/* ============================================================
   Paleta y tipografía — inspirado en Coursera (azul + blanco)
   ============================================================ */
:root {
  --color-primary: #0056d2;
  --color-primary-dark: #00419e;
  --color-primary-soft: #e6f0ff;
  --color-text: #1f1f1f;
  --color-text-muted: #5b6670;
  --color-bg-soft: #f7f9fc;
  --color-border: #e3e8ee;
  --color-accent: #f2a900;
  --color-navbar-bg: #00224d;
}

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--color-text);
  background-color: #fff;
}

/* ---------- Navbar ---------- */
.navbar-aula {
  background: var(--color-navbar-bg);
  border-bottom: none;
}
.navbar-aula .navbar-brand {
  color: #fff !important;
  font-weight: 800;
  line-height: 1.1;
}
.navbar-aula .navbar-brand small {
  display: block;
  color: #9fc1f5;
  font-weight: 500;
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.navbar-aula .nav-link {
  color: rgba(255, 255, 255, 0.85) !important;
  font-weight: 500;
}
.navbar-aula .nav-link:hover {
  color: #fff !important;
}
.navbar-aula .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.35);
}
.navbar-aula .navbar-toggler-icon {
  filter: invert(1) grayscale(100%) brightness(200%);
}

/* ---------- Botones estilo "pill" ---------- */
.btn-aula-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
}
.btn-aula-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}
.btn-aula-outline {
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: 999px;
  font-weight: 600;
  background: transparent;
  padding: 0.5rem 1.25rem;
}
.btn-aula-outline:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}
.btn-aula-navbar {
  background: #fff;
  color: var(--color-navbar-bg);
  border-radius: 999px;
  font-weight: 700;
  padding: 0.45rem 1.1rem;
}
.btn-aula-navbar:hover {
  background: var(--color-primary-soft);
  color: var(--color-navbar-bg);
}

/* ---------- Carrusel del hero ---------- */
.hero-carousel .carousel-item {
  border-radius: 16px;
  overflow: hidden;
  min-height: 280px;
}
.hero-carousel .slide-blue,
.hero-carousel .slide-navy,
.hero-carousel .slide-gold {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  min-height: 280px;
  padding: 2.5rem 3rem;
}
.hero-carousel .slide-blue {
  background: linear-gradient(135deg, #0056d2, #00337a);
  color: #fff;
}
.hero-carousel .slide-navy {
  background: linear-gradient(135deg, #131b2e, #0056d2);
  color: #fff;
}
.hero-carousel .slide-gold {
  background: linear-gradient(135deg, #f2a900, #c97e00);
  color: #1f1f1f;
}
.hero-carousel h2 {
  font-weight: 800;
  font-size: 1.9rem;
  max-width: 32rem;
}
.hero-carousel p {
  max-width: 30rem;
  opacity: 0.92;
}
.carousel-slim-arrows .carousel-control-prev,
.carousel-slim-arrows .carousel-control-next {
  width: 3.5rem;
}
.carousel-slim-arrows .carousel-control-prev-icon,
.carousel-slim-arrows .carousel-control-next-icon {
  background-color: rgba(0, 0, 0, 0.35);
  border-radius: 50%;
  padding: 1.3rem;
  background-size: 50% 50%;
}
.hero-carousel .carousel-indicators [data-bs-target] {
  background-color: var(--color-text-muted);
}

/* ---------- Secciones de cursos por categoría ---------- */
.category-section {
  margin-bottom: 2.5rem;
}
.category-section__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1rem;
}
.category-section__title {
  font-weight: 700;
  font-size: 1.25rem;
}
.category-section__link {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.9rem;
}
.category-section__link:hover {
  text-decoration: underline;
}

/* ---------- Tarjeta de curso ---------- */
.course-card {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  height: 100%;
  text-decoration: none;
  color: var(--color-text);
  display: block;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.course-card:hover {
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
  color: var(--color-text);
}
.course-card__thumb {
  height: 110px;
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
}
.course-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.course-card__body {
  padding: 0.9rem 1rem;
}
.course-card__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.45rem;
}
.course-card__title {
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.3;
  margin-bottom: 0.3rem;
}
.course-card__meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.course-card__price {
  font-weight: 700;
  margin-top: 0.4rem;
}

/* ---------- Bloques "Más populares / por categoría" (estilo Coursera) ---------- */
.popular-block {
  background: var(--color-primary-soft);
  border-radius: 16px;
  padding: 1.25rem 1.25rem 0.5rem;
  height: 100%;
}
.popular-block__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
}
.popular-block__header a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 700;
}
.popular-item {
  display: flex;
  align-items: stretch;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 0.75rem;
  text-decoration: none;
  color: var(--color-text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.popular-item:last-child {
  margin-bottom: 0;
}
.popular-item:hover {
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
  color: var(--color-text);
}
.popular-item__thumb {
  width: 90px;
  min-height: 84px;
  flex-shrink: 0;
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}
.popular-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.popular-item__body {
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.popular-item__title {
  font-weight: 700;
  font-size: 0.85rem;
  line-height: 1.25;
}
.popular-item__meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}
.popular-block__more {
  display: block;
  text-align: center;
  margin-top: 0.5rem;
  padding: 0.75rem 0;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}
.popular-block__more:hover {
  text-decoration: underline;
}

