/* ──────────────────────────────────────────────────────────────
   weasel workflow guide · stylesheet
   look and feel: Quarto "cosmo" theme + custom.css + Material dark
   code highlighting. fonts: Garamond (body/headings), system mono.
   ────────────────────────────────────────────────────────────── */

:root {
  /* cosmo palette */
  --white:      #ffffff;
  --gray-100:   #f8f9fa;
  --gray-200:   #e9ecef;
  --gray-300:   #dee2e6;
  --gray-400:   #ced4da;
  --gray-500:   #adb5bd;
  --gray-600:   #868e96;
  --gray-700:   #495057;
  --gray-800:   #373a3c;

  --primary:    #2780e3;   /* cosmo blue           */
  --primary-d:  #1f6fc4;   /* darker hover         */
  --green:      #3fb618;   /* cosmo success        */
  --green-d:    #379f15;
  --cyan:       #9954bb;   /* cosmo info           */

  --ink:        #373a3c;   /* body text (gray-800) */
  --ink-2:      #495057;   /* gray-700             */
  --ink-3:      #868e96;   /* gray-600 muted       */
  --heading:    #003366;   /* custom.css headings  */

  --border:     #dee2e6;   /* gray-300             */
  --border-2:   #ced4da;   /* gray-400             */

  /* code: Material Theme Adjusted (highlight.theme) */
  --code-bg:    #263238;
  --code-fg:    #c5c8c6;
  --code-mut:   #707880;   /* comments             */
  --inline-bg:  #f2f2f2;   /* custom.css inline    */
  --output-bg:  #e4ebf1;   /* custom.css stdout    */

  /* $enable-rounded: false → square; code keeps small radius */
  --radius:        0;
  --radius-code:   4px;
  --radius-inline: 2px;

  --transition: 150ms ease;

  --font-serif: "Garamond", "EB Garamond", Georgia, "Times New Roman", serif;
  --font-sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                "Helvetica Neue", Arial, sans-serif;
  --font-mono:  "SFMono-Regular", Menlo, Monaco, Consolas,
                "Liberation Mono", "Courier New", monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* cosmo $font-size-root */
html { font-size: 13px; scroll-behavior: smooth; }

body {
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ─── HEADER (cosmo navbar) ─────────────────────────────────── */

.site-header {
  background: var(--primary);
  padding: .7rem 0;
  box-shadow: 0 1px 0 rgba(0, 0, 0, .08);
}

.header-inner {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .5rem .9rem;
}

.brand { display: flex; align-items: baseline; gap: .55rem; }

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0;
}

.brand-version {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--white);
  background: rgba(255, 255, 255, .18);
  border: 1px solid rgba(255, 255, 255, .28);
  padding: .12em .5em;
  border-radius: var(--radius-inline);
}

.brand-full {
  font-family: var(--font-sans);
  font-size: .82rem;
  font-weight: 400;
  color: rgba(255, 255, 255, .82);
  letter-spacing: .02em;
  text-transform: uppercase;
}

/* navbar carries its own colour; rule becomes a hairline shadow */
.header-rule {
  height: 0;
  margin: 0;
  background: none;
}

/* ─── INTRO (title block) ───────────────────────────────────── */

.intro-section {
  padding: 2.25rem 0 1.4rem;
}

.intro-inner { display: flex; flex-direction: column; gap: .8rem; max-width: 680px; }

.intro-headline {
  font-family: var(--font-serif);
  font-size: 1.95rem;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.28;
  letter-spacing: -.005em;
}

.intro-lede {
  font-size: 1.12rem;
  color: var(--ink-2);
  max-width: 100%;
  line-height: 1.5;
}

.intro-lede strong { color: var(--ink); font-weight: 600; }

/* about band (below the tool, deliberately low-contrast) */
.about-section {
  border-top: 1px solid var(--border);
  padding: 1.75rem 0 .25rem;
}

/* overview grid */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius);
}

.overview-col:first-child { padding-right: 2.5rem; }
.overview-col:last-child  { padding-left: 2.5rem; border-left: 1px solid var(--border); }

.ov-heading {
  font-family: var(--font-sans);
  font-size: .82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--ink-3);
  margin-bottom: .7rem;
}

.ov-list { list-style: none; display: flex; flex-direction: column; gap: .4rem; }

.ov-list li {
  font-size: 1.05rem;
  color: var(--ink-2);
  padding-left: 1rem;
  position: relative;
  line-height: 1.45;
}

.ov-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .62em;
  width: .35rem;
  height: .35rem;
  background: var(--primary);
}

/* two core pipelines (flat labelled rows, badge-style tags) */
.pipeline-list { display: flex; flex-direction: column; gap: .7rem; }

