:root {
  --green-950: #132a18;
  --green-900: #1e3b24;
  --green-800: #254c29;
  --green-700: #356b34;
  --green-600: #4f7f3a;
  --green-500: #628e44;
  --green-300: #b7d99b;
  --cream-50: #fffdf2;
  --cream-100: #f7f1d8;
  --cream-200: #eef2df;
  --cream-300: #e3edd2;
  --orange: #d67a1f;
  --orange-dark: #a7530d;
  --ink: #1d2b1f;
  --muted: #5f6f5f;
  --line: rgba(37, 76, 41, 0.15);
  --white: #ffffff;
  --shadow: 0 18px 44px rgba(19, 42, 24, 0.13);
  --soft-shadow: 0 10px 24px rgba(19, 42, 24, 0.09);
  --radius: 26px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Nunito", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 0%, rgba(183, 217, 155, 0.55), transparent 28rem),
    linear-gradient(180deg, var(--cream-50), var(--cream-200));
  line-height: 1.65;
}
a { color: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 0.75rem clamp(1rem, 4vw, 3.5rem);
  background: rgba(247, 241, 216, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; min-width: 170px; text-decoration: none; }
.brand img { display: block; width: min(235px, 44vw); height: auto; }
.main-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 0.45rem; }
.nav-link {
  text-decoration: none;
  font-weight: 900;
  color: var(--green-800);
  padding: 0.58rem 0.82rem;
  border-radius: 999px;
  font-size: 0.94rem;
  transition: 0.2s ease;
}
.nav-link:hover,
.nav-link.active { color: var(--white); background: var(--green-800); box-shadow: 0 8px 18px rgba(37, 76, 41, 0.18); }

main { width: min(1160px, calc(100% - 2rem)); margin: 0 auto; }
.simple-hero {
  min-height: 440px;
  display: flex;
  align-items: center;
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(2.2rem, 5vw, 4rem);
}
.simple-hero-text {
  width: 100%;
  padding: clamp(2rem, 5vw, 4rem);
  color: var(--white);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(19, 42, 24, 0.96), rgba(37, 76, 41, 0.92)),
    radial-gradient(circle at top right, rgba(214, 122, 31, 0.35), transparent 22rem);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.simple-hero-text::after {
  content: "";
  position: absolute;
  inset: auto -6rem -8rem auto;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(214, 122, 31, 0.42), transparent 64%);
}
.simple-hero-text > * { position: relative; z-index: 1; }

.hero,
.article-layout { padding: clamp(2rem, 5vw, 4rem) 0; }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 1.3rem;
  align-items: start;
}
.article-hero {
  grid-column: 1 / -1;
  padding: clamp(2rem, 5vw, 4rem);
  color: var(--white);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(37, 76, 41, 0.98), rgba(53, 107, 52, 0.94)),
    radial-gradient(circle at bottom right, rgba(214, 122, 31, 0.5), transparent 20rem);
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.article-hero h1,
.simple-hero h1 { color: var(--white); }
.article-hero .lead,
.simple-hero .lead { color: rgba(255,255,255,0.9); max-width: 76ch; }

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.article-hero .eyebrow,
.simple-hero .eyebrow { color: #f4b66a; }
.breadcrumb { margin: 0 0 1rem; color: rgba(255,255,255,0.78); font-weight: 800; }
.breadcrumb a { text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.5); }
h1, h2, h3 { margin-top: 0; line-height: 1.12; color: var(--green-900); }
h1 { font-size: clamp(2.45rem, 6vw, 5.1rem); letter-spacing: -0.055em; margin-bottom: 1rem; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.55rem); letter-spacing: -0.035em; margin-bottom: 0.8rem; }
h3 { font-size: 1.18rem; margin-bottom: 0.55rem; }
p { margin: 0 0 1.05rem; }
.lead { font-size: clamp(1.08rem, 2vw, 1.35rem); }

