:root {
  --bg: #101317;
  --panel: #171b21;
  --line: #2a3038;
  --fg: #d7dde5;
  --muted: #8b96a5;
  --accent: #6fb3ff;
  --ok: #7bd88f;
  --err: #ff7b72;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-size: 13px;
}

header {
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
}

header h1 {
  margin: 0 0 4px;
  font-size: 16px;
}
header .sub {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  max-width: 90ch;
}

main {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 0;
  height: calc(100vh - 74px);
}

#panel {
  border-right: 1px solid var(--line);
  padding: 12px;
  overflow-y: auto;
  background: var(--panel);
}

.field {
  display: block;
  margin-bottom: 8px;
}
.field > span {
  display: block;
  color: var(--muted);
  margin-bottom: 3px;
}

select,
input[type='text'],
input[type='number'] {
  width: 100%;
  background: #0c0f13;
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 5px 6px;
  font: inherit;
}

input[type='checkbox'] {
  margin-right: 6px;
}

.desc {
  color: var(--muted);
  font-size: 12px;
  margin: 6px 0 12px;
}

.buttons {
  display: flex;
  gap: 6px;
  margin: 10px 0;
  flex-wrap: wrap;
}

button {
  background: #202833;
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 6px 10px;
  font: inherit;
  cursor: pointer;
}
button:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}
button:disabled {
  opacity: 0.4;
  cursor: default;
}

#run {
  background: #24405f;
}

.status {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  white-space: pre-wrap;
}
.status.ok {
  color: var(--ok);
}
.status.err {
  color: var(--err);
}

#output {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.tabs {
  display: flex;
  border-bottom: 1px solid var(--line);
}
.tab {
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: none;
}
.tab.active {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

.pane {
  display: none;
  flex: 1;
  overflow: auto;
  padding: 10px 14px;
}
.pane.active {
  display: block;
}

pre {
  margin: 0;
  white-space: pre;
  font-size: 12px;
  line-height: 1.45;
}

table {
  border-collapse: collapse;
  margin: 0 0 18px;
  font-size: 12px;
}
caption {
  text-align: left;
  color: var(--accent);
  padding: 6px 0;
  font-weight: bold;
}
th,
td {
  border: 1px solid var(--line);
  padding: 2px 8px;
  text-align: right;
  white-space: nowrap;
}
th {
  background: #1b2027;
  color: var(--muted);
}
td:first-child,
th:first-child {
  text-align: left;
}