/* HGRT Flow Studio — NACT UI inspired dark canvas theme */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #14171c; --panel: #1b1f26; --border: #2b313b;
  --text: #d7dde6; --muted: #7d8aa0; --accent: #4f8ef7;
  --ok: #3ecf8e; --warn: #f7b84f; --bad: #f75e4f; --trigger: #c792ea;
}
html, body { height: 100%; }
body {
  background: var(--bg); color: var(--text);
  font: 13px/1.5 "Segoe UI", system-ui, sans-serif;
  display: flex; flex-direction: column; overflow: hidden;
}

/* ---------- toolbar ---------- */
#toolbar {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px; background: var(--panel);
  border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.brand { font-weight: 700; font-size: 15px; margin-right: 10px; }
button, select {
  background: #232935; color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 12px; cursor: pointer; font-size: 12px;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.run { background: #1d3d2a; border-color: var(--ok); color: var(--ok); }
button.mini { padding: 2px 8px; font-size: 11px; }
.sep { width: 1px; height: 22px; background: var(--border); }
.muted { color: var(--muted); font-size: 12px; }
.badge {
  padding: 3px 10px; border-radius: 10px; font-size: 11px; font-weight: 600;
  background: #2b313b; text-transform: uppercase;
}
.badge.running { background: #1c3a5c; color: var(--accent); }
.badge.ok { background: #163d2b; color: var(--ok); }
.badge.waiting { background: #463717; color: var(--warn); }
.badge.failed { background: #46201c; color: var(--bad); }

/* ---------- 3-column layout ---------- */
#layout { display: flex; flex: 1; min-height: 0; }
#palette {
  width: 220px; background: var(--panel); border-right: 1px solid var(--border);
  padding: 12px; overflow-y: auto; flex-shrink: 0;
}
#palette h3 { font-size: 11px; text-transform: uppercase; color: var(--muted); margin: 14px 0 6px; }
#palette h3:first-child { margin-top: 0; }
.hint { font-size: 11px; color: var(--muted); margin-bottom: 8px; }
.palette-item {
  padding: 8px 10px; margin: 4px 0; background: #232935;
  border: 1px solid var(--border); border-radius: 6px; cursor: grab;
}
.palette-item:hover { border-color: var(--accent); }
#catalog { font-size: 11px; color: var(--muted); }
#catalog div { padding: 2px 0; }
.legend { font-size: 11px; color: var(--muted); }
.legend div { display: flex; align-items: center; gap: 6px; padding: 2px 0; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dash { width: 16px; border-top: 2px dashed var(--trigger); display: inline-block; }

/* ---------- canvas ---------- */
#canvas-wrap { flex: 1; position: relative; min-width: 0; }
#canvas { width: 100%; height: 100%; background:
  radial-gradient(circle, #20262f 1px, transparent 1px) 0 0 / 24px 24px; }
.node rect.box {
  fill: #232935; stroke: var(--border); stroke-width: 1.5; rx: 10;
}
.node.selected rect.box { stroke: var(--accent); stroke-width: 2.5; }
.node text.title { fill: var(--text); font-size: 12px; font-weight: 600; }
.node text.sub { fill: var(--muted); font-size: 10px; }
.node .status { stroke: none; }
.node .status.idle { fill: #3a4351; }
.node .status.running { fill: var(--accent); }
.node .status.ok { fill: var(--ok); }
.node .status.waiting_approval { fill: var(--warn); }
.node .status.failed, .node .status.skipped { fill: var(--bad); }
.node .port {
  fill: #3a4351; stroke: var(--muted); stroke-width: 1.5; cursor: crosshair;
}
.node .port:hover { fill: var(--accent); stroke: #fff; }
.node .port.trigger { stroke: var(--trigger); }
.edge { fill: none; stroke: #7d8aa0; stroke-width: 2; }
.edge.trigger { stroke: var(--trigger); stroke-dasharray: 6 4; }
.edge.temp { stroke: var(--accent); stroke-dasharray: 5 3; pointer-events: none; }
.edge-label { fill: var(--muted); font-size: 9px; }

#toast {
  position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%);
  background: #232935; border: 1px solid var(--border); padding: 8px 18px;
  border-radius: 8px; opacity: 0; transition: opacity .3s; pointer-events: none;
}
#toast.show { opacity: 1; }
#toast.error { border-color: var(--bad); color: var(--bad); }
#toast.success { border-color: var(--ok); color: var(--ok); }

/* ---------- inspector + log ---------- */
#inspector {
  width: 300px; background: var(--panel); border-left: 1px solid var(--border);
  padding: 12px; overflow-y: auto; flex-shrink: 0;
}
#inspector h3 {
  font-size: 11px; text-transform: uppercase; color: var(--muted);
  margin: 12px 0 6px; display: flex; justify-content: space-between; align-items: center;
}
#inspector h3:first-child { margin-top: 0; }
#inspector-body { font-size: 12px; }
#inspector-body .row { padding: 3px 0; border-bottom: 1px solid var(--border); }
#inspector-body .k { color: var(--muted); }
#inspector-body pre {
  background: #12151a; padding: 8px; border-radius: 6px; font-size: 11px;
  overflow-x: auto; white-space: pre-wrap; word-break: break-all;
}
.gate-btns button { margin: 4px 4px 0 0; }
#run-log { font-size: 11px; font-family: Consolas, monospace; }
#run-log .ev { padding: 3px 4px; border-bottom: 1px solid var(--border); }
#run-log .ev.gate { color: var(--warn); }
#run-log .ev.error { color: var(--bad); }
#run-log .ev.run { color: var(--accent); }
#run-log .ev.ok { color: var(--ok); }