/* =============================================================================
   Centro de Aprendizaje — Portal de capacitaciones y soporte interno
   Sistema de diseño: sobrio, institucional, un solo color de acento.
   Heredado 1:1 de timbo-capacitacion/assets/css/styles.css (ya validado).
   ============================================================================= */

:root {
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --bg: #f6f7fa;
  --surface: #ffffff;
  --surface-sunken: #f0f2f6;
  --border: #e3e6ec;
  --border-strong: #cdd2dc;

  --text: #1c222b;
  --text-muted: #5b6472;
  --text-faint: #8891a0;

  --accent: #2456c7;
  --accent-hover: #1d47a8;
  --accent-soft: #eaf0fd;
  --accent-soft-border: #c9d9f8;

  --success: #1b8a4c;
  --success-soft: #e8f6ee;
  --warning: #9a5b10;
  --warning-soft: #fdf1e2;
  --danger: #a4312a;
  --danger-soft: #fbeceb;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(20, 26, 40, 0.06), 0 1px 1px rgba(20, 26, 40, 0.04);
  --shadow-md: 0 6px 20px rgba(20, 26, 40, 0.09), 0 2px 6px rgba(20, 26, 40, 0.06);

  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --dur-fast: 120ms;
  --dur: 200ms;

  color-scheme: light;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; }

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection { background: var(--accent-soft-border); }

h1, h2, h3, h4 { margin: 0 0 0.5em; font-weight: 650; letter-spacing: -0.01em; }
p { margin: 0 0 1em; color: var(--text); }
p:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------------- Shell ---- */

.shell {
  display: grid;
  grid-template-columns: 264px 1fr;
  grid-template-rows: 60px 1fr;
  grid-template-areas:
    "topbar topbar"
    "sidebar main";
  min-height: 100vh;
}

.topbar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 30;
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  white-space: nowrap;
}
.topbar__brand-mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  flex: none;
}

.topbar__search {
  flex: 1;
  max-width: 440px;
}

.topbar__spacer { flex: 1; }

.topbar__menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.topbar__menu-btn:hover { background: var(--surface-sunken); border-color: var(--border-strong); }

.topbar__search-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 15px;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.topbar__search-btn:hover { background: var(--surface-sunken); border-color: var(--border-strong); }

.sidebar {
  grid-area: sidebar;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 16px 12px 24px;
  overflow-y: auto;
  position: sticky;
  top: 60px;
  height: calc(100vh - 60px);
}

.sidebar__section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  padding: 14px 10px 6px;
}
.sidebar__section-title:first-child { padding-top: 4px; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.nav-link:hover { background: var(--surface-sunken); color: var(--text); text-decoration: none; }
.nav-link.is-active { background: var(--accent-soft); color: var(--accent-hover); }
.nav-link__icon { min-width: 18px; text-align: center; flex: none; }
.nav-link__progress {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

main.content {
  grid-area: main;
  padding: 28px 32px 64px;
  max-width: 980px;
  width: 100%;
  min-width: 0;
  margin: 0 auto;
}

/* ------------------------------------------------------------ Breadcrumbs --- */

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-faint);
  margin-bottom: 18px;
}
.breadcrumbs a { color: var(--text-muted); }
.breadcrumbs span.sep { color: var(--border-strong); }

/* ------------------------------------------------------------------ Cards -- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.card-link {
  display: block;
  padding: 20px;
  text-decoration: none;
  color: inherit;
}
.card-link:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--border-strong);
  text-decoration: none;
}
.card-link:active { transform: translateY(0); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.home-card__icon { font-size: 26px; margin-bottom: 10px; display: block; }
.home-card__title { font-size: 16px; font-weight: 650; margin-bottom: 4px; }
.home-card__desc { font-size: 13px; color: var(--text-muted); }

.module-card { padding: 18px 20px; }
.module-card__head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.module-card__icon { font-size: 22px; }
.module-card__title { font-size: 16px; font-weight: 650; }
.module-card__summary { font-size: 13.5px; color: var(--text-muted); margin-bottom: 12px; }
.module-card__meta { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--text-faint); }

/* ---------------------------------------------------------------- Badges --- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
}
.badge--basico { background: var(--success-soft); color: var(--success); }
.badge--intermedio { background: var(--warning-soft); color: var(--warning); }
.badge--avanzado { background: var(--danger-soft); color: var(--danger); }
.badge--neutral { background: var(--surface-sunken); color: var(--text-muted); }
.badge--verified { background: var(--success-soft); color: var(--success); }
.badge--unverified { background: var(--warning-soft); color: var(--warning); }

