/**
 * components.css — UI Components
 * ═══════════════════════════════════════════════════════════════
 * Post cards, badges, tags, pagination, TOC, breadcrumbs,
 * lightbox, copy buttons. All flat. 1px borders. No shadows.
 * ═══════════════════════════════════════════════════════════════
 */

/* Strip bullets from UI component lists (nav, cards, tag-lists, etc.) */
.tag-list li,
.nav-desktop li,
.quick-nav li,
.post-card li,
.sidebar-toc li,
.toc-content li {
  list-style: none !important;
}

/* ── 1. Post Card ────────────────────────────────────────────── */
.post-card {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  border-right: 1px solid var(--mb-border);
  border-bottom: 1px solid var(--mb-border);
  background: var(--mb-bg);
  transition: background 0.1s;
}
.post-card:hover { background: var(--mb-surface-1); }

/* Remove double borders on grid */
/* .posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 5px;
  margin-bottom: 1.5rem;
} */
.posts-grid .post-card {
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius);
  margin: 0;
  overflow: hidden;
}
.posts-grid .post-card:last-child { border-bottom: 1px solid var(--mb-border); }

/* Card thumbnail (optional, only renders when image param is set) */
.post-card-thumb {
  margin: -1rem -1rem 0.75rem;
  height: 160px;
  overflow: hidden;
  flex-shrink: 0;
}
.post-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}
.post-card:hover .post-card-thumb img { transform: scale(1.03); }

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  background: var(--mb-bg);
  transition: background 0.1s;
}

.post-card-title a {
  color: var(--mb-text);
  text-decoration: none;
  margin-bottom: 5px;
}
.post-card-title a:hover { color: var(--mb-accent); }

.post-card-summary {
  font-size: 0.85rem;
  color: var(--mb-text-muted);
  line-height: 1.55;
  flex: 1;
  margin-bottom: 0.75rem;
}

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: auto;
}

.read-more {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: var(--mb-accent);
  text-decoration: none;
  letter-spacing: 0.05em;
}
.read-more:hover { color: var(--mb-accent-bright); }

/* ── 2. Status Badges (NEW / RECENT) ─────────────────────────── */
.badge {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  font-size: 0.65rem;
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border: 1px solid;
  border-radius: var(--pico-border-radius-sm);
  line-height: 1.4;
  flex-shrink: 0;
}

.badge-new {
  color: var(--mb-accent);
  border-color: var(--mb-accent);
  background: var(--mb-accent-bg);
}

.badge-recent {
  color: var(--mb-text-faint);
  border-color: var(--mb-border);
  background: transparent;
}

.badge-section {
  color: var(--mb-green);
  border-color: var(--mb-green);
  background: var(--mb-green-bg);
}

/* ── 3. Tag Chips ────────────────────────────────────────────── */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin: 0;
  padding: 0;
  list-style: none !important;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  font-family: "JetBrains Mono", monospace;
  color: var(--mb-text-faint);
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius-sm);
  text-decoration: none;
  line-height: 1.5;
}
/* Tag icon — filled price-tag shape, inherits currentColor via mask */
.tag-chip::before {
  content: "";
  display: inline-block;
  width: 0.85em;
  height: 0.85em;
  flex-shrink: 0;
  background-color: currentColor;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M21.41 11.58l-9-9A2 2 0 0 0 11 2H4a2 2 0 0 0-2 2v7a2 2 0 0 0 .59 1.42l9 9A2 2 0 0 0 13 22a2 2 0 0 0 1.41-.59l7-7A2 2 0 0 0 22 13a2 2 0 0 0-.59-1.42zM6.5 8A1.5 1.5 0 1 1 8 6.5 1.5 1.5 0 0 1 6.5 8z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M21.41 11.58l-9-9A2 2 0 0 0 11 2H4a2 2 0 0 0-2 2v7a2 2 0 0 0 .59 1.42l9 9A2 2 0 0 0 13 22a2 2 0 0 0 1.41-.59l7-7A2 2 0 0 0 22 13a2 2 0 0 0-.59-1.42zM6.5 8A1.5 1.5 0 1 1 8 6.5 1.5 1.5 0 0 1 6.5 8z'/%3E%3C/svg%3E");
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  mask-size: contain;
  opacity: 0.55;
  transition: opacity 0.15s;
}
.tag-chip:hover {
  color: var(--mb-accent);
  border-color: var(--mb-accent);
  background: var(--mb-accent-bg);
}
.tag-chip:hover::before { opacity: 0.85; }

