/* Graph builder (/grafok): runs in the visitor's browser; the look follows kofa.css tokens. */
.gb { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 14px; align-items: start; }
.gb-side { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; display: flex; flex-direction: column; max-height: 78vh; min-height: 420px; }
.gb-tabs { display: flex; border-bottom: 1px solid var(--border); }
.gb-tabs button { flex: 1; background: none; border: 0; padding: 10px; font: inherit; color: var(--muted); cursor: pointer; border-bottom: 2px solid transparent; }
.gb-tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }
.gb-search { margin: 10px; }
.gb-list { overflow: auto; padding: 0 10px 10px; display: flex; flex-direction: column; gap: 8px; }
.gb-item { border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; align-items: center; background: var(--bg); }
.gb-item b { font-size: .92rem; overflow-wrap: anywhere; }
.gb-item small { grid-column: 1; color: var(--muted); overflow-wrap: anywhere; }
.gb-item button { grid-row: 1 / span 2; grid-column: 2; }
.gb-main { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.gb-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.gb-bar input[type="text"] { flex: 1; min-width: 160px; }
.gb-bar .stat { color: var(--muted); font-size: .85rem; }
.gb-view { position: relative; overflow: auto; height: 68vh; min-height: 380px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg-alt); background-image: radial-gradient(var(--border) 1px, transparent 1px); background-size: 22px 22px; }
.gb-canvas { position: relative; width: 4000px; height: 2400px; transform-origin: 0 0; }
.gb-canvas svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.gb-link { fill: none; stroke: var(--accent); stroke-width: 2; pointer-events: stroke; cursor: pointer; opacity: .85; }
.gb-link:hover { stroke: var(--danger); stroke-width: 3; }
.gb-link.temp { stroke-dasharray: 5 4; pointer-events: none; opacity: .7; }
.gb-empty { position: absolute; left: 24px; top: 24px; max-width: 420px; color: var(--muted); }
.gb-node { position: absolute; min-width: 190px; max-width: 260px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 2px 8px var(--glow); user-select: none; }
.gb-node.unknown { border-style: dashed; border-color: var(--warn); }
.gb-node header { display: flex; align-items: center; gap: 6px; padding: 6px 8px; background: var(--bg-alt); border-radius: 8px 8px 0 0; cursor: grab; touch-action: none; }
.gb-node header strong { flex: 1; font-size: .88rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gb-node header button { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 1rem; line-height: 1; padding: 0 2px; }
.gb-node header button:hover { color: var(--danger); }
.gb-node .sub { padding: 2px 8px 0; font-size: .72rem; color: var(--muted); font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gb-ports { display: grid; grid-template-columns: 1fr 1fr; gap: 0 8px; padding: 6px 0 8px; }
.gb-col { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.gb-port { display: flex; align-items: center; gap: 6px; font-size: .78rem; height: 20px; min-width: 0; }
.gb-port span.l { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gb-port.out { flex-direction: row-reverse; text-align: right; }
.gb-dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--accent); background: var(--surface); flex: none; cursor: crosshair; touch-action: none; }
.gb-port.in .gb-dot { margin-left: -7px; }
.gb-port.out .gb-dot { margin-right: -7px; }
.gb-dot.used { background: var(--accent); }
.gb-dot.ok { background: var(--ok); border-color: var(--ok); box-shadow: 0 0 0 4px var(--glow); }
.gb-dot.no { opacity: .3; }
.gb-hint { color: var(--muted); font-size: .85rem; margin: 0; }
@media (max-width: 900px) {
  .gb { grid-template-columns: 1fr; }
  .gb-side { max-height: 40vh; min-height: 0; }
}