:root {
  --bg: #1a0b2e;
  --bg2: #0d0519;
  --fg: #ede9fe;
  --muted: #a78bfa;
  --accent: #c084fc;
  --accent2: #86efac;
  --danger: #f87171;
  --panel: rgba(30, 15, 50, 0.92);
  --panel-border: #5b21b6;
  --grid: rgba(192, 132, 252, 0.07);
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.6), 0 0 60px rgba(192, 132, 252, 0.15);
}

body[data-theme="light"] {
  --bg: #f5f3ff;
  --bg2: #e9d5ff;
  --fg: #2e1065;
  --muted: #7c3aed;
  --accent: #6d28d9;
  --accent2: #15803d;
  --danger: #b91c1c;
  --panel: rgba(255, 255, 255, 0.94);
  --panel-border: #c4b5fd;
  --grid: rgba(109, 40, 217, 0.08);
  --shadow: 0 12px 40px rgba(76, 29, 149, 0.18);
}

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

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  overflow: hidden;
  overscroll-behavior: none;
  user-select: none;
  -webkit-user-select: none;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* ---------- HUD ---------- */
.hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 10px 14px env(safe-area-inset-top, 10px);
  z-index: 10;
  pointer-events: none;
  font-size: 13px;
}

.hud-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hud-stat {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  padding: 5px 10px;
  border-radius: 8px;
  pointer-events: auto;
  font-weight: 600;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hud-label { color: var(--muted); font-weight: 500; }

.hp { flex: 0 1 140px; min-width: 110px; }
.xp { flex: 1 1 auto; min-width: 60px; }

.hp-bar, .xp-bar {
  flex: 1;
  height: 10px;
  background: rgba(0,0,0,0.3);
  border-radius: 5px;
  overflow: hidden;
  position: relative;
}
#hp-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--danger), #fb923c);
  transition: width 0.2s ease;
}
#xp-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 0.15s ease;
}
#hp-text {
  font-size: 11px;
  color: var(--fg);
  min-width: 56px;
  text-align: right;
}

#theme-toggle,
#fullscreen-btn {
  background: var(--panel);
  color: var(--fg);
  border: 1px solid var(--panel-border);
  padding: 5px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  pointer-events: auto;
  backdrop-filter: blur(8px);
  line-height: 1;
}
#fullscreen-btn { margin-left: auto; }
#fullscreen-btn:hover, #theme-toggle:hover { border-color: var(--accent); }

/* Hint when on portrait mobile */
#rotate-hint {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  z-index: 100;
  text-align: center;
  padding: 24px;
  font-size: 16px;
  gap: 12px;
}
#rotate-hint .icon { font-size: 64px; animation: spin 2s ease-in-out infinite; }
@keyframes spin {
  0%, 100% { transform: rotate(-15deg); }
  50% { transform: rotate(15deg); }
}
body.show-rotate-hint #rotate-hint { display: flex; }

/* ---------- Canvas ---------- */
main {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

/* ---------- Joysticks (mobile) ---------- */
.joystick {
  position: fixed;
  bottom: 30px;
  width: 130px;
  height: 130px;
  z-index: 15;
  display: none;
  touch-action: none;
  /* CRITICAL: the joystick is visual feedback only. Touches must pass
     THROUGH to the canvas below, otherwise a second finger that lands
     on top of an already-visible joystick gets swallowed and the second
     joystick never activates. */
  pointer-events: none;
}
.joystick.active { display: block; }

#joystick-move { left: 24px; }
#joystick-aim { right: 24px; }

.joystick-base {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--panel);
  border: 2px solid var(--panel-border);
  position: relative;
  opacity: 0.7;
  backdrop-filter: blur(6px);
}

.joystick-stick {
  position: absolute;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--fg);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 20px var(--accent);
}

body.is-touch .joystick { display: block; }

/* ---------- Overlays ---------- */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, rgba(26, 11, 46, 0.85), rgba(0, 0, 0, 0.92));
  z-index: 30;
  animation: fade 0.3s ease;
  padding: 16px;
}
body[data-theme="light"] .overlay {
  background: radial-gradient(ellipse at center, rgba(245, 243, 255, 0.85), rgba(196, 181, 253, 0.92));
}
.overlay.hidden { display: none; }

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 28px 32px;
  text-align: center;
  box-shadow: var(--shadow);
  max-width: 420px;
  width: 100%;
}

.panel h1 {
  margin: 0 0 10px;
  font-size: 26px;
  color: var(--accent);
  text-shadow: 0 0 18px rgba(192, 132, 252, 0.4);
}
.panel p { margin: 0 0 18px; color: var(--muted); }

.controls {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  text-align: left;
}
.controls li {
  padding: 5px 0;
  font-size: 14px;
  color: var(--muted);
}

kbd {
  background: var(--bg2);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 2px 7px;
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, monospace;
  color: var(--fg);
}

.panel button {
  background: linear-gradient(135deg, var(--accent), var(--muted));
  color: white;
  border: none;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.3px;
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
  transition: transform 0.1s ease, box-shadow 0.2s ease;
}
.panel button:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(124, 58, 237, 0.55); }
.panel button:active { transform: translateY(0); }

/* ---------- Upgrades ---------- */
.upgrades {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.upgrade-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg2);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  color: var(--fg);
  font: inherit;
  width: 100%;
  transition: transform 0.1s ease, border-color 0.2s ease, background 0.2s ease;
}
.upgrade-card:hover {
  transform: translateX(2px);
  border-color: var(--accent);
  background: rgba(192, 132, 252, 0.1);
}
.upgrade-icon {
  font-size: 28px;
  width: 40px;
  text-align: center;
}
.upgrade-text { flex: 1; }
.upgrade-name { font-weight: 700; color: var(--accent); }
.upgrade-desc { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* ---------- Misc ---------- */
.credit {
  position: fixed;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--muted);
  z-index: 10;
  opacity: 0.6;
}
.credit a { color: var(--muted); text-decoration: none; }

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

/* show appropriate help text */
.mobile-only { display: none; }
body.is-touch .desktop-only { display: none; }
body.is-touch .mobile-only { display: list-item; }

/* tighter HUD on small screens */
@media (max-width: 520px) {
  .hud-stat { padding: 4px 8px; font-size: 12px; }
  .hp { min-width: 90px; }
  #hp-text { display: none; }
  .panel h1 { font-size: 22px; }
}