:root{font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{margin:0;padding:0;box-sizing:border-box}:root{--mario-red: #e52521;--mario-blue: #049cd8;--mario-yellow: #fbd000;--mario-green: #43b047;--sky-blue: #5c94fc;--dark-bg: #1a1a2e;--darker-bg: #0f0f1a}html,body,#root{width:100%;height:100%;overflow:hidden}body{font-family:Segoe UI,Arial,sans-serif;background:linear-gradient(135deg,var(--dark-bg) 0%,var(--darker-bg) 100%);color:#fff}.app{display:flex;flex-direction:column;height:100vh;width:100vw}.header{padding:1rem 2rem;text-align:center;background:#0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:2px solid var(--mario-red)}.title{font-size:2rem;font-weight:700;background:linear-gradient(90deg,var(--mario-red),var(--mario-yellow));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-shadow:none}.subtitle{font-size:.9rem;color:#ffffffb3;margin-top:.5rem}.game-container{flex:1;display:flex;justify-content:center;align-items:center;padding:1rem;background:radial-gradient(ellipse at center,var(--sky-blue) 0%,var(--dark-bg) 100%)}.game-canvas{border-radius:8px;box-shadow:0 0 30px #e525214d,0 0 60px #049cd833,inset 0 0 20px #00000080;overflow:hidden}.game-canvas canvas{border-radius:8px}.footer{padding:.75rem 2rem;text-align:center;background:#0000004d;border-top:1px solid rgba(255,255,255,.1);font-size:.85rem;color:#fff9}.footer a{color:var(--mario-yellow);text-decoration:none;transition:color .2s ease}.footer a:hover{color:var(--mario-red);text-decoration:underline}@media(max-width:768px){.header{padding:.5rem 1rem}.title{font-size:1.5rem}.subtitle{font-size:.75rem}.game-container{padding:.5rem}.footer{padding:.5rem 1rem;font-size:.75rem}}.game-canvas{user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;touch-action:none}