body {
  font-family: Arial;
  margin:0;
  background:#020617;
  color:white;
  scroll-behavior:smooth;
}

body.light {
  background:#f1f5f9;
  color:black;
}

header {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:15px;
  background:#000;
  position:sticky;
  top:0;
}

nav a {
  margin:10px;
  color:cyan;
  text-decoration:none;
  transition:0.3s;
}

nav a:hover {
  color:white;
}

.glass {
  background:rgba(255,255,255,0.08);
  backdrop-filter:blur(12px);
  margin:20px;
  padding:25px;
  border-radius:15px;
  transition:0.3s;
}

.glass:hover {
  transform:scale(1.02);
}

.hero {
  text-align:center;
  padding:50px;
}

input, textarea {
  padding:12px;
  margin:10px;
  border:none;
  border-radius:6px;
}

button {
  padding:12px 18px;
  margin:10px;
  border:none;
  border-radius:6px;
  background:linear-gradient(45deg, cyan, blue);
  color:white;
  cursor:pointer;
  transition:0.3s;
}

button:hover {
  transform:scale(1.1);
}

.center {
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  text-align:center;
}

#loader {
  position:fixed;
  width:100%;
  height:100%;
  background:black;
  display:flex;
  justify-content:center;
  align-items:center;
  z-index:1000;
  animation:fadeOut 1s forwards;
  animation-delay:1s;
}

@keyframes fadeOut {
  to {
    opacity:0;
    visibility:hidden;
  }
}

.fade {
  animation:fadeIn 1s ease;
}

@keyframes fadeIn {
  from {opacity:0; transform:translateY(20px);}
  to {opacity:1; transform:translateY(0);}
}

canvas {
  max-width:100%;
}