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.78rem 1.18rem;
  border-radius: 999px;
  font-weight: 900;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--orange); color: var(--white); box-shadow: 0 12px 30px rgba(214, 122, 31, 0.3); }
.button.secondary { background: rgba(255,255,255,0.12); color: var(--white); border: 1px solid rgba(255,255,255,0.32); }
.button.secondary.light { background: rgba(255,255,255,0.08); }
.text-link { display: inline-flex; margin-top: auto; color: var(--green-800); font-weight: 900; text-decoration: none; border-bottom: 2px solid var(--orange); width: fit-content; }

.section { padding: clamp(2.4rem, 6vw, 4.5rem) 0; }
.section.compact { padding-top: 1rem; }
.section-heading { max-width: 760px; margin-bottom: 1.5rem; }
.section-heading.centered { margin-inline: auto; text-align: center; }
.cards { display: grid; gap: 1rem; }
.two-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.three-columns { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card,
.article-card,
.toc-card,
.checklist-card,
.minimal-band {
  border: 1px solid var(--line);
  background: rgba(255, 253, 242, 0.88);
  box-shadow: var(--soft-shadow);
  border-radius: var(--radius);
}
.card { padding: 1.55rem; display: flex; flex-direction: column; min-height: 240px; }
.course-card p { color: var(--muted); }
.featured-card { background: linear-gradient(180deg, rgba(227,237,210,0.95), rgba(255,253,242,0.92)); }
.card-icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
  border-radius: 16px;
  color: var(--white);
  background: var(--green-800);
  font-weight: 900;
}
.minimal-band {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 1.2rem;
  align-items: center;
  padding: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 3rem;
}
.small-stats { display: grid; gap: 0.8rem; }
.small-stats span { display: block; border-radius: 18px; padding: 1rem; background: var(--cream-300); color: var(--green-900); font-weight: 800; }
.small-stats strong { display: block; font-size: 1.35rem; color: var(--orange-dark); }

.chapter-meta { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-top: 1.4rem; }
.chapter-meta span {
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.13);
  border: 1px solid rgba(255,255,255,0.22);
  color: rgba(255,255,255,0.9);
  font-weight: 900;
}
.toc-card { position: sticky; top: 6.2rem; padding: 1.25rem; order: 2; }
.toc-card h2 { font-size: 1.2rem; margin-bottom: 0.9rem; }
.toc-card ol { margin: 0; padding-left: 1.25rem; }
.toc-card li { margin-bottom: 0.45rem; }
.toc-card a { color: var(--green-800); font-weight: 800; text-decoration: none; }
.toc-card a:hover { color: var(--orange-dark); }
.article-card { padding: clamp(1.4rem, 4vw, 2.6rem); order: 1; }
.content-section { scroll-margin-top: 7rem; padding: 1rem 0 2.2rem; border-bottom: 1px solid var(--line); }
.content-section:last-child { border-bottom: 0; padding-bottom: 0; }
.section-number { color: var(--orange-dark); font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 0.4rem; }
.article-card strong { color: var(--green-900); }
.article-card em { color: var(--orange-dark); font-style: italic; }
.figure-card {
  margin: 1.2rem 0;
  padding: 1rem 1.05rem;
  border-left: 6px solid var(--orange);
  border-radius: 18px;
  background: linear-gradient(90deg, rgba(214, 122, 31, 0.13), rgba(183, 217, 155, 0.13));
  color: var(--green-900);
  font-weight: 700;
}
.concept-grid,
.equation-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.9rem; margin: 1.1rem 0; }
.concept-grid > div,
.equation-item {
  padding: 1.1rem;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--cream-200);
}
.equation-item p { margin-bottom: 0; }
.table-wrap { overflow-x: auto; margin: 1.1rem 0; }
table { width: 100%; border-collapse: collapse; background: var(--cream-50); border-radius: 18px; overflow: hidden; box-shadow: 0 0 0 1px var(--line); }
th, td { padding: 0.8rem; border-bottom: 1px solid rgba(37,76,41,0.12); text-align: left; vertical-align: top; }
th { background: var(--green-800); color: var(--white); }
tr:last-child td { border-bottom: 0; }
.summary-list { padding-left: 1.2rem; }
.summary-list li { margin-bottom: 0.55rem; }
.checklist { padding-left: 1.1rem; }
.checklist li { margin-bottom: 0.55rem; }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem clamp(1rem, 4vw, 3.5rem);
  color: rgba(255,255,255,0.86);
  background: var(--green-950);
}
.site-footer p { margin: 0; }
.site-footer a { color: var(--green-300); font-weight: 900; text-decoration: none; }

