body {
  font-family: 'Segoe UI', 'Hiragino Sans', 'Meiryo', sans-serif;
  background: #f7f7f7;
  margin: 0;
  padding: 0;
}
#form-container, #complete-container {
  max-width: 400px;
  margin: 40px auto;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  padding: 32px 24px;
}
form > div {
  margin-bottom: 18px;
}
label {
  display: block;
  margin-bottom: 6px;
  font-weight: bold;
}
input[type="text"], textarea {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1em;
  box-sizing: border-box;
}
textarea {
  min-height: 80px;
}
button[type="submit"] {
  background: #0078d7;
  color: #fff;
  border: none;
  padding: 10px 24px;
  border-radius: 4px;
  font-size: 1em;
  cursor: pointer;
  margin-top: 10px;
}
button[type="submit"]:hover {
  background: #005fa3;
}
.canvas-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
#clear-signature {
  background: #eee;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 6px 12px;
  cursor: pointer;
}
#clear-signature:hover {
  background: #f5f5f5;
}
#signature-error {
  margin-top: 4px;
}