/* ===== Color Variables ===== */
:root {
  --bg: #fafafa;
  --text: #111827;
  --card: #ffffff;
  --border: #e5e7eb;
  --link: #2563eb;
}
/* Dark mode overrides */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --text: #e5e7eb;
    --card: #020617;
    --border: #1e293b;
    --link: #60a5fa;
  }
}
/* ===== Body / Layout ===== */
body {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: 2rem;
  max-width: 600px;
  margin: auto;
}
h1 {
  margin-bottom: 1rem;
  font-size: 1.75rem;
}
/* ===== Result Div ===== */
#result {
  display: none;
  /* hidden until scan starts */
  margin-top: 1.25rem;
  padding: 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background: var(--card);
  word-break: break-word;
  overflow-wrap: break-word;
  font-size: 1.25rem;
  text-align: center;
}
a {
  color: var(--link);
}
/* ===== Custom upload button ===== */
#customUpload {
  display: block;
  width: 100%;
  text-align: center;
  font-size: 1.25rem;
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
}
#fileName {
  margin-top: 1rem;
  font-size: 1.25rem;
  text-align: center;
  word-break: break-all;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
/* ===== Mobile adjustments ===== */
@media (max-width: 600px) {
  body {
    max-width: 100%;
    padding: 1rem;
  }
  h1 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 1.5rem;
  }
  #customUpload {
    font-size: 1.5rem;
    padding: 1.5rem;
    border-radius: 1rem;
    text-align: center;
  }
  #fileName {
    font-size: 1.5rem;
  }
  #result {
    font-size: 1.5rem;
    padding: 1.5rem;
    border-radius: 1rem;
    text-align: center;
  }
}