:root {
  font-family: Arial, Helvetica, sans-serif;
  color: #111;
  background: linear-gradient(180deg, #f5f7ff, #ffffff);
}

body {
  margin: 0;
  padding: 20px;
  min-height: 100vh;
  box-sizing: border-box;
}

.card {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  border-radius: 12px;
  background: white;
  box-shadow: 0 6px 24px rgba(0,0,0,.08);
}

input[type="file"] {
  margin-top: 8px;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 10px 18px;
  background: #3154d6;
  color: white;
  font-weight: 700;
  cursor: pointer;
}

.download-link {
  display: inline-flex;
  align-items: center;
  margin: 0 0 18px;
  border-radius: 10px;
  padding: 10px 18px;
  background: #147a45;
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.download-link:hover,
.download-link:focus-visible {
  background: #0f6036;
}

#preview {
  display: block;
  margin-top: 12px;
  max-width: 320px;
  max-height: 320px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.result-grid article {
  border: 1px solid #dde2ee;
  border-radius: 12px;
  padding: 14px;
}

.result-grid h2 {
  margin: 0;
  font-size: 18px;
}

.result-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.copy-button {
  flex: 0 0 auto;
  padding: 7px 12px;
  border: 1px solid #3154d6;
  background: #fff;
  color: #3154d6;
  font-size: 13px;
}

.copy-button:disabled {
  border-color: #b8c0d4;
  color: #7b8499;
  cursor: not-allowed;
  opacity: .7;
}

#ocr {
  white-space: pre-wrap;
}

.confidence {
  color: #3154d6;
  font-weight: 700;
}

#json:not([hidden]) {
  background: #0f172a;
  color: #e2e8f0;
  padding: 12px;
  border-radius: 8px;
  overflow: auto;
  white-space: pre-wrap;
}

@media (max-width: 640px) {
  body { padding: 10px; }
  .card { padding: 16px; }
  .result-grid { grid-template-columns: 1fr; }
}