/* =========================================================
   Learn section styles
   Inherits all tokens from /assets/css/site.css
   ========================================================= */

/* ---- Breadcrumbs ---- */

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.breadcrumbs a:hover {
  color: var(--text);
}

.breadcrumb-sep {
  color: var(--border);
}

/* ---- Learn landing cards ---- */

.learn-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
}

.learn-card {
  display: grid;
  gap: 8px;
  padding: 24px;
  border: 1px solid var(--border);
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s ease;
}

.learn-card:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.learn-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.learn-list-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--divider);
}

.learn-list-item h3 {
  margin: 0;
  font-size: 1rem;
}

.learn-list-item p {
  margin-top: 6px;
  font-size: 0.92rem;
}

@media (max-width: 620px) {
  .learn-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Prose (rendered markdown) ---- */

.prose {
  max-width: 800px;
  line-height: 1.65;
  color: var(--text-paragraph);
}

.prose h1 {
  font-size: 2.2rem;
  margin: 48px 0 16px;
  color: var(--text);
}

.prose h2 {
  font-size: 1.5rem;
  margin: 40px 0 14px;
  color: var(--text);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--divider);
}

.prose h3 {
  font-size: 1.15rem;
  margin: 28px 0 10px;
  color: var(--text);
}

.prose h4 {
  font-size: 1rem;
  margin: 24px 0 8px;
  color: var(--text);
  font-family: var(--font-mono);
  font-weight: 700;
}

.prose p {
  margin: 14px 0;
  max-width: none;
}

.prose a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.prose a:hover {
  color: var(--blue-dark);
}

.prose strong {
  color: var(--text);
  font-weight: 700;
}

.prose ul,
.prose ol {
  margin: 14px 0;
  padding-left: 24px;
}

.prose li {
  margin: 6px 0;
}

.prose li + li {
  margin-top: 6px;
}

.prose img {
  display: block;
  max-width: 100%;
  margin: 24px 0;
  border: 1px solid var(--border);
}

.prose blockquote {
  margin: 18px 0;
  padding: 14px 18px;
  border-left: 3px solid var(--blue);
  background: var(--surface);
  color: var(--text-paragraph);
}

.prose blockquote p {
  margin: 0;
}

/* Code blocks */
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 2px 6px;
  background: var(--inline-code-bg);
  color: var(--inline-code-text);
}

.prose pre {
  margin: 18px 0;
  padding: 16px 18px;
  background: var(--code-bg);
  border: 1px solid var(--border);
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.5;
}

.prose pre code {
  padding: 0;
  background: none;
  color: inherit;
}

/* Tables */
.prose table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.prose th,
.prose td {
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--border);
}

.prose th {
  background: var(--surface);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text);
}

.prose td {
  color: var(--text-paragraph);
}

.prose td code {
  font-size: 0.85em;
}

.research-table,
.research-bars,
.research-figure,
.research-result-card {
  margin: 22px 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  background: var(--surface);
}

.research-table table,
.research-bars table {
  margin: 0;
  border: 0;
}

.research-table th,
.research-table td,
.research-bars th,
.research-bars td {
  border-width: 0 0 1px;
}

.research-table tr:last-child td,
.research-bars tr:last-child td {
  border-bottom: 0;
}

.research-bars td:last-child {
  min-width: 180px;
  font-family: var(--font-mono);
  color: var(--text);
}

.research-bars td:last-child::before {
  content: "";
  display: inline-block;
  width: var(--bar, 0%);
  max-width: 120px;
  height: 8px;
  margin-right: 10px;
  background: var(--blue);
}

.research-figure {
  padding: 0;
}

.research-figure figcaption,
.research-card-head h3 {
  margin: 0;
  padding: 14px 16px 0;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--text);
}

.research-note,
.research-card-head p {
  margin: 6px 16px 14px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.research-scroll {
  overflow-x: auto;
}

.research-result-card {
  padding: 0 0 12px;
}

.research-metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin: 10px 16px 4px;
  background: var(--border);
  border: 1px solid var(--border);
}

.research-metric-grid div {
  min-width: 0;
  padding: 12px;
  background: var(--bg);
}

.research-metric-grid dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.research-metric-grid dd {
  margin: 4px 0 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.research-heatmap table,
.research-trades table {
  margin: 0;
  border: 0;
}

.research-heatmap th,
.research-heatmap td,
.research-trades th,
.research-trades td {
  border-width: 0 0 1px;
  white-space: nowrap;
}

.research-heat-cell {
  position: relative;
  color: var(--text);
  background:
    linear-gradient(
      90deg,
      color-mix(in srgb, var(--blue) calc(var(--heat, 0%) * 0.75), transparent),
      color-mix(in srgb, var(--blue) calc(var(--heat, 0%) * 0.18), transparent)
    );
}

.research-scatter-plot {
  position: relative;
  height: 320px;
  margin: 16px;
  border-left: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background-image:
    linear-gradient(to right, var(--divider) 1px, transparent 1px),
    linear-gradient(to bottom, var(--divider) 1px, transparent 1px);
  background-size: 25% 100%, 100% 25%;
}

.research-point {
  position: absolute;
  left: var(--x, 0%);
  bottom: var(--y, 0%);
  width: max(8px, var(--size, 10px));
  height: max(8px, var(--size, 10px));
  border: 2px solid var(--bg);
  border-radius: 999px;
  background: var(--blue);
  transform: translate(-50%, 50%);
  box-shadow: 0 0 0 1px var(--blue-dark);
}

