/* Tipografía de las anotaciones "a plumón" de los casos (casos.js) */
@import url("https://fonts.googleapis.com/css2?family=Caveat:wght@600;700&display=swap");

/* ==========================================================================
   Paleta institucional UTFSM
   Colores extraídos del escudo y timbre oficiales de la Universidad Técnica
   Federico Santa María (Dirección General de Docencia).
   ========================================================================== */
:root,
[data-md-color-scheme="default"] {
  --usm-navy: #1b2a5e;
  --usm-navy-dark: #10193b;
  --usm-blue: #005f96;
  --usm-gold: #e5b300;
  --usm-red: #b30828;

  --md-primary-fg-color: var(--usm-navy);
  --md-primary-fg-color--light: var(--usm-blue);
  --md-primary-fg-color--dark: var(--usm-navy-dark);
  --md-accent-fg-color: var(--usm-gold);
  --md-accent-fg-color--transparent: #e5b30022;
  --md-typeset-a-color: var(--usm-blue);
}

[data-md-color-scheme="slate"] {
  --usm-navy: #24356e;
  --usm-navy-dark: #0c1330;
  --usm-blue: #3d9bd6;
  --usm-gold: #f2c334;
  --usm-red: #e15268;

  --md-primary-fg-color: var(--usm-navy-dark);
  --md-primary-fg-color--light: var(--usm-navy);
  --md-primary-fg-color--dark: #080d1f;
  --md-accent-fg-color: var(--usm-gold);
  --md-typeset-a-color: var(--usm-blue);
  --md-default-bg-color: #10142a;
}

/* Header / topbar -------------------------------------------------------- */
.md-header {
  background: linear-gradient(90deg, var(--usm-navy-dark) 0%, var(--usm-navy) 55%, var(--usm-blue) 100%);
  box-shadow: 0 1px 0 var(--usm-gold);
}

.md-tabs {
  background-color: var(--usm-navy-dark);
}

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 1.6rem;
  width: 1.6rem;
}

/* Gold accent underline on active tabs/links */
.md-tabs__link--active,
.md-nav__link--active {
  color: var(--usm-gold) !important;
}

.md-typeset a:hover {
  color: var(--usm-gold);
}

/* Footer ------------------------------------------------------------------ */
.md-footer {
  background-color: var(--usm-navy-dark);
}

.md-footer-meta {
  background-color: var(--usm-navy-dark);
}

/* Headings ----------------------------------------------------------------*/
.md-typeset h1 {
  color: var(--usm-navy);
  border-bottom: 3px solid var(--usm-gold);
  padding-bottom: 0.3rem;
}

[data-md-color-scheme="slate"] .md-typeset h1 {
  color: #eef1fb;
}

.md-typeset h2 {
  border-left: 4px solid var(--usm-blue);
  padding-left: 0.6rem;
}

/* Tables -------------------------------------------------------------------*/
.md-typeset table:not([class]) th {
  background-color: var(--usm-navy);
  color: #ffffff;
}

.md-typeset table:not([class]) tr:nth-child(even) {
  background-color: var(--md-accent-fg-color--transparent);
}

/* Admonitions tuned to the palette ------------------------------------------*/
.md-typeset .admonition.note,
.md-typeset .note > .admonition-title {
  border-color: var(--usm-blue);
}
.md-typeset .note > .admonition-title::before {
  background-color: var(--usm-blue);
}

.md-typeset .admonition.warning,
.md-typeset .warning > .admonition-title {
  border-color: var(--usm-gold);
}
.md-typeset .warning > .admonition-title::before {
  background-color: var(--usm-gold);
}

/* ==========================================================================
   Hero banner (home page)
   ========================================================================== */
.usm-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  background: linear-gradient(120deg, var(--usm-navy-dark) 0%, var(--usm-navy) 60%, var(--usm-blue) 100%);
  color: #f3f5fb;
  border-radius: 12px;
  padding: 2.2rem 2.4rem;
  margin: 0.5rem 0 2rem 0;
  border-bottom: 4px solid var(--usm-gold);
}

.usm-hero h1 {
  color: #ffffff !important;
  border-bottom: none !important;
  margin: 0 0 0.4rem 0;
  font-size: 1.9rem;
}

.usm-hero p {
  margin: 0;
  opacity: 0.92;
  max-width: 46ch;
}

.usm-hero .usm-hero-tag {
  display: inline-block;
  margin-bottom: 0.6rem;
  padding: 0.15rem 0.7rem;
  border-radius: 999px;
  background: var(--usm-gold);
  color: var(--usm-navy-dark);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.usm-hero img {
  height: 110px;
  width: auto;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.35));
}

/* Info strip / key facts ---------------------------------------------------*/
.usm-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem 0;
}

