* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  overflow: hidden;
  background: radial-gradient(circle at center, #050510, #000000);
  color: white;
  transition: background 2s ease;
}

canvas {
  display: block;
}

.ui {
  position: fixed;
  top: 20px;
  left: 20px;
  background: rgba(0, 0, 0, 0.5);
  padding: 15px 20px;
  border-radius: 12px;
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 10;
}

.ui h1 {
  font-size: 18px;
  margin-bottom: 6px;
}

.ui p {
  font-size: 13px;
  opacity: 0.8;
  line-height: 1.4;
  margin-bottom: 4px;
}

.reset-btn {
  margin-top: 10px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  color: white;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.3s ease;
  width: 100%;
}

.reset-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.reset-btn:active {
  transform: translateY(0);
}

.technical-btn {
  margin-top: 8px;
  padding: 8px 16px;
  background: rgba(100, 100, 255, 0.2);
  border: 1px solid rgba(100, 100, 255, 0.4);
  border-radius: 8px;
  color: white;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.3s ease;
  width: 100%;
}

.technical-btn:hover {
  background: rgba(100, 100, 255, 0.3);
  transform: translateY(-2px);
}

.technical-btn:active {
  transform: translateY(0);
}

/* Technical Section */
.technical-section {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  overflow-y: auto;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.technical-section.active {
  opacity: 1;
  pointer-events: all;
}

.close-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: white;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 101;
}

.close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.technical-content {
  max-width: 900px;
  margin: 60px auto;
  padding: 40px 20px;
}

.technical-content h2 {
  font-size: 36px;
  margin-bottom: 40px;
  text-align: center;
  background: linear-gradient(45deg, #667eea, #764ba2, #f093fb);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tech-block {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 30px;
  margin-bottom: 30px;
  backdrop-filter: blur(5px);
}

.tech-block h3 {
  font-size: 24px;
  margin-bottom: 15px;
  color: #667eea;
}

.tech-block p {
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 15px;
  opacity: 0.9;
}

.tech-block ul {
  margin-left: 20px;
  margin-top: 10px;
}

.tech-block li {
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 8px;
  opacity: 0.85;
}

.tech-block strong {
  color: #f093fb;
}

/* Loader styles */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at center, #0a0a1e, #000000);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeOut 0.5s ease 5s forwards;
}

.loader-content {
  text-align: center;
  padding: 40px;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.loader-content h2 {
  font-size: 28px;
  margin-bottom: 20px;
  background: linear-gradient(45deg, #667eea, #764ba2, #f093fb);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 2s infinite;
}

.loader-spinner {
  width: 60px;
  height: 60px;
  margin: 20px auto;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top: 4px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.planet-fact {
  margin-top: 20px;
  font-size: 14px;
  opacity: 0.9;
  line-height: 1.6;
  max-width: 400px;
  font-style: italic;
}

@keyframes fadeOut {
  to {
    opacity: 0;
    pointer-events: none;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes shimmer {
  0%, 100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.3);
  }
}