*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{touch-action:manipulation;width:100%;height:100%;overflow:hidden}:root{--color-bg:#1a1a2e;--color-panel:#16213e;--color-card:#0f3460;--color-accent1:#ff6b6b;--color-accent2:#ffe66d;--color-accent3:#4ecdc4;--color-accent4:#45b7d1;--color-text:#ecf0f1;--color-text-dim:#95a5a6;--color-easy:#2ecc71;--color-medium:#f39c12;--color-hard:#e74c3c;--color-hint:#a29bfe;--radius-sm:8px;--radius-md:16px;--radius-lg:24px;--shadow:0 8px 32px #00000080;--font-main:"Nunito Variable", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;--font-fun:"Nunito Variable", Roboto, "Arial Rounded MT Bold", sans-serif}body{background:var(--color-bg);font-family:var(--font-main);color:var(--color-text);-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}#game-canvas{z-index:0;width:100%;height:100%;display:block;position:fixed;top:0;left:0}.overlay{z-index:10;pointer-events:none;flex-direction:column;justify-content:flex-start;align-items:center;width:100%;height:100%;display:flex;position:fixed;top:0;left:0}.screen{visibility:hidden;opacity:0;transition:opacity .3s,visibility .3s}.screen.active{visibility:visible;opacity:1;pointer-events:all}#menu-screen{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0a0a1ed9;justify-content:center;overflow-y:auto}.menu-container{flex-direction:column;align-items:center;gap:28px;width:92%;max-width:420px;padding:32px 24px;display:flex}.logo{text-align:center}.logo-emoji{margin-bottom:8px;font-size:56px;animation:3s ease-in-out infinite 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h2{color:var(--color-text-dim);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px;font-size:1rem}.style-buttons{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.style-btn{border:2px solid var(--color-accent3);border-radius:var(--radius-sm);background:var(--color-card);color:var(--color-text);font-family:var(--font-main);cursor:pointer;padding:8px 6px;font-size:.85rem;font-weight:700}.style-btn:focus:not(:focus-visible){outline:none}.style-btn:focus-visible{outline:3px solid var(--color-accent2);outline-offset:2px}.style-btn.selected-style{background:#4ecdc440;box-shadow:0 0 10px #4ecdc44d}.difficulty-section h2{color:var(--color-text-dim);text-transform:uppercase;letter-spacing:1px;margin-bottom:14px;font-size:1.1rem}.difficulty-buttons{justify-content:center;gap:12px;display:flex}.diff-btn{background:var(--color-card);border-radius:var(--radius-md);max-width:110px;color:var(--color-text);cursor:pointer;font-family:var(--font-fun);box-shadow:var(--shadow);border:2px solid #0000;flex-direction:column;flex:1;align-items:center;gap:4px;padding:14px 8px;transition:transform .15s,border-color .15s,background .15s;display:flex}.diff-btn:hover,.diff-btn:active{transform:translateY(-4px)scale(1.05)}.diff-emoji{font-size:28px}.diff-label{font-size:1rem;font-weight:700}.diff-desc{color:var(--color-text-dim);font-size:.72rem}.easy-btn{border-color:var(--color-easy)}.easy-btn:hover{background:#2ecc7133}.easy-btn.selected-diff{background:#2ecc7140;box-shadow:0 0 12px 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