:root,
[data-theme="dark"] {
  --bg: #24272d;
  --panel: #2c3038;
  --panel-2: #343943;
  --line: #3d434f;
  --text: #e8eaee;
  --muted: #a3abb9;
  --accent: #5aa0f2;
}

[data-theme="light"] {
  --bg: #eceef1;
  --panel: #f7f8fa;
  --panel-2: #e3e6ea;
  --line: #d2d6dd;
  --text: #1e2228;
  --muted: #5c6470;
  --accent: #2f6fd0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header, main, footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

header { padding-top: 72px; padding-bottom: 8px; position: relative; }

h1 { margin: 0 0 14px; font-size: 32px; line-height: 1.2; letter-spacing: -0.01em; }

header p { color: var(--muted); margin: 0; max-width: 620px; line-height: 1.6; }

header p + p { margin-top: 4px; }

header p.cta {
  margin-top: 18px;
  color: var(--text);
  font-size: 15px;
}

header p.cta a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

header p.cta a:hover { text-decoration: underline; text-underline-offset: 3px; }

header p:last-of-type { margin-bottom: 32px; }

h2 {
  font-size: 16px;
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge {
  background: var(--panel-2);
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 9px;
  font-size: 12px;
  font-weight: 500;
}

.switch {
  position: absolute;
  top: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  user-select: none;
}

.switch input { position: absolute; opacity: 0; width: 0; height: 0; }

.switch .track {
  width: 42px;
  height: 24px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  transition: background .15s;
  flex: none;
}

.switch .thumb {
  display: block;
  width: 18px;
  height: 18px;
  margin: 2px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateX(18px);
  transition: transform .15s;
}

.switch input:not(:checked) + .track .thumb { transform: translateX(0); }

.switch-label {
  font-size: 13px;
  color: var(--muted);
  width: 36px;
}

code {
  background: var(--panel-2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.dropzone {
  border: 1.5px dashed var(--line);
  border-radius: 12px;
  background: var(--panel);
  padding: 48px 24px;
  text-align: center;
  transition: border-color .15s, background .15s;
}

.dropzone.over {
  border-color: var(--accent);
  background: var(--panel-2);
}

.dropzone label { display: block; cursor: pointer; color: var(--muted); }

.dropzone label strong { color: var(--accent); }

.dropzone label span { display: block; font-size: 13px; margin-top: 6px; }

#sample-btn {
  margin-top: 14px;
  background: none;
  color: var(--accent);
  border: 0;
  padding: 0;
  font: inherit;
  font-weight: 700;
}

#sample-btn:hover { filter: none; text-decoration: underline; text-underline-offset: 3px; }

button {
  background: var(--accent);
  color: #fff;
  border: 0;
  padding: 9px 18px;
  border-radius: 7px;
  font-size: 14px;
  cursor: pointer;
}

button:hover { filter: brightness(1.08); }

.status {
  margin-top: 20px;
  padding: 12px 16px;
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--muted);
}

.status.error { color: #e0625f; }

#report > section { margin-top: 40px; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin: 28px 0 0;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  min-width: 0;
}

.card .k {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.card .v {
  font-size: 15px;
  margin-top: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  overflow-wrap: anywhere;
}

.toolbar {
  display: flex;
  gap: 12px;
  margin: 28px 0 0;
}

.toolbar input,
.toolbar select {
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 7px;
  font-size: 14px;
}

.toolbar input { flex: 1; min-width: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

th, td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  overflow-wrap: anywhere;
}

.struct-body > table:not(.struct) td:first-child { width: 40%; }
.struct-body > table:not(.struct) .num { white-space: nowrap; width: 1%; }

th {
  background: var(--panel-2);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; }

td .name { font-weight: 500; }

td .sub { color: var(--muted); font-size: 12px; margin-top: 3px; }

td .unit { color: var(--muted); font-size: 12px; margin-left: 4px; }

tbody tr.signal { cursor: pointer; }

tbody tr.signal:hover { background: var(--panel-2); }

tr:last-child td { border-bottom: 0; }

.history td { padding: 0; }

.history-inner { background: var(--panel-2); padding: 16px; }

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

.history-tabs { display: flex; gap: 8px; margin-bottom: 12px; }

.history-tabs button {
  background: var(--panel);
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 5px 12px;
  font-size: 13px;
}

.history-tabs button.active { color: #fff; background: var(--accent); border-color: var(--accent); }

.chart-box { height: 320px; }

.history-wrap { max-height: 320px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; }

.history-wrap table { border: 0; border-radius: 0; }

.history-wrap th { background: var(--panel); position: sticky; top: 0; }

.hint { color: var(--muted); font-size: 12px; margin: 0 0 14px; }

.struct-group {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-bottom: 10px;
  overflow: hidden;
}

