/* 3-column layout: posts nav | content | about */
@media (min-width: 45rem) {
  .page {
    grid-template-areas:
      "header  header  header"
      "nav     body    aside"
      "footer  footer  footer" !important;
    grid-template-columns: 18rem minmax(0, 1fr) 12rem !important;
    max-width: 76rem !important;
    grid-column-gap: 1.5rem !important;
  }
}

/* Left nav sidebar */
.page__nav-sidebar {
  grid-area: nav;
  color: var(--off-fg);
  position: sticky;
  top: 1rem;
  overflow-y: auto;
  max-height: 95vh;
  font-size: 0.8rem;
}

.page__nav-sidebar hr {
  border: none;
  border-top: 1px solid var(--muted);
  opacity: 0.3;
  margin: 0.6rem 0;
}

.nav-sidebar__label {
  color: var(--muted);
  font-size: 0.8rem;
  display: block;
  margin-bottom: 0.3rem;
}

.nav-sidebar__postlist {
  margin: 0;
  padding: 0 0 0 1.2rem;
}

.nav-sidebar__postlist li {
  margin: 0.2rem 0;
  line-height: 1.4;
}

.nav-sidebar__postlist li a {
  color: var(--link);
}

.nav-sidebar__postlist li.active a {
  font-weight: bold;
  color: var(--highlight);
}

.nav-sidebar__section {
  margin-bottom: 0.3rem;
}

.nav-sidebar__footer {
  margin-top: 1rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--muted);
  font-size: 0.7rem;
  color: var(--muted);
  line-height: 1.4;
}

.nav-sidebar__footer p {
  margin: 0.15rem 0;
}

.nav-sidebar__footer a {
  color: var(--muted);
}

.nav-sidebar__footer a:hover {
  color: var(--highlight);
}

@media (max-width: 44.99rem) {
  .page__nav-sidebar {
    display: none;
  }
}

/* Action bar (copy, share) */
.copy-page-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0.8rem 0 1.2rem;
  flex-wrap: wrap;
}

.copy-page-actions__sep {
  margin-left: auto;
}

.copy-page-button {
  appearance: none;
  border: 1px solid var(--muted);
  background: var(--bg);
  color: var(--fg);
  padding: 0.4rem 0.7rem;
  font-size: 0.85rem;
  font-family: monospace;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: border-color 0.15s, background-color 0.15s;
}

.copy-page-button:hover,
.copy-page-button.copied {
  border-color: var(--highlight);
  background: var(--highlight);
  color: var(--bg);
}

.copy-page-button.secondary {
  background: transparent;
}

.copy-page-button.secondary:hover {
  background: var(--highlight);
  color: var(--bg);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  background: var(--inner-bg);
  color: var(--logo);
  border: 1px solid var(--logo);
  padding: 0.5rem 1.2rem;
  font-size: 0.85rem;
  font-family: var(--font-monospace);
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 999;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ASCII profile */
.nav-sidebar__ascii-profile {
  margin: 0 0 0.2rem;
  padding: 0 !important;
  background: transparent !important;
  font-size: 0.8rem;
  line-height: 1.5;
  white-space: pre;
}

.ascii-prompt { color: var(--logo); }
.ascii-author { color: var(--highlight); text-decoration: none; font-weight: bold; }
.ascii-author:hover { color: var(--fg); }
.ascii-handle { color: var(--muted); }
.ascii-social { color: var(--link); text-decoration: none; font-size: 0.75rem; }
.ascii-social:hover { color: var(--hover); }

/* Right sidebar: TOC */
.page__aside {
  overflow-wrap: break-word;
  word-break: break-word;
}

.page__aside .aside__about,
.page__aside > hr {
  display: none;
}

.toc-sidebar {
  font-size: 0.8rem;
  line-height: 1.4;
}

.toc-sidebar__label {
  color: var(--muted);
  font-size: 0.75rem;
  display: block;
  margin-bottom: 0.5rem;
}

#TableOfContents ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

#TableOfContents li {
  margin: 0.15rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.6rem;
  transition: border-color 0.15s;
}

#TableOfContents li li {
  padding-left: 0.8rem;
  font-size: 0.75rem;
}

#TableOfContents a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s, opacity 0.2s;
  opacity: 0.4;
}

