:root {
  color-scheme: light;
}

body {
  margin: 0;
  font-family: Roboto, "Segoe UI", sans-serif;
  background: #f5f7fa;
  color: #1c2430;
}

main {
  max-width: 720px;
  margin: 40px auto;
  padding: 24px;
  background: #ffffff;
  border: 1px solid #d7dce3;
  border-radius: 10px;
  box-sizing: border-box;
}

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

p {
  margin-top: 0;
  color: #445064;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
}

textarea {
  width: 100%;
  min-height: 140px;
  resize: vertical;
  border: 1px solid #c3cad4;
  border-radius: 8px;
  padding: 10px;
  box-sizing: border-box;
  font: inherit;
}

.meta {
  margin-top: 6px;
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

#status {
  color: #445064;
}

button {
  margin-top: 14px;
  background: #147792;
  color: white;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.result {
  margin-top: 20px;
  padding: 12px;
  border-radius: 8px;
  background: #f0f4fa;
  border: 1px solid #c7d3e5;
  white-space: pre-wrap;
}

.error {
  background: #fff2f2;
  border-color: #f0c7c7;
}