body {
  font-family: 'Arial', sans-serif;
  background-color: #121212;
  color: #ddd;
  text-align: center;
  margin: 0;
  padding: 0;
}

h1 {
  color: #2e8b57;
  font-size: 3.5em;
  margin-top: 20px;
  text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.3);
}

form {
  margin: 20px auto;
  padding: 25px;
  background: linear-gradient(145deg, #505050, #3e3e3e);
  border-radius: 15px;
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
  display: inline-block;
  width: 90%;
  max-width: 400px;
  transition: transform 0.3s ease-in-out;
  position: relative;
}

form:hover {
  transform: scale(1.02);
}

input {
  width: 100%;
  padding: 14px;
  margin: 12px 0;
  border: 2px solid hsl(146, 50%, 36%);
  border-radius: 10px;
  font-size: 1em;
  background-color: #181818;
  color: white;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  box-sizing: border-box;
}

input[type="text"]:focus {
  border-color: #4CAF50;
  box-shadow: 0 0 8px rgba(76, 175, 80, 0.6);
}

#submit {
  width: 100%;
  padding: 14px;
  background-color: #2e8b57;
  border: none;
  color: white;
  font-size: 1.1em;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease-in-out;
}

button:hover {
  background-color: #248a3e;
  transform: translateY(-2px);
}

button:active {
  transform: translateY(0);
}

iframe {
  width: 100%;
  height: 80vh;
  border: none;
  border-radius: 15px;
  margin-top: 20px;
  box-sizing: border-box;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

@media (max-width: 600px) {
  form {
    width: 95%;
    padding: 20px;
  }

  h1 {
    font-size: 2.5em;
  }

  button {
    font-size: 1em;
  }
}