/* Common theme */
:root{--primary:#ffcc00;--bg:#0a0a2e;--text:#fff;--accent:#f59e0b;--font:'Arial',sans-serif;}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);display:flex;flex-direction:column;align-items:center;min-height:100vh;}
h1{margin:1rem 0 0.5rem;}
button{background:var(--primary);color:#000;border:none;padding:0.5rem 1rem;font-size:1rem;cursor:pointer;}
button:hover{background:var(--accent);}
@media (max-width:600px){body{font-size:90%;}}