:root {
  color-scheme: dark;
  --bg: #07090f;
  --bg-raised: #0c1019;
  --panel: rgba(13, 18, 29, 0.92);
  --panel-2: #111826;
  --panel-3: #172032;
  --text: #f2f7fb;
  --muted: #94a3b8;
  --subtle: #64748b;
  --border: rgba(148, 163, 184, 0.22);
  --border-strong: rgba(226, 232, 240, 0.34);
  --accent: #22d3ee;
  --accent-2: #facc15;
  --accent-3: #a3e635;
  --good: #4ade80;
  --warn: #f59e0b;
  --bad: #fb7185;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.36);
  --mono: "SFMono-Regular", "Cascadia Code", "Liberation Mono", Menlo, Consolas, monospace;
  --sans: "Aptos", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-family: var(--sans);
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(135deg, rgba(34, 211, 238, 0.13), transparent 32%),
    linear-gradient(225deg, rgba(250, 204, 21, 0.1), transparent 30%),
    linear-gradient(180deg, #07090f 0%, #0a0f18 42%, #090b10 100%);
  color: var(--text);
  line-height: 1.5;
  overflow-x: hidden;
}

.ambient-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.34;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, #000, transparent 78%);
}

.hero, main {
  position: relative;
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 30px;
  align-items: end;
  min-height: 440px;
  padding: 34px 0 26px;
}

.hero-copy { max-width: 780px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 52px;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(34, 211, 238, 0.55);
  border-radius: 8px;
  background: linear-gradient(145deg, rgba(34, 211, 238, 0.28), rgba(250, 204, 21, 0.16));
  color: var(--accent-2);
  font-family: var(--mono);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.2);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  font-weight: 800;
}

h1, h2, p { margin-top: 0; }

h1 {
  max-width: 720px;
  margin-bottom: 18px;
  font-size: clamp(2.9rem, 5.8vw, 5.7rem);
  line-height: 0.96;
  font-weight: 900;
}

h2 {
  margin-bottom: 14px;
  font-size: 0.92rem;
  font-weight: 850;
  text-transform: uppercase;
  color: #dbeafe;
}

h3 {
  margin: 14px 0 8px;
  color: #cbd5e1;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.lede {
  max-width: 680px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-visual {
  align-self: center;
  min-width: 0;
}

.scanner-shell {
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(23, 32, 50, 0.94), rgba(7, 9, 15, 0.94)),
    repeating-linear-gradient(0deg, transparent 0 8px, rgba(34, 211, 238, 0.05) 8px 9px);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.scanner-head {
  display: flex;
  gap: 7px;
  padding: 13px 15px;
  border-bottom: 1px solid var(--border);
  background: rgba(242, 247, 251, 0.04);
}

.scanner-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--subtle);
}

.scanner-dot:nth-child(1) { background: var(--bad); }
.scanner-dot:nth-child(2) { background: var(--warn); }
.scanner-dot:nth-child(3) { background: var(--good); }

.scanner-body {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 24px;
}

.scanner-ring {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid rgba(34, 211, 238, 0.45);
  border-radius: 50%;
  background:
    conic-gradient(from -90deg, var(--scanner-tone, var(--accent)) calc(var(--scanner-score, 0) * 1%), rgba(148, 163, 184, 0.1) 0),
    radial-gradient(circle at center, rgba(34, 211, 238, 0.2), rgba(34, 211, 238, 0.03) 62%, transparent 63%);
  transition: background 220ms ease, border-color 220ms ease;
}

.scanner-ring::before {
  transform: rotate(var(--scanner-angle, 0deg));
}

.scanner-ring::before,
.scanner-ring::after {
  content: "";
  position: absolute;
  inset: 22%;
  border: 1px solid rgba(242, 247, 251, 0.24);
  border-radius: inherit;
}

.scanner-ring::after {
  inset: 42%;
  background: #05070c;
}

.scanner-ring span {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--dot-color, var(--subtle));
  box-shadow: 0 0 18px color-mix(in srgb, var(--dot-color, var(--subtle)) 62%, transparent);
  transition: background 180ms ease, transform 220ms ease;
}

