*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;margin:0;background:#0d0221;color:#fff;font-family:"Exo 2",Segoe UI,Tahoma,Geneva,Verdana,sans-serif}body{overflow:hidden;touch-action:none;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}#home-screen{overflow-y:auto;-webkit-overflow-scrolling:touch;touch-action:pan-y}#home-screen *{-webkit-user-select:text;user-select:text;touch-action:manipulation}#game-container{position:relative;width:100vw;height:100vh;height:100dvh;overflow:hidden}#game-canvas{display:block;width:100%;height:100%}#hud{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}#problem-text{position:absolute;top:3.5rem;left:50%;transform:translate(-50%);text-align:center;z-index:1}@media (min-width: 640px){#problem-text{top:2rem}}#score-text{position:absolute;top:1rem;left:.75rem}@media (min-width: 640px){#score-text{top:2rem;left:1.5rem}}.fullscreen-button{position:absolute;padding:.5rem 1rem;border:1px solid rgba(255,255,255,.2);border-radius:999px;background:#0e244e99;color:#fff;font-size:.75rem;font-weight:600;letter-spacing:.15em;text-transform:uppercase;cursor:pointer;transition:transform .2s ease,box-shadow .3s ease;pointer-events:auto;touch-action:manipulation;-webkit-tap-highlight-color:transparent;z-index:60}@media (min-width: 640px){.fullscreen-button{top:1.5rem!important;right:1.5rem!important;padding:.6rem 1.2rem;font-size:.85rem;letter-spacing:.18em}}@media (max-width: 639px){#home-screen,#two-player-setup{padding-top:4rem!important}}@media (max-width: 639px){#settings-button,#two-player-settings-button,.fullscreen-button{top:1.25rem!important;height:36px;display:flex;align-items:center;justify-content:center}}.fullscreen-button:hover{transform:translateY(-2px);box-shadow:0 0 18px #00bfff8c}.hidden{display:none}#two-player-game{overflow:hidden;position:fixed;top:0;left:0;right:0;bottom:0}#settings-modal{-webkit-overflow-scrolling:touch}#settings-modal *{-webkit-user-select:text;user-select:text;touch-action:manipulation}#settings-modal select,#settings-modal input{cursor:pointer}#settings-modal input[readonly]{cursor:text}#settings-modal input[readonly]:focus{background:#ffffff1a;border-color:#00bfff}button[data-enabled]{cursor:pointer}button[data-enabled=true]{background:#00bfff}button[data-enabled=false]{background:#fff3}button[data-enabled=false] span{transform:translate(0)}button[data-enabled=true] span{transform:translate(6)}.settings-color-button.selected{border-color:#fff;border-width:3px;box-shadow:0 0 15px #00bfffcc}#settings-modal .space-y-6::-webkit-scrollbar{width:8px}#settings-modal .space-y-6::-webkit-scrollbar-track{background:#ffffff0d;border-radius:4px}#settings-modal .space-y-6::-webkit-scrollbar-thumb{background:#00bfff80;border-radius:4px}#settings-modal .space-y-6::-webkit-scrollbar-thumb:hover{background:#00bfffb3}#settings-modal select{color:#fff;background-color:#ffffff0d}#settings-modal select option{background-color:#0d0221;color:#fff;padding:8px}#settings-modal select:focus{outline:none;border-color:#00bfff}#settings-modal select option:checked{background-color:#00bfff4d;color:#fff}#settings-modal select option:hover{background-color:#00bfff33}.mobile-only{display:none}@media (pointer: coarse){.mobile-only{display:block}}