:root {
  --bg1: #06080f;
  --bg2: #0a1230;
  --accent: #5cf2ff;
  --accent2: #ff9d5c;
  --danger: #ff557a;
  --panel: rgba(8, 12, 24, 0.7);
  --text: #e8f0ff;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 800px at 50% -10%, var(--bg2), var(--bg1));
  overflow: hidden;
}

#game {
  position: fixed;
  inset: 0;
  width: 100svw;
  height: 100svh;
  display: block;
}

#hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  color: var(--text);
  background: linear-gradient(180deg, rgba(6,8,16,0.8), rgba(6,8,16,0.0));
  pointer-events: none;
}
#hud .label { opacity: 0.65; margin-right: 8px; letter-spacing: 1px; font-size: 12px; }
#hud .left, #hud .right, #hud .center { display: flex; align-items: baseline; gap: 8px; }
#hud #score, #hud #lives, #hud #power { font-weight: 700; text-shadow: 0 0 8px rgba(92,242,255,0.4); }

#overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: radial-gradient(1200px 800px at 50% -10%, rgba(10,18,48,0.6), rgba(6,8,16,0.9));
  backdrop-filter: blur(2px);
  transition: opacity 200ms ease;
  opacity: 0;
  pointer-events: none;
}
#overlay.show { opacity: 1; pointer-events: auto; }

#overlay .panel {
  background: var(--panel);
  border: 1px solid rgba(92,242,255,0.25);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), inset 0 0 40px rgba(92,242,255,0.08);
  border-radius: 14px;
  padding: 24px 24px 18px;
  width: min(560px, 92vw);
  text-align: center;
}
#overlay h1 { margin: 0 0 8px; letter-spacing: 2px; font-size: clamp(28px, 5vw, 42px); }
#overlay .subtitle { opacity: 0.85; margin: 0 0 16px; }
#overlay .controls { opacity: 0.8; font-size: 14px; margin: 8px 0 16px; display: grid; gap: 6px; }
#overlay button {
  appearance: none;
  border: none;
  background: linear-gradient(180deg, var(--accent), #46b8c3);
  color: #062229;
  border-radius: 999px;
  padding: 12px 24px;
  font-weight: 800;
  letter-spacing: 1px;
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(92,242,255,0.3), inset 0 -6px 16px rgba(0,0,0,0.25);
}
#overlay button:hover { filter: brightness(1.05); }
#overlay button:active { transform: translateY(1px); }

#pause {
  position: fixed;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  font-weight: 900;
  font-size: clamp(28px, 6vw, 64px);
  letter-spacing: 4px;
  color: rgba(255,255,255,0.9);
  text-shadow: 0 0 20px rgba(92,242,255,0.6);
  opacity: 0;
  transition: opacity 150ms ease;
  pointer-events: none;
}
#pause.show { opacity: 1; }

.hide { display: none; }

@media (max-width: 640px) {
  #hud { font-size: 14px; height: 48px; }
}

/* Boss HP bar */
#bossHP {
  position: fixed;
  top: 54px;
  left: 50%;
  transform: translateX(-50%);
  width: min(640px, 92vw);
  padding: 6px 10px;
  pointer-events: none;
}
#bossHP .bar {
  width: 100%;
  height: 10px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
}
#bossHP .fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #ff6a6a, #ffb36a);
  border-radius: 8px;
  box-shadow: 0 0 14px rgba(255,105,97,0.5);
}

/* Ranking */
.ranking { margin: 14px 0 8px; text-align: left; }
.ranking h2 { margin: 8px 0; font-size: 16px; opacity: 0.9; }
#hiscoreList { margin: 0; padding: 0 0 0 1.2em; max-height: 180px; overflow: auto; }
#hiscoreList li { padding: 2px 0; display: flex; justify-content: space-between; gap: 12px; opacity: 0.9; }
#hiscoreList .name { font-weight: 700; }
#hiscoreList .score { opacity: 0.85; }

.summary { margin: 10px 0 6px; }
.summary .final { font-size: 18px; margin-bottom: 8px; }
.entry { display: flex; gap: 8px; justify-content: center; }
.entry input {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(92,242,255,0.25);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
  outline: none;
}
.entry button { padding: 8px 12px; }