.tag-chip-more {
  color: var(--mb-text-faint);
  border-style: dashed;
  cursor: default;
}
.tag-chip-more::before { display: none; }

/* ── 3.5. Featured Card (Slim, Pinned Content) ───────────────── */
.featured-card {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius);
  background: var(--mb-bg);
  transition: background 0.1s;
}
.featured-card:hover { background: var(--mb-surface-1); }

.featured-card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  justify-content: space-between;
}

.featured-card-title {
  flex: 1;
  min-width: 0;
}
.featured-card-title a {
  color: var(--mb-text);
  text-decoration: none;
  font-weight: 500;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.featured-card-title a:hover { color: var(--mb-accent); }

.featured-tags {
  gap: 0.25rem;
  max-width: 100%;
}
.featured-tags .tag-chip {
  padding: 0.1rem 0.35rem;
  font-size: 0.7rem;
}

.featured-card-meta {
  font-size: 0.75rem;
  color: var(--mb-text-muted);
}

/* Tag term page – group headings */

.tag-group-heading {
  font-size: 0.7rem;
  font-family: "JetBrains Mono", monospace;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--mb-text-faint);
  border-bottom: 1px solid var(--mb-border);
  padding-bottom: 0.35rem;
  margin: 2rem 0 1rem;
}

/* ── 4. Breadcrumbs ──────────────────────────────────────────── */
.breadcrumbs {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-family: "JetBrains Mono", monospace;
  color: var(--mb-text-faint);
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
  overflow: visible;
}
.breadcrumbs a {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--mb-text-faint);
  text-decoration: none;
}
.breadcrumbs .current {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--mb-text-muted);
}
.breadcrumbs .sep { color: var(--mb-border-focus); }

/* Icon wrapper */
.bc-icon {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}
.bc-svg {
  width: 13px;
  height: 13px;
  stroke: currentColor;
}

/* Folder: show closed by default, open on hover */
.icon-open { display: none; }
.breadcrumbs a:hover .icon-open,
.section-title:hover .icon-open   { display: block; }
.breadcrumbs a:hover .icon-closed,
.section-title:hover .icon-closed { display: none; }

/* Lift + accent colour on hover */
.breadcrumbs a:hover            { color: var(--mb-accent); }
.breadcrumbs a:hover .bc-icon   { transform: translateY(-1.5px); }

@media (max-width: 560px) {
  .breadcrumbs .current {
    align-items: flex-start;
  }

  .breadcrumbs .current .bc-icon {
    margin-top: 0.18em;
  }
}

/* ── 5. Table of Contents ────────────────────────────────────── */
.toc-section {
  margin-bottom: 1.5rem;
  overflow: hidden;
  background: linear-gradient(180deg, var(--mb-surface-1) 0%, var(--mb-bg) 100%);
  box-shadow: none;
}

/* Inline accordion: hidden on large screens */
.toc-inline {
  display: block;
}
@media (min-width: 1024px) {
  .toc-inline {
    display: none;
  }
}

/* ── Sidebar TOC: grid-column tab strip + expandable panel ───── */

/* Hidden on mobile */
#toc-sidebar {
  display: none;
}

@media (min-width: 1024px) {
  #toc-sidebar {
    display: flex;
    flex-direction: row;
    align-self: stretch;
    border: none;
  }

  /* The tab — a small chip pinned to top of the aside column */
  .toc-drawer-tab {
    flex-shrink: 0;
    width: 52px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    white-space: nowrap;
    padding: 0.3rem 0.55rem;
    background: none;
    border-top: 1px solid var(--mb-border);
    border-right: 1px solid var(--mb-border);
    border-bottom: 1px solid var(--mb-border);
    border-left: none;
    border-radius: 2px;
    outline: none;
    box-shadow: none;
    cursor: pointer;
    color: var(--mb-accent);
    font-family: "JetBrains Mono", monospace;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: opacity 0.15s;
    user-select: none;
    position: sticky;
    top: calc(var(--site-header-h, 60px) + 12px);
    height: fit-content;
    align-self: start;
  }
  .toc-drawer-tab:focus {
    outline: none;
    box-shadow: none;
  }
  .toc-drawer-tab:hover {
    opacity: 0.75;
  }
  /* Hide the tab once the panel is open */
  .content-layout.toc-open .toc-drawer-tab {
    display: none;
  }

