@import url("https://fonts.googleapis.com/css2?family=Sora:wght@400;500&family=IBM+Plex+Mono:wght@400;500&display=swap");

:root {
  --bg: #F7F6F3;
  --ink: #2D2D2D;
  --muted: #6B7280;
  --muted-light: #9CA3AF;
  --line: #E8E6E1;
  --card: #F7F6F3;
  --brand: #3D5A80;
  --brand-deep: #3D5A80;
  --nav-bg: transparent;
  --nav-ink: #2D2D2D;
  --chip: #FFFFFF33;
  --featured: #C53D43;

  /* ── Category Colors ── */
  --cat-ai-daily-news: #3D5A80;
  --cat-ai:            #0EA5E9;
  --cat-python:        #2563EB;
  --cat-nextjs:        #000000;
  --cat-java:          #F89820;
  --cat-sql:           #C53D43;
  --cat-data-infra:    #14B8A6;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Sora", system-ui, sans-serif;
  line-height: 1.7;
}

a {
  color: var(--brand-deep);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-shell {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  min-height: 100vh;
  padding: 32px 24px;
  background: transparent;
  color: var(--nav-ink);
  border-right: 1px solid var(--line);
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--ink);
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  display: none;
}

.brand-text {
  display: grid;
  line-height: 1.2;
}

.brand-text strong {
  font-family: "Sora", sans-serif;
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: -0.5px;
  color: var(--ink);
}

.brand-text small {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.5px;
}

/* ── Search ── */
.search-block {
  position: relative;
}

.search-label {
  display: none;
}

.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0 12px;
  height: 32px;
  background: transparent;
  color: var(--ink);
  font-family: "Sora", sans-serif;
  font-size: 0.75rem;
  outline: none;
}

.search-input::placeholder {
  color: var(--muted-light);
}

.search-input:focus {
  border-color: var(--brand);
}

.search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  max-height: 360px;
  overflow: auto;
  z-index: 40;
  border-radius: 2px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.search-item {
  display: grid;
  gap: 2px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.search-item:last-child {
  border-bottom: 0;
}

.search-item strong {
  color: var(--ink);
  font-size: 0.8125rem;
}

.search-item small {
  color: var(--muted-light);
  font-size: 0.6875rem;
}

.search-item span {
  color: var(--muted);
  font-size: 0.75rem;
}

.search-empty {
  margin: 0;
  padding: 12px;
  color: var(--muted);
  font-size: 0.8125rem;
}

/* ── Sidebar Nav ── */
.sidebar-nav {
  display: grid;
  gap: 2px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  border: none;
  border-radius: 2px;
  padding: 0 8px;
  height: 32px;
  color: var(--ink);
  font-size: 0.8125rem;
  font-weight: 400;
}

.sidebar-link .nav-label {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-link:hover {
  text-decoration: none;
  background: rgba(0, 0, 0, 0.04);
  color: var(--ink);
}

.sidebar-link.is-active {
  background: var(--brand);
  color: #F7F6F3;
}

.sidebar-link.is-active .count {
  color: #F7F6F3;
}

.sidebar-link.is-active .cat-dot {
  background: rgba(255, 255, 255, 0.75) !important;
}

.count {
  min-width: 2ch;
  text-align: right;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--muted);
}

.sidebar-note {
  margin-top: auto;
  padding: 12px;
  border-radius: 2px;
  border: 1px solid var(--line);
  background: transparent;
}

.sidebar-note p {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.6875rem;
  font-weight: 400;
  color: var(--muted-light);
}

.sidebar-note small {
  font-size: 0.6875rem;
  color: var(--muted);
}

/* ── Main Content ── */
.main-content {
  padding: 40px;
}

.panel {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 24px 40px;
  margin-bottom: 24px;
  overflow: hidden;
  min-width: 0;
}

/* ── Hero Grid ── */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 310px;
  gap: 24px;
  margin-bottom: 24px;
}

.hero-card {
  border-radius: 2px;
  padding: 32px 40px;
  color: #F7F6F3;
  background: var(--brand);
}

.hero-card h1 {
  margin: 8px 0;
  color: #F7F6F3;
  font-family: "Sora", sans-serif;
  font-size: 2rem;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.hero-card p {
  margin: 0;
  font-size: 0.875rem;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.hero-chips span {
  border-radius: 2px;
  padding: 4px 8px;
  font-size: 0.75rem;
  color: #F7F6F3;
  background: rgba(255, 255, 255, 0.2);
}

.stats-card {
  border-radius: 2px;
  padding: 24px;
  background: transparent;
  border: 1px solid var(--line);
}

.stats-card h2 {
  margin: 0 0 16px;
  font-size: 0.875rem;
  font-weight: 500;
}

.stats-card dl,
.stats-card .stats-grid {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, max-content);
  gap: 16px 28px;
}

.stats-card .stats-item {
  min-width: 0;
}

.stats-card dt {
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.stats-card dd {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--ink);
}

