/* MedCapsNet research page — token-driven, light + dark. */

:root {
  color-scheme: light dark;
  --page:        #f9f9f7;
  --surface:     #fcfcfb;
  --ink:         #0b0b0b;
  --ink-2:       #52514e;
  --muted:       #898781;
  --hairline:    #e1e0d9;
  --border:      rgba(11, 11, 11, 0.10);
  --accent:      #2a78d6;
  --accent-ink:  #1c5cab;
  --code-bg:     #f0efec;
}
@media (prefers-color-scheme: dark) {
  :root {
    --page:        #0d0d0d;
    --surface:     #1a1a19;
    --ink:         #f2f1ec;
    --ink-2:       #c3c2b7;
    --muted:       #898781;
    --hairline:    #2c2c2a;
    --border:      rgba(255, 255, 255, 0.10);
    --accent:      #3987e5;
    --accent-ink:  #6da7ec;
    --code-bg:     #232322;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

/* ---- header ---- */
header {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1.1rem 1.25rem 0.9rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--hairline);
}
header .blog-name a {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}
header nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 1.1rem; }
header nav a { color: var(--ink-2); text-decoration: none; font-size: 0.92rem; }
header nav a:hover { color: var(--accent); }

/* ---- main column ---- */
.franklin-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

.franklin-content h1 {
  font-size: 2.05rem;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 1.2rem 0 0.4rem;
}
.franklin-content h2 {
  font-size: 1.42rem;
  letter-spacing: -0.01em;
  margin: 2.6rem 0 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--hairline);
}
.franklin-content h3 { font-size: 1.12rem; margin: 1.8rem 0 0.4rem; }
.franklin-content h1 a, .franklin-content h2 a, .franklin-content h3 a {
  color: inherit; text-decoration: none;
}

.franklin-content a { color: var(--accent-ink); text-decoration: underline; text-decoration-color: var(--hairline); text-underline-offset: 2px; }
.franklin-content a:hover { text-decoration-color: var(--accent); }

.franklin-content p { margin: 0.8rem 0; }
.franklin-content blockquote {
  margin: 1rem 0;
  padding: 0.15rem 1rem;
  border-left: 3px solid var(--accent);
  color: var(--ink-2);
  background: var(--surface);
  border-radius: 0 6px 6px 0;
}

/* hero block under the H1 */
.hero-sub { color: var(--ink-2); font-size: 1.05rem; margin-top: 0; }
.hero-links { margin: 0.9rem 0 0.4rem; display: flex; flex-wrap: wrap; gap: 0.55rem; }
.hero-links a {
  display: inline-block;
  padding: 0.28rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font-size: 0.88rem;
  text-decoration: none;
}
.hero-links a:hover { border-color: var(--accent); color: var(--accent-ink); }

/* abstract card */
.abstract {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1.4rem 0;
  color: var(--ink-2);
}
.abstract strong:first-child { color: var(--ink); }

/* ---- table of contents ---- */
.franklin-toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.8rem 1.1rem;
  font-size: 0.93rem;
}
.franklin-toc ol { margin: 0.2rem 0; padding-left: 1.2rem; }
.franklin-toc a { text-decoration: none; color: var(--ink-2); }
.franklin-toc a:hover { color: var(--accent-ink); }

/* ---- code ---- */
.franklin-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: var(--code-bg);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}
.franklin-content pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  line-height: 1.5;
}
.franklin-content pre code { background: none; padding: 0; font-size: 0.84rem; }

/* ---- tables ---- */
.franklin-content .table-wrap, .franklin-content table { max-width: 100%; }
.franklin-content table {
  border-collapse: collapse;
  margin: 1.2rem auto;
  font-size: 0.92rem;
  display: block;
  overflow-x: auto;
}
.franklin-content th, .franklin-content td {
  padding: 0.45rem 0.85rem;
  border-bottom: 1px solid var(--hairline);
  text-align: left;
}
.franklin-content th {
  color: var(--ink-2);
  font-weight: 600;
  border-bottom: 2px solid var(--hairline);
  white-space: nowrap;
}
.franklin-content td { font-variant-numeric: tabular-nums; }

/* ---- figures ---- */
.franklin-content img { max-width: 100%; height: auto; }
figure, .fig {
  margin: 1.6rem 0;
  text-align: center;
}
.fig img {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fcfcfb; /* figures are rendered on light; keep them legible in dark mode */
  padding: 6px;
}
.fig .caption, figcaption {
  margin-top: 0.55rem;
  font-size: 0.88rem;
  color: var(--muted);
  text-align: left;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}
.fig .caption strong { color: var(--ink-2); }

/* two-up figure row */
.fig-row { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }
.fig-row > div { flex: 1 1 300px; min-width: 0; }

/* ---- misc ---- */
.franklin-content hr { border: none; border-top: 1px solid var(--hairline); margin: 2.2rem 0; }

.page-foot {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1.2rem 1.25rem 2.5rem;
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  font-size: 0.85rem;
}
.page-foot a { color: var(--ink-2); }

/* katex display size */
.katex-display { font-size: 1.02em; overflow-x: auto; overflow-y: hidden; padding: 0.2rem 0; }

@media (max-width: 600px) {
  body { font-size: 16px; }
  header { flex-direction: column; gap: 0.4rem; }
  .franklin-content h1 { font-size: 1.6rem; }
}