:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:#1a237e;color:#fafafa;overflow:hidden}.game-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.75rem}.game-container h1{margin:0;font-size:1.75rem;font-weight:700;letter-spacing:-.02em;color:#ffc107;text-shadow:0 0 12px rgba(255,193,7,.5)}.hud{display:flex;gap:1.5rem;font-size:1rem;font-weight:600;color:#ffffffd9}.hud span{color:#ffc107}canvas{border:3px solid #303F9F;background:#283593;border-radius:4px;display:block}.game-over-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;z-index:10}.game-over-overlay h2{margin:0;font-size:2rem;color:#f44336;text-shadow:0 0 16px rgba(244,67,54,.6)}.game-over-overlay p{margin:0;font-size:1.1rem;color:#fffc}.game-over-overlay button{padding:.6rem 1.8rem;font-size:1rem;font-weight:600;border:none;border-radius:6px;background:#ffc107;color:#1a237e;cursor:pointer;transition:transform .1s}.game-over-overlay button:hover{transform:scale(1.05)}