@media (max-width: 980px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .main-nav { justify-content: flex-start; }
  .article-layout { grid-template-columns: 1fr; }
  .toc-card { position: static; order: 1; }
  .article-card { order: 2; }
  .three-columns { grid-template-columns: 1fr; }
  .two-columns { grid-template-columns: 1fr; }
  .minimal-band { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  main { width: min(100% - 1rem, 1160px); }
  .brand img { width: min(220px, 72vw); }
  .nav-link { font-size: 0.86rem; padding: 0.5rem 0.68rem; }
  .simple-hero-text,
  .article-hero,
  .article-card,
  .toc-card { border-radius: 20px; }
  .concept-grid,
  .equation-grid { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; }
}


/* Expansión Pizarrón Verde: áreas STEM */
.professional-hero .simple-hero-text {
  background:
    linear-gradient(135deg, rgba(19, 42, 24, 0.97), rgba(37, 76, 41, 0.93)),
    radial-gradient(circle at 90% 18%, rgba(183, 217, 155, 0.25), transparent 18rem),
    radial-gradient(circle at 12% 100%, rgba(214, 122, 31, 0.36), transparent 20rem);
}
.subject-card .subject-label {
  margin: -0.2rem 0 0.55rem;
  color: var(--orange-dark);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.math-card { background: linear-gradient(180deg, rgba(238,242,223,0.98), rgba(255,253,242,0.92)); }
.physics-card { background: linear-gradient(180deg, rgba(227,237,210,0.98), rgba(255,253,242,0.92)); }
.chemistry-card { background: linear-gradient(180deg, rgba(247,241,216,0.98), rgba(255,253,242,0.92)); }
.math-hero {
  background:
    linear-gradient(135deg, rgba(37, 76, 41, 0.98), rgba(53, 107, 52, 0.95)),
    radial-gradient(circle at top right, rgba(183, 217, 155, 0.38), transparent 20rem);
}
.physics-hero {
  background:
    linear-gradient(135deg, rgba(30, 59, 36, 0.98), rgba(37, 76, 41, 0.94)),
    radial-gradient(circle at bottom right, rgba(214, 122, 31, 0.45), transparent 20rem),
    radial-gradient(circle at top left, rgba(183, 217, 155, 0.25), transparent 17rem);
}
.summary-box,
.callout,
.rule-box,
.formula-card {
  border-radius: 20px;
  border: 1px solid var(--line);
}
.summary-box {
  padding: 1.25rem 1.35rem;
  margin-bottom: 1.3rem;
  background: linear-gradient(135deg, rgba(227,237,210,0.95), rgba(255,253,242,0.95));
}
.summary-box h2 { font-size: 1.35rem; }
.callout,
.rule-box {
  margin: 1.1rem 0;
  padding: 1.1rem 1.2rem;
  background: rgba(183, 217, 155, 0.24);
  border-left: 6px solid var(--green-500);
}
.rule-box { border-left-color: var(--orange); background: rgba(214,122,31,0.11); }
.callout h3,
.rule-box h3 { margin-bottom: 0.35rem; }
.formula-card {
  margin: 1rem 0;
  padding: 1rem 1.15rem;
  overflow-x: auto;
  background: var(--green-950);
  color: var(--cream-50);
  font-weight: 800;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
}
.formula-card mjx-container { color: var(--cream-50); }
.article-card .MathJax, .formula-card { font-size: 1.02rem; }
.subject-pill {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--cream-300);
  color: var(--green-900);
  font-weight: 900;
}



/* Sección Simulaciones */
.four-columns { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.simulation-card {
  background: linear-gradient(180deg, rgba(214,122,31,0.12), rgba(255,253,242,0.94));
}