/* --------------------------------------------------------------- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 600;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-hover); }
.btn--primary:disabled { background: var(--border-strong); color: var(--text-faint); cursor: not-allowed; }

.btn--ghost { background: transparent; border-color: var(--border); color: var(--text-muted); }
.btn--ghost:hover { background: var(--surface-sunken); border-color: var(--border-strong); color: var(--text); }

.btn--subtle {
  background: transparent;
  color: var(--text-faint);
  padding: 7px 12px;
  font-weight: 500;
}
.btn--subtle:hover { background: var(--surface-sunken); color: var(--text-muted); }

.btn--sm { padding: 6px 12px; font-size: 13px; }
.btn--icon { padding: 7px; width: 34px; height: 34px; }

/* ----------------------------------------------------------------- Input --- */

.input {
  width: 100%;
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px 9px 36px;
  font-size: 14px;
  color: var(--text);
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.input:focus {
  background: var(--surface);
  border-color: var(--accent);
  outline: none;
}
.input-wrap { position: relative; }
.input-wrap__icon {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-faint);
  font-size: 14px;
  pointer-events: none;
}

/* -------------------------------------------------------------- Progress --- */

.progress-bar {
  height: 8px;
  border-radius: 999px;
  background: var(--surface-sunken);
  overflow: hidden;
}
.progress-bar__fill {
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 400ms var(--ease);
}
.progress-bar--sm { height: 6px; }

.progress-ring-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ------------------------------------------------------------------ Hero --- */

.hero {
  margin-bottom: 8px;
}
.hero__eyebrow {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 8px;
}
.hero h1 { font-size: 26px; }
.hero__desc { color: var(--text-muted); font-size: 15px; max-width: 640px; }

/* --------------------------------------------------------------- Section --- */

.section { margin: 32px 0; }
.section__title { font-size: 18px; margin-bottom: 14px; }

/* ----------------------------------------------------------------- Steps --- */

.step {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--border);
}
.step:first-of-type { border-top: none; }
.step__number {
  flex: none;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-hover);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
}
.step__body { flex: 1; min-width: 0; }
.step__explanation { margin-bottom: 10px; }
.step__meta { display: grid; gap: 8px; margin-top: 10px; }
.step__meta-row { font-size: 13.5px; }
.step__meta-row b { color: var(--text); }
.step__image {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: zoom-in;
  background: var(--surface-sunken);
  display: inline-block;
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.step__image:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.step__image img { display: block; }
.step__caption { font-size: 12.5px; color: var(--text-faint); margin-top: 6px; }

/* ------------------------------------------------------------- Callouts --- */

.callout {
  display: flex;
  gap: 10px;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin: 14px 0;
  border: 1px solid transparent;
}
.callout__icon { flex: none; font-size: 16px; line-height: 1.4; }
.callout--tip { background: var(--accent-soft); border-color: var(--accent-soft-border); color: #1a3a82; }
.callout--warning { background: var(--warning-soft); color: var(--warning); border-color: #f0d9b5; }
.callout--practice { background: var(--success-soft); color: #15603a; border-color: #bfe6cf; }

.concepts-list { display: grid; gap: 10px; margin: 14px 0; }
.concepts-list__item {
  background: var(--surface-sunken);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13.5px;
}
.concepts-list__term { font-weight: 650; color: var(--text); }

.prereq-list { margin: 10px 0 14px; padding-left: 20px; font-size: 14px; color: var(--text-muted); }
.prereq-list li { margin-bottom: 4px; }

/* ------------------------------------------------------------------- Quiz -- */

.quiz-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
  margin-top: 16px;
}
.quiz-question { margin-bottom: 22px; }
.quiz-question:last-child { margin-bottom: 0; }
.quiz-question__text { font-weight: 600; margin-bottom: 12px; font-size: 14.5px; }

.quiz-options { display: grid; gap: 8px; }
.quiz-option {
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  width: 100%;
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text);
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.quiz-option:hover:not(:disabled) { border-color: var(--border-strong); background: #eceff4; }
.quiz-option.is-selected { border-color: var(--accent); background: var(--accent-soft); }
.quiz-option.is-correct { border-color: var(--success); background: var(--success-soft); color: #15603a; }
.quiz-option.is-incorrect { border-color: var(--danger); background: var(--danger-soft); color: var(--danger); }
.quiz-option:disabled { cursor: default; }