.usm-fact {
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-accent-fg-color--transparent);
  border-top: 3px solid var(--usm-blue);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  text-align: center;
}

.usm-fact .usm-fact-label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.7;
  margin-bottom: 0.25rem;
}

.usm-fact .usm-fact-value {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--usm-navy);
}

[data-md-color-scheme="slate"] .usm-fact .usm-fact-value {
  color: #eef1fb;
}

/* Card grid (docente, unidades, etc.) ---------------------------------------*/
.usm-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
  margin: 1.5rem 0;
}

.usm-card {
  border: 1px solid var(--md-accent-fg-color--transparent);
  border-radius: 10px;
  padding: 1.2rem 1.3rem;
  background: var(--md-default-bg-color);
  border-top: 4px solid var(--usm-gold);
}

.usm-card h3 {
  margin-top: 0;
  color: var(--usm-navy);
}

[data-md-color-scheme="slate"] .usm-card h3 {
  color: #eef1fb;
}

/* Class session header badge -------------------------------------------------*/
.usm-session-meta {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin: 0.6rem 0 1.4rem 0;
}

.usm-session-meta span {
  background: var(--usm-navy);
  color: #fff;
  border-radius: 6px;
  padding: 0.25rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.usm-session-meta span.usm-tag-gold {
  background: var(--usm-gold);
  color: var(--usm-navy-dark);
}

.usm-session-meta span.usm-tag-red {
  background: var(--usm-red);
}

/* Interactive chart containers ----------------------------------------------*/
.usm-chart {
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-accent-fg-color--transparent);
  border-radius: 10px;
  padding: 1.2rem 1.4rem 0.6rem 1.4rem;
  margin: 1.4rem 0;
}

.usm-chart-canvas-wrap {
  position: relative;
  width: 100%;
  height: 300px;
}

.usm-chart-canvas-wrap canvas {
  /* Chart.js sizes the canvas to this wrapper (responsive + maintainAspectRatio:false in
     charts.js) — without a fixed-height wrapper, Chart.js and the CSS max-height fight over the
     canvas size and it collapses over successive re-renders. */
  width: 100% !important;
  height: 100% !important;
}

.usm-chart-caption {
  display: block;
  text-align: center;
  font-size: 0.78rem;
  opacity: 0.7;
  margin: 0.4rem 0 0.9rem 0;
  font-style: italic;
}

.usm-chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.2rem;
}

/* Deliverable / activity callouts --------------------------------------------*/
.usm-activity {
  border: 1px solid var(--md-accent-fg-color--transparent);
  border-left: 5px solid var(--usm-blue);
  border-radius: 6px;
  padding: 1rem 1.2rem;
  margin: 1.2rem 0;
  background: var(--md-default-bg-color);
}

.usm-activity h3 {
  margin-top: 0;
}

.usm-deliverable {
  border: 1px solid var(--md-accent-fg-color--transparent);
  border-left: 5px solid var(--usm-red);
  border-radius: 6px;
  padding: 1rem 1.2rem;
  margin: 1.2rem 0;
  background: var(--md-default-bg-color);
}

.usm-deliverable h3 {
  margin-top: 0;
  color: var(--usm-red);
}

.usm-deliverable-badge {
  display: inline-block;
  background: var(--usm-red);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
}

/* ==========================================================================
   Perfil docente (Home)
   ========================================================================== */
.usm-profile {
  display: flex;
  gap: 1.6rem;
  align-items: center;
  flex-wrap: wrap;
  border-top: 4px solid var(--usm-gold);
  border: 1px solid var(--md-accent-fg-color--transparent);
  border-radius: 12px;
  padding: 1.6rem 1.8rem;
  margin: 1.2rem 0 1.6rem 0;
  background: var(--md-default-bg-color);
}

.usm-profile img {
  width: 128px;
  height: 128px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--usm-gold);
  flex-shrink: 0;
}

.usm-profile-body {
  flex: 1;
  min-width: 240px;
}

.usm-profile-body h3 {
  margin: 0 0 0.15rem 0;
  font-size: 1.35rem;
  color: var(--usm-navy);
}

[data-md-color-scheme="slate"] .usm-profile-body h3 {
  color: #eef1fb;
}

.usm-profile-role {
  display: block;
  font-weight: 600;
  color: var(--usm-blue);
  margin-bottom: 0.6rem;
}

.usm-profile-body p {
  margin: 0 0 0.8rem 0;
}

.usm-profile-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--usm-navy);
  color: #fff !important;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none !important;
}

.usm-profile-links a:hover {
  background: var(--usm-blue);
}

/* Timeline (experiencia / docencia) ------------------------------------------*/
.usm-timeline {
  list-style: none;
  margin: 0.6rem 0 0 0;
  padding: 0;
  position: relative;
}

