/* ══════════════════════════════════════════════════════
   Synthesis BioMed LMS — Public Styles
   ══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;600;700;800&family=DM+Sans:wght@400;500;600;700&display=swap');

:root {
  --sb-azul:    #080b87;
  --sb-lav:     #655dc6;
  --sb-azul-dk: #060880;
  --sb-lav-dk:  #5349b8;
  --sb-azul-lt: #e8e9f8;
  --sb-lav-lt:  #f0eeff;
  --sb-gc:      #F0F2FA;
  --sb-gm:      #DDE0F0;
  --sb-white:   #ffffff;
  --sb-text:    #1a1a2e;
  --sb-muted:   #6b7280;
  --sb-border:  #dde0f0;
  --sb-success: #10b981;
  --sb-danger:  #ef4444;
  --sb-warning: #f59e0b;
  --radius:     12px;
  --radius-sm:  8px;
  --shadow:     0 2px 16px rgba(8,11,135,.08);
  --shadow-md:  0 6px 24px rgba(8,11,135,.14);
  --font-head:  'Barlow Condensed', sans-serif;
  --font-body:  'DM Sans', system-ui, sans-serif;

  /* Paleta "comercial" del manual de marca (idéntica a la usada en el resto
     del sitio — SynthesisBioMed_Astra_CSS.css / cards-cursos-snippet.html).
     El catálogo y las tarjetas de venta usan estos tonos oscuros + cyan,
     no la paleta clara de arriba (esa queda para dashboards internos). */
  --sb-cyan:      #00c2d4;
  --sb-cyan-dk:   #0097a7;
  --sb-oscuro:    #07081a;
  --sb-oscuro-2:  #0d0f2e;
  --sb-azul-mid:  #1a1fa8;
  --sb-grad-cta:  linear-gradient(135deg, #00c2d4, #655dc6);
  --sb-grad-hero: linear-gradient(135deg, #07081a 0%, #0d0f2e 40%, #1a1fa8 75%, #655dc6 100%);
}

/* ── Base ───────────────────────────────────────────── */

.sb-lms, .sb-lms * { box-sizing: border-box; }

.sb-lms {
  font-family: var(--font-body);
  color: var(--sb-text);
  line-height: 1.6;
}

.sb-lms h1, .sb-lms h2, .sb-lms h3 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.05;
  text-transform: uppercase;
}

.sb-section-title {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 800;
  color: var(--sb-azul);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin: 28px 0 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sb-section-title::after {
  content: '';
  flex: 1;
  height: 2px;
  background: var(--sb-gm);
  border-radius: 2px;
}

/* ── Buttons ─────────────────────────────────────────── */

.sb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .2px;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .18s ease;
  white-space: nowrap;
}

.sb-btn:hover { text-decoration: none; transform: translateY(-2px); }
.sb-btn:active { transform: translateY(0) scale(.97); }

/* CTA principal: gradiente cyan→lavanda con brillo — el mismo botón "comercial"
   que ya se usa en el resto del sitio (Astra Custom CSS / header flotante). */
.sb-btn--primary {
  background: var(--sb-grad-cta);
  color: var(--sb-white) !important;
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(0,194,212,.32);
}
.sb-btn--primary:hover {
  box-shadow: 0 8px 28px rgba(0,194,212,.42);
  color: var(--sb-white) !important;
  opacity: .94;
}

.sb-btn--outline { background: transparent; color: var(--sb-azul) !important; border-color: var(--sb-azul); }
.sb-btn--outline:hover { background: var(--sb-azul-lt); color: var(--sb-azul) !important; }

/* Variante para usar sobre fondos oscuros (tarjetas del catálogo, hero) */
.sb-btn--outline-light { background: transparent; color: rgba(255,255,255,.85) !important; border-color: rgba(255,255,255,.3); }
.sb-btn--outline-light:hover { border-color: var(--sb-cyan); color: var(--sb-cyan) !important; }

