.blog-container {
  /* Light palette: https://coolors.co/palette/006466-065a60-0b525b-144552-1b3a4b-212f45-272640-312244-3e1f47-4d194d */
  --blog-bg: #f7f8fb;
  --blog-panel-bg: rgba(255, 255, 255, 0.92);
  --blog-soft-bg: rgba(237, 241, 247, 0.94);
  --blog-hover-bg: rgba(223, 230, 242, 0.95);
  --blog-text: #212f45;
  --blog-muted: #312244;
  --blog-link: #065a60;
  --blog-link-visited: #065a60;
  --blog-border: rgba(27, 58, 75, 0.28);
  --blog-heading-1: #006466;
  --blog-heading-2: #065a60;
  --blog-heading-3: #0b525b;
  --blog-ul-marker: #144552;
  --blog-ol-marker: #1b3a4b;
  --blog-chip-active-bg: rgba(62, 31, 71, 0.17);
  --blog-chip-active-text: #3e1f47;
  --blog-icon: #3f26d0;

  position: relative;
  display: grid;
  grid-template-columns: minmax(230px, 310px) minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr);
  grid-template-areas:
    "nav nav"
    "sidebar main";
  height: 100vh;
  overflow: hidden;
  background: var(--blog-bg);
}

:root[data-theme="dark"] .blog-container {
  /* Dark palette: https://coolors.co/palette/f3b700-faa300-e57c04-ff6201-f63e02 */
  --blog-bg: #0b0b0c;
  --blog-panel-bg: rgba(20, 15, 6, 0.88);
  --blog-soft-bg: rgba(34, 24, 6, 0.88);
  --blog-hover-bg: rgba(56, 36, 10, 0.9);
  --blog-text: #faa300;
  --blog-muted: #e57c04;
  --blog-link: #ff6201;
  --blog-link-visited: #ff6201;
  --blog-border: rgba(243, 183, 0, 0.42);
  --blog-heading-1: #f3b700;
  --blog-heading-2: #faa300;
  --blog-heading-3: #e57c04;
  --blog-ul-marker: #ff6201;
  --blog-ol-marker: #f63e02;
  --blog-chip-active-bg: rgba(243, 183, 0, 0.2);
  --blog-chip-active-text: #f3b700;
  --blog-icon: #f5bb1a;
}

.blog-container .nav-bar {
  grid-area: nav;
  position: sticky;
  top: 0;
  z-index: 25;
  min-height: 2.15rem;
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
}

.blog-container .head-buttons {
  gap: 1.1rem;
  padding-right: 0;
  justify-content: center;
  width: 100%;
  align-items: center;
}

.blog-container .head-buttons > a {
  font-size: 1.18rem;
  letter-spacing: 0.045rem;
  padding-top: 0.5rem;
}

/* Compact theme toggle, aligned beside the top-right contact panel */
.blog-container .toggle {
  position: relative;
  left: auto;
  right: auto;
  top: auto;
  width: 1.4rem;
  height: 1.4rem;
  border: 1px solid var(--blog-border);
  border-radius: 999px;
  box-shadow: none;
  background: var(--blog-soft-bg);
}

.blog-container .toggle:hover,
.blog-container .toggle.toggle-on {
  box-shadow: none;
  background: var(--blog-hover-bg);
}

.blog-container .toggle .icon-sun,
.blog-container .toggle .icon-moon {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--blog-icon);
}

.blog-left-sidebar {
  grid-area: sidebar;
  overflow-y: auto;
  padding: 0.9rem 0.9rem 1.1rem 1.35rem;
  border-right: 1px solid var(--blog-border);
  background: var(--blog-panel-bg);
}

.blog-main {
  grid-area: main;
  overflow-y: auto;
  padding: 0.95rem 1.7rem 1.35rem 1.2rem;
}

.blog-main,
.blog-left-sidebar {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--blog-text);
}

.blog-main p,
.blog-main li,
.blog-left-sidebar p,
.blog-left-sidebar li {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
  color: var(--blog-text);
  line-height: 1.52;
}

.blog-main ul,
.blog-main ol,
.blog-left-sidebar ul,
.blog-left-sidebar ol {
  font-size: 0.85rem;
  line-height: 1.46;
  padding-left: 1.2rem;
  margin-top: 0.28rem;
  margin-bottom: 0.55rem;
}

.blog-main ul,
.blog-left-sidebar ul {
  list-style: disc;
}

.blog-main ol,
.blog-left-sidebar ol {
  list-style: decimal;
}

.blog-main ul li::marker,
.blog-left-sidebar ul li::marker {
  color: var(--blog-ul-marker);
}

.blog-main ol li::marker,
.blog-left-sidebar ol li::marker {
  color: var(--blog-ol-marker);
  font-weight: 600;
}

