:root {
  --hud-neon: #6affff;
  --hud-text: #e9f7ff;
  --hud-panel: rgba(0, 0, 0, 0.45);
  --hud-border: rgba(106, 255, 255, 0.35);
}

#gameHud {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  color: var(--hud-text);
  font-family: 'Space Grotesk', sans-serif;
}

.hud-left {
  position: absolute;
  top: clamp(10px, 2vh, 18px);
  left: clamp(10px, 1.8vw, 20px);
  display: flex;
  flex-direction: column;
  gap: clamp(6px, 1.2vh, 12px);
  align-items: flex-start;
}

.hud-aux {
  position: absolute;
  left: 16px;
  bottom: 70px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
  pointer-events: auto;
  z-index: 110;
}

.hud-aux .hud-btn {
  pointer-events: auto;
  cursor: pointer;
  border-radius: 12px;
  padding: 6px 12px;
  font: 600 12px 'Oxanium', sans-serif;
  letter-spacing: 1px;
  box-shadow: 0 0 15px rgba(0, 255, 255, 0.35);
  border: 2px solid var(--hud-neon);
  color: var(--hud-neon);
  background: rgba(0, 255, 255, 0.12);
}

.hud-aux .hud-btn.legend {
  border-color: #ff4444;
  color: #ff4444;
  background: rgba(255, 0, 0, 0.15);
  box-shadow: 0 0 15px rgba(255, 68, 68, 0.35);
}

.hud-block {
  background: var(--hud-panel);
  border: 1px solid var(--hud-border);
  border-radius: clamp(10px, 1.4vw, 14px);
  padding: clamp(8px, 1.4vh, 12px) clamp(10px, 1.6vw, 16px);
  backdrop-filter: blur(6px);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.12);
}

.hud-score {
  font-size: clamp(14px, 2.2vw, 22px);
  font-weight: 600;
  line-height: 1.4;
  text-shadow: 0 0 8px rgba(0, 0, 0, 0.6);
}

.hud-left .hud-btn {
  pointer-events: auto;
  cursor: pointer;
  border-radius: 12px;
  padding: 6px 14px;
  font: 600 clamp(12px, 1.6vw, 14px) 'Oxanium', sans-serif;
  letter-spacing: 1px;
  box-shadow: 0 0 15px rgba(0, 255, 255, 0.35);
  border: 2px solid var(--hud-neon);
  color: var(--hud-neon);
  background: rgba(0, 255, 255, 0.12);
}

.hud-left .hud-btn.legend {
  border-color: #ff4444;
  color: #ff4444;
  background: rgba(255, 0, 0, 0.15);
  box-shadow: 0 0 15px rgba(255, 68, 68, 0.35);
}

.hud-center {
  position: absolute;
  top: clamp(8px, 1.6vh, 16px);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(4px, 0.8vh, 8px);
}

#levelDisplay {
  font-family: 'Oxanium', sans-serif;
  font-size: clamp(16px, 2.6vw, 28px);
  color: var(--hud-neon);
  text-shadow: 0 0 12px rgba(106, 255, 255, 0.6);
}

#livesDisplay {
  font-size: clamp(16px, 2.4vw, 26px);
  color: #ff4b4b;
  text-shadow: 0 0 10px rgba(255, 0, 0, 0.5);
}

#hpContainer {
  position: absolute;
  left: 50%;
  bottom: clamp(14px, 3.5vh, 32px);
  transform: translateX(-50%);
  width: clamp(220px, 40vw, 360px);
  height: clamp(18px, 3.2vh, 32px);
  background: rgba(0, 0, 0, 0.35);
  border: 3px solid var(--hud-neon);
  border-radius: 999px;
  overflow: hidden;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
  pointer-events: none;
}

#hpFill {
  height: 100%;
  width: 100%;
  background: linear-gradient(to right, #0f0, #00ff00);
  border-radius: 999px;
  transition: width 0.5s ease;
  box-shadow: 0 0 12px rgba(0, 255, 0, 0.7);
}

.hud-actions {
  position: fixed;
  top: clamp(10px, 2vh, 20px);
  right: clamp(10px, 2vw, 20px);
  display: flex;
  flex-direction: column;
  gap: clamp(8px, 1.6vh, 12px);
  pointer-events: auto;
  z-index: 999;
}

.hud-actions .icon-btn {
  width: clamp(34px, 4vw, 44px);
  height: clamp(34px, 4vw, 44px);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 2px solid var(--hud-neon);
  background: rgba(0, 0, 0, 0.7);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
  cursor: pointer;
  pointer-events: auto;
}