.sb-btn--ghost { background: var(--sb-gc); color: var(--sb-text) !important; border-color: var(--sb-border); }
.sb-btn--ghost:hover { background: var(--sb-gm); color: var(--sb-text) !important; }

.sb-btn--lav { background: var(--sb-lav); color: var(--sb-white) !important; border-color: var(--sb-lav); }
.sb-btn--lav:hover { background: var(--sb-lav-dk); border-color: var(--sb-lav-dk); }

.sb-btn--sm { padding: 8px 16px; font-size: 13px; }
.sb-btn--lg { padding: 14px 28px; font-size: 16px; }

/* ── Alerts ──────────────────────────────────────────── */

.sb-alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  border-left: 4px solid;
  margin: 16px 0;
}

.sb-alert--info    { background: var(--sb-azul-lt); border-color: var(--sb-azul); color: var(--sb-azul); }
.sb-alert--success { background: #d1fae5; border-color: var(--sb-success); color: #065f46; }
.sb-alert--danger  { background: #fee2e2; border-color: var(--sb-danger); color: #991b1b; }

/* ── Progress Bar ────────────────────────────────────── */

.sb-progress-bar {
  width: 100%;
  height: 8px;
  background: var(--sb-gm);
  border-radius: 100px;
  overflow: hidden;
  margin: 8px 0 4px;
}

.sb-progress-bar--lg { height: 12px; }

.sb-progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--sb-azul), var(--sb-lav));
  border-radius: 100px;
  transition: width .5s ease;
}

.sb-progress-bar__label {
  font-size: 12px;
  color: var(--sb-muted);
  text-align: right;
}

/* ── Badge / Pill ─────────────────────────────────────── */

.sb-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  background: rgba(255,255,255,.85);
  color: var(--sb-azul);
  backdrop-filter: blur(4px);
}

.sb-badge--success { background: rgba(16,185,129,.15); color: #065f46; }
.sb-badge--lav     { background: var(--sb-lav-lt); color: var(--sb-lav-dk); }

.sb-pill {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  background: var(--sb-gc);
  color: var(--sb-muted);
  border: 1px solid var(--sb-border);
}

.sb-pill--live { background: #fee2e2; color: #991b1b; border-color: #fca5a5; }

/* ── Empty State ─────────────────────────────────────── */

.sb-empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--sb-muted);
}

.sb-empty-state__icon { font-size: 52px; margin-bottom: 16px; }
.sb-empty-state h3 { font-size: 22px; color: var(--sb-text); margin: 0 0 10px; }
.sb-empty-state p  { margin: 0 0 20px; }

/* ══════════════════════════════════════════════════════
   DASHBOARD
   ══════════════════════════════════════════════════════ */

.sb-dashboard { max-width: 1100px; margin: 0 auto; padding: 32px 20px; }

.sb-dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  background: linear-gradient(135deg, var(--sb-azul) 0%, var(--sb-lav) 100%);
  border-radius: var(--radius);
  padding: 28px 32px;
  color: var(--sb-white);
  margin-bottom: 32px;
}

.sb-dashboard-welcome {
  display: flex;
  align-items: center;
  gap: 18px;
}

.sb-dashboard-welcome h2 {
  margin: 0;
  font-size: 28px;
  color: var(--sb-white);
}

.sb-dashboard-welcome p {
  margin: 4px 0 0;
  opacity: .85;
  font-size: 14px;
}

.sb-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 800;
  color: var(--sb-white);
  border: 2px solid rgba(255,255,255,.4);
  flex-shrink: 0;
}

.sb-avatar--instructor { font-size: 28px; }

.sb-dashboard-quick-stats {
  display: flex;
  gap: 24px;
}

.sb-qs { text-align: center; }
.sb-qs__num { display: block; font-family: var(--font-head); font-size: 36px; font-weight: 800; color: var(--sb-white); }
.sb-qs__label { font-size: 11px; opacity: .8; text-transform: uppercase; letter-spacing: .5px; }

