:root {
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:#172622;
  background:#f6f8f6;
  font-synthesis:none;
  --green:#126a4a;
  --line:#dce5df;
  --muted:#67756e;
}
* {
  box-sizing:border-box;
}
body {
  margin:0;
}
button,textarea {
  font:inherit;
}
a {
  color:inherit;
}
button,a,textarea {
  -webkit-tap-highlight-color:transparent;
}
button,a {
  touch-action:manipulation;
}
:focus-visible {
  outline:3px solid #29b680;
  outline-offset:4px;
}
.header {
  max-width:1180px;
  margin:auto;
  padding:24px 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--line);
}
.brand {
  display:block;
}
.brand img {
  display:block;
  width:184px;
  height:auto;
}
.header-note {
  font-size:12px;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:8px;
}
.status-dot {
  width:6px;
  height:6px;
  border-radius:50%;
  background:#22ad76;
}
main {
  max-width:1180px;
  margin:auto;
  padding:52px 32px 40px;
}
.intro {
  margin-bottom:32px;
}
.eyebrow {
  font-size:10px;
  letter-spacing:.19em;
  font-weight:700;
  color:var(--green);
  margin:0 0 16px;
}
h1 {
  font-size:clamp(36px,4.4vw,56px);
  font-weight:650;
  letter-spacing:-.045em;
  line-height:1.08;
  margin:0 0 18px;
}
h1 span {
  color:#8b9990;
}
.description {
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
  margin:0;
}
.mode-switch {
  display:inline-flex;
  gap:4px;
  padding:5px;
  background:#e8eee9;
  border-radius:10px;
  margin-bottom:20px;
}
.mode-switch a {
  min-width:118px;
  padding:10px 16px;
  text-decoration:none;
  border-radius:7px;
  font-size:13px;
  font-weight:600;
  display:flex;
  justify-content:space-between;
  gap:22px;
  color:var(--muted);
}
.mode-switch a[aria-current] {
  background:white;
  color:var(--green);
  box-shadow:0 1px 4px #173d2310;
}
.workspace {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.panel {
  min-width:0;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
}
.output-panel {
  background:#f0f5f1;
}
.panel-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:20px 22px;
  border-bottom:1px solid var(--line);
}
.panel-heading label {
  font-size:14px;
  font-weight:650;
}
.badge {
  font-size:9px;
  letter-spacing:.13em;
  color:#839289;
}
textarea {
  display:block;
  width:100%;
  min-height:256px;
  resize:vertical;
  padding:22px;
  border:0;
  background:transparent;
  color:#203a2e;
  font-family:ui-monospace,SFMono-Regular,Consolas,monospace;
  font-size:13px;
  line-height:1.7;
  border-radius:0;
}
textarea::placeholder {
  color:#929d97;
}
textarea:focus {
  outline:0;
  box-shadow:inset 0 0 0 2px #2aad79;
}
textarea[aria-invalid=true] {
  box-shadow:inset 0 0 0 2px #ba4444;
}
.panel-footer {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 18px;
  border-top:1px solid var(--line);
  min-height:55px;
}
.panel-footer>span {
  font-size:11px;
  color:var(--muted);
}
button {
  border:0;
  border-radius:6px;
  cursor:pointer;
}
button:disabled {
  cursor:default;
  opacity:.42;
}
.panel-footer button {
  background:transparent;
  color:var(--green);
  font-size:11px;
  font-weight:600;
  padding:8px 6px;
}
.panel-footer button:hover:not(:disabled) {
  background:#dfede3;
}
.small-actions {
  display:flex;
  gap:5px;
}
.conversion-bar {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  margin-top:18px;
}
.conversion-bar p {
  font-size:11px;
  line-height:1.6;
  color:var(--muted);
  margin:0;
}
.primary-button {
  display:flex;
  justify-content:space-between;
  gap:36px;
  padding:14px 22px;
  background:var(--green);
  color:white;
  font-size:13px;
  font-weight:600;
  border-radius:9px;
}
.primary-button:hover {
  background:#0a5137;
}
.feedback {
  min-height:22px;
  font-size:12px;
  color:var(--green);
  margin:12px 0 20px;
