* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: #333;
}

.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Header */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.header h1 {
  color: #333;
  font-size: 2rem;
  font-weight: 600;
}

.controls {
  display: flex;
  gap: 10px;
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn.primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.9);
  color: #333;
  border: 1px solid #ddd;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Main Content */
.main-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  height: 500px;
}

/* Camera Section */
.camera-section {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.camera-container {
  position: relative;
  width: 100%;
  height: 300px;
  border-radius: 10px;
  overflow: hidden;
  background: #000;
}

#video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hand-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.camera-info {
  margin-top: 15px;
  text-align: center;
}

.camera-info ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.camera-info li {
  font-weight: bold;
  margin: 8px 0;
  color: black;
  font-size: 16px;
  padding-left: 20px;
  position: relative;
}

.camera-info li:before {
  content: "•";
  color: #667eea;
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* Canvas Section */
.canvas-section {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  position: relative;
}

.drawing-canvas {
  width: 100%;
  height: 300px;
  border: 2px solid #ddd;
  border-radius: 10px;
  background: white;
  cursor: crosshair;
}

.canvas-overlay {
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  pointer-events: none;
}

.status-indicator {
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 8px 12px;
  border-radius: 20px;
  font-size: 12px;
  text-align: center;
  backdrop-filter: blur(5px);
}

/* Toolbar */
.toolbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.tool-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tool-group label {
  font-weight: 500;
  color: #333;
  min-width: 80px;
}

.slider {
  width: 100px;
  height: 6px;
  border-radius: 3px;
  background: #ddd;
  outline: none;
  -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  cursor: pointer;
}

.color-palette {
  display: flex;
  gap: 8px;
}

.color-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

.color-btn:hover {
  transform: scale(1.1);
}

.color-btn.active {
  border-color: #333;
  box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.5);
}

.color-picker {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  background: none;
  padding: 0;
}

.color-picker:hover {
  transform: scale(1.1);
  border-color: #333;
}

.tool-btn {
  padding: 8px 16px;
  border: 1px solid #ddd;
  border-radius: 6px;
  background: white;
  color: #333;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 12px;
}

.tool-btn:hover {
  background: #f5f5f5;
}

.tool-btn.active {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-color: transparent;
}

/* Hand Info */
.hand-info {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.info-card h3 {
  margin-bottom: 15px;
  color: #333;
  font-size: 1.2rem;
}

#handStatus {
  padding: 10px;
  background: #f8f9fa;
  border-radius: 8px;
  margin-bottom: 10px;
  font-weight: 500;
}

#fingerInfo {
  font-size: 14px;
  color: #666;
  line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 1200px) {
  .main-content {
    grid-template-columns: 1fr;
    height: auto;
  }

  .camera-container,
  .drawing-canvas {
    height: 250px;
  }
}

@media (max-width: 768px) {
  .app-container {
    padding: 10px;
  }

  .header {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .tool-group {
    justify-content: center;
  }
}

/* Animation for status changes */
.status-indicator {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hand tracking visualization */
.hand-landmark {
  position: absolute;
  width: 8px;
  height: 8px;
  background: #ff0000;
  border-radius: 50%;
  border: 2px solid white;
  pointer-events: none;
  z-index: 1000;
}

.hand-connection {
  position: absolute;
  background: #00ff00;
  height: 2px;
  pointer-events: none;
  z-index: 999;
}

/* Fullscreen Overlay */
.fullscreen-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.9);
  z-index: 10000;
  display: flex;
  justify-content: center;
  align-items: center;
}

.fullscreen-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

#fullscreenVideo {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.fullscreen-drawing-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
  cursor: crosshair;
  z-index: 10001;
  background: transparent;
}

.fullscreen-controls {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  gap: 10px;
  z-index: 10002;
}

.fullscreen-controls .btn {
  padding: 8px 16px;
  font-size: 12px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.fullscreen-controls .btn:hover {
  background: rgba(0, 0, 0, 0.9);
  transform: translateY(-1px);
}