#TableOfContents a:hover {
  color: var(--fg);
  opacity: 0.8;
}

#TableOfContents a.active {
  color: var(--highlight);
  opacity: 1;
  font-weight: bold;
}

#TableOfContents li:has(> a.active) {
  border-left-color: var(--highlight);
}

/* Logo: terminal cursor */
.page__logo-inner {
  background: transparent !important;
  color: var(--logo) !important;
  opacity: 1 !important;
  font-weight: bold;
  font-size: 1.2rem;
  text-transform: none !important;
  display: inline-flex;
  align-items: center;
}

.page__logo-inner:before {
  content: "" !important;
  display: inline-block;
  width: 0.6em;
  height: 1em;
  background: var(--logo);
  margin-right: 0.4em;
  animation: blink 1s step-end 3;
}

.page__logo-inner:after {
  content: "" !important;
}

a.page__logo-inner:link,
a.page__logo-inner:visited {
  color: var(--logo) !important;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* Content headings */
.content__header h1 {
  font-size: 1.8rem !important;
  font-weight: 700;
  margin: 0 !important;
  padding-bottom: 0.6rem;
  border-bottom: 3px solid var(--logo);
  background: none !important;
  box-shadow: none !important;
  color: var(--fg) !important;
  line-height: 1.3;
}

.content__header {
  margin-bottom: 0.8rem;
}

.content__header h1:before,
.content__body h1:before,
.content__body h2:before,
.content__body h3:before,
.content__body h4:before,
.content__body h5:before,
.content__body h6:before {
  content: none !important;
}

.content__body h1 { font-size: 1.6rem !important; margin: 2rem 0 1rem !important; }
.content__body h2 { font-size: 1.3rem !important; margin: 1.8rem 0 0.8rem !important; }
.content__body h3 { font-size: 1.1rem !important; margin: 1.5rem 0 0.6rem !important; }
.content__body h4 { font-size: 1rem !important; margin: 1.2rem 0 0.4rem !important; }

.content__body h1,
.content__body h2,
.content__body h3,
.content__body h4 {
  color: var(--fg);
  font-weight: 700;
}

/* Heading anchor links */
.heading-anchor {
  color: var(--link) !important;
  text-decoration: none !important;
  font-weight: 400;
  transition: color 0.15s;
}

.heading-anchor:before {
  content: "// ";
}

h3 > .heading-anchor:before,
h4 > .heading-anchor:before {
  content: "# ";
  color: var(--muted) !important;
  opacity: 0;
  transition: opacity 0.15s;
}

.content__body h3:hover .heading-anchor:before,
.content__body h4:hover .heading-anchor:before {
  opacity: 0.6;
}

.heading-anchor:hover {
  color: var(--highlight) !important;
}

/* Code blocks */
.code-block-wrapper {
  position: relative;
  margin: 0 0 1.5rem;
}

.code-block-wrapper pre {
  border: 1px solid var(--muted);
  border-radius: 4px;
  padding: 1.2rem !important;
  margin: 0;
  overflow-x: auto;
}

.code-copy-btn {
  position: absolute;
  top: 0.4rem;
  right: 0.4rem;
  appearance: none;
  border: 1px solid var(--muted);
  background: var(--bg);
  color: var(--off-fg);
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  font-family: var(--font-monospace);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, background-color 0.15s, border-color 0.15s;
  border-radius: 3px;
  z-index: 1;
}

.code-block-wrapper:hover .code-copy-btn {
  opacity: 1;
}

.code-copy-btn:hover {
  border-color: var(--highlight);
  background: var(--highlight);
  color: var(--bg);
}

.code-copy-btn.copied {
  border-color: var(--logo);
  background: var(--logo);
  color: var(--bg);
  opacity: 1;
}

pre code.hljs {
  background: transparent !important;
  color: inherit;
  padding: 0;
}

.content__body code:not(pre code) {
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}

/* Article readability */
.page__body {
  background-color: transparent !important;
  box-shadow: none !important;
}

.content__body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--off-fg);
  max-width: 42rem;
}

.content__body p {
  margin: 0 0 1rem;
}

.content__body ul,
.content__body ol {
  margin: 0 0 1.8rem;
  line-height: 1.75;
}

.content__body li {
  margin: 0.3rem 0;
}

.content__body blockquote {
  color: var(--muted);
  font-style: italic;
  margin: 0 0 1.8rem 1.5rem;
}

img {
  max-width: 100%;
  height: auto;
}