:root{--bg:#f4f3ee;--card:#ffffff;--text:#1a1b1c;--muted:#6b7280;--border:#e4e3dd;--accent:#2f6fed;--accent-weak:#e8effc;--danger:#d14343}*{box-sizing:border-box}body{margin:0;font-family:Roboto,PingFang SC,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}.auth-wrap{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 16px}.card{width:100%;max-width:380px;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:28px 24px}.card h1{font-size:20px;margin:0 0 4px}.card .sub{color:var(--muted);font-size:13px;margin:0 0 20px}.banner{border-radius:8px;padding:8px 12px;font-size:13px;margin-bottom:14px;word-break:break-all}.banner.error{background:#fdecec;color:var(--danger)}.banner.info{background:var(--accent-weak);color:var(--accent)}label{display:block;font-size:13px;color:var(--muted);margin:12px 0 4px}input[type=email],input[type=password],input[type=text]{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:#fff;color:var(--text)}input:focus{outline:2px solid var(--accent);outline-offset:0;border-color:transparent}button{cursor:pointer;font-size:14px}.btn{display:inline-block;width:100%;margin-top:18px;padding:10px 12px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-weight:600}.btn:hover{opacity:.92}.container{max-width:560px;margin:0 auto;padding:32px 16px 64px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.topbar h1{font-size:20px;margin:0}.topbar .email{color:var(--muted);font-size:12px}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text);padding:6px 14px;border-radius:8px;font-size:13px}.todo-form{display:flex;gap:8px;margin-bottom:18px}.todo-form input{flex:1 1}.todo-form button{padding:0 18px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-weight:600}.todo-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.todo-item{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:10px 12px}.todo-item .title{flex:1 1;font-size:14px;word-break:break-word}.todo-item.done .title{color:var(--muted);text-decoration:line-through}.icon-btn{border:1px solid var(--border);background:#fff;border-radius:8px;padding:5px 10px;font-size:13px;color:var(--text)}.icon-btn.del{color:var(--danger)}.empty{text-align:center;color:var(--muted);font-size:13px;padding:28px 0}