.scanner-ring span:nth-child(1) { transform: rotate(-42deg) translateX(62px); }
.scanner-ring span:nth-child(2) { transform: rotate(64deg) translateX(62px); }
.scanner-ring span:nth-child(3) { transform: rotate(155deg) translateX(62px); }
.scanner-ring span:nth-child(4) { transform: rotate(245deg) translateX(62px); }

.scanner-ring .dot-good { --dot-color: var(--good); }
.scanner-ring .dot-warn { --dot-color: var(--warn); }
.scanner-ring .dot-bad { --dot-color: var(--bad); }
.scanner-ring .dot-muted { --dot-color: var(--subtle); }

.scanner-low { --scanner-tone: var(--good); border-color: rgba(74, 222, 128, 0.72); }
.scanner-medium { --scanner-tone: var(--warn); border-color: rgba(245, 158, 11, 0.78); }
.scanner-high { --scanner-tone: var(--bad); border-color: rgba(251, 113, 133, 0.78); }
.scanner-pending { --scanner-tone: var(--accent); }

.scanner-readout {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px 12px;
  min-width: 0;
  font-family: var(--mono);
}

.scanner-readout span {
  min-width: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.76rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.scanner-readout strong {
  color: var(--accent-2);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

button {
  min-height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  padding: 10px 14px;
  cursor: pointer;
  font: inherit;
  font-weight: 780;
}

button:first-child {
  border-color: rgba(34, 211, 238, 0.55);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.28), rgba(163, 230, 53, 0.16));
}

button:hover:not(:disabled),
button:focus-visible {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.16);
}

button:disabled {
  opacity: 0.46;
  cursor: not-allowed;
}

main { padding-bottom: 60px; }

.panel {
  margin-bottom: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 20px;
  backdrop-filter: blur(16px);
}

.summary-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(142px, auto);
  gap: 20px;
  align-items: center;
  border-color: rgba(34, 211, 238, 0.34);
}

.summary-panel p { margin-bottom: 0; }

.grid {
  display: grid;
  gap: 16px;
}

.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.masonry {
  columns: 2 360px;
  column-gap: 16px;
}

.masonry > .panel {
  display: inline-block;
  width: 100%;
  margin: 0 0 16px;
  break-inside: avoid;
}

.score-card {
  min-width: 148px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--panel-3), #0a0f18);
  padding: 18px;
  text-align: center;
  font-family: var(--mono);
  font-size: 1.8rem;
  font-weight: 900;
}

.score-card small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.68rem;
  text-transform: uppercase;
}

.score-card.low { border-color: rgba(74, 222, 128, 0.7); color: var(--good); }
.score-card.medium { border-color: rgba(245, 158, 11, 0.74); color: var(--warn); }
.score-card.high { border-color: rgba(251, 113, 133, 0.78); color: var(--bad); }
.score-card.pending { color: var(--muted); font-size: 1rem; }

.muted { color: var(--muted); }

.list {
  display: grid;
  gap: 8px;
}

.reason {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel-2);
  padding: 10px 12px;
}

.reason strong {
  display: block;
  color: #e2e8f0;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.reason span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.9rem;
}

.reason-evidence {
  display: grid;
  gap: 6px;
  margin: 10px 0 0;
}

.reason-evidence div {
  display: grid;
  grid-template-columns: minmax(126px, 0.42fr) 1fr;
  gap: 8px;
  border-top: 1px solid rgba(148, 163, 184, 0.14);
  padding-top: 6px;
}

.reason-evidence dt,
.reason-evidence dd {
  min-width: 0;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.76rem;
  word-break: break-word;
}

.reason-evidence dt {
  color: var(--subtle);
  font-weight: 800;
}

.reason-evidence dd {
  color: #dbeafe;
}

.reason-evidence .is-alert dd {
  color: var(--warn);
}

.kv {
  display: grid;
  grid-template-columns: minmax(150px, 0.7fr) 1fr;
  gap: 8px 12px;
  align-items: start;
}