.blog-main ol ol,
.blog-left-sidebar ol ol {
  list-style: decimal-leading-zero;
}

.blog-main ol ol ol,
.blog-left-sidebar ol ol ol {
  list-style: lower-roman;
}

.blog-main a,
.blog-main a:visited,
.blog-main a:hover,
.blog-main a:active,
.blog-left-sidebar a,
.blog-left-sidebar a:visited,
.blog-left-sidebar a:hover,
.blog-left-sidebar a:active {
  color: var(--blog-link);
  text-decoration: none;
}

.blog-main a:hover,
.blog-left-sidebar a:hover {
  text-decoration: underline;
}

.blog-main .section-title {
  font-size: 1.18rem;
  line-height: 1.24;
  margin-bottom: 0.25rem;
  color: var(--blog-heading-1);
}

.blog-main h2 {
  font-size: 0.99rem;
  line-height: 1.34;
  color: var(--blog-heading-2);
}

.blog-main h3 {
  font-size: 0.9rem;
  line-height: 1.34;
  color: var(--blog-heading-3);
}

.blog-main .blog-intro {
  font-size: 0.83rem;
  line-height: 1.46;
}

.blog-controls {
  display: grid;
  grid-template-columns: auto minmax(175px, 1fr) auto 145px auto;
  align-items: center;
  gap: 0.42rem;
  margin-top: 0.53rem;
  margin-bottom: 0.42rem;
}

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

#blog-search,
#blog-sort {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  border: 1px solid var(--blog-border);
  border-radius: 0.3rem;
  background: var(--blog-soft-bg);
  color: var(--blog-text);
  padding: 0.24rem 0.42rem;
}

.blog-result-count {
  font-size: 0.71rem;
  color: var(--blog-muted);
}

.blog-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.26rem;
  margin-bottom: 0.38rem;
}

.blog-chip {
  border: 1px solid var(--blog-border);
  background: var(--blog-soft-bg);
  color: var(--blog-link);
  border-radius: 999px;
  padding: 0.11rem 0.42rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.67rem;
  cursor: pointer;
}

.blog-chip.active {
  background: var(--blog-chip-active-bg);
  color: var(--blog-chip-active-text);
}

.blog-card {
  border-top: 1px dashed var(--blog-border);
  padding-top: 0.65rem;
  margin-bottom: 0.72rem;
}

.blog-card h2 {
  margin-bottom: 0.24rem;
}

.blog-card h2 a,
.blog-card h2 a:visited {
  color: var(--blog-heading-2);
}

.blog-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  font-size: 0.7rem;
  color: var(--blog-muted);
}

.blog-summary {
  font-size: 0.83rem;
  line-height: 1.47;
  margin-top: 0.38rem;
  color: var(--blog-text);
}

.blog-meta-tags {
  font-size: 0.75rem;
  line-height: 1.38;
}

.blog-meta-tags strong,
.blog-prereq strong,
.blog-category-line strong,
.blog-tags-line strong {
  color: var(--blog-muted);
}

.blog-meta-tags a,
.blog-meta-tags a:visited,
.blog-prereq a,
.blog-prereq a:visited,
.blog-category-line a,
.blog-category-line a:visited,
.blog-tags-line a,
.blog-tags-line a:visited {
  color: var(--blog-link);
}

.blog-post-detail {
  margin-top: 0.25rem;
}

.blog-post-header {
  position: relative;
}

/* Back button aligned on the title's center line */
.blog-title-row {
  display: flex;
  align-items: center;
  gap: 0.42rem;
}

.blog-title-row .section-title {
  margin: 0;
  padding-left: 0;
}

.blog-back-link {
  width: 1.24rem;
  height: 1.24rem;
  border-radius: 999px;
  border: 1px solid var(--blog-border);
  color: var(--blog-icon);
  background: var(--blog-soft-bg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  flex: 0 0 auto;
}

.blog-back-link:hover {
  background: var(--blog-hover-bg);
}

.blog-prereq,
.blog-category-line,
.blog-tags-line {
  font-size: 0.77rem;
  margin-top: 0.3rem;
  color: var(--blog-text);
}

.blog-toc-block {
  border-top: 1px dashed var(--blog-border);
  margin-top: 0.52rem;
  padding-top: 0.43rem;
}

.blog-toc-block nav ul {
  margin-top: 0.25rem;
  padding-left: 1.05rem;
  font-size: 0.79rem;
  line-height: 1.39;
}

.blog-post-content {
  border-top: 1px dashed var(--blog-border);
  margin-top: 0.58rem;
  padding-top: 0.52rem;
  font-size: 0.83rem;
  line-height: 1.5;
  color: var(--blog-text);
}