.sb-teacher-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Course grid — auto-fit en vez de un número fijo de columnas: con 5
   columnas fijas, si hay menos de 5 módulos quedaba una columna "fantasma"
   vacía a la derecha (mucho blanco desaprovechado). auto-fit colapsa esas
   columnas vacías y reparte el ancho real entre las tarjetas que sí hay —
   por eso también quedan ~50% más anchas con pocos módulos, y a medida que
   se agregan más se van acomodando solas en más columnas/filas. */
.sb-course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  align-items: start;
  gap: 20px;
}

@media (max-width: 420px) { .sb-course-grid { grid-template-columns: 1fr; } }

.sb-course-card {
  background: var(--sb-oscuro-2);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
  transition: transform .25s ease, border-color .25s ease;
  display: flex;
  flex-direction: column;
}

.sb-course-card:hover { transform: translateY(-6px); border-color: var(--sb-cyan); }

.sb-course-card__link { display: block; text-decoration: none; }

.sb-course-card__thumb {
  height: 150px;
  background: linear-gradient(135deg, var(--sb-cyan) 0%, var(--sb-azul) 100%);
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-start;
  padding: 16px;
}

/* Las tarjetas de Pack usan el mismo degradé lavanda que el resto del sitio;
   los módulos individuales, uno más oscuro — igual que cards-cursos-snippet.html. */
.sb-course-card--pack .sb-course-card__thumb { background: linear-gradient(135deg, var(--sb-lav) 0%, var(--sb-azul) 100%); }
.sb-course-card--module .sb-course-card__thumb { background: linear-gradient(135deg, var(--sb-azul-mid) 0%, var(--sb-oscuro) 100%); }

/* Sin thumbnail: antes había un emoji de libros acá — se sacó porque se
   veía infantil/poco comercial encima del degradé. El número fantasma de
   fondo ya alcanza como identidad visual de la tarjeta. */
.sb-course-card__thumb--placeholder { align-items: center; justify-content: center; }

.sb-course-card__ghost-num {
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 84px;
  line-height: 1;
  color: rgba(255,255,255,.14);
  pointer-events: none;
}

.sb-course-card__body { padding: 20px; flex: 1; display: flex; flex-direction: column; gap: 12px; }

.sb-course-card__title {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 800;
  text-transform: uppercase;
  margin: 0;
  line-height: 1.15;
  color: var(--sb-white);
}

.sb-course-card__title a { color: inherit; text-decoration: none; }
.sb-course-card__title a:hover { color: var(--sb-cyan); }

.sb-course-card__excerpt { font-size: 13px; color: rgba(255,255,255,.6); margin: 0; flex: 1; line-height: 1.6; }

.sb-course-card__meta { display: flex; gap: 6px; align-items: center; font-size: 11.5px; font-weight: 500; color: rgba(255,255,255,.65); }
.sb-course-card__meta span::before { content: '●'; font-size: 6px; color: var(--sb-cyan); margin-right: 6px; }

.sb-course-card__price {
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 800;
  color: var(--sb-white);
  line-height: 1;
}

.sb-course-card__body .sb-progress-bar { background: rgba(255,255,255,.14); }
.sb-course-card__body .sb-progress-bar__fill { background: var(--sb-grad-cta); }
.sb-course-card__body .sb-progress-bar__label { color: rgba(255,255,255,.6); }

/* Quick actions — teacher */
.sb-quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: 32px;
}

.sb-qa-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 18px;
  background: var(--sb-white);
  border: 1px solid var(--sb-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--sb-text);
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow);
  transition: all .18s;
}

.sb-qa-card:hover { border-color: var(--sb-azul); background: var(--sb-azul-lt); color: var(--sb-azul); transform: translateY(-2px); }
.sb-qa-card span:first-child { font-size: 28px; }

