:root{--bg: #0a0a0c;--gold: #d4af37;--text: #e0e0e0}body{margin:0;background:var(--bg);color:var(--text);font-family:"Serif",sans-serif}.app-container{height:100vh;display:flex;flex-direction:column;overflow:hidden}.scroll-container{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;align-items:center}header{padding:20px;border-bottom:1px solid #333;text-align:center}.puzzle-area{width:100%;max-width:600px;background:#16161a;padding:30px;border-radius:12px;border:1px solid #444}.grid-container{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:20px}button{background:transparent;border:1px solid var(--gold);color:var(--gold);padding:15px;cursor:pointer;transition:.3s}button:hover{background:var(--gold);color:#000}.feedback-toast{margin-top:20px;padding:10px;border-left:4px solid #ff4444;background:#2a1a1a}.status-bar{font-size:.8rem;color:#888;margin-top:5px}.start-screen{text-align:center;margin-top:50px}h1{color:var(--gold);margin:0}