/* ============================================
   Shubham Raizada's Blog — Custom Theme
   Clean Engineer's Notebook
   ============================================ */

/* ============================================
   THEME D: Claude
   Warm terracotta, pampas cream, cloudy grays
   Inspired by Claude AI's brand palette
   60% pampas/cream | 30% terracotta | 10% warm teal
   ============================================ */

/* --- CSS Custom Properties (Light Mode Default) --- */
:root {
  /* 60% — Pampas warm cream neutrals */
  --bg-primary: #F4F3EE;
  --bg-surface: #EBE9E2;
  --bg-code: #E2DFD6;
  --text-primary: #2D2A26;
  --text-secondary: #6B6560;
  --text-muted: #A39E96;
  /* 30% — Terracotta (Crail) */
  --accent: #C15F3C;
  --accent-hover: #A84E2F;
  --accent-light: #FAEAE4;
  /* 10% — Warm teal */
  --accent-secondary: #3A8F85;
  --accent-secondary-hover: #2D7A71;
  --accent-secondary-light: #E0F2EF;
  --accent-secondary-text: #1F5F58;
  /* Muted gold for tertiary */
  --accent-tertiary: #B8860B;
  --accent-tertiary-light: #FDF6E3;
  --accent-tertiary-text: #7A5A08;
  /* Headings — deep terracotta */
  --heading-accent: #8B3E22;
  --border: #D4CEBF;
  --border-light: #E2DDD0;
  --shadow-sm: 0 1px 2px rgba(45,42,38,0.06);
  --shadow-md: 0 4px 6px -1px rgba(45,42,38,0.08), 0 2px 4px -2px rgba(45,42,38,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(45,42,38,0.1), 0 4px 6px -4px rgba(45,42,38,0.06);
  --radius: 8px;
  --radius-sm: 4px;
  --content-width: 1080px;
  --header-height: 60px;
  --progress-color: linear-gradient(90deg, #C15F3C, #3A8F85);
  --toggle-bg: #D4CEBF;
  --tag-bg: #FAEAE4;
  --tag-text: #8B3E22;
  --card-hover-border: #C15F3C;
  --scrollbar-track: #E2DDD0;
  --scrollbar-thumb: #A39E96;
  /* Category-specific tag colors */
  --tag-systems-bg: #FAEAE4;
  --tag-systems-text: #8B3E22;
  --tag-databases-bg: #E0F2EF;
  --tag-databases-text: #1F5F58;
  --tag-java-bg: #FEE2E2;
  --tag-java-text: #991B1B;
  --tag-distributed-bg: #EDE4F7;
  --tag-distributed-text: #5B3A8C;
  --tag-personal-bg: #FDF6E3;
  --tag-personal-text: #7A5A08;
  --tag-ai-bg: #F0E4F8;
  --tag-ai-text: #6B21A8;
  --tag-performance-bg: #FFEDD5;
  --tag-performance-text: #9A3412;
  --tag-software-bg: #E0F2EF;
  --tag-software-text: #1F5F58;
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  /* 60% — Deep warm charcoal with brown undertone */
  --bg-primary: #1A1714;
  --bg-surface: #2A2520;
  --bg-code: #22201B;
  --text-primary: #F0EDE6;
  --text-secondary: #B1ADA1;
  --text-muted: #7A756C;
  /* 30% — Soft terracotta */
  --accent: #E8845E;
  --accent-hover: #F0A080;
  --accent-light: #3D2218;
  /* 10% — Warm teal */
  --accent-secondary: #5CC4B8;
  --accent-secondary-hover: #7DD8CE;
  --accent-secondary-light: #1A3B36;
  --accent-secondary-text: #7DD8CE;
  /* Muted gold tertiary */
  --accent-tertiary: #DAA520;
  --accent-tertiary-light: #3D2D0A;
  --accent-tertiary-text: #F0D060;
  /* Headings */
  --heading-accent: #F0A080;
  --border: #3E3830;
  --border-light: #2A2520;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5), 0 4px 6px -4px rgba(0,0,0,0.3);
  --progress-color: linear-gradient(90deg, #E8845E, #5CC4B8);
  --toggle-bg: #3E3830;
  --tag-bg: #3D2218;
  --tag-text: #F0A080;
  --card-hover-border: #E8845E;
  --scrollbar-track: #2A2520;
  --scrollbar-thumb: #5A5348;
  --tag-systems-bg: #3D2218;
  --tag-systems-text: #F0A080;
  --tag-databases-bg: #1A3B36;
  --tag-databases-text: #7DD8CE;
  --tag-java-bg: #450A0A;
  --tag-java-text: #FCA5A5;
  --tag-distributed-bg: #2E1A4A;
  --tag-distributed-text: #C4A8E8;
  --tag-personal-bg: #3D2D0A;
  --tag-personal-text: #F0D060;
  --tag-ai-bg: #3B0764;
  --tag-ai-text: #D8B4FE;
  --tag-performance-bg: #431407;
  --tag-performance-text: #FDBA74;
  --tag-software-bg: #1A3B36;
  --tag-software-text: #7DD8CE;
}