/* Teacher course list */
.sb-teacher-course-list { display: flex; flex-direction: column; gap: 12px; }

.sb-teacher-course-row {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--sb-white);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  border: 1px solid var(--sb-border);
  box-shadow: var(--shadow);
}

.sb-tcr__thumb { width: 56px; height: 56px; border-radius: 8px; overflow: hidden; flex-shrink: 0; }
.sb-tcr__thumb img { width: 100%; height: 100%; object-fit: cover; }
.sb-tcr__thumb-placeholder { width: 56px; height: 56px; background: var(--sb-gc); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 24px; }

.sb-tcr__info { flex: 1; }
.sb-tcr__info h3 { margin: 0 0 4px; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.sb-tcr__info h3 a { color: inherit; text-decoration: none; }
.sb-tcr__info h3 a:hover { color: var(--sb-azul); }
.sb-tcr__meta { display: flex; gap: 12px; font-size: 12px; color: var(--sb-muted); }

.sb-tcr__actions { display: flex; gap: 8px; }

.sb-status-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 2px 8px;
  border-radius: 100px;
}

.sb-status-badge--publish { background: #d1fae5; color: #065f46; }
.sb-status-badge--draft   { background: var(--sb-gc); color: var(--sb-muted); }

/* ══════════════════════════════════════════════════════
   COURSE ARCHIVE
   ══════════════════════════════════════════════════════ */

/* Fondo claro — Gime pidió sacar el fondo negro del catálogo ("me gusta
   más, pero no está bien, saquemos el fondo negro"); las tarjetas oscuras
   quedan igual, ahora contrastan sobre blanco. De ancho completo: sin
   max-width, solo padding lateral para que respire. */
.sb-archive { background: var(--sb-white); }
.sb-archive-inner { max-width: none; margin: 0; padding: 56px clamp(16px, 2vw, 40px) 72px; }

.sb-archive-header { margin-bottom: 36px; }
.sb-archive-header h1 { font-family: var(--font-head); font-size: 42px; font-weight: 800; color: var(--sb-azul); margin: 0 0 20px; }

.sb-filter-tabs { display: flex; gap: 10px; flex-wrap: wrap; }

.sb-filter-tab {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  background: var(--sb-gc);
  color: var(--sb-muted);
  text-decoration: none;
  border: 1px solid var(--sb-border);
  transition: all .15s;
}

.sb-filter-tab:hover, .sb-filter-tab.is-active {
  background: var(--sb-grad-cta);
  color: var(--sb-white);
  border-color: transparent;
}

/* Listado de clases dentro de la tarjeta de Módulo — solo título, sin
   numeración ni descripción, en reemplazo del excerpt genérico. */
.sb-course-card__lesson-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.sb-course-card__lesson-list li {
  font-size: 12.5px;
  line-height: 1.4;
  color: rgba(255,255,255,.65);
  padding-left: 14px;
  position: relative;
}

.sb-course-card__lesson-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--sb-cyan);
}

.sb-course-card__lesson-list-more {
  color: rgba(255,255,255,.4) !important;
  font-style: italic;
}
.sb-course-card__lesson-list-more::before { display: none; }

/* ══════════════════════════════════════════════════════
   COURSE SINGLE
   ══════════════════════════════════════════════════════ */

.sb-course-single { max-width: 100%; }

.sb-course-hero {
  position: relative;
  background: linear-gradient(135deg, var(--sb-azul) 0%, var(--sb-lav) 100%);
  background-image: var(--hero-bg);
  background-size: cover;
  background-position: center;
  min-height: 380px;
  display: flex;
  align-items: center;
}

.sb-course-hero__overlay {
  width: 100%;
  background: linear-gradient(90deg, rgba(8,11,135,.88) 40%, rgba(8,11,135,.5) 100%);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.sb-course-hero__content { flex: 1; min-width: 280px; }

