/* ========================================
   畫筆工具樣式
   ======================================== */

.pen-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  cursor: crosshair;
  pointer-events: auto;
}

.pen-canvas.hidden {
  display: none;
}

.pen-toolbar {
  position: fixed;
  top: 70px;
  right: 16px;
  background: white;
  padding: 10px;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  z-index: 10000;
  display: flex;
  align-items: center;
  gap: 6px;
  border: 2px solid #2d6a4f;
}

.pen-toolbar.hidden {
  display: none;
}

.pen-color {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid #ccc;
  cursor: pointer;
  transition: transform 0.1s;
}

.pen-color:hover {
  transform: scale(1.15);
}

.pen-color.active {
  border-color: #000;
  box-shadow: 0 0 0 2px #2d6a4f;
}

.pen-color.highlight {
  opacity: 0.7;
}

#pen-width {
  width: 70px;
}

.pen-toolbar button {
  background: transparent;
  border: 1px solid transparent;
  font-size: 18px;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
}

.pen-toolbar button:hover {
  background: #f0f0f0;
}