:root {
  --bg: #0e1014;
  --panel: #171a21;
  --panel-2: #1d212a;
  --line: #2a2f3a;
  --line-soft: #232833;
  --txt: #cdd2da;
  --txt-dim: #828a98;
  --accent: #ff6633;
  --accent-dim: #c44e26;
  --ok: #5fb37a;
  --warn: #e0b341;
  --mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  --sans: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.45;
}

body { min-width: 320px; }

a { color: var(--accent); }

header {
  border-bottom: 1px solid var(--line);
  padding: 14px 20px;
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

header h1 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.3px;
  margin: 0;
}
header h1 span { color: var(--accent); }

header .sub {
  color: var(--txt-dim);
  font-size: 12px;
  font-family: var(--mono);
}

.engine {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.engine label {
  color: var(--txt-dim);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.status {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--txt-dim);
  flex: 1;
  min-width: 180px;
}
.status.loaded { color: var(--ok); }
.status.busy { color: var(--warn); }

.bar {
  height: 3px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
  width: 160px;
}
.bar > i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width 120ms linear;
}

select, input[type=text], input[type=number], input[type=search], textarea {
  background: var(--panel-2);
  color: var(--txt);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 6px 8px;
  font-family: var(--mono);
  font-size: 13px;
}
select:focus, input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent-dim);
}

button {
  background: var(--panel-2);
  color: var(--txt);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 6px 12px;
  font-family: var(--sans);
  font-size: 13px;
  cursor: pointer;
}
button:hover { border-color: var(--accent-dim); }
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a0e07;
  font-weight: 600;
}
button.primary:hover { background: var(--accent-dim); border-color: var(--accent-dim); }
button:disabled { opacity: 0.45; cursor: not-allowed; }

.tabs {
  display: flex;
  gap: 2px;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.tabs button {
  border: none;
  border-radius: 0;
  background: transparent;
  color: var(--txt-dim);
  padding: 11px 16px;
  border-bottom: 2px solid transparent;
}
.tabs button.active {
  color: var(--txt);
  border-bottom-color: var(--accent);
}
.tabs button:hover { color: var(--txt); }

.workspace {
  display: grid;
  grid-template-columns: minmax(720px, 1180px) minmax(280px, 420px);
  gap: 20px;
  max-width: 1620px;
  padding: 20px;
}
.views { min-width: 0; }
.view { display: none; }
.view.active { display: block; }

.controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 16px;
}
.field { display: flex; flex-direction: column; gap: 4px; }
.field.grow {
  flex: 1 1 240px;
}
.field label {
  color: var(--txt-dim);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.field select, .field input { min-width: 150px; }
.field.grow input { width: 100%; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

.box {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
}
.box > h3 {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--txt-dim);
  padding: 10px 12px;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.box .body { padding: 12px; }

.rows { list-style: none; margin: 0; padding: 0; }
.rows li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line-soft);
}
.rows li:last-child { border-bottom: none; }
.rows li.sel { background: #20242e; box-shadow: inset 2px 0 0 var(--accent); }
.rows li.sel code { color: var(--accent); }
.rows li.empty {
  color: var(--txt-dim);
  font-family: var(--mono);
  font-size: 12px;
}
.rows code { cursor: pointer; }
.rows code {
  font-family: var(--mono);
  font-size: 12.5px;
  white-space: pre-wrap;
  word-break: break-all;
  flex: 1;
  color: var(--txt);
}
.rows .note {
  display: block;
  color: var(--txt-dim);
  font-family: var(--sans);
  font-size: 11.5px;
  margin-top: 2px;
}
.rows button {
  padding: 2px 8px;
  font-size: 11px;
  flex: none;
}

textarea { width: 100%; resize: vertical; min-height: 150px; }
.out { min-height: 220px; }

.hint {
  color: var(--txt-dim);
  font-size: 12px;
  font-family: var(--mono);
  margin: 10px 0 0;
}
.tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
}

footer {
  border-top: 1px solid var(--line);
  padding: 16px 20px;
  color: var(--txt-dim);
  font-size: 12px;
  max-width: 1180px;
}
footer code { font-family: var(--mono); color: var(--txt); }

.copied { color: var(--ok) !important; }
.gap { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

.guide {
  align-self: start;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  color: var(--txt);
  padding: 16px 18px;
  position: sticky;
  top: 14px;
}
.guide h2,
.guide h3 {
  margin: 0;
  color: var(--txt);
}
.guide h2 {
  font-size: 17px;
  font-weight: 650;
}
.guide h3 {
  border-top: 1px solid var(--line-soft);
  color: var(--txt-dim);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.7px;
  margin-top: 14px;
  padding-top: 14px;
  text-transform: uppercase;
}
.guide p,
.guide li {
  color: var(--txt-dim);
  font-size: 13px;
}
.guide p {
  margin: 8px 0 0;
}
.guide ol {
  margin: 9px 0 0;
  padding-left: 20px;
}
.guide li + li {
  margin-top: 6px;
}
.guide strong {
  color: var(--txt);
  font-weight: 600;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  max-width: calc(100vw - 36px);
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--txt);
  border-radius: 4px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
  font-size: 13px;
  opacity: 0;
  padding: 9px 12px;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 140ms ease, transform 140ms ease;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 560px) {
  header, .engine, .tabs, main, footer { padding-left: 12px; padding-right: 12px; }
  .bar { width: 100%; }
  .tabs button { flex: 1; }
  .field, .field select, .field input { width: 100%; }
  button { min-height: 34px; }
}

@media (max-width: 1220px) {
  .workspace {
    grid-template-columns: 1fr;
  }
  .guide {
    position: static;
  }
}