.pa-shell{--pa-nav-w:240px;--pa-content-max:760px;height:calc(100vh - var(--er-nav-offset,3.5rem));background:var(--background);width:100%;min-height:480px;transition:height .3s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.pa-nav{width:var(--pa-nav-w);background:color-mix(in srgb,var(--muted)45%,var(--background));border-right:1px solid var(--border);flex-direction:column;flex:none;min-height:0;transition:width .22s,opacity .22s;display:flex;overflow:hidden}.pa-shell.nav-collapsed .pa-nav{opacity:0;pointer-events:none;border-right-color:#0000;width:0!important}.pa-nav-head{border-bottom:1px solid var(--border);flex:none;align-items:center;gap:8px;padding:12px 10px 10px;display:flex}.pa-nav-brand{letter-spacing:-.02em;min-width:0;color:var(--foreground);flex:1;font-size:13px;font-weight:600}.pa-nav-iconbtn{border:1px solid var(--border);width:32px;height:32px;color:var(--muted-foreground);cursor:pointer;background:0 0;border-radius:8px;flex:none;justify-content:center;align-items:center;display:flex}.pa-nav-iconbtn:hover{color:var(--foreground);background:var(--accent)}.pa-nav-pinned{border-bottom:1px solid var(--border);flex:none;padding:8px 10px 10px}.pa-nav-newchat{border:1px solid var(--border);background:var(--background);width:100%;color:var(--foreground);cursor:pointer;text-align:left;border-radius:10px;align-items:center;gap:8px;padding:9px 12px;font-size:13px;font-weight:500;display:flex}.pa-nav-newchat:hover{background:var(--accent)}.pa-nav-scroll{flex:1;min-height:0;padding-bottom:8px;overflow:hidden auto}.pa-nav-section-head{letter-spacing:.04em;text-transform:uppercase;color:var(--muted-foreground);align-items:center;gap:6px;padding:10px 14px 4px;font-size:11px;font-weight:600;display:flex}.pa-nav-empty{color:var(--muted-foreground);margin:0;padding:10px 14px;font-size:11px}.pa-nav-item{width:calc(100% - 12px);color:var(--muted-foreground);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:6px;align-items:center;gap:6px;margin:1px 6px;padding:7px 10px;font-size:12.5px;line-height:1.3;display:flex;position:relative}.pa-nav-item:hover{background:var(--accent);color:var(--foreground)}.pa-nav-item.active{background:color-mix(in srgb,var(--primary)12%,transparent);color:var(--foreground);font-weight:600}.pa-nav-item.active:before{content:"";background:var(--primary);border-radius:2px;width:3px;position:absolute;top:6px;bottom:6px;left:0}.pa-nav-item-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.pa-nav-item-actions{opacity:0;pointer-events:none;flex:none;align-items:center;gap:2px;display:flex}.pa-nav-item:hover .pa-nav-item-actions{opacity:1;pointer-events:auto}.pa-nav-item-actions .del{color:var(--muted-foreground);border-radius:4px;padding:2px 4px;display:inline-flex}.pa-nav-item-actions .del:hover{background:color-mix(in srgb,var(--destructive)10%,transparent);color:var(--destructive)}.pa-nav-expand{z-index:5;border:1px solid var(--border);background:var(--background);width:32px;height:32px;color:var(--muted-foreground);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;display:flex;position:absolute;top:10px;left:8px;box-shadow:0 1px 2px #0000000d}.pa-nav-expand:hover{color:var(--foreground);background:var(--accent)}.pa-resize{cursor:col-resize;z-index:4;flex:none;width:5px;margin:0 -2px;position:relative}.pa-resize:after{content:"";background:0 0;transition:background .15s;position:absolute;inset:0 2px}.pa-resize:hover:after,.pa-resize.active:after{background:color-mix(in