html,body,#root{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background:radial-gradient(circle at top,#38bdf8,#0f172a);font-family:system-ui,sans-serif;touch-action:manipulation}.screen{width:100vw;height:100vh;display:flex}button,input{font-size:22px;padding:16px;margin:10px 0;border-radius:16px;border:none;width:100%;max-width:420px}button{font-size:22px;padding:16px;margin:10px 0 50px;border-radius:16px;border:none;background:linear-gradient(135deg,#facc15,#4ade80);color:#042f2e;font-weight:700;cursor:pointer;position:relative}button.round{border-radius:50%;width:150px;height:150px;padding:0}button.round:after{border-radius:50%;height:50%}input{font-size:18px;border-radius:12px;border:none;padding:12px}