/* --- Base Reset & Typography --- */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Scrollbar Styling --- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 4px;
}

/* --- Links --- */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--accent-hover);
}

/* --- Headings --- */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.3;
  margin-top: 2em;
  margin-bottom: 0.75em;
}
h1 { font-size: 2rem; font-weight: 700; }
h2 { font-size: 1.5rem; border-bottom: 2px solid var(--accent-tertiary-light); padding-bottom: 0.4em; color: var(--heading-accent); }
h3 { font-size: 1.25rem; color: var(--text-primary); }
h4 { font-size: 1.1rem; }

/* --- Paragraphs & Lists --- */
p {
  margin-bottom: 1.25em;
  color: var(--text-primary);
}

ul, ol {
  padding-left: 1.5em;
  margin-bottom: 1.25em;
}

li {
  margin-bottom: 0.4em;
}

/* --- Horizontal Rules --- */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em 0;
}

/* --- Blockquotes --- */
blockquote {
  border-left: 3px solid var(--accent-secondary);
  padding: 0.5em 1em;
  margin: 1.5em 0;
  background: var(--accent-secondary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
}
blockquote p {
  margin-bottom: 0.5em;
  color: var(--text-secondary);
}

/* --- Code --- */
code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.875em;
}

/* Inline code */
p code, li code, td code, h1 code, h2 code, h3 code, h4 code, a code {
  background: var(--accent-tertiary-light);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--accent-tertiary-text);
  font-size: 0.85em;
}

/* Code blocks */
pre {
  background: var(--bg-surface) !important;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25em;
  overflow-x: auto;
  margin: 1.5em 0;
  line-height: 1.5;
}

pre code {
  background: none !important;
  border: none;
  padding: 0;
  font-size: 0.85em;
  color: var(--text-primary);
}

/* highlight.js overrides for dark mode */
[data-theme="dark"] .hljs {
  background: var(--bg-surface) !important;
  color: var(--text-primary) !important;
}

/* --- Tables --- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.95em;
  overflow-x: auto;
  display: block;
}

thead {
  background: var(--bg-surface);
}

th, td {
  padding: 0.75em 1em;
  text-align: left;
  border: 1px solid var(--border);
}

th {
  font-weight: 600;
  color: var(--text-primary);
}

tr:nth-child(even) {
  background: var(--bg-surface);
}

/* --- Images --- */
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

/* ============================================
   LAYOUT: Site Header
   ============================================ */
.site-header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5em;
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.site-header .wrapper {
  max-width: var(--content-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.site-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary) !important;
  letter-spacing: -0.02em;
}

.site-title:hover {
  color: var(--heading-accent) !important;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5em;
}

