*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0f1117;--surface:#1a1d27;--surface-hover:#22263a;--border:#2d3348;--text:#e8eaf0;--text-muted:#8b92a8;--accent:#6c8cff;--accent-hover:#5a7af5;--danger:#ff6b6b;--danger-hover:#ee5a5a;--success:#4ade80;--radius:12px;--shadow:0 4px 24px rgba(0,0,0,0.4)}body,html{height:100%;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}button{cursor:pointer;font-family:inherit;border:none;border-radius:8px;font-size:.9rem;transition:background .15s,opacity .15s}button:disabled{opacity:.5;cursor:not-allowed}input{font-family:inherit}a{color:var(--accent)}