:root {
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --soft: #f5f5f7;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  letter-spacing: -.02em;
  -webkit-font-smoothing: antialiased;
}
button, textarea { font: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 2;
  background: rgba(255, 255, 255, .9);
  border-bottom: 1px solid rgba(0, 0, 0, .08);
  backdrop-filter: blur(18px);
}
.nav, main, .site-footer {
  width: min(calc(100% - 40px), 1080px);
  margin-inline: auto;
}
.nav {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wordmark {
  color: var(--ink);
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -.04em;
  text-decoration: none;
}
.nav-label, .eyebrow, .demo-examples, .workspace-bar, #character-count,
.privacy-note, .site-footer {
  color: var(--muted);
  font-size: 12px;
}
.hero { padding: 96px 0 64px; }
.eyebrow-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.eyebrow {
  margin: 0;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.demo-badge {
  padding: 5px 10px;
  background: var(--soft);
  border-radius: 999px;
  color: var(--ink);
  font-weight: 600;
}
h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(52px, 8vw, 84px);
  font-weight: 600;
  letter-spacing: -.055em;
  line-height: .96;
}
h1 span { color: #86868b; }
.hero-copy {
  max-width: 590px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.4;
}
.demo-examples {
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.example-list { display: flex; flex-wrap: wrap; gap: 8px; }
.example-button {
  padding: 9px 14px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  cursor: pointer;
  font-size: 13px;
}
.example-button.is-selected {
  background: var(--ink);
  border-color: var(--ink);
  color: white;
}
[data-demo-only][hidden] { display: none; }
.workspace {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
}
.workspace-bar {
  min-height: 48px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.ready-state { display: flex; align-items: center; gap: 8px; }
.ready-dot { width: 6px; height: 6px; background: var(--ink); border-radius: 50%; }
.is-working .ready-dot { animation: pulse 1s infinite alternate; }
.is-error .ready-dot { background: #b42318; }
.editor-grid { display: grid; grid-template-columns: 1fr 1fr; }
.editor-pane { min-width: 0; padding: 24px; }
.input-pane { border-right: 1px solid var(--line); }
.output-pane { background: var(--soft); }
.pane-header {
  height: 34px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.pane-header label { font-size: 14px; font-weight: 600; }
textarea {
  width: 100%;
  height: 320px;
  padding: 0;
  resize: none;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
}
textarea::placeholder { color: #a1a1a6; }
.pane-actions {
  min-height: 48px;
  padding-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
}
.text-button {
  padding: 8px 0;
  background: none;
  border: 0;
  color: var(--ink);
  cursor: pointer;
  font-size: 13px;
}
.text-button:hover:not(:disabled) { text-decoration: underline; }
.text-button:disabled { color: #a1a1a6; cursor: default; }
.copy-button { margin-top: -8px; }
.submit-button {
  position: relative;
  min-width: 112px;
  padding: 10px 20px;
  background: var(--ink);
  border: 0;
  border-radius: 999px;
  color: white;
  cursor: pointer;
  font-size: 14px;
}
.submit-button:hover:not(:disabled) { background: #000; }
.submit-button:disabled { cursor: not-allowed; opacity: .25; }
.submit-button--loading .submit-button-text { opacity: 0; }
.submit-button--loading::after {
  position: absolute;
  inset: 0;
  width: 14px;
  height: 14px;
  margin: auto;
  border: 2px solid #777;
  border-top-color: white;
  border-radius: 50%;
  content: "";
  animation: spin .8s linear infinite;
}
.privacy-note { margin: 18px 0 0; text-align: center; }
.site-footer {
  margin-top: 72px;
  padding: 22px 0 32px;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
}
button:focus-visible, a:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
@media (max-width: 720px) {
  .hero { padding: 70px 0 44px; }
  .demo-examples { align-items: flex-start; flex-direction: column; gap: 10px; }
  .editor-grid { grid-template-columns: 1fr; }
  .input-pane { border-right: 0; border-bottom: 1px solid var(--line); }
  textarea { height: 240px; }
}
@media (max-width: 480px) {
  .nav, main, .site-footer { width: calc(100% - 24px); }
  .nav-label, .range-label { display: none; }
  h1 { font-size: 48px; }
  .workspace { border-radius: 18px; }
  .workspace-bar, .editor-pane { padding-inline: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; }
}
@keyframes spin { to { transform: rotate(1turn); } }
@keyframes pulse { to { opacity: .3; } }