/* ---------- Base ---------- */
:root {
  --ink: #1a1a1a;
  --muted: #5a5a5a;
  --rule: #cccccc;
  --rule-soft: #e6e6e1;
  --bg: #fafafa;
  --paper: #ffffff;
  --accent: #2a2a2a;
  --accent-soft: #f4f4f0;
  --highlight: #fff39a;
  --max-page: 1180px;
  --col-main: 720px;
  --col-side: 160px;
  --col-gap: 4rem;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 17px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Page ---------- */
.page {
  max-width: var(--max-page);
  margin: 0 auto;
  padding: 4rem 1.75rem 3rem;
  background: var(--paper);
  min-height: calc(100vh - 6rem);
  border-left: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
}

footer {
  max-width: var(--max-page);
  margin: 0 auto;
  padding: 1.6rem 1.75rem;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

footer p {
  margin: 0.25rem 0;
}

/* ---------- Header & abstract: narrow column ---------- */
.page-header,
.abstract {
  max-width: var(--col-main);
}

.page-header {
  margin-bottom: 2.4rem;
}

h1 {
  font-size: 2.4rem;
  line-height: 1.15;
  font-weight: 600;
  margin: 0 0 0.9rem;
  letter-spacing: -0.01em;
}

.byline {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.abstract {
  margin: 0 0 3rem;
}

.abstract p {
  font-size: 1.05rem;
  line-height: 1.65;
  margin: 0;
}

.big-question {
  font-weight: 700;
  font-style: italic;
}

.cair {
  font-style: normal;
  background: linear-gradient(transparent 60%, var(--highlight) 60%);
  padding: 0 0.12em;
  letter-spacing: 0.005em;
}

.muted {
  color: var(--muted);
}

.placeholder-link {
  color: var(--muted);
  text-decoration: underline dotted;
  text-underline-offset: 3px;
}

/* ---------- Content grid (main + sidebar) ---------- */
.content-grid {
  display: grid;
  grid-template-columns: minmax(0, var(--col-main)) var(--col-side);
  gap: var(--col-gap);
  align-items: start;
}

.main-col {
  min-width: 0;
}

/* ---------- Section headings ---------- */
h2 {
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin: 0 0 1.2rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

h3 {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 0 0 0.9rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule-soft);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* ---------- Findings ---------- */
.findings {
  margin: 0 0 3rem;
}

.findings .entry {
  padding-top: 0.25rem;
}

.findings .entry + .entry {
  border-top: 1px dashed var(--rule-soft);
  padding-top: 1.5rem;
  margin-top: 1.5rem;
  opacity: 0.78;
}

.findings .entry.latest {
  position: relative;
  padding-left: 1.1rem;
  border-left: 3px solid var(--accent);
}

.findings .updated {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
}

.findings .updated time {
  background: var(--accent-soft);
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  margin-left: 0.25rem;
}

.findings ol {
  list-style: none;
  counter-reset: f;
  padding: 0;
  margin: 0;
}

.findings ol li {
  counter-increment: f;
  position: relative;
  padding: 0.2rem 0 0.2rem 2.2rem;
  margin-bottom: 0.95rem;
  font-size: 0.99rem;
  line-height: 1.55;
}

.findings ol li::before {
  content: counter(f);
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 1.7rem;
  height: 1.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--paper);
  background: var(--accent);
  border-radius: 50%;
}

/* ---------- Figures (full-width sections, two blocks) ---------- */
.figures-block {
  margin: 3rem 0 2.5rem;
}

.figures-block + .figures-block {
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--rule-soft);
}

.figures-block-head {
  margin-bottom: 1.4rem;
}

.figures-block-head.with-picker {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.figures-block-head .block-eyebrow {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.3rem;
}

.figures-block-head .block-title {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
  border: none;
  padding: 0;
  text-transform: none;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}

.figures-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

/* ---------- Model picker (dropdown) ---------- */
.model-picker {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif;
}

.model-picker label {
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 600;
}

.model-picker select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.45rem 2rem 0.45rem 0.7rem;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--ink);
  cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M1 1l4 4 4-4' stroke='%23555' stroke-width='1.4' fill='none' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.model-picker select:hover { border-color: var(--accent); }
.model-picker select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(42,42,42,0.08);
}

/* ---------- Figure subtitle (small descriptor under fig title) ---------- */
.fig-subtitle {
  display: block;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-style: italic;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: normal;
  text-transform: none;
  color: var(--muted);
  margin-top: 0.25rem;
}