.site-nav .page-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.site-nav .page-link:hover {
  color: var(--accent);
}

/* Hide minima's default hamburger menu styling */
.site-nav label, .site-nav .menu-icon {
  display: none !important;
}

/* Ensure nav links show on desktop */
.site-nav .trigger {
  display: flex !important;
  align-items: center;
  gap: 1.5em;
}

/* --- Dark Mode Toggle --- */
.theme-toggle {
  background: var(--toggle-bg);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease, transform 0.2s ease;
  font-size: 1.1rem;
  padding: 0;
  flex-shrink: 0;
}

.theme-toggle:hover {
  transform: scale(1.1);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon,
:root:not([data-theme="dark"]) .theme-toggle .icon-moon {
  display: block;
}

/* ============================================
   LAYOUT: Page Content Wrapper
   ============================================ */
.page-content {
  padding: 2em 1.5em;
}

.page-content .wrapper {
  max-width: var(--content-width);
  margin: 0 auto;
}

/* ============================================
   HOMEPAGE: Hero Section
   ============================================ */
.hero {
  padding: 3em 0 2em;
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--accent), var(--accent-secondary), var(--accent-tertiary)) 1;
  margin-bottom: 2.5em;
}

.hero h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 0.5em;
  border: none;
  padding: 0;
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--heading-accent), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .tagline {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.25em;
  line-height: 1.6;
  max-width: 600px;
}

/* --- Profile link strip (compact pills) + content showcase cards --- */
.profile-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6em;
  margin-top: 0.5em;
}

.profile-chip {
  --brand-color: var(--accent);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.5em 0.9em;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1;
  transition: all 0.18s ease;
}

.profile-chip:hover {
  border-color: var(--brand-color);
  color: var(--brand-color);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.profile-chip-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  color: var(--brand-color);
  flex: 0 0 auto;
}

.profile-chip-icon svg { width: 16px; height: 16px; fill: currentColor; }

.profile-chip-label {
  white-space: nowrap;
  max-width: 26ch;
  overflow: hidden;
  text-overflow: ellipsis;
}

.profile-chip-arrow {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform 0.18s ease, color 0.18s ease;
}

.profile-chip:hover .profile-chip-arrow {
  color: var(--brand-color);
  transform: translate(1px, -1px);
}

.profile-chip--linkedin { --brand-color: #0a66c2; }
.profile-chip--github   { --brand-color: var(--text-primary); }
.profile-chip--medium   { --brand-color: #1a8917; }

/* Content showcase cards: two equal, primary emphasis */
.content-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1em;
  margin-top: 1em;
}

.content-card {
  --brand-color: var(--heading-accent);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.6em;
  padding: 1.4em 1.5em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  transition: all 0.2s ease;
}

.content-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--brand-color);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.content-card:hover {
  border-color: var(--brand-color);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.content-card:hover::before { opacity: 0.05; }

.content-card-head {
  display: flex;
  align-items: center;
  gap: 0.65em;
}

.content-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-light);
  color: var(--brand-color);
  flex: 0 0 auto;
}

.content-card-icon svg { width: 26px; height: 26px; fill: currentColor; }

.content-card-label {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.content-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.content-card-cta {
  margin-top: auto;
  padding-top: 0.4em;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand-color);
  transition: transform 0.2s ease;
}

.content-card:hover .content-card-cta { transform: translateX(3px); }

.content-card--bookshelf { --brand-color: var(--heading-accent); }
.content-card--papers    { --brand-color: var(--accent); }

/* White Papers card: compact preview list */
.paper-preview {
  display: flex;
  flex-direction: column;
  gap: 0.4em;
  margin: 0.3em 0 0.2em;
}

.paper-preview-row {
  display: flex;
  align-items: baseline;
  gap: 0.55em;
}

.paper-preview-dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-color);
  transform: translateY(-1px);
}

