:root {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Ubuntu, Cantarell,
    'Noto Sans', sans-serif;
  line-height: 1.5;
  color: #0f172a;
  background: #f1f5f9;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
}

.page {
  max-width: 44rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  font-weight: 700;
}

.lede {
  margin: 0;
  color: #334155;
  font-size: 1rem;
}

.main {
  flex: 1;
  margin-top: 1.75rem;
}

.label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

.textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  font: inherit;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  resize: vertical;
  min-height: 12rem;
  background: #fff;
}

.textarea:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.textarea:disabled {
  opacity: 0.7;
}

.button {
  margin-top: 1rem;
  padding: 0.65rem 1.25rem;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: #2563eb;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.button:hover:not(:disabled) {
  background: #1d4ed8;
}

.button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.status {
  margin-top: 1.25rem;
  color: #475569;
  font-size: 0.95rem;
}

.error {
  margin-top: 1.25rem;
  padding: 0.75rem 1rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  color: #991b1b;
  font-size: 0.95rem;
}

.result {
  margin-top: 1.75rem;
  padding: 1.25rem 1.35rem;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  box-shadow: 0 1px 2px rgb(15 23 42 / 6%);
}

.result h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.markdown {
  font-size: 0.98rem;
  color: #1e293b;
}

.markdown h1,
.markdown h2,
.markdown h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1.05rem;
}

.markdown h1:first-child,
.markdown h2:first-child,
.markdown h3:first-child {
  margin-top: 0;
}

.markdown p {
  margin: 0 0 0.75rem;
}

.markdown ul,
.markdown ol {
  margin: 0 0 0.75rem;
  padding-left: 1.35rem;
}

.markdown li {
  margin-bottom: 0.35rem;
}

.markdown code {
  font-size: 0.9em;
  background: #f1f5f9;
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.markdown pre {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  overflow-x: auto;
  font-size: 0.88rem;
}

.markdown pre code {
  background: none;
  padding: 0;
}

.footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid #cbd5e1;
  font-size: 0.85rem;
  color: #475569;
}

.footer p {
  margin: 0;
}

.footer strong {
  color: #334155;
}