.icon-button{display:inline-grid;width:34px;height:34px;flex:0 0 auto;place-items:center;padding:0;border:1px solid transparent;border-radius:var(--radius-control);color:var(--color-ink-muted);background:transparent;transition:color .15s ease,background .15s ease,border-color .15s ease}.icon-button:hover:not(:disabled){color:var(--color-ink);border-color:var(--color-border);background:var(--color-canvas-muted)}.icon-button:disabled{color:var(--color-ink-subtle);opacity:.55}.base-input{display:flex;min-width:0;height:40px;align-items:center;gap:var(--space-2);padding:0 var(--space-2);border-radius:var(--radius-control);color:var(--color-ink-subtle);background:var(--color-canvas-muted)}.base-input-prefix,.base-input-suffix{flex:0 0 auto;color:var(--color-ink-subtle)}.base-input-control{width:100%;min-width:0;padding:0;border:0;outline:0;color:var(