:root{
  --ui-bg: rgba(0,0,0,.55);
  --ui-panel: rgba(0,0,0,.72);
  --ui-border: rgba(255,255,255,.12);
  --ui-text: rgba(255,255,255,.92);
  --ui-sub: rgba(255,255,255,.72);
  --hp: #ff3b30;
  --exp: #34c759;
  --rare: #4aa3ff;
  --legend: #ff9f0a;
}
html, body {
  margin: 0;
  padding: 0;
  background: #000;
  height: 100%;
  overflow: hidden;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ui-text);
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
#root {
  position: fixed;
  inset: 0;
  overflow: hidden;
}
canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  image-rendering: auto;
}
/* HUD */
#hud {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  pointer-events: none;
  z-index: 10;
}
#levelBadge {
  width: 54px;
  height: 54px;
  border-radius: 999px;
  background: var(--ui-bg);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 22px;
  border: 1px solid var(--ui-border);
  box-sizing: border-box;
  flex: 0 0 auto;
}
#bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 2px;
  flex: 0 0 auto;
  pointer-events: none;
}
.bar {
  width: 220px;
  height: 12px;
  background: rgba(255,255,255,.18);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
  box-sizing: border-box;
}
.bar.small { height: 9px; }
.bar .fill{
  height: 100%;
  width: 0%;
  border-radius: 999px;
}
.bar .fill.hp { background: var(--hp); }
.bar .fill.exp { background: var(--exp); }

#rightHud {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
  pointer-events: none;
}

#skillCount {
  margin-left: 0;
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--ui-bg);
  border: 1px solid var(--ui-border);
  font-weight: 700;
  color: #ffd60a;
  pointer-events: none;
  display: none;
  white-space: nowrap;
}

#powerBadge{
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--ui-bg);
  border: 1px solid var(--ui-border);
  font-weight: 800;
  color: rgba(255,255,255,.92);
  pointer-events: none;
  display: block;
  white-space: nowrap;
}
#powerBadge .tier{
  font-weight: 900;
  margin-left: 6px;
}

/* Joystick */
#joystick {
  position: absolute;
  left: 18px;
  bottom: 18px;
  width: 140px;
  height: 140px;
  z-index: 11;
  touch-action: none;
}
#joyBase{
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.12);
  box-sizing: border-box;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
#joyKnob{
  position: absolute;
  width: 44px;
  height: 44px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  background: rgba(255,255,255,.85);
  box-shadow: 0 8px 18px rgba(0,0,0,.35);
}

/* Overlay */
#overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  background: rgba(0,0,0,.78);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
  box-sizing: border-box;
}
#overlay.show { display: flex; }
#panel {
  width: min(560px, 100%);
  background: rgba(20,20,20,.92);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 16px;
  padding: 22px;
  box-sizing: border-box;
}
#panel h1 {
  margin: 0 0 8px 0;
  font-size: 34px;
  letter-spacing: .5px;
  text-align: center;
}
#panel p {
  margin: 0 0 16px 0;
  text-align: center;
  color: var(--ui-sub);
}
#choices {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 14px;
}
.skillBtn {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255,255,255,.06);
  border: 2px solid rgba(255,255,255,.10);
  cursor: pointer;
}
.skillBtn:hover { background: rgba(255,255,255,.09); }
.skillIcon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255,255,255,.10);
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 18px;
  flex: 0 0 auto;
}
.skillMeta { flex: 1 1 auto; }
.skillTitleRow {
  display: flex;
  gap: 8px;
  align-items: baseline;
  flex-wrap: wrap;
}
.skillName {
  font-weight: 900;
  font-size: 16px;
}
.skillTier {
  font-size: 12px;
  opacity: .9;
  font-weight: 800;
}
.skillDesc {
  margin-top: 2px;
  font-size: 13px;
  color: rgba(255,255,255,.80);
  line-height: 1.25;
}
.tier1 { color: rgba(255,255,255,.95); }
.tier2 { color: var(--rare); }
.tier3 { color: var(--legend); }

#gameoverStats{
  margin-top: 10px;
  display: none;
  text-align: center;
  color: rgba(255,255,255,.86);
  font-size: 16px;
  line-height: 1.6;
}
#restartRow{
  margin-top: 18px;
  display: none;
  justify-content: center;
}
#restartBtn{
  border: none;
  background: rgba(255,255,255,.92);
  color: #000;
  font-weight: 900;
  font-size: 18px;
  padding: 12px 22px;
  border-radius: 12px;
  cursor: pointer;
}
#restartBtn:hover { background: #fff; }

/* Small help badge */
#help {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 12;
  background: rgba(0,0,0,.45);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 12px;
  color: rgba(255,255,255,.78);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  pointer-events: none;
}


/* Sound toggle */
#soundToggle{
  position: absolute;
  right: 12px;
  bottom: 56px;
  z-index: 12;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.45);
  color: rgba(255,255,255,.92);
  font-size: 20px;
  cursor: pointer;
  pointer-events: auto;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
}
#soundToggle:hover{ background: rgba(0,0,0,.62); }
#soundToggle.muted{ opacity: .55; }

/* Overlay "juicy" animation */
@keyframes popIn {
  0% { transform: scale(0.92); opacity: 0; }
  60% { transform: scale(1.02); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}
#overlay.show #panel { animation: popIn .18s ease-out; transform-origin: 50% 50%; }

@keyframes levelGlow {
  0%, 100% { text-shadow: 0 0 0 rgba(255,214,10,0); transform: scale(1); }
  50% { text-shadow: 0 0 18px rgba(255,214,10,.55); transform: scale(1.03); }
}
#overlay.mode-levelup #overlayTitle{ animation: levelGlow .9s ease-in-out infinite; }
@media (max-width: 420px){
  .bar { width: 180px; }
  #joystick { width: 128px; height: 128px; }
}