body {
  font-family: Arial, sans-serif;
  background-color: white;
  color: black;
  font-size: 16px;
  margin: 0;
  transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
  background-color: #1e1e1e;
  color: #f5f5f5; 
}


.container {
  max-width: 900px;
  margin: 40px auto 0 auto; 
  padding: 40px 24px;
  text-align: center;
}

h1, p {
  color: inherit;
}


img {
  max-width: 280px;
  display: block;
  margin: 16px auto;
}


.controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin: 24px 0;
}


button {
  padding: 12px 24px;
  font-size: 1em;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background-color: #007BFF;
  color: #ffffff;
  transition: background-color 0.3s;
}


button:focus, button:focus-visible {
  outline: 3px solid #ff9900;
  outline-offset: 2px;
}


.mode-btn {
  width: 50px;
  height: 50px;
  padding: 0;
  border-radius: 50%;
  font-size: 24px;
  background-color: #0a0a07;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

body.dark-mode .mode-btn {
  background-color: #4a4a4a;
}

/* Hover general del toggle */
.mode-btn:hover {
  background-color: #007BFF; /* gris medio en modo claro */
  transform: scale(1.1);
}

/* Hover del toggle en dark mode */
body.dark-mode .mode-btn:hover {
  background-color: #888; /* gris claro sobre fondo oscuro */
  transform: scale(1.1);
}



.top-toggle {
  position: fixed;
  top: 10px;
  right: 80px;
  z-index: 1000;
}



.tooltip-btn {
  position: relative; 
  padding: 12px 24px;
  font-size: 1em;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background-color: #007BFF;
  color: #ffffff;
  transition: background-color 0.3s;
}

.tooltip-btn:hover {
  background-color: #0056b3;
}


.tooltip-text {
  visibility: hidden;
  width: max-content;
  max-width: 200px;
  background-color: #333;
  color: #fff;
  text-align: center;
  padding: 6px 10px;
  border-radius: 4px;
  position: absolute;
  z-index: 10;
  bottom: 125%; 
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s;
  font-size: 0.9em;
  pointer-events: none;
}


.tooltip-text::after {
  content: "";
  position: absolute;
  top: 100%; 
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: #333 transparent transparent transparent;
}


.tooltip-btn:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}