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

body {
  font-family: 'Segoe UI', sans-serif;
  background: #0b0c1e;
  color: #ffffff;
}

header {
  background-color: #1a1c3f;
  padding: 1rem;
  text-align: center;
  border-bottom: 2px solid #444;
}

header h1 {
  font-size: 2.5rem;
  font-family: 'Orbitron', sans-serif;
  color: #00bfff;
  text-shadow:
    0 0 5px #00bfff,
    0 0 10px #00bfff,
    0 0 20px #0099ff,
    0 0 30px #0077ff;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

nav a {
  text-decoration: none;
  color: #b9c0ff;
  font-weight: bold;
}

nav a:hover {
  color: #ffd700;
}

.hero {
  text-align: center;
  padding: 4rem 2rem;
  background-image: url('https://i.imgur.com/8I2zYQC.jpg');
  background-size: cover;
  background-position: center;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: #111;
  border-top: 1px solid #444;
}

.solar-system {
  text-align: center;
  padding: 3rem 1rem;
  background-color: #131a33;
}

.solar-system h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
  color: #ffcc70;
}

.planet-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.planet-card {
  text-align: center;
  width: 120px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.planet-card img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 2px solid #ffffff40;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

.planet-card p {
  margin-top: 0.5rem;
  color: #e6e6e6;
  font-weight: bold;
}

.planet-card:hover {
  transform: scale(1.15);
  box-shadow: 0 0 20px #ffd700;
  cursor: pointer;
}

.planet-grid img {
  width: 80px;
  height: 80px;
  transition: transform 0.3s ease;
  border-radius: 50%;
  border: 2px solid #ffffff40;
}

.planet-grid img:hover {
  transform: scale(1.2);
  border-color: #ffd700;
  cursor: pointer;
}

.planet-info {
  background-color: #20294d;
  padding: 2rem;
  margin: 2rem;
  border-radius: 10px;
  text-align: center;
  color: #fff;
  box-shadow: 0 0 10px #00000066;
}

.planet-info h2 {
  color: #ffd700;
  margin-bottom: 1rem;
}

/* ✅ BLUE glowing title for hero header */
.hero-header {
  background-image: url('https://images.unsplash.com/photo-1477201389074-1863f668fac1?ixlib=rb-4.0.0&auto=format&fit=crop&w=1650&q=80');
  background-size: cover;
  background-position: center;
  padding: 3rem 1rem;
  text-align: center;
  border-bottom: 2px solid #444;
}

.hero-header h1 {
  
  margin-bottom: 40px; /* Adjust as needed */


  font-size: 4rem;
  color: #ffffff;
  text-shadow: 0 0 10px #ffffff, 0 0 20px #ffffff, 0 0 30px #ffffff;
  animation: glow 3s ease-in-out infinite alternate;
  letter-spacing: 2px;
  margin-top: 0.5rem;
}

@keyframes glow {
  from {
    text-shadow: 0 0 10px #ffffff, 0 0 20px #ffffff;
  }
  to {
    text-shadow: 0 0 20px #ffffff, 0 0 30px #ffffff;
  }
}

#music-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #1e1e2f;
  color: #ffd700;
  border: none;
  border-radius: 50px;
  padding: 10px 20px;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 0 10px #00000055;
  transition: background 0.3s ease;
  z-index: 1000;
}

#music-toggle:hover {
  background-color: #2e2e4d;
}

.quiz-section {
  padding: 3rem 1rem;
  text-align: center;
  background-color: #0f1230;
  color: #ffffff;
}

.quiz-section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: #00bfff;
  text-shadow: 0 0 10px #00bfff;
}

.quiz-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 0 15px rgba(0, 191, 255, 0.3);
  max-width: 500px;
  margin: 0 auto;
}

.quiz-card .question {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.quiz-card .options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.quiz-card .options button {
  background-color: #1e1e3f;
  color: white;
  border: none;
  padding: 0.75rem;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.3s;
}

.quiz-card .options button:hover {
  background-color: #00bfff;
  color: #000;
}

.quiz-card .feedback {
  margin-top: 1rem;
  font-weight: bold;
}
.quiz-section {
  padding: 3rem 1rem;
  text-align: center;
  background-color: #0f1230;
  color: #ffffff;
}

.quiz-section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: #00bfff;
  text-shadow: 0 0 10px #00bfff;
}

.quiz-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 0 15px rgba(0, 191, 255, 0.3);
  max-width: 600px;
  margin: 0 auto;
}

.quiz-card .question {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.quiz-card .options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.quiz-card .options button {
  background-color: #1e1e3f;
  color: white;
  border: none;
  padding: 0.75rem;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.3s;
}

.quiz-card .options button:hover {
  background-color: #00bfff;
  color: #000;
}

.quiz-card .feedback {
  margin-top: 1rem;
  font-weight: bold;
}

#next-btn,
#play-again-btn {
  margin-top: 1rem;
  background-color: #00bfff;
  border: none;
  color: black;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}