.pip-row { display: flex; align-items: flex-start; gap: .7rem; }

.pip-tag {
  flex-shrink: 0;
  width: 3.5rem;
  text-align: center;
  font-family: var(--font-sans);
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  padding: .22em 0;
  margin-top: .12rem;
  border-radius: var(--radius);
}

.pip-scope { background: #e7f0fb; color: var(--primary); border: 1px solid #d3e3f8; }
.pip-plan  { background: #e8f5e2; color: #2f8a13;        border: 1px solid #cfe9c2; }

.pip-desc { font-size: 1rem; line-height: 1.45; color: var(--ink-2); }
.pip-desc strong { color: var(--ink); font-weight: 600; }

/* ─── TREE SECTION ──────────────────────────────────────────── */

.tree-section { padding: 1.1rem 0 3rem; }
.tree-inner { display: flex; flex-direction: column; gap: 0; }

/* ─── PATH TRAIL ────────────────────────────────────────────── */

.path-trail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  padding: .55rem .9rem;
  background: var(--gray-100);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.trail-items {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .3rem .5rem;
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: .85rem;
}

.trail-item { display: inline-flex; align-items: center; gap: .4rem; }

.trail-item:not(:first-child)::before {
  content: "\203A";
  margin-right: .25rem;
  color: var(--gray-400);
}

.trail-topic { color: var(--ink-3); }

.trail-item:last-child .trail-topic { color: var(--ink); font-weight: 600; }

.trail-tag {
  font-size: .66rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: .1em .42em;
  border-radius: var(--radius-inline);
}

.trail-tag--yes { color: var(--primary); background: #e7f0fb; }
.trail-tag--no  { color: var(--gray-700); background: var(--gray-200); }

.trail-restart {
  font-family: var(--font-sans);
  font-size: .85rem;
  color: var(--ink-2);
  background: var(--white);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: .25em .8em;
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}

.trail-restart:hover { color: var(--white); background: var(--primary); border-color: var(--primary); }

/* ─── NODE CARD ─────────────────────────────────────────────── */

.node-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--primary);
  border-radius: var(--radius);
  padding: 1.9rem 2rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .05);
  animation: slideUp .28s cubic-bezier(.22, .68, 0, 1.1) both;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.q-step-label {
  font-family: var(--font-sans);
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--ink-3);
  margin-bottom: .7rem;
  display: block;
}

.q-question {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.25;
  margin-bottom: .7rem;
}

.q-explanation {
  font-size: 1.1rem;
  color: var(--ink-2);
  line-height: 1.55;
  margin-bottom: 1.6rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--border);
}

/* ─── YES / NO BUTTONS (cosmo buttons) ──────────────────────── */

.yn-group { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }

.yn-btn {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: .6rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  font-family: var(--font-sans);
  text-align: left;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.yn-btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.yn-btn::after {
  content: "\2192";
  font-size: 1.05rem;
  line-height: 1;
  opacity: .55;
  flex-shrink: 0;
}

/* yes = solid primary */
.yn-yes { background: var(--primary); border-color: var(--primary); }
.yn-yes:hover { background: var(--primary-d); border-color: var(--primary-d); }
.yn-yes .yn-text { color: var(--white); }

/* no = outline secondary */
.yn-no { background: var(--white); border-color: var(--border-2); }
.yn-no:hover { background: var(--gray-100); border-color: var(--gray-500); }
.yn-no .yn-text { color: var(--ink-2); }

/* the uppercase Yes/No tag is redundant with the labels (which already start
   with "Yes,"/"No,"), so it is hidden to keep each button a single clean line */
.yn-marker { display: none; }

.yn-text { font-size: 1.05rem; font-weight: 400; line-height: 1.35; }

/* ─── RESULT CARD (callout-style accent) ────────────────────── */

.result-card {
  border-top: 1px solid var(--border);
  border-left: 3px solid var(--primary);
}

.result-demo-card { border-left-color: var(--green); }

.result-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-sans);
  font-size: .76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--white);
  padding: .25em .7em;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

.badge-scope { background: var(--primary); }
.badge-plan  { background: var(--green); }
.badge-demo  { background: var(--gray-800); }

.result-heading {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.25;
  margin-bottom: .7rem;
}

.result-summary {
  font-size: 1.1rem;
  color: var(--ink-2);
  line-height: 1.55;
  margin-bottom: 1.6rem;
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--border);
}

/* workflow steps */
.workflow-label {
  font-family: var(--font-sans);
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--ink-3);
  margin-bottom: .85rem;
  display: block;
}

.workflow-steps { display: flex; flex-direction: column; gap: .55rem; margin-bottom: 1.6rem; }

.step-row { display: flex; align-items: flex-start; gap: .8rem; }

.step-num {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  background: #e7f0fb;
  color: var(--primary);
  border: 1px solid #d3e3f8;
  font-family: var(--font-sans);
  font-size: .82rem;
  font-weight: 600;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: .1rem;
}

