.utilities .container-whiteboard {
  width: 100%;
  height: 99vh;
  position: relative;
  border: 1px solid rgb(184, 184, 184);
}
.utilities .whiteboard-container {
  width: 100%;
  height: 99vh;
  background-image: linear-gradient(#e0e0e0 1px, transparent 1px), linear-gradient(90deg, #e0e0e0 1px, transparent 1px);
  background-size: 20px 20px;
  position: relative;
}
.utilities canvas {
  display: block;
}
.utilities .toolbar {
  position: absolute;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  display: flex;
  gap: 8px;
  padding: 8px 12px;
  z-index: 100;
}
.utilities .top-toolbar {
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
}
.utilities .bottom-toolbar {
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
}
.utilities .tool-btn,
.utilities .bottom-toolbar button {
  background: white;
  border: 1px solid #ccc;
  padding: 6px 10px;
  font-size: 18px;
  border-radius: 6px;
  cursor: pointer;
  transition: 0.2s ease;
}
.utilities .tool-btn:hover,
.utilities .bottom-toolbar button:hover {
  background: #f2f2f2;
}
.utilities .tool-btn.active {
  background: #007bff;
  color: white;
  border-color: #007bff;
}
.utilities .settings-panel input[type=color] {
  width: 36px;
  height: 32px;
  border: none;
  margin-left: 6px;
  cursor: pointer;
}
.utilities .settings-panel {
  display: none;
  /* ✅ initially hidden */
}
.utilities .settings-panel {
  position: absolute;
  bottom: 60px;
  left: 20px;
  background: #fff;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 8px;
  display: none;
  flex-direction: row;
  gap: 16px;
  z-index: 100;
}
.utilities .settings-panel label {
  font-size: 14px;
}