:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5f6368;
  --border: #e2e2e2;
  --accent: #2563eb;
  --good: #16a34a;
  --warn: #d97706;
  --card-bg: #f8f9fa;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #f1f2f4;
    --muted: #9aa0a6;
    --border: #2c2f34;
    --card-bg: #1c1f24;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  line-height: 1.5;
}

.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.hero {
  text-align: center;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
}

.tagline {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 auto;
  max-width: 56ch;
}

.tagline code {
  font-family: var(--mono);
  font-size: 0.9em;
}

.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 1.75rem 1.25rem;
  text-align: center;
  background: var(--card-bg);
}

.drop-zone p {
  margin: 0.4rem 0 0.9rem;
  color: var(--muted);
}

.snapshot-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  text-align: left;
}

@media (max-width: 560px) {
  .snapshot-grid {
    grid-template-columns: 1fr;
  }
}

.snapshot-col label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 0.3rem;
}

.snapshot-col textarea {
  width: 100%;
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  resize: vertical;
}

#compare-button {
  margin-top: 1rem;
  padding: 0.6rem 1.1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

#compare-button:hover {
  filter: brightness(1.08);
}

.example-line {
  text-align: center;
  font-size: 0.95rem;
  opacity: 0.85;
  max-width: 50rem;
  margin: 0.9rem auto 0;
}

.link-button {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.link-button:hover {
  filter: brightness(1.3);
}

.link-button:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

.error {
  text-align: center;
  color: #dc2626;
  font-weight: 600;
}

.summary-card {
  display: flex;
  justify-content: center;
  gap: 2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  margin: 1.5rem 0 1rem;
  background: var(--card-bg);
}

.summary-stat {
  text-align: center;
}

.summary-number {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  text-transform: capitalize;
}

.summary-number.changed,
.summary-number.build-only { color: var(--warn); }
.summary-number.unchanged,
.summary-number.production { color: var(--good); }
.summary-number.inconclusive { color: #dc2626; }

.summary-label {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.report-actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.report-actions button {
  padding: 0.55rem 1rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
}

.report-actions button:hover {
  border-color: var(--accent);
}

.table-wrap {
  font-size: 0.9rem;
}

.change-list {
  padding-left: 1.25rem;
}

.change-list code {
  font-family: var(--mono);
  font-size: 0.85em;
}

.change-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
}

.change-table th,
.change-table td {
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
}

.change-table code {
  font-family: var(--mono);
  font-size: 0.85em;
}

.change-table .status-added,
.change-table .status-changed { color: var(--warn); font-weight: 600; }
.change-table .status-removed { color: #dc2626; font-weight: 600; }
.change-table .status-unchanged { color: var(--good); }

.reason {
  color: var(--muted);
}

.disclaimer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
}

.disclaimer h2 {
  font-size: 1rem;
  color: var(--fg);
}

.disclaimer code {
  font-family: var(--mono);
  font-size: 0.9em;
}

.footer {
  margin-top: 2rem;
  text-align: left;
  font-size: 0.85rem;
  color: var(--muted);
}

.footer p {
  margin: 0.75rem 0;
}

.privacy {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0.75rem 0;
}