:root {
  --bg-dark: #0a0a0c;
  --glass-bg: rgba(20, 20, 25, 0.85);
  --glass-border: rgba(255, 255, 255, 0.08);
  --text-primary: rgba(255, 255, 255, 0.95);
  --text-secondary: rgba(255, 255, 255, 0.5);
  --text-muted: rgba(255, 255, 255, 0.3);
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

body {
  background: var(--bg-dark);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-primary);
}

#canvas-container {
  position: fixed;
  inset: 0;
  z-index: 0;
}

#canvas-container canvas {
  display: block;
}

.ui-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
}

.ui-icon {
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  pointer-events: auto;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  transform: translate(-50%, -50%);
}

.ui-icon svg {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}

.ui-icon:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.ui-icon:hover svg {
  color: var(--text-primary);
}

.ui-icon.active {
  border-color: var(--icon-accent, var(--text-primary));
  box-shadow: 0 0 20px color-mix(in srgb, var(--icon-accent, white) 40%, transparent);
}

.ui-icon.active svg {
  color: var(--icon-accent, var(--text-primary));
}

.ui-icon.dragging {
  transform: translate(-50%, -50%) scale(1.15);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  cursor: grabbing;
  transition: none;
}

.ui-icon.hidden { display: none; }

.snap-preview {
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 2px dashed rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.02);
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease, left 0.08s ease, top 0.08s ease;
}

.snap-preview.visible {
  opacity: 1;
}

.trash-zone {
  position: fixed;
  top: 20px;
  left: 20px;
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 2px dashed var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.2s ease, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 250;
  pointer-events: none;
}

.trash-zone svg {
  width: 28px;
  height: 28px;
  color: var(--text-secondary);
}

.trash-zone.visible {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.trash-zone.danger {
  border-color: #ff4d6d;
  background: rgba(255, 77, 109, 0.2);
  transform: scale(1.1);
}

.trash-zone.danger svg {
  color: #ff4d6d;
}

.settings-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  opacity: 0.3;
  transition: opacity 0.2s ease;
  z-index: 300;
}

.settings-btn:hover { opacity: 0.8; }
.settings-btn.hidden { display: none; }

.window {
  position: fixed;
  min-width: 280px;
  background: var(--glass-bg);
  backdrop-filter: blur(30px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  z-index: 400;
  overflow: hidden;
}

.window.hidden { display: none; }
.window-settings { top: 70px; right: 20px; }
.window-inventory { top: 70px; right: 320px; min-width: 320px; }

.window-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--glass-border);
  cursor: grab;
}

.window-titlebar:active { cursor: grabbing; }

.window-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
}

.window-close {
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  border-radius: 6px;
}

.window-close:hover {
  background: rgba(255, 77, 109, 0.2);
  color: #ff4d6d;
}

.window-content { padding: 16px; }

.window-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

.inventory-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
}

.inventory-btn:hover {
  background: rgba(255, 255, 255, 0.06);
}

.inventory-btn svg {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
}

.inventory-badge {
  margin-left: auto;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: #ff4d6d;
  color: white;
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.inventory-badge.hidden { display: none; }

.help-text {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

.inventory-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.inventory-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
}

.inventory-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--item-accent);
}

.inventory-item svg {
  width: 24px;
  height: 24px;
  color: var(--item-accent);
}

.inventory-item-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}

.inventory-empty {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  padding: 20px;
}

.equipped-count {
  font-size: 12px;
  color: var(--text-muted);
}

.hidden { display: none !important; }