*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}.link-btn{background:none;border:none;color:#2563eb;cursor:pointer;font-size:.875rem;padding:0;text-decoration:underline}.link-btn:hover{color:#1d4ed8}body{font-family:system-ui,sans-serif;background:#f0f2f5;color:#1a1a1a;min-height:100vh}main{max-width:480px;margin:48px auto;padding:0 16px}h1{font-size:1.5rem;font-weight:700;margin-bottom:24px;text-align:center;color:#1a1a1a}.tabs{display:flex;border-radius:8px;overflow:hidden;border:1px solid #d0d0d0;margin-bottom:16px}.tabs button{flex:1;padding:10px;border:none;background:#fff;cursor:pointer;font-size:.95rem;color:#555;transition:background .15s}.tabs button.active{background:#4f46e5;color:#fff;font-weight:600}.card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 1px 4px #00000014;margin-bottom:16px}.card h2{font-size:1.1rem;margin-bottom:16px;font-weight:600}label{display:flex;flex-direction:column;gap:4px;margin-bottom:12px;font-size:.85rem;color:#555;font-weight:500}input{padding:9px 12px;border:1px solid #d0d0d0;border-radius:7px;font-size:.95rem;outline:none;transition:border-color .15s}input:focus{border-color:#4f46e5}button[type=submit]{width:100%;padding:10px;background:#4f46e5;color:#fff;border:none;border-radius:7px;font-size:.95rem;font-weight:600;cursor:pointer;margin-top:4px;transition:background .15s}button[type=submit]:hover{background:#4338ca}button[type=submit]:disabled{background:#a5a3f5;cursor:default}.error{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca;border-radius:6px;padding:8px 12px;font-size:.85rem;margin-bottom:12px}.oauth{display:flex;flex-direction:column;gap:10px}.oauth h2{margin-bottom:0}.btn-google{padding:10px;border:1px solid #d0d0d0;border-radius:7px;background:#fff;font-size:.95rem;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:background .15s}.btn-google:hover{background:#f5f5f5}.btn-apple{padding:10px;border:none;border-radius:7px;background:#000;color:#fff;font-size:.95rem;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:background .15s}.btn-apple:hover{background:#222}.user-info table{width:100%;border-collapse:collapse;font-size:.9rem;margin-bottom:16px}.user-info th{text-align:left;width:130px;color:#888;font-weight:500;padding:5px 0}.user-info td{word-break:break-all;padding:5px 0}.user-info tr+tr td,.user-info tr+tr th{border-top:1px solid #f0f0f0}.btn-logout{width:100%;padding:9px;border:1px solid #e5e7eb;border-radius:7px;background:#fff;font-size:.9rem;cursor:pointer;color:#b91c1c;font-weight:500}.btn-logout:hover{background:#fef2f2}.status{text-align:center;margin-top:80px;color:#888;font-size:1rem}