.simulation-hero {
  background:
    linear-gradient(135deg, rgba(19, 42, 24, 0.98), rgba(53, 107, 52, 0.94)),
    radial-gradient(circle at 78% 20%, rgba(214, 122, 31, 0.48), transparent 18rem),
    radial-gradient(circle at 10% 100%, rgba(183, 217, 155, 0.30), transparent 20rem);
}

.simulation-layout .toc-card { min-width: 0; }

.control-group { margin-bottom: 1rem; }

.control-group label {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  color: var(--green-900);
  font-weight: 900;
  font-size: 0.94rem;
}

.control-group input[type="range"] {
  width: 100%;
  accent-color: var(--green-700);
  margin-top: 0.45rem;
}

.simulation-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.2rem 0 1rem;
}

button.button {
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.95rem;
}

.button.outline {
  background: var(--cream-100);
  color: var(--green-900);
  border: 2px solid var(--green-800);
}

.simulation-note {
  padding: 0.9rem;
  border-radius: 16px;
  background: rgba(183, 217, 155, 0.24);
  color: var(--muted);
  font-weight: 800;
  margin-bottom: 0;
}

.pendulum-lab {
  margin: 1.3rem 0 2rem;
  padding: clamp(1rem, 3vw, 1.5rem);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,253,242,0.94), rgba(238,242,223,0.88));
  box-shadow: var(--soft-shadow);
}

.canvas-wrap {
  width: 100%;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid rgba(37, 76, 41, 0.18);
  background: var(--cream-200);
}

#pendulumCanvas {
  display: block;
  width: 100%;
  max-width: 100%;
  min-height: 300px;
}

.readout-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 0.85rem;
}

.readout-grid div {
  padding: 0.85rem;
  border-radius: 18px;
  background: var(--green-950);
  color: var(--cream-50);
}

.readout-grid span {
  display: block;
  color: var(--green-300);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.readout-grid strong {
  display: block;
  margin-top: 0.2rem;
  color: var(--cream-50);
  font-size: 1.05rem;
}

@media (max-width: 1120px) {
  .four-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  .four-columns { grid-template-columns: 1fr; }
  .readout-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .readout-grid { grid-template-columns: 1fr; }
  .simulation-buttons .button { width: 100%; }
}


/* Sección Calculas: CAS educativo */
.calculas-card {
  background: linear-gradient(180deg, rgba(37,76,41,0.11), rgba(255,253,242,0.95));
}

.calculas-hero {
  background:
    linear-gradient(135deg, rgba(19, 42, 24, 0.98), rgba(37, 76, 41, 0.94)),
    radial-gradient(circle at 82% 18%, rgba(183, 217, 155, 0.32), transparent 18rem),
    radial-gradient(circle at 12% 95%, rgba(214, 122, 31, 0.44), transparent 20rem);
}

.calculas-sidebar .command-list {
  padding-left: 1rem;
  margin-bottom: 1.1rem;
}

.calculas-sidebar .command-list li {
  margin-bottom: 0.5rem;
}

code {
  padding: 0.08rem 0.28rem;
  border-radius: 7px;
  background: rgba(37, 76, 41, 0.10);
  color: var(--green-900);
  font-weight: 900;
}

.calculas-actions .button,
.calculas-toolbar .button { width: 100%; }

.calculas-toolbar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
  margin: 1.1rem 0 1.4rem;
}

.notebook {
  display: grid;
  gap: 1rem;
  margin: 1rem 0 2rem;
}

.notebook-cell {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 0.7rem 0.85rem;
  padding: 1rem;
  border: 1px solid rgba(37, 76, 41, 0.16);
  border-radius: 22px;
  background: rgba(255, 253, 242, 0.92);
  box-shadow: 0 10px 22px rgba(19, 42, 24, 0.07);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.notebook-cell.active {
  border-color: rgba(214, 122, 31, 0.66);
  box-shadow: 0 14px 28px rgba(214, 122, 31, 0.12);
}

