:root {
  --bg: #050a1f;
  --cyan: #38f6ff;
  --magenta: #ff4de3;
  --panel: rgba(8, 18, 44, 0.82);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: #ecf8ff;
  font-family: 'Segoe UI', Roboto, system-ui, sans-serif;
}

body {
  touch-action: none;
}

#gameCanvas {
  position: fixed;
  inset: 0;
  display: block;
}

#hud {
  position: fixed;
  top: 12px;
  left: 12px;
  right: 12px;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(3, minmax(80px, 160px)) 1fr;
  gap: 10px;
  align-items: center;
  pointer-events: none;
}

.hud-item {
  background: rgba(8, 15, 37, 0.55);
  border: 1px solid rgba(56, 246, 255, 0.35);
  border-radius: 10px;
  padding: 7px 10px;
  box-shadow: 0 0 14px rgba(56, 246, 255, 0.2);
  text-shadow: 0 0 6px rgba(56, 246, 255, 0.8);
  font-size: 14px;
}

#healthBar {
  height: 14px;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid rgba(56, 246, 255, 0.45);
}

#healthFill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #70ff9f, #38f6ff);
  transition: width 0.14s ease;
}

#powerupTimers {
  grid-column: 1 / -1;
  min-height: 22px;
  color: #ffd8f8;
  text-shadow: 0 0 10px rgba(255, 77, 227, 0.95);
  font-size: 14px;
}

#overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  transition: opacity 0.25s ease;
}

#overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.panel {
  width: min(92vw, 520px);
  background: var(--panel);
  border: 1px solid rgba(56, 246, 255, 0.38);
  border-radius: 16px;
  padding: 24px;
  backdrop-filter: blur(6px);
  box-shadow:
    0 0 26px rgba(56, 246, 255, 0.25),
    0 0 22px rgba(255, 77, 227, 0.2);
  text-align: center;
  transform: translateY(0);
  opacity: 1;
  transition: opacity 0.24s ease, transform 0.24s ease;
}

.panel.hidden {
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  position: absolute;
}

h1,
h2 {
  margin: 0 0 12px;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(56, 246, 255, 0.9);
}

button,
input {
  font: inherit;
}

button {
  margin-top: 10px;
  width: 100%;
  padding: 11px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 77, 227, 0.68);
  color: #fff;
  background: linear-gradient(120deg, rgba(56, 246, 255, 0.25), rgba(255, 77, 227, 0.28));
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.16s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 15px rgba(255, 77, 227, 0.7);
}

.save-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  margin: 10px 0;
}

input {
  border-radius: 10px;
  border: 1px solid rgba(56, 246, 255, 0.35);
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  padding: 10px;
}

#highscoreList {
  margin: 0 0 12px;
  padding-left: 0;
  list-style: none;
  text-align: left;
}

#highscoreList li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 0;
}

#pauseBadge {
  position: absolute;
  top: 24px;
  right: 24px;
  border: 1px solid rgba(56, 246, 255, 0.48);
  border-radius: 999px;
  background: rgba(8, 20, 50, 0.7);
  padding: 8px 16px;
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(56, 246, 255, 0.8);
}

#pauseBadge.hidden {
  display: none;
}

#mobilePause {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  right: max(12px, env(safe-area-inset-right));
  z-index: 30;
  width: 52px;
  border-radius: 50%;
  display: none;
}

#mobileControls {
  position: fixed;
  inset: auto 0 0 0;
  height: 160px;
  display: none;
  justify-content: space-between;
  align-items: center;
  padding: 0 18px 12px;
  z-index: 25;
}

.touch-control {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 1px solid rgba(56, 246, 255, 0.4);
  background: rgba(10, 18, 44, 0.42);
  box-shadow: 0 0 18px rgba(56, 246, 255, 0.2);
}

#joystickArea {
  position: relative;
}

#joystickStick {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(255, 77, 227, 0.8);
  background: rgba(255, 77, 227, 0.3);
  transform: translate(-50%, -50%);
}

#fireButton {
  color: #fff;
  font-weight: 700;
  text-shadow: 0 0 8px rgba(255, 77, 227, 1);
}

@media (max-width: 900px), (pointer: coarse) {
  #mobileControls,
  #mobilePause {
    display: flex;
  }

  #hud {
    grid-template-columns: repeat(2, minmax(100px, 1fr));
    max-width: 72vw;
  }
}