.kv div:nth-child(odd) {
  color: var(--muted);
  font-weight: 700;
}

.kv code,
pre,
td code {
  font-family: var(--mono);
}

.kv code { word-break: break-word; }

.visual-block,
.surface-grid {
  display: grid;
  gap: 14px;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.metric-row span,
.metric-row strong {
  min-width: 0;
  border: 1px solid var(--border);
  background: rgba(7, 9, 15, 0.36);
  padding: 7px 9px;
  font-family: var(--mono);
  font-size: 0.74rem;
  word-break: break-word;
}

.metric-row span {
  color: var(--muted);
  font-weight: 800;
}

.metric-row strong {
  color: #e2e8f0;
  font-weight: 750;
}

.memory-chart {
  display: grid;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(242, 247, 251, 0.04), transparent),
    repeating-linear-gradient(0deg, rgba(148, 163, 184, 0.08) 0 1px, transparent 1px 25%);
  padding: 12px;
}

.chart-head,
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.chart-head strong {
  color: #e2e8f0;
  text-transform: uppercase;
}

.memory-chart svg {
  width: 100%;
  min-height: 180px;
  overflow: visible;
}

.memory-chart line {
  stroke: rgba(148, 163, 184, 0.16);
  stroke-width: 0.35;
}

.memory-chart polyline {
  fill: none;
  stroke-width: 1.3;
  vector-effect: non-scaling-stroke;
}

.memory-chart .line-used {
  stroke: var(--accent);
}

.memory-chart .line-total {
  stroke: var(--bad);
}

.chart-legend span::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 3px;
  margin-right: 6px;
  vertical-align: middle;
  background: currentColor;
}

.chart-legend .line-used { color: var(--accent); }
.chart-legend .line-total { color: var(--bad); }

.chart-legend code {
  flex: 1 1 100%;
  color: #cbd5e1;
}

.timeline-bars {
  display: grid;
  gap: 5px;
  max-height: 620px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(7, 9, 15, 0.32);
  padding: 10px;
}

.timeline-row {
  display: grid;
  grid-template-columns: minmax(130px, 0.45fr) minmax(0, 1fr);
  gap: 8px;
  align-items: center;
}

.timeline-track {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.16);
}

.timeline-track span {
  position: absolute;
  top: 0;
  bottom: 0;
  border-radius: inherit;
  background: var(--accent);
}

.timeline-paint .timeline-track span { background: var(--bad); }
.timeline-navigation .timeline-track span { background: var(--good); }
.timeline-mark .timeline-track span { background: var(--accent-2); }

.timeline-row code {
  overflow: hidden;
  color: #cbd5e1;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chip-cloud,
.check-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip-cloud span,
.check-grid span {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(17, 24, 38, 0.78);
  color: #dbeafe;
  padding: 5px 7px;
  font-family: var(--mono);
  font-size: 0.68rem;
}

.check-grid span {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
}

.check-grid strong { color: var(--muted); }
.check-grid .is-good { border-color: rgba(74, 222, 128, 0.46); }
.check-grid .is-good strong { color: var(--good); }
.check-grid .is-bad { border-color: rgba(251, 113, 133, 0.5); }
.check-grid .is-bad strong { color: var(--bad); }
.check-grid .is-missing { border-color: rgba(148, 163, 184, 0.18); color: var(--muted); }

.sensor-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 190px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    radial-gradient(circle at center, rgba(34, 211, 238, 0.11), transparent 46%),
    linear-gradient(180deg, rgba(242, 247, 251, 0.04), rgba(7, 9, 15, 0.24));
}

.sensor-device {
  width: 42px;
  height: 74px;
  border: 1px solid rgba(34, 211, 238, 0.72);
  border-radius: 8px;
  background: linear-gradient(160deg, rgba(34, 211, 238, 0.68), rgba(163, 230, 53, 0.2));
  box-shadow: 0 12px 38px rgba(34, 211, 238, 0.2);
  transform: rotateX(calc(var(--tilt-y) * 35deg)) rotateZ(calc(var(--tilt-x) * 45deg));
}