.usm-timeline li {
  position: relative;
  padding: 0 0 1.1rem 1.4rem;
  border-left: 2px solid var(--md-accent-fg-color--transparent);
}

.usm-timeline li:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.usm-timeline li::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--usm-blue);
  border: 2px solid var(--md-default-bg-color);
}

.usm-timeline li.usm-current::before {
  background: var(--usm-gold);
}

.usm-timeline .usm-timeline-title {
  display: block;
  font-weight: 700;
  color: var(--usm-navy);
}

[data-md-color-scheme="slate"] .usm-timeline .usm-timeline-title {
  color: #eef1fb;
}

.usm-timeline .usm-timeline-meta {
  display: block;
  font-size: 0.82rem;
  opacity: 0.75;
}

.usm-timeline .usm-timeline-badge {
  display: inline-block;
  margin-left: 0.4rem;
  background: var(--usm-gold);
  color: var(--usm-navy-dark);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.05rem 0.45rem;
  border-radius: 999px;
}

/* Call-to-action box (ej. registro de grupos) --------------------------------*/
.usm-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  flex-wrap: wrap;
  border: 1px solid var(--md-accent-fg-color--transparent);
  border-left: 5px solid var(--usm-gold);
  border-radius: 8px;
  padding: 1rem 1.3rem;
  margin: 1.2rem 0;
  background: var(--md-default-bg-color);
}

.usm-cta-text > strong {
  display: block;
  color: var(--usm-navy);
  font-size: 1rem;
  margin-bottom: 0.15rem;
}

[data-md-color-scheme="slate"] .usm-cta-text > strong {
  color: #eef1fb;
}

.usm-cta-text span {
  display: block;
  font-size: 0.85rem;
  opacity: 0.8;
}

/* Negritas dentro del texto secundario: inline, sin romper el párrafo */
.usm-cta-text span strong {
  display: inline;
  font-size: inherit;
  color: inherit;
  margin: 0;
}

.usm-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--usm-gold);
  color: var(--usm-navy-dark) !important;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none !important;
  white-space: nowrap;
  transition: transform 0.1s ease, background 0.15s ease;
}

.usm-btn:hover {
  background: #f2c334;
  transform: translateY(-1px);
}


/* ==========================================================================
   Simuladores interactivos de econometría (econ.js)
   Cada <div class="econ-widget" data-widget="..."> es montado por econ.js.
   Los colores del SVG usan las variables de la paleta, así funcionan en
   modo claro y oscuro sin lógica adicional en JS.
   ========================================================================== */
.econ-widget {
  --econ-ink: var(--md-default-fg-color);
  --econ-muted: var(--md-default-fg-color--light);
  --econ-grid: var(--md-default-fg-color--lightest);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-top: 4px solid var(--usm-blue);
  border-radius: 10px;
  padding: 1rem 1.2rem 1.1rem 1.2rem;
  margin: 1.5rem 0;
  background: var(--md-default-bg-color);
}

.econ-widget-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--usm-navy);
  margin-bottom: 0.2rem;
}

[data-md-color-scheme="slate"] .econ-widget-title {
  color: #eef1fb;
}

.econ-widget-title .econ-chip {
  background: var(--usm-gold);
  color: var(--usm-navy-dark);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
}

.econ-widget-sub {
  font-size: 0.78rem;
  opacity: 0.8;
  margin: 0 0 0.8rem 0;
}

.econ-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.6rem 1.2rem;
  margin-bottom: 0.8rem;
}

.econ-control label {
  display: flex;
  justify-content: space-between;
  font-size: 0.74rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.econ-control label output {
  font-variant-numeric: tabular-nums;
  color: var(--usm-blue);
}

.econ-control input[type="range"] {
  width: 100%;
  accent-color: var(--usm-blue);
}

.econ-control select,
.econ-control input[type="number"] {
  width: 100%;
  font: inherit;
  font-size: 0.8rem;
  padding: 0.3rem 0.4rem;
  border-radius: 6px;
  border: 1px solid var(--md-default-fg-color--lighter);
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
}

.econ-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.2rem 0 0.8rem 0;
}

.econ-btn {
  font: inherit;
  font-size: 0.76rem;
  font-weight: 700;
  border: 0;
  border-radius: 999px;
  padding: 0.4rem 0.95rem;
  cursor: pointer;
  background: var(--usm-navy);
  color: #fff;
  transition: background 0.15s ease, transform 0.1s ease;
}

.econ-btn:hover {
  background: var(--usm-blue);
}

.econ-btn:active {
  transform: scale(0.97);
}

.econ-btn.econ-btn-gold {
  background: var(--usm-gold);
  color: var(--usm-navy-dark);
}

.econ-btn.econ-btn-ghost {
  background: transparent;
  color: var(--md-default-fg-color);
  border: 1px solid var(--md-default-fg-color--lighter);
}

