:root {
  --bg: #f4f4f5;
  --card: #ffffff;
  --text: #18181b;
  --muted: #71717a;
  --line: #e4e4e7;
  --accent: #18181b;
  --accent-text: #fafafa;
  --error: #b91c1c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #09090b;
    --card: #18181b;
    --text: #fafafa;
    --muted: #a1a1aa;
    --line: #27272a;
    --accent: #fafafa;
    --accent-text: #18181b;
    --error: #f87171;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

main {
  width: 100%;
  max-width: 400px;
  padding: 32px 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  text-align: center;
}

h1 {
  margin: 0 0 8px;
  font-size: 22px;
  line-height: 1.25;
}

p {
  margin: 0 0 16px;
  color: var(--muted);
}

.qr {
  display: block;
  width: 220px;
  height: 220px;
  margin: 8px auto 20px;
  padding: 10px;
  background: #ffffff;
  border-radius: 12px;
  image-rendering: pixelated;
}

.button {
  display: block;
  width: 100%;
  padding: 14px 16px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: var(--accent-text);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.button.secondary {
  margin-top: 10px;
  background: transparent;
  color: var(--muted);
  font-weight: 500;
}

.status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 20px 0 0;
  font-size: 14px;
}

.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--line);
  border-top-color: var(--text);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.small {
  font-size: 13px;
}

.small a {
  color: inherit;
}

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

code {
  display: block;
  margin: 16px 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font: 14px ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--text);
  word-break: break-all;
  user-select: all;
}

ol {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  text-align: left;
}

[hidden] {
  display: none !important;
}