.sb-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.7);
  margin-bottom: 12px;
}

.sb-breadcrumb a { color: rgba(255,255,255,.8); text-decoration: none; }
.sb-breadcrumb a:hover { color: var(--sb-white); }

.sb-course-hero__content h1 {
  font-family: var(--font-head);
  font-size: 48px;
  font-weight: 800;
  color: var(--sb-white);
  margin: 0 0 12px;
}

.sb-course-hero__excerpt { color: rgba(255,255,255,.85); font-size: 16px; margin: 0 0 20px; max-width: 600px; }

.sb-course-hero__meta { display: flex; align-items: center; gap: 20px; color: rgba(255,255,255,.7); font-size: 14px; }

.sb-price { font-family: var(--font-head); font-size: 24px; font-weight: 700; color: var(--sb-white); }

.sb-course-hero__cta {
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius);
  padding: 24px;
  min-width: 260px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sb-enrolled-badge {
  font-weight: 700;
  color: var(--sb-white);
  font-size: 15px;
}

.sb-course-body { max-width: 1100px; margin: 0 auto; padding: 40px 24px; display: grid; grid-template-columns: 1fr; gap: 40px; }

/* Curriculum */
.sb-curriculum-list { border: 1px solid var(--sb-border); border-radius: var(--radius); overflow: hidden; }

.sb-curriculum-part { margin-bottom: 24px; }
.sb-curriculum-part:last-child { margin-bottom: 0; }

.sb-curriculum-part__title {
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .4px;
  color: var(--sb-azul);
  margin: 0 0 10px;
}

.sb-lesson-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--sb-border);
  transition: background .12s;
}

.sb-lesson-row:last-child { border-bottom: none; }
.sb-lesson-row:hover { background: var(--sb-gc); }
.sb-lesson-row.is-complete { background: #f0fdf4; }

.sb-lesson-row__num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--sb-gc);
  color: var(--sb-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.sb-lesson-row.is-complete .sb-lesson-row__num { background: var(--sb-success); color: var(--sb-white); }

.sb-lesson-row__info { flex: 1; }

.sb-lesson-row__title { font-weight: 600; font-size: 14px; text-decoration: none; color: var(--sb-text); display: block; margin-bottom: 4px; }
.sb-lesson-row__title:hover { color: var(--sb-azul); }

.sb-lesson-row__badges { display: flex; gap: 6px; flex-wrap: wrap; }

.sb-lesson-row__status { flex-shrink: 0; }
.sb-check { color: var(--sb-success); font-weight: 800; font-size: 16px; }
.sb-lock  { color: var(--sb-muted); font-size: 16px; }

/* ══════════════════════════════════════════════════════
   LESSON SINGLE
   ══════════════════════════════════════════════════════ */

/* La clase de reproducción arma su propio <body> (sin header/footer del tema,
   ver lesson-single.php) para que no aparezca el menú del sitio. */
body.sb-lesson-fullscreen {
  margin: 0;
  background: var(--sb-white);
  color: var(--sb-text);
}

.sb-access-denied--fullscreen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sb-lesson-layout {
  display: flex;
  min-height: 100vh;
  font-family: var(--font-body);
}

/* Sidebar */
.sb-sidebar {
  width: 300px;
  flex-shrink: 0;
  background: var(--sb-white);
  border-right: 1px solid var(--sb-border);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  box-shadow: 2px 0 12px rgba(0,0,0,.05);
}

.sb-sidebar__close { display: none; }

.sb-sidebar-course {
  padding: 20px;
  border-bottom: 1px solid var(--sb-border);
  background: linear-gradient(135deg, var(--sb-azul) 0%, var(--sb-lav) 100%);
}

.sb-sidebar-course__link {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,.85);
  text-decoration: none;
  display: block;
  margin-bottom: 10px;
}