.econ-btn[aria-pressed="true"] {
  background: var(--usm-gold);
  color: var(--usm-navy-dark);
}

.econ-plot {
  width: 100%;
  height: auto;
  display: block;
  touch-action: none;
  user-select: none;
}

.econ-plot-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.econ-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

.econ-stat {
  flex: 1 1 120px;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-left: 3px solid var(--usm-blue);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
}

.econ-stat.is-gold { border-left-color: var(--usm-gold); }
.econ-stat.is-red { border-left-color: var(--usm-red); }

/* Sin text-transform: las mayúsculas convertirían μ en M y σ en Σ. */
.econ-stat span {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  opacity: 0.7;
}

.econ-stat strong {
  display: block;
  font-size: 0.95rem;
  font-variant-numeric: tabular-nums;
}

.econ-note {
  font-size: 0.78rem;
  margin-top: 0.7rem;
  padding: 0.5rem 0.7rem;
  border-radius: 6px;
  background: var(--md-accent-fg-color--transparent);
}

/* SVG primitives ----------------------------------------------------------*/
.econ-plot .ax { stroke: var(--econ-muted); stroke-width: 1; }
.econ-plot .grid { stroke: var(--econ-grid); stroke-width: 1; }
.econ-plot text { fill: var(--econ-ink); font-size: 11px; font-family: inherit; }
.econ-plot text.muted { fill: var(--econ-muted); }
.econ-plot .pt { fill: var(--usm-blue); fill-opacity: 0.75; }
.econ-plot .pt-alt { fill: var(--usm-gold); fill-opacity: 0.9; }
.econ-plot .pt-red { fill: var(--usm-red); fill-opacity: 0.8; }
.econ-plot .bar { fill: var(--usm-blue); fill-opacity: 0.7; }
.econ-plot .bar-gold { fill: var(--usm-gold); }
.econ-plot .bar-red { fill: var(--usm-red); fill-opacity: 0.8; }
.econ-plot .bar-navy { fill: var(--usm-navy); }
.econ-plot .line { stroke: var(--usm-red); stroke-width: 2.5; fill: none; }
.econ-plot .line-gold { stroke: var(--usm-gold); stroke-width: 2.5; fill: none; }
.econ-plot .line-navy { stroke: var(--usm-navy); stroke-width: 2.5; fill: none; }
.econ-plot .line-dash { stroke-dasharray: 6 4; }
.econ-plot .resid { stroke: var(--usm-red); stroke-width: 1.2; stroke-opacity: 0.55; }
.econ-plot .sq { fill: var(--usm-red); fill-opacity: 0.08; stroke: var(--usm-red); stroke-opacity: 0.25; }
.econ-plot .ci-hit { stroke: var(--usm-blue); stroke-width: 2; }
.econ-plot .ci-miss { stroke: var(--usm-red); stroke-width: 2.5; }
.econ-plot .mu { stroke: var(--usm-gold); stroke-width: 2; }
.econ-plot .drag { cursor: grab; }

[data-md-color-scheme="slate"] .econ-plot .bar-navy { fill: #8fa3e8; }
[data-md-color-scheme="slate"] .econ-plot .line-navy { stroke: #8fa3e8; }

/* Tabla de outcomes potenciales -------------------------------------------*/
.econ-po-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  margin: 0.4rem 0;
}

.econ-po-table th,
.econ-po-table td {
  padding: 0.35rem 0.5rem;
  text-align: center;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

.econ-po-table th {
  background: var(--usm-navy);
  color: #fff;
  font-weight: 600;
}

.econ-po-table td.hidden-po {
  color: var(--econ-muted);
  font-style: italic;
}

.econ-po-table td.revealed-po {
  color: var(--usm-red);
  font-weight: 700;
}

/* Quizzes -----------------------------------------------------------------*/
.econ-quiz {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-left: 5px solid var(--usm-gold);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  margin: 1.2rem 0;
}

.econ-quiz-q {
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.econ-quiz-opts {
  display: grid;
  gap: 0.4rem;
}

.econ-quiz-opt {
  text-align: left;
  font: inherit;
  font-size: 0.82rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--md-default-fg-color--lighter);
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.econ-quiz-opt:hover { border-color: var(--usm-blue); }
.econ-quiz-opt.is-right { border-color: #2e8b57; background: #2e8b5722; }
.econ-quiz-opt.is-wrong { border-color: var(--usm-red); background: color-mix(in srgb, var(--usm-red) 12%, transparent); }

.econ-quiz-fb {
  font-size: 0.8rem;
  margin-top: 0.6rem;
  display: none;
}

.econ-quiz-fb.is-visible { display: block; }

/* Bloque de agenda de la clase -------------------------------------------*/
.econ-agenda-break td {
  font-style: italic;
  opacity: 0.75;
}