srgb,var(--primary)40%,transparent)}.pa-main-col{flex-direction:column;flex:1;min-width:0;min-height:0;display:flex;position:relative}.pa-shell.preview-open .pa-main-col{flex:44%;min-width:360px}.pa-chat-toolbar{max-width:calc(var(--pa-content-max) + 48px);box-sizing:border-box;flex:none;align-items:center;gap:8px;width:100%;margin:0 auto;padding:8px 24px 0;display:flex}.pa-shell:not(.preview-open) .pa-chat-toolbar{padding-right:56px}.pa-chat-title{text-overflow:ellipsis;white-space:nowrap;min-width:0;color:var(--muted-foreground);flex:1;font-size:12px;overflow:hidden}.pa-toolbar-btn{cursor:pointer;border:1px solid var(--border);background:var(--background);color:var(--muted-foreground);white-space:nowrap;border-radius:8px;align-items:center;gap:5px;padding:4px 10px;font-family:ui-monospace,SF Mono,monospace;font-size:11px;display:inline-flex}.pa-toolbar-btn:hover,.pa-toolbar-btn.active{color:var(--foreground);border-color:var(--primary)}.pa-messages{scroll-behavior:smooth;flex-direction:column;flex:1;min-height:0;padding-bottom:12px;display:flex;overflow:hidden auto}.pa-messages.welcome-mode{background:radial-gradient(ellipse 70% 50% at 50% 30%,color-mix(in srgb,var(--primary)6%,transparent),transparent 70%);justify-content:center}.pa-loading{color:var(--muted-foreground);justify-content:center;align-items:center;gap:8px;padding:40px 0;font-size:13px;display:flex}.pa-welcome{box-sizing:border-box;flex-direction:column;flex:none;justify-content:center;align-items:center;width:100%;padding:24px 24px 40px;display:flex}.pa-welcome-brand{justify-content:center;align-items:center;gap:14px;margin-bottom:12px;display:flex}.pa-welcome-icon{background:linear-gradient(135deg,color-mix(in srgb,var(--primary)18%,transparent),color-mix(in srgb,var(--primary)8%,transparent));width:52px;height:52px;color:var(--primary);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--primary)20%,transparent);border-radius:16px;flex:none;justify-content:center;align-items:center;display:flex}.pa-welcome-title{color:var(--foreground);letter-spacing:-.5px;margin:0;font-size:30px;font-weight:700;line-height:1}.pa-welcome-desc{color:var(--muted-foreground);text-align:center;max-width:560px;margin-bottom:28px;font-size:14px;line-height:1.6}.pa-welcome-examples{width:100%;max-width:var(--pa-content-max);margin-bottom:16px}.pa-welcome-examples-head{letter-spacing:.04em;text-transform:uppercase;color:var(--muted-foreground);align-items:center;gap:6px;padding:0 4px 8px;font-size:11.5px;font-weight:600;display:flex}.pa-welcome-input{width:100%;max-width:var(--pa-content-max)}.pa-msg-row{padding:20px 0}.pa-msg-row+.pa-msg-row{padding-top:4px}.pa-msg-row.user+.pa-msg-row.assistant{padding-top:14px}.pa-msg-inner{max-width:var(--pa-content-max);box-sizing:border-box;width:100%;margin:0 auto;padding:0 24px}.pa-msg-row.user .pa-msg-inner{justify-content:flex-end;display:flex}.pa-user-bubble{background:color-mix(in srgb,var(--primary)10%,var(--background));border:1px solid color-mix(in srgb,var(--border)100%,transparent);max-width:80%;color:var(--foreground);border-radius:14px 14px 4px;padding:10px 16px;font-size:14px;line-height:1.6}.pa-ub-text{white-space:pre-wrap;word-break:break-word}.pa-assistant-content{color:var(--foreground);font-size:14px;line-height:1.8}.pa-assistant-content .prose{font-size:14px}.pa-sys-error{border:1px solid color-mix(in srgb,var(--destructive)35%,transparent);background:color-mix(in srgb,var(--destructive)6%,transparent);color:var(--destructive);border-radius:8px;margin-top:8px;padding:8px 