:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f1f5f9;--surface:#fff;--surface-2:#f8fafc;--border:#e2e8f0;--accent:#4f46e5;--accent-hover:#4338ca;--accent-light:#eef2ff;--text:#1e293b;--text-muted:#64748b;--text-subtle:#94a3b8;--danger:#ef4444;--danger-bg:#fef2f2;--success:#16a34a;--success-bg:#f0fdf4;--shadow-card:0 1px 3px #00000014, 0 10px 28px #00000012;--shadow-sm:0 1px 2px #0000000d;--r:14px;--r-sm:9px;--r-xs:6px}*,:before,:after{box-sizing:border-box}html,body{height:100%;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Inter,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.5}button,input,textarea{font:inherit}button{cursor:pointer;background:0 0;border:0}button:disabled,input:disabled{opacity:.45;cursor:not-allowed}.loading-screen{min-height:100vh;color:var(--text-muted);justify-content:center;align-items:center;gap:10px;font-size:14px;display:flex}.auth-screen{background:linear-gradient(145deg,#eef2ff 0%,#f1f5f9 55%,#f0fdf4 100%);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.auth-card{background:var(--surface);width:100%;max-width:400px;box-shadow:var(--shadow-card), 0 0 0 1px #0000000a;border-radius:20px;flex-direction:column;gap:20px;padding:36px 32px;display:flex}.brand{justify-content:center;align-items:center;gap:10px;display:flex}.brand-icon{background:var(--accent);color:#fff;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:20px;font-weight:800;display:flex}.brand-name{letter-spacing:-.4px;font-size:22px;font-weight:800}.seg{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;grid-template-columns:1fr 1fr;gap:3px;padding:3px;display:grid}.seg-btn{min-height:36px;color:var(--text-muted);border-radius:8px;font-size:14px;font-weight:600;transition:all .13s}.seg-btn.active{background:var(--surface);color:var(--text);box-shadow:0 1px 3px #0000001a,0 0 0 1px #0000000a}.auth-title{text-align:center;margin:0;font-size:17px;font-weight:700}.auth-desc{color:var(--text-muted);text-align:center;margin:0;font-size:13px;line-height:1.6}.auth-form{flex-direction:column;gap:14px;display:flex}.field{flex-direction:column;gap:6px;display:flex}.field-label{color:var(--text);font-size:13px;font-weight:600}.field-input{border:1.5px solid var(--border);border-radius:var(--r-sm);width:100%;min-height:44px;color:var(--text);background:var(--surface);outline:none;padding:0 14px;font-size:14px;transition:border-color .14s,box-shadow .14s}.field-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.field-input::placeholder{color:var(--text-subtle)}.btn-primary{border-radius:var(--r-sm);background:var(--accent);color:#fff;letter-spacing:-.1px;width:100%;min-height:46px;font-size:15px;font-weight:700;transition:background .14s,transform .1s}.btn-primary:not(:disabled):hover{background:var(--accent-hover)}.btn-primary:not(:disabled):active{transform:translateY(1px)}.btn-primary:disabled{background:var(--text-subtle)}.btn-link{color:var(--accent);cursor:pointer;text-align:center;width:100%;padding:0;font-size:13px;font-weight:600}.btn-link:hover{color:var(--accent-hover)}.msg-error{background:var(--danger-bg);color:var(--danger);border-radius:var(--r-sm);padding:12px 14px;font-size:13px;line-height:1.5}.msg-success{background:var(--success-bg);color:var(--success);border-radius:var(--r-sm);padding:12px 14px;font-size:13px;line-height:1.5}.todo-screen{grid-template-rows:auto auto auto 1fr;min-height:100vh;display:grid}.topbar{background:var(--surface);border-bottom:1px solid var(--border);z-index:10;justify-content:space-between;align-items:center;gap:16px;height:56px;padding:0 