.sb-sidebar-course__link:hover { color: var(--sb-white); }

.sb-sidebar-course .sb-progress-bar { background: rgba(255,255,255,.3); }
.sb-sidebar-course .sb-progress-bar__label { color: rgba(255,255,255,.75); text-align: left; }

.sb-sidebar-lessons { padding: 8px 0; flex: 1; }

.sb-sidebar-part__title {
  padding: 14px 20px 6px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .4px;
  color: var(--sb-muted);
}

.sb-sidebar-lesson {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 18px;
  text-decoration: none;
  color: var(--sb-text);
  font-size: 13px;
  border-left: 3px solid transparent;
  transition: all .15s;
}

.sb-sidebar-lesson:hover { background: var(--sb-gc); color: var(--sb-azul); border-left-color: var(--sb-azul); }
.sb-sidebar-lesson.is-current { background: var(--sb-azul-lt); border-left-color: var(--sb-azul); font-weight: 600; color: var(--sb-azul); }
.sb-sidebar-lesson.is-done .sb-sidebar-lesson__num { background: var(--sb-success); color: var(--sb-white); }

.sb-sidebar-lesson__num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--sb-gc);
  border: 1px solid var(--sb-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--sb-muted);
}

.sb-sidebar-lesson__title { line-height: 1.3; }

/* Main lesson content */
.sb-lesson-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.sb-lesson-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  background: var(--sb-white);
  border-bottom: 1px solid var(--sb-border);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0,0,0,.04);
}

.sb-sidebar-toggle {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--sb-border);
  border-radius: 8px;
  background: var(--sb-gc);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.sb-breadcrumb-back { font-size: 13px; color: var(--sb-muted); text-decoration: none; flex: 1; }
.sb-breadcrumb-back:hover { color: var(--sb-azul); }

.sb-lesson-nav { display: flex; gap: 8px; margin-left: auto; }

.sb-nav-btn {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  background: var(--sb-gc);
  color: var(--sb-text);
  border: 1px solid var(--sb-border);
  transition: all .15s;
}

.sb-nav-btn:hover { background: var(--sb-azul); color: var(--sb-white); border-color: var(--sb-azul); }

.sb-lesson-content {
  flex: 1;
  /* Sin max-width: el video y el contenido ocupan todo el ancho disponible
     del panel principal, sin el margen blanco que quedaba con un ancho fijo. */
  max-width: none;
  margin: 0;
  padding: 28px 32px 60px;
  width: 100%;
}

.sb-lesson-content h1 {
  font-family: var(--font-head);
  font-size: 38px;
  font-weight: 800;
  color: var(--sb-azul);
  margin: 0 0 24px;
}

/* Video */
.sb-video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  margin-bottom: 32px;
  box-shadow: var(--shadow-md);
  background: #000;
}

.sb-video-wrapper iframe,
.sb-video-wrapper video {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}

/* Miniatura propia (sin overlay de "Compartir" / "Ver en YouTube") */
.sb-video-facade {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: #000;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  padding: 0;
}

.sb-video-facade--vimeo {
  background: linear-gradient(135deg, var(--sb-azul, #1c2b6b), #0f1a45);
}

.sb-video-facade__play {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.92);
  color: var(--sb-azul, #1c2b6b);
  font-size: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease;
  box-shadow: 0 4px 18px rgba(0, 0, 0, .35);
}

.sb-video-facade__play:hover {
  transform: scale(1.08);
  background: #fff;
}

/* Presentaciones (PPTX/PDF vía visor de Google Docs) */
.sb-pptx-viewer-wrapper {
  position: relative;
  padding-bottom: 129%; /* proporción vertical del visor en mobile */
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  margin-bottom: 32px;
  box-shadow: var(--shadow-md);
  background: #f3f4fb;
}