.cell-prompt {
  padding-top: 0.72rem;
  color: var(--orange-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 900;
  font-size: 0.88rem;
  text-align: right;
  white-space: nowrap;
}

.out-prompt { color: var(--green-700); }

.cell-input-area {
  min-width: 0;
}

.cell-input-area textarea {
  display: block;
  width: 100%;
  min-height: 58px;
  resize: vertical;
  padding: 0.9rem 1rem;
  border: 2px solid rgba(37, 76, 41, 0.14);
  border-radius: 16px;
  background: #ffffff;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.98rem;
  line-height: 1.55;
  outline: none;
}

.cell-input-area textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(214, 122, 31, 0.12);
}

.cell-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.55rem;
}

.mini-button {
  border: 0;
  border-radius: 999px;
  padding: 0.42rem 0.72rem;
  background: var(--green-800);
  color: var(--white);
  font-family: inherit;
  font-weight: 900;
  cursor: pointer;
}

.mini-button:hover { background: var(--orange-dark); }

.cell-output {
  min-height: 42px;
  padding: 0.85rem 1rem;
  border-radius: 16px;
  background: rgba(227, 237, 210, 0.62);
  overflow-x: auto;
}

.cell-output:empty {
  background: rgba(37, 76, 41, 0.04);
}

.math-output {
  background: linear-gradient(180deg, rgba(227, 237, 210, 0.78), rgba(255,253,242,0.86));
}

.text-output ul {
  margin: 0.6rem 0 0;
  padding-left: 1.2rem;
}

.error-output {
  background: rgba(214, 80, 31, 0.12);
  color: #7b2209;
  border: 1px solid rgba(214, 80, 31, 0.25);
  font-weight: 800;
}

.numeric-result {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0.45rem 0.65rem;
  border-radius: 999px;
  background: rgba(37, 76, 41, 0.10);
  font-weight: 900;
}

.cas-plot {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--cream-50);
}

.flash-message {
  position: fixed;
  left: 50%;
  bottom: 1.2rem;
  z-index: 80;
  transform: translateX(-50%);
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: var(--green-900);
  color: var(--white);
  font-weight: 900;
  box-shadow: var(--shadow);
}

.flash-error { background: #7b2209; }

@media (max-width: 980px) {
  .calculas-toolbar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  .notebook-cell { grid-template-columns: 1fr; }
  .cell-prompt { text-align: left; padding-top: 0; }
  .calculas-toolbar { grid-template-columns: 1fr; }
}


/* Llamada 9: estructura por subcarpetas y manual de Calculas */
.area-course-card { min-height: 265px; }
.secondary-link { margin-top: 0.45rem; border-bottom-color: var(--green-500); color: var(--orange-dark); }
.construction-layout { grid-template-columns: minmax(0, 1fr); }
.construction-card { max-width: 920px; margin-inline: auto; }
.construction-hero { background: linear-gradient(135deg, var(--green-900), var(--green-700)); }
.manual-layout pre,
.article-card pre { margin: 1rem 0; padding: 1rem; overflow-x: auto; border-radius: 18px; border: 1px solid rgba(37, 76, 41, 0.14); background: rgba(19, 42, 24, 0.94); color: var(--cream-50); box-shadow: var(--soft-shadow); }
.manual-layout pre code,
.article-card pre code { background: transparent; color: inherit; padding: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-weight: 700; }
.manual-code-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.manual-button { display: inline-flex; justify-content: center; align-items: center; text-decoration: none; width: 100%; }
@media (max-width: 760px) { .manual-code-grid { grid-template-columns: 1fr; } }

