/* ==========================================================
   Article Reading v1
   Modern, high-density reading for algorithm notes and
   ordinary posts while preserving Fluid Fold / code blocks.
   ========================================================== */

/* Long links and images should never break the layout */
.markdown-body a {
  overflow-wrap: anywhere;
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
}

/* Inline code */
.markdown-body code {
  font-family: var(--site-font-mono);
  font-size: 0.88em;
  padding: 0.16em 0.38em;
  background: var(--site-accent-soft);
  border-radius: 6px;
}

/* Code blocks */
.markdown-body pre,
.markdown-body figure.highlight {
  border: 1px solid rgba(120, 120, 140, 0.18);
  border-radius: var(--site-radius-sm);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03), 0 8px 20px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

.markdown-body figure.highlight table {
  border: 0;
  background: transparent;
}

.markdown-body figure.highlight td {
  border: 0;
}

.markdown-body figure.highlight td.gutter {
  background: var(--highlight-bg-color);
}

.markdown-body figure.highlight td.gutter pre {
  padding: 1.15rem 0.65rem 1.15rem 1rem;
  text-align: right;
  color: rgba(255, 255, 255, 0.38);
  background: transparent;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.markdown-body figure.highlight td.gutter pre span.line {
  color: rgba(255, 255, 255, 0.38);
}

.markdown-body figure.highlight td.code > pre {
  padding: 1.15rem 1.1rem;
  border-radius: 0;
}

.markdown-body pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
}

/* Code widget / language label / copy button */
.markdown-body .code-widget {
  position: absolute;
  top: 0.45rem;
  right: 0.55rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  padding: 0.18rem 0.5rem;
  font-family: var(--site-font-ui);
  font-size: 0.66rem;
  font-weight: 650;
  letter-spacing: 0.07em;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  opacity: 0.9;
  transition: color 0.18s ease, background-color 0.18s ease, opacity 0.18s ease;
}

.markdown-body .code-widget:hover {
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.12);
  opacity: 1;
}

.markdown-body .code-widget i {
  font-size: 0.72rem;
  margin-right: 0;
}

/* Tables */
.markdown-body > table,
.markdown-body .callout-content > table {
  display: block;
  width: max-content;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.markdown-body table {
  border-collapse: collapse;
}

.markdown-body th,
.markdown-body td {
  border-color: var(--site-border);
}

/* Math */
.markdown-body .katex-display {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  padding: 0.25rem 0;
}

/* Blockquote */
.markdown-body blockquote {
  margin: 1.4em 0;
  padding: 0.7rem 1.1rem;
  color: var(--site-text-secondary);
  background: var(--site-surface-soft);
  border-left: 3px solid var(--site-accent);
  border-radius: 0 var(--site-radius-sm) var(--site-radius-sm) 0;
}

/* Fluid Fold: keep compatible, slightly modernized */
.fold {
  margin: 1.2rem 0;
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-sm);
  background: var(--site-surface);
  overflow: hidden;
}

.fold-title {
  padding: 0.65rem 0.9rem;
  font-family: var(--site-font-ui);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--site-text);
  background: var(--site-surface-soft);
  border-bottom: 1px solid transparent;
  cursor: pointer;
}

.fold-title:hover {
  color: var(--site-accent);
}

.fold-title.collapsed {
  border-bottom-color: transparent;
}

.fold-collapse.collapse.show .fold-content {
  padding: 0.8rem 0.9rem;
}

/* TOC */
.sidebar #toc {
  padding: 1rem 0.75rem;
  background: transparent;
  border: 0;
}

.sidebar .toc-header {
  font-family: var(--site-font-ui);
  font-size: 0.82rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  color: var(--site-text-secondary);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.sidebar .toc-body {
  font-size: 0.88rem;
  line-height: 1.7;
}

.sidebar .toc-body a {
  color: var(--site-text-secondary);
}

.sidebar .toc-body a:hover,
.sidebar .toc-body .is-active-link {
  color: var(--site-accent);
}

/* Light scrollbars for wide tables / formulas */
.markdown-body > table::-webkit-scrollbar,
.markdown-body .callout-content > table::-webkit-scrollbar,
.markdown-body .katex-display::-webkit-scrollbar {
  height: 6px;
}

.markdown-body > table::-webkit-scrollbar-thumb,
.markdown-body .callout-content > table::-webkit-scrollbar-thumb,
.markdown-body .katex-display::-webkit-scrollbar-thumb {
  background: rgba(111, 112, 130, 0.4);
  border-radius: 999px;
}

/* Task lists: Markdown remains the only source of completion state. */
.markdown-body ul.contains-task-list {
  padding-left: 0;
  list-style: none;
}

.markdown-body li > ul.contains-task-list {
  margin-left: 1.45rem;
}

.markdown-body li.task-list-item {
  list-style: none;
}

.markdown-body .task-list-item-checkbox {
  -webkit-appearance: none;
  appearance: none;
  width: 0.95rem;
  height: 0.95rem;
  margin: 0 0.55rem 0 0 !important;
  vertical-align: -0.13em;
  border: 1.5px solid var(--site-border-strong);
  border-radius: 0.22rem;
  background: var(--site-surface);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 0.62rem;
  cursor: default;
  opacity: 1;
}

.markdown-body .task-list-item-checkbox:checked {
  border-color: var(--site-accent);
  background-color: var(--site-accent);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='m2.1 6.1 2.2 2.2 5.5-5.1' fill='none' stroke='white' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.8'/%3E%3C/svg%3E");
}

.markdown-body .task-list-item-checkbox:disabled {
  cursor: default;
  opacity: 1;
}