/* Reset & Font */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: #222;
  background: #f9f9f9;
  line-height: 1.6;
  padding: 0;
  margin: 0;
}

/* Utility */
.fullscreen {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.center {
  text-align: center;
}
.hidden {
  display: none;
}

/* Animasi */
.fade {
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
}
.show {
  opacity: 1;
}
.hide {
  opacity: 0;
}

/* Message Warning */
.message-box {
  background: white;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  max-width: 400px;
}

/* Hero Section */
.hero {
  padding: 3rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
}
.hero h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.1rem;
}

/* Content */
.content {
  padding: 2rem;
  max-width: 900px;
  margin: auto;
  background: white;
  border-radius: 1rem;
  box-shadow: 0 3px 8px rgba(0,0,0,0.1);
  margin-top: -2rem;
  position: relative;
  z-index: 1;
}
.content ul {
  margin: 1rem 0 1.5rem 1.5rem;
}
.content li {
  margin-bottom: 0.5rem;
}

/* Footer */
.footer {
  padding: 2rem;
  text-align: center;
  background: #222;
  color: #fff;
  margin-top: 2rem;
}

/* Responsive tweaks */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 1.5rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .content {
    padding: 1.2rem;
  }
}