@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
  color: #fff;
  margin: 0;
  padding: 20px;
  min-height: 100vh;
}

.container {
  max-width: 950px;
  margin: auto;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  border: 1px solid rgba(255, 215, 0, 0.3);
}

header {
  background: linear-gradient(to right, #c00, #ff2222);
  padding: 20px;
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  text-shadow: 0 3px 10px rgba(0,0,0,0.5);
}

.controls {
  padding: 25px;
  text-align: center;
  background: rgba(0,0,0,0.3);
}

.controls select, .controls input {
  padding: 12px 16px;
  font-size: 16px;
  border-radius: 10px;
  border: none;
  margin: 8px;
  background: #fff;
  color: #000;
  width: 220px;
}

button {
  padding: 14px 28px;
  font-size: 17px;
  font-weight: 600;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  margin: 8px;
}

.btn-acak {
  background: linear-gradient(45deg, #ffd700, #ffaa00);
  color: #000;
}

.btn-salin {
  background: linear-gradient(45deg, #00cc00, #009900);
  color: white;
}

button:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.4);
}

.preview {
  padding: 30px;
  background: rgba(0, 0, 0, 0.4);
  margin: 10px 25px;
  border-radius: 15px;
  border: 2px solid rgba(255, 215, 0, 0.4);
  min-height: 400px;
  overflow-y: auto;
}

.preview p {
  text-align: center;
  line-height: 1.7;
  margin: 14px 0;
}

.highlight {
  color: #ffd700;
  text-decoration: underline;
  font-weight: 700;
}

footer {
  text-align: center;
  padding: 15px;
  font-size: 14px;
  opacity: 0.8;
}

h2 { margin: 0; }