/* ============================================================
   Custom design layer: navy accent + classy sidebar card
   Loaded after main.css in head.html. Overrides CSS variables
   and adds sidebar/section polish.
   ============================================================ */

:root {
  --global-base-color: #1f3a5f;
  --global-link-color: #1f5c8b;
  --global-link-color-hover: #16324f;
  --global-link-color-visited: #3a6ea5;
  --global-masthead-link-color-hover: #1f3a5f;
  --global-border-color: #d8e2ee;
  --global-code-background-color: #f6f8fb;
}

html[data-theme="dark"] {
  --global-base-color: #93b4d8;
  --global-link-color: #8ab4d8;
  --global-link-color-hover: #b0cde8;
  --global-link-color-visited: #7fb3d5;
  --global-border-color: #243049;
  --global-code-background-color: #16213a;
}

/* Sidebar: avatar ring + sane size (theme renders it oversized) */
.author__avatar img {
  border: 3px solid var(--global-base-color, #1f3a5f);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(31, 58, 95, 0.18);
  width: 130px;
  height: 130px;
}

/* Sidebar: theme JS forces position:fixed which overlaps the footer on short
   pages, and adds 65px inline padding. Static + content-height + a height cap
   guarantees the sidebar can never collide with the footer at any viewport.
   Scrollbar hidden (wheel/touch still scroll); desc gets breathing room. */
.sidebar.sticky {
  position: static !important;
  align-self: start;
  padding-top: 0 !important;
  max-height: calc(100vh - 10em);
  overflow-y: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.sidebar.sticky::-webkit-scrollbar {
  width: 0;
  height: 0;
  display: none;
}

.sidebar .author__content {
  padding-right: 0.7rem;
}

@media (max-width: 768px) {
  /* Mobile: sidebar stacks at top, no footer collision -> no cap, no scroll */
  .sidebar.sticky {
    max-height: none;
    overflow-y: visible;
  }
}

/* Sidebar: name + bio colors */
.author__name {
  color: var(--global-base-color, #1f3a5f);
}

.author__bio {
  color: #4b5a6a;
}

html[data-theme="dark"] .author__bio {
  color: #94a3b8;
}

/* Sidebar: icon links hover */
.author__urls li a:hover {
  color: var(--global-base-color, #1f3a5f);
}

/* Section headers: accent underline */
.archive__subtitle,
.page__inner h2 {
  color: var(--global-base-color, #1f3a5f);
}

.archive__subtitle {
  border-bottom: 2px solid var(--global-border-color, #d8e2ee);
  padding-bottom: 0.35rem;
}

/* Footer: quiet */
.page__footer-copyright {
  color: #6b7280;
  font-size: 0.85em;
}

/* ---------- Blog list cards with thumbnails ---------- */

.blog-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.blog-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  border: 1px solid var(--global-border-color, #d8e2ee);
  border-radius: 12px;
  padding: 0.85rem;
  background: var(--global-code-background-color, #f6f8fb);
  color: #1f2937;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.blog-item:hover {
  border-color: var(--global-base-color, #1f3a5f);
  box-shadow: 0 2px 8px rgba(31, 58, 95, 0.08);
  text-decoration: none;
}

html[data-theme="dark"] .blog-item {
  background: #16213a;
  color: #e5e7eb;
}

.blog-thumb {
  width: 110px;
  height: 82px;
  object-fit: cover;
  border-radius: 8px;
  flex: 0 0 auto;
  border: 1px solid var(--global-border-color, #d8e2ee);
}

.blog-body {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}

.blog-title {
  font-weight: 700;
}

.blog-date {
  font-size: 0.8rem;
  color: #6b7280;
}

html[data-theme="dark"] .blog-date {
  color: #94a3b8;
}

.blog-excerpt {
  font-size: 0.9rem;
  color: #6b7280;
}

html[data-theme="dark"] .blog-excerpt {
  color: #94a3b8;
}

@media (max-width: 480px) {
  .blog-thumb {
    width: 84px;
    height: 64px;
  }
}

/* ---------- Sidebar scroll-down hint arrow ---------- */

.sidebar {
  position: relative;
}

.sidebar-scroll-hint {
  position: sticky;
  bottom: 8px;
  width: 26px;
  height: 26px;
  margin: 6px auto 0;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid #d8e2ee;
  color: #1f3a5f;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  pointer-events: none;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
  z-index: 5;
}

html[data-theme="dark"] .sidebar-scroll-hint {
  background: #16213a;
  border-color: #243049;
  color: #93b4d8;
}

/* Teaching page section grouping (authored vs taught) */
.teaching-section {
  font-size: 1.45em;
  font-weight: 700;
  color: #1f3a5f;
  border-bottom: 3px solid #2dd4bf;
  padding-bottom: 0.25em;
  margin-top: 2.2em;
}
.teaching-section-note {
  color: #5a6b80;
  font-style: italic;
  margin-bottom: 1.6em;
}
html[data-theme="dark"] .teaching-section { color: #e2e8f0; }
html[data-theme="dark"] .teaching-section-note { color: #94a3b8; }

/* Other courses taught list */
.teaching-subsection {
  font-size: 1.1em;
  font-weight: 700;
  color: #1f3a5f;
  margin-top: 2em;
}
.taught-list {
  columns: 2;
  -webkit-columns: 2;
  column-gap: 3em;
  list-style: none;
  padding-left: 0;
  margin-top: 0.6em;
}
.taught-list li {
  padding: 0.35em 0 0.35em 0.9em;
  border-left: 3px solid #2dd4bf;
  margin-bottom: 0.4em;
  color: #33475b;
}
html[data-theme="dark"] .teaching-subsection { color: #e2e8f0; }
html[data-theme="dark"] .taught-list li { color: #cbd5e1; border-left-color: #2dd4bf; }

/* Language switcher in masthead (EN | ID) */
.lang-nav { font-size: 0.8rem; padding: 0 0.6rem; white-space: nowrap; }
.lang-nav .lang-cur { font-weight: 700; color: #1f3a5f; }
.lang-nav .lang-sep { color: #9aa5b1; }
.lang-nav a { color: #6b7280; display: inline-block; }
.lang-nav a:hover { color: #1f3a5f; }
html[data-theme="dark"] .lang-nav .lang-cur { color: #e2e8f0; }
html[data-theme="dark"] .lang-nav a { color: #94a3b8; }
html[data-theme="dark"] .lang-nav a:hover { color: #2dd4bf; }

/* Nav = flex row (burger sits BEFORE the lang switcher, controls cluster pins
   right via auto-margin; overflow items handled by the controller in footer.html) */
.greedy-nav .visible-links button { position: static; right: auto; z-index: auto; }
.greedy-nav .visible-links { display: flex; align-items: center; }
.greedy-nav .visible-links > li { flex-shrink: 0; }
.greedy-nav .visible-links > .masthead__menu-item--lg { flex-shrink: 1; min-width: 0; }
.greedy-nav .visible-links > .masthead__menu-item--lg a { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.greedy-nav .visible-links .burger-cell { margin-left: auto; }