* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  max-width: 640px;
  margin: 40px auto;
  padding: 0 16px;
  color: #1a1a1a;
  line-height: 1.5;
}

h1 {
  font-size: 1.5rem;
  margin: 0 0 8px;
}

.hidden {
  display: none;
}

button {
  padding: 8px 16px;
  margin: 4px 4px 4px 0;
  cursor: pointer;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #fff;
  font-size: 14px;
}

button:hover {
  background: #f5f5f5;
}

.login-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

#btn-google {
  background: #4285f4;
  color: #fff;
  border-color: #4285f4;
}

#btn-google:hover {
  background: #357ae8;
}

#btn-apple {
  background: #000;
  color: #fff;
  border-color: #000;
}

#btn-apple:hover {
  background: #333;
}

.note {
  border: 1px solid #e0e0e0;
  padding: 12px;
  margin: 8px 0;
  border-radius: 8px;
  background: #fafafa;
}

.note small {
  color: #666;
  display: block;
  margin-top: 4px;
}

.btn-del {
  margin-top: 8px;
  color: #c62828;
  border-color: #ef9a9a;
}

input[type="text"] {
  width: 100%;
  padding: 10px;
  margin: 8px 0;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 14px;
}

hr {
  border: none;
  border-top: 1px solid #eee;
  margin: 16px 0;
}

#user-email {
  color: #555;
}