body {
  font-family: Arial, sans-serif;
  background: #e6f9f3;
  color: #044a42;
  text-align: center;
  margin: 0;
  padding: 1em;
}

main {
  max-width: 600px;
  margin: auto;
  padding: 1em;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0, 128, 128, 0.2);
}

h1 {
  color: #007f66;
}

#image-container {
  position: relative;
  width: 100%;
  margin: 1em auto;
  aspect-ratio: 4 / 3;
  border: 2px solid #007f66;
  overflow: hidden;
  border-radius: 8px;
}

#bird-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#image-overlay {
  background: black;
  pointer-events: none;
  position: absolute;
  inset: 0;
  clip-path: inset(0 60% 0 60%);
  transition: clip-path 0.4s ease;
}

input[type="text"], input[type="date"] {
  width: 80%;
  padding: 10px;
  margin-top: 1em;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
}

button {
  margin-top: 1em;
  padding: 10px 20px;
  font-size: 16px;
  background: #007f66;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

button:disabled {
  background: #ccc;
  cursor: not-allowed;
}

#feedback {
  font-size: 18px;
  margin: 1em 0;
}

#tries-left {
  color: #666;
}

#ad-container {
  margin-top: 2em;
}

#attribution {
  font-size: 12px;
  margin-top: 10px;
  color: #444;
}