:root{--bg-dark:#1e1e24;--bg-panel:#2a2a35;--text-main:#f3f4f6;--text-muted:#9ca3af;--accent:#3b82f6;--accent-hover:#2563eb;--danger:#ef4444;--border:#3f3f4e}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-main);flex-direction:column;height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;display:flex}#root{flex-direction:column;flex:1;display:flex}.container{width:100%;max-width:1200px;margin:0 auto;padding:2rem}.card{background:var(--bg-panel);border:1px solid var(--border);border-radius:8px;padding:1.5rem}.btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:6px;align-items:center;gap:.5rem;padding:.5rem 1rem;font-weight:500;transition:opacity .2s;display:inline-flex}.btn:hover{opacity:.9}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-danger{background:var(--danger)}.form-group{margin-bottom:1rem}.form-group label{color:var(--text-muted);margin-bottom:.5rem;font-size:.875rem;display:block}input.form-control{background:var(--bg-dark);border:1px solid var(--border);color:#fff;border-radius:6px;outline:none;width:100%;padding:.75rem}input.form-control:focus{border-color:var(--accent)}