.paper-preview-title {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.paper-preview-count {
  margin-top: 0.15em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* --- White Papers: listing grid + detail page --- */
.paper-list-grid {
  display: flex;
  flex-direction: column;
  gap: 0.8em;
  margin-top: 1em;
}

.paper-card {
  display: flex;
  align-items: center;
  gap: 1em;
  padding: 1.1em 1.3em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.paper-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.paper-card-body { flex: 1 1 auto; min-width: 0; }

.paper-card-title {
  margin: 0 0 0.15em;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

.paper-card-authors {
  margin: 0 0 0.4em;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.paper-card-meta,
.paper-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5em;
  margin-bottom: 0.4em;
}

.paper-venue {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15em 0.6em;
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--accent);
}

.paper-year {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.paper-card-summary {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.paper-card-arrow {
  flex: 0 0 auto;
  font-size: 1.4rem;
  color: var(--text-muted);
  transition: transform 0.2s ease, color 0.2s ease;
}

.paper-card:hover .paper-card-arrow {
  color: var(--accent);
  transform: translateX(3px);
}

/* Paper detail page */
.paper-header {
  margin: 1.5em 0 1em;
}

.paper-title {
  margin: 0 0 0.25em;
  line-height: 1.25;
}

.paper-authors {
  margin: 0 0 0.6em;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.paper-summary {
  margin: 0.6em 0 1em;
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.paper-card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6em;
  margin-top: 0.7em;
}

.post-content .paper-link,
.paper-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.5em 1em;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.post-content .paper-link--primary,
.paper-link--primary {
  background: var(--accent);
  color: #fff;
}

.paper-link--primary:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.post-content .paper-link--ghost,
.paper-link--ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
}

.paper-link--ghost:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* --- BookShelf card: auto-scrolling filmstrip "shelf" preview --- */
.book-filmstrip {
  display: block;
  margin-top: 1.1em;
  overflow-x: hidden;
  /* soft fade on both edges so covers slide in/out gracefully */
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 18px, #000 calc(100% - 18px), transparent 100%);
  mask-image: linear-gradient(to right, transparent 0, #000 18px, #000 calc(100% - 18px), transparent 100%);
}

.book-filmstrip-track {
  display: flex;
  gap: 0.7em;
  width: max-content;
  padding: 2px 0;
}

.book-spine {
  flex: 0 0 auto;
}

.book-spine-cover {
  display: block;
  width: 62px;
  height: 88px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--bg-surface);
  transition: transform 0.2s ease;
}

.content-card:hover .book-spine-cover {
  transform: translateY(-2px);
}

.book-filmstrip { margin-top: 0.3em; }

.book-spine-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: 0;
}

/* Text-only spine when a book has no cover image yet */
.book-spine-cover--placeholder {
  display: flex;
  align-items: flex-end;
  padding: 0.5em;
  background: linear-gradient(160deg, var(--accent-light), var(--bg-surface));
  border: 1px solid var(--border);
}

.book-spine-title {
  font-size: 0.62rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--heading-accent);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Medium latest-post title can be long: clamp the chip label */
.profile-chip--medium .profile-chip-label { max-width: 40ch; }

/* ============================================
   HOMEPAGE: Category Filter Pills
   ============================================ */
.category-filter {
  display: flex;
  gap: 0.5em;
  flex-wrap: wrap;
  margin-bottom: 2em;
  padding-bottom: 1.5em;
  border-bottom: 1px solid var(--border);
}

.category-pill {
  display: inline-block;
  padding: 0.35em 0.85em;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  background: transparent;
  font-family: 'Inter', sans-serif;
}

.category-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.category-pill.active {
  background: var(--heading-accent);
  color: #FFFFFF;
  border-color: var(--heading-accent);
}

