*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #0f0f1a;
  color: #e0e0e0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

main { width: 100%; max-width: 480px; padding: 24px; }

.hero { text-align: center; }

h1 { font-size: 2rem; color: #ffffff; margin-bottom: 8px; }

.subtitle { color: #a0a0b0; margin-bottom: 32px; }

#scan-form {
  background: #1a1a2e;
  border: 1px solid #2a2a4a;
  border-radius: 12px;
  padding: 28px;
  text-align: left;
}

.field { margin-bottom: 16px; }

label { display: block; font-size: 14px; color: #a0a0b0; margin-bottom: 6px; }

input {
  width: 100%;
  background: #0f0f1a;
  border: 1px solid #2a2a4a;
  border-radius: 8px;
  color: #e0e0e0;
  font-size: 16px;
  padding: 12px 14px;
  transition: border-color 0.2s;
}

input:focus { outline: none; border-color: #4a6cf7; }

button {
  width: 100%;
  background: #4a6cf7;
  border: none;
  border-radius: 8px;
  color: white;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  padding: 14px;
  margin-top: 8px;
  transition: background 0.2s;
}

button:hover:not(:disabled) { background: #3a5ce6; }
button:disabled { opacity: 0.6; cursor: not-allowed; }

#form-message { margin-top: 12px; font-size: 14px; padding: 10px; border-radius: 6px; }
.hidden { display: none; }
.success { display: block; background: #1a3a2a; color: #4caf7d; }
.error   { display: block; background: #3a1a1a; color: #f47474; }