12px;font-size:12.5px}.pa-tools{flex-direction:column;gap:4px;margin:0 0 10px;display:flex}.pa-tool-chip{background:color-mix(in srgb,var(--muted)50%,var(--background));border:1px solid #0000;border-radius:6px;transition:border-color .15s;overflow:hidden}.pa-tool-chip:hover{border-color:var(--border)}.pa-tool-chip.error .pa-tool-status{color:var(--destructive)}.pa-tool-head{color:var(--muted-foreground);-webkit-user-select:none;user-select:none;align-items:center;gap:8px;padding:6px 10px;font-size:12px;display:flex}.pa-tool-head.clickable{cursor:pointer}.pa-tool-head.clickable:hover{background:var(--accent)}.pa-tool-arrow{width:12px;height:12px;color:var(--muted-foreground);flex:none;transition:transform .2s;transform:rotate(-90deg)}.pa-tool-head.open .pa-tool-arrow{transform:rotate(0)}.pa-tool-arrow.placeholder{visibility:hidden}.pa-tool-name{color:var(--foreground);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:12px;overflow:hidden}.pa-tool-status{color:var(--muted-foreground);flex:none;align-items:center;gap:4px;margin-left:auto;font-family:ui-monospace,SF Mono,monospace;font-size:10.5px;display:inline-flex}.pa-tool-body{border-top:1px dashed var(--border);color:var(--muted-foreground);white-space:pre-wrap;word-break:break-word;max-height:260px;margin:0;padding:8px 12px 10px 30px;font-family:ui-monospace,SF Mono,monospace;font-size:11.5px;line-height:1.55;overflow-y:auto}.pa-file-card{border:1px solid var(--border);background:var(--background);cursor:pointer;border-radius:10px;align-items:center;gap:8px;max-width:340px;padding:9px 14px;font-size:13px;display:inline-flex}.pa-file-card:hover{background:var(--accent)}.pa-input-area{flex:none;padding:0 24px 24px}.pa-input-center{width:100%;max-width:calc(var(--pa-content-max) + 48px);box-sizing:border-box;flex-direction:column;align-items:stretch;margin:0 auto;display:flex}.pa-input-stack{width:100%;max-width:var(--pa-content-max);margin:0 auto}.pa-chips{flex-wrap:wrap;gap:6px;padding:0 4px 8px;display:flex}.pa-chip{border:1px solid var(--border);background:var(--muted);border-radius:8px;align-items:center;gap:6px;max-width:220px;padding:4px 8px 4px 4px;font-size:11.5px;display:inline-flex}.pa-chip img{object-fit:cover;border-radius:5px;width:24px;height:24px}.pa-chip button{color:var(--muted-foreground);display:inline-flex}.pa-chip button:hover{color:var(--foreground)}.pa-input-box{background:var(--background);border:1px solid var(--border);border-radius:24px;width:100%;transition:border-color .25s,box-shadow .25s,background .2s;overflow:visible;box-shadow:0 1px 2px #0000000a}.pa-input-box:focus-within{border-color:var(--ring);box-shadow:0 0 0 1px var(--ring)}.pa-input-box.drag{background:color-mix(in srgb,var(--primary)8%,var(--background));border-color:var(--primary)}.pa-input-box textarea{width:100%;color:var(--foreground);resize:none;field-sizing:content;background:0 0;border:none;outline:none;min-height:26px;max-height:200px;padding:16px 14px 4px 20px;font-size:14px;line-height:1.6;display:block}.pa-input-bottom{flex-wrap:nowrap;align-items:center;gap:8px;padding:6px 10px 8px 8px;display:flex}.pa-input-left{align-items:center;gap:6px;min-width:0;display:flex}.pa-input-right{z-index:2;flex:none;align-items:center;gap:6px;margin-left:auto;display:flex;position:relative}.pa-source-tag{color:var(--muted-foreground);background:var(--muted);white-space:nowrap;border-radius:999px;padding:3px 