:root {
  --bg-primary: #f4f6f9;
  --bg-secondary: #ffffff;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a68;
  --border-color: #e1e4e8;
  --element-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --panel-width: 250px;
}

body, html {
  margin: 0;
  font-family: 'Inter', sans-serif;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

#game-wrapper {
  display: flex;
  height: 100vh;
  max-width: 100vw;
}

#element-panel {
  width: var(--panel-width);
  background-color: var(--bg-secondary);
  padding: 20px;
  overflow-y: auto;
  border-right: 1px solid var(--border-color);
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
}

#element-panel h2 {
  margin-bottom: 20px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
}

#element-container {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 15px;
}

.element {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  cursor: grab;
  user-select: none;
  text-align: center;
  transition: all 0.2s ease;
  position: relative;
  box-shadow: var(--element-shadow);
  font-weight: 500;
  color: var(--text-secondary);
}

.element:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.element:active {
  cursor: grabbing;
}

.element.dragging {
  opacity: 0.7;
}

.element.clone {
  position: absolute;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.8;
}

#crafting-area {
  flex-grow: 1;
  position: relative;
  background-color: var(--bg-primary);
  background-image: 
    linear-gradient(0deg, transparent 24%, rgba(220, 220, 220, 0.05) 25%, rgba(220, 220, 220, 0.05) 26%, transparent 27%, transparent 74%, rgba(220, 220, 220, 0.05) 75%, rgba(220, 220, 220, 0.05) 76%, transparent 77%, transparent),
    linear-gradient(90deg, transparent 24%, rgba(220, 220, 220, 0.05) 25%, rgba(220, 220, 220, 0.05) 26%, transparent 27%, transparent 74%, rgba(220, 220, 220, 0.05) 75%, rgba(220, 220, 220, 0.05) 76%, transparent 77%, transparent);
  background-size: 50px 50px;
}

.craft-shine {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, rgba(255,255,255,0.4) 0%, rgba(255,255,255,0) 100%);
  animation: shine 0.5s ease-out;
  pointer-events: none;
  border-radius: 8px;
}

@keyframes shine {
  0% {
    opacity: 1;
    transform: scale(0);
  }
  100% {
    opacity: 0;
    transform: scale(2);
  }
}