* {
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
  font-family: 'Inter', sans-serif;
}
html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: #090d16;
  color: #f8fafc;
}
#canvas-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Speed Blur & Vignette Overlays */
#speed-vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  background: radial-gradient(circle at center, transparent 38%, rgba(2, 6, 23, 0.45) 75%, rgba(2, 6, 23, 0.88) 100%);
  opacity: 0;
  transition: opacity 0.12s ease-out;
}
#nitro-speed-lines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 6;
  background: radial-gradient(ellipse at center, transparent 32%, rgba(56, 189, 248, 0.16) 70%, rgba(6, 182, 212, 0.4) 100%);
  opacity: 0;
  mix-blend-mode: screen;
  transition: opacity 0.1s ease-out;
}

/* Modern Glassmorphic Panels */
.glass-panel {
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}
.glass-pill {
  background: rgba(15, 23, 42, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

/* Cyber Dashboard Tachometer */
.tachometer-ring {
  filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.65));
}
.tachometer-ring-red {
  filter: drop-shadow(0 0 10px rgba(239, 68, 68, 0.85));
}

/* Showroom Grab Cursors */
.showroom-grabbable {
  cursor: grab;
}
.showroom-grabbable:active {
  cursor: grabbing;
}

/* Modern Touch Controls */
.control-btn {
  touch-action: manipulation;
  transition: transform 0.08s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}
.control-btn:active, .control-btn.active-press {
  transform: scale(0.92);
  background: rgba(56, 189, 248, 0.4) !important;
  border-color: rgba(56, 189, 248, 0.9) !important;
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.65) !important;
}

/* Popups & Animations */
@keyframes floatPop {
  0% { opacity: 1; transform: translateY(0) scale(0.9); }
  50% { opacity: 1; transform: translateY(-18px) scale(1.08); }
  100% { opacity: 0; transform: translateY(-36px) scale(0.95); }
}
.floating-popup {
  animation: floatPop 0.95s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes nitroPulse {
  0%, 100% { filter: drop-shadow(0 0 4px rgba(34, 211, 238, 0.6)); }
  50% { filter: drop-shadow(0 0 12px rgba(34, 211, 238, 0.95)); }
}
.nitro-active-glow {
  animation: nitroPulse 0.65s infinite ease-in-out;
}

/* Scrollbars */
.custom-scroll::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
.custom-scroll::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.4);
  border-radius: 9999px;
}
.custom-scroll::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.4);
  border-radius: 9999px;
}
.level-locked {
  filter: grayscale(0.85);
  opacity: 0.65;
}