/* ===== Distill-style blog post CSS ===== */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
}

:root {
  --text-color: #303030;
  --heading-color: #1a1a2e;
  --accent: #268bd2;
  --accent-light: #d6eaf8;
  --magenta: #d33682;
  --bg: #ffffff;
  --bg-alt: #f7f9fb;
  --border: #e0e0e0;
  --code-bg: #f4f4f4;
  --sidebar-width: 260px;
  --content-width: 740px;
  --full-width: 1060px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Source Serif 4', 'Georgia', serif;
  color: var(--text-color);
  background: var(--bg);
  line-height: 1.72;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

/* --- Layout --- */
.page-wrapper {
  max-width: var(--full-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: var(--content-width) 1fr;
  gap: 0 48px;
}

.content {
  grid-column: 1;
  min-width: 0;
}

/* Margin notes column */
.margin-notes {
  grid-column: 2;
  position: relative;
}

/* Full-width figures break out of grid */
.full-width {
  grid-column: 1 / -1;
}

/* --- Header --- */
.article-header {
  max-width: var(--full-width);
  margin: 60px auto 0;
  padding: 0 24px 36px;
}

.article-header h1 {
  font-family: 'Source Sans 3', 'Helvetica Neue', sans-serif;
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--heading-color);
  line-height: 1.15;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  max-width: var(--content-width);
}

.article-header .subtitle {
  font-size: 1.2rem;
  color: #555;
  line-height: 1.5;
  max-width: var(--content-width);
}

.authors {
  margin-top: 20px;
  font-family: 'Source Sans 3', sans-serif;
  font-size: 1.15rem;
  color: #555;
  max-width: var(--content-width);
}

.authors .author-name {
  font-weight: 600;
  color: var(--text-color);
}

.affiliation {
  font-size: 1.05rem;
  color: var(--text-color);
  margin-top: 4px;
}

.pub-date {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 0.85rem;
  color: #999;
  margin-top: 10px;
}

/* --- Typography --- */
h2 {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--heading-color);
  margin: 48px 0 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--accent);
}

h3 {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--heading-color);
  margin: 32px 0 8px;
}

p {
  margin: 0 0 16px;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}

a:hover {
  border-bottom-color: var(--accent);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-bottom-color: transparent;
}

/* --- Key Finding Boxes --- */
.finding {
  background: #fdf0f5;
  border-left: 4px solid var(--magenta);
  border-radius: 4px;
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.finding strong {
  display: block;
  margin-bottom: 4px;
  font-family: 'Source Sans 3', sans-serif;
  color: var(--heading-color);
}

.finding.magenta {
  background: #fdf0f5;
  border-left-color: var(--magenta);
}

/* --- Figures --- */
figure {
  margin: 32px 0;
  text-align: center;
}

figure img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

figcaption {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 0.85rem;
  color: #666;
  margin-top: 10px;
  line-height: 1.5;
  text-align: left;
  max-width: 90%;
  margin-left: auto;
  margin-right: auto;
}

figure.full-bleed {
  margin-left: -24px;
  margin-right: -24px;
  max-width: calc(100% + 48px);
}

figure.full-bleed img {
  width: 100%;
  border-radius: 0;
}

figure.wrap-right {
  float: right;
  margin: 0 0 12px 20px;
  max-width: 250px;
}

figure.wrap-right img {
  width: 100%;
}

figure.wrap-right figcaption {
  max-width: 100%;
}

/* --- Tables --- */
table {
  border-collapse: collapse;
  margin: 24px auto;
  font-size: 13px;
  font-family: 'Source Sans 3', sans-serif;
}

table th {
  background: var(--bg-alt);
  font-weight: 600;
  text-align: left;
  padding: 6px 10px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
  font-size: 13px;
}

table td {
  padding: 5px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  font-size: 13px;
}

table tr:last-child td {
  border-bottom: 2px solid var(--border);
}

table .number {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Row highlights */
tr.row-base td { background: rgba(38, 139, 210, 0.06); }
tr.row-memento td { background: rgba(211, 54, 130, 0.06); }
tr.row-rl td { background: rgba(211, 54, 130, 0.03); }
tr.row-control td { background: rgba(0, 0, 0, 0.03); }

/* --- Code --- */
code {
  font-family: 'Source Code Pro', 'Menlo', monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 2px 5px;
  border-radius: 3px;
}

pre {
  background: var(--code-bg);
  padding: 16px 20px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.5;
  margin: 24px 0;
}

pre code {
  background: none;
  padding: 0;
}

/* --- Margin Notes --- */
.margin-note {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 0.82rem;
  color: #777;
  line-height: 1.45;
  position: absolute;
  width: var(--sidebar-width);
}

/* --- Block / Memento Visual Demo --- */
.token-demo {
  font-family: 'Source Code Pro', monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  background: #fafafa;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px 20px;
  margin: 24px 0;
  overflow-x: auto;
}

.token-demo .block {
  background: rgba(38, 139, 210, 0.08);
  border-left: 3px solid var(--accent);
  padding: 8px 12px;
  margin: 6px 0;
  border-radius: 3px;
}

.token-demo .memento {
  background: rgba(211, 54, 130, 0.08);
  border-left: 3px solid var(--magenta);
  padding: 8px 12px;
  margin: 6px 0;
  border-radius: 3px;
  font-style: italic;
}

.token-demo .masked {
  opacity: 0.35;
  text-decoration: line-through;
}

.token-demo .special-token {
  color: var(--magenta);
  font-weight: 600;
}

/* --- Footer --- */
.article-footer {
  max-width: var(--full-width);
  margin: 48px auto 0;
  padding: 24px 24px 60px;
  border-top: 1px solid var(--border);
  font-family: 'Source Sans 3', sans-serif;
  font-size: 0.85rem;
  color: #999;
}

/* --- Math (KaTeX) --- */
.katex-display {
  margin: 20px 0;
  overflow-x: auto;
}

/* --- Responsive --- */
@media (max-width: 1100px) {
  .page-wrapper {
    display: block;
    max-width: var(--content-width);
  }
  .margin-note {
    position: relative;
    width: 100%;
    margin: 12px 0;
    padding: 12px;
    background: var(--bg-alt);
    border-radius: 4px;
  }
}

@media (max-width: 768px) {
  .article-header h1 {
    font-size: 1.8rem;
  }
  h2 { font-size: 1.35rem; }
  body { font-size: 15px; }
  .article-header, .page-wrapper, .article-footer {
    padding-left: 16px;
    padding-right: 16px;
  }
}