/* ===========================================================================
   Node Canvas — Flora-style typed-node creative flow.
   Separate node types (Text · Image · Generate) wired by typed ports.
   Mounted into #nodeCanvasMount in engine/index.html.
   =========================================================================== */

.nc-panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.nc-panel-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 9px;
  border: 1px solid rgba(0,0,0,0.16);
  border-radius: 7px;
  background: #fff;
  color: #3a7bc8;
  font: inherit;
  font-size: 0.74rem;
  cursor: pointer;
}
.nc-panel-toggle:hover { background: #f1f5f9; }
.nc-panel-toggle .material-icons { font-size: 0.95rem; }
.nc-panel-collapsed .nc-panel-heading { margin-bottom: 0; }
.nc-panel-collapsed .nc-panel-content { display: none; }
.dark .nc-panel-toggle {
  border-color: rgba(255,255,255,0.2);
  background: #2a2a2a;
  color: #8fc2ff;
}
.dark .nc-panel-toggle:hover { background: #343a44; }

.nc-model-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.nc-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.nc-toolbar .nc-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px;
  font-size: 0.82rem;
  border: 1px solid rgba(0,0,0,0.18);
  background: #fff;
  color: #444;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
}
.nc-toolbar .nc-btn:hover { background: #f1f3f6; }
.nc-toolbar .nc-btn .material-icons { font-size: 1rem; }
.nc-btn-text .material-icons   { color: #7c5cff; }
.nc-btn-image .material-icons  { color: #e2914a; }
.nc-btn-gen .material-icons    { color: #4a90e2; }
.nc-toolbar .nc-hint {
  margin-left: auto;
  font-size: 0.74rem;
  color: #999;
}

/* Viewport — clips the pannable world */
.nc-viewport {
  position: relative;
  width: 100%;
  height: 580px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: 10px;
  background-color: #f7f8fa;
  background-image: radial-gradient(circle, rgba(0,0,0,0.08) 1px, transparent 1px);
  background-size: 22px 22px;
  cursor: grab;
  user-select: none;
  touch-action: none;
}
.nc-viewport.nc-panning { cursor: grabbing; }

.nc-zoom-controls {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 10;
  display: flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.16);
  border-radius: 8px;
  background: rgba(255,255,255,0.94);
  box-shadow: 0 3px 12px rgba(0,0,0,0.12);
}
.nc-zoom-controls button {
  width: 34px;
  height: 32px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #334155;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}
.nc-zoom-controls button:hover { background: #eef2f7; }
.nc-zoom-level {
  min-width: 48px;
  color: #64748b;
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
  pointer-events: none;
}

.nc-minimap {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 10;
  width: 180px;
  height: 120px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.18);
  border-radius: 8px;
  background: rgba(255,255,255,0.94);
  box-shadow: 0 3px 12px rgba(0,0,0,0.12);
  cursor: crosshair;
}
.nc-minimap canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.dark .nc-zoom-controls,
.dark .nc-minimap {
  border-color: rgba(255,255,255,0.2);
  background: rgba(35,35,35,0.94);
}
.dark .nc-zoom-controls button { color: #e2e8f0; }
.dark .nc-zoom-controls button:hover { background: #343a44; }
.dark .nc-zoom-level { color: #aab4c3; }

.nc-world { position: absolute; top: 0; left: 0; width: 100%; height: 100%; transform-origin: 0 0; }
.nc-edges { position: absolute; top: 0; left: 0; width: 1px; height: 1px; overflow: visible; pointer-events: none; }
.nc-edges path { fill: none; stroke-width: 2.5; }
.nc-edges path.nc-edge-text  { stroke: #7c5cff; }
.nc-edges path.nc-edge-image { stroke: #e2914a; }
.nc-edges path.nc-edge-temp  { stroke-dasharray: 6 5; opacity: 0.8; }

/* ---- Node shell -------------------------------------------------------- */
.nc-node {
  position: absolute;
  width: 240px;
  background: #fff;
  border: 1px solid rgba(0,0,0,0.16);
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  font-size: 0.82rem;
}
.nc-node.nc-selected { box-shadow: 0 4px 22px rgba(74,144,226,0.4); }

.nc-node-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  color: #fff;
  border-radius: 11px 11px 0 0;
  cursor: move;
  font-weight: 600;
}
.nc-type-text   .nc-node-head { background: linear-gradient(180deg,#8b6cff,#7250e6); }
.nc-type-image  .nc-node-head { background: linear-gradient(180deg,#eaa15c,#dd8636); }
.nc-type-generate .nc-node-head { background: linear-gradient(180deg,#4a90e2,#3a7bc8); }
.nc-node-head .material-icons { font-size: 0.95rem; }
.nc-node-title { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nc-node-del { cursor: pointer; opacity: 0.85; line-height: 1; }
.nc-node-del:hover { opacity: 1; }

.nc-node-body { padding: 9px 10px 11px; }
.nc-node-body textarea {
  width: 100%; box-sizing: border-box; min-height: 56px; resize: vertical;
  font: inherit; font-size: 0.8rem; padding: 6px 7px;
  border: 1px solid rgba(0,0,0,0.18); border-radius: 7px;
}

