/* Contenedor general del contenido del curso */
.curso-seccion {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1rem;
  text-align: center;
  font-size: 1.1rem;
  color: #222; /* color base legible */
  font-family: Arial, sans-serif;
}

.curso-seccion p {
  text-align: justify;
  line-height: 1.75;
  font-size: 1.1rem;
  margin-bottom: 1.2rem;
  color: #444;
}

.curso-seccion h1 {
  font-size: clamp(2rem, 3vw, 2.4rem);
  margin-bottom: 1rem;
  color: #007acc;
  font-weight: 700;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.curso-seccion h2 {
  font-size: clamp(1.6rem, 2vw, 2rem);
  color: #007acc;
  margin-bottom: 1rem;
  font-weight: 600;
}

.curso-seccion h3 {
  font-size: clamp(1.3rem, 1.5vw, 1.5rem);
  color: #007acc;
  margin-bottom: 1rem;
  font-weight: 600;
}

/* Contenedor de todas las tarjetas */
.cursos-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
  padding: 0;
}

/* Tarjetas individuales */
.curso-tarjeta {
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 1.8rem 1.5rem;
  flex: 1 1 350px;
  max-width: 420px;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-sizing: border-box;
  text-align: center;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  cursor: default;
}

.curso-tarjeta:hover,
.curso-tarjeta:focus-within {
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  transform: translateY(-4px);
  outline: none;
}

/* Imagen dentro de la tarjeta */
.curso-tarjeta img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  margin: 1rem auto;
  border-radius: 8px;
  background-color: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
  transition: transform 0.3s ease;
}

.curso-tarjeta img:hover,
.curso-tarjeta img:focus {
  transform: scale(1.05);
  cursor: pointer;
  outline: none;
}

/* Botón centrado al final */
.boton-container {
  margin-top: auto;
  text-align: center;
}

.boton {
  background-color: #007acc;
  color: #fff;
  padding: 0.65rem 1.5rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  box-shadow: 0 2px 6px rgba(0, 122, 204, 0.4);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  display: inline-block;
}

.boton:hover,
.boton:focus-visible {
  background-color: #005f99;
  box-shadow: 0 4px 12px rgba(0, 95, 153, 0.7);
  outline: none;
  cursor: pointer;
}

/* Adaptación para móviles */
@media screen and (max-width: 600px) {
  .cursos-container {
    flex-direction: column;
    align-items: center;
    gap: 1.6rem;
  }

  .curso-tarjeta {
    max-width: 90%;
    min-height: auto;
    padding: 1.3rem 1rem;
  }

  .curso-seccion h1 {
    font-size: 1.8rem;
  }

  .curso-seccion h2 {
    font-size: 1.5rem;
  }

  .curso-seccion h3 {
    font-size: 1.25rem;
  }

  .curso-seccion p {
    font-size: 1rem;
  }
}