.stats-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
}

.stats-footer-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: var(--muted);
}

.stats-footer-date {
  font-family: "Sora", sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink);
}

.kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.75rem;
  color: #F7F6F3;
  font-weight: 500;
}

.panel .kicker {
  color: var(--featured);
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--ink);
  font-family: "Sora", sans-serif;
  line-height: 1.25;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.featured-title {
  display: inline-block;
  font-size: 0.875rem;
  line-height: 1.5;
  font-weight: 500;
  margin: 8px 0 6px;
  color: var(--brand);
}

.featured-excerpt {
  margin-top: 0;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* ── Post Grid ── */
.post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.grid-post {
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 20px 24px;
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.post-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.4;
}

.post-excerpt {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: break-word;
  word-break: break-word;
}

.post-meta {
  margin-top: auto;
  color: var(--muted-light);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.6875rem;
}

.count-line {
  margin-bottom: 0;
  color: var(--muted);
}

.tag-list {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-chip {
  border-radius: 2px;
  padding: 4px 8px;
  font-size: 0.75rem;
  color: #F7F6F3;
  background: rgba(255, 255, 255, 0.2);
}

/* ── Post Content ── */
.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 2px;
}

.post-content h1,
.post-content h2,
.post-content h3 {
  margin-top: 1.4em;
}

.post-body > h1:first-child,
.post-body > h1:first-of-type {
  display: none;
}

.post-body p,
.post-body li {
  line-height: 1.75;
  font-size: 1rem;
}

.post-body h2 {
  margin-top: 1.2em;
  margin-bottom: 0.5em;
}

.post-body h3 {
  margin-top: 1em;
  margin-bottom: 0.45em;
}

.post-body {
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

.post-body ul,
.post-body ol {
  padding-left: 1.4em;
}

.post-body li {
  margin-bottom: 0.4em;
}

.post-body li > strong:first-child {
  display: inline;
}

.post-body code {
  word-break: break-all;
}

.post-body ul li input[type="checkbox"] {
  margin-right: 0.4em;
}

.post-body pre {
  margin: 12px 0;
}

code {
  background: #EEEDEA;
  border-radius: 2px;
  padding: 0.12em 0.35em;
  font-family: "IBM Plex Mono", monospace;
}

pre {
  overflow-x: auto;
  border-radius: 2px;
  padding: 14px;
  background: #EEEDEA;
  max-width: 100%;
  white-space: pre;
  word-break: normal;
  overflow-wrap: normal;
  font-family: "IBM Plex Mono", monospace;
}

pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
  white-space: pre;
}

.post-body table {
  display: block;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.post-body th,
.post-body td {
  padding: 8px 12px;
  border: 1px solid var(--line);
  white-space: nowrap;
}

.post-body th {
  background: #EEEDEA;
  font-weight: 500;
}

.comments-panel h2 {
  margin-bottom: 14px;
}

/* ── Category Color System ── */

/* Sidebar category dot */
.cat-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  background: transparent;
}

/* Sidebar dot colors by category */
[data-category="ai-daily-news"] .cat-dot { background: var(--cat-ai-daily-news); }
[data-category="ai"]            .cat-dot { background: var(--cat-ai); }
[data-category="python"]        .cat-dot { background: var(--cat-python); }
[data-category="nextjs"]        .cat-dot { background: var(--cat-nextjs); }
[data-category="java"]          .cat-dot { background: var(--cat-java); }
[data-category="sql"]           .cat-dot { background: var(--cat-sql); }
[data-category="data-infra"]    .cat-dot { background: var(--cat-data-infra); }

/* Post card left border by category */
[data-category="ai-daily-news"].grid-post { border-left: 3px solid var(--cat-ai-daily-news); }
[data-category="ai"].grid-post            { border-left: 3px solid var(--cat-ai); }
[data-category="python"].grid-post        { border-left: 3px solid var(--cat-python); }
[data-category="nextjs"].grid-post        { border-left: 3px solid var(--cat-nextjs); }
[data-category="java"].grid-post          { border-left: 3px solid var(--cat-java); }
[data-category="sql"].grid-post           { border-left: 3px solid var(--cat-sql); }
[data-category="data-infra"].grid-post    { border-left: 3px solid var(--cat-data-infra); }

/* Featured panel left border & accent by category */
[data-category="ai-daily-news"].featured-panel { border-left: 4px solid var(--cat-ai-daily-news); }
[data-category="ai"].featured-panel            { border-left: 4px solid var(--cat-ai); }
[data-category="python"].featured-panel        { border-left: 4px solid var(--cat-python); }
[data-category="nextjs"].featured-panel        { border-left: 4px solid var(--cat-nextjs); }
[data-category="java"].featured-panel          { border-left: 4px solid var(--cat-java); }
[data-category="sql"].featured-panel           { border-left: 4px solid var(--cat-sql); }
[data-category="data-infra"].featured-panel    { border-left: 4px solid var(--cat-data-infra); }