.sb-pptx-viewer-wrapper iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}

@media (min-width: 768px) {
  .sb-pptx-viewer-wrapper { padding-bottom: 75%; }
}

.sb-lesson-text { font-size: 16px; line-height: 1.75; color: var(--sb-text); margin-bottom: 40px; }
.sb-lesson-text p { margin-bottom: 1.2em; }

.sb-lesson-footer {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 24px 0 0;
  border-top: 2px solid var(--sb-gm);
  margin-top: 40px;
  flex-wrap: wrap;
}

.sb-completed-msg {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: #d1fae5;
  color: #065f46;
  border-radius: 8px;
  font-weight: 700;
  font-size: 15px;
}

.sb-access-denied { max-width: 600px; margin: 60px auto; padding: 20px; }

/* ══════════════════════════════════════════════════════
   ZOOM BLOCK
   ══════════════════════════════════════════════════════ */

.sb-zoom-block {
  border-radius: var(--radius);
  border: 2px solid var(--sb-border);
  padding: 20px 24px;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sb-zoom-block.is-live {
  border-color: #ef4444;
  background: #fff5f5;
}

.sb-zoom-block.is-upcoming {
  border-color: var(--sb-azul);
  background: var(--sb-azul-lt);
}

.sb-zoom-block.is-past {
  border-color: var(--sb-border);
  background: var(--sb-gc);
  opacity: .85;
}

.sb-zoom-block__header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.sb-zoom-block__icon { font-size: 28px; }

.sb-zoom-block__title { font-family: var(--font-head); font-size: 18px; font-weight: 700; margin: 0 0 2px; }

.sb-zoom-block__date { margin: 0; font-size: 13px; color: var(--sb-muted); }

.sb-zoom-block__live-badge {
  margin-left: auto;
  background: #ef4444;
  color: white;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1px;
  animation: sb-pulse 1.5s infinite;
}

@keyframes sb-pulse { 0%,100% { opacity:1; } 50% { opacity:.6; } }

.sb-zoom-block__details {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--sb-muted);
}

.sb-zoom-block__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  background: var(--sb-azul);
  color: var(--sb-white) !important;
  align-self: flex-start;
  transition: background .15s;
}

.sb-zoom-block__btn.is-active { background: #ef4444; }
.sb-zoom-block__btn:hover { opacity: .88; }

.sb-zoom-block__past-msg { font-size: 13px; color: var(--sb-muted); margin: 0; }

/* ══════════════════════════════════════════════════════
   QUIZ
   ══════════════════════════════════════════════════════ */

.sb-quiz-block {
  background: var(--sb-white);
  border: 2px solid var(--sb-gm);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin: 36px 0;
}

.sb-quiz-header { margin-bottom: 24px; border-bottom: 2px solid var(--sb-gc); padding-bottom: 16px; }
.sb-quiz-header h3 { font-family: var(--font-head); font-size: 22px; font-weight: 700; margin: 0 0 6px; }
.sb-quiz-header__sub { margin: 0; font-size: 13px; color: var(--sb-muted); }

.sb-question { margin-bottom: 28px; }

.sb-question__text {
  font-weight: 600;
  font-size: 15px;
  margin: 0 0 12px;
  line-height: 1.5;
}

.sb-question__options { display: flex; flex-direction: column; gap: 8px; }

.sb-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 2px solid var(--sb-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  transition: all .15s;
}

.sb-option:hover { border-color: var(--sb-lav); background: var(--sb-lav-lt); }

.sb-option input[type="radio"] { width: 16px; height: 16px; accent-color: var(--sb-azul); flex-shrink: 0; }

.sb-option.is-correct { border-color: var(--sb-success); background: #d1fae5; }
.sb-option.is-wrong   { border-color: var(--sb-danger);  background: #fee2e2; }
.sb-option.is-missed  { border-color: var(--sb-success); background: #d1fae5; opacity: .7; }