/* Different active colors per category pill */
.category-pill[data-category="systems"].active { background: var(--tag-systems-text); border-color: var(--tag-systems-text); }
.category-pill[data-category="databases"].active { background: var(--tag-databases-text); border-color: var(--tag-databases-text); }
.category-pill[data-category="java"].active { background: var(--tag-java-text); border-color: var(--tag-java-text); }
.category-pill[data-category="distributed-systems"].active { background: var(--tag-distributed-text); border-color: var(--tag-distributed-text); }
.category-pill[data-category="software-engineering"].active { background: var(--tag-software-text); border-color: var(--tag-software-text); }
.category-pill[data-category="ai"].active { background: var(--tag-ai-text); border-color: var(--tag-ai-text); }
.category-pill[data-category="personal"].active { background: var(--tag-personal-text); border-color: var(--tag-personal-text); }

/* ============================================
   HOMEPAGE: Post Cards
   ============================================ */
.post-list-heading {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--heading-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.5em;
  border: none;
  padding: 0;
}

.post-card {
  padding: 1.5em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 1em;
  transition: all 0.2s ease;
  background: var(--bg-primary);
}

.post-card:hover {
  border-color: var(--card-hover-border);
  border-left: 3px solid var(--heading-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.post-card-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.5em;
  line-height: 1.4;
}

.post-card-title a {
  color: var(--text-primary);
}

.post-card-title a:hover {
  color: var(--accent);
}

.post-card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.6em;
  display: flex;
  align-items: center;
  gap: 0.5em;
  flex-wrap: wrap;
}

.post-card-meta .separator {
  color: var(--text-muted);
}

.post-card-tags {
  display: flex;
  gap: 0.4em;
  flex-wrap: wrap;
  margin-bottom: 0.75em;
}

.post-card-tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2em 0.6em;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--tag-text);
  text-transform: capitalize;
}

/* Category-specific tag colors */
.post-card-tag.tag-systems, .post-card-tag.tag-rust, .post-card-tag.tag-kafka { background: var(--tag-systems-bg); color: var(--tag-systems-text); }
.post-card-tag.tag-databases, .post-card-tag.tag-mysql, .post-card-tag.tag-innodb, .post-card-tag.tag-transactions { background: var(--tag-databases-bg); color: var(--tag-databases-text); }
.post-card-tag.tag-java, .post-card-tag.tag-concurrency, .post-card-tag.tag-virtual-threads { background: var(--tag-java-bg); color: var(--tag-java-text); }
.post-card-tag.tag-distributed-systems, .post-card-tag.tag-algorithms { background: var(--tag-distributed-bg); color: var(--tag-distributed-text); }
.post-card-tag.tag-personal, .post-card-tag.tag-reflections { background: var(--tag-personal-bg); color: var(--tag-personal-text); }
.post-card-tag.tag-ai, .post-card-tag.tag-compilers, .post-card-tag.tag-quantization, .post-card-tag.tag-ml-infrastructure { background: var(--tag-ai-bg); color: var(--tag-ai-text); }
.post-card-tag.tag-performance, .post-card-tag.tag-optimization, .post-card-tag.tag-kernel { background: var(--tag-performance-bg); color: var(--tag-performance-text); }
.post-card-tag.tag-software-engineering, .post-card-tag.tag-best-practices, .post-card-tag.tag-developer-tools { background: var(--tag-software-bg); color: var(--tag-software-text); }

.post-card-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   HOMEPAGE: Medium / External Section
   ============================================ */
.external-section {
  margin-top: 3em;
  padding-top: 2em;
  border-top: 1px solid var(--border);
}

.external-section h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  padding: 0;
  margin-top: 0;
  margin-bottom: 1em;
}

.external-card {
  display: flex;
  align-items: flex-start;
  gap: 0.75em;
  padding: 1em 1.25em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.75em;
  transition: all 0.2s ease;
}

.external-card:hover {
  border-color: var(--card-hover-border);
  box-shadow: var(--shadow-sm);
}

.external-card .external-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  color: var(--text-muted);
  fill: var(--text-muted);
}