8px;font-size:11.5px}.pa-source-chip{color:var(--foreground);border:1px solid var(--primary);background:color-mix(in srgb,var(--primary)8%,transparent);white-space:nowrap;cursor:pointer;border-radius:999px;align-items:center;gap:4px;padding:3px 9px;font-size:12px;display:inline-flex}.pa-source-chip:hover,.pa-source-chip.open{background:color-mix(in srgb,var(--primary)16%,transparent)}.pa-plus-wrap{display:flex;position:relative}.pa-plus-btn{border:1px solid var(--border);width:32px;height:32px;color:var(--muted-foreground);cursor:pointer;background:0 0;border-radius:50%;flex:none;justify-content:center;align-items:center;transition:all .15s;display:flex}.pa-plus-btn:hover{color:var(--foreground);background:var(--accent)}.pa-plus-btn.open{background:var(--primary);border-color:var(--primary);color:var(--primary-foreground)}.pa-composer-menu{z-index:60;background:var(--popover);min-width:250px;color:var(--popover-foreground);border:1px solid var(--border);border-radius:14px;flex-direction:column;gap:2px;padding:6px;display:flex;position:absolute;bottom:42px;left:0;box-shadow:0 12px 40px #0000002e}.pa-menu-label{color:var(--muted-foreground);letter-spacing:.04em;text-transform:uppercase;padding:6px 10px 2px;font-size:10px}.pa-menu-item{width:100%;color:var(--foreground);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:9px;align-items:center;gap:10px;padding:8px 10px;font-size:13px;display:flex}.pa-menu-item:hover{background:var(--accent)}.pa-menu-item 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10px!important;font-size:12px!important}.pa-model-btn:hover{border-color:var(--border)!important;color:var(--foreground)!important}.pa-send-btn{background:var(--primary);width:32px;height:32px;color:var(--primary-foreground);cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;transition:all .15s;display:flex}.pa-send-btn:hover{filter:brightness(1.08)}.pa-send-btn:disabled{opacity:.2;cursor:not-allowed;pointer-events:none}.pa-send-btn.stop{color:#fff;background:#ef4444}.pa-send-btn.stop:hover{background:#dc2626}.pa-prompts{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;width:100%;display:grid}.pa-prompt-chip{background:color-mix(in srgb,var(--background)80%,transparent);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border:1px solid var(--border);cursor:pointer;text-align:left;border-radius:12px;flex-direction:column;gap:4px;padding:12px 14px;line-height:1.5;transition:border-color .15s,background .15s,transform .15s,box-shadow .15s;display:flex}.pa-prompt-chip:hover{border-color:var(--primary);background:var(--accent);transform:translateY(-1px);box-shadow:0 6px 18px -10px #00000040}.pa-prompt-title{color:var(--foreground);font-size:13px;font-weight:600}.pa-prompt-sub{color:var(--muted-foreground);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:11px;display:-webkit-box;overflow:hidden}.pa-input-hint{color:var(--muted-foreground);text-align:center;opacity:.8;padding:8px 4px 0;font-size:11px}@media (max-width:640px){.pa-prompts{grid-template-columns:1fr}.pa-input-hint{display:none}}.pa-preview-pane{background:color-mix(in srgb,var(--muted)30%,var(--background));border-left:1px solid #0000;flex-direction:column;flex:none;width:0;min-height:0;transition:width .28s,border-color .28s;display:flex;position:relative;overflow:hidden}.pa-shell.preview-open .pa-preview-pane{border-left-color:var(--border)}.pa-preview-pane .pa-resize{position:absolute;top:0;bottom:0;left:-2px}.pa-pane-head{border-bottom:1px solid