:root{--primary:#6366f1;--primary-hover:#4f46e5;--bg:#f8fafc;--surface:#fff;--sidebar-bg:#1e293b;--sidebar-text:#cbd5e1;--sidebar-active:#6366f1;--text:#334155;--text-muted:#94a3b8;--border:#e2e8f0;--danger:#ef4444;--success:#22c55e;--radius:8px;color:var(--text);background:var(--bg);font-family:system-ui,-apple-system,sans-serif;font-size:15px;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh;margin:0}#root{min-height:100vh}button{cursor:pointer;font:inherit;border:none}input[type=text]{font:inherit;border:1px solid var(--border);border-radius:var(--radius);outline:none;padding:8px 12px;transition:border-color .2s}input[type=text]:focus{border-color:var(--primary)}.app{min-height:100vh;display:flex}.sidebar{background:var(--sidebar-bg);width:240px;color:var(--sidebar-text);flex-direction:column;flex-shrink:0;padding:24px 16px;display:flex}.sidebar-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.sidebar-header h2{color:#fff;margin:0;font-size:18px;font-weight:600}.sidebar-header .sidebar-toggle{display:none}.context-list{flex:1;list-style:none;overflow-y:auto}.context-list li{border-radius:var(--radius);cursor:pointer;justify-content:space-between;align-items:center;margin-bottom:4px;padding:10px 12px;transition:background .2s;display:flex}.context-list li:hover{background:#ffffff14}.context-list li.active{background:var(--sidebar-active);color:#fff}.context-list li .action-btns{opacity:0;gap:2px;transition:opacity .2s;display:flex}.context-list li:hover .action-btns{opacity:1}.context-list li .rename-btn,.context-list li .delete-btn{color:inherit;opacity:.7;background:0 0;padding:0 4px;font-size:16px;transition:opacity .2s}.context-list li .rename-btn:hover{opacity:1;color:var(--primary)}.context-list li .delete-btn:hover{opacity:1;color:var(--danger)}.sidebar .add-form{gap:8px;margin-top:12px;display:flex}.sidebar .add-form input{color:#fff;border-radius:var(--radius);background:#ffffff1a;border:1px solid #ffffff26;flex:1;padding:8px 10px;font-size:13px}.sidebar .add-form input::placeholder{color:#fff6}.sidebar .add-form button{background:var(--primary);color:#fff;border-radius:var(--radius);justify-content:center;align-items:center;width:34px;height:34px;font-size:18px;display:flex}.sidebar .add-form button:hover{background:var(--primary-hover)}.list-panel{flex:1;padding:32px;overflow-y:auto}.list-panel.empty{color:var(--text-muted);justify-content:center;align-items:center;font-size:16px;display:flex}.lists-header h2{color:var(--text);margin-bottom:20px;font-size:24px;font-weight:600}.list-tabs{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.list-tab{background:var(--surface);border:1px solid var(--border);color:var(--text);border-radius:20px;padding:8px 16px;font-size:14px;transition:all .2s}.list-tab:hover{border-color:var(--primary);color:var(--primary)}.list-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}.reset-badge{background:#ffffff40;border-radius:10px;margin-left:6px;padding:1px 6px;font-size:11px;display:inline-block}.list-tab:not(.active) .reset-badge{color:var(--primary);background:#6366f11f}.add-list-form{align-items:center;gap:10px;margin-bottom:24px;display:flex}.add-list-form input[type=text]{width:180px}.add-list-form button{background:var(--primary);color:#fff;border-radius:var(--radius);justify-content:center;align-items:center;width:32px;height:32px;font-size:18px;display:flex}.add-list-form button:hover{background:var(--primary-hover)}.reset-toggle{color:var(--text-muted);cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:6px;font-size:13px;display:flex}.reset-toggle input[type=checkbox]{accent-color:var(--primary)}.todo-section{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px}.list-settings{border-bottom:1px solid var(--border);align-items:center;gap:16px;margin-bottom:20px;padding-bottom:16px;display:flex}.list-settings h3{margin-right:auto;font-size:18px;font-weight:600}.delete-list-btn{color:var(--danger);border-radius:var(--radius);border:1px solid var(--danger);background:0 0;padding:6px 12px;font-size:13px;transition:all .2s}.delete-list-btn:hover{background:var(--danger);color:#fff}.todo-items{margin-bottom:16px;list-style:none}.todo-items li{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:12px 0;display:flex}.todo-items li:last-child{border-bottom:none}.todo-items li