*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#111;--text:#fff;--header-bg:#f5f5f5;--header-border:#ccc;--header-text:#222;--accent:#ffeb3b;--overlay-bg:rgba(0,0,0,0.7)}
[data-theme="dark"]{--bg:#0a0a1a;--header-bg:#16213e;--header-border:#0f3460;--header-text:#e0e0e0;--overlay-bg:rgba(0,0,0,0.8)}
html,body{height:100%;font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);-webkit-user-select:none;user-select:none}
body{display:flex;justify-content:center}
.app{width:100%;max-width:500px;display:flex;flex-direction:column;align-items:center}
.app-header{width:100%;display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--header-bg);border-bottom:1px solid var(--header-border);color:var(--header-text)}
.app-title{font-size:1.15rem;font-weight:700}
.icon-btn{background:none;border:none;cursor:pointer;color:var(--header-text);padding:6px;border-radius:8px;display:flex;align-items:center;justify-content:center;width:36px;height:36px}
.icon-btn:hover{background:rgba(128,128,128,0.15)}
.icon-btn svg{width:20px;height:20px}
[data-theme="light"] .icon-moon{display:none}[data-theme="dark"] .icon-sun{display:none}[data-theme="dark"] .icon-moon{display:block}
.game-container{padding:8px;display:flex;flex-direction:column;align-items:center;gap:8px;width:100%}
.info-bar{display:flex;gap:16px;font-size:.8rem}
.info-bar b{font-weight:700;color:var(--accent)}
.canvas-wrap{position:relative;border-radius:4px;overflow:hidden;line-height:0}
canvas{display:block;width:100%;max-width:448px;height:auto}
.overlay{position:absolute;inset:0;background:var(--overlay-bg);display:flex;align-items:center;justify-content:center}
.overlay.hidden{display:none}
.overlay-text{color:#fff;font-size:1.2rem;font-weight:700;text-align:center}
.dpad{display:none;position:relative;width:140px;height:140px;margin-top:4px}
.dpad-btn{position:absolute;width:46px;height:46px;border:1px solid rgba(255,255,255,0.2);border-radius:10px;background:rgba(255,255,255,0.1);color:#fff;font-size:1.1rem;display:flex;align-items:center;justify-content:center;cursor:pointer}
.dpad-btn:active{background:rgba(255,255,255,0.3)}
.dpad-btn.up{top:0;left:47px}
.dpad-btn.down{bottom:0;left:47px}
.dpad-btn.left{top:47px;left:0}
.dpad-btn.right{top:47px;right:0}
@media(hover:none)and(pointer:coarse){.dpad{display:block}}