var(--border);flex:none;align-items:center;gap:6px;height:46px;padding:0 8px 0 6px;display:flex}.pa-pane-toggle{width:30px;height:30px;color:var(--muted-foreground);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:8px;flex:none;justify-content:center;align-items:center;display:inline-flex;position:relative}.pa-pane-toggle:hover{background:var(--accent);color:var(--foreground)}.pa-pane-edge{z-index:5;position:absolute;top:10px;right:8px}.pa-pane-edge .pa-pane-toggle{border-color:var(--border);background:var(--background);width:32px;height:32px;box-shadow:0 1px 2px #0000000d}.pa-pane-toggle-cnt{background:var(--primary);min-width:16px;height:16px;color:var(--primary-foreground);text-align:center;border-radius:999px;padding:0 4px;font-family:ui-monospace,SF 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5px;font-size:11px}.pa-pane-title{text-overflow:ellipsis;white-space:nowrap;min-width:0;color:var(--muted-foreground);flex:1;font-size:12px;overflow:hidden}.pa-pane-actions{flex:none;align-items:center;gap:2px;display:flex}.pa-pane-close{width:28px;height:28px;color:var(--muted-foreground);border-radius:6px;justify-content:center;align-items:center;font-size:20px;line-height:1;display:inline-flex}.pa-pane-close:hover{background:var(--accent);color:var(--foreground)}.pa-icon-btn{width:28px;height:28px;color:var(--muted-foreground);border-radius:6px;justify-content:center;align-items:center;transition:background .15s,color .15s;display:inline-flex}.pa-icon-btn:hover{background:var(--accent);color:var(--foreground)}.pa-icon-btn:disabled{opacity:.4}.pa-pane-empty{text-align:center;color:var(--muted-foreground);padding:40px 16px;font-size:12.5px}.pa-preview-scroll{flex:1;min-height:0;overflow-y:auto}.pa-preview-body{padding:16px 20px 32px}.pa-subtabs{gap:2px;padding:8px 10px 4px;display:flex}.pa-subtabs button{color:var(--muted-foreground);border-radius:999px;padding:4px 9px;font-size:12px}.pa-subtabs button.active{background:var(--muted);color:var(--foreground)}.pa-cand{border-bottom:1px solid color-mix(in srgb,var(--border)60%,transparent);align-items:flex-start;gap:8px;padding:9px 12px;display:flex}.pa-cand:hover,.pa-cand.checked{background:color-mix(in srgb,var(--muted)50%,transparent)}.pa-right-foot{border-top:1px solid var(--border);background:var(--background);align-items:center;gap:8px;padding:8px 10px;display:flex}.pa-file{align-items:center;gap:9px;padding:7px 12px;display:flex}.pa-file:hover{background:color-mix(in srgb,var(--muted)50%,transparent)}.pa-file-group{letter-spacing:.04em;color:var(--muted-foreground);text-transform:uppercase;padding:8px 12px 4px;font-size:11px;font-weight:600}.pa-preview-mask{z-index:60;background:#00000059;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.pa-preview{background:var(--background);border:1px solid var(--border);border-radius:14px;flex-direction:column;width:min(900px,100%);height:min(86vh,100%);display:flex;overflow:hidden;box-shadow:0 20px 60px -20px #00000080}.pa-preview-head{border-bottom:1px solid var(--border);align-items:center;gap:8px;padding:10px 14px;font-size:13.5px;display:flex}.pa-preview .pa-preview-body{flex:1;min-height:0;padding:18px 26px 32px;overflow-y:auto}@media (max-width:900px){.pa-shell.preview-open .pa-main-col{min-width:0}.pa-preview-pane{right:0;top:var(--er-nav-offset,3.5rem);z-index:40;position:fixed;bottom:0;box-shadow:-8px 0 30px -20px #0006}.pa-nav{left:0;top:var(--er-nav-offset,3.5rem);z-index:40;position:fixed;bottom:0;box-shadow:8px 0 30px -20px #0006}}