/* ---------- Banner de clase en vivo ---------- */
.live-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #e0234e;
  vertical-align: middle;
}
.live-banner {
  display: block;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  height: 100%;
  text-decoration: none;
  color: var(--color-text);
}
.live-banner:hover {
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  color: var(--color-text);
}
.live-banner__thumb {
  position: relative;
  height: 140px;
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.6rem;
}
.live-banner__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.live-banner__badge {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  background: #e0234e;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.55rem;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  letter-spacing: 0.03em;
}
.live-banner__badge .live-dot {
  background: #fff;
}
.live-banner__body {
  padding: 1.1rem 1.25rem;
}
.live-banner__body h4 {
  font-weight: 800;
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}
.live-banner__fecha {
  font-weight: 600;
  color: var(--color-primary);
  margin: 0.4rem 0 0;
  font-size: 0.85rem;
}

/* ---------- Footer (pie de página, en todas las páginas) ---------- */
.footer-aula {
  background: var(--color-navbar-bg);
  color: rgba(255, 255, 255, 0.85);
}
.footer-aula h5,
.footer-aula h6 {
  color: #fff;
}
.footer-aula__brand {
  font-weight: 800;
}
.footer-aula__links {
  margin: 0;
}
.footer-aula__links li {
  margin-bottom: 0.4rem;
}
.footer-aula__links a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 0.9rem;
}
.footer-aula__links a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ---------- Tarjeta de "Mis cursos" (imagen grande + insignia) ---------- */
.my-course-card {
  display: block;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  height: 100%;
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.my-course-card:hover {
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
  color: var(--color-text);
}
.my-course-card__thumb {
  position: relative;
  height: 160px;
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8rem;
}
.my-course-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.my-course-card__badge {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: #fff;
  color: var(--color-text);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}
.my-course-card__body {
  padding: 0.9rem 1rem;
}
.my-course-card__provider {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}
.my-course-card__provider-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}
.my-course-card__title {
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.3;
  margin-bottom: 0.3rem;
}
.my-course-card__link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.8rem;
  margin: 0.2rem 0;
}
.my-course-card__meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.3rem;
}
/* ---------- Página de detalle de un curso EN VIVO ---------- */
.live-hero {
  position: relative;
  min-height: 320px;
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  background-color: var(--color-navbar-bg);
  background-size: cover;
  background-position: center;
}
.live-hero__overlay {
  width: 100%;
  padding: 2rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.78), rgba(0, 0, 0, 0.05));
  color: #fff;
}
.live-hero__overlay h1 {
  font-weight: 800;
  font-size: 1.9rem;
  margin: 0.5rem 0 0.25rem;
}
.live-hero__overlay p {
  margin: 0;
  opacity: 0.9;
}
.live-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #fff;
  color: var(--color-text);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
}

.live-facts {
  display: flex;
  flex-wrap: wrap;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-top: -1.25rem;
  position: relative;
  z-index: 2;
  margin-left: 0.75rem;
  margin-right: 0.75rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
}
.live-facts__item {
  flex: 1 1 180px;
  padding: 1rem 1.25rem;
  border-right: 1px solid var(--color-border);
}
.live-facts__item:last-child {
  border-right: none;
}
.live-facts__item strong {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.2rem;
}
.live-facts__item span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.session-row {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}
.session-row:last-child {
  border-bottom: none;
}
.session-row__date {
  width: 84px;
  flex-shrink: 0;
  text-align: center;
}
.session-row__date strong {
  display: block;
  font-size: 0.9rem;
}
.session-row__date span {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}
.session-row__body h6 {
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.session-row__links a {
  margin-right: 1rem;
  font-size: 0.85rem;
  color: var(--color-primary);
  text-decoration: none;
}
.session-row__links a:hover {
  text-decoration: underline;
}

.next-session-card {
  background: var(--color-primary-soft);
  border-radius: 12px;
  padding: 1.25rem;
}
.next-session-card h6 {
  font-weight: 700;
  margin-bottom: 0.6rem;
}
.next-session-card__date {
  font-weight: 700;
  margin-bottom: 0.1rem;
}
.next-session-card__time {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}
.next-session-card__topic {
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}
/* ---------- Página de detalle de curso GRABADO (estilo Udemy) ---------- */
.purchase-card {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}
.purchase-card__image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}
.purchase-card__image--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-soft);
  font-size: 3rem;
}
.purchase-card__body {
  padding: 1.25rem;
}
.purchase-option--subscription {
  background: var(--color-primary-soft);
  border-radius: 10px;
  padding: 0.9rem 1rem;
}

.curso-incluye li {
  padding: 0.35rem 0;
}

.accordion-button:not(.collapsed) {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
}
.accordion-button:focus {
  box-shadow: none;
  border-color: var(--color-border);
}
.course-hero {
  background: var(--color-navbar-bg);
  border-radius: 16px;
  margin-bottom: 1.5rem;
  overflow: hidden;
}
.course-hero__text-col {
  padding: 2.25rem 1.5rem 2.25rem 2.5rem;
}
.course-hero__card-col {
  padding: 1.5rem 1.5rem 1.5rem 0.5rem;
}
.course-hero__title {
  color: #fff;
  font-weight: 800;
  font-size: 1.8rem;
  max-width: 720px;
  margin-bottom: 0.5rem;
}
.course-hero__subtitle {
  color: #fff;
  font-size: 1.05rem;
  opacity: 0.92;
  max-width: 720px;
  margin-bottom: 0.85rem;
}
.course-hero__meta {
  color: #fff;
  font-size: 0.85rem;
  opacity: 0.75;
  margin-bottom: 0.25rem;
}
.course-hero__meta strong {
  opacity: 1;
}

.course-section-title {
  font-weight: 700;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 1rem;
}

.curso-incluye .col-md-6 {
  padding: 0.55rem 0;
  font-size: 0.95rem;
}