/* =====================================================================
   Research Daily: legacy styles for long-page lessons written before the
   click-through explainer format (paper card, fast-path highlighter,
   voice callouts, static figures, old widgets). Remove this file, and its
   line in mkdocs.yml, once every lesson has been converted.
   ===================================================================== */


/* Part dividers: `## Part II: What and how { .rd-part }` */
.md-typeset h2.rd-part {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--md-default-fg-color--light);
  border-top: 1px solid var(--rd-rule);
  padding-top: 1.2em;
  margin-top: 3.4em;
}

/* ---------- fast path highlighter ------------------------------------ */
.md-typeset .rd-fast .rd-hl,
.rd-hl-inline {
  background: linear-gradient(
    transparent 58%, var(--rd-hl-soft) 58%, var(--rd-hl-soft) 92%, transparent 92%
  );
  padding: 0 0.12em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

/* ---------- voice callouts ------------------------------------------- */
/* Emoji markers replace Material's icon masks so the voice is legible
   even without colour. */
.md-typeset .admonition,
.md-typeset details {
  font-size: 0.8rem;
  border-width: 0.06rem;
  box-shadow: none;
}

.md-typeset :is(.paper, .code, .take, .predict, .bridge, .deep, .answer) > :is(.admonition-title, summary)::before {
  background-color: transparent;
  -webkit-mask-image: none;
  mask-image: none;
  width: 1.1rem;
  height: 1.1rem;
  font-size: 0.82rem;
  line-height: 1.1rem;
  text-align: center;
}

.md-typeset :is(.admonition, details).paper   { border-color: var(--rd-paper); }
.md-typeset :is(.admonition, details).code    { border-color: var(--rd-code); }
.md-typeset :is(.admonition, details).take    { border-color: var(--rd-take); border-style: dashed; }
.md-typeset :is(.admonition, details).predict { border-color: var(--rd-predict); }
.md-typeset :is(.admonition, details).bridge  { border-color: var(--rd-bridge); }
.md-typeset :is(.admonition, details).deep    { border-color: var(--rd-deep); }
.md-typeset :is(.admonition, details).answer  { border-color: var(--rd-code); }

.md-typeset .paper   > :is(.admonition-title, summary) { background-color: color-mix(in srgb, var(--rd-paper) 11%, transparent); }
.md-typeset .code    > :is(.admonition-title, summary) { background-color: color-mix(in srgb, var(--rd-code) 11%, transparent); }
.md-typeset .take    > :is(.admonition-title, summary) { background-color: color-mix(in srgb, var(--rd-take) 10%, transparent); }
.md-typeset .predict > :is(.admonition-title, summary) { background-color: color-mix(in srgb, var(--rd-predict) 12%, transparent); }
.md-typeset .bridge  > :is(.admonition-title, summary) { background-color: color-mix(in srgb, var(--rd-bridge) 11%, transparent); }
.md-typeset .deep    > :is(.admonition-title, summary) { background-color: color-mix(in srgb, var(--rd-deep) 11%, transparent); }
.md-typeset .answer  > :is(.admonition-title, summary) { background-color: color-mix(in srgb, var(--rd-code) 9%, transparent); }

.md-typeset .paper   > :is(.admonition-title, summary)::before { content: "📄"; }
.md-typeset .code    > :is(.admonition-title, summary)::before { content: "💻"; }
.md-typeset .take    > :is(.admonition-title, summary)::before { content: "🧠"; }
.md-typeset .predict > :is(.admonition-title, summary)::before { content: "⏸️"; }
.md-typeset .bridge  > :is(.admonition-title, summary)::before { content: "🎙️"; }
.md-typeset .deep    > :is(.admonition-title, summary)::before { content: "🔬"; }
.md-typeset .answer  > :is(.admonition-title, summary)::before { content: "✅"; }

.md-typeset .paper   > :is(.admonition-title, summary)::after,
.md-typeset .code    > :is(.admonition-title, summary)::after,
.md-typeset .take    > :is(.admonition-title, summary)::after,
.md-typeset .predict > :is(.admonition-title, summary)::after,
.md-typeset .bridge  > :is(.admonition-title, summary)::after,
.md-typeset .deep    > :is(.admonition-title, summary)::after,
.md-typeset .answer  > :is(.admonition-title, summary)::after {
  color: var(--md-default-fg-color--light);
}

/* Curiosity gap at the end of a section: `{ .rd-next }` on a paragraph */
.md-typeset p.rd-next {
  font-style: italic;
  color: var(--md-default-fg-color--light);
  border-left: 2px solid var(--rd-hl);
  padding-left: 0.8em;
  margin-top: 1.6em;
}