}
.feedback.error {
  color:#a83636;
}
.details {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
  padding-top:30px;
  border-top:1px solid var(--line);
}
.detail-icon {
  font-family:ui-monospace,monospace;
  font-size:16px;
  color:var(--green);
}
h2 {
  font-size:12px;
  font-weight:650;
  margin:12px 0 8px;
}
.details p {
  font-size:11px;
  color:var(--muted);
  line-height:1.7;
  margin:0;
}
footer {
  max-width:1180px;
  margin:auto;
  padding:20px 32px 28px;
  display:flex;
  justify-content:space-between;
  color:#8c9891;
  font-size:10px;
}
footer span:first-child {
  font-weight:700;
}
@media(max-width:700px) {
  .header {
    padding:18px 20px;
  }
  .brand img {
    width:150px;
  }
  .header-note {
    font-size:10px;
  }
  main {
    padding:36px 20px 24px;
  }
  .workspace {
    grid-template-columns:1fr;
  }
  .intro {
    margin-bottom:24px;
  }
  textarea {
    min-height:190px;
  }
  .conversion-bar {
    align-items:stretch;
    flex-direction:column;
  }
  .primary-button {
    justify-content:center;
  }
  .details {
    grid-template-columns:1fr;
    gap:24px;
  }
  footer {
    padding:20px;
    gap:16px;
  }
  .panel-heading {
    padding:16px 18px;
  }
}
@media(prefers-reduced-motion:no-preference) {
  button,a {
    transition:background-color .15s,color .15s;
  }
}

/* Keep the conversion actions visible beside the text they operate on. */
.header { padding-top:14px; padding-bottom:14px; }
.brand img { width:160px; }
main { padding-top:28px; }
.intro { margin-bottom:22px; }
h1 { font-size:clamp(28px,4vw,42px); line-height:1.2; margin-bottom:10px; }
.eyebrow { margin-bottom:10px; }
.mode-switch { border:1px solid #bacfc1; }
.mode-switch a { font-size:15px; min-height:46px; color:#3c5147; }
.mode-switch a[aria-current] { background:var(--green); color:white; }
.mode-switch a:hover { background:#d3e3d8; color:#174a32; }
.mode-switch a[aria-current]:hover { background:#0a5137; color:white; }
.panel-heading { min-height:72px; padding:14px 18px; }
textarea { min-height:220px; font-size:14px; }
.panel-action { margin:0; padding:16px 18px; border-top:1px solid var(--line); flex-direction:column; align-items:stretch; gap:10px; }
.primary-button { min-height:50px; width:100%; font-size:16px; justify-content:center; gap:14px; box-shadow:0 3px 7px #126a4a22; }
.copy-button { display:flex; align-items:center; gap:8px; min-height:44px; padding:10px 16px; background:#126a4a; color:white; font-size:14px; font-weight:700; border:1px solid #126a4a; }
.copy-button:hover:not(:disabled) { background:#0a5137; }
.copy-button:disabled { opacity:1; background:#e0e8e3; border-color:#ccd8d0; color:#5a6b61; }
.panel-footer button { min-height:40px; font-size:12px; padding:8px 10px; background:#eef4ef; }
.output-hint { font-size:11px; }
.guide { margin-top:32px; padding-top:20px; border-top:1px solid var(--line); max-width:860px; }
.guide h2 { font-size:20px; margin:22px 0 12px; }
.guide p,.guide li { font-size:14px; line-height:1.8; color:#52645a; }
.guide ol { padding-left:22px; }
.guide code { background:#e5ede7; padding:2px 5px; border-radius:4px; overflow-wrap:anywhere; }
.guide a { color:#126a4a; text-underline-offset:3px; }
.guide details { border-bottom:1px solid var(--line); padding:14px 0; }
.guide summary { font-size:15px; font-weight:600; cursor:pointer; line-height:1.5; }
@media(max-width:700px) {
  main { padding-top:24px; }
  .description br { display:none; }
  .mode-switch { display:flex; }
  .mode-switch a { flex:1; justify-content:center; min-width:0; padding:10px; font-size:14px; }
  .panel-heading { padding:12px 16px; }
  textarea { min-height:160px; padding:16px; }
  .panel-footer { padding:10px 14px; }
  .copy-button { padding:10px 12px; }
}