body {
  margin: 0;
  padding: 0;
  font-family: 'Arial', sans-serif;
  background-color: #121212;
  color: white;
  position: relative;
  overflow-x: hidden;
}

#particles-js {
  position: fixed;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 50px 20px;
  text-align: center;
}

button {
  background-color: #f5c242;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
  margin: 10px;
}

input[type="text"] {
  padding: 10px;
  width: 200px;
  margin: 10px;
}

.card {
  background-color: #1e1e1e;
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
  text-align: left;
  border-left: 5px solid;
}

.red { border-color: red; }
.yellow { border-color: yellow; }
.blue { border-color: blue; }
.green { border-color: limegreen; }
.purple { border-color: violet; }

footer {
  margin-top: 40px;
  font-size: 0.8em;
  color: gray;
}

.blurred {
  filter: blur(8px);
  pointer-events: none;
  user-select: none;
}

.hidden {
  display: none;
}