:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1c2024;
  --muted: #5d6670;
  --border: #dde1e6;
  --accent: #1f6feb;
  --accent-text: #ffffff;
  --error: #c9302c;
  --error-bg: #fdecea;
  --warning: #9a6700;
  --warning-bg: #fff4d6;
  --info: #3b5b85;
  --info-bg: #e8f0fb;
  --pass: #1a7432;
  --pass-bg: #dcf5e3;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --card: #1a1e23;
    --text: #e6e9ec;
    --muted: #9aa4ae;
    --border: #2d333b;
    --accent: #4c8dff;
    --accent-text: #0b0f14;
    --error: #ff7b72;
    --error-bg: #3a1d1c;
    --warning: #e3b341;
    --warning-bg: #352a10;
    --info: #8bb4ec;
    --info-bg: #1b2a3d;
    --pass: #56d364;
    --pass-bg: #15301e;
  }
}

* { box-sizing: border-box; }

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

.top, main, .foot { max-width: 1000px; margin: 0 auto; padding: 0 16px; }
.top { padding-top: 24px; }
h1 { margin: 0; font-size: 24px; }
.logo img { display: block; max-width: 100%; height: auto; }
.sub, .muted { color: var(--muted); }
.sub { margin: 4px 0 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}

.label { display: block; font-weight: 600; margin-bottom: 6px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.secondary-row { margin-top: 12px; }

input, select, button {
  font: inherit;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 10px;
}
#url { flex: 1 1 320px; min-width: 0; }
input::placeholder { color: var(--muted); opacity: 0.7; font-style: italic; }
button { cursor: pointer; }
button:disabled { opacity: 0.6; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
button.link { border: none; background: none; color: var(--accent); padding: 7px 4px; }

.file-button {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 10px;
  cursor: pointer;
}
.file-button input { display: none; }

.profiles { border: none; margin: 12px 0 0; padding: 0; min-width: 0; }
.profiles legend { padding: 0; }
#profileChoices { display: contents; }
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 4px 12px;
  cursor: pointer;
  font-size: 14px;
}
.toggle:has(input:checked) { border-color: var(--accent); background: var(--info-bg); }
.toggle input { margin: 0; padding: 0; }
.hint { margin: 6px 0 0; font-size: 13px; }

.options { margin-top: 12px; }
.options summary { cursor: pointer; color: var(--muted); }
.grid { display: grid; grid-template-columns: max-content 1fr; gap: 8px 12px; align-items: center; margin-top: 8px; }
.grid input { min-width: 0; }

.examples { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--border); }
.examples dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 2px 12px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.examples dd { margin: 0; }
.foot { padding-bottom: 24px; font-size: 13px; }
a { color: var(--accent); }

.history summary { cursor: pointer; font-weight: 600; }
.history summary .muted { font-weight: 400; }
#historyList { list-style: none; margin: 8px 0 0; padding: 0; max-height: 280px; overflow: auto; }
.history-item {
  display: grid;
  grid-template-columns: max-content max-content minmax(0, 1fr) max-content max-content;
  gap: 4px 12px;
  align-items: center;
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.history-item .when { color: var(--muted); font-variant-numeric: tabular-nums; }
.history-item .counts { display: flex; gap: 4px; }
.mini { border-radius: 10px; padding: 0 7px; font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; }
.mini.error { color: var(--error); background: var(--error-bg); }
.mini.warning { color: var(--warning); background: var(--warning-bg); }
.mini.info { color: var(--info); background: var(--info-bg); }
.mini.zero { opacity: 0.35; }
.mini.error.zero { color: var(--pass); background: var(--pass-bg); opacity: 1; }
.history-item .target { text-align: left; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding: 4px; }
.history-item button:not(.link) { padding: 2px 10px; font-size: 13px; }
.history-item .remove { border: none; color: var(--muted); padding: 2px 6px; }
.history .hint .link { padding: 0 4px; font-size: 13px; }

.progress { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
#bar { height: 100%; width: 0; background: var(--accent); transition: width 0.2s; }
#statusText { margin: 8px 0 0; }