/* Llamada 13: estado del motor Python + SymPy con Pyodide */
.engine-status {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 1rem 0 0;
  padding: 0.75rem 0.95rem;
  border-radius: 18px;
  border: 1px solid rgba(37, 76, 41, 0.16);
  background: rgba(227, 237, 210, 0.72);
  font-weight: 900;
  color: var(--green-900);
}
.status-dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 999px;
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(214, 122, 31, 0.14);
  flex: 0 0 auto;
}
.engine-status.status-loading .status-dot { animation: pvPulse 1.15s ease-in-out infinite; }
.engine-status.status-ready { background: rgba(183, 217, 155, 0.45); }
.engine-status.status-ready .status-dot { background: var(--green-700); box-shadow: 0 0 0 5px rgba(53, 107, 52, 0.13); }
.engine-status.status-error { background: rgba(214, 80, 31, 0.12); color: #7b2209; border-color: rgba(214, 80, 31, 0.25); }
.engine-status.status-error .status-dot { background: #7b2209; box-shadow: 0 0 0 5px rgba(123, 34, 9, 0.13); }
@keyframes pvPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.25); opacity: 0.62; }
}
.cell-output pre.text-output {
  margin: 0;
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95rem;
}

/* Llamada 23: ajuste visual compacto sin modificar contenidos ni estructura */
:root {
  --radius: 20px;
}

body {
  line-height: 1.48;
}

.site-header {
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
}

.brand img {
  width: min(190px, 38vw);
}

.nav-link {
  padding: 0.42rem 0.68rem;
  font-size: 0.88rem;
}

main {
  width: min(1180px, calc(100% - 1.4rem));
}

.simple-hero {
  min-height: 310px;
  padding: clamp(1.8rem, 5vw, 3.2rem) 0 clamp(1.3rem, 3.5vw, 2.2rem);
}

.simple-hero-text,
.article-hero {
  padding: clamp(1.45rem, 3.8vw, 2.8rem);
}

.hero,
.article-layout {
  padding: clamp(1.25rem, 3.5vw, 2.4rem) 0;
}

.article-layout {
  gap: 1rem;
}

h1 {
  font-size: clamp(2.05rem, 4.7vw, 3.9rem);
  letter-spacing: -0.045em;
  margin-bottom: 0.65rem;
}

h2 {
  font-size: clamp(1.45rem, 2.7vw, 2.05rem);
  margin-bottom: 0.55rem;
}

h3 {
  font-size: 1.08rem;
  margin-bottom: 0.38rem;
}

p {
  margin-bottom: 0.75rem;
}

.lead {
  font-size: clamp(1rem, 1.6vw, 1.16rem);
}

.eyebrow {
  margin-bottom: 0.42rem;
  font-size: 0.72rem;
}

.breadcrumb {
  margin-bottom: 0.65rem;
}

.hero-actions {
  margin-top: 1rem;
  gap: 0.55rem;
}

.button {
  min-height: 2.35rem;
  padding: 0.56rem 0.9rem;
  font-size: 0.9rem;
}

.section {
  padding: clamp(1.45rem, 4vw, 2.8rem) 0;
}

.section-heading {
  margin-bottom: 1rem;
}

.cards {
  gap: 0.75rem;
}

.card {
  min-height: 190px;
  padding: 1.15rem;
}

.area-course-card {
  min-height: 205px;
}

.card-icon {
  width: 2.55rem;
  height: 2.55rem;
  margin-bottom: 0.75rem;
  border-radius: 13px;
}

.article-card {
  padding: clamp(1.1rem, 3vw, 1.9rem);
}

.toc-card {
  top: 5.2rem;
  padding: 1rem;
}

.toc-card h2 {
  font-size: 1.05rem;
  margin-bottom: 0.55rem;
}

.toc-card li {
  margin-bottom: 0.28rem;
}

.content-section {
  padding: 0.75rem 0 1.55rem;
  scroll-margin-top: 6rem;
}

.summary-box {
  padding: 0.95rem 1.05rem;
  margin-bottom: 1rem;
}

.summary-box h2 {
  font-size: 1.15rem;
}

.concept-grid,
.equation-grid {
  gap: 0.65rem;
  margin: 0.75rem 0;
}

.concept-grid > div,
.equation-item {
  padding: 0.85rem;
  border-radius: 16px;
}

.callout,
.rule-box,
.figure-card {
  margin: 0.8rem 0;
  padding: 0.85rem 0.95rem;
  border-radius: 15px;
}

.formula-card {
  margin: 0.75rem 0;
  padding: 0.82rem 0.95rem;
  border-radius: 15px;
}

