:root {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --border: #e2e5ea;
  --text: #1c2128;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-soft: #dbe6ff;
  --mark: #fde68a;
  --mark-border: #f59e0b;
  --name-mark: #e9d5ff;
  --name-border: #9333ea;
  --name-strong: #7e22ce;
  --llm-mark: #cffafe;
  --llm-border: #0891b2;
  --llm-strong: #0e7490;
  --code-bg: #f0f2f5;
  --pass: #15803d;
  --fail: #b45309;
  --privacy-bg: #e9f9ef;
  --privacy-border: #9bdcb4;
  --privacy-strong: #137a3c;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117; --panel: #161b22; --border: #2d333b; --text: #e6edf3;
    --muted: #9198a1; --accent: #4d8bff; --accent-soft: #16243d; --mark: #5c4a12;
    --mark-border: #d2a02c;
    --name-mark: #3b1d57; --name-border: #a855f7; --name-strong: #c98bff;
    --llm-mark: #0b3a44; --llm-border: #22d3ee; --llm-strong: #67e8f9;
    --code-bg: #1c2330; --pass: #4ade80; --fail: #fbbf24;
    --privacy-bg: #0f2a1a; --privacy-border: #1f5236; --privacy-strong: #4ade80;
    --shadow: 0 1px 3px rgba(0,0,0,.4);
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
code { background: var(--code-bg); border-radius: 4px; padding: 1px 5px; font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.muted { color: var(--muted); }

/* ---- Top bar (full bleed) ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 24px; background: var(--panel); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand .tag { color: var(--accent); font-size: 21px; font-weight: 700; letter-spacing: -.01em; }
.brand-sub { color: var(--muted); font-size: 14px; }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.pill-private {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 600;
  color: var(--privacy-strong); background: var(--privacy-bg); border: 1px solid var(--privacy-border);
  border-radius: 20px; padding: 4px 11px;
}
.links a { color: var(--accent); text-decoration: none; margin-left: 14px; font-size: 14px; }
.links a:hover { text-decoration: underline; }

/* ---- Dashboard grid: ~1/3 sidebar + ~2/3 work ---- */
.app {
  display: grid; grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  gap: 20px; align-items: start; padding: 20px 24px 56px;
}
@media (max-width: 860px) { .app { grid-template-columns: 1fr; } }

/* ---- Left: explanatory boxes ---- */
.sidebar { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 72px; }
@media (max-width: 860px) { .sidebar { position: static; } }
.box {
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 15px 16px; box-shadow: var(--shadow);
}
.box h2 { margin: 0 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: .04em;
  color: var(--muted); display: flex; align-items: center; gap: 6px; }
.box p { margin: 0 0 8px; font-size: 13.5px; }
.box p:last-child { margin-bottom: 0; }
.box-private { background: var(--privacy-bg); border-color: var(--privacy-border); }
.box-private h2 { color: var(--privacy-strong); }
.box-private strong { color: var(--privacy-strong); }

.layers { list-style: none; margin: 0 0 10px; padding: 0; }
.layers li { font-size: 13.5px; padding: 5px 0; border-bottom: 1px dashed var(--border);
  display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.layers li:last-child { border-bottom: none; }
.lyr { flex: none; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 11px;
  font-weight: 700; color: var(--accent); background: var(--accent-soft);
  border-radius: 5px; padding: 1px 6px; }
.lyr-name { color: var(--name-strong); background: var(--name-mark); }
.lyr-1 { color: var(--muted); background: var(--code-bg); }
.lyr-llm { color: var(--llm-strong); background: var(--llm-mark); }
.layer-sep { border-top: 1px dashed var(--border); margin: 9px 0; }
.l-tag { margin-left: auto; flex: none; font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .02em; border: 1px solid currentColor; border-radius: 4px; padding: 0 4px; white-space: nowrap; }
.l-live { color: var(--pass); }
.l-pre { color: var(--llm-strong); }
.l-lib { color: var(--muted); }
.box .small { font-size: 12.5px; }

.legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px; font-size: 12.5px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.sw { width: 13px; height: 13px; border-radius: 3px; display: inline-block; }
.sw-regex { background: var(--mark); border-bottom: 2px solid var(--mark-border); }
.sw-name { background: var(--name-mark); border-bottom: 2px solid var(--name-border); }
.sw-llm { background: var(--llm-mark); border-bottom: 2px solid var(--llm-border); }

.box-stat .figures { display: flex; gap: 8px; }
.box-stat .figures div { flex: 1; text-align: center; background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 4px; }
.box-stat .figures b { display: block; font-size: 20px; color: var(--accent); }
.box-stat .figures span { font-size: 11px; color: var(--muted); }

/* ---- Right: working panel ---- */
.work { display: flex; flex-direction: column; min-width: 0; }
.controls {
  display: flex; flex-direction: column; gap: 10px;
  margin-bottom: 14px; padding: 12px 14px; background: var(--panel);
  border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow);
}
.control-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; }
.control-row + .control-row { border-top: 1px solid var(--border); padding-top: 10px; }
.controls label, .examples-label { font-size: 13px; color: var(--muted); margin-right: 6px; }
.controls .field { display: flex; align-items: center; }
.sens-detail { font-size: 12.5px; color: var(--muted); }
.examples-row { align-items: flex-start; }
.examples-row .examples-label { padding-top: 5px; }
#clear { margin-left: auto; }
select, button {
  font: inherit; font-size: 13px; padding: 6px 10px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text); cursor: pointer;
}
select:hover, button:hover { border-color: var(--accent); }
.examples { display: flex; flex-wrap: wrap; gap: 6px; }
.examples button { font-size: 12px; padding: 4px 9px; }

.io-label { font-size: 12px; text-transform: uppercase; letter-spacing: .04em;
  color: var(--muted); margin: 2px 0 6px; }
textarea {
  width: 100%; min-height: 120px; resize: vertical; font: inherit;
  padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel); color: var(--text); box-shadow: var(--shadow);
}
textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
@media (max-width: 1100px) { .grid { grid-template-columns: 1fr; } }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: var(--shadow); overflow: hidden;
}
.card h2 { margin: 0; padding: 10px 14px; font-size: 13px; text-transform: uppercase;
  letter-spacing: .04em; color: var(--muted); border-bottom: 1px solid var(--border); }
.card .body { padding: 14px; font-size: 14.5px; white-space: pre-wrap; word-break: break-word;
  min-height: 64px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

mark { background: var(--mark); color: var(--text); border-bottom: 2px solid var(--mark-border);
  border-radius: 3px; padding: 0 1px; }
mark.m-name { background: var(--name-mark); border-bottom-color: var(--name-border); }
mark.m-llm { background: var(--llm-mark); border-bottom-color: var(--llm-border); }
.ph { background: var(--accent-soft); color: var(--accent); border-radius: 3px;
  padding: 0 3px; font-weight: 600; }

.summary { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 4px; }
.chip { font-size: 12.5px; background: var(--accent-soft); color: var(--accent);
  border-radius: 20px; padding: 3px 11px; font-weight: 600; }
.chip-llm { background: var(--llm-mark); color: var(--llm-strong); }

.llm-panel .card { border-left: 3px solid var(--llm-border); }
.llm-panel .card h2 { color: var(--llm-strong); }
.llm-aside { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.llm-meta { font-size: 12.5px; color: var(--muted); }
.llm-note { font-size: 12px; margin: 0; }
.stat { color: var(--muted); font-size: 13px; margin: 14px 0 6px; }

table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 13.5px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
td.val { font-family: ui-monospace, Menlo, Consolas, monospace; }
td .type { display: inline-block; background: var(--code-bg); border-radius: 4px; padding: 1px 7px; font-size: 12px; }
td .layer-checksum { color: var(--pass); }
td .layer-name { color: var(--name-strong); font-weight: 600; }
.conf-bar { display: inline-block; height: 7px; border-radius: 4px; background: var(--accent); vertical-align: middle; }
.empty { color: var(--muted); padding: 8px 0; }

footer { margin-top: 36px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--border); padding-top: 16px; }
footer a { color: var(--accent); text-decoration: none; }