/* Tarjetas de semana en el calendario ---------------------------------------*/
.econ-week {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-left: 5px solid var(--usm-blue);
  border-radius: 8px;
  padding: 0.8rem 1.1rem;
  margin: 0.9rem 0;
}

.econ-week.is-eval { border-left-color: var(--usm-red); }
.econ-week.is-now { border-left-color: var(--usm-gold); background: var(--md-accent-fg-color--transparent); }

.econ-week h3 {
  margin: 0 0 0.3rem 0 !important;
  font-size: 0.95rem;
}

.econ-week ul {
  margin: 0.2rem 0 0 0 !important;
}

.econ-pill {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.08rem 0.5rem;
  border-radius: 999px;
  margin-left: 0.3rem;
  vertical-align: middle;
  background: var(--usm-red);
  color: #fff;
}

.econ-pill.is-gold { background: var(--usm-gold); color: var(--usm-navy-dark); }
.econ-pill.is-grey { background: var(--md-default-fg-color--lighter); color: var(--md-default-bg-color); }
.econ-pill.is-blue { background: var(--usm-blue); }

@media (max-width: 600px) {
  .econ-widget { padding: 0.8rem 0.8rem 0.9rem 0.8rem; }
  .econ-controls { grid-template-columns: 1fr 1fr; }
}

/* Proporciones de columnas solo en pantallas anchas; en celular se apilan. */
@media (min-width: 760px) {
  .econ-plot-row.is-2-1 { grid-template-columns: 2fr 1fr; }
  .econ-plot-row.is-3-2 { grid-template-columns: 3fr 2fr; }
}

/* ==========================================================================
   Láminas oficiales convertidas desde los .tex (tools/clases.py)
   ========================================================================== */
.econ-source {
  font-size: 0.74rem;
  opacity: 0.75;
  margin-top: -0.4rem;
}

/* Figuras de las diapositivas: fondo blanco para que se lean también en modo oscuro */
.md-typeset img.econ-slide-img {
  display: block;
  max-width: min(560px, 100%);
  margin: 0.8rem auto;
  background: #fff;
  border-radius: 6px;
  padding: 4px;
}

/* Figuras TikZ re-dibujadas */
/* Prefijo .md-typeset: Material fija ".md-typeset svg { max-width: 100% }" */
.md-typeset .econ-tikz-svg {
  display: inline-block;
  width: 100%;
  max-width: 240px;
  height: auto;
  vertical-align: middle;
  margin: 0.4rem 0;
  font-size: 13px;
}

.md-typeset .econ-tikz-svg.econ-dag { max-width: 190px; }

.econ-tikz-tree {
  max-width: 560px;
  margin: 1rem auto;
  text-align: center;
  font-size: 0.85rem;
}

.econ-tikz-tree .t-root { font-weight: 700; }

.econ-tikz-tree .t-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 0.2rem 0;
}

.econ-tikz-tree .t-row > span { font-size: 1.4rem; line-height: 1; }

.econ-tikz-tree .t-cf { color: var(--usm-red); }


/* ==========================================================================
   Casos ilustrados (casos.js)
   Paleta de datos validada con el skill de dataviz (CVD y contraste):
   claro  #005f96 · #c28000 · #b30828   |   oscuro #3d9bd6 · #bf8a1a · #e15268
   ========================================================================== */
:root,
[data-md-color-scheme="default"] {
  --econ-c1: #005f96;
  --econ-c2: #c28000;
  --econ-c3: #b30828;
  --econ-seq-lo: #f3dca6;
  --econ-seq-hi: #8a5a00;
  --econ-ink-soft: #8a94ad;
  --econ-caso-bg: #f5f8fc;
}

[data-md-color-scheme="slate"] {
  --econ-c1: #3d9bd6;
  --econ-c2: #bf8a1a;
  --econ-c3: #e15268;
  --econ-seq-lo: #5b4a26;
  --econ-seq-hi: #f2c334;
  --econ-ink-soft: #6c7798;
  --econ-caso-bg: #161c38;
}

.econ-widget.econ-caso {
  border-top: 0;
  border-left: 5px solid var(--usm-gold);
  background: var(--econ-caso-bg);
  padding: 1.1rem 1.3rem 1.2rem;
}

.econ-caso-eyebrow {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--econ-c2);
}

.econ-caso-title {
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0.15rem 0 0.35rem;
  color: var(--usm-navy);
}

[data-md-color-scheme="slate"] .econ-caso-title { color: #eef1fb; }

.md-typeset .econ-caso-lead {
  font-size: 0.82rem;
  margin: 0 0 0.9rem;
  max-width: 62ch;
}

/* Escenas ilustradas: fondo propio (se ven igual en claro y oscuro) */
.econ-scene {
  overflow: hidden;
  display: block;
  width: 100%;
  height: auto;
  margin: 0.4rem 0 0.8rem;
  border-radius: 14px;
  user-select: none;
}