.summary dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 0 0 12px; }
.summary dt { color: var(--muted); }
.summary dd { margin: 0; overflow-wrap: anywhere; }

.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { border-radius: 16px; padding: 4px 12px; font-weight: 600; }
.chip.error { color: var(--error); background: var(--error-bg); border-color: transparent; }
.chip.warning { color: var(--warning); background: var(--warning-bg); border-color: transparent; }
.chip.info { color: var(--info); background: var(--info-bg); border-color: transparent; }
.chip.error.pass { color: var(--pass); background: var(--pass-bg); }
.chip[aria-pressed="false"] { opacity: 0.4; }

.group { margin-bottom: 16px; }
.group h2 { font-size: 15px; margin: 0 0 6px; overflow-wrap: anywhere; }
.group h2 .muted { font-weight: 400; }

.finding {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 2px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  margin-bottom: 6px;
}
.sev { font-size: 12px; font-weight: 700; text-transform: uppercase; align-self: start; padding-top: 2px; }
.sev.error { color: var(--error); }
.sev.warning { color: var(--warning); }
.sev.info { color: var(--info); }
.rule { font-family: var(--mono); font-size: 13px; font-weight: 600; }
.msg { overflow-wrap: anywhere; }
.loc { grid-column: 2; color: var(--muted); font-size: 13px; font-family: var(--mono); overflow-wrap: anywhere; }
.ref { color: var(--muted); font-size: 13px; }
.hidden { display: none; }
.ok { color: var(--muted); }
.error-box { color: var(--error); background: var(--error-bg); border-radius: 6px; padding: 12px; }

dialog {
  width: min(900px, calc(100vw - 32px));
  max-height: calc(100vh - 64px);
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0;
}
dialog[open] { display: flex; flex-direction: column; overflow: hidden; }
dialog::backdrop { background: rgba(0, 0, 0, 0.4); }
.dialog-head { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.dialog-head h2 { margin: 0; }
#rulesFilter { flex: 1; min-width: 0; }
.dialog-head, .rules-groups { flex-shrink: 0; }
.rules-groups { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 16px; border-bottom: 1px solid var(--border); }
.rules-groups a {
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 10px;
}
.rules-groups a:hover { border-color: var(--accent); color: var(--accent); }
#rulesList { overflow: auto; padding: 0 16px 16px; }
#rulesList table { width: 100%; border-collapse: collapse; font-size: 14px; }
#rulesList td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
#rulesList td:first-child { font-family: var(--mono); white-space: nowrap; }
#rulesList tr.group th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--card);
  text-align: left;
  font-size: 15px;
  padding: 18px 8px 6px;
  border-bottom: 2px solid var(--text);
}
#rulesList tr.group .count { margin-left: 8px; color: var(--muted); font-weight: normal; font-size: 13px; }
#rulesList [hidden] { display: none !important; }

@media (max-width: 600px) {
  .rules-groups { flex-wrap: nowrap; overflow-x: auto; }
  .rules-groups a { white-space: nowrap; }
  #rulesList table, #rulesList tbody, #rulesList tr.group, #rulesList tr.group th { display: block; }
  #rulesList tr.rule-row { display: grid; grid-template-columns: 1fr auto; border-bottom: 1px solid var(--border); padding: 4px 0; }
  #rulesList tr.rule-row td { border: none; padding: 2px 8px; }
  #rulesList tr.rule-row td:first-child { white-space: normal; overflow-wrap: anywhere; }
  #rulesList tr.rule-row td:nth-child(3) { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  /* The filter gets its own row below the title and the close button. */
  .dialog-head { flex-wrap: wrap; }
  .dialog-head h2 { flex: 1; }
  #rulesFilter { order: 1; flex-basis: 100%; }
  .finding { grid-template-columns: 1fr; }
  .loc { grid-column: 1; }
  .grid { grid-template-columns: 1fr; }
  /* The time and the counts share the first row, the MPD the second. */
  .history-item { grid-template-columns: max-content minmax(0, 1fr) max-content max-content; }
  .history-item .target { grid-column: 1 / -1; grid-row: 2; }
}