/* Generate node input rows (left ports) */
.nc-inrow {
  position: relative;
  display: flex; align-items: center; gap: 6px;
  font-size: 0.74rem; color: #666; padding: 3px 0;
}

/* Image upload / preview slot */
.nc-input-slot {
  margin-top: 8px; position: relative;
  border: 1px dashed rgba(0,0,0,0.25); border-radius: 8px; min-height: 64px;
  display: flex; align-items: center; justify-content: center; text-align: center;
  font-size: 0.72rem; color: #999; overflow: hidden; cursor: pointer;
}
.nc-input-slot.nc-has-img { border-style: solid; padding: 0; }
.nc-input-slot img { width: 100%; display: block; }

/* Aspect ratio control */
.nc-ratio-label { font-size: 0.72rem; color: #888; margin: 9px 0 4px; }
.nc-ratio { width: 100%; box-sizing: border-box; font: inherit; font-size: 0.78rem;
  padding: 5px 7px; border: 1px solid rgba(0,0,0,0.18); border-radius: 7px; background: #fff; }

/* Per-node model + output-type selectors */
.nc-model { width: 100%; box-sizing: border-box; font: inherit; font-size: 0.78rem;
  padding: 5px 6px; border: 1px solid rgba(0,0,0,0.18); border-radius: 7px; background: #fff; margin-bottom: 4px; }
.nc-output-type { width: 100%; box-sizing: border-box; font: inherit; font-size: 0.78rem;
  padding: 5px 7px; border: 1px solid rgba(0,0,0,0.18); border-radius: 7px; background: #fff; text-transform: capitalize; }
.nc-out-kind { font-size: 0.72rem; color: #888; margin: 8px 0 2px; text-transform: capitalize; }
.nc-node-body .nc-instr { min-height: 42px; margin-top: 0; }
.nc-output-text { padding: 8px 9px; font-size: 0.78rem; color: #333; white-space: pre-wrap;
  max-height: 170px; overflow: auto; background: #fff; }
.nc-output video { width: 100%; display: block; }

.nc-node-actions { display: flex; gap: 6px; margin-top: 9px; }
.nc-node-actions button {
  flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 4px;
  padding: 6px 8px; font-size: 0.78rem; border: none; border-radius: 7px; cursor: pointer;
}
.nc-gen-btn { background: #2da44e; color: #fff; }
.nc-gen-btn:hover { background: #268a42; }
.nc-gen-btn:disabled { opacity: 0.6; cursor: default; }
.nc-next-btn { background: rgba(74,144,226,0.12); color: #3a7bc8; }
.nc-next-btn:hover { background: rgba(74,144,226,0.22); }
.nc-node-actions button .material-icons { font-size: 0.95rem; }

.nc-output { margin-top: 9px; border-radius: 8px; overflow: hidden; position: relative; background: #f0f1f3; }
.nc-output img { width: 100%; display: block; cursor: zoom-in; }
.nc-output-empty { min-height: 40px; display: flex; align-items: center; justify-content: center; color: #bbb; font-size: 0.72rem; }
.nc-output-empty.nc-generating { gap: 8px; }
.nc-elapsed { font-variant-numeric: tabular-nums; }
.nc-model-output {
  position: relative;
  background-color: #e8edf3;
  background-image:
    linear-gradient(45deg, rgba(100,116,139,0.08) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(100,116,139,0.08) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(100,116,139,0.08) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(100,116,139,0.08) 75%);
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-size: 16px 16px;
}
.nc-model-output model-viewer {
  display: block;
  width: 100%;
  height: 220px;
  background: transparent;
  --poster-color: #e8edf3;
}
.nc-model-status {
  position: absolute;
  top: 96px;
  left: 10px;
  right: 10px;
  color: #64748b;
  font-size: 0.72rem;
  text-align: center;
  pointer-events: none;
}
.nc-model-status.error {
  color: #b42318;
  font-weight: 600;
}
.nc-model-output a {
  display: block;
  padding: 7px 9px;
  background: #252525;
  color: #8fc2ff;
  font-size: 0.72rem;
  text-align: center;
  text-decoration: none;
}
.nc-model-output a:hover { text-decoration: underline; }
.nc-spin { width: 18px; height: 18px; border: 2px solid rgba(74,144,226,0.3); border-top-color: #4a90e2; border-radius: 50%; animation: nc-spin 0.8s linear infinite; }
@keyframes nc-spin { to { transform: rotate(360deg); } }

/* ---- Ports ------------------------------------------------------------- */
.nc-port {
  position: absolute; width: 15px; height: 15px; border-radius: 50%;
  background: #fff; border: 2.5px solid #888; cursor: crosshair; z-index: 3;
}
.nc-port[data-ptype="text"]  { border-color: #7c5cff; }
.nc-port[data-ptype="image"] { border-color: #e2914a; }
.nc-port.nc-filled[data-ptype="text"]  { background: #7c5cff; }
.nc-port.nc-filled[data-ptype="image"] { background: #e2914a; }
.nc-port-out { right: -9px; top: 50%; transform: translateY(-50%); }
.nc-port-in  { left: -19px; top: 50%; transform: translateY(-50%); }