  /* The content panel — hidden until .toc-open */
  .toc-sidebar-inner {
    display: none;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.75rem 0.75rem 1.5rem 0.5rem;
    scrollbar-width: thin;
    scrollbar-color: var(--mb-border) transparent;
    position: sticky;
    top: calc(var(--site-header-h, 60px) + 12px);
    max-height: calc(100vh - var(--site-header-h, 60px) - 24px);
    align-self: start;
  }
  .content-layout.toc-open .toc-sidebar-inner {
    display: block;
  }
}

/* Sidebar TOC wrapper */
.sidebar-toc {
  font-size: 0.8rem;
}

.sidebar-toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--mb-border);
}

.sidebar-toc-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  color: var(--mb-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-toc-close {
  background: none;
  border: none;
  outline: none;
  box-shadow: none;
  padding: 0.1rem 0.25rem;
  font-size: 0.75rem;
  color: var(--mb-text-faint);
  cursor: pointer;
  line-height: 1;
  transition: color 0.15s;
}
.sidebar-toc-close:focus {
  outline: none;
  box-shadow: none;
}
.sidebar-toc-close:hover {
  color: var(--mb-accent);
}

/* Sidebar TOC content (reuses .toc-content styles) */
.sidebar-toc-content {
  padding: 0;
  background: transparent;
}
.sidebar-toc-content.toc-content {
  max-height: none;
  overflow: visible;
}

.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0.95rem;
  background: var(--mb-surface-1);
  border: 1px solid var(--mb-border);
  cursor: pointer;
  user-select: none;
  outline: none;
}
.toc-header:focus,
.toc-header:focus-visible {
  outline: none;
  box-shadow: none;
}
.toc-header h3 {
  margin: 0;
  font-size: 0.8rem;
  font-family: "JetBrains Mono", monospace;
  font-weight: 600;
  color: var(--mb-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  padding: 0;
}
.toc-header h3::before { content: ""; }

.toc-toggle {
  font-size: 0.75rem;
  color: var(--mb-text-faint);
  transition: transform 0.15s ease, color 0.15s ease;
}
.toc-header[aria-expanded="true"] .toc-toggle {
  color: var(--mb-accent);
}
.toc-header[aria-expanded="false"] .toc-toggle {
  transform: rotate(-90deg);
}

.toc-content {
  padding: 0.75rem 0.85rem 0.85rem;
  background: var(--mb-bg);
  max-height: 24rem;
  overflow: scroll;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--mb-border-focus) transparent;
  -webkit-overflow-scrolling: touch;
}
.toc-content.collapsed { display: none; }

.toc-content nav {
  display: block;
  overflow: visible;
}

.toc-content nav ul {
  display: block;
  list-style: none;
  padding: 0;
  margin: 0;
}
.toc-content nav li {
  position: relative;
  display: block;
  margin: 0;
  padding: 0;
}
.toc-content nav > ul > li {
  margin: 0.15rem 0 0.8rem;
}
.toc-content nav > ul > li + li {
  padding-top: 0.15rem;
}
.toc-content nav ul ul {
  margin-top: 0.3rem;
  margin-left: 0.45rem;
  padding-left: 0.9rem;
  border-left: 1px solid var(--mb-border);
}
.toc-content nav ul ul li {
  margin: 0.2rem 0;
}

