:root {
  --bg: #0a0e14;
  --bg-elev: #111821;
  --bg-elev-2: #16202b;
  --border: #1f2c3a;
  --border-strong: #2a3a4d;
  --text: #e6edf3;
  --text-dim: #9fb1c3;
  --text-faint: #6c7c8d;
  --accent: #06b6d4;
  --accent-hover: #22d3ee;
  --accent-soft: rgba(6, 182, 212, 0.16);
  --warn: #f59e0b;
  --error: #ef4444;
  --good: #10b981;
  --pink: #ec4899;
  --shadow-1: 0 2px 6px rgba(0, 0, 0, 0.3);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "JetBrains Mono", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

code { font-family: var(--mono); background: var(--bg-elev-2); padding: 1px 6px; border-radius: 4px; font-size: 0.92em; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent);
  color: #06121a;
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 800;
}
.brand-name { font-size: 17px; font-weight: 700; letter-spacing: -0.01em; font-family: var(--mono); }
.brand-sub { color: var(--text-faint); font-size: 12px; }
.stats { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.stat-pill {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 12px;
}
.stat-pill strong { color: var(--text); font-weight: 600; }
.stat-chip {
  background: transparent;
  color: var(--text-faint);
  padding: 5px 8px;
  font-size: 11px;
  font-family: var(--mono);
}

.container {
  max-width: 1480px;
  margin: 0 auto;
  padding: 18px 22px 80px;
}

.controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  padding: 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 14px;
}
.control-group { display: flex; align-items: center; gap: 8px; }
.control-label { color: var(--text-faint); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }
.control-spacer { flex: 1; }
.segment {
  display: inline-flex;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2px;
}
.seg-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.seg-btn:hover { color: var(--text); }
.seg-btn.active { background: var(--accent-soft); color: var(--accent); }
.primary {
  background: var(--accent);
  color: #06121a;
  border: none;
  padding: 9px 18px;
  border-radius: 8px;
  font-weight: 700;
  font-family: var(--mono);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}
.primary:hover { background: var(--accent-hover); }
.primary:active { transform: translateY(1px); }
.primary[disabled] { opacity: 0.5; cursor: progress; }
.rate-chip {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 6px 10px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
}
.rate-chip.limit { color: var(--warn); border-color: rgba(245, 158, 11, 0.4); }

.workspace {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  height: calc(100vh - 280px);
  min-height: 480px;
}
@media (max-width: 1100px) { .workspace { grid-template-columns: 1fr; height: auto; } .pane { min-height: 320px; } }

.pane {
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.pane-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev-2);
}
.pane-title { font-weight: 600; font-size: 12px; letter-spacing: 0.02em; color: var(--text); }
.pane-meta { color: var(--text-faint); font-family: var(--mono); font-size: 11px; flex: 1; }
.copy-btn {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  padding: 4px 9px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 11px;
  cursor: pointer;
}
.copy-btn:hover { color: var(--text); border-color: var(--accent); }
.copy-btn.copied { color: var(--good); border-color: var(--good); }
.pane-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  background: var(--bg);
}

textarea#input {
  width: 100%;
  height: 100%;
  min-height: 380px;
  background: transparent;
  color: var(--text);
  border: none;
  resize: none;
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  outline: none;
}
textarea#input::placeholder { color: var(--text-faint); }

.output {
  margin: 0;
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
  white-space: pre;
  overflow: visible;
  min-height: 100%;
}

.output .tag { color: #7dd3fc; }
.output .attr { color: #f5b8e1; }
.output .str { color: #a7f3d0; }
.output .sel { color: #f5b8e1; }
.output .prop { color: #7dd3fc; }
.output .val { color: #a7f3d0; }
.output .comment { color: var(--text-faint); font-style: italic; }
.output .at { color: var(--warn); }

.result {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.badge-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.diff-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--mono);
}
.b-num {
  background: var(--bg-elev-2);
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 22px;
  color: var(--text);
}
.b-num.before { color: var(--warn); }
.b-num.after { color: var(--good); }
.b-arrow { color: var(--text-faint); font-size: 18px; }
.b-meta {
  color: var(--good);
  background: rgba(16, 185, 129, 0.12);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 700;
}
.b-meta.zero { color: var(--text-dim); background: var(--bg-elev-2); }
.b-meta.regress { color: var(--error); background: rgba(239, 68, 68, 0.12); }

.share-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 320px;
}
.share-link {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 7px 10px;
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 12px;
}
.open-share {
  font-family: var(--mono);
  font-size: 12px;
  padding: 6px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
}
.open-share:hover { background: var(--bg-elev-2); text-decoration: none; }

.clusters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: var(--mono);
  font-size: 12px;
}
.cluster-chip {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 11px;
  color: var(--text);
}
.cluster-chip .dot { color: var(--accent); margin-right: 6px; }
.cluster-chip .count { color: var(--text-faint); margin-left: 5px; }

.unresolved {
  padding: 10px 14px;
  border: 1px solid rgba(245, 158, 11, 0.4);
  background: rgba(245, 158, 11, 0.08);
  border-radius: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--warn);
}

.error-bar {
  margin-top: 14px;
  padding: 10px 14px;
  border: 1px solid rgba(239, 68, 68, 0.5);
  background: rgba(239, 68, 68, 0.1);
  color: #fca5a5;
  border-radius: 10px;
  font-family: var(--mono);
  font-size: 13px;
}

.explainer {
  margin-top: 36px;
  padding: 20px 22px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-dim);
}
.explainer h2 { color: var(--text); font-size: 16px; margin: 0 0 8px; }
.explainer p { margin: 0 0 8px; }
.explainer ul { margin: 6px 0 0; padding-left: 20px; }
.explainer li { margin-bottom: 4px; }

.footer {
  border-top: 1px solid var(--border);
  margin-top: 30px;
  padding: 18px 22px;
  text-align: center;
  color: var(--text-faint);
  font-size: 12px;
}

/* share page */
.share-meta {
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 14px;
}
.share-meta .try-cta {
  margin-left: auto;
  background: var(--accent);
  color: #06121a;
  padding: 7px 14px;
  border-radius: 8px;
  font-weight: 700;
  font-family: var(--mono);
  font-size: 12px;
}
.share-meta .try-cta:hover { text-decoration: none; background: var(--accent-hover); }