:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f5f5f7;
  color: #1c1c1e;
}

.card {
  width: 100%;
  max-width: 360px;
  padding: 2rem;
  box-sizing: border-box;
  text-align: center;
}

h1 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

input[type="email"] {
  width: 100%;
  padding: 0.75rem;
  font-size: 1rem;
  box-sizing: border-box;
  border: 1px solid #c7c7cc;
  border-radius: 8px;
  margin-bottom: 1rem;
}

button {
  width: 100%;
  padding: 0.75rem;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background: #0071e3;
  color: white;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: default;
}

#scan-video {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 1rem;
  background: #000;
}

.message {
  margin-top: 1rem;
  font-size: 0.95rem;
}

.message.success {
  color: #1a7f37;
}

.message.error {
  color: #c62828;
}

.hidden {
  display: none;
}