:root {
  --background-color: #ffffff;
  --text-color: #333333;
}

[data-theme="dark"] {
  --background-color: #333333;
  --text-color: #ffffff;
}

body {
  background-color: var(--background-color);
  color: var(--text-color);
  font-family: sans-serif;
  transition: background-color 0.3s, color 0.3s;
  padding: 20px;
  max-width: 600px;
  margin: 0 auto;
}

.suggestion-form {
  margin-top: 40px;
  padding: 20px;
  border: 1px solid var(--text-color);
  border-radius: 8px;
}

.suggestion-form h2 {
  margin-top: 0;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: bold;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--text-color);
  border-radius: 4px;
  background-color: var(--background-color);
  color: var(--text-color);
  font-family: inherit;
  font-size: 14px;
  box-sizing: border-box;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  opacity: 0.6;
}

.suggestion-form button[type="submit"] {
  width: 100%;
  padding: 12px;
  background-color: var(--text-color);
  color: var(--background-color);
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
  transition: opacity 0.2s;
}

.suggestion-form button[type="submit"]:hover {
  opacity: 0.8;
}