* { box-sizing: border-box; }
html,body { height:100%; margin:0; background:#87CEEB; font-family:Arial,Helvetica,sans-serif }
canvas { display:block }
#ui { position:fixed; left:12px; top:12px; color:#fff; z-index:10; text-shadow:0 1px 2px rgba(0,0,0,0.6) }
#score { font-weight:700; font-size:18px; margin-bottom:6px }
#help { font-size:13px; opacity:0.9 }
#restart { margin-top:6px; padding:6px 10px; font-size:14px }

/* Overlay bij Game Over */
.hidden { display:none !important }

/* Ensure hidden wins over menu/shop display rules */
#main-menu.hidden,
#skin-shop.hidden {
  display: none !important;
}
#overlay { position:fixed; left:0; top:0; right:0; bottom:0; display:flex; align-items:center; justify-content:center; z-index:20 }
.overlay-box { background:rgba(0,0,0,0.6); color:#fff; padding:20px 26px; border-radius:8px; text-align:center; box-shadow:0 8px 24px rgba(0,0,0,0.5) }
.overlay-box h1 { margin:0 0 8px 0; font-size:28px }
.overlay-box #overlay-score { font-size:18px }

/* Main Menu */
#main-menu {
  position: fixed;
  left: 0; top: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 30;
  background: rgba(135, 206, 235, 0.78);
  backdrop-filter: blur(8px);
}

.menu-content {
  text-align: center;
  background: rgba(255, 255, 255, 0.95);
  padding: 50px 60px;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.game-title {
  font-size: 48px;
  margin: 0 0 30px 0;
  color: #0066cc;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.menu-stats {
  margin-bottom: 30px;
  font-size: 18px;
  color: #333;
}

.menu-stats div {
  margin: 8px 0;
}

.menu-btn {
  display: block;
  width: 100%;
  margin: 12px 0;
  padding: 15px 30px;
  font-size: 20px;
  font-weight: bold;
  color: white;
  background: linear-gradient(135deg, #0066cc, #0099ff);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.menu-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.3);
}

.menu-btn.selected {
  outline: 3px solid #00ccff;
  box-shadow: 0 0 0 4px rgba(0, 204, 255, 0.25), 0 8px 20px rgba(0,0,0,0.2);
}

.menu-btn:active {
  transform: translateY(0);
}

.shop-btn {
  background: linear-gradient(135deg, #9933cc, #cc66ff);
}

/* Skin Shop */
#skin-shop {
  position: fixed;
  left: 0; top: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 35;
  background: rgba(135, 206, 235, 0.78);
  backdrop-filter: blur(8px);
}

/* Leaderboard View */
#leaderboard-view {
  position: fixed;
  left: 0; top: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 35;
  background: rgba(135, 206, 235, 0.78);
  backdrop-filter: blur(8px);
}

.shop-content {
  background: rgba(255, 255, 255, 0.95);
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
}

.shop-content h2 {
  margin: 0 0 20px 0;
  font-size: 36px;
  color: #9933cc;
  text-align: center;
}

.shop-balance {
  text-align: center;
  font-size: 24px;
  font-weight: bold;
  color: #333;
  margin-bottom: 30px;
}

.skins-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

@media (max-width: 900px) {
  .skins-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .skins-grid {
    grid-template-columns: 1fr;
  }
}

.skin-item {
  background: white;
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transition: transform 0.2s;
}

.skin-item.selected {
  outline: 3px solid #00ccff;
  box-shadow: 0 0 0 4px rgba(0, 204, 255, 0.25), 0 8px 20px rgba(0,0,0,0.2);
  transform: translateY(-4px);
}

.skin-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.skin-preview {
  width: 100%;
  height: 120px;
  border-radius: 8px;
  margin-bottom: 12px;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.2);
}

.skin-name {
  font-size: 18px;
  font-weight: bold;
  color: #333;
  margin-bottom: 8px;
}

.skin-price {
  font-size: 14px;
  color: #666;
  margin-bottom: 12px;
}

.skin-btn {
  width: 100%;
  padding: 10px;
  font-size: 14px;
  font-weight: bold;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.skin-btn:not(.owned):not(.equipped) {
  background: linear-gradient(135deg, #00cc66, #00ff88);
  color: white;
}

.skin-btn:not(.owned):not(.equipped):hover {
  background: linear-gradient(135deg, #00ff88, #00cc66);
}

.skin-btn.owned:not(.equipped) {
  background: linear-gradient(135deg, #0066cc, #0099ff);
  color: white;
}

.skin-btn.equipped {
  background: #666;
  color: white;
  cursor: default;
}

.skin-btn:disabled {
  background: #ccc;
  color: #888;
  cursor: not-allowed;
}

/* Kleine polish: maak slope iets glanzender */
.slope-snow { roughness:0.8 }

/* Background blur when menu open */
body.menu-open canvas {
  filter: blur(5px);
}