.toc-content nav a {
  font-size: 0.9rem;
  color: var(--mb-text-muted);
  text-decoration: none;
  display: block;
  line-height: 1.5;
  padding: 0.22rem 0.4rem 0.22rem 0.95rem;
  overflow-wrap: anywhere;
  border-radius: var(--pico-border-radius-sm);
  transition: color 0.12s ease, background-color 0.12s ease, border-color 0.12s ease;
}
.toc-content nav > ul > li > a {
  font-weight: 500;
  color: var(--mb-text);
}
.toc-content nav > ul > li > ul > li > a {
  font-size: 0.86rem;
  font-weight: 400;
  color: var(--mb-text-muted);
}
.toc-content nav > ul > li > ul > li > ul > li > a {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--mb-text-faint);
}
.toc-content nav a:hover {
  color: var(--mb-accent);
  background: var(--mb-accent-bg);
}
.toc-content nav a:focus-visible {
  outline: 1px solid var(--mb-border-focus);
  outline-offset: 1px;
  color: var(--mb-accent);
  background: var(--mb-accent-bg);
}
.toc-content::-webkit-scrollbar {
  width: 7px;
}
.toc-content::-webkit-scrollbar-track {
  background: transparent;
}
.toc-content::-webkit-scrollbar-thumb {
  background: var(--mb-border);
  border-radius: 8px;
}
.toc-content::-webkit-scrollbar-thumb:hover {
  background: var(--mb-border-focus);
}

@media (max-width: 900px) {
  .toc-content {
    max-height: 18rem;
  }
  .toc-content nav a {
    font-size: 0.85rem;
  }
  .toc-content nav > ul > li > ul > li > a {
    font-size: 0.81rem;
  }
  .toc-content nav > ul > li > ul > li > ul > li > a {
    font-size: 0.78rem;
  }
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  scroll-margin-top: calc(var(--site-header-h, 60px) + 16px);
}

.post-content a {
  color: var(--mb-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.post-content a:hover,
.post-content a:active,
.post-content a:focus {
  color: var(--mb-accent);
}

/* Heading anchor links (render-heading.html hook) */
.heading-anchor {
  display: inline-flex;
  align-items: center;
  opacity: 0;
  margin-left: 0.35em;
  color: var(--mb-text-faint);
  text-decoration: none;
  vertical-align: middle;
  transition: opacity 0.15s ease, color 0.15s ease;
  flex-shrink: 0;
}

@media (hover: hover) and (pointer: fine) {
  h1:hover .heading-anchor,
  h2:hover .heading-anchor,
  h3:hover .heading-anchor,
  h4:hover .heading-anchor,
  h5:hover .heading-anchor,
  h6:hover .heading-anchor { opacity: 1; }

  .heading-anchor:hover { color: var(--mb-accent); }
}

@media (hover: none), (pointer: coarse) {
  .post-content .heading-anchor {
    display: none;
  }
}

.heading-icon {
  width: 0.9em;
  height: 0.9em;
  stroke: currentColor;
}

/* ── Google AdSense unit ────────────────────────────────────── */
.post-ad-unit {
  margin: 2.5rem 0 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--mb-border);
  min-height: 100px;
}

.build-info {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  color: var(--mb-text-faint);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  line-height: 1.4;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  margin-top: 1.5rem;
  border-top: 1px solid var(--mb-border);
  gap: 0.5rem;
  flex-wrap: wrap;
}

.pagination-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-family: "JetBrains Mono", monospace;
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius-sm);
  color: var(--mb-text-muted);
  text-decoration: none;
  background: transparent;
}
.tag-list a {
  text-decoration: none;
}

.pagination-btn:hover {
  background: var(--mb-surface-2);
  color: var(--mb-text);
  border-color: var(--mb-border-focus);
}
.pagination-btn.disabled {
  opacity: 0.35;
  pointer-events: none;
}

.pagination-info {
  font-size: 0.75rem;
  font-family: "JetBrains Mono", monospace;
  color: var(--mb-text-faint);
}

/* ── 7. Post Meta Header (single.html) ───────────────────────── */
.post-meta-header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.post-meta-date {
  font-size: 0.78rem;
  font-family: "JetBrains Mono", monospace;
  color: var(--mb-text-faint);
}

.post-title-single {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
  color: var(--mb-text);
}

/* ── 7.5. Download Actions ──────────────────────────────────── */
.post-meta-header .download-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: nowrap;
  gap: 0.4rem;
  margin: 0;
  vertical-align: baseline;
}

