/* Estilo ultra suave y minimalista */
:root {
  --tverde: #176B3B;
  --fondo: #FFFCF5; /* Gris-amarillo ultra suave (casi blanco) */
  --borde: #EAE5DC;
  --hover: #F0F0F0; /* Gris casi imperceptible para hover */
}

.toc-btn {
  background: var(--fondo);
  border: 1px solid var(--borde);
  padding: 8px 15px;
  cursor: pointer;
  margin: 1em 0;
  font-size: 0.9em;
  color: #666;
  display: inline-flex;
  align-items: center;
  transition: all 0.3s ease;
  border-radius: 4px;
  position: relative;
}

.toc-btn:hover {
  background: var(--hover);
  border-color: #D5D5D5;
  /* Eliminamos el bold y color verde en hover */
}

/* Triángulo relleno sutil */
.toc-btn::after {
  content: "";
  margin-left: 10px;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid #999; /* Gris en lugar de verde */
  transition: all 0.3s ease;
}

.toc-btn.collapsed::after {
  border-top: none;
  border-bottom: 6px solid #999;
}

#toc-container {
  display: none;
  background: var(--fondo);
  padding: 1.2em;
  margin: 0.5em 0 1.5em;
  border: 1px solid var(--borde);
  border-radius: 4px;
}

#toc-container.visible {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Lista de contenidos ultra discreta */
#toc-container ul {
  list-style: none;
  padding-left: 0.8em;
  margin: 0;
}

#toc-container li {
  padding: 5px 0;
  position: relative;
}

#toc-container li::before {
  content: "•";
  color: #CCC; /* Viñetas grises */
  position: absolute;
  left: -0.8em;
  font-size: 0.9em;
}

#toc-container a {
  text-decoration: none;
  color: #666;
  font-size: 0.88em;
  transition: color 0.3s ease;
}

#toc-container a:hover {
  color: #444; /* Solo un gris ligeramente más oscuro */
}