24px;display:flex;position:sticky;top:0}.topbar-brand{align-items:center;gap:8px;display:flex}.topbar-icon{background:var(--accent);color:#fff;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:13px;font-weight:800;display:flex}.topbar-name{letter-spacing:-.3px;font-size:16px;font-weight:800}.topbar-right{align-items:center;gap:10px;display:flex}.topbar-email{color:var(--text-muted);font-size:13px}.btn-ghost{border-radius:var(--r-xs);min-height:32px;color:var(--text-muted);padding:0 12px;font-size:13px;font-weight:600;transition:background .12s,color .12s}.btn-ghost:hover{background:var(--surface-2);color:var(--text)}.banner-error{background:var(--danger-bg);color:var(--danger);border-bottom:1px solid #fecaca;padding:10px 24px;font-size:13px;line-height:1.5}.banner-success{background:var(--success-bg);color:var(--success);border-bottom:1px solid #bbf7d0;padding:10px 24px;font-size:13px;line-height:1.5}.todo-body{flex-direction:column;align-content:start;gap:20px;width:100%;max-width:640px;margin:0 auto;padding:40px 24px 80px;display:flex}.todo-page-header{flex-direction:column;gap:4px;display:flex}.todo-page-title{letter-spacing:-.5px;margin:0;font-size:30px;font-weight:800;line-height:1.1}.todo-page-sub{color:var(--text-muted);margin:0;font-size:14px}.add-form{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow-sm);align-items:center;gap:8px;padding:6px;transition:border-color .14s,box-shadow .14s;display:flex}.add-form:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.add-form-input{color:var(--text);background:0 0;border:0;outline:none;flex:1;min-width:0;padding:6px 10px;font-size:15px}.add-form-input::placeholder{color:var(--text-subtle)}.add-form-btn{background:var(--accent);color:#fff;border-radius:9px;flex-shrink:0;min-height:38px;padding:0 18px;font-size:14px;font-weight:700;transition:background .14s,transform .1s}.add-form-btn:not(:disabled):hover{background:var(--accent-hover)}.add-form-btn:not(:disabled):active{transform:scale(.97)}.add-form-btn:disabled{background:var(--text-subtle)}.todo-list{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.todo-section-label{text-transform:uppercase;letter-spacing:.6px;color:var(--text-subtle);padding:10px 2px 4px;font-size:11px;font-weight:700}.todo-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow-sm);align-items:center;gap:12px;padding:13px 14px;transition:border-color .12s,box-shadow .12s;display:flex}.todo-item:hover{border-color:#cbd5e1;box-shadow:0 2px 8px #00000012}.todo-item:hover .todo-del{opacity:1}.todo-check{border:2px solid var(--border);color:#fff;background:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;font-size:11px;font-weight:800;transition:all .14s;display:flex}.todo-check:hover{border-color:var(--accent);background:var(--accent-light)}.todo-check.checked{border-color:var(--accent);background:var(--accent)}.todo-text{overflow-wrap:anywhere;flex:1;font-size:15px;line-height:1.4}.todo-text.done{color:var(--text-subtle);text-decoration:line-through}.todo-del{border-radius:var(--r-xs);width:28px;height:28px;color:var(--text-subtle);opacity:0;flex-shrink:0;justify-content:center;align-items:center;font-size:18px;line-height:1;transition:opacity .12s,background .12s,color .12s;display:flex}.todo-del:hover{background:var(--danger-bg);color:var(--danger)}.empty-state{text-align:center;flex-direction:column;align-items:center;gap:8px;padding:56px 24px;display:flex}.empty-icon{background:var(--accent-light);width:56px;height:56px;color:var(--accent);border-radius:16px;justify-content:center;align-items:center;margin-bottom:8px;font-size:22px;font-weight:800;display:flex}.empty-title{margin:0;font-size:16px;font-weight:700}.empty-sub{color:var(--text-muted);margin:0;font-size:14px}@media (max-width:640px){.auth-card{border-radius:16px;padding:28px 20px}.todo-body{padding:24px 16px 60px}.topbar{padding:0 16px}.topbar-email{display:none}.todo-page-title{font-size:24px}}