:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --border: #dde1e6;
  --text: #1c2128;
  --muted: #5c6672;
  --accent: #2456d6;
  --accent-ink: #ffffff;
  --ok: #1f8a4c;
  --warn: #b26a00;
  --danger: #b3261e;
  --code-bg: #f0f2f5;
  --radius: 8px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216; --panel: #171b21; --border: #2a313a; --text: #e6e9ee; --muted: #9aa4b1;
    --accent: #6b95ff; --accent-ink: #0f1216; --code-bg: #10141a;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font: 14px/1.45 var(--font); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 1px solid var(--border); background: var(--panel); border-radius: var(--radius); padding: 6px 12px; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.secondary { border-color: var(--accent); color: var(--accent); }
button.ghost { background: transparent; }
button.danger { color: var(--danger); }
button:disabled { opacity: .5; cursor: default; }
input, select, textarea { width: 100%; padding: 6px 8px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); }
textarea { resize: vertical; }
.mono, pre, code { font-family: var(--mono); font-size: 12.5px; }
label { display: block; font-weight: 500; }
label > input, label > select, label > textarea { margin-top: 4px; font-weight: 400; }
label.inline { display: inline-flex; align-items: center; gap: 6px; font-weight: 400; }
label.inline > input { width: auto; margin: 0; }
h1, h2, h3 { margin: 0 0 6px; font-weight: 600; }
h2 { font-size: 18px; } h3 { font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.muted { color: var(--muted); margin: 0; }
.error { color: var(--danger); margin: 8px 0 0; }
[hidden] { display: none !important; }

/* Login */
.login { min-height: 100%; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(380px, 100%); background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 28px; display: grid; gap: 10px; }

/* Workspace */
.workspace { min-height: 100%; display: flex; flex-direction: column; }
.topbar { display: flex; align-items: center; gap: 16px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.brand { font-weight: 700; } .brand span { color: var(--accent); font-weight: 500; }
.tabs { display: flex; gap: 4px; }
.tab { border: none; background: transparent; padding: 6px 10px; border-radius: 6px; color: var(--muted); }
.tab[aria-selected="true"] { background: var(--bg); color: var(--text); font-weight: 600; }
.status { margin-left: auto; display: flex; gap: 8px; font-size: 12px; color: var(--muted); }
.status .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 4px; background: var(--muted); }
.status .ok .dot { background: var(--ok); } .status .bad .dot { background: var(--danger); } .status .degraded .dot { background: var(--warn); }

.pane { display: grid; grid-template-columns: 300px 1fr; flex: 1; min-height: 0; }
.sidebar { border-right: 1px solid var(--border); background: var(--panel); display: flex; flex-direction: column; min-height: 0; }
.sidebar-head { display: flex; gap: 8px; padding: 10px; align-items: center; border-bottom: 1px solid var(--border); }
.sidebar-head input { flex: 1; }
.filters { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.filters button { padding: 3px 9px; border-radius: 999px; font-size: 12px; }
.filters button.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.list { list-style: none; margin: 0; padding: 6px; overflow: auto; }
.list li { padding: 8px 10px; border-radius: 6px; cursor: pointer; display: grid; gap: 2px; }
.list li:hover { background: var(--bg); }
.list li.active { background: var(--bg); outline: 1px solid var(--accent); }
.list .title { font-weight: 600; }
.list .sub { font-size: 12px; color: var(--muted); display: flex; gap: 8px; }
.tag { font-size: 11px; padding: 1px 6px; border-radius: 999px; background: var(--code-bg); color: var(--muted); }
.tag.library { color: var(--accent); }

.editor { padding: 16px 20px; overflow: auto; min-width: 0; }
.editor.single { grid-column: 1 / -1; }
.empty { color: var(--muted); padding: 40px; text-align: center; }
.editor-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; margin-bottom: 14px; flex-wrap: wrap; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.actions select { width: auto; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }

.split { display: grid; grid-template-columns: minmax(280px, 1fr) minmax(320px, 1.4fr); gap: 20px; }
.vars { display: grid; gap: 10px; align-content: start; }
.vars .field small { display: block; color: var(--muted); font-weight: 400; }
.vars .field .badge-untrusted { font-size: 10px; color: var(--warn); margin-left: 6px; text-transform: uppercase; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.row > label { flex: 1; min-width: 140px; }

.preview { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; display: grid; gap: 10px; align-content: start; min-width: 0; }
.preview-head { display: grid; gap: 6px; }
.fp { display: flex; align-items: center; gap: 8px; font-size: 12px; min-width: 0; flex-wrap: wrap; max-width: 100%; }
.fp-label { color: var(--muted); }
.fp code { background: var(--code-bg); padding: 2px 6px; border-radius: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: min(260px, 100%); }
.badge { font-size: 11px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); }
.badge.stable { color: var(--ok); border-color: var(--ok); }
.badge.changed { color: var(--warn); border-color: var(--warn); }
.usage { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.usage b { color: var(--text); }
.warnings { display: grid; gap: 4px; }
.warnings div { font-size: 12px; color: var(--warn); background: color-mix(in srgb, var(--warn) 10%, transparent); padding: 4px 8px; border-radius: 4px; }
details summary { cursor: pointer; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
pre.prompt { margin: 6px 0 0; background: var(--code-bg); padding: 10px; border-radius: 6px; white-space: pre-wrap; word-break: break-word; max-height: 420px; overflow: auto; }

.edit-form { display: grid; gap: 12px; }

.steps { display: grid; gap: 10px; }
.step { border: 1px solid var(--border); border-radius: var(--radius); padding: 10px; background: var(--panel); display: grid; gap: 8px; }
.step-head { display: flex; gap: 8px; align-items: center; }
.step-head .n { font-weight: 700; color: var(--accent); }
.step-head input, .step-head select { flex: 1; }
.feeds { display: grid; gap: 6px; }
.feed { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.feed input, .feed select { width: auto; flex: 1; min-width: 100px; }
.chain-result { display: grid; gap: 10px; margin-top: 16px; }
.chain-step { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px; }
.chain-step h4 { margin: 0 0 6px; }

.toast { position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 8px 14px; border-radius: 999px; font-size: 13px; z-index: 20; }

@media (max-width: 900px) {
  .topbar { flex-wrap: wrap; gap: 8px; }
  .tabs { order: 3; width: 100%; }
  #logout { margin-left: auto; }
  .pane { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--border); max-height: 40vh; }
  .split { grid-template-columns: 1fr; }
  .status { display: none; }
}