.quiz-order-list { display: grid; gap: 6px; list-style: none; margin: 0 0 14px; padding: 0; }
.quiz-order-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 10px 9px 14px;
  font-size: 13.5px;
}
.quiz-order-item.is-correct-pos { border-color: var(--success); background: var(--success-soft); }
.quiz-order-item.is-wrong-pos { border-color: var(--danger); background: var(--danger-soft); }
.quiz-order-item__controls { margin-left: auto; display: flex; gap: 4px; }

.quiz-checklist { display: grid; gap: 8px; margin-bottom: 4px; }
.quiz-checklist label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  cursor: pointer;
}
.quiz-checklist input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); }

.quiz-feedback {
  margin-top: 10px;
  font-size: 13.5px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
}
.quiz-feedback--correct { background: var(--success-soft); color: #15603a; }
.quiz-feedback--incorrect { background: var(--danger-soft); color: var(--danger); }

.quiz-score {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent-hover);
  font-weight: 600;
  margin-top: 12px;
}

/* ------------------------------------------------------------ Lesson nav --- */

.lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.lesson-complete-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--surface-sunken);
}

.checkbox-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--dur-fast) var(--ease);
}
.checkbox-pill.is-done { background: var(--success-soft); border-color: #bfe6cf; color: var(--success); }

/* ----------------------------------------------------------------- Table --- */

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); }
table.data-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.data-table th, .data-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.data-table th { background: var(--surface-sunken); font-weight: 650; color: var(--text-muted); }
.data-table tr:last-child td { border-bottom: none; }

/* ---------------------------------------------------------------- Diagram -- */
/* Esquemas ilustrativos para pantallas sin captura real disponible. Nunca se
   presentan como capturas: llevan siempre la etiqueta y, si hay datos de
   pacientes, se muestran con "redacted-bar" en vez de texto real. */

.diagram {
  margin-top: 14px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--surface-sunken);
  padding: 16px;
}
.diagram__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-faint);
  margin-bottom: 12px;
}
.diagram__title { font-size: 13.5px; font-weight: 650; margin-bottom: 10px; color: var(--text); }
.diagram__note { font-size: 12.5px; color: var(--text-faint); margin-top: 10px; }

.diagram-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 8px; }
.diagram-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  text-align: center;
}
.diagram-card__value { font-size: 18px; font-weight: 700; color: var(--accent-hover); }
.diagram-card__label { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.diagram-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 4px; }
.diagram-tab {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-muted);
}
.diagram-tab.is-active { background: var(--accent); border-color: var(--accent); color: #fff; }

.diagram-list { display: grid; gap: 6px; }
.diagram-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: 13px;
}
.diagram-list-item__label { font-weight: 600; color: var(--text); }
.diagram-list-item__hint { font-size: 11.5px; color: var(--text-faint); }

.redacted-bar {
  display: inline-block;
  height: 10px;
  width: 64px;
  border-radius: 4px;
  background: repeating-linear-gradient(135deg, #c9ccd4, #c9ccd4 4px, #dcdee3 4px, #dcdee3 8px);
  vertical-align: middle;
}

/* ------------------------------------------------------------- Situation --- */

.situation-card { padding: 18px 20px; margin-bottom: 14px; }
.situation-card__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.situation-card__title { font-weight: 650; font-size: 15px; }
.situation-card__desc { font-size: 13.5px; color: var(--text-muted); margin-bottom: 10px; }
.situation-card__label { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-faint); margin-top: 10px; }
.situation-card__text { font-size: 13.5px; white-space: pre-line; }

/* ----------------------------------------------------------------- Search -- */

.search-overlay {
  position: fixed; inset: 0;
  background: rgba(20, 26, 40, 0.42);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 10vh 16px;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}
.search-overlay.is-open { opacity: 1; pointer-events: auto; }

.search-modal {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 580px;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  transform: translateY(-8px);
  transition: transform var(--dur) var(--ease);
}
.search-overlay.is-open .search-modal { transform: translateY(0); }

.search-modal__input-row { padding: 14px; border-bottom: 1px solid var(--border); }
.search-modal__results { overflow-y: auto; padding: 8px; }
.search-result {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text);
}
.search-result:hover { background: var(--surface-sunken); text-decoration: none; }
.search-result__kind { font-size: 11px; color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; }
.search-result__title { font-size: 14px; font-weight: 600; margin-top: 2px; }
.search-empty { padding: 24px 16px; text-align: center; color: var(--text-faint); font-size: 13.5px; }

/* --------------------------------------------------------------- Lightbox -- */

