*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0a0a0a;--surface:#141414;--surface-hover:#1a1a1a;--border:#2a2a2a;--text:#e5e5e5;--text-muted:#888;--accent:#3b82f6;--accent-hover:#2563eb;--success:#22c55e;--danger:#ef4444;--radius:8px}body,html{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}button{cursor:pointer;border:none;font-family:inherit;font-size:13px;font-weight:500;padding:6px 14px;border-radius:var(--radius);transition:background .15s,opacity .15s}.btn-primary{background:var(--accent);color:white}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--surface-hover)}.btn-success{background:var(--success);color:white}.btn-success:hover{opacity:.9}.btn-success:disabled{opacity:.5;cursor:not-allowed}select{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);padding:5px 10px;font-size:13px;font-family:inherit;cursor:pointer;outline:none}select:focus{border-color:var(--accent)}textarea{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);font-family:SF Mono,Fira Code,Consolas,monospace;font-size:13px;line-height:1.6;padding:12px;outline:none;resize:none}textarea:focus{border-color:var(--accent)}