/* ======= Estilos generales ======= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #0d0d1a;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  font-family: "Trebuchet MS", Verdana, sans-serif;
  overflow: hidden;
}

#contenedor {
  position: relative;
  /* El canvas manda el tamaño */
}

canvas {
  display: block;
  max-width: 100vw;
  max-height: 100vh;
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(80, 160, 255, 0.35);
  touch-action: none; /* para que el dedo no haga scroll */
}

/* ======= Pantallas (inicio y fin) ======= */
.pantalla {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 20, 0.88);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 18px;
  border-radius: 12px;
  color: #fff;
  padding: 24px;
}

.pantalla.oculta {
  display: none;
}

.pantalla h1 {
  font-size: 44px;
  letter-spacing: 4px;
  color: #ffd94d;
  text-shadow: 0 0 18px rgba(255, 217, 77, 0.6);
}

.pantalla h2 {
  font-size: 22px;
  color: #7fd4ff;
}

.pantalla p {
  font-size: 16px;
  line-height: 1.5;
  color: #cfd8ea;
}

.azul { color: #4da6ff; font-weight: bold; }
.roja { color: #ff5c5c; font-weight: bold; }

.estrellas-grandes {
  font-size: 40px !important;
  letter-spacing: 6px;
  text-shadow: 0 0 16px rgba(255, 217, 77, 0.7);
}

/* ======= Selector de niveles ======= */
#selector-niveles {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.nivel-boton {
  width: 52px;
  height: 52px;
  padding: 0;
  font-size: 22px;
  border-radius: 50%;
  color: #10233a;
  background: linear-gradient(180deg, #ffd94d, #e0a90f);
  box-shadow: 0 4px 0 #a67c08;
}

.nivel-boton:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 #a67c08;
}

.nivel-boton.bloqueado {
  background: linear-gradient(180deg, #4a5568, #2d3748);
  box-shadow: 0 4px 0 #1a202c;
  cursor: not-allowed;
  font-size: 18px;
}

button {
  font-size: 24px;
  font-weight: bold;
  padding: 14px 44px;
  border: none;
  border-radius: 40px;
  cursor: pointer;
  color: #10233a;
  background: linear-gradient(180deg, #7fe37f, #33b333);
  box-shadow: 0 6px 0 #1d7a1d;
  transition: transform 0.1s;
}

button:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 #1d7a1d;
}

/* Botón secundario, más pequeño (como el de probar sonido) */
button.secundario {
  font-size: 16px;
  padding: 10px 24px;
  color: #eaf2ff;
  background: linear-gradient(180deg, #3a4a66, #26334a);
  box-shadow: 0 4px 0 #16202f;
}

button.secundario:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 #16202f;
}