/* =========================================================
   overlay.css — Stili canvas overlay e tooltip di misura
   ========================================================= */

/* Il canvas è posizionato in assoluto dal JS in CanvasManager
   qui definiamo solo transizioni e stati */

#overlay-canvas {
  position: absolute;
  top: 0; left: 0;
  z-index: 10;
  transition: cursor 0.1s;
}

/* Cursore in base al tool attivo */
#overlay-canvas.tool-grid       { cursor: default !important; }
#overlay-canvas.tool-net        { cursor: ns-resize !important; }
#overlay-canvas.tool-verticals  { cursor: move !important; }
#overlay-canvas.tool-measure    { cursor: crosshair !important; }
#overlay-canvas.cursor-pencil   { cursor: crosshair !important; }
#overlay-canvas.cursor-eraser   { cursor: cell !important; }

/* ---- Tooltip coordinate (overlay HTML sopra canvas) ---- */
#measure-tooltip {
  position: absolute;
  z-index: 20;
  background: rgba(10, 13, 18, 0.88);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-primary);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  white-space: nowrap;
  box-shadow: 0 0 12px var(--accent-glow);
}

#measure-tooltip.visible { opacity: 1; }

#measure-tooltip .tt-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

#measure-tooltip .tt-label { color: var(--text-muted); }
#measure-tooltip .tt-val   { color: var(--accent); font-weight: 600; }
#measure-tooltip .tt-val.z { color: var(--green); }

/* ---- Badge step misura (mostra "PUNTO 1" / "PUNTO 2") ---- */
#measure-step-badge {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  background: var(--accent);
  color: var(--bg-base);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 20px;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

#measure-step-badge.visible { opacity: 1; }
#measure-step-badge.step2   { background: var(--green); }