:root {
  --bg: #0f0f12;
  --card: #171a21;
  --text: #f3f6fd;
  --muted: #9aa3b2;
  --accent: #4ba3ff;
  --danger: #ff5a7c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  overflow: hidden;
  height: 100vh;
}

#particleCanvas {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1;
  background: linear-gradient(135deg, #0f0f12 0%, #1a1a2e 50%, #16213e 100%);
}

#modelContainer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

#modelContainer canvas {
  display: block;
}

.loading {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  text-align: center;
  color: var(--text);
}

.loader {
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-left: 4px solid var(--accent);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading p {
  margin: 0;
  font-size: 16px;
  opacity: 0.8;
}

.hidden {
  display: none !important;
}