:root {
  --paper: #e9efec;
  --panel: #f8fbf9;
  --sheet: #ffffff;
  --card: #eaf1ee;
  --line: #cfdcd6;
  --ink: #15302a;
  --ink-soft: #33504a;
  --muted: #6b817b;
  --jade: #1d7a62;
  --jade-soft: #d7ede5;
  --violet: #6c4fc2;
  --crimson: #b3264a;
  --crimson-soft: #f6dde4;
  --sans: "Onest", -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", Menlo, Consolas, monospace;
  --editor-line: 20px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 14px/1.45 var(--sans);
  display: flex;
  flex-direction: column;
}

code, textarea { font-family: var(--mono); }

/* ---------- шапка ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 22px;
  background: var(--ink);
  color: #e6f2ed;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--jade);
  color: #fff;
  font: 600 15px var(--mono);
  letter-spacing: -0.5px;
}
.topbar h1 { margin: 0; font-size: 19px; font-weight: 700; letter-spacing: 0.2px; }
.topbar p { margin: 1px 0 0; color: #9fbab2; font-size: 13px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

button {
  font: 500 14px var(--sans);
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
}
.topbar button {
  border: 1px solid #3f5d56;
  background: transparent;
  color: #e6f2ed;
}
.topbar button:hover { border-color: #e6f2ed; }
.topbar button.primary { background: var(--jade); border-color: var(--jade); color: #fff; }
.topbar button.primary:hover { background: #23906f; }

/* ---------- раскладка ---------- */
.layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(380px, 1fr);
  gap: 16px;
  padding: 16px 22px 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 12px 16px 8px;
}
h2 { margin: 0; font-size: 16px; font-weight: 700; }
.muted { color: var(--muted); font-size: 12px; font-family: var(--mono); }

/* ---------- редактор ---------- */
.editor-panel.drop { outline: 2px dashed var(--jade); outline-offset: -6px; }

.editor-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  margin: 0 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  background: var(--sheet);
}

.gutter {
  flex: none;
  width: 48px;
  padding: 10px 0;
  overflow: hidden;
  text-align: right;
  font: 12px/var(--editor-line) var(--mono);
  color: #9bb0a9;
  background: var(--card);
  border-right: 1px solid var(--line);
  user-select: none;
}
.gutter div { padding-right: 9px; height: var(--editor-line); }
.gutter .cond { color: var(--violet); font-weight: 600; box-shadow: inset 3px 0 var(--violet); }
.gutter .deepest { color: var(--crimson); font-weight: 600; box-shadow: inset 3px 0 var(--crimson); background: var(--crimson-soft); }

#editor {
  flex: 1;
  border: 0;
  outline: none;
  resize: none;
  padding: 10px 14px;
  font: 13px/var(--editor-line) var(--mono);
  color: var(--ink);
  background: transparent;
  white-space: pre;
  overflow: auto;
  tab-size: 4;
}
#editor::selection { background: #c4e6da; }

.legend {
  display: flex;
  gap: 18px;
  padding: 8px 16px 12px;
  font-size: 12px;
  color: var(--muted);
}
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; }
.dot.cond { background: var(--violet); }
.dot.deepest { background: var(--crimson); }

/* ---------- результаты ---------- */
.results-panel { padding: 14px 16px 16px; overflow: auto; }
.results-title { font-size: 20px; margin-bottom: 12px; }
#results.stale .cards, #results.stale .control { opacity: 0.35; }

.cards { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.card {
  position: relative;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-top: 4px solid var(--jade);
  border-radius: 4px;
  padding: 12px 14px;
}
.card:nth-child(2) { border-top-color: var(--violet); }
.card:nth-child(3) { border-top-color: var(--crimson); }
.card-symbol {
  display: inline-block;
  font: 600 12px var(--mono);
  color: var(--ink-soft);
  background: var(--card);
  border-radius: 3px;
  padding: 1px 6px;
  margin-bottom: 6px;
}
.card-label { color: var(--muted); font-size: 13px; min-height: 38px; }
.card-value {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.1;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}
.card-note { color: var(--muted); font-size: 12px; margin-top: 4px; font-family: var(--mono); }

.control {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 12px 0 4px;
  padding: 8px 12px;
  border: 1px dashed var(--line);
  border-radius: 4px;
}
.control h3 { margin: 0; font-size: 14px; }
.control p { margin: 0; color: var(--muted); }
.control b { color: var(--ink); font-family: var(--mono); }

.error {
  background: var(--crimson-soft);
  border: 1px solid #e6b3c1;
  border-left: 4px solid var(--crimson);
  color: #7a1631;
  border-radius: 4px;
  padding: 10px 14px;
  margin-bottom: 12px;
}

/* ---------- вкладки и таблицы ---------- */
.tabs {
  display: inline-flex;
  gap: 2px;
  margin: 14px 0 8px;
  padding: 3px;
  background: var(--card);
  border-radius: 999px;
}
.tab { border: 0; padding: 6px 14px; background: none; color: var(--ink-soft); }
.tab.active { background: var(--ink); color: #e6f2ed; }
.badge { font: 600 11px var(--mono); margin-left: 4px; opacity: 0.75; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left;
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  padding: 6px 8px;
  border-bottom: 2px solid var(--ink);
  position: sticky;
  top: 0;
  background: var(--panel);
}
td { padding: 5px 8px; border-bottom: 1px solid #dfe8e4; vertical-align: top; }
td.num { text-align: right; font-variant-numeric: tabular-nums; width: 1%; white-space: nowrap; }
td code { font-size: 12px; word-break: break-word; }
tr[data-line] { cursor: pointer; }
tr[data-line]:hover { background: var(--card); }
tr.deep td { background: var(--crimson-soft); }
.level {
  display: inline-block;
  min-width: 24px;
  text-align: center;
  border-radius: 3px;
  font: 600 12px var(--mono);
  background: color-mix(in srgb, var(--jade) calc(var(--lvl) * 17%), var(--card));
  color: var(--ink);
}
.level.hot { color: #fff; }
.empty { text-align: center; color: var(--muted); padding: 16px; }

.rules p { margin: 0 0 10px; }
.rules code { font-size: 12px; background: var(--card); padding: 1px 4px; border-radius: 3px; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .editor-panel { min-height: 60vh; }
  .cards { grid-template-columns: 1fr; }
}