.post-meta-header .download-actions-separator {
  color: var(--mb-border-focus);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
}

.post-meta-header .download-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  gap: 0.3em;
  min-height: 22px;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius-sm);
  background: var(--mb-surface-1);
  color: var(--mb-text-faint) !important;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem !important;
  font-weight: 400;
  line-height: 1.5;
  text-decoration: none !important;
  vertical-align: middle;
  transition: color 0.1s, border-color 0.1s, background 0.1s;
}

.post-meta-header .download-action-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 0.85em;
  height: 0.85em;
  max-width: 0.85em;
  max-height: 0.85em;
  flex-shrink: 0;
  overflow: hidden;
  opacity: 0.7;
  transition: opacity 0.15s;
}

.post-meta-header .download-action-icon svg {
  display: block;
  width: 0.85em !important;
  height: 0.85em !important;
  max-width: 0.85em !important;
  max-height: 0.85em !important;
  flex: 0 0 0.85em;
}

@media (hover: hover) {
  .post-meta-header .download-action:hover {
    color: var(--mb-accent) !important;
    border-color: var(--mb-accent);
    background: var(--mb-accent-bg);
    text-decoration: none;
  }

  .post-meta-header .download-action:hover .download-action-icon {
    opacity: 0.9;
  }
}

@media (hover: none) {
  .post-meta-header .download-action:active {
    color: var(--mb-accent) !important;
    border-color: var(--mb-accent);
    background: var(--mb-accent-bg);
  }
}

@media (max-width: 560px) {
  .post-meta-header {
    row-gap: 0.65rem;
  }

  .post-meta-header .download-actions {
    flex-basis: 100%;
    gap: 0.35rem;
    order: 2;
  }

  .post-meta-header .download-actions-separator {
    display: none;
  }

  .post-meta-header .download-action {
    min-height: 28px;
    padding: 0.2rem 0.55rem;
    font-size: 0.72rem !important;
  }

  .post-meta-header .download-action-icon,
  .post-meta-header .download-action-icon svg {
    width: 0.9em !important;
    height: 0.9em !important;
    max-width: 0.9em !important;
    max-height: 0.9em !important;
  }
}

/* ── 8. Podcast Player ───────────────────────────────────────── */
.podcast-player {
  margin: 0 0 1.25rem;
  padding: 1rem;
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius);
  background: linear-gradient(180deg, var(--mb-surface-1) 0%, var(--mb-bg) 100%);
}

.podcast-player-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}

.podcast-player-kicker {
  margin: 0 0 0.15rem;
  font-size: 0.72rem;
  font-family: "JetBrains Mono", monospace;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mb-text-faint);
}

.podcast-player-title {
  margin: 0;
  font-size: 1rem;
  font-family: "IBM Plex Sans", "Inter", sans-serif;
  color: var(--mb-text);
  border: none;
  padding: 0;
}

.podcast-player-badge {
  align-self: flex-start;
}

.podcast-player-media {
  width: 100%;
  margin: 0;
}

.podcast-player-controls {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 2.5rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.podcast-player.is-enhanced .podcast-player-media {
  display: none;
}

.podcast-player.is-enhanced .podcast-player-controls[hidden] {
  display: flex;
}

.podcast-player-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--mb-text-muted);
  cursor: pointer;
  transition: color 0.12s ease, transform 0.12s ease;
}

.podcast-player-toggle:hover {
  color: var(--mb-accent);
  transform: translateY(-1px);
}

.podcast-player-reset {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--mb-text-muted);
  cursor: pointer;
  transition: color 0.12s ease, transform 0.12s ease;
}

.podcast-player-reset:hover {
  color: var(--mb-accent);
  transform: translateY(-1px);
}

.podcast-player-toggle:focus,
.podcast-player-toggle:focus-visible,
.podcast-player-reset:focus,
.podcast-player-reset:focus-visible,
.podcast-player-seek:focus,
.podcast-player-seek:focus-visible {
  outline: none;
  box-shadow: none;
}

.podcast-control-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.15s ease, color 0.15s ease;
}

.podcast-control-svg {
  width: 1.45rem;
  height: 1.45rem;
  display: block;
  transition: transform 0.15s ease, opacity 0.15s ease;
  stroke: currentColor;
}

