:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-alt: #eef2f6;
  --text: #18202a;
  --muted: #5d6875;
  --border: #d9e0e8;
  --primary: #166534;
  --primary-hover: #14532d;
  --accent: #0f766e;
  --danger: #b42318;
  --code: #101828;
  --shadow: 0 16px 42px rgba(24, 32, 42, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.nav a,
.button,
button {
  min-height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  padding: 9px 13px;
  text-decoration: none;
  cursor: pointer;
}

.nav a[aria-current="page"],
.button.primary,
button.primary {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

button:hover,
.button:hover,
.nav a:hover {
  border-color: var(--primary);
}

.button.primary:hover,
button.primary:hover {
  background: var(--primary-hover);
}

.hero {
  padding: 34px 0 24px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 760;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 14px;
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 10px;
  font-size: 24px;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

p {
  color: var(--muted);
  line-height: 1.65;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.grid {
  display: grid;
  gap: 18px;
}

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

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: 20px;
  align-items: start;
}

.panel {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 20px;
}

.content-stack {
  display: grid;
  gap: 18px;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  border-radius: 8px;
  background: var(--surface-alt);
  padding: 14px;
}

.metric strong {
  display: block;
  margin-top: 4px;
  font-size: 24px;
}

.sdk-panel {
  display: grid;
  gap: 14px;
}

.detector-video {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #111827;
  object-fit: cover;
}

.sdk-panel label {
  display: grid;
  gap: 7px;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.sdk-panel input,
.sdk-panel textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  padding: 10px 11px;
}

.sdk-panel textarea {
  min-height: 120px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 13px;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 650;
}

.checkbox-row input {
  width: 16px;
  height: 16px;
}

.status {
  border-radius: 8px;
  background: var(--surface-alt);
  padding: 10px 12px;
  color: var(--muted);
  font-size: 13px;
}

.status.ready {
  color: var(--primary);
}

.status.error {
  color: var(--danger);
}

.log {
  display: grid;
  gap: 8px;
  max-height: 260px;
  overflow: auto;
  margin: 0;
  padding: 0;
  list-style: none;
}

.log li {
  border-left: 3px solid var(--accent);
  background: #f8fafc;
  padding: 8px 10px;
  color: var(--code);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  line-height: 1.45;
  word-break: break-word;
}

.route-view {
  min-height: 280px;
}

.route-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.route-links a {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  padding: 9px 12px;
  text-decoration: none;
}

.route-links a.active {
  border-color: var(--primary);
  background: #dcfce7;
}

@media (max-width: 820px) {
  .topbar,
  .layout {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: flex-start;
  }

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