.research-axis {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.research-axis-x {
  right: 0;
  bottom: -24px;
}

.research-axis-y {
  top: 0;
  left: -2px;
  transform: translate(-100%, 0) rotate(-90deg);
  transform-origin: right top;
}

.research-equity-chart {
  height: 260px;
  margin: 16px 16px 10px;
  border: 1px solid var(--border);
  background-image:
    linear-gradient(to right, var(--divider) 1px, transparent 1px),
    linear-gradient(to bottom, var(--divider) 1px, transparent 1px);
  background-size: 25% 100%, 100% 25%;
}

.research-equity-chart svg {
  display: block;
  width: 100%;
  height: 100%;
}

.research-line {
  fill: none;
  stroke-width: 2.4;
  vector-effect: non-scaling-stroke;
}

.research-line-strategy {
  stroke: var(--blue);
}

.research-line-benchmark {
  stroke: var(--text-muted);
  stroke-dasharray: 5 4;
}

.research-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 0 16px 14px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.research-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.research-swatch {
  width: 18px;
  height: 3px;
  display: inline-block;
}

.research-swatch-strategy {
  background: var(--blue);
}

.research-swatch-benchmark {
  background: repeating-linear-gradient(90deg, var(--text-muted) 0 5px, transparent 5px 9px);
}

.prose hr {
  margin: 32px 0;
  border: none;
  border-top: 1px solid var(--divider);
}

.analysis-concept-card {
  margin: 22px 0;
  border: 1px solid var(--border);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--blue) 12%, transparent), transparent 42%),
    var(--surface);
}

.analysis-concept-head {
  padding: 16px 18px 0;
}

.analysis-concept-head p {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.analysis-concept-head h3 {
  margin: 0;
  font-size: 1rem;
}

.analysis-concept-body {
  padding: 8px 18px 16px;
}

.analysis-concept-body p {
  margin: 10px 0 0;
}

.analysis-concept-body ul {
  margin-bottom: 0;
}

/* ---- Blog ---- */

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.post-card {
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.15s ease;
}

.post-card:hover {
  border-color: var(--accent);
}

.post-card-image img {
  width: 100%;
  display: block;
  border-bottom: 1px solid var(--border);
}

.post-card-body {
  padding: 18px;
}

.post-card-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.post-card-body h3 {
  margin: 6px 0 0;
  font-size: 1.05rem;
}

.post-card-body h3 a {
  color: var(--text);
  text-decoration: none;
}

.post-card-body h3 a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.post-card-body p {
  margin: 8px 0 0;
  font-size: 0.92rem;
  color: var(--text-paragraph);
  max-width: none;
}

.post-date {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.post-hero {
  margin: 0 0 32px;
  border: 1px solid var(--border);
}

.post-hero img {
  display: block;
  width: 100%;
}

/* ---- Docs sidebar layout ---- */

.docs-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  min-height: calc(100vh - 65px);
}

.sidebar {
  position: sticky;
  top: 65px;
  height: calc(100vh - 65px);
  overflow-y: auto;
  padding: 24px 20px;
  border-right: 1px solid var(--divider);
  background: var(--bg);
}

.sidebar-group {
  margin-bottom: 20px;
}

.sidebar-category {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.sidebar-link {
  display: block;
  padding: 4px 0;
  font-size: 0.85rem;
  color: var(--text-paragraph);
  text-decoration: none;
}

.sidebar-link:hover {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.sidebar-link.is-active {
  color: var(--blue);
  font-weight: 700;
}

.docs-content {
  padding: 32px 40px 64px;
  overflow-x: hidden;
}

.docs-content-inner {
  max-width: 800px;
}

.docs-content-inner h1 {
  margin-top: 4px;
}

/* Docs landing page */
.docs-category-group {
  margin-bottom: 40px;
}

.docs-category-group h2 {
  font-size: 1.3rem;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--divider);
}

.docs-link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.docs-link-card {
  padding: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s ease;
}

.docs-link-card:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.docs-link-card h3 {
  margin: 0;
  font-size: 0.95rem;
}

.docs-link-card p {
  margin: 6px 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: none;
}

@media (max-width: 820px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--divider);
    padding: 16px 20px;
  }

  .docs-content {
    padding: 24px 20px 48px;
  }
}

/* ---- Glossary ---- */

.glossary-letters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.glossary-letters a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  text-decoration: none;
}

.glossary-letters a:hover {
  border-color: var(--accent);
  color: var(--text);
  text-decoration: none;
}

.glossary-section {
  margin-bottom: 36px;
}

.glossary-letter {
  font-size: 1.5rem;
  margin-bottom: 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--divider);
}

.glossary-defs {
  margin: 0;
  padding: 0;
}

.glossary-entry {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.glossary-entry dt {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  margin: 0;
}

.glossary-entry dd {
  margin: 6px 0 0;
  font-size: 0.92rem;
  color: var(--text-paragraph);
  max-width: 720px;
  line-height: 1.55;
}

/* ---- Docs section dividers ---- */

.docs-section {
  padding-top: 48px;
  margin-top: 48px;
  border-top: 1px solid var(--divider);
}

.docs-section:first-of-type {
  margin-top: 32px;
  border-top: none;
  padding-top: 0;
}

.docs-section-title {
  font-size: 1.8rem;
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 16px;
}

.docs-intro {
  margin-top: 12px;
  font-size: 1.05rem;
  max-width: 680px;
}