body {
  margin: 0;
  font-family: var(--os-font-body, system-ui, sans-serif);
  background: var(--os-paper, #fff);
  color: var(--os-ink, #111);
}

.screen {
  max-width: 420px;
  margin: 0 auto;
  padding: 1.25rem;
}

.hidden {
  display: none !important;
}

video {
  width: 100%;
  border: 1px solid #ddd;
  border-radius: 8px;
  background: #000;
}

.button {
  background: var(--os-amber, #2563eb);
  color: #fff;
  border: none;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  margin-top: 0.5rem;
}

.button.secondary {
  background: #fff;
  color: #111;
  border: 1px solid #ddd;
}

.error {
  color: #b91c1c;
}

.muted {
  color: #666;
}

#result-title.ok {
  color: #047857;
}

#result-title.bad {
  color: #b91c1c;
}

input {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 6px;
}

.banner {
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}
.banner.ok {
  background: #e6f4ea;
  color: #137333;
}
.banner.warn {
  background: #fef7e0;
  color: #8a6d00;
}

.platform-footer {
  max-width: 420px;
  margin: 0 auto;
  padding: 0 1.25rem 1.5rem;
  font-size: 0.8rem;
  color: #666;
  text-align: center;
}

.platform-footer a {
  color: #2563eb;
  text-decoration: none;
}