.external-card .external-info {
  flex: 1;
}

.external-card .external-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.2em;
}

.external-card .external-title a {
  color: var(--text-primary);
}

.external-card .external-title a:hover {
  color: var(--accent);
}

.external-card .external-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   POST PAGE: Reading Progress Bar
   ============================================ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--progress-color);
  background-size: 100% 100%;
  z-index: 200;
  transition: width 0.1s linear;
  width: 0%;
}

/* ============================================
   POST PAGE: Post Header
   ============================================ */
.post-header {
  margin-bottom: 2em;
  padding-bottom: 1.5em;
  border-bottom: 1px solid var(--border);
}

.post-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.5em;
  color: var(--text-primary);
}

.post-meta {
  font-size: 0.875rem;
  color: var(--text-secondary) !important;
  display: flex;
  align-items: center;
  gap: 0.5em;
  flex-wrap: wrap;
}

.post-meta time {
  color: var(--text-secondary);
}

.reading-time {
  color: var(--text-muted);
}

/* ============================================
   POST PAGE: Table of Contents (Top)
   ============================================ */
.toc-container {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-tertiary);
  border-radius: var(--radius);
  margin-bottom: 2em;
  background: var(--bg-surface);
  overflow: hidden;
}

.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75em 1.25em;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: background 0.2s ease;
  user-select: none;
}

.toc-header:hover {
  background: var(--border-light);
}

.toc-toggle-icon {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.toc-container.collapsed .toc-toggle-icon {
  transform: rotate(-90deg);
}

.toc-body {
  padding: 0 1.25em 1em;
  max-height: 500px;
  overflow-y: auto;
  transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
  opacity: 1;
}

.toc-container.collapsed .toc-body {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  opacity: 0;
}

.toc-body ol {
  padding-left: 1.25em;
  margin: 0;
  list-style: decimal;
}

.toc-body li {
  margin-bottom: 0.3em;
}

.toc-body a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
}

.toc-body a:hover {
  color: var(--accent);
}

/* ============================================
   POST PAGE: Floating TOC Button
   ============================================ */
.floating-toc-btn {
  position: fixed;
  bottom: 2em;
  right: 2em;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--heading-accent));
  color: #FFFFFF;
  border: none;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 150;
  transition: transform 0.2s ease, opacity 0.2s ease;
  font-size: 1.2rem;
}

.floating-toc-btn:hover {
  transform: scale(1.1);
}

.floating-toc-btn.visible {
  display: flex;
}

/* Floating TOC Overlay */
.floating-toc-overlay {
  position: fixed;
  bottom: 5em;
  right: 2em;
  width: 280px;
  max-height: 400px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 160;
  display: none;
  overflow-y: auto;
  padding: 1em;
}

.floating-toc-overlay.visible {
  display: block;
}

.floating-toc-overlay .overlay-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75em;
}

.floating-toc-overlay ol {
  padding-left: 1.25em;
  margin: 0;
  list-style: decimal;
}

.floating-toc-overlay li {
  margin-bottom: 0.4em;
}

.floating-toc-overlay a {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.floating-toc-overlay a:hover {
  color: var(--accent);
}

.floating-toc-overlay a.active {
  color: var(--accent);
  font-weight: 600;
}

/* ============================================
   POST PAGE: Share Links
   ============================================ */
.share-links {
  margin-bottom: 1em;
}

#share-buttons {
  display: inline-flex !important;
  gap: 0.25em;
  vertical-align: middle;
}

#share-buttons > div {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease;
}

#share-buttons > div:hover {
  background: var(--bg-surface);
}

#share-buttons > div > svg {
  height: 14px;
  fill: var(--text-muted);
  transition: fill 0.2s ease;
  margin: 0;
}

/* ============================================
   POST PAGE: Post Navigation
   ============================================ */
.post_navi {
  display: flex;
  gap: 1em;
  margin-top: 2em;
}