.podcast-player-toggle:hover .podcast-control-icon,
.podcast-player-reset:hover .podcast-control-icon {
  transform: translateY(-1.5px);
}

.podcast-control-svg-play .podcast-icon-pause {
  display: none;
}

.podcast-player-toggle.is-playing .podcast-control-svg-play .podcast-icon-play {
  display: none;
}

.podcast-player-toggle.is-playing .podcast-control-svg-play .podcast-icon-pause {
  display: block;
}

.podcast-player-reset:hover .podcast-control-svg {
  transform: rotate(-24deg);
}

.podcast-player-toggle:hover .podcast-control-svg,
.podcast-player-toggle.is-playing:hover .podcast-control-svg {
  transform: scale(1.04);
}

.podcast-player-toggle.is-playing {
  color: var(--mb-accent);
}

.podcast-control-svg-play .podcast-icon-play path,
.podcast-control-svg-play .podcast-icon-pause path {
  stroke-width: 1.5;
}

.podcast-control-svg-reset {
  width: 1.1rem;
  height: 1.1rem;
}

.podcast-player-timeline {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
}

.podcast-player-seek {
  --podcast-progress: 0%;
  --podcast-track: color-mix(in srgb, var(--mb-border) 72%, var(--mb-surface-2) 28%);
  --podcast-fill: color-mix(in srgb, var(--mb-accent) 58%, var(--mb-text) 42%);
  --podcast-thumb: var(--mb-bg);
  --podcast-thumb-ring: color-mix(in srgb, var(--mb-accent) 65%, var(--mb-border-focus) 35%);
  width: 100%;
  margin: 0;
  height: 1rem;
  padding: 0;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  cursor: pointer;
}

.podcast-player-seek:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.podcast-player-seek::-webkit-slider-runnable-track {
  height: 0.32rem;
  border-radius: 999px;
  background:
    linear-gradient(
      to right,
      var(--podcast-fill) 0,
      var(--podcast-fill) var(--podcast-progress),
      var(--podcast-track) var(--podcast-progress),
      var(--podcast-track) 100%
    );
}

.podcast-player-seek::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1rem;
  height: 1rem;
  margin-top: -0.34rem;
  border-radius: 50%;
  border: 2px solid var(--podcast-thumb-ring);
  background: var(--podcast-thumb);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--mb-bg) 82%, transparent);
  transition: transform 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}

.podcast-player-seek:hover::-webkit-slider-thumb {
  transform: scale(1.06);
  border-color: var(--mb-accent);
}

.podcast-player-seek::-moz-range-track {
  height: 0.32rem;
  border: none;
  border-radius: 999px;
  background: var(--podcast-track);
}

.podcast-player-seek::-moz-range-progress {
  height: 0.32rem;
  border-radius: 999px;
  background: var(--podcast-fill);
}

.podcast-player-seek::-moz-range-thumb {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 2px solid var(--podcast-thumb-ring);
  background: var(--podcast-thumb);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--mb-bg) 82%, transparent);
  transition: transform 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}

.podcast-player-seek:hover::-moz-range-thumb {
  transform: scale(1.06);
  border-color: var(--mb-accent);
}

.podcast-player-time {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-family: "JetBrains Mono", monospace;
  color: var(--mb-text-faint);
  line-height: 1;
  min-width: 2.6rem;
}

.podcast-player-time-current {
  text-align: right;
}

.podcast-player-time-duration {
  text-align: left;
}

@media (max-width: 640px) {
  .podcast-player {
    padding: 0.9rem;
  }

  .podcast-player-controls {
    display: grid;
    grid-template-columns: auto auto 1fr auto;
    grid-template-areas:
      "play reset . ."
      "seek seek seek seek"
      "current . . duration";
    gap: 0.55rem;
    align-items: center;
  }

  .podcast-player-toggle {
    grid-area: play;
  }

  .podcast-player-reset {
    grid-area: reset;
  }

  .podcast-player-timeline {
    grid-area: seek;
    width: 100%;
  }

  .podcast-player-time {
    min-width: 0;
    font-size: 0.72rem;
    line-height: 1.1;
  }

