html,body{height:100%;overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none}#app{display:flex;flex-direction:column;align-items:center;max-width:var(--app-max-width, 524px);margin:0 auto;padding:12px;height:100%}.header{width:100%;display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.title{font-size:2rem;font-weight:800;color:var(--text)}.controls{width:100%;display:flex;gap:8px;margin-bottom:12px}.controls .btn{flex:1}#game-canvas{display:block;border-radius:var(--canvas-radius, 12px)}.score-box{background:var(--score-bg);color:var(--score-text);border-radius:6px;padding:6px 16px;text-align:center;min-width:70px}.score-box .label{font-size:.6rem;text-transform:uppercase;letter-spacing:1px;opacity:.8}.score-box .value{font-size:1.3rem;font-weight:700;font-variant-numeric:tabular-nums}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:16px 0;max-width:280px}.stat-item{background:var(--score-bg);border-radius:6px;padding:12px 8px;text-align:center}.stat-value{font-size:1.5rem;font-weight:800;color:var(--score-text)}.stat-label{font-size:.65rem;text-transform:uppercase;letter-spacing:1px;color:var(--score-text);opacity:.8;margin-top:2px}.difficulty-list{display:flex;flex-direction:column;gap:8px;margin:16px 0;max-width:320px}.difficulty-option{text-align:left;padding:12px 16px!important;font-size:.95rem!important}#tutorial-canvas{display:block;margin:12px auto;border-radius:8px}.tutorial-hint{font-size:.9rem;margin:8px 0 16px;color:var(--text-secondary)}.control-hint{font-size:.8rem;color:var(--hint-color);margin-top:12px;text-align:center}@media(max-height:600px){.title{font-size:1.5rem}.score-box{padding:4px 12px}.score-box .value{font-size:1rem}.controls{margin-bottom:8px}.control-hint{display:none}}@media(orientation:landscape)and (min-width:640px){#app{display:grid;grid-template-columns:1fr 1fr;gap:8px 16px;align-items:center;max-width:900px;margin:0 auto;padding:8px 16px}#game-canvas{grid-column:1;grid-row:1 / span 20;align-self:center;margin-left:auto;margin-right:auto}.control-hint{display:none}.controls{grid-column:2}.controls .btn{font-size:.85rem;padding:6px 8px}}.score-box.score-bump{animation:score-bump .3s ease-out}@keyframes score-bump{0%{transform:scale(1)}40%{transform:scale(1.15);background:#edc53f}to{transform:scale(1)}}.score-box.best-glow{animation:best-glow .6s ease-out}@keyframes best-glow{0%{box-shadow:0 0 #edc22e00}50%{box-shadow:0 0 12px 4px #edc22e99}to{box-shadow:0 0 #edc22e00}}.controls .btn.btn-help{width:36px;height:36px;min-width:36px;max-width:36px;padding:0;border-radius:50%;font-size:1.1rem;font-weight:700;flex:0 0 36px;line-height:36px;align-self:center}.stats-empty-state{padding:24px 16px;color:var(--text-secondary);font-size:.95rem;line-height:1.5}@media(prefers-reduced-motion:reduce){#game-canvas{transition:none}.score-box.score-bump,.score-box.best-glow{animation:none}}