:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --border: #dde1e6;
  --text: #1c2026;
  --muted: #69707a;
  --accent: #2f6fed;
  --accent-soft: #e3ecfd;
  --bar: #c9d6f2;
  --error: #c62828;
  --error-soft: #fdecea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171b;
    --panel: #1e2126;
    --border: #33373e;
    --text: #e6e8eb;
    --muted: #9aa1ab;
    --accent: #6b9bff;
    --accent-soft: #24324d;
    --bar: #34466b;
    --error: #ff8a80;
    --error-soft: #3b2222;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 16px 24px 0;
}

h1 { font-size: 20px; margin: 0; }
h2 { font-size: 15px; margin: 0; }

main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
  padding: 16px 24px 32px;
}

@media (max-width: 900px) {
  main { grid-template-columns: minmax(0, 1fr); padding: 16px; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 14px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

label { display: block; font-weight: 600; margin-bottom: 6px; }
.help, .hint, .muted { color: var(--muted); }
.help { margin: 0 0 8px; font-size: 13px; }
.hint { font-size: 12px; }

input, select, textarea, button {
  font: inherit;
  color: inherit;
}

input, select, textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 9px;
}

textarea { resize: vertical; font-family: ui-monospace, Menlo, monospace; font-size: 13px; }

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

button {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
}

button:hover { border-color: var(--accent); }

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 8px 22px;
}

button:disabled { opacity: 0.6; cursor: progress; }

.add-buttons, .actions { display: flex; gap: 8px; flex-wrap: wrap; }

.question {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
  margin-bottom: 10px;
  display: grid;
  gap: 8px;
}

.question-head { display: flex; gap: 8px; align-items: center; }
.question-head .qid { flex: 1; font-family: ui-monospace, Menlo, monospace; }

.badge {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.remove { border: none; background: none; color: var(--muted); padding: 4px 8px; }
.remove:hover { color: var(--error); }

.options { display: grid; gap: 6px; }
.option-row { display: flex; gap: 6px; align-items: center; }
.option-row .level { color: var(--muted); font-size: 12px; min-width: 52px; }
.option-row .label { flex: 0 0 30%; }
.option-row .desc { flex: 1; }
.add-option { justify-self: start; font-size: 13px; padding: 4px 10px; }

.error { color: var(--error); margin: 6px 0 0; font-size: 13px; }
#status.error-box { background: var(--error-soft); color: var(--error); border-color: var(--error); white-space: pre-wrap; }

.meta { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13px; }
.meta b { font-weight: 600; }

.answer h3 {
  margin: 0 0 4px;
  font-size: 13px;
  font-family: ui-monospace, Menlo, monospace;
  color: var(--muted);
  font-weight: 500;
}

.answer .headline { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.answer .stats { color: var(--muted); font-size: 12px; margin-bottom: 10px; }

.bars { display: grid; gap: 4px; }

.bar-row {
  display: grid;
  grid-template-columns: minmax(80px, 35%) 1fr 52px;
  gap: 8px;
  align-items: center;
  font-size: 13px;
}

.bar-row .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-row .val { text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.bar-track { background: var(--bg); border-radius: 3px; height: 12px; overflow: hidden; }
.bar-fill { background: var(--bar); height: 100%; }
.bar-row.top .bar-fill { background: var(--accent); }
.bar-row.top .name { font-weight: 600; }

summary { cursor: pointer; font-weight: 600; }
pre { margin: 10px 0 0; overflow-x: auto; font-size: 12px; }
code { font-size: 12px; }

#tabs {
  display: flex;
  gap: 4px;
  padding: 14px 24px 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
}

.tab {
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 6px 6px 0 0;
  background: none;
  color: var(--muted);
  white-space: nowrap;
  margin-bottom: -1px;
}

.tab:hover { color: var(--text); border-color: transparent; }

.tab.active {
  background: var(--panel);
  border-color: var(--border);
  border-bottom: 1px solid var(--panel);
  color: var(--text);
  font-weight: 600;
}

.source {
  margin: 12px 24px 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  #tabs { padding: 12px 16px 0; }
  .source { margin: 12px 16px 0; }
}