:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #666;
  --accent: #2563eb;
  --danger: #b91c1c;
  --ok: #15803d;
  --border: #d4d4d4;
  --panel: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --fg: #e6e6e6;
    --muted: #9a9a9a;
    --accent: #7aa2f7;
    --danger: #f87171;
    --ok: #4ade80;
    --border: #3a3f4b;
    --panel: #1f232b;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, sans-serif;
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

.tagline, .muted { color: var(--muted); }

.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 3rem 1rem;
  text-align: center;
  cursor: pointer;
  background: var(--panel);
}

.drop-zone:hover, .drop-zone:focus-visible, .drop-zone.drag {
  border-color: var(--accent);
  outline: none;
}

#status.error { color: var(--danger); }
#status.ok { color: var(--ok); }

.file-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.file-header h2 { margin-bottom: 0.25rem; }
.file-header p { margin-top: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}

th, td {
  text-align: left;
  padding: 0.35rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

tr:last-child td { border-bottom: none; }
th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.ithkul td { color: var(--danger); font-weight: 600; }

.form-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem 0.75rem;
  align-items: baseline;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

.scope { display: grid; gap: 0.4rem; }
.scope label { display: block; }

select, input[type="text"], input[type="number"] {
  font: inherit;
  color: inherit;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.2rem 0.4rem;
}

button {
  font: inherit;
  color: var(--bg);
  background: var(--accent);
  border: none;
  border-radius: 6px;
  padding: 0.45rem 1rem;
  cursor: pointer;
}

button:disabled { opacity: 0.5; cursor: default; }
#backup-btn { background: var(--panel); color: var(--fg); border: 1px solid var(--border); }

.actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.inspector {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

.search-row {
  display: flex;
  gap: 0.5rem;
}

.search-row input { flex: 1; }

#planet-results h4 {
  margin: 1rem 0 0.35rem;
}

.region-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.15rem 0;
  font-variant-numeric: tabular-nums;
}

.region-row input { width: 7.5rem; }
.region-row.changed input,
#empire-table tr.changed input {
  border-color: var(--accent);
  outline: 1px solid var(--accent);
}

#empire-table input { width: 9rem; text-align: right; }

#turn-row input { width: 6rem; }

#plan-result {
  margin-top: 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
}

#plan-list {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  max-height: 16rem;
  overflow-y: auto;
  font-variant-numeric: tabular-nums;
}

footer {
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.875rem;
}

code {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 0.25rem;
}

a { color: var(--accent); }