:root {
  --bg: #0c1117;
  --surface: #141c25;
  --surface-soft: #182330;
  --text: #edf3f7;
  --muted: #9eb0bf;
  --line: rgba(237, 243, 247, 0.12);
  --accent: #88d498;
  --accent-strong: #4dc7b6;
  --danger: #ff9b85;
  --warn: #ffd36b;
  --radius: 16px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.26);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(136, 212, 152, 0.18), transparent 24rem),
    radial-gradient(circle at top right, rgba(77, 199, 182, 0.15), transparent 28rem),
    linear-gradient(180deg, #0b0f14 0%, #10141a 100%);
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
}

button,
textarea,
select {
  font: inherit;
}

.shell {
  width: min(1180px, calc(100% - 1.5rem));
  margin: 0 auto;
}

.hero {
  padding: 2rem 0 1rem;
}

.back-link,
button,
select {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.back-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 0.95rem;
  text-decoration: none;
}

.eyebrow {
  margin: 1rem 0 0;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin: 0.35rem 0 0.7rem;
  font-size: clamp(2.2rem, 5vw, 4.1rem);
  line-height: 0.98;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.03rem;
}

.hero-actions,
.panel-head,
.summary-grid {
  display: flex;
  gap: 0.75rem;
}

.hero-actions {
  flex-wrap: wrap;
  margin-top: 1.15rem;
}

button,
select {
  min-height: 44px;
  padding: 0 0.95rem;
  cursor: pointer;
}

button.primary {
  color: #081014;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  font-weight: 700;
}

button.ghost {
  min-height: 36px;
  padding-inline: 0.8rem;
}

.layout {
  display: grid;
  gap: 1rem;
  padding: 0.5rem 0 2rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(20, 28, 37, 0.96), rgba(24, 35, 48, 0.84));
  box-shadow: var(--shadow);
}

.editors {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding: 1rem;
}

.panel-head {
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.panel-head.stacked {
  align-items: flex-end;
  flex-wrap: wrap;
}

.panel-head p,
.filter-control {
  color: var(--muted);
}

textarea {
  width: 100%;
  min-height: 380px;
  padding: 1rem;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(8, 12, 16, 0.75);
  font-family: "IBM Plex Mono", "Consolas", monospace;
  font-size: 0.92rem;
  line-height: 1.55;
  resize: vertical;
}

.summary-panel,
.results-panel {
  padding: 1rem;
}

.filter-control {
  display: grid;
  gap: 0.35rem;
  min-width: 190px;
}

.summary-grid {
  flex-wrap: wrap;
}

.summary-grid article {
  flex: 1 1 150px;
  padding: 0.95rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
}

.summary-grid h3 {
  margin-bottom: 0.35rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.summary-grid p {
  margin-bottom: 0;
  font-size: 1.8rem;
  font-weight: 700;
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 0.85rem 0.7rem;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

thead th {
  border-top: 0;
  color: var(--muted);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

tbody tr[data-status="added"] td:nth-child(2) {
  color: var(--accent);
}

tbody tr[data-status="removed"] td:nth-child(2) {
  color: var(--danger);
}

tbody tr[data-status="type-changed"] td:nth-child(2) {
  color: var(--warn);
}

code {
  font-family: "IBM Plex Mono", "Consolas", monospace;
  font-size: 0.83rem;
}

.empty-row {
  color: var(--muted);
  text-align: center;
}

@media (max-width: 780px) {
  .editors {
    grid-template-columns: 1fr;
  }

  textarea {
    min-height: 280px;
  }
}