/* ============================================
   NEON KART - Styles
   ============================================ */
:root {
  --bg-deep: #050510;
  --neon-blue: #00d4ff;
  --neon-blue-g: rgba(0,212,255,0.4);
  --neon-pink: #ff2d95;
  --neon-green: #39ff14;
  --neon-yellow: #ffe156;
  --neon-orange: #ff8c00;
  --neon-red: #ff3344;
  --text-primary: #e4e4f0;
  --text-dim: #7777aa;
  --bg-glass: rgba(15,15,40,0.85);
  --border-glow: rgba(0,212,255,0.15);
  --font-display: 'Orbitron', monospace, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:16px; -webkit-font-smoothing:antialiased; }
body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex; justify-content: center; align-items: center;
  overflow: hidden;
  user-select: none; -webkit-user-select: none;
}

#app {
  position: relative; z-index: 1;
  display: flex; gap: 20px; align-items: flex-start;
  padding: 12px;
}

#game-wrapper {
  display: flex; flex-direction: column; gap: 6px; align-items: center;
}

#canvas-frame {
  position: relative;
  border-radius: 10px; overflow: hidden;
  border: 2px solid var(--border-glow);
  box-shadow: 0 0 30px rgba(0,212,255,0.08), inset 0 0 40px rgba(0,0,0,0.4);
}

#game-canvas { display: block; background: #060614; }

/* Overlays */
.overlay {
  position: absolute; inset: 0;
  display: flex; justify-content: center; align-items: center;
  background: rgba(3,3,12,0.9);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  z-index: 20;
  animation: fadeIn 0.3s ease;
}
.overlay.hidden { display: none; }
@keyframes fadeIn { from { opacity:0 } to { opacity:1 } }

.overlay-inner {
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  padding: 20px;
}

.kart-icon {
  font-size: 3rem;
  animation: kartBounce 2s ease-in-out infinite;
}
@keyframes kartBounce {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-10px) rotate(-3deg); }
}

.game-logo {
  font-family: var(--font-display);
  font-size: 2.4rem; font-weight: 900;
  letter-spacing: 0.2em; line-height: 1.15;
  background: linear-gradient(135deg, var(--neon-blue), var(--neon-pink));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 20px var(--neon-blue-g));
}

.subtitle {
  font-family: var(--font-display);
  font-size: 0.65rem; letter-spacing: 0.4em; color: var(--text-dim);
}

.controls-info {
  display: flex; flex-direction: column; gap: 5px;
  font-size: 0.78rem; color: var(--text-dim);
}
.controls-info kbd {
  display: inline-block;
  background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.25);
  border-radius: 4px; padding: 1px 7px;
  font-family: var(--font-display); font-size: 0.6rem; color: var(--neon-blue);
}

.arcade-btn {
  font-family: var(--font-display);
  font-size: 0.85rem; font-weight: 700; letter-spacing: 0.18em;
  color: var(--bg-deep);
  background: linear-gradient(135deg, var(--neon-blue), var(--neon-pink));
  border: none; border-radius: 8px; padding: 13px 36px;
  cursor: pointer; text-transform: uppercase;
  transition: all 250ms ease;
  box-shadow: 0 0 20px var(--neon-blue-g);
}
.arcade-btn:hover {
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 0 30px var(--neon-blue-g), 0 0 60px rgba(255,45,149,0.15);
}
.arcade-btn:active { transform: scale(0.97); }

/* Countdown */
.countdown-num {
  font-family: var(--font-display);
  font-size: 6rem; font-weight: 900;
  color: var(--neon-yellow);
  text-shadow: 0 0 40px rgba(255,225,86,0.6);
  animation: countPop 0.8s ease-out;
}
@keyframes countPop {
  0% { transform: scale(2.5); opacity: 0; }
  50% { transform: scale(0.9); opacity: 1; }
  100% { transform: scale(1); }
}

/* Pause */
.pause-title {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 900; letter-spacing: 0.15em;
  color: var(--neon-blue);
  text-shadow: 0 0 20px var(--neon-blue-g);
}

/* Finish */
.finish-title {
  font-family: var(--font-display);
  font-size: 3.5rem; font-weight: 900; letter-spacing: 0.1em;
  background: linear-gradient(135deg, var(--neon-yellow), var(--neon-orange));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 15px rgba(255,225,86,0.5));
  animation: countPop 0.6s ease-out;
}
.finish-label {
  font-family: var(--font-display);
  font-size: 1.2rem; letter-spacing: 0.3em; color: var(--text-dim);
}
.finish-stats {
  display: flex; gap: 24px;
}
.finish-stats > div {
  display: flex; flex-direction: column; gap: 2px;
}
.fs-label {
  font-family: var(--font-display);
  font-size: 0.5rem; letter-spacing: 0.2em; color: var(--text-dim);
}
.fs-value {
  font-family: var(--font-display);
  font-size: 1.1rem; font-weight: 700; color: var(--neon-blue);
  text-shadow: 0 0 8px var(--neon-blue-g);
}

@media (max-width: 600px) {
  #app { padding: 6px; }
  .game-logo { font-size: 1.8rem; }
}

/* === Floating Back to Portal Button === */
.back-home-btn {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 9999;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(10, 10, 26, 0.75);
  border: 1px solid var(--neon-cyan, var(--neon-blue, #00d4ff));
  border-radius: 20px;
  color: var(--neon-cyan, var(--neon-blue, #00d4ff));
  font-family: var(--font-display, 'Orbitron'), monospace;
  font-size: 0.75rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.1em;
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.2), inset 0 0 4px rgba(0, 212, 255, 0.1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all 0.25s ease;
  cursor: pointer;
}

.back-home-btn:hover {
  background: var(--neon-cyan, var(--neon-blue, #00d4ff));
  color: #050510;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.45);
  transform: translateY(-1.5px);
}

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

@media (max-width: 600px) {
  .back-home-btn {
    top: 12px;
    left: 12px;
    padding: 6px 12px;
    font-size: 0.65rem;
  }
}

/* === Title Screen Lobby Customization === */
.lobby-panels {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 10px 0 15px 0;
  align-items: center;
}

.selector-container {
  width: 290px;
  background: rgba(15, 15, 40, 0.5);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  box-shadow: inset 0 0 10px rgba(0, 212, 255, 0.05);
  backdrop-filter: blur(8px);
}

.selector-label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.track-selector {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 10px;
}

.arrow-btn {
  background: none;
  border: none;
  color: var(--neon-blue);
  font-size: 0.95rem;
  font-weight: 900;
  cursor: pointer;
  padding: 4px 10px;
  transition: all 0.2s ease;
  text-shadow: 0 0 8px var(--neon-blue-g);
}

.arrow-btn:hover {
  transform: scale(1.25);
  color: var(--neon-pink);
}

.selector-value {
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
}

.selector-desc {
  font-size: 0.65rem;
  color: #7777aa;
  text-align: center;
  line-height: 1.4;
  margin-top: 2px;
}

/* Color Swatches */
.color-swatches {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
  margin-top: 2px;
}

.color-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.color-swatch:hover {
  transform: scale(1.2);
}

.color-swatch.active {
  border-color: #ffffff;
  transform: scale(1.25);
}