label{cursor:pointer;flex:1;align-items:center;gap:12px;display:flex}.todo-items li label input[type=checkbox]{width:18px;height:18px;accent-color:var(--primary)}.todo-items li.completed span{color:var(--text-muted);text-decoration:line-through}.todo-items li .action-btns{opacity:0;gap:2px;transition:opacity .2s;display:flex}.todo-items li:hover .action-btns{opacity:1}.todo-items li .rename-btn,.todo-items li .delete-btn{color:var(--text-muted);background:0 0;padding:0 6px;font-size:16px;transition:color .2s}.todo-items li .rename-btn:hover{color:var(--primary)}.todo-items li .delete-btn{font-size:20px}.todo-items li .delete-btn:hover{color:var(--danger)}.add-item-form{gap:10px;display:flex}.add-item-form input[type=text]{flex:1}.add-item-form button{background:var(--primary);color:#fff;border-radius:var(--radius);justify-content:center;align-items:center;width:36px;height:36px;font-size:20px;display:flex}.add-item-form button:hover{background:var(--primary-hover)}.rename-input{font:inherit;border:1px solid var(--primary);border-radius:var(--radius);box-sizing:border-box;outline:none;width:100%;padding:4px 8px;font-size:14px}.context-list li .rename-input{color:#fff;background:#ffffff1a;border-color:#ffffff4d}.rename-tab-input{border-radius:20px;width:120px;padding:6px 12px}.rename-item-input{flex:1}.list-tab-wrapper{display:inline-flex;position:relative}.list-tab .tab-rename{cursor:pointer;margin-left:6px;font-size:13px;display:none}.list-tab:hover .tab-rename{opacity:.6;display:inline}.list-tab .tab-rename:hover{opacity:1;color:var(--primary)}.list-tab.active .tab-rename:hover{color:#fff}.hint{color:var(--text-muted);text-align:center;margin-top:40px}.logout-btn{color:var(--sidebar-text);border-radius:var(--radius);background:#ffffff14;margin-top:12px;padding:8px;font-size:13px;transition:background .2s}.logout-btn:hover{color:#fff;background:#ef44444d}.login-page{background:var(--bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-form{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-direction:column;gap:16px;width:100%;max-width:360px;padding:40px;display:flex}.login-form h1{color:var(--text);margin:0;font-size:24px;font-weight:600}.login-form h2{color:var(--text-muted);margin:0 0 8px;font-size:16px;font-weight:400}.login-form input[type=text],.login-form input[type=password]{font:inherit;border:1px solid var(--border);border-radius:var(--radius);outline:none;padding:10px 14px;transition:border-color .2s}.login-form input:focus{border-color:var(--primary)}.login-form>button[type=submit]{background:var(--primary);color:#fff;border-radius:var(--radius);padding:10px;font-size:15px;font-weight:500;transition:background .2s}.login-form>button[type=submit]:hover{background:var(--primary-hover)}.login-form>button[type=submit]:disabled{opacity:.6;cursor:not-allowed}.login-error{color:var(--danger);margin:0;font-size:13px}.login-divider{color:var(--text-muted);align-items:center;gap:12px;font-size:13px;display:flex}.login-divider:before,.login-divider:after{content:"";background:var(--border);flex:1;height:1px}.google-login-wrapper{justify-content:center;display:flex}.login-switch{color:var(--text-muted);text-align:center;margin:0;font-size:13px}.login-switch button{color:var(--primary);background:0 0;font-size:13px;text-decoration:underline}.sidebar-toggle{z-index:1000;background:var(--sidebar-bg);color:#fff;border-radius:var(--radius);justify-content:center;align-items:center;width:40px;height:40px;font-size:20px;display:none;position:fixed;top:12px;right:12px}@media (width<=768px){.app{flex-direction:column}.sidebar{order:-1;width:100%;padding:16px}.sidebar.collapsed{display:none}.sidebar-toggle{display:flex}.sidebar-header .sidebar-toggle{color:#fff;border-radius:var(--radius);background:#ffffff1a;justify-content:center;align-items:center;width:32px;height:32px;font-size:16px;display:flex;position:static}.list-panel{padding:16px}.lists-header h2{margin-bottom:12px;font-size:20px}.list-tabs{gap:6px}.list-tab{padding:6px 12px;font-size:13px}.add-list-form{flex-wrap:wrap;gap:8px}.add-list-form input[type=text]{flex:1;width:100%;min-width:0}.todo-section{border-radius:8px;padding:16px}.list-settings{flex-wrap:wrap;gap:10px}.list-settings h3{width:100%;font-size:16px}.todo-items li .action-btns,.context-list li .action-btns{opacity:1}.list-tab .tab-rename{opacity:.6;display:inline}}