* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f7f8fa;
  color: #1c1f23;
}

header {
  position: sticky;
  top: 0;
  background: white;
  border-bottom: 1px solid #e6e9ef;
  padding: 16px 20px;
  z-index: 10;
}

h1 {
  margin: 0 0 12px;
  font-size: 20px;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
}

.github-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: #1f2937;
}

.github-link svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.controls {
  display: flex;
  gap: 8px;
}

input,
button {
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid #cfd6e4;
}

input {
  flex: 1;
  min-width: 180px;
}

button {
  background: #101828;
  color: white;
  border: none;
  cursor: pointer;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px 28px;
}

#status {
  margin-bottom: 12px;
  color: #475467;
}

.cards {
  display: grid;
  gap: 14px;
}

.footer-actions {
  margin-top: 14px;
  display: flex;
  justify-content: center;
}

.hidden {
  display: none;
}

.card {
  background: white;
  border: 1px solid #e6e9ef;
  border-radius: 12px;
  padding: 14px;
}

.card-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: start;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.copy-link-btn {
  font-size: 12px;
  padding: 6px 8px;
  border-radius: 6px;
  background: #eef2f7;
  color: #344054;
  border: 1px solid #d0d7e2;
}

.claim {
  margin: 0;
  font-size: 17px;
}

.source-link {
  font-size: 13px;
  text-decoration: none;
}

.meta {
  margin-top: 4px;
  color: #475467;
  font-size: 12px;
}

.compare-grid {
  margin-top: 12px;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}

h3 {
  margin: 0 0 6px;
  font-size: 14px;
}

pre {
  margin: 8px 0 0;
  white-space: pre-wrap;
  line-height: 1.4;
  padding: 10px;
  border-radius: 8px;
  background: #f9fafb;
  border: 1px solid #eef2f7;
  max-height: 320px;
  overflow: auto;
}

@media (max-width: 900px) {
  .compare-grid {
    grid-template-columns: 1fr;
  }
}