:root {
  --bg: #fbfbfa;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6b6b70;
  --border: #d9d9de;
  --accent: #2458c6;
  --accent-text: #ffffff;
  --good: #1f7a3d;
  --bad: #b3261e;
  --code-bg: #f4f4f6;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151517;
    --surface: #1d1d20;
    --text: #ececef;
    --muted: #9a9aa2;
    --border: #36363c;
    --accent: #7ea6ff;
    --accent-text: #0d1220;
    --good: #6fd08c;
    --bad: #ff8a80;
    --code-bg: #19191c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 24px 16px 40px;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

header, main, .stats, .lookup, footer {
  max-width: 1200px;
  margin-inline: auto;
}

h1 { margin: 0 0 4px; font-size: 24px; }
header p { margin: 0 0 20px; color: var(--muted); }
a { color: var(--accent); }

main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 760px) {
  main { grid-template-columns: 1fr; }
}

.pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.pane-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.pane-head label, .pane-head .label { font-weight: 600; }
.actions { display: flex; flex-wrap: wrap; gap: 6px; }

button {
  font: inherit;
  font-size: 13px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
button:hover { border-color: var(--accent); }
button:disabled { opacity: 0.6; cursor: progress; }

textarea, .packed {
  height: 55vh;
  min-height: 240px;
}

textarea {
  width: 100%;
  resize: none;
  border: 0;
  padding: 10px 12px;
  background: var(--surface);
  color: var(--text);
  font: 13px/1.5 var(--mono);
}
textarea:focus { outline: 2px solid var(--accent); outline-offset: -2px; }

.packed {
  display: flex;
  overflow: auto;
  background: var(--code-bg);
}

.packed pre {
  margin: 0;
  padding: 10px 0;
  font: 13px/1.5 var(--mono);
}

.gutter {
  position: sticky;
  left: 0;
  padding-inline: 10px 8px !important;
  text-align: right;
  color: var(--muted);
  background: var(--code-bg);
  border-right: 1px solid var(--border);
  user-select: none;
}

.code { padding-inline: 10px !important; }

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
}
.stats b { color: var(--text); font-variant-numeric: tabular-nums; }

.compare { max-width: 1200px; margin: 20px auto 0; }
.compare h2 { margin: 0; font-size: 15px; }
.compare .note { margin: 2px 0 8px; color: var(--muted); font-size: 13px; }
.compare table { width: 100%; border-collapse: collapse; font-size: 14px; }
.compare th {
  width: 1%;
  padding: 3px 12px 3px 0;
  text-align: left;
  font-weight: 400;
  white-space: nowrap;
}
.compare td { padding: 3px 0; }
.compare td.num {
  width: 1%;
  padding-left: 12px;
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.compare .pct { color: var(--muted); display: inline-block; min-width: 4.5em; }
.bar {
  height: 12px;
  min-width: 2px;
  border-radius: 3px;
  background: var(--muted);
  opacity: 0.55;
}
.bar.dawg { background: var(--accent); opacity: 1; }
.bar.best { background: var(--good); opacity: 1; }

@media (max-width: 520px) {
  .compare th { white-space: normal; width: 30%; }
}

.lookup { margin-top: 20px; }
.lookup label { display: block; font-weight: 600; margin-bottom: 4px; }
.lookup input {
  width: min(100%, 360px);
  padding: 6px 10px;
  font: 14px var(--mono);
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
}
.lookup p { margin: 8px 0 0; min-height: 1.5em; overflow-wrap: anywhere; }
.good { color: var(--good); font-weight: 600; }
.bad { color: var(--bad); font-weight: 600; }

footer { margin-top: 28px; color: var(--muted); font-size: 13px; }
code { font-family: var(--mono); }