body {
  font-family: 'Segoe UI', sans-serif;
  background: #0f172a;
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.card {
  background: #1e293b;
  padding: 30px;
  border-radius: 14px;
  border: 1px solid #f38020;
  width: 360px;
}

input {
  width: 100%;
  padding: 10px;
  margin: 8px 0 16px;
  border-radius: 6px;
  border: 1px solid #475569;
  background: #0f172a;
  color: white;
  box-sizing: border-box;
}

button {
  width: 100%;
  padding: 12px;
  background: #f38020;
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
}

#hasil {
  margin-top: 16px;
  padding: 12px;
  background: #0f172a;
  border-radius: 8px;
  color: #4ade80;
  display: none;
}