:root {
  --bg: #f6f8fa;
  --panel: #ffffff;
  --border: #d0d7de;
  --text: #1f2328;
  --muted: #636c76;
  --accent: #0969da;
  --accent-soft: #ddf4ff;
  --green: #1a7f37;
  --red: #cf222e;
  --code: #f6f8fa;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
button, textarea { font: inherit; }
.topbar { min-height: 78px; padding: 14px 28px; background: #24292f; color: white; display: flex; align-items: center; justify-content: space-between; }
.topbar h1 { font-size: 20px; margin: 0; }
.eyebrow { margin: 0 0 3px; font-size: 11px; font-weight: 700; letter-spacing: .08em; color: #8c959f; }
.engine-badge { border: 1px solid #57606a; border-radius: 999px; padding: 5px 10px; color: #c9d1d9; font-size: 12px; }
.app-shell { max-width: 1500px; min-height: calc(100vh - 78px); margin: auto; display: grid; grid-template-columns: 230px minmax(0, 1fr); }
.steps { padding: 24px 14px; border-right: 1px solid var(--border); background: var(--panel); }
.step-title { color: var(--muted); font-weight: 600; padding: 0 10px 10px; }
.step { width: 100%; border: 0; background: transparent; display: grid; grid-template-columns: 28px 1fr; align-items: center; gap: 9px; padding: 8px 9px; border-radius: 6px; text-align: left; color: var(--muted); cursor: pointer; }
.step span { width: 24px; height: 24px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 50%; font-size: 11px; }
.step b { font-size: 13px; font-weight: 500; }
.step:hover { background: var(--bg); color: var(--text); }
.step.active { background: var(--accent-soft); color: #0550ae; }
.step.active span { background: var(--accent); color: white; border-color: var(--accent); }
.step.done span { background: var(--green); color: white; border-color: var(--green); }
.workspace { min-width: 0; padding: 28px 32px 88px; }
.workspace-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 18px; }
.workspace h2 { margin: 0 0 4px; font-size: 22px; }
.muted { color: var(--muted); margin: 0; }
.actions { display: flex; gap: 7px; flex-wrap: wrap; justify-content: flex-end; }
.button { border: 1px solid var(--border); border-radius: 6px; padding: 7px 12px; font-weight: 600; cursor: pointer; }
.button:disabled { opacity: .5; cursor: not-allowed; }
.button.primary { background: var(--green); border-color: rgba(27,31,36,.15); color: white; }
.button.secondary { background: var(--panel); color: var(--text); }
.panel, .card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; }
.panel { padding: 16px; }
.panel label { display: block; font-weight: 600; margin-bottom: 8px; }
textarea { width: 100%; min-height: 420px; padding: 14px; resize: vertical; border: 1px solid var(--border); border-radius: 6px; background: var(--code); color: var(--text); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
textarea:focus { outline: 2px solid rgba(9,105,218,.25); border-color: var(--accent); }
.text-meta { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; margin-top: 6px; }
.summary-strip { display: flex; gap: 10px; overflow-x: auto; margin: 0 0 16px; }
.metric { min-width: 135px; background: var(--panel); border: 1px solid var(--border); border-radius: 7px; padding: 10px 12px; }
.metric strong { display: block; font-size: 19px; }
.metric span { color: var(--muted); font-size: 12px; }
.hidden { display: none !important; }
.output { display: grid; gap: 12px; }
.card { padding: 15px; overflow: hidden; }
.card h3 { margin: 0 0 10px; font-size: 15px; }
.card details { border-top: 1px solid #eaeef2; padding: 8px 0; }
.card summary { cursor: pointer; font-weight: 600; }
.record-meta { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.tag { border: 1px solid var(--border); border-radius: 999px; padding: 2px 7px; color: var(--muted); font-size: 11px; }
.tag.right { color: var(--green); border-color: #4ac26b; background: #dafbe1; }
.tag.rejected { color: var(--red); border-color: #ff8182; background: #ffebe9; }
.codebox { white-space: pre-wrap; overflow-wrap: anywhere; padding: 10px; border-radius: 5px; background: var(--code); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { border-bottom: 1px solid #eaeef2; padding: 7px 8px; text-align: left; vertical-align: top; }
th { background: var(--bg); position: sticky; top: 0; }
.runbar { position: fixed; z-index: 5; left: max(calc((100vw - 1500px)/2 + 230px), 230px); right: max(calc((100vw - 1500px)/2), 0px); bottom: 0; min-height: 66px; padding: 12px 32px; border-top: 1px solid var(--border); background: rgba(255,255,255,.96); display: flex; align-items: center; justify-content: space-between; gap: 20px; }
@media (max-width: 800px) {
  .app-shell { grid-template-columns: 1fr; }
  .steps { display: flex; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--border); padding: 8px; }
  .step-title { display: none; }
  .step { min-width: 132px; }
  .workspace { padding: 20px 14px 90px; }
  .workspace-head { display: block; }
  .actions { margin-top: 14px; justify-content: flex-start; }
  .runbar { left: 0; right: 0; padding: 10px 14px; }
}