* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Verdana, sans-serif;
  background: linear-gradient(to right, #1e293b, #0f172a);
  color: #f8fafc;
  min-height: 100vh;
}

.hero {
  text-align: center;
  padding: 50px 20px;
  background: rgba(255,255,255,0.05);
  border-bottom: 2px solid #38bdf8;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 10px;
  color: #38bdf8;
}

.hero p {
  color: #cbd5e1;
  font-size: 1.1rem;
}

.container {
  width: 90%;
  max-width: 950px;
  margin: 40px auto;
}

.card {
  background: #ffffff10;
  border: 1px solid #334155;
  border-radius: 14px;
  padding: 25px;
  margin-bottom: 30px;
  backdrop-filter: blur(6px);
}

.card h2 {
  margin-bottom: 15px;
  color: #38bdf8;
}

.card p {
  line-height: 1.7;
  margin-bottom: 14px;
}

code {
  background: #0f172a;
  padding: 3px 6px;
  border-radius: 4px;
  color: #38bdf8;
}

pre {
  background: #020617;
  color: #f8fafc;
  padding: 16px;
  border-radius: 10px;
  overflow-x: auto;
  margin: 15px 0;
  line-height: 1.5;
}

.demo-area {
  margin-top: 20px;
}

button {
  background: #38bdf8;
  border: none;
  color: #fff;
  padding: 10px 18px;
  margin: 5px;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
  font-size: 0.95rem;
}

button:hover {
  background: #0ea5e9;
  transform: scale(1.05);
}

#style-box {
  margin-top: 20px;
  background: #38bdf8;
  color: #fff;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  font-weight: bold;
  transition: 0.4s;
}

#message-box {
  margin-top: 20px;
  background: #0f766e;
  padding: 25px;
  border-radius: 10px;
  text-align: center;
  font-weight: bold;
  border: 2px solid #14b8a6;
}

@media (max-width: 600px) {

  .hero h1 {
    font-size: 2rem;
  }

  button {
    width: 100%;
  }

  .card {
    padding: 18px;
  }
}