.step-body { display: flex; flex-direction: column; gap: .2rem; flex: 1; }

.step-fn {
  font-family: var(--font-mono);
  font-size: .92rem;
  background: var(--inline-bg);
  color: #2b3137;
  border-radius: var(--radius-inline);
  padding: .12em .4em;
  align-self: flex-start;
  word-break: break-word;
}

.step-note { font-family: var(--font-sans); font-size: .92rem; color: #5d646b; line-height: 1.45; }

/* ─── CODE BLOCK (Material dark) ────────────────────────────── */

.code-wrapper {
  margin-bottom: 1.4rem;
  border-radius: var(--radius-code);
  overflow: hidden;
  background: var(--code-bg);
}

.code-header {
  background: var(--code-bg);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  padding: .45rem .9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.code-lang {
  font-family: var(--font-sans);
  font-size: .76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: rgba(197, 200, 198, .65);
}

.code-copy-btn {
  font-family: var(--font-sans);
  font-size: .8rem;
  color: rgba(197, 200, 198, .8);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: var(--radius-inline);
  padding: .18em .6em;
  cursor: pointer;
  transition: var(--transition);
}

.code-copy-btn:hover { color: var(--white); border-color: rgba(255, 255, 255, .45); }
.code-copy-btn.copied { color: #b5bd68; border-color: rgba(181, 189, 104, .6); }

.code-block {
  background: var(--code-bg);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  margin: 0;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: .92rem;
  line-height: 1.6;
  color: var(--code-fg);
  background: none;
  border: 0;
  padding: 0;
  white-space: pre;
  display: block;
}

/* R syntax tokens (Material Theme Adjusted) */
.code-block .r-co { color: var(--code-mut); font-style: italic; }
.code-block .r-st { color: #b5bd68; }
.code-block .r-nu { color: #b294bb; }
.code-block .r-fn { color: #81a2be; }
.code-block .r-kw { color: #de935f; }

/* ─── INFO NOTE (callout-note, icon hidden as in custom.css) ── */

.result-note {
  margin-bottom: 1.4rem;
  padding: .7rem 1rem;
  background: var(--output-bg);
  border: 1px solid #c9d6e3;
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  font-size: 1rem;
  color: var(--ink-2);
  line-height: 1.5;
  display: flex;
  gap: .5rem;
}

.note-icon { display: none; }

/* restart button (outline) */
.btn-restart {
  font-family: var(--font-sans);
  font-size: .95rem;
  color: var(--ink-2);
  background: var(--white);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: .45em 1.1em;
  cursor: pointer;
  transition: var(--transition);
}

.btn-restart:hover { color: var(--white); background: var(--primary); border-color: var(--primary); }

/* ─── FOOTER (.nav-footer gradient rule) ────────────────────── */

.site-footer {
  position: relative;
  padding-top: .75rem;
  padding-bottom: 1.5rem;
  margin-top: 3rem;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0),
    rgba(0, 0, 0, .15),
    rgba(0, 0, 0, 0)
  );
  transform: scaleY(.5);
  transform-origin: top;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-sans);
  font-size: .92rem;
  color: rgba(0, 0, 0, .55);
}

.footer-sep { color: var(--gray-400); }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  margin-top: .55rem;
  font-family: var(--font-sans);
  font-size: .92rem;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  color: var(--ink-3);
  transition: color var(--transition);
}

.footer-link:hover { color: var(--primary); text-decoration: none; }

.footer-icon { display: block; flex-shrink: 0; }

.install-line {
  font-family: var(--font-mono);
  font-size: .88rem;
  background: var(--inline-bg);
  border: none;
  padding: .12em .4em;
  border-radius: var(--radius-inline);
  color: var(--ink-2);
}

/* inline code in prose (custom.css) */
/* inline code in prose (footer, notes, summaries, explanations) */
code {
  font-family: var(--font-mono);
  font-size: .86em;
  background: rgba(0, 0, 0, .05);
  border: none;
  padding: .08em .35em;
  border-radius: var(--radius-inline);
  color: #2b3137;
  word-break: break-word;
}

/* ─── RESPONSIVE ────────────────────────────────────────────── */

@media (max-width: 640px) {
  .container { padding: 0 1.15rem; }

  .intro-headline { font-size: 2.1rem; }

  .overview-grid { grid-template-columns: 1fr; gap: 1.4rem; }
  .overview-col:first-child { padding-right: 0; }
  .overview-col:last-child  { padding-left: 0; border-left: none; }

  .node-card { padding: 1.4rem 1.25rem; }
  .q-question, .result-heading { font-size: 1.45rem; }

  .yn-group { grid-template-columns: 1fr; }

  .trail-restart { align-self: flex-start; }
  .path-trail { flex-direction: column; align-items: flex-start; gap: .6rem; }
}