:root{--bg: #f6f7f9;--surface: #ffffff;--border: #e2e5ea;--text: #1f2430;--muted: #6b7280;--primary: #2f6fed;--primary-hover: #245bd0;--danger: #c0392b;--success: #1e8e5a;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 4px 16px rgba(0, 0, 0, .06)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.45}.app{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.25rem;background:var(--surface);border-bottom:1px solid var(--border)}.topbar .brand{font-weight:700;color:var(--text);text-decoration:none}.topbar .user{display:flex;align-items:center;gap:.75rem}.topbar .email{color:var(--muted);font-size:.85rem}.content{flex:1;width:100%;max-width:760px;margin:0 auto;padding:1.5rem 1.25rem 4rem}button{font:inherit;cursor:pointer;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);padding:.5rem .9rem}button.primary{background:var(--primary);border-color:var(--primary);color:#fff}button.primary:hover{background:var(--primary-hover)}button.signout{font-size:.85rem;padding:.35rem .7rem}button:disabled{opacity:.6;cursor:not-allowed}label{display:block;font-weight:600;margin-bottom:.3rem;font-size:.9rem}input[type=text],input[type=email],input[type=url],input[type=number],input[type=date],textarea{width:100%;padding:.5rem .65rem;border:1px solid var(--border);border-radius:var(--radius);background:#fff;font:inherit}textarea{resize:vertical;min-height:90px}