.struct-group summary {
  cursor: pointer;
  padding: 12px 16px;
  font-weight: 500;
  list-style: none;
}

.struct-group summary::-webkit-details-marker { display: none; }

.struct-group summary::before { content: "▸ "; color: var(--muted); }

.struct-group[open] summary::before { content: "▾ "; }

.struct-group summary .muted { color: var(--muted); font-weight: 400; font-size: 12px; }

.struct-body { padding: 0 16px 16px; overflow-x: auto; }

table.struct { table-layout: auto; font-size: 13px; }

table.struct th,
table.struct td {
  white-space: nowrap;
  overflow-wrap: normal;
  text-overflow: ellipsis;
}

table.struct th {
  text-transform: none;
  letter-spacing: 0;
  cursor: default;
}

table.struct td.idx { color: var(--muted); font-variant-numeric: tabular-nums; }

table.struct.kv { width: auto; }

table.struct.kv > tbody > tr > th {
  width: 1%;
  white-space: nowrap;
  color: var(--muted);
  font-weight: 500;
  vertical-align: top;
}

table.struct table { margin: -4px 0; border: 0; }

table.struct table th { background: transparent; }

details.arr > summary {
  cursor: pointer;
  list-style: none;
  color: var(--accent);
  font-size: 12px;
  padding: 3px 0;
  user-select: none;
}

details.arr > summary::-webkit-details-marker { display: none; }

details.arr > summary::before { content: "▸ "; }

details.arr[open] > summary::before { content: "▾ "; }

details.arr > summary:hover { text-decoration: underline; }

details.arr[open] > summary { margin-bottom: 6px; }

.recs { display: flex; flex-direction: column; gap: 10px; }

.rec {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.rec-h {
  background: var(--panel-2);
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  padding: 5px 12px;
}

.rec-b { padding: 10px 12px; }

.rec-b > table.struct.kv { width: 100%; }

.rec-b .recs { margin-top: 4px; }

.kv-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
}

.kv-inline span { white-space: nowrap; }

.kv-inline b {
  color: var(--muted);
  font-weight: 500;
  margin-right: 5px;
}

.table-scroll { overflow-x: auto; max-width: 100%; }

footer {
  padding: 48px 24px;
  color: var(--muted);
  text-align: center;
}

footer a { color: var(--accent); text-decoration: none; }

@media (max-width: 640px) {
  header, main, footer { padding-left: 16px; padding-right: 16px; }

  header { padding-top: 56px; }

  h1 { font-size: 23px; }

  header p,
  header p.cta { font-size: 14px; max-width: none; }

  header p.cta a { white-space: normal; }

  .switch { top: 14px; right: 16px; }

  .switch-label { display: none; }

  #report > section { margin-top: 28px; }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 20px;
  }

  .card { padding: 12px; }

  .card .v { font-size: 14px; }

  .toolbar { flex-wrap: wrap; margin-top: 20px; }

  .toolbar input { flex: 1 1 100%; }

  .toolbar select { flex: 1 1 auto; }

  .toolbar button { flex: 0 0 auto; }

  th, td { padding: 8px 10px; }

  table { font-size: 13px; }

  .struct-body { padding: 0 12px 12px; -webkit-overflow-scrolling: touch; }

  /* signal rows become stacked cards instead of a cramped table */
  #signals-body > details > .struct-body > table,
  #signals-body > details > .struct-body > table > tbody,
  #signals-body > details > .struct-body > table > tbody > tr,
  #signals-body > details > .struct-body > table > tbody > tr > td {
    display: block;
    width: auto;
  }

  #signals-body > details > .struct-body > table > thead { display: none; }

  #signals-body > details > .struct-body > table > tbody > tr.signal {
    padding: 12px 4px;
    border-bottom: 1px solid var(--line);
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td {
    padding: 0;
    border: 0;
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td:first-child {
    margin-bottom: 7px;
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td:first-child * {
    overflow-wrap: normal;
    word-break: normal;
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td:first-child .name {
    font-size: 14px;
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td:not(:first-child) {
    display: inline-block;
    margin: 2px 16px 0 0;
    font-size: 13px;
    color: var(--text);
    text-align: left;
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td:nth-child(4),
  #signals-body > details > .struct-body > table > tbody > tr.signal > td:nth-child(5) {
    display: none;
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td::before {
    color: var(--muted);
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td:nth-child(2)::before {
    content: "Records: ";
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td:nth-child(3)::before {
    content: "Latest: ";
  }

  #signals-body > details > .struct-body > table > tbody > tr.signal > td:nth-child(6)::before {
    content: "Last seen: ";
  }

  #signals-body .sub.raw { display: none; }

  .chart-box { height: 240px; }

  .history-inner { padding: 12px; }

  .history-wrap { max-height: 260px; }

  table.struct { font-size: 12px; }
}