.chapter-meta {
  margin-top: 1rem;
  gap: 0.45rem;
}

.chapter-meta span {
  padding: 0.38rem 0.68rem;
  font-size: 0.86rem;
}

.table-wrap {
  margin: 0.85rem 0;
}

th, td {
  padding: 0.58rem 0.65rem;
}

.site-footer {
  padding: 1.25rem clamp(1rem, 4vw, 3.5rem);
}

/* Calculas: celdas más compactas */
.calculas-layout {
  grid-template-columns: minmax(0, 1fr) 285px;
  gap: 0.9rem;
}

.calculas-main {
  padding: clamp(0.85rem, 2.3vw, 1.35rem);
}

.calculas-toolbar {
  gap: 0.45rem;
  margin: 0.7rem 0 0.85rem;
}

.calculas-actions .button,
.calculas-toolbar .button {
  min-height: 2.1rem;
  padding: 0.45rem 0.66rem;
  font-size: 0.82rem;
}

.notebook {
  gap: 0.62rem;
  margin: 0.7rem 0 1.2rem;
}

.notebook-cell {
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 0.38rem 0.62rem;
  padding: 0.62rem;
  border-radius: 18px;
}

.cell-prompt {
  padding-top: 0.42rem;
  font-size: 0.8rem;
}

.cell-input-area textarea {
  min-height: 42px;
  padding: 0.55rem 0.72rem;
  border-radius: 13px;
  font-size: 0.9rem;
  line-height: 1.36;
}

.cell-buttons {
  gap: 0.32rem;
  margin-top: 0.38rem;
}

.mini-button {
  padding: 0.28rem 0.55rem;
  font-size: 0.75rem;
}

.cell-output {
  min-height: 32px;
  padding: 0.58rem 0.72rem;
  border-radius: 13px;
}

.cell-output pre.text-output {
  font-size: 0.86rem;
}

.engine-status {
  margin-top: 0.6rem;
  padding: 0.52rem 0.75rem;
  border-radius: 14px;
  font-size: 0.86rem;
}

.status-dot {
  width: 0.62rem;
  height: 0.62rem;
}

.calculas-sidebar .command-list li {
  margin-bottom: 0.32rem;
}

code {
  font-size: 0.88em;
}

@media (max-width: 980px) {
  .calculas-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  main { width: min(100% - 0.8rem, 1180px); }
  .brand img { width: min(180px, 70vw); }
  .notebook-cell {
    grid-template-columns: 1fr;
  }
  .cell-prompt {
    text-align: left;
    padding-top: 0;
  }
}


/* Llamada 24: salidas de Calculas más compactas */
.calculas-main .cell-output {
  min-height: 24px;
  padding: 0.34rem 0.6rem;
  border-radius: 12px;
}

.calculas-main .math-output {
  background: linear-gradient(180deg, rgba(227, 237, 210, 0.72), rgba(255, 253, 242, 0.84));
}

.calculas-main .cell-output > div {
  margin: 0;
}

.calculas-main .cell-output mjx-container[jax="SVG"][display="true"] {
  margin: 0.08rem 0 !important;
}

.calculas-main .cell-output mjx-container[jax="SVG"] svg {
  max-width: 100%;
}

.calculas-main .numeric-result {
  display: none;
}


/* Versión 1: identificación y recursos */
.version-pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin: 0.15rem 0 1rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  color: #fff8e8;
  background: rgba(214, 122, 31, 0.24);
  border: 1px solid rgba(255, 255, 255, 0.24);
  font-weight: 900;
  letter-spacing: 0.02em;
}
.resources-card .card-icon {
  background: linear-gradient(135deg, var(--orange), var(--green-800));
}
.status-card .card-icon {
  background: linear-gradient(135deg, #356b34, #1f3a25);
}
.biology-card .card-icon {
  background: linear-gradient(135deg, #6b8e5a, #2e7d32);
}
.biology-card {
  border-color: #c8dcb9;
}
.version-band {
  border-style: dashed;
}