.post_navi-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.3em;
}

.post_navi .post_navi-item {
  flex: 1;
  padding: 1em 1.25em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary) !important;
  text-decoration: none;
  transition: all 0.2s ease;
  position: relative;
}

.post_navi .post_navi-item:hover {
  border-color: var(--card-hover-border);
  box-shadow: var(--shadow-sm);
}

.post_navi .post_navi-item span {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.post_navi .nav_prev {
  text-align: left;
}

.post_navi .nav_next {
  text-align: right;
}

.post_navi .post_navi-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5em;
  opacity: 0.2;
}

.post_navi .nav_prev .post_navi-arrow {
  left: 0.3em;
}

.post_navi .nav_next .post_navi-arrow {
  right: 0.3em;
}

/* ============================================
   ARCHIVE PAGE
   ============================================ */
.archive-list h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-secondary);
  text-transform: capitalize;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  border: none;
  padding: 0;
}

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

.archive-list li {
  padding: 0.5em 0;
  border-bottom: 1px solid var(--border-light);
}

.archive-list li a {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.archive-list li a:hover {
  color: var(--accent);
}

/* ============================================
   SITE FOOTER
   ============================================ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2em 1.5em;
  margin-top: 3em;
  background: var(--bg-primary);
  transition: background-color 0.3s ease;
}

.site-footer .wrapper {
  max-width: var(--content-width);
  margin: 0 auto;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1em;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1em;
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-links a svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Hide minima's default footer columns */
.footer-col-wrapper, .footer-col {
  display: none;
}

/* ============================================
   BOOKSHELF
   ============================================ */
.bookshelf-intro {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2em;
  max-width: 75ch;
}

.bookshelf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25em;
}

.book-card {
  display: flex;
  gap: 1em;
  padding: 1.25em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-primary);
  transition: all 0.2s ease;
  color: var(--text-primary);
}

.book-card:hover {
  border-color: var(--card-hover-border);
  border-left: 3px solid var(--heading-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.book-card-cover {
  flex: 0 0 auto;
  width: 64px;
  height: 92px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.book-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: 0;
}

.book-card-cover--placeholder,
.book-header-cover--placeholder {
  background: linear-gradient(135deg, var(--accent-light), var(--bg-surface));
  border: 1px solid var(--border);
}

.book-card-body {
  min-width: 0;
}

.book-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.2em;
  line-height: 1.35;
  color: var(--text-primary);
}

.book-card:hover .book-card-title {
  color: var(--accent);
}

.book-card-author {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0 0 0.55em;
}

.book-card-meta,
.book-meta {
  display: flex;
  align-items: center;
  gap: 0.6em;
  flex-wrap: wrap;
  margin-bottom: 0.55em;
}

.book-status {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.2em 0.65em;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--tag-bg);
  color: var(--tag-text);
}

.book-status--read,
.book-status--finished {
  background: var(--accent-secondary-light);
  color: var(--accent-secondary-text);
}

.book-status--reading,
.book-status--in-progress {
  background: var(--accent-tertiary-light);
  color: var(--accent-tertiary-text);
}

.book-rating {
  font-size: 0.85rem;
  color: var(--accent-tertiary);
  letter-spacing: 0.05em;
}

.book-card-summary {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- Breadcrumb --- */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5em;
  display: flex;
  align-items: center;
  gap: 0.5em;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb-sep {
  color: var(--text-muted);
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
}

/* --- Book page header --- */
.book-header {
  display: flex;
  gap: 1.5em;
  align-items: flex-start;
  margin-bottom: 2em;
  padding-bottom: 1.5em;
  border-bottom: 1px solid var(--border);
}

.book-header-cover {
  flex: 0 0 auto;
  width: 96px;
  height: 138px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.book-header-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: 0;
}

