html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-family: Arial, sans-serif;
}

canvas {
  display: block;
}

body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

canvas {
  -webkit-touch-callout: none;
}

#sidebar {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  min-width: 200px;
  z-index: 1000;
}

#sidebar h3 {
  margin: 0 0 15px 0;
  font-size: 18px;
  color: #000;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
}

.control-group {
  margin-bottom: 20px;
}

.control-group label {
  display: block;
  margin-bottom: 5px;
  font-size: 14px;
  color: #222;
  font-weight: 500;
}

.control-group select {
  width: 100%;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 6px;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  cursor: pointer;
  pointer-events: auto;
  position: relative;
  z-index: 1001;
  color: #000;
  font-weight: 500;
}

.button-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.button-group button {
  padding: 10px 15px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

#playBtn {
  background: rgba(76, 175, 80, 0.8);
  color: white;
  font-weight: bold;
}

#playBtn:hover {
  background: rgba(76, 175, 80, 1);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.4);
}

#clearPathBtn {
  background: rgba(33, 150, 243, 0.8);
  color: white;
}

#clearPathBtn:hover {
  background: rgba(33, 150, 243, 1);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(33, 150, 243, 0.4);
}

#clearWallsBtn {
  background: rgba(244, 67, 54, 0.8);
  color: white;
}

#clearWallsBtn:hover {
  background: rgba(244, 67, 54, 1);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(244, 67, 54, 0.4);
}

#visualOptionsBtn {
  background: rgba(156, 39, 176, 0.8);
  color: white;
}

#visualOptionsBtn:hover {
  background: rgba(156, 39, 176, 1);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(156, 39, 176, 0.4);
}

.visual-options {
  max-height: 200px;
  overflow: hidden;
  transition: max-height 0.3s ease-in-out, margin-top 0.3s ease-in-out, opacity 0.3s ease-in-out;
  margin-top: 15px;
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 15px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.visual-options.collapsed {
  max-height: 0;
  margin-top: 0;
  opacity: 0;
  padding: 0;
  border: none;
}

.visual-options .control-group {
  margin-bottom: 15px;
}

.visual-options .control-group:last-child {
  margin-bottom: 0;
}

.visual-options input[type="range"] {
  width: calc(100% - 50px);
  margin-right: 10px;
  vertical-align: middle;
  cursor: pointer;
  accent-color: rgba(156, 39, 176, 0.8);
}

.visual-options span {
  display: inline-block;
  min-width: 40px;
  font-size: 12px;
  color: #000;
  font-weight: 600;
  vertical-align: middle;
}

.visual-options label {
  font-size: 13px;
  margin-bottom: 8px;
}