@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;500;700&display=swap');

:root {
  --bg: radial-gradient(circle at 50% 20%, #080c1c, #02040a 70%);
  --accent: #c3d9ff;
  --ring: rgba(200,220,255,0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  background: var(--bg);
  color: white;
  overflow: hidden;
  height: 100vh;
}

.universe {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

/* Planeta */
.planet {
  position: relative;
  width: 200px;
  height: 200px;
  background: linear-gradient(145deg, #3b5b90, #0a1328);
  border-radius: 50%;
  box-shadow: 0 0 60px rgba(150,180,255,0.4), inset -15px -20px 30px rgba(0,0,0,0.6);
  animation: float 6s ease-in-out infinite;
  cursor: pointer;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

/* Anillos */
.rings {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300px;
  height: 120px;
  transform: translate(-50%, -50%) rotate(25deg);
  border: 6px solid var(--ring);
  border-radius: 50%;
  box-shadow: 0 0 30px rgba(150,200,255,0.3);
}

/* Frases flotantes */
.phrases {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.phrase {
  position: absolute;
  padding: 10px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 999px;
  font-size: 14px;
  color: var(--accent);
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.8s ease;
}

.phrase.show {
  opacity: 1;
  transform: scale(1);
}

/* Controles */
.controls {
  position: absolute;
  bottom: 30px;
  display: flex;
  gap: 10px;
  align-items: center;
}

button {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: #c8d5ff;
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
}

button:hover {
  background: rgba(255,255,255,0.15);
}

input[type=range] {
  accent-color: #90b8ff;
}

/* ✨ Capa de estrellas reales y brillantes sobre el fondo existente */
.universe::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 10% 20%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 30% 70%, rgba(220,235,255,1) 0px, transparent 3px),
    radial-gradient(circle at 80% 40%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 50% 10%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 90% 80%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 70% 90%, rgba(240,240,255,1) 0px, transparent 3px),
    radial-gradient(circle at 15% 90%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 60% 50%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 45% 30%, rgba(200,220,255,1) 0px, transparent 3px),
    radial-gradient(circle at 25% 40%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 40% 60%, rgba(230,240,255,1) 0px, transparent 3px),
    radial-gradient(circle at 75% 20%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 95% 60%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 10% 10%, rgba(220,230,255,1) 0px, transparent 3px),
    radial-gradient(circle at 30% 30%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 60% 80%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 85% 50%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 70% 30%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 15% 50%, rgba(255,255,255,1) 0px, transparent 3px),
    radial-gradient(circle at 5% 80%, rgba(255,255,255,1) 0px, transparent 3px);
  background-repeat: repeat;
  background-size: 600px 600px;
  filter: drop-shadow(0 0 6px #fff) brightness(1.3);
  opacity: 0.9;
  animation: brillarEstrellas 2s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: -2;
}

/* ✨ Parpadeo brillante */
@keyframes brillarEstrellas {
  0% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
  100% { opacity: 0.8; transform: scale(1); }
}