.lightbox-overlay {
  position: fixed; inset: 0;
  background: rgba(10, 14, 22, 0.78);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}
.lightbox-overlay.is-open { opacity: 1; pointer-events: auto; }
.lightbox-overlay img {
  max-height: 86vh;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  transform: scale(0.97);
  transition: transform var(--dur) var(--ease);
}
.lightbox-overlay.is-open img { transform: scale(1); }
.lightbox-close {
  position: absolute; top: 20px; right: 24px;
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: none;
  border-radius: 999px;
  width: 38px; height: 38px;
}
.lightbox-close:hover { background: rgba(255,255,255,0.22); }

/* ----------------------------------------------------------------- Toast -- */

.toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translate(-50%, 16px);
  background: var(--text);
  color: #fff;
  padding: 11px 18px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: all var(--dur) var(--ease);
  z-index: 300;
}
.toast.is-open { opacity: 1; transform: translate(-50%, 0); }

/* --------------------------------------------------------------- Helpers --- */

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-muted { color: var(--text-muted); }
.empty-state { text-align: center; padding: 48px 16px; color: var(--text-faint); }
.empty-state__icon { font-size: 32px; margin-bottom: 10px; }

.module-filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.filter-chip {
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 13px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-muted);
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.filter-chip:hover { border-color: var(--border-strong); color: var(--text); }
.filter-chip.is-active { background: var(--accent); border-color: var(--accent); color: #fff; }

.lesson-list { display: grid; gap: 8px; margin: 18px 0; }
.lesson-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}
.lesson-row:hover { border-color: var(--border-strong); background: var(--surface-sunken); text-decoration: none; }
.lesson-row__check {
  flex: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px;
  color: transparent;
}
.lesson-row.is-done .lesson-row__check { background: var(--success); border-color: var(--success); color: #fff; }
.lesson-row__title { font-weight: 600; font-size: 14px; flex: 1; }
.lesson-row__meta { font-size: 12px; color: var(--text-faint); white-space: nowrap; }

/* -------------------------------------------------------------- Glossary --- */

.glossary-grid { display: grid; gap: 12px; }
.glossary-item { padding: 16px 18px; scroll-margin-top: 76px; }
.glossary-item__term { font-weight: 650; font-size: 14.5px; margin-bottom: 4px; }
.glossary-item__def { font-size: 13.5px; color: var(--text-muted); margin-bottom: 6px; }
.glossary-item__meta { font-size: 11.5px; color: var(--text-faint); }
.glossary-jump { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.glossary-jump a {
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 9px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-muted);
}
.glossary-jump a:hover { color: var(--accent); text-decoration: none; }

/* --------------------------------------------------------------- Chatbot --- */

.chatbot-fab {
  position: fixed;
  right: 20px; bottom: 20px;
  z-index: 260;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px 12px 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  box-shadow: var(--shadow-md);
  font-weight: 650;
  font-size: 13.5px;
  transition: background var(--dur) var(--ease), transform var(--dur-fast) var(--ease);
}
.chatbot-fab:hover { background: var(--accent-hover); }
.chatbot-fab:active { transform: translateY(1px); }
.chatbot-fab__icon { font-size: 18px; line-height: 1; }
.chatbot-fab[aria-expanded="true"] { background: var(--accent-hover); }

.chatbot-panel {
  position: fixed;
  right: 20px; bottom: 86px;
  z-index: 261;
  width: 360px;
  max-width: calc(100vw - 40px);
  height: 480px;
  max-height: calc(100vh - 120px);
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(10px) scale(0.98);
  transform-origin: bottom right;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.chatbot-panel.is-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.chatbot-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  flex: none;
}
.chatbot-panel__title { font-weight: 650; font-size: 14px; }
.chatbot-panel__close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  line-height: 1;
  width: 30px; height: 30px;
  border-radius: 999px;
}
.chatbot-panel__close:hover { background: var(--surface-sunken); color: var(--text); }

.chatbot-panel__messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chatbot-msg {
  max-width: 86%;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  line-height: 1.45;
  animation: chatbot-msg-in var(--dur) var(--ease);
}
.chatbot-msg--bot {
  align-self: flex-start;
  background: var(--surface-sunken);
  color: var(--text);
  border-bottom-left-radius: 4px;
}
.chatbot-msg--usuario {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.chatbot-msg__link {
  display: inline-block;
  margin-top: 6px;
  font-weight: 700;
  font-size: 12.5px;
}

@keyframes chatbot-msg-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.chatbot-panel__form {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--border);
  flex: none;
}
.chatbot-panel__form .input { flex: 1; }
.chatbot-panel__send {
  flex: none;
  width: 38px; height: 38px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  transition: background var(--dur-fast) var(--ease);
}
.chatbot-panel__send:hover { background: var(--accent-hover); }

