* {
  box-sizing: border-box;
  padding: 0;
}

body {
  padding: 32px;
  font-family: 'Segoe UI', Helvetica, 'Roboto', sans-serif;
  font-size: 13px;
  background-color: #F4F4F4;
  color: #1d1e1b;
}

.wrapper {
  width: 100%;
  max-width: 640px;
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: stretch;
}

h2 {
  margin: 0;
  font-size: 20px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: #444;
}

input,
select {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0 12px 0 8px;
  border: 1px solid #DDD;
  border-radius: 4px;
  min-height: 40px;
  background: #fff;
  font: inherit;
}

input:focus,
select:focus {
  border: 1px solid #888;
  outline: none;
}

.form-field {
  margin-bottom: 12px;
}

.login-error {
  margin: 0 0 12px;
  color: #8a1f1f;
  font-size: 13px;
}

#signature-area {
  background-color: #ffffff;
  padding: 20px;
  border: 1px solid #ddd;
  border-radius: 4px;
  overflow-x: auto;
}

.btn-group {
  display: flex;
  gap: 12px;
}

.btn {
  display: block;
  width: fit-content;
  margin: 0;
  padding: 4px 16px;
  border-radius: 6px;
  background-color: #000;
  border: none;
  color: #FFF;
  font-weight: bold;
  cursor: pointer;
  min-height: 40px;
  font: inherit;
}

.btn .btn-icon {
  margin-left: 4px;
}

.btn.is-copied {
  background-color: #fff955;
  color: #1d1e1b;
}

.alert {
  display: block;
  margin: 0;
  padding: 8px 10px;
  border-width: 1px;
  border-style: solid;
  border-radius: 4px;
  line-height: 1.45;
}

.alert-info {
  color: #1d1e1b;
  background-color: #fff955;
  border-color: #e6df4c;
}

.alert-note {
  color: #5c5c5c;
  background-color: #f7f7f7;
  border-color: #e4e4e4;
  font-size: 12px;
}

.alert-note .alert-title {
  margin: 0 0 4px;
  font-weight: 600;
  color: #444;
}

.alert ol {
  margin: 0;
  padding-left: 18px;
}

.alert li + li {
  margin-top: 4px;
}

.alert li ul {
  margin: 4px 0;
  padding-left: 18px;
}