a:hover,
.post-toc #TableOfContents a:hover {
  color: var(--primary);
}

.post-toc .post-toc-content .toc-link.active {
  color: var(--primary);
  font-weight: 500;
}

/* ===== Post Content ===== */
.post-content {
  font-size: 1rem;
  line-height: var(--leading);
  color: var(--text);
  word-break: break-word;
  overflow-wrap: break-word;
}

.post-content p {
  margin: 0 0 1.15em;
}

/* --- Headings --- */
.post-content h1 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  border-bottom: 2px solid var(--primary);
  padding-bottom: 0.35em;
  margin: 2em 0 0.75em;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.post-content h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #1a1f36;
  margin: 1.8em 0 0.6em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--border);
  line-height: 1.45;
}

.post-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #2c3e50;
  margin: 1.5em 0 0.5em;
  line-height: 1.45;
}

.post-content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #34495e;
  margin: 1.25em 0 0.4em;
}

/* Override theme's heading font-weight: 400 */
main .post h2,
main .post h3,
main .post h4,
main .post h5,
main .post h6 {
  font-weight: 600;
}

/* Issue ID codes inside headings — subtle grey label */
.post-content h2 code,
.post-content h3 code,
.post-content h4 code {
  background: #ebebeb;
  color: #999;
  font-size: 0.68em;
  padding: 0.1em 0.45em;
  border-radius: 3px;
  font-weight: 400;
  vertical-align: middle;
  font-family: var(--font-mono);
  letter-spacing: 0;
}

/* First heading — less top margin */
.post-content > h1:first-child,
.post-content > h2:first-child,
.post-content > h3:first-child {
  margin-top: 0.25em;
}

/* --- Links --- */
.post-content a,
main .post p > a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.post-content a:hover,
main .post p > a:hover {
  color: var(--primary-hover);
  border-bottom-color: var(--primary-hover);
}

/* --- Lists --- */
.post-content ul,
.post-content ol {
  padding-left: 1.6em;
  margin: 0.5em 0 1.1em;
}

.post-content li {
  margin-bottom: 0.45em;
  line-height: var(--leading);
}

.post-content li > p {
  margin-bottom: 0.35em;
}

.post-content li ul,
.post-content li ol {
  margin: 0.3em 0 0.3em;
}

/* --- Blockquote --- */
.post-content blockquote,
main .post blockquote {
  border-left: 3px solid var(--primary);
  padding: 0.85em 1.2em;
  margin: 1.25em 0;
  background: var(--primary-pale);
  color: var(--text-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: normal;
  font-size: 0.95em;
  line-height: 1.8;
  box-shadow: none;
  position: static;
}

.post-content blockquote p:last-child,
main .post blockquote p:last-child {
  margin-bottom: 0;
}

/* Nested blockquotes — reduce visual weight */
.post-content blockquote blockquote {
  background: rgba(0, 0, 0, 0.02);
  border-left-color: var(--border);
  margin: 0.75em 0;
}

/* ===== Info-Dense Blockquote — "Intelligence Card" ===== */
/* Targets structured field blockquotes (TL;DR / 来源 / 核心事实 / …)
   that directly follow an <h2> article heading.  The simple "今日亮点"
   summary blockquote follows <h1>, so it is unaffected.
   Mechanism: Zola's pulldown-cmark emits soft line-breaks (\n) between
   fields inside a single <p>.  `white-space: pre-line` makes those
   newlines visible; `strong::before { display: block }` inserts vertical
   breathing room between fields without touching the HTML. */

.post-content h2 + blockquote {
  padding: 1em 1.3em;
}

.post-content h2 + blockquote p {
  white-space: pre-line;
  line-height: 1.7;
}

/* Field labels — orange scanning anchors */
.post-content h2 + blockquote strong {
  color: var(--primary-hover);
  font-weight: 700;
  letter-spacing: 0.01em;
}

/* Vertical gap before each field label */
.post-content h2 + blockquote p strong::before {
  content: '';
  display: block;
  height: 0.5em;
}