.blog-post-content h2 {
  font-size: 0.97rem;
  margin-top: 0.76rem;
  color: var(--blog-heading-2);
}

.blog-post-content h3 {
  font-size: 0.88rem;
  margin-top: 0.58rem;
  color: var(--blog-heading-3);
}

.blog-post-content code {
  font-size: 0.81em;
}

.blog-post-content strong {
  color: var(--blog-heading-1);
}

.blog-post-content ul {
  list-style: square;
}

.blog-post-content ul ul {
  list-style: circle;
}

.blog-post-content ol {
  list-style: decimal;
}

.blog-post-content ol ol {
  list-style: decimal-leading-zero;
}

.blog-sidebar-card {
  margin-bottom: 0.68rem;
  border-top: 1px dashed var(--blog-border);
  padding-top: 0.42rem;
}

.blog-sidebar-card h3 {
  margin-top: 0;
  margin-bottom: 0.38rem;
  font-size: 0.85rem;
  color: var(--blog-heading-2);
}

.blog-sidebar-card ul {
  margin-top: 0;
}

.blog-sidebar-accordion {
  border-top: none;
  padding-top: 0;
}

.blog-accordion-item {
  border: 1px solid var(--blog-border);
  border-radius: 0.4rem;
  margin-bottom: 0.35rem;
  background: var(--blog-soft-bg);
  overflow: hidden;
}

.blog-accordion-item > summary {
  list-style: none;
  cursor: pointer;
  padding: 0.34rem 0.46rem;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--blog-heading-2);
  position: relative;
}

.blog-accordion-item > summary::-webkit-details-marker {
  display: none;
}

.blog-accordion-item > summary::after {
  content: "+";
  position: absolute;
  right: 0.45rem;
  color: var(--blog-icon);
}

.blog-accordion-item[open] > summary::after {
  content: "-";
}

.blog-accordion-item > ul {
  margin: 0;
  padding: 0.2rem 0.75rem 0.45rem 1.1rem;
}

.blog-accordion-item > ul li {
  margin-bottom: 0.18rem;
}

/* Tags at the bottom as compact boxes */
.blog-sidebar-tags-card {
  margin-top: 0.15rem;
}

.blog-tag-box-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.24rem;
}

.blog-tag-box {
  display: inline-flex;
  align-items: center;
  gap: 0.26rem;
  padding: 0.14rem 0.32rem;
  border: 1px solid var(--blog-border);
  border-radius: 0.32rem;
  background: var(--blog-soft-bg);
  text-decoration: none;
}

.blog-tag-label {
  font-size: 8px;
  line-height: 1.15;
  color: var(--blog-link);
  text-transform: lowercase;
}

.blog-tag-count {
  font-size: 8px;
  line-height: 1.15;
  color: var(--blog-icon);
  font-weight: 700;
}

.blog-contact-panel {
  position: absolute;
  top: 0.43rem;
  right: 0.66rem;
  display: flex;
  gap: 0.1rem;
  z-index: 40;
}

.blog-contact-panel a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.12rem;
  height: 1.12rem;
  text-decoration: none;
  border: 1px solid var(--blog-border);
  border-radius: 999px;
  font-size: 0.56rem;
  color: var(--blog-icon);
  background: var(--blog-soft-bg);
}

.blog-contact-panel a:hover {
  background: var(--blog-hover-bg);
  transform: none;
}

@media (max-width: 1200px) {
  .blog-container {
    grid-template-columns: 240px 1fr;
  }

  .blog-container .head-buttons {
    padding-right: 0;
  }

  .blog-container .head-buttons > a {
    font-size: 1.08rem;
  }

  .blog-container .toggle {
    left: auto;
    right: auto;
  }
}

@media (max-width: 960px) {
  .blog-container {
    grid-template-columns: 1fr;
    grid-template-areas:
      "nav"
      "main"
      "sidebar";
  }

  .blog-left-sidebar {
    border-right: none;
    border-top: 1px solid var(--blog-border);
    padding: 0.8rem 0.95rem 0.95rem 0.95rem;
  }

  .blog-main {
    padding: 0.86rem 0.95rem 0.95rem 0.95rem;
  }

  .blog-controls {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .blog-container .head-buttons {
    padding-right: 0;
  }

  .blog-container .head-buttons > a {
    font-size: 0.95rem;
  }

  .blog-container .toggle {
    top: auto;
    left: auto;
    right: auto;
    width: 1.25rem;
    height: 1.25rem;
  }

  .blog-container .toggle .icon-sun,
  .blog-container .toggle .icon-moon {
    font-size: 0.75rem;
  }

  .blog-contact-panel {
    top: 0.4rem;
    right: 0.52rem;
  }
}