* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: #2b78e4; /* Vibrant blue */
}

/* T5S Project Background Splash Screen */
#t5s-splash {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: url('t5s-project-background.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 9999;
  opacity: 1;
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: auto;
}

#t5s-splash.fade-out {
  opacity: 0;
  pointer-events: none;
}

#t5s-splash.hidden {
  display: none;
}

/* Blue Canvas */
canvas {
  display: block;
  width: 100vw;
  height: 100vh;
  background-color: #2b78e4; /* Pure blue background */
}