/* First field (TL;DR) — no extra gap above */
.post-content h2 + blockquote p > strong:first-child::before {
  display: none;
}

/* --- Inline Code --- */
.post-content :not(pre) > code,
main .post :not(pre) > code {
  background: #f3f4f6;
  color: #c0392b;
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  font-size: 0.875em;
  font-family: var(--font-mono);
  word-break: break-all;
}

/* --- Code Block --- */
.post-content pre {
  background: #1e1e2e;
  color: #cdd6f4;
  padding: 1.1em 1.4em;
  border-radius: var(--radius);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.25em 0;
  font-size: 0.85em;
  line-height: 1.65;
  box-shadow: var(--shadow-sm);
}

.post-content pre > code {
  background: none;
  color: inherit;
  padding: 0;
  border-radius: 0;
  font-size: 1em;
  word-break: normal;
}

/* --- Strong --- */
.post-content strong {
  font-weight: 600;
  color: #111;
}

/* --- Images --- */
.post-content img {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 1.5em auto;
  display: block;
  box-shadow: var(--shadow-sm);
}

/* --- Horizontal Rule --- */
.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

/* --- Tables --- */
.post-content table,
main .post table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25em 0;
  font-size: 0.88em;
  box-shadow: none;
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.post-content thead,
main .post table thead {
  background: #f8f9fa;
}

.post-content th,
main .post table th {
  background: #f8f9fa;
  font-weight: 600;
  padding: 0.55em 0.9em;
  border: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
  font-size: 0.92em;
  color: var(--text-secondary);
}

.post-content td,
main .post table td {
  padding: 0.5em 0.9em;
  border: 1px solid var(--border);
  line-height: 1.6;
}

.post-content tr:nth-child(even) td {
  background: #fafafa;
}

main .post table tr:hover {
  background-color: var(--primary-pale);
}

/* ===== Post Footer & Navigation ===== */
main .post-footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

/* Tags */
main .post-tags {
  padding: 0.75rem 0;
}

main .post-tags a {
  display: inline-block;
  color: var(--primary);
  background: var(--primary-pale);
  padding: 0.15em 0.6em;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  margin-right: 0.4rem;
  margin-bottom: 0.3rem;
  transition: background 0.15s, color 0.15s;
  word-break: break-all;
}

main .post-tags a:hover {
  background: var(--primary);
  color: #fff;
}

/* Post Navigation — override theme float with flex */
main .post-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 1rem 0;
}

/* Clear theme float styles */
.next, .previous {
  float: none;
  font-size: inherit;
  font-weight: inherit;
}

.next:hover, .previous:hover {
  transform: none;
}

main .post-nav a {
  flex: 0 1 48%;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.15s, color 0.15s;
  line-height: 1.45;
  font-weight: 500;
  display: block;
}

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

main .post-nav a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* ===== Pagination ===== */
main .pagination {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin: 1.5rem 0;
  font-family: var(--font-body);
}

main .pagination a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4em 1em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.15s, color 0.15s;
  float: none;
}

main .pagination a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* ===== Mobile Navbar ===== */
#mobile-panel {
  position: relative;
  z-index: 1;
  background: var(--surface);
  min-height: 100vh;
  width: 100%;
  box-sizing: border-box;
}

.mobile-navbar {
  background: var(--surface);
}

.mobile-navbar .logo {
  font-family: var(--font-body);
  font-weight: 700;
  color: var(--text);
}

.mobile-navbar .mobile-navbar-icon span {
  background-color: var(--text-secondary);
}

.mobile-menu {
  background-color: rgba(244, 245, 247, 0.95);
}

.mobile-menu .mobile-menu-list {
  border-top-color: var(--border);
}

.mobile-menu .mobile-menu-item {
  border-bottom-color: var(--border-light);
}

.mobile-menu .mobile-menu-list a {
  font-family: var(--font-body);
  color: var(--text-secondary);
}