/* ---------- paper card ----------------------------------------------- */
.rd-card {
  border: 1px solid var(--rd-rule);
  border-radius: 6px;
  padding: 1rem 1.2rem 1.1rem;
  margin: 0 0 2rem;
  background: var(--rd-surface);
  font-size: 0.78rem;
}
.rd-card__idea {
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0 0 0.9rem;
  font-weight: 500;
}
.rd-card__facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 1rem;
  margin: 0;
}
.md-typeset .rd-card__facts dt { color: var(--md-default-fg-color--light); font-weight: 500; }
.md-typeset .rd-card__facts dd { margin: 0; }
.rd-card__label { font-weight: 600; margin: 1rem 0 0.3rem; }
.md-typeset .rd-card ul,
.md-typeset .rd-card ol { margin: 0.2rem 0 0.4rem; }
.md-typeset .rd-card li { margin: 0.1rem 0; }
.md-typeset .rd-card__prereqs ul { list-style: none; margin-left: 0; padding-left: 0; }
.rd-card__prereqs input { accent-color: var(--rd-code); margin-right: 0.35rem; }
.rd-fastpath ol:empty,
.rd-fastpath:has(ol:empty) { display: none; }

.rd-done {
  margin-top: 0.9rem;
  font: inherit;
  font-size: 0.74rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--rd-rule);
  border-radius: 4px;
  background: transparent;
  color: var(--md-default-fg-color);
  cursor: pointer;
}
.rd-done[aria-pressed="true"] {
  border-color: var(--rd-code);
  color: var(--rd-code);
}
.rd-done[aria-pressed="true"]::before { content: "✓ "; }
.rd-done:focus-visible { outline: 2px solid var(--md-accent-fg-color); outline-offset: 2px; }

@media screen and (max-width: 30em) {
  .rd-card__facts { grid-template-columns: 1fr; }
  .md-typeset .rd-card__facts dt { margin-top: 0.4rem; }
}
/* ---------- figures -------------------------------------------------- */
.md-typeset figure.rd-fig {
  /* Material sets figures to width: fit-content, which collapses inline SVG */
  margin: 1.6rem 0;
  width: 100%;
  max-width: 100%;
  display: block;
}
.md-typeset figure.rd-fig .mermaid { display: flex; justify-content: center; }
.md-typeset figure.rd-fig > svg,
.md-typeset figure.rd-fig > img,
.md-typeset figure.rd-fig .rd-svg-wrap > svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 44rem;
  margin: 0 auto;
}
.md-typeset figure.rd-fig figcaption {
  font-size: 0.74rem;
  line-height: 1.55;
  color: var(--md-default-fg-color--light);
  max-width: 42rem;
  margin: 0.7rem auto 0;
  text-align: left;
  font-style: normal;
}
.md-typeset figure.rd-fig figcaption strong { color: var(--md-default-fg-color); }
/* ---------- interactive widgets -------------------------------------- */
.rd-widget {
  border: 1px solid var(--rd-rule);
  border-radius: 6px;
  padding: 1rem;
  margin: 1.4rem 0 0.4rem;
  background: var(--rd-surface);
  font-size: 0.78rem;
}
.rd-widget__title { font-weight: 650; margin: 0 0 0.6rem; font-size: 0.86rem; }
.rd-widget__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  align-items: center;
  margin-bottom: 0.8rem;
}
.rd-widget label { display: inline-flex; align-items: center; gap: 0.5rem; }
.rd-widget input[type="range"] { accent-color: var(--rd-predict); width: min(16rem, 60vw); }
.rd-widget button,
.rd-widget select {
  font: inherit;
  padding: 0.25rem 0.7rem;
  border-radius: 4px;
  border: 1px solid var(--rd-rule);
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  cursor: pointer;
}
.rd-widget button[aria-pressed="true"] {
  border-color: var(--rd-paper);
  color: var(--rd-paper);
}
.rd-widget button:focus-visible,
.rd-widget input:focus-visible,
.rd-widget select:focus-visible { outline: 2px solid var(--md-accent-fg-color); outline-offset: 2px; }
.rd-widget canvas,
.rd-widget svg { max-width: 100%; display: block; }
.rd-widget output,
.rd-widget .mono { font-family: var(--md-code-font-family); font-size: 0.74rem; }
.rd-widget__readout { margin-top: 0.6rem; color: var(--md-default-fg-color--light); }
.rd-widget-caption {
  font-size: 0.74rem;
  color: var(--md-default-fg-color--light);
  margin: 0.4rem 0 1.6rem;
  max-width: 42rem;
}

.md-typeset .rd-wide { overflow-x: auto; }