:root{--bg-main:#121212;--bg-panel:#1e1e1e;--bg-surface:#2b2b2b;--bg-canvas:#000;--border-color:#333;--border-focus:#555;--text-main:#e0e0e0;--text-muted:#888;--text-accent:#00e5ff;--brand-color:#f36;--font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Open Sans","Helvetica Neue",sans-serif;--font-mono:"JetBrains Mono","Fira Code",Consolas,Monaco,"Courier New",Courier,monospace}*{box-sizing:border-box;margin:0;padding:0}body,html{background-color:var(--bg-main);color:var(--text-main);font-family:var(--font-sans);height:100vh;width:100vw;overflow:hidden;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-weight:500;color:#fff}a{color:var(--text-accent);text-decoration:none}button{cursor:pointer;font-family:inherit;border:none;background:none}.btn-primary{background-color:var(--brand-color);color:#fff;padding:.5rem 1rem;border-radius:4px;font-weight:500;transition:opacity .2s}.btn-primary:hover{opacity:.9}.btn-secondary{background-color:var(--bg-surface);color:var(--text-main);padding:.5rem 1rem;border-radius:4px;border:1px solid var(--border-color);transition:background-color .2s}.btn-secondary:hover{background-color:var(--border-color)}.panel{background-color:var(--bg-panel);border:1px solid var(--border-color);border-radius:8px}