  .podcast-player-time-current {
    grid-area: current;
    text-align: left;
  }

  .podcast-player-time-duration {
    grid-area: duration;
    text-align: right;
  }
}

/* ── 9. Code Block Action Buttons ────────────────────────────── */
.code-action-button,
.copy-button {
  --code-action-edge: 0.4rem;
  --code-action-size: 1.85rem;
  --code-action-gap: 0.35rem;
  position: absolute;
  top: 0.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  font-family: "JetBrains Mono", monospace;
  background: var(--mb-surface-2);
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius-sm);
  color: var(--mb-text-faint);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.1s, color 0.1s;
  /* Ensure button is always above scrolling content */
  z-index: 2;
}
.copy-button {
  right: var(--code-action-edge);
  width: var(--code-action-size);
  height: var(--code-action-size);
  padding: 0;
}
.expand-code-button {
  right: calc(var(--code-action-edge) + var(--code-action-size) + var(--code-action-gap));
  width: var(--code-action-size);
  height: var(--code-action-size);
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
}
.expand-code-button svg {
  display: block;
  width: 1rem;
  height: 1rem;
}
.copy-button svg {
  display: block;
  width: 1.12rem;
  height: 1.12rem;
}
pre:hover .copy-button,
.highlight:hover .copy-button,
.pre-copy-wrapper:hover .copy-button,
pre:hover .expand-code-button,
.highlight:hover .expand-code-button,
.pre-copy-wrapper:hover .expand-code-button { opacity: 1; }
.code-action-button:hover,
.copy-button:hover { color: var(--mb-accent); border-color: var(--mb-border-focus); }
.code-action-button.copied,
.copy-button.copied { color: var(--mb-green); border-color: var(--mb-green); }

/* ── 10. Image Lightbox ──────────────────────────────────────── */
.image-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.image-lightbox.open { display: flex; }

.lightbox-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.85);
  cursor: pointer;
}

.lightbox-content {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 90vh;
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius);
  background: var(--mb-surface-1);
  overflow: hidden;
}

.lightbox-controls {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--mb-border);
  background: var(--mb-surface-2);
  font-size: 0.8rem;
}

.lightbox-close {
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius-sm);
  background: transparent;
  color: var(--mb-text-muted);
  cursor: pointer;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
}
.lightbox-close:hover {
  color: var(--mb-text);
  background: var(--mb-surface-3);
  border-color: var(--mb-border-focus);
}

.lightbox-image-container {
  overflow: auto;
}
.lightbox-image-container img {
  display: block;
  max-width: 85vw;
  max-height: 80vh;
  object-fit: contain;
}

/* ── 10. Layout toggle controls ──────────────────────────────── */
.posts-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

/* ── 11. Tags Controls ────────────────────────────────────────── */
.tags-controls {
  display: flex;
  align-items: stretch;
  margin-bottom: 1rem;
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius);
  overflow: hidden;
  background: var(--mb-surface-1);
  transition: border-color 0.1s;
}
.tags-controls:focus-within { border-color: var(--mb-border-focus); }

.tag-filter-input {
  flex: 1;
  min-width: 0;
  height: 2.25rem;
  background: transparent;
  background-image: none !important;
  border: none;
  outline: none;
  box-shadow: none;
  padding: 5px 10px !important;
  font-size: 0.875rem;
  color: var(--mb-text);
  font-family: var(--pico-font-family-sans-serif);
  --pico-border-radius: 0;
  --pico-form-element-spacing-vertical: 0;
  --pico-form-element-spacing-horizontal: 0;
  border-radius: 0;
  margin: 0;
  -webkit-appearance: none;
  appearance: none;
  margin-bottom: 0 !important;
}
.tag-filter-input::placeholder { color: var(--mb-text-faint); }

.tags-controls .sort-select {
  flex-shrink: 0;
  height: 2.25rem;
  background: var(--mb-surface-2);
  border: none;
  border-left: 1px solid var(--mb-border);
  border-radius: 0;
  color: var(--mb-text-muted);
  font-size: 0.82rem;
  font-family: "JetBrains Mono", monospace;
  padding: 0 0.75rem;
  cursor: pointer;
  outline: none;
  margin: 0;
  width: auto;
  --pico-form-element-spacing-vertical: 0;
  --pico-form-element-spacing-horizontal: 0;
  margin-bottom: 0 !important;
}
.tags-controls .sort-select:focus { border-left-color: var(--mb-border-focus); }