.econ-scene text { fill: #1b2a5e; font-size: 12px; font-family: var(--md-text-font-family, Roboto), sans-serif; }
.econ-scene .muted { fill: #5a6785; }
.econ-scene-bg { fill: #eef3fa; }

/* Anotaciones a plumón */
.econ-hand {
  font-family: "Caveat", "Comic Sans MS", cursive !important;
  font-size: 23px !important;
  font-weight: 700;
  fill: var(--usm-red) !important;
}

/* En gráficos: halo del color de fondo para que la anotación se lea sobre los puntos */
.econ-chart .econ-hand,
.econ-plot .econ-hand {
  fill: var(--econ-c3) !important;
  paint-order: stroke;
  stroke: var(--md-default-bg-color);
  stroke-width: 5px;
  stroke-linejoin: round;
}

.econ-hand-stroke {
  fill: none;
  stroke: var(--usm-red);
  stroke-width: 2.5;
  stroke-linecap: round;
}

/* Capa ambiental: sol que gira, mar que respira, vapor de la sopa */
.econ-sun { transform-box: view-box; transform-origin: 520px 44px; }
.is-live .econ-sun { animation: econ-spin 40s linear infinite; }
.is-live .econ-wave { animation: econ-breathe 5s ease-in-out infinite alternate; }
@keyframes econ-spin { to { transform: rotate(360deg); } }
@keyframes econ-breathe { from { transform: translateX(0); } to { transform: translateX(-10px); } }

.econ-steam {
  fill: none;
  stroke: #9aa6c2;
  stroke-width: 3;
  stroke-linecap: round;
  opacity: 0;
}
.is-live .econ-steam { animation: econ-steam 2.6s ease-in-out infinite; }
@keyframes econ-steam {
  0% { opacity: 0; transform: translateY(6px); }
  40% { opacity: 0.8; }
  100% { opacity: 0; transform: translateY(-14px); }
}

/* Control segmentado (pasos de un caso) */
.econ-seg {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px;
  border-radius: 999px;
  background: var(--md-default-fg-color--lightest);
  margin: 0.2rem 0 0.6rem;
}

.econ-seg-btn {
  font: inherit;
  font-size: 0.74rem;
  font-weight: 700;
  border: 0;
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  background: transparent;
  color: var(--md-default-fg-color);
  cursor: pointer;
  transition: background 0.18s cubic-bezier(0.2, 0, 0, 1), color 0.18s;
}

.econ-seg-btn[aria-selected="true"] {
  background: var(--usm-navy);
  color: #fff;
}

.econ-seg-btn:focus-visible,
.econ-btn:focus-visible,
.econ-quiz-opt:focus-visible {
  outline: 2px solid var(--usm-gold);
  outline-offset: 2px;
}

/* Puntos y diagramas de datos */
.econ-dot { stroke: var(--md-default-bg-color); stroke-width: 2; }
.econ-node { fill: var(--md-default-bg-color); stroke: var(--econ-c1); stroke-width: 2; }
.econ-node-hot { fill: var(--econ-seq-lo); stroke: var(--econ-c2); stroke-width: 2; }
.econ-arrow { fill: none; stroke: var(--econ-c2); stroke-width: 2.5; }
.econ-arrowhead { fill: var(--econ-c2); }
.econ-arrow-q { stroke: var(--econ-ink-soft); stroke-width: 2; stroke-dasharray: 3 3; }
.econ-dag-side g,
.econ-dag-side path {
  transition: opacity 0.35s cubic-bezier(0.2, 0, 0, 1), transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-box: fill-box;
  transform-origin: center;
}
.econ-dag-side .is-hidden { opacity: 0; transform: translateY(-8px) scale(0.9); }

/* Insignias de factores ocultos */
.econ-badge-bg { fill: #ffffff; stroke: var(--usm-gold); stroke-width: 2; }
.econ-scene .econ-badge-txt { fill: #1b2a5e; font-size: 12px; }

/* Grilla de tipos de datos */
.econ-cell {
  fill: var(--md-default-fg-color--lightest);
  transform-box: fill-box;
  transform-origin: center;
  transition: fill 0.25s cubic-bezier(0.2, 0, 0, 1), transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.econ-cell.is-on { fill: var(--econ-c1); transform: scale(1.06); }

/* Barras del caso Literary Digest */
.econ-bar-c1 { fill: var(--econ-c1); }
.econ-bar-c3 { fill: var(--econ-c3); }
.econ-plot .econ-bar-lbl { fill: var(--md-default-fg-color); font-size: 12px; }

/* Cifras de casos reales */
.econ-reales {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.9rem;
}