.hud-actions .pause-btn {
  border-radius: 50%;
  color: #ff5555;
  font-size: clamp(18px, 3vw, 26px);
  border-color: rgba(255, 255, 255, 0.7);
  box-shadow: none;
}

#exitBtn {
  position: fixed;
  right: clamp(12px, 2vw, 20px);
  bottom: clamp(14px, 3vh, 30px);
  pointer-events: auto;
}

#exitBtn.hud-exit {
  background: #b00000;
  color: #fff;
  border: 2px solid #fff;
  border-radius: 12px;
  padding: 8px 16px;
  font: 700 clamp(12px, 1.8vw, 16px) 'Oxanium', sans-serif;
  letter-spacing: 1px;
  box-shadow: 0 0 18px rgba(255, 0, 0, 0.4);
  cursor: pointer;
}

.hud-credit {
  position: absolute;
  left: clamp(10px, 1.8vw, 20px);
  bottom: clamp(10px, 2.2vh, 18px);
  font: 600 clamp(10px, 1.4vw, 14px) 'Space Grotesk', sans-serif;
  letter-spacing: 1px;
  opacity: 0.85;
  text-shadow: 0 0 6px rgba(0, 0, 0, 0.7);
}

.hud-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: min(92vw, 420px);
  padding: clamp(12px, 2vw, 20px) clamp(14px, 2.6vw, 24px);
  border-radius: 16px;
  font-family: 'Oxanium', sans-serif;
  font-size: clamp(14px, 2.2vw, 20px);
  line-height: 1.3;
  text-align: center;
  z-index: 9999;
  display: none;
  pointer-events: auto;
}

.hud-popup.stats {
  background: rgba(0, 10, 40, 0.92);
  border: 2px solid var(--hud-neon);
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.5);
  color: #fff;
}

.hud-popup.legend {
  background: rgba(99, 8, 8, 0.88);
  border: 2px solid #ff4444;
  box-shadow: 0 0 30px rgba(255, 68, 68, 0.5);
  color: #fff;
  text-align: left;
}

@media (max-width: 900px) {
  .hud-left { gap: 8px; }
  .hud-left .hud-btn { padding: 6px 12px; }
  #exitBtn.hud-exit { padding: 6px 12px; }
}

@media (max-width: 700px) {
  .hud-left { left: 8px; top: 8px; }
  .hud-credit { display: none; }
}

@media (max-height: 500px) and (orientation: landscape) {
  .hud-center { top: 4px; gap: 2px; }
  #hpContainer { bottom: 8px; }
}

#joystick {
  position: fixed;
  bottom: clamp(70px, 12vh, 120px);
  left: clamp(18px, 4vw, 50px);
  width: clamp(80px, 16vw, 120px);
  height: clamp(80px, 16vw, 120px);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  touch-action: none;
  z-index: 999;
  display: none;
  pointer-events: auto;
}

#joystickKnob {
  width: clamp(36px, 7vw, 50px);
  height: clamp(36px, 7vw, 50px);
  background: var(--hud-neon);
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(106, 255, 255, 0.6);
}

#touchButtons {
  position: fixed;
  right: clamp(18px, 5vw, 110px);
  bottom: clamp(88px, 14vh, 150px);
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 6px;
  z-index: 999;
  pointer-events: auto;
}

#jumpButton,
#fireButton,
#cycleButton,
#changeViewButton {
  width: clamp(52px, 10vw, 68px);
  height: clamp(52px, 10vw, 68px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
  pointer-events: auto;
  box-sizing: border-box;
  padding: 4px;
  font: 700 clamp(9px, 1.8vw, 11px) 'Oxanium', sans-serif;
  line-height: 1.1;
  letter-spacing: 0.6px;
  text-align: center;
}

#jumpButton {
  background: rgba(255, 255, 0, 0.25);
  color: #ff0;
  border: 3px solid #ff0;
  box-shadow: 0 0 18px rgba(255, 255, 0, 0.6);
}

#fireButton {
  background: rgba(255, 0, 0, 0.25);
  color: #f00;
  border: 3px solid #f00;
  box-shadow: 0 0 18px rgba(255, 0, 0, 0.6);
}

#cycleButton {
  background: rgba(0, 255, 255, 0.18);
  color: #7fe7ff;
  border: 3px solid #7fe7ff;
  box-shadow: 0 0 18px rgba(127, 231, 255, 0.55);
}

#changeViewButton {
  background: rgba(255, 120, 200, 0.2);
  color: #ff78c8;
  border: 3px solid #ff78c8;
  box-shadow: 0 0 18px rgba(255, 120, 200, 0.55);
}

@media (max-width: 900px) {
  .hud-aux {
    left: 12px;
    bottom: 170px;
    gap: 6px;
  }
}