/* ── 12. MCQ Quiz ────────────────────────────────────────────── */
.mcq-question {
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius);
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--mb-surface-1);
}

.question-number {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: var(--mb-text-faint);
  margin-bottom: 0.4rem;
  display: block;
}

.question-text {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--mb-text);
}

.option-label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius-sm);
  margin-bottom: 0.35rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--mb-text-muted);
}
.option-label:hover { background: var(--mb-surface-2); color: var(--mb-text); }
.option-label input { margin-top: 0.1rem; flex-shrink: 0; }

.question-feedback {
  margin-top: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--pico-border-radius-sm);
  font-size: 0.85rem;
  font-family: "JetBrains Mono", monospace;
  border: 1px solid;
}
.question-feedback.correct {
  color: var(--mb-green-bright);
  border-color: var(--mb-green);
  background: var(--mb-green-bg);
}
.question-feedback.incorrect {
  color: var(--mb-red);
  border-color: var(--mb-red);
  background: var(--mb-red-bg);
}

.mcq-results {
  border: 1px solid var(--mb-border);
  border-radius: var(--pico-border-radius);
  padding: 1.25rem;
  margin-top: 1rem;
  background: var(--mb-surface-1);
  text-align: center;
}
.mcq-score {
  font-size: 2rem;
  font-weight: 700;
  font-family: "JetBrains Mono", monospace;
  color: var(--mb-accent);
}

/* ── Hero Tagline ────────────────────────────────────────────── */
.hero-tagline {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 1.1rem;
  color: var(--mb-text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.6;
  min-height: 1.8em;
  overflow: hidden;
}
.hero-tagline-prefix {
  display: inline-block;
  white-space: nowrap;
  margin-right: 0.4rem;
}
.hero-tagline-bracket {
  color: var(--mb-green);
  font-weight: bold;
}
.hero-tagline-spinner {
  color: var(--mb-text-bright);
  display: inline-block;
  width: 1ch;
  text-align: center;
  animation: ai-spinner-colors 4s ease-in-out infinite;
}

@keyframes ai-spinner-colors {
  0%   { color: var(--mb-green); }
  33%  { color: var(--mb-accent); }
  66%  { color: var(--mb-blue); }
  100% { color: var(--mb-green); }
}
.hero-tagline-brand {
  color: var(--mb-text-bright);
  font-weight: bold;
  letter-spacing: 0.05em;
  margin: 0 0.5rem;
}
.hero-tagline-sep {
  color: var(--mb-text-faint);
  margin-right: 0.5rem;
}
.hero-tagline-text {
  color: var(--mb-text);
}
.hero-tagline-cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.1em;
  background-color: var(--mb-accent);
  vertical-align: text-bottom;
  animation: tw-blink 1s step-start infinite;
  margin-left: 5px;
}
@keyframes tw-blink { 50% { opacity: 0; } }

@media (max-width: 700px) {
  .hero-tagline {
    font-size: clamp(0.92rem, 3.7vw, 1.05rem);
    line-height: 1.45;
    height: 4.35em;
    margin-bottom: 1.4rem;
  }

  .hero-tagline-prefix {
    display: block;
    margin: 0 0 0.2rem;
  }

  .hero-tagline-text {
    overflow-wrap: anywhere;
  }
}

@media (max-width: 420px) {
  .hero-tagline {
    height: 4.65em;
    margin-bottom: 1.15rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-tagline-cursor,
  .hero-tagline-spinner {
    animation: none;
  }
}

.content-disclosure {
  margin: 1rem 0 1.4rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--mb-border);
  border-left: 3px solid var(--mb-accent);
  border-radius: 6px;
  color: var(--mb-text-muted);
  background: color-mix(in srgb, var(--mb-bg-elevated) 78%, transparent);
  font-size: 0.88rem;
  line-height: 1.55;
}

.content-disclosure strong {
  color: var(--mb-text);
}