:root {
  color-scheme: light;
  --ink: #182025;
  --muted: #68717a;
  --line: #d9dee3;
  --panel: #ffffff;
  --page: #eef2f5;
  --accent: #1f6feb;
  --accent-ink: #ffffff;
  --ok: #128a52;
  --warn: #b26a00;
  --bad: #a83a32;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  width: min(860px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 40px 0;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: #121923;
  color: white;
  font-weight: 800;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  line-height: 1.1;
}

h2 {
  margin-top: 8px;
  font-size: 24px;
  line-height: 1.2;
}

p {
  color: var(--muted);
  line-height: 1.55;
}

.status {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--warn);
}

.dot.connected {
  background: var(--ok);
}

.dot.missing {
  background: var(--bad);
}

.dot.scanning {
  animation: pulse 1s infinite ease-in-out;
}

.panel {
  margin-top: 18px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 10px 28px rgba(18, 25, 35, 0.08);
}

.label {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0;
}

dt {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

dd {
  margin: 5px 0 0;
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 650;
}

.actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #f7f9fb;
  color: var(--ink);
  font: inherit;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.button[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

.small {
  margin-top: 14px;
  font-size: 14px;
}

.steps {
  display: grid;
  gap: 10px;
  margin: 20px 0;
}

.steps div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

code {
  display: block;
  margin-top: 8px;
  padding: 10px;
  overflow-x: auto;
  border-radius: 6px;
  background: #121923;
  color: #f4f7fb;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(0.85);
    opacity: 0.55;
  }
  50% {
    transform: scale(1.15);
    opacity: 1;
  }
}

@media (max-width: 720px) {
  .hero {
    align-items: flex-start;
    flex-direction: column;
  }

  dl {
    grid-template-columns: 1fr;
  }
}