.econ-real {
  background: var(--md-default-bg-color);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  border: 1px solid var(--md-default-fg-color--lightest);
}

.econ-real-icon { font-size: 1.6rem; line-height: 1; }

.econ-real-num {
  display: block;
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--econ-c1);
}

.econ-real-lbl { display: block; font-size: 0.78rem; font-weight: 700; }
.md-typeset .econ-real p { font-size: 0.78rem; margin: 0.5rem 0; }

/* Tiles media / mediana */
.econ-tiles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin: 0.6rem 0;
}

.econ-tile {
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  background: var(--md-default-bg-color);
  border-left: 5px solid var(--econ-c1);
}

.econ-tile.is-c2 { border-left-color: var(--econ-c2); }
.econ-tile span { display: block; font-size: 0.7rem; font-weight: 700; opacity: 0.75; }
.econ-tile strong { display: block; font-size: 1.8rem; font-variant-numeric: tabular-nums; line-height: 1.15; }
.econ-tile em { font-size: 0.68rem; opacity: 0.7; }

/* Máquina de Galton y aros */
.econ-galton { display: block; width: 100%; height: auto; max-width: 600px; margin: 0.3rem auto 0.6rem; }
.econ-ring { fill: none; stroke: #005f96; stroke-width: 3; }
.econ-ring.is-miss { stroke: #b30828; }

/* Llamados "¿Sabías que?" y letra chica */
.econ-sabias {
  margin-top: 0.8rem;
  font-size: 0.8rem;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  border: 1px dashed var(--econ-c2);
}

.econ-fine { font-size: 0.7rem; opacity: 0.65; }

@media (prefers-reduced-motion: reduce) {
  .is-live .econ-sun,
  .is-live .econ-wave,
  .is-live .econ-steam { animation: none; }
  .econ-cell,
  .econ-dag-side g,
  .econ-dag-side path,
  .econ-seg-btn { transition: none; }
}

/* Fórmulas anchas de las láminas: scroll horizontal propio en pantallas chicas */
.md-typeset div.arithmatex {
  overflow-x: auto;
  overflow-y: hidden;
}

/* Control de pasos: en celular se reparte en líneas sin deformarse */
@media (max-width: 600px) {
  .econ-seg {
    display: flex;
    border-radius: 14px;
  }

  .econ-seg-btn {
    flex: 1 1 100%;
    border-radius: 10px;
    text-align: left;
  }
}

@media (max-width: 600px) {
  /* Fórmulas en línea muy largas (p. ej. la de diferencia de medias) */
  .md-typeset span.arithmatex {
    display: inline-block;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    vertical-align: middle;
  }
}

/* \color{blue} / \color{red} de las láminas: en modo oscuro el azul puro es ilegible */
[data-md-color-scheme="slate"] mjx-container [style*="color: blue"] { color: #8fb8ff !important; }
[data-md-color-scheme="slate"] mjx-container [style*="color: red"] { color: #ff8f9c !important; }

/* ---------- Historia por pasos (casos reales) ---------- */
.econ-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.5rem 0 0.6rem;
}

.econ-step-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font: inherit;
  font-size: 0.74rem;
  font-weight: 700;
  border: 1px solid var(--md-default-fg-color--lighter);
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  border-radius: 999px;
  padding: 0.25rem 0.75rem 0.25rem 0.3rem;
  cursor: pointer;
  transition: background 0.18s cubic-bezier(0.2, 0, 0, 1), border-color 0.18s;
}

.econ-step-pill span {
  display: inline-grid;
  place-items: center;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: var(--md-default-fg-color--lightest);
  font-size: 0.7rem;
}

.econ-step-pill.is-done span { background: var(--econ-c2); color: #fff; }
.econ-step-pill[aria-selected="true"] { background: var(--usm-navy); border-color: var(--usm-navy); color: #fff; }
.econ-step-pill[aria-selected="true"] span { background: var(--usm-gold); color: var(--usm-navy-dark); }

.econ-step-body {
  font-size: 0.82rem;
  line-height: 1.55;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  background: var(--md-default-bg-color);
  border-left: 4px solid var(--econ-c2);
  min-height: 5.5rem;
}

.econ-step-body.is-in { animation: econ-rise 0.32s cubic-bezier(0.2, 0, 0, 1); }
@keyframes econ-rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.econ-btn:disabled { opacity: 0.4; cursor: default; }

/* Íconos de escuelas y fábricas */
.econ-roof { fill: #1b2a5e; transition: fill 0.3s; }
.econ-wall { fill: #3f6aa8; transition: fill 0.3s; }
.econ-roof.is-off, .econ-wall.is-off { fill: #c7cfdf; }
.econ-wall.is-t { fill: #c28000; }
.econ-wall.is-c { fill: #8fa3c8; }