/* ---------- Info trigger (outlined "?" button next to fig title) ---------- */
.info-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.1em;
  height: 1.1em;
  margin-left: 0.45em;
  padding: 0;
  font-family: inherit;
  font-size: 0.65em;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 50%;
  cursor: help;
  position: relative;
  vertical-align: middle;
  line-height: 1;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.info-trigger:hover,
.info-trigger:focus {
  color: var(--paper);
  background: var(--accent);
  border-color: var(--accent);
  outline: none;
}

.info-tooltip {
  display: none;
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  max-width: 80vw;
  padding: 0.7rem 0.9rem;
  background: #1f1f1f;
  color: #f4f4f4;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: normal;
  text-transform: none;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  line-height: 1.55;
  z-index: 100;
  text-align: left;
  pointer-events: none;
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
  font-style: normal;
}

.info-tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: #1f1f1f;
}

.info-trigger:hover .info-tooltip,
.info-trigger:focus .info-tooltip,
.info-trigger:focus-within .info-tooltip {
  display: block;
}

.fig-placeholder,
.fig-chart {
  margin: 0;
}

.fig-chart .fig-title {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 0 0 0.45rem;
  padding: 0;
  border: none;
  text-align: center;
}

.fig-chart .chart-container {
  position: relative;
  aspect-ratio: 5 / 3;
  padding: 0;
  background: transparent;
  border: none;
}

/* Pin the canvas as an absolute overlay so its drawing buffer never
   forces the container to keep a stale (large) size after the viewport
   shrinks. Chart.js sizes the buffer; the container drives layout. */
.fig-chart .chart-container > canvas {
  position: absolute !important;
  top: 0;
  left: 0;
  width: 100% !important;
  height: 100% !important;
  display: block;
}

/* Stacked summation: 5 above Σ, s=1 below Σ. Used inside info-tooltip. */
.big-sum {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  vertical-align: middle;
  line-height: 1;
  margin: 0 0.1em;
  position: relative;
  top: -0.05em;
}

.big-sum .sigma-glyph {
  font-size: 1.55em;
  line-height: 0.85;
  font-weight: 400;
}

.big-sum .lim {
  font-size: 0.6em;
  line-height: 1;
  font-style: normal;
}

.fig-canvas {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--accent-soft);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  background-image:
    linear-gradient(45deg, transparent 48%, var(--rule-soft) 48%, var(--rule-soft) 52%, transparent 52%),
    linear-gradient(-45deg, transparent 48%, var(--rule-soft) 48%, var(--rule-soft) 52%, transparent 52%);
  background-size: 40px 40px;
}

.fig-label {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
  background: var(--paper);
  padding: 0.25rem 0.6rem;
  border-radius: 3px;
  border: 1px solid var(--rule-soft);
}

.fig-coming {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--muted);
  font-style: italic;
  background: var(--paper);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
}

.fig-placeholder figcaption {
  margin-top: 0.6rem;
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ---------- Sidebar (Models covered) ---------- */
.sidebar {
  align-self: start;
}

.sidebar .run-log {
  list-style: none;
  padding: 0;
  margin: 0;
  /* Cap height so a long list scrolls instead of pushing layout */
  max-height: 70vh;
  overflow-y: auto;
  /* Subtle scrollbar styling (WebKit) */
  scrollbar-width: thin;
}

.sidebar .run-log::-webkit-scrollbar { width: 6px; }
.sidebar .run-log::-webkit-scrollbar-thumb {
  background: var(--rule);
  border-radius: 3px;
}

.sidebar .run-log li {
  padding: 0.65rem 0;
  border-bottom: 1px dashed var(--rule-soft);
}

.sidebar .run-log li:last-child {
  border-bottom: none;
}

.sidebar .run-log .model {
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.2;
  margin-bottom: 0.3rem;
}

.sidebar .run-log .meta {
  color: var(--muted);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  line-height: 1.45;
}

/* ---------- Links ---------- */
a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: #555;
}

/* ---------- Mobile ---------- */
@media (max-width: 920px) {
  .content-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .sidebar {
    position: static;
    border-top: 1px solid var(--rule-soft);
    padding-top: 1.2rem;
  }
  .figures-row {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .figures-block-head.with-picker {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  html { font-size: 16px; }
  .page { padding: 2rem 1.2rem 2rem; border: none; }
  h1 { font-size: 1.9rem; }
  .findings .entry.latest { padding-left: 0.9rem; }
  .findings ol li { padding-left: 1.9rem; }
  .figures-block-head .block-title { font-size: 1.2rem; }
}