/* Bloque "video" de un tutorial: link a YouTube con aviso por si está
   bloqueado en la red del hospital. */
.video-link {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 16px 0;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
}
.video-link:hover { border-color: var(--accent-soft-border); background: var(--accent-soft); text-decoration: none; }
.video-link__icon { font-size: 22px; line-height: 1; }
.video-link__title { display: block; font-weight: 650; font-size: 14px; }
.video-link__meta { display: block; font-size: 12.5px; color: var(--text-muted); }

/* ------------------------------------------------------------ Mobile nav --- */

.sidebar-scrim {
  display: none;
  position: fixed; inset: 0;
  background: rgba(20, 26, 40, 0.4);
  z-index: 19;
}

/* --------------------------------------------------------------- Mobile --- */

@media (max-width: 880px) {
  .shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "main";
  }
  .topbar__menu-btn { display: flex; }
  .sidebar {
    position: fixed;
    top: 60px; left: 0;
    width: 260px;
    height: calc(100vh - 60px);
    transform: translateX(-100%);
    transition: transform var(--dur) var(--ease);
    z-index: 20;
  }
  .sidebar.is-open { transform: translateX(0); }
  .sidebar.is-open ~ .sidebar-scrim { display: block; }
  .topbar__search { display: none; }
  .topbar__search-btn { display: flex; }
  main.content { padding: 20px 16px 48px; }
  .step { flex-direction: column; gap: 8px; }
  .chatbot-fab__label { display: none; }
  .chatbot-fab { padding: 13px; right: 16px; bottom: 16px; }
  .chatbot-panel {
    right: 12px; left: 12px; bottom: 80px;
    width: auto;
    max-width: none;
    height: min(70vh, 520px);
  }
}

@media (max-width: 520px) {
  .card-grid { grid-template-columns: 1fr; }
}

/* ------------------------------------------------------- prefers-reduced --- */

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 1ms !important; animation-duration: 1ms !important; }
  html { scroll-behavior: auto; }
}

/* ------------------------------------------------------ Panel de admin --- */

.admin-shell { max-width: 880px; margin: 0 auto; padding: 24px 24px 64px; }

.admin-topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.admin-topbar__brand { font-weight: 700; color: var(--text); }
.admin-topbar__spacer { flex: 1; }

.flash { padding: 11px 16px; border-radius: var(--radius-sm); font-size: 13.5px; margin-bottom: 14px; }
.flash--ok { background: var(--success-soft); color: var(--success); }
.flash--error { background: var(--danger-soft); color: var(--danger); }

.admin-form { display: grid; gap: 14px; max-width: 640px; }
.admin-field { display: grid; gap: 6px; }
.admin-field label { font-size: 13px; font-weight: 650; color: var(--text-muted); }
.admin-field textarea.input { min-height: 90px; padding: 10px 12px; font-family: inherit; resize: vertical; }
.admin-field textarea.input--code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; min-height: 220px; }
.admin-field .text-faint { font-size: 12px; color: var(--text-faint); }
.admin-field select.input { padding-left: 12px; }
.admin-field-row { display: flex; gap: 14px; flex-wrap: wrap; }
.admin-field-row .admin-field { flex: 1; min-width: 160px; }
.admin-check { display: flex; align-items: center; gap: 8px; font-size: 14px; }

.admin-list { display: grid; gap: 8px; margin: 12px 0 24px; }
.admin-list-item {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.admin-list-item__title { font-weight: 600; font-size: 14px; flex: 1; min-width: 0; }
.admin-list-item__meta { font-size: 12px; color: var(--text-faint); }
.admin-list-item__actions { display: flex; gap: 4px; flex: none; }

.admin-section-head { display: flex; align-items: center; justify-content: space-between; margin: 28px 0 10px; }

.editor-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.editor-grid__preview { border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px; background: var(--surface); position: sticky; top: 20px; max-height: 80vh; overflow-y: auto; }
@media (max-width: 880px) {
  .editor-grid { grid-template-columns: 1fr; }
  .editor-grid__preview { position: static; max-height: none; }
}

.upload-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; margin: 16px 0; }
.upload-grid__item { border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; background: var(--surface); }
.upload-grid__item img { display: block; width: 100%; height: 90px; object-fit: cover; }
.upload-grid__item-body { padding: 8px 10px; }
.upload-grid__item-name { font-size: 11px; color: var(--text-muted); word-break: break-all; margin-bottom: 6px; }