body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #e3f2fd, #e8f5e9);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
}
.container {
  background: white;
  padding: 25px;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
  width: 90%;
  max-width: 500px;
}
h1 {
  text-align: center;
  color: #1976d2;
}
.subtitle {
  text-align: center;
  color: #666;
  margin-bottom: 20px;
}
textarea {
  width: 100%;
  height: 100px;
  padding: 10px;
  font-size: 16px;
  border-radius: 8px;
  border: 1px solid #ccc;
  resize: none;
}
button {
  display: block;
  margin: 15px auto;
  padding: 10px 25px;
  background: #1976d2;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
}
button:hover {
  background: #1565c0;
}
ul {
  list-style: none;
  padding: 0;
}
ul li {
  background: #f7f9fc;
  margin: 8px 0;
  padding: 10px;
  border-radius: 8px;
  border-left: 5px solid #1976d2;
}
.mood-display {
  text-align: center;
  margin-bottom: 20px;
  color: #333;
}
canvas {
  margin-top: 15px;
}