* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; height: 100%; overflow: hidden; background: #05070c; }
body { font-family: "Helvetica Neue", Arial, sans-serif; color: #dfe8f2; }
#app, #app canvas { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }
.hidden { display: none !important; }

/* Loading screen */
#loading {
  position: fixed; inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at 50% 70%, #0d1626 0%, #05070c 70%);
}
.load-box { text-align: center; }
.load-title { font-size: 64px; font-weight: 900; letter-spacing: 14px; color: #e8f1ff;
  text-shadow: 0 0 30px #2e7bff, 0 0 90px #123a8f; }
.load-sub { font-size: 15px; letter-spacing: 10px; color: #7fa8d8; margin: 6px 0 22px; }
.load-bar { width: 280px; height: 5px; margin: 0 auto; background: #16233a; border-radius: 3px; overflow: hidden; }
.load-bar span { display: block; height: 100%; width: 20%; background: #3f9dff; border-radius: 3px;
  animation: slide 1.1s ease-in-out infinite alternate; }
@keyframes slide { from { margin-left: 0; } to { margin-left: 80%; } }
#load-msg { margin-top: 14px; font-size: 13px; color: #8ea6c4; }

/* HUD */
#vignette {
  position: fixed; inset: 0; z-index: 5; pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 52%, rgba(10, 2, 2, 0.55) 100%);
}
#hud { position: fixed; inset: 0; z-index: 10; pointer-events: none; }
#title-card {
  position: absolute; top: 14px; left: 16px;
  background: rgba(6, 12, 24, 0.62); border: 1px solid rgba(90, 160, 255, 0.35);
  border-radius: 8px; padding: 8px 14px; backdrop-filter: blur(6px);
}
#title-card .k { font-weight: 900; letter-spacing: 6px; font-size: 18px; color: #eaf3ff;
  text-shadow: 0 0 12px #2e7bff; }
#title-card .sub { display: block; font-size: 10px; letter-spacing: 5px; color: #7fa8d8; }

#stats {
  position: absolute; top: 14px; right: 16px; width: 250px;
  background: rgba(6, 12, 24, 0.62); border: 1px solid rgba(90, 160, 255, 0.35);
  border-radius: 8px; padding: 10px 12px; backdrop-filter: blur(6px);
}
.stat-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.stat-row:last-of-type { margin-bottom: 4px; }
.stat-row label { font-size: 10px; letter-spacing: 1px; color: #9db8d8; width: 86px; }
.bar { flex: 1; height: 9px; background: #131d31; border-radius: 5px; overflow: hidden; }
.bar span { display: block; height: 100%; width: 0%; border-radius: 5px;
  background: linear-gradient(90deg, #ff9a3c, #ff3c3c); transition: width 0.3s; }
.bar.energy span { width: 100%; background: linear-gradient(90deg, #27d8ff, #2e7bff); }
#dest-num { font-size: 12px; font-weight: 700; color: #ffb37a; width: 38px; text-align: right; }
#cam-label { font-size: 10px; letter-spacing: 2px; color: #6f8cab; margin-top: 2px; }

#help {
  position: absolute; bottom: 130px; left: 16px; font-size: 12px; line-height: 1.7;
  color: #9db8d8; background: rgba(6, 12, 24, 0.62);
  border: 1px solid rgba(90, 160, 255, 0.35); border-radius: 8px;
  padding: 8px 12px; backdrop-filter: blur(6px);
}
#help b { color: #eaf3ff; }

/* On-screen Directional Pad (Touch & Mouse) */
#dpad {
  position: absolute; bottom: 16px; left: 16px;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  pointer-events: auto; user-select: none;
}
.dpad-mid { display: flex; gap: 4px; }
.dpad-btn {
  width: 44px; height: 44px; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  color: #eaf3ff; background: rgba(14, 28, 52, 0.75);
  border: 1px solid rgba(90, 160, 255, 0.5); border-radius: 10px;
  cursor: pointer; backdrop-filter: blur(8px);
  touch-action: manipulation; transition: all 0.15s ease;
}
.dpad-btn:hover { background: rgba(46, 123, 255, 0.55); border-color: rgba(120, 190, 255, 0.8); }
.dpad-btn:active, .dpad-btn.held {
  background: rgba(46, 123, 255, 0.9);
  transform: scale(0.92);
}

#actions {
  position: absolute; bottom: 14px; right: 16px;
  display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end;
  max-width: 46vw; pointer-events: auto;
}
#actions button {
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  color: #eaf3ff; background: rgba(20, 40, 70, 0.78);
  border: 1px solid rgba(90, 160, 255, 0.55); border-radius: 8px;
  padding: 10px 14px; cursor: pointer; backdrop-filter: blur(6px);
}
#actions button:hover { background: rgba(46, 123, 255, 0.55); }
#actions button:active, #actions button.held { background: rgba(46, 123, 255, 0.85); }
#actions button:disabled { opacity: 0.4; cursor: default; }

#toast {
  position: fixed; top: 76px; left: 50%; transform: translateX(-50%); z-index: 20;
  font-size: 14px; letter-spacing: 2px; color: #ffe9c9;
  background: rgba(30, 16, 6, 0.78); border: 1px solid rgba(255, 170, 60, 0.5);
  border-radius: 8px; padding: 10px 20px; pointer-events: none;
  transition: opacity 0.4s;
}

@media (max-width: 720px) {
  .load-title { font-size: 38px; letter-spacing: 6px; }
  #help { display: none; }
  #title-card { padding: 6px 10px; }
  #title-card .k { font-size: 15px; letter-spacing: 4px; }
  #stats { width: 175px; padding: 8px 10px; }
  .stat-row label { width: 70px; font-size: 9px; }
  #dpad { bottom: 12px; left: 10px; gap: 3px; }
  .dpad-mid { gap: 3px; }
  .dpad-btn { width: 38px; height: 38px; font-size: 14px; }
  #actions { max-width: 52vw; bottom: 12px; right: 10px; gap: 6px; }
  #actions button { padding: 7px 9px; font-size: 10px; }
}