/* ---------- Casos de métodos de muestreo ---------- */
.econ-pop { fill: #c7cfdf; transition: fill 0.25s; }
.econ-pop.is-on { fill: #c28000; stroke: #1b2a5e; stroke-width: 1.5; }

.econ-belt { transform-box: view-box; }
.is-live .econ-belt { animation: econ-belt 9s linear infinite; }
@keyframes econ-belt { from { transform: translateX(0); } to { transform: translateX(400px); } }

.econ-cluster {
  fill: #ffffff;
  stroke: #c7cfdf;
  stroke-width: 2;
  transition: opacity 0.4s, stroke 0.25s;
  transform-box: fill-box;
  transform-origin: center;
}
.econ-cluster.is-on { stroke: #c28000; stroke-width: 4; }
.econ-cluster.is-dim { opacity: 0.45; }

.econ-metodo {
  font-size: 0.82rem;
  background: var(--md-default-bg-color);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
}

.econ-metodo-caso { font-size: 0.86rem; margin-bottom: 0.3rem; }
.md-typeset .econ-metodo ol { margin: 0.3rem 0 0.6rem 1.2rem; }
.md-typeset .econ-metodo li { margin-bottom: 0.15rem; }

.econ-metodo-pc {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.econ-metodo-pc > div {
  padding: 0.45rem 0.6rem;
  border-radius: 8px;
  background: var(--econ-caso-bg);
}

@media (max-width: 600px) {
  .econ-metodo-pc { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .is-live .econ-belt { animation: none; }
  .econ-step-body.is-in { animation: none; }
}

/* ==========================================================================
   Estructura de las clases: franja por parte + tarjeta por tema (tools/clases.py)
   ========================================================================== */
.md-typeset h2.econ-parte {
  margin: 2.8rem 0 0.4rem;
  padding: 1.1rem 1.4rem 1.2rem;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(120deg, var(--usm-navy-dark) 0%, var(--usm-navy) 60%, #24438a 100%);
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.25;
  scroll-margin-top: 4.5rem;
}

.md-typeset h2.econ-parte::before {
  content: attr(data-eyebrow);
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--usm-gold);
}

.md-typeset h2.econ-parte.is-ayudantia {
  background: linear-gradient(120deg, #00456e 0%, var(--usm-blue) 70%, #2b86bd 100%);
}

.md-typeset h2.econ-parte.is-ayudantia::before { color: #ffffff; opacity: 0.85; }

.md-typeset h2.econ-parte + .econ-source { margin: 0.2rem 0 1rem 0.2rem; }

/* Tarjeta de un tema (una o varias láminas con el mismo título) */
.md-typeset .econ-lamina {
  margin: 1.2rem 0;
  padding: 0 1.3rem 0.5rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-left: 5px solid var(--usm-navy);
  border-radius: 12px;
  background: var(--md-default-bg-color);
  box-shadow: 0 1px 3px rgba(16, 25, 59, 0.06);
}

.md-typeset .econ-lamina.is-ayudantia { border-left-color: var(--usm-blue); }

/* Bloque normal (no flex): con flex, cada fórmula del título era un ítem aparte y el
   título no podía partirse en líneas, desbordando la pantalla en celular. */
.md-typeset .econ-lamina > h3 {
  position: relative;
  margin: 0 -1.3rem 0.9rem;
  padding: 0.7rem 8rem 0.7rem 1.3rem;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0 12px 0 0;
  background: color-mix(in srgb, var(--usm-navy) 7%, transparent);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--usm-navy);
  scroll-margin-top: 4.5rem;
}

.md-typeset .econ-lamina.is-ayudantia > h3 { background: color-mix(in srgb, var(--usm-blue) 9%, transparent); }

.md-typeset .econ-lamina > h3::after {
  content: attr(data-lamina);
  position: absolute;
  top: 0.95rem;
  right: 1.3rem;
  white-space: nowrap;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
}

[data-md-color-scheme="slate"] .md-typeset .econ-lamina { border-left-color: #8fa3e8; box-shadow: none; }
[data-md-color-scheme="slate"] .md-typeset .econ-lamina.is-ayudantia { border-left-color: var(--usm-blue); }
[data-md-color-scheme="slate"] .md-typeset .econ-lamina > h3 { color: #eef1fb; background: rgba(255, 255, 255, 0.04); }

.md-typeset .econ-lamina-cont {
  margin: 0.7rem 0 0.6rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
}

/* Las imágenes de lámina dentro de la tarjeta no necesitan margen extra */
.md-typeset .econ-lamina > p:last-child { margin-bottom: 0.6rem; }

@media (max-width: 600px) {
  .md-typeset .econ-lamina > h3 { padding-right: 1.3rem; }
  .md-typeset .econ-lamina > h3::after {
    position: static;
    display: block;
    margin-top: 0.2rem;
  }
}