/* ==========================================================================
   A Butterfly's Quantum Compass: field-notebook version
   Same HTML classes as style.css, so it's a drop-in swap.
   Idea: black = the wing's veins (structure), white = the spots (boxes),
   orange = only what matters (results), paintings pinned like specimens.
   ========================================================================== */

:root {
  /* Monarch palette */
  --paper: #faf6ee; /* cream page */
  --spot: #ffffff; /* white spots: boxes, mats */
  --vein: #1d1612; /* black veins: headings, rules */
  --text: #2c2622;
  --muted: #776c62;
  --line: #e6dccd;
  --orange: #e8731c; /* wing orange: results only */
  --orange-deep: #b4500f;
  --color-highlight: #a52a99; /* wing orange */
  --gold: #e3a21a;
  --milkweed: #4f7a45;
  --wash: #f3ece1; /* slightly darker paper for code */

  /* Type */
  --font-display:
    "Fraunces", Georgia, "Times New Roman", serif; /* title + section titles */
  --font-body: "Inter", system-ui, sans-serif; /* reading text */
  --font-type:
    "IBM Plex Mono", ui-monospace, monospace; /* typed labels, captions */
  --font-code: "IBM Plex Mono", ui-monospace, monospace;
  --line-height: 1.75;
}

/* ---------- Page ---------- */
html,
body {
  margin: 0;
}
body {
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.1rem;
  line-height: var(--line-height);
}
.root {
  max-width: 720px;
  margin: 0 auto;
  padding-inline: 20px;
  padding-block: 40px 0;
}
p {
  margin: 0 0 1em;
}
a {
  color: var(--orange-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
a:hover {
  color: var(--vein);
}

/* ---------- Header: a typed notebook cover ---------- */
.header {
  text-align: center;
  padding-bottom: 32px;
  margin-bottom: 40px;
  border-bottom: 2px solid var(--vein);
}
.header-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-optical-sizing: auto;
  font-size: clamp(2.3rem, 7vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--vein);
  margin: 0 0 14px;
  text-wrap: balance;
}
.header-sub-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--muted);
  margin: 0 0 18px;
  text-wrap: balance;
}
.authors {
  display: flex;
  justify-content: center;
  margin-bottom: 6px;
}
.author {
  font-family: var(--font-display);
  font-size: 1.1s rem;
  font-weight: 600;
  /* color: var(--orange-deep); */
}
.author a {
  color: inherit;
  font-weight: inherit;
  border-bottom: none;
  text-decoration: none;
}
.date-author {
  display: flex;
  flex-direction: column;
  font-family: var(--font-type);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- Sections: black like veins, orange saved for results ---------- */
.section-title {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--vein);
  line-height: 1.3;
  margin: 56px 0 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--vein);
  text-wrap: balance;
}
.section-sub-title {
  font-family: var(--font-type);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--orange-deep);
  margin: 32px 0 8px;
}
.highlight {
  color: var(--color-highlight);
  font-weight: 650;
}

/* ---------- Boxes: white spots with a vein on the left ---------- */
.note,
.quote,
.warning,
.conclusions {
  background: var(--spot);
  border: 1px solid var(--line);
  border-left: 5px solid;
  padding: 18px 22px;
  margin: 24px 0;
  border-radius: 2px;
}
.note {
  border-left-color: var(--orange);
} /* results */
.quote {
  border-left-color: var(--vein);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.2rem;
  line-height: 1.5;
} /* the question */
.warning {
  border-left-color: var(--gold);
} /* caveats */
.conclusions {
  border-left-color: var(--milkweed);
} /* milkweed */
.note > :last-child,
.quote > :last-child,
.warning > :last-child,
.conclusions > :last-child {
  margin-bottom: 0;
}
.callout-title {
  display: block;
  font-weight: 700;
  margin-bottom: 6px;
}

/* ---------- Paintings: pinned specimens ---------- */
.schematics {
  display: block;
  width: 100%;
  box-sizing: border-box;
  background: var(--spot);
  padding: 12px;
  border: 1px solid var(--line);
  box-shadow: 0 10px 24px -14px rgba(60, 30, 10, 0.45);
  transform: rotate(-0.5deg);
  margin-top: 20px;
}
.schematics.portrait {
  width: min(100%, 420px);
  margin-inline: auto;
  transform: rotate(0.7deg);
}
.img-comment-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin: 14px 0 32px;
  font-family: var(--font-type);
}
.img-comment-title {
  font-weight: 600;
  color: var(--vein);
  font-size: 0.95rem;
}
.img-comment-text {
  color: var(--muted);
  font-size: 0.85rem;
}

