body {
  font-family: sans-serif;
  background: #f9f9f9;
  color: #333;
  padding: 2rem;
}

.container {
  background: white;
  padding: 2rem;
  max-width: 600px;
  margin: auto;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.1);
}

h3 {
  margin-bottom: 1rem;
}

label {
  margin-left: 0.5rem;
  cursor: pointer;
}

input[type="radio"],
input[type="checkbox"] {
  margin-right: 0.5rem;
  transform: scale(1.2);
}

#questionContainer > div {
  margin-bottom: 1rem;
}

#progressBarContainer {
  height: 10px;
  background-color: #eee;
  border-radius: 10px;
  margin: 2rem 0;
  overflow: hidden;
}

#progressBar {
  height: 100%;
  width: 0%;
  background: #609694;
  border-radius: 10px;
  transition: width 0.3s ease-in-out;
}

button {
  background-color: #609694;
  color: white;
  padding: 0.5rem 1.2rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.2s ease;
}

button:hover {
  background-color: #507e7d;
}

#questionContainer button {
  margin-top: 1rem;
}

.nav-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  padding-top: 25px;
  height: 0;
  margin-bottom: 2rem;
}
.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}