*{margin:0;padding:0;box-sizing:border-box}:root{--accent: #00ff00;--accent-half: rgba(0, 255, 0, .5);--accent-third: rgba(0, 255, 0, .3);--accent-tenth: rgba(0, 255, 0, .1);--bg: #0a0a0a;--container-bg: #111;--canvas-bg: #222;--grid-color: #333;--shadow-container: 0 0 20px var(--accent-half), 0 0 40px var(--accent-third), inset 0 0 10px var(--accent-tenth);--shadow-title: 0 0 10px var(--accent), 0 0 20px var(--accent), 0 0 30px var(--accent);--anim-title: titleGlow 2s ease-in-out infinite alternate;--shadow-score: 0 0 5px var(--accent);--shadow-btn: 0 0 10px var(--accent-third), inset 0 0 10px var(--accent-tenth);--shadow-btn-hover: 0 0 20px var(--accent-half), 0 0 40px var(--accent-third);--shadow-theme-btn: 0 0 8px var(--accent-third);--shadow-gameover: 0 0 10px #ff0040, 0 0 20px #ff0040;--anim-gameover: blink .5s ease-in-out infinite alternate}body.theme-retro{--accent: #b8860b;--accent-half: rgba(184, 134, 11, .3);--accent-third: rgba(184, 134, 11, .2);--accent-tenth: rgba(184, 134, 11, .08);--bg: #0d0900;--container-bg: #1a1200;--canvas-bg: #140c00;--grid-color: #201400;--shadow-container: none;--shadow-title: none;--anim-title: none;--shadow-score: none;--shadow-btn: none;--shadow-btn-hover: none;--shadow-theme-btn: none;--shadow-gameover: none;--anim-gameover: none}body{background:var(--bg);height:100vh;overflow:hidden;display:flex;flex-direction:column;justify-content:center;align-items:center;font-family:"Press Start 2P",monospace;color:#fff;padding:20px}#game-container{position:relative;width:720px;max-width:90%;border:4px solid var(--accent);border-radius:4px;box-shadow:var(--shadow-container);background:var(--container-bg);overflow:hidden}#gameCanvas{display:block;width:100%;height:auto;background:var(--container-bg)}.overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;background:#000000e6;z-index:100;transition:opacity .3s ease}.overlay.hidden{display:none}.game-title{font-size:32px;color:var(--accent);text-shadow:var(--shadow-title);letter-spacing:6px;margin-bottom:15px;animation:var(--anim-title)}@keyframes titleGlow{0%{text-shadow:0 0 10px var(--accent),0 0 20px var(--accent)}to{text-shadow:0 0 20px var(--accent),0 0 40px var(--accent),0 0 60px var(--accent)}}.game-subtitle{font-size:8px;color:#888;margin-bottom:25px}.controls-hint{font-family:Hiragino Sans,Meiryo,sans-serif;font-size:11px;color:#aaa;margin-bottom:10px}.color-selectors-inline{display:flex;gap:10px;margin:10px 0;flex-wrap:wrap;justify-content:center}#score-overlay{position:absolute;top:8px;left:8px;background:#000000b3;padding:6px 10px;border:2px solid var(--accent);border-radius:4px;font-size:10px;color:var(--accent);z-index:50;text-shadow:var(--shadow-score)}#score-overlay.hidden{display:none}.retro-btn{font-family:"Press Start 2P",monospace;font-size:12px;padding:12px 30px;background:#222;color:var(--accent);border:3px solid var(--accent);cursor:pointer;margin-top:20px;transition:all .2s ease;box-shadow:var(--shadow-btn)}.retro-btn:hover{background:var(--accent);color:#000;box-shadow:var(--shadow-btn-hover);transform:scale(1.05)}.retro-btn:active{transform:scale(.98)}.gameover-text{font-size:20px;color:#ff0040;text-shadow:var(--shadow-gameover);animation:var(--anim-gameover);margin-bottom:15px}@keyframes blink{0%{opacity:1}to{opacity:.5}}.final-score{font-size:12px;color:gold;text-shadow:0 0 10px #ffd700;margin-bottom:5px}#color-selectors{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap;justify-content:center}.color-selector{display:flex;flex-direction:column;align-items:center;gap:5px}.color-selector label{font-size:8px;color:#888}.color-selector select{font-family:"Press Start 2P",monospace;font-size:7px;padding:5px 8px;background:#222;color:var(--accent);border:2px solid var(--accent);cursor:pointer;outline:none}.color-selector select:focus{box-shadow:0 0 10px var(--accent-half)}.gameclear-text{font-size:18px;color:gold;text-shadow:0 0 10px #ffd700,0 0 20px #ffd700;animation:rainbow 3s linear infinite;margin-bottom:15px}@keyframes rainbow{0%{color:red;text-shadow:0 0 20px #ff0000}17%{color:#f80;text-shadow:0 0 20px #ff8800}33%{color:#ff0;text-shadow:0 0 20px #ffff00}50%{color:#0f0;text-shadow:0 0 20px #00ff00}67%{color:#08f;text-shadow:0 0 20px #0088ff}83%{color:#80f;text-shadow:0 0 20px #8800ff}to{color:red;text-shadow:0 0 20px #ff0000}}#theme-selector,.theme-selector-inline{display:flex;gap:8px;margin-top:20px}.theme-btn{font-family:"Press Start 2P",monospace;font-size:7px;padding:6px 12px;background:#111;color:#555;border:2px solid #444;cursor:pointer;transition:all .2s ease}.theme-btn.active{color:var(--accent);border-color:var(--accent);box-shadow:var(--shadow-theme-btn)}.theme-btn:hover:not(.active){color:#999;border-color:#666}@media (max-width: 430px){body{padding:10px}.game-title{font-size:24px}.retro-btn{font-size:10px;padding:10px 24px}#color-selectors{gap:8px}.color-selector select{font-size:6px;padding:4px 6px}}