/* ---------- Equations ---------- */
.equation {
  overflow-x: auto;
  overflow-y: hidden;
  margin: 18px 0;
  color: var(--vein);
}
mjx-container[display="true"] {
  margin: 0.6em 0 !important;
}

/* ---------- Code: a typed card ---------- */
.code-container {
  background: var(--wash);
  border-left: 3px solid var(--vein);
  padding: 14px 18px;
  margin: 20px 0;
  overflow-x: auto;
  font-family: var(--font-code);
  font-size: 0.85rem;
}
pre {
  margin: 0;
}
code {
  font-family: var(--font-code);
  white-space: pre;
  line-height: 1.6;
  color: var(--vein);
}
p code {
  font-size: 0.88em;
  background: var(--wash);
  padding: 1px 5px;
}
.keyword {
  color: var(--orange-deep);
  font-weight: 600;
}
.function {
  color: var(--milkweed);
  font-weight: 600;
}
.number {
  color: #8a5a00;
}
.comment {
  color: var(--muted);
  font-style: italic;
}

/* ---------- Tables: like a lab notebook (rules, no shadows) ---------- */
.table-container {
  margin: 1.5rem 0;
  overflow-x: auto;
}
.parameter-table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-size: 0.98rem;
  font-variant-numeric: tabular-nums;
  border-top: 2px solid var(--vein);
  border-bottom: 2px solid var(--vein);
}
.parameter-table th,
.parameter-table td {
  padding: 0.6rem 0.9rem;
  text-align: left;
  vertical-align: top;
}
.parameter-table th {
  font-family: var(--font-type);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vein);
  border-bottom: 1px solid var(--vein);
}
.parameter-table td {
  border-bottom: 1px solid var(--line);
}
.parameter-table td:first-child {
  white-space: nowrap;
}
.parameter-table tbody tr:hover {
  background: var(--spot);
}

/* ---------- Lists ---------- */
ul {
  margin: 0 0 1em;
  padding-left: 1.3em;
}
li {
  margin: 0 0 0.35em;
}
li::marker {
  color: var(--orange);
}

/* ---------- Charts (drawn by charts.js) ---------- */
.plot {
  width: 100%;
  overflow-x: auto;
  margin: 14px 0 4px;
  background: var(--spot);
  border: 1px solid var(--line);
  padding: 10px 6px 4px;
  box-sizing: border-box;
}
.plot svg {
  display: block;
  width: 100%;
  min-width: 480px;
  height: auto;
}
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: var(--muted);
  margin: 8px 0 16px;
}
.legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.sw {
  width: 18px;
  height: 3px;
  display: inline-block;
}
.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  box-sizing: border-box;
}
.axis {
  stroke: var(--line);
}
.tick {
  fill: var(--muted);
  font-family: var(--font-code);
  font-size: 11px;
}
.alabel {
  fill: var(--muted);
  font-family: var(--font-body);
  font-size: 12px;
}
.c0 {
  stroke: var(--gold);
}
.c1 {
  stroke: var(--orange);
}
.c2 {
  stroke: var(--orange-deep);
}
.c3 {
  stroke: var(--vein);
}
.cg {
  stroke: #b9aea3;
}
.f0 {
  background: var(--gold);
}
.f1 {
  background: var(--orange);
}
.f2 {
  background: var(--orange-deep);
}
.f3 {
  background: var(--vein);
}
.fg {
  background: #b9aea3;
}
.pt-ideal {
  fill: var(--vein);
  stroke: var(--vein);
}
.pt-forte {
  fill: var(--spot);
  stroke: var(--orange);
  stroke-width: 2;
}
.ebar-ideal {
  stroke: var(--vein);
}
.ebar-forte {
  stroke: var(--orange);
}

/* ---------- Footer ---------- */
.footer {
  margin: 72px 0 80px;
  padding-top: 14px;
  border-top: 2px solid var(--vein);
  text-align: right;
  font-family: var(--font-type);
  font-size: 0.85rem;
  color: var(--muted);
}

/* plots from the code output */
.figure {
  margin: 28px 0 36px;
}
.figure img {
  display: block;
  width: 100%;
  height: auto;
}
.figure figcaption {
  margin: 12px 8% 0;
  text-align: center;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--muted);
}
.figure figcaption b {
  color: var(--orange-deep);
  font-weight: 600;
  margin-right: 4px;
}
@media (max-width: 600px) {
  .figure figcaption {
    margin: 10px 0 0;
  }
}

.no-underline {
  border-bottom: none;
  text-decoration: none;
}