.book-title {
  font-size: 1.8rem;
  margin: 0 0 0.15em;
}

.book-author {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0 0 0.7em;
}

.book-summary {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0.3em 0 0;
}

/* View on Amazon button */
.amazon-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  margin-top: 1em;
  padding: 0.5em 1em;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s ease;
}

.amazon-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-sm);
}

/* Coming-soon empty state on a book page */
.book-empty {
  text-align: center;
  padding: 2.5em 1.5em;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg-surface);
  margin-bottom: 2em;
}

.book-empty-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--heading-accent);
  margin: 0 0 0.4em;
}

.book-empty-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

.book-section-heading {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--heading-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  padding: 0;
  margin: 0 0 1em;
}

/* --- Chapter list --- */
.chapter-list {
  display: flex;
  flex-direction: column;
  gap: 0.6em;
  margin-bottom: 2.5em;
}

.chapter-row {
  display: flex;
  align-items: center;
  gap: 1em;
  padding: 0.85em 1.15em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-primary);
  transition: all 0.2s ease;
  color: var(--text-primary);
}

.chapter-row:hover {
  border-color: var(--card-hover-border);
  border-left: 3px solid var(--heading-accent);
  box-shadow: var(--shadow-sm);
  transform: translateX(2px);
}

.chapter-index {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--heading-accent);
  font-size: 0.8rem;
  font-weight: 600;
}

.chapter-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1 1 auto;
}

.chapter-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
}

.chapter-row:hover .chapter-title {
  color: var(--accent);
}

.chapter-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15em;
}

.chapter-arrow {
  flex: 0 0 auto;
  color: var(--text-muted);
  font-size: 1.3rem;
  line-height: 1;
}

/* --- Back link --- */
.book-back {
  margin-top: 2.5em;
  padding-top: 1.5em;
  border-top: 1px solid var(--border);
}

.book-back-link {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.book-back-link:hover {
  color: var(--accent);
}

.bookshelf-empty {
  color: var(--text-muted);
  font-style: italic;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  body {
    font-size: 16px;
  }

  .hero h1 {
    font-size: 1.4rem;
  }

  .hero .tagline {
    font-size: 1rem;
  }

  .post-title {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  .post_navi {
    flex-direction: column;
  }

  .post_navi .post_navi-item {
    width: 100%;
    text-align: left !important;
  }

  .post_navi .post_navi-arrow {
    display: none;
  }

  .floating-toc-overlay {
    right: 1em;
    left: 1em;
    width: auto;
  }

  .floating-toc-btn {
    bottom: 1.5em;
    right: 1.5em;
  }

  .site-nav .trigger {
    gap: 1em;
  }

  .category-filter {
    gap: 0.4em;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  /* Mobile nav */
  .site-header .wrapper {
    padding: 0;
  }

  pre {
    font-size: 0.8em;
    padding: 1em;
    border-radius: var(--radius-sm);
  }

  table {
    font-size: 0.85em;
  }

  .external-card {
    padding: 0.75em 1em;
  }

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

  .book-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1em;
  }

  .content-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .post-card {
    padding: 1.15em;
  }
}

/* ============================================
   UTILITY: Smooth scroll
   ============================================ */
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1em);
}

/* ============================================
   MINIMA OVERRIDES
   ============================================ */
/* Override minima's default wrapper width */
.wrapper {
  max-width: var(--content-width);
  padding-left: 0;
  padding-right: 0;
}

/* Override minima's post list */
.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  border-bottom: none;
  padding: 0;
  margin: 0;
}

/* Override minima link colors in content */
.post-content a, .e-content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent-light);
  text-underline-offset: 2px;
}

.post-content a:hover, .e-content a:hover {
  text-decoration-color: var(--accent);
}

/* Strong/Bold */
strong {
  font-weight: 600;
  color: var(--text-primary);
}

/* Emphasis */
em {
  color: var(--text-secondary);
}

/* View counter badge - keep it subtle */
.post-content > p:first-child img[src*="hitscounter"] {
  border-radius: var(--radius-sm);
}