/* Quiz result */
.sb-quiz-result { padding: 24px; border-radius: var(--radius-sm); margin-top: 20px; }
.sb-quiz-result--pass { background: #d1fae5; border: 2px solid var(--sb-success); }
.sb-quiz-result--fail { background: #fee2e2; border: 2px solid var(--sb-danger); }

.sb-quiz-result__score {
  font-family: var(--font-head);
  font-size: 52px;
  font-weight: 800;
  margin-bottom: 4px;
}

.sb-quiz-result--pass .sb-quiz-result__score { color: #065f46; }
.sb-quiz-result--fail .sb-quiz-result__score { color: #991b1b; }

.sb-quiz-result__msg { font-size: 16px; font-weight: 600; margin-bottom: 16px; }

.sb-quiz-passed {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: #d1fae5;
  border-radius: var(--radius-sm);
  border: 2px solid var(--sb-success);
}

.sb-quiz-passed__icon { font-size: 32px; }
.sb-quiz-passed strong { color: #065f46; font-size: 16px; display: block; }
.sb-quiz-passed p { margin: 4px 0 0; color: #065f46; font-size: 13px; }

.sb-quiz-prev { margin-top: 12px; font-size: 13px; color: var(--sb-muted); }

.sb-question-feedback {
  margin-top: 8px;
  padding: 10px 14px;
  background: var(--sb-gc);
  border-radius: 6px;
  font-size: 13px;
  color: var(--sb-muted);
  border-left: 3px solid var(--sb-lav);
}

/* ══════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════ */

@media (max-width: 900px) {
  .sb-sidebar { display: none; }
  .sb-sidebar.is-open {
    display: flex;
    position: fixed;
    top: 0; left: 0;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    z-index: 1000;
    box-shadow: 4px 0 24px rgba(0,0,0,.2);
  }
  .sb-sidebar__close { display: flex; align-items: center; justify-content: center; width: 100%; padding: 12px; background: var(--sb-gc); border: none; font-size: 16px; cursor: pointer; flex-shrink: 0; }
  .sb-sidebar-toggle { display: flex; }
  .sb-lesson-content { padding: 24px 16px 40px; }
  .sb-lesson-content h1 { font-size: 28px; }
  .sb-course-hero__overlay { padding: 24px; flex-direction: column; }
  .sb-course-hero__content h1 { font-size: 34px; }
  .sb-course-hero__cta { width: 100%; }
  .sb-dashboard-header { flex-direction: column; align-items: flex-start; }
  .sb-dashboard-quick-stats { flex-wrap: wrap; gap: 16px; }
  .sb-quiz-block { padding: 20px; }
}

@media (max-width: 600px) {
  .sb-archive-header h1 { font-size: 32px; }
  .sb-lesson-topbar { flex-wrap: wrap; gap: 8px; }
  /* "Volver a mi cuenta" es la única salida de esta pantalla — se mantiene
     visible incluso en mobile, a diferencia del breadcrumb viejo que se ocultaba acá. */
  .sb-breadcrumb-back { flex-basis: 100%; order: 3; }
  .sb-teacher-actions { flex-direction: column; }
}

/* ── Pack: precio + lista de espera ────────────────────── */

.sb-pack-price {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.sb-pack-price__amount {
  font-family: var(--font-head);
  font-size: 36px;
  font-weight: 800;
  color: var(--sb-white);
  line-height: 1;
}

.sb-pack-price__installments,
.sb-pack-price__usd {
  font-size: 13px;
  color: rgba(255,255,255,.8);
}

.sb-pack-price__soon {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.15);
  color: var(--sb-white);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.sb-waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 260px;
}

.sb-waitlist-form .sb-input {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: none;
  font-family: var(--font-body);
  font-size: 14px;
}

.sb-waitlist-msg {
  font-size: 13px;
  margin: 0;
  color: rgba(255,255,255,.85);
}

.sb-waitlist-msg.is-error { color: #fecaca; }
.sb-waitlist-msg.is-success { color: #bbf7d0; font-weight: 600; }