:root {
  color-scheme: light;
  --bg: #f3f4f1;
  --ink: #20242b;
  --muted: #68717c;
  --line: #d5d9d1;
  --panel: #ffffff;
  --panel-soft: #f8f9f5;
  --green: #16744f;
  --blue: #2859c5;
  --amber: #a45d12;
  --red: #b42318;
  --shadow: 0 14px 34px rgba(32, 36, 43, 0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.45;
}
button, input, select, textarea { font: inherit; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  background: #fbfcf8;
  position: sticky;
  top: 0;
  z-index: 2;
}
h1, h2, p { margin: 0; }
h1 { font-size: clamp(1.25rem, 2vw, 1.7rem); letter-spacing: 0; }
h2 { font-size: 0.94rem; letter-spacing: 0; }
.topbar p { color: var(--muted); margin-top: 3px; max-width: 820px; }
.status-strip {
  min-width: 118px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 12px;
  text-align: center;
  background: #edf7f1;
  color: var(--green);
  font-weight: 800;
}
.status-strip.warn { background: #fff4e5; color: var(--amber); }
.workspace {
  display: grid;
  grid-template-columns: minmax(380px, 0.95fr) minmax(430px, 1.05fr);
  gap: 18px;
  padding: 18px;
  max-width: 1520px;
  margin: 0 auto;
}
.editor, .preview { display: grid; gap: 14px; align-content: start; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 14px;
}
.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.panel-heading span { color: var(--muted); font-size: 0.86rem; }
.grid { display: grid; gap: 12px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.span-two { grid-column: 1 / -1; }
label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-soft);
  color: var(--ink);
  padding: 9px 10px;
  outline: none;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(40, 89, 197, 0.14);
}
.destination-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.destination-grid label {
  grid-template-columns: 18px 1fr;
  align-items: center;
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-soft);
  color: var(--ink);
  padding: 8px;
}
.destination-grid input { width: 16px; height: 16px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
button {
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  padding: 9px 12px;
  font-weight: 800;
  cursor: pointer;
}
button[type="button"] { background: #eef0ea; border-color: var(--line); color: var(--ink); }
button:hover { filter: brightness(0.97); }
.checks, .artifacts { display: grid; gap: 8px; }
.check-row, .artifact-row {
  display: grid;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
  background: var(--panel-soft);
}
.check-row strong, .artifact-row strong {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.9rem;
}
.badge {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 0.75rem;
  color: #fff;
  background: var(--green);
}
.badge.warn { background: var(--amber); }
.badge.danger { background: var(--red); }
.check-row p, .artifact-row p { color: var(--muted); font-size: 0.86rem; }
pre, #jsonOutput {
  width: 100%;
  min-height: 88px;
  overflow: auto;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #1f2933;
  color: #edf2f7;
  padding: 11px;
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 0.82rem;
}
#jsonOutput { min-height: 430px; resize: vertical; }
.json-panel { min-width: 0; }
@media (max-width: 1020px) {
  .workspace { grid-template-columns: 1fr; }
  .topbar { position: static; }
}
@media (max-width: 680px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .workspace { padding: 12px; }
  .grid.two, .destination-grid { grid-template-columns: 1fr; }
  .span-two { grid-column: auto; }
  .actions button { flex: 1 1 150px; }
}