.mobile-menu .mobile-menu-list a:hover {
  color: var(--primary);
}

/* ===== Mobile ===== */
@media (max-width: 800px) {
  body {
    border-top-color: var(--primary);
    overflow-x: hidden;
  }

  .container {
    width: 100%;
    padding-bottom: 1.5rem;
    overflow-x: clip;
  }

  #header {
    padding: 50px 0 0;
  }

  main {
    padding-top: 0.25rem;
  }

  main .content,
  #mobile-panel {
    width: 100%;
    max-width: 100%;
    padding: 0 12px;
    box-sizing: border-box;
    overflow-x: hidden;
  }

  main .post {
    padding: 1rem 1.15rem;
    margin-bottom: 0.6rem;
    border-radius: var(--radius);
  }

  main > .content > article.post {
    padding: 1.25rem 1.15rem;
  }

  /* 手机上先隐藏 TOC，优先保证正文可见、可读 */
  .post-toc {
    display: none;
  }

  #btt {
    right: 1rem !important;
    bottom: 1rem !important;
    width: 44px !important;
    height: 44px !important;
  }
}

@media (max-width: 680px) {
  :root {
    --text-base: 15px;
    --leading:   1.8;
  }

  .mobile-navbar .mobile-header-logo {
    margin-right: 0;
    max-width: calc(100% - 64px);
  }

  .mobile-navbar .mobile-header-logo .logo {
    display: inline-block;
    max-width: 100%;
    font-size: 18px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Detail page title — scale down gracefully */
  main > .content > article.post .post__title {
    font-size: 1.15rem;
    line-height: 1.4;
  }

  .post-content h1 {
    font-size: 1.25rem;
    margin: 1.5em 0 0.6em;
  }

  .post-content h2 {
    font-size: 1.05rem;
    margin: 1.5em 0 0.5em;
  }

  .post-content h3 {
    font-size: 1rem;
  }

  /* Code blocks — prevent overflow */
  .post-content pre {
    padding: 0.85em 1em;
    font-size: 0.8em;
    border-radius: var(--radius-sm);
    margin-left: -0.5em;
    margin-right: -0.5em;
  }

  /* Tables — ensure scroll on narrow screens */
  .post-content table {
    font-size: 0.82em;
    margin-left: -0.25em;
    margin-right: -0.25em;
  }

  /* Blockquote — tighter on mobile */
  .post-content blockquote,
  main .post blockquote {
    padding: 0.65em 0.9em;
    margin: 1em 0;
    font-size: 0.92em;
  }

  /* Intelligence Card — tighter field gaps on mobile */
  .post-content h2 + blockquote {
    padding: 0.75em 1em;
  }

  .post-content h2 + blockquote p strong::before {
    height: 0.35em;
  }

  /* Post-nav stacks vertically */
  main .post-nav {
    flex-direction: column;
    gap: 0.5rem;
  }

  main .post-nav a {
    flex: 1 1 100%;
    max-width: 100%;
  }

  main .post-nav a.next {
    text-align: left;
  }

  /* TOC — compact */
  .post-toc {
    padding: 0.75rem 1rem;
    font-size: 0.82rem;
  }

  /* Meta — allow wrapping, reduce gap */
  main .post__meta {
    gap: 0.15rem 0.5rem;
  }

  /* Pagination */
  main .pagination {
    margin: 1rem 0;
  }
}

/* ===== Small phone (< 400px) ===== */
@media (max-width: 400px) {
  main .post {
    padding: 0.85rem 1rem;
    border-radius: var(--radius-sm);
  }

  main > .content > article.post {
    padding: 1rem;
  }

  main > .content > article.post .post__title {
    font-size: 1.08rem;
  }

  .post-content pre {
    margin-left: -0.75em;
    margin-right: -0.75em;
    border-radius: 0;
  }
}

/* ===== Footnotes ===== */
main .post .footnote-definition:first-of-type {
  border-top-color: var(--border);
}