body {
  font-family: 'Segoe UI', 'Apple SD Gothic Neo', sans-serif;
  background: #f7f7fa;
  margin: 0;
  padding: 0;
}
#app {
  max-width: 420px;
  margin: 40px auto;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 2px 16px #0001;
  padding: 32px 24px 24px 24px;
}
h1 {
  text-align: center;
  color: #4a4a7a;
  margin-bottom: 24px;
}
#note-form {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}
#note-form input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1em;
}
#note-form button {
  padding: 8px 16px;
  background: #6c63ff;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s;
}
#note-form button:hover {
  background: #4a4a7a;
}
#wall {
  min-height: 80px;
}
.note {
  background: #f0f0ff;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 12px;
  box-shadow: 0 1px 4px #0001;
  display: flex;
  flex-direction: column;
}
.note .author {
  font-weight: bold;
  color: #6c63ff;
  margin-bottom: 4px;
}
.note .date {
  font-size: 0.85em;
  color: #888;
  margin-bottom: 4px;
}
.note .message {
  word-break: break-all;
}