:root{
  --bg1:#071026;
  --accent:#00ff99;
  --panel: rgba(0,0,0,0.6);
  --muted: #9fbfb0;
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial;}
body{background:radial-gradient(circle at 20% 10%, #071026 0%, #0f2430 40%, #08121b 100%);color:#e6f7ff;display:flex;align-items:center;justify-content:center;padding:24px;}

.app{width:980px;max-width:98%;display:flex;flex-direction:column;align-items:center;gap:10px}
.title{margin:0 0 6px 0;color:var(--accent);text-shadow:0 0 8px rgba(0,255,153,0.08)}

.layout{display:flex;gap:16px;align-items:flex-start}
canvas#gameCanvas{
  width:400px;
  height:600px;
  max-width:100%;
  max-height:70vh;
  aspect-ratio:2 / 3;
  border-radius:12px;
  border:3px solid rgba(0,255,153,0.12);
  box-shadow:0 10px 30px rgba(0,0,0,0.6);
  background:#000;
}
.ui{width:480px;max-width:48%;display:flex;flex-direction:column;gap:12px}

/* Panels */
.panel{background:var(--panel);padding:14px;border-radius:12px;border:1px solid rgba(255,255,255,0.04);min-height:120px}
.visible{display:block}
.hidden{display:none}

.btn{padding:10px 14px;border-radius:10px;border:0;cursor:pointer;font-weight:600}
.btn.primary{background:linear-gradient(180deg,var(--accent),#00c57a);color:#011;padding:10px 16px}
.btn.secondary{background:#123; color:#dff;border:1px solid rgba(255,255,255,0.04)}

.btn-row{display:flex;gap:10px;align-items:center}
.muted{color:var(--muted);font-size:13px}
.small{font-size:13px}

/* Level list scroll (vertical) */
.levels-list{max-height:360px;overflow:auto;padding:6px;display:flex;flex-direction:column;gap:8px}
.level-item{display:flex;align-items:center;justify-content:space-between;padding:10px;border-radius:10px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.1));border:1px solid rgba(255,255,255,0.03)}
.level-item.locked{opacity:0.45;filter:grayscale(0.2)}
.level-number{font-weight:700}
.level-meta{color:var(--muted);font-size:13px}
.level-actions{display:flex;gap:6px}

/* HUD */
.hud{display:flex;flex-direction:column;gap:6px;margin-top:6px}
.hud div{background:rgba(0,0,0,0.28);padding:8px;border-radius:8px;}

/* Footer */
.footer{margin-top:8px;color:var(--muted);font-size:13px;text-align:center;}

/* boss hp bar (floating top) */
.boss-bar{position:fixed;left:50%;transform:translateX(-50%);top:18px;width:520px;max-width:92%;height:16px;background:rgba(255,255,255,0.06);border-radius:10px;border:1px solid rgba(255,255,255,0.04);display:none}
.boss-bar .inner{height:100%;background:linear-gradient(90deg,#ff6b6b,#ff2e2e);width:100%;border-radius:10px}

/* ================================
   MOBILE GAME SCREEN
================================ */
@media (max-width: 720px) {
  body {
    padding:10px;
  }

  .app {
    width:100%;
    max-width:100%;
  }

  .layout {
    width:100%;
    flex-direction:column;
    align-items:center;
  }

  canvas#gameCanvas {
    width:min(100%, 400px);
    height:auto;
    max-height:70vh;
  }

  .ui {
    width:100%;
    max-width:400px;
  }
}
/* ================================
   MOBILE GAME CONTROLS
================================ */
.mobile-controls {
  display: none;
}

@media (max-width: 720px) {
  .mobile-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
  }

  .control-row {
    display: flex;
    gap: 8px;
  }

  .control-btn {
    width: 58px;
    height: 50px;
    border: none;
    border-radius: 12px;
    background: rgba(0, 255, 153, 0.18);
    color: #00ff99;
    font-size: 22px;
    font-weight: bold;
    cursor: pointer;
    touch-action: none;
    -webkit-tap-highlight-color: transparent;
  }

  .control-btn:active {
    background: rgba(0, 255, 153, 0.4);
    transform: scale(0.95);
  }
}
canvas#gameCanvas {
  touch-action: none;
}
/* ================================
   GAME PAUSE BUTTON
================================ */
.game-area {
  position: relative;
  display: inline-block;
}

.game-pause-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 42px;
  height: 42px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.65);
  color: #00ff99;
  font-size: 20px;
  cursor: pointer;
  z-index: 10;
}