#next-btn:hover,
#play-again-btn:hover {
  background-color: #0099ff;
}



.creator-section {
  background-color: #111b2a;
  padding: 3rem 1rem;
  color: #fff;
  text-align: center;
}

.creator-section form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.creator-section label {
  display: flex;
  flex-direction: column;
  font-size: 1rem;
  text-align: left;
}

.creator-section input[type="text"],
.creator-section select,
.creator-section input[type="color"] {
  padding: 0.5rem;
  border-radius: 8px;
  border: none;
  margin-top: 0.3rem;
}

.creator-section button {
  padding: 0.6rem 1.2rem;
  background-color: #00bfff;
  color: white;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-weight: bold;
}

.creator-section button:hover {
  background-color: #0077ff;
}

#planet-preview {
  margin-top: 2rem;
}

.shape {
  margin: 1rem auto;
  position: relative;
}

/* SHAPE STYLES */
.shape.sphere {
  width: 100px;
  height: 100px;
  border-radius: 50%;
}

.shape.pyramid {
  width: 0;
  height: 0;
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
  border-bottom: 100px solid;
}

.shape.torus {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: transparent;
  border: 20px solid;
  box-sizing: border-box;
}

.shape.cone {
  width: 0;
  height: 0;
  border-left: 60px solid transparent;
  border-right: 60px solid transparent;
  border-bottom: 100px solid;
}

.shape.cylinder {
  width: 80px;
  height: 100px;
  border-radius: 40px / 10px;
}

.preview-info {
  font-size: 0.9rem;
  margin-top: 1rem;
  color: #ccc;
}

.planet-creator {
  text-align: center;
  padding: 2rem;
  background-color: #0e1320;
  border-top: 2px solid #444;
}
.planet-controls {
  margin-bottom: 1rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}
#planet-canvas {
  background: #111;
  border: 2px solid #00bfff;
  border-radius: 10px;
}

.planet-paint-lab {
  background: #0b0f1a;
  color: white;
  padding: 2rem;
  text-align: center;
  border-top: 2px solid #333;
}
.planet-paint-lab .controls {
  margin-bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}
#paintCanvas {
  background-color: #1c1f30;
  border: 2px solid #00bfff;
  border-radius: 10px;
  cursor: crosshair;
}

.planet-creator {
  background: #0e0f2b;
  color: white;
  padding: 2rem;
  text-align: center;
}

.planet-tools {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

#planet-canvas {
  border: 2px solid #00bfff;
  background-color: #1a1c3f;
  border-radius: 10px;
  cursor: crosshair;
}



.planet-info-card {
  background-color: rgba(0, 0, 0, 0.85);
  color: white;
  padding: 2rem;
  border-radius: 20px;
  max-width: 500px;
  margin: 2rem auto;
  text-align: center;
  box-shadow: 0 0 20px #00f0ff;
  display: none;
  font-family: 'Comic Neue', cursive;
}

.planet-info-card button {
  margin-top: 1rem;
  padding: 0.5rem 1.5rem;
  background-color: #00f0ff;
  color: black;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-weight: bold;
}

.planet-info-card.show {
  display: block;
}
/* Planet Info Modal Styles */
.planet-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.planet-modal-content {
  background: #1c1f30;
  color: white;
  padding: 2rem;
  border-radius: 20px;
  width: 80%;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 0 20px #00f0ff;
  animation: fadeIn 0.3s ease-in-out;
}

.planet-modal-close {
  position: absolute;
  top: 10px;
  right: 20px;
  font-size: 2rem;
  color: #ffffff;
  cursor: pointer;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.planet-info,
.planet-info-card,
.planet-modal-content {
  font-family: 'Roboto', sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: #fff;
}

.close-btn {
  background-color: #00c2ff;
  color: black;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.close-btn:hover {
  background-color: #00aaff;
  box-shadow: 0 0 10px #00f0ff, 0 0 20px #00f0ff;
  color: white;
}

.close-btn:hover {
  transform: scale(1.05);
}

.hero {
  text-align: center;
  padding: 4rem 2rem;
  background-image: url('bg.jpg');
  background-size: cover;
  background-position: center;
}

.info-strip {
  background-color: #20205d; /* dark blue or match your theme */
  color: #FFD700; /* bright yellow or any space-themed color */
  text-align: center;
  padding: 6px 0;
  font-size: 14px;
  font-weight: 500;
  margin-top: 6px;
  border-radius: 4px;
  width: 100%;
}

.header-nav a {
  color: #ffd700;
  text-decoration: none;
  font-family: 'Orbitron', sans-serif;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 4px;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}

.header-nav a:hover {
  color: #ffffff;
  text-shadow: 0 0 10px #ffd700;
}
.overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.4); /* dark transparent overlay */
  z-index: -1;
}