/* Category head panel left border by category */
[data-category="ai-daily-news"].category-head { border-left: 4px solid var(--cat-ai-daily-news); }
[data-category="ai"].category-head            { border-left: 4px solid var(--cat-ai); }
[data-category="python"].category-head        { border-left: 4px solid var(--cat-python); }
[data-category="nextjs"].category-head        { border-left: 4px solid var(--cat-nextjs); }
[data-category="java"].category-head          { border-left: 4px solid var(--cat-java); }
[data-category="sql"].category-head           { border-left: 4px solid var(--cat-sql); }
[data-category="data-infra"].category-head    { border-left: 4px solid var(--cat-data-infra); }

/* Category kicker color by category */
[data-category="ai-daily-news"].category-head .kicker { color: var(--cat-ai-daily-news); }
[data-category="ai"].category-head            .kicker { color: var(--cat-ai); }
[data-category="python"].category-head        .kicker { color: var(--cat-python); }
[data-category="nextjs"].category-head        .kicker { color: var(--cat-nextjs); }
[data-category="java"].category-head          .kicker { color: var(--cat-java); }
[data-category="sql"].category-head           .kicker { color: var(--cat-sql); }
[data-category="data-infra"].category-head    .kicker { color: var(--cat-data-infra); }

/* Featured kicker color by category */
[data-category="ai-daily-news"].featured-panel .kicker { color: var(--cat-ai-daily-news); }
[data-category="ai"].featured-panel            .kicker { color: var(--cat-ai); }
[data-category="python"].featured-panel        .kicker { color: var(--cat-python); }
[data-category="nextjs"].featured-panel        .kicker { color: var(--cat-nextjs); }
[data-category="java"].featured-panel          .kicker { color: var(--cat-java); }
[data-category="sql"].featured-panel           .kicker { color: var(--cat-sql); }
[data-category="data-infra"].featured-panel    .kicker { color: var(--cat-data-infra); }

/* Featured title color by category */
[data-category="ai-daily-news"].featured-panel .featured-title { color: var(--cat-ai-daily-news); }
[data-category="ai"].featured-panel            .featured-title { color: var(--cat-ai); }
[data-category="python"].featured-panel        .featured-title { color: var(--cat-python); }
[data-category="nextjs"].featured-panel        .featured-title { color: var(--cat-nextjs); }
[data-category="java"].featured-panel          .featured-title { color: var(--cat-java); }
[data-category="sql"].featured-panel           .featured-title { color: var(--cat-sql); }
[data-category="data-infra"].featured-panel    .featured-title { color: var(--cat-data-infra); }

/* Post category badge */
.post-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 2px;
  color: #fff;
  background: var(--muted);
}

[data-category="ai-daily-news"] .post-badge { background: var(--cat-ai-daily-news); }
[data-category="ai"]            .post-badge { background: var(--cat-ai); }
[data-category="python"]        .post-badge { background: var(--cat-python); }
[data-category="nextjs"]        .post-badge { background: var(--cat-nextjs); }
[data-category="java"]          .post-badge { background: var(--cat-java); }
[data-category="sql"]           .post-badge { background: var(--cat-sql); }
[data-category="data-infra"]    .post-badge { background: var(--cat-data-infra); }

/* ── Responsive ── */
@media (max-width: 980px) {
  .site-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    flex-direction: row;
    flex-wrap: wrap;
    padding: 16px 20px;
    gap: 12px;
  }

  .sidebar-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
  }

  .sidebar-note {
    margin-top: 0;
  }

  .main-content {
    padding: 20px 16px 32px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .post-grid {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 20px 24px;
  }

  pre {
    font-size: 0.82rem;
    padding: 12px;
  }

  .post-body table {
    font-size: 0.82rem;
  }

  .post-body th,
  .post-body td {
    padding: 6px 8px;
  }

  .post-body ul,
  .post-body ol {
    padding-left: 1.2em;
  }

  .post-body li {
    margin-bottom: 0.5em;
  }

  .post-body li p {
    margin: 0.3em 0;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: 12px 10px 24px;
  }

  .panel {
    padding: 16px 14px;
  }

  .hero-card {
    padding: 20px;
  }

  .hero-card h1 {
    font-size: 1.25rem;
  }

  pre {
    font-size: 0.76rem;
    padding: 10px;
  }

  code {
    font-size: 0.82rem;
  }

  .post-body p,
  .post-body li {
    font-size: 0.93rem;
  }

  .post-body h2 {
    font-size: 1.15rem;
  }

  .post-body h3 {
    font-size: 1.02rem;
  }

  .grid-post {
    padding: 14px 16px;
  }

  .post-title {
    font-size: 0.8125rem;
  }

  .post-excerpt {
    font-size: 0.75rem;
  }

  .tag-list {
    gap: 6px;
  }

  .tag-chip {
    font-size: 0.6875rem;
    padding: 3px 7px;
  }
}