.sensor-axis {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 170px;
  height: 2px;
  transform-origin: left center;
  background: rgba(250, 204, 21, 0.7);
}

.sensor-axis-y {
  width: 130px;
  background: rgba(34, 211, 238, 0.74);
  transform: rotate(135deg);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(7, 9, 15, 0.35);
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

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

th {
  color: #cbd5e1;
  font-size: 0.78rem;
  text-transform: uppercase;
}

td {
  color: #dbeafe;
  font-size: 0.94rem;
}

.compact-table th,
.compact-table td {
  padding: 8px 10px;
  font-size: 0.82rem;
}

a {
  color: var(--accent);
  text-underline-offset: 3px;
}

.status-pill {
  display: inline-block;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel-2);
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 0.74rem;
}

.status-supported,
.status-partial,
.status-checked,
.status-aligned { border-color: var(--good); color: var(--good); }

.status-disabled,
.status-requires_js,
.status-differs { border-color: var(--warn); color: var(--warn); }

.status-missing { border-color: var(--subtle); color: var(--muted); }

pre {
  max-height: 620px;
  margin: 0;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #05070a;
  padding: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}

.toggle-panel summary {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 2px 10px;
  align-items: center;
  cursor: pointer;
  color: #dbeafe;
  font-weight: 850;
  text-transform: uppercase;
  list-style: none;
}

.toggle-panel summary::-webkit-details-marker {
  display: none;
}

.summary-icon {
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(34, 211, 238, 0.44);
  border-radius: 8px;
  background: rgba(34, 211, 238, 0.1);
}

.summary-icon::before {
  content: "+";
  color: var(--accent);
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 900;
  line-height: 1;
}

.toggle-panel[open] .summary-icon::before {
  content: "-";
}

.toggle-panel summary small {
  grid-column: 2;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 650;
  text-transform: none;
}

.toggle-panel[open] summary {
  margin-bottom: 14px;
}

.challenge-panel {
  overflow: hidden;
}

.challenge-form {
  display: grid;
  gap: 16px;
  max-width: 780px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
  color: #e2e8f0;
  font-weight: 760;
}

.choice-fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}

legend {
  color: #dbeafe;
  font-weight: 800;
  padding: 0 6px;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.choice,
.check-field {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #e2e8f0;
  font-weight: 700;
}

.choice {
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(17, 24, 38, 0.72);
  padding: 10px 12px;
}

.check-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  padding: 9px 10px;
  font: inherit;
  accent-color: var(--accent);
}

input:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.14);
}

input[type="checkbox"],
input[type="radio"] {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

input[type="checkbox"] {
  border-radius: 4px;
}

.challenge-table input {
  max-width: 210px;
}

.challenge-table .is-verified {
  background: rgba(74, 222, 128, 0.06);
}

.challenge-table .is-verified td:first-child {
  color: var(--good);
}

.hidden { display: none; }

#challengeTableWrap { margin-top: 16px; }

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-top: 26px;
  }

  .brand { margin-bottom: 38px; }

  .hero-visual { max-width: 520px; }

  .scanner-body { grid-template-columns: 130px minmax(0, 1fr); }

  .choice-grid,
  .check-list,
  .grid.two { grid-template-columns: 1fr; }

  .masonry { columns: 1; }
}

@media (max-width: 640px) {
  .hero,
  main { width: min(100vw - 24px, 1180px); }

  h1 { font-size: clamp(2.45rem, 12vw, 3.8rem); }

  .summary-panel { grid-template-columns: 1fr; }

  .score-card {
    min-width: 0;
    width: 100%;
  }

  .scanner-body {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .scanner-ring {
    width: 150px;
    justify-self: center;
  }

  .actions button { flex: 1 1 160px; }

  .form-grid { grid-template-columns: 1fr; }

  .kv { grid-template-columns: 1fr; }

  .kv div:nth-child(even) { margin-bottom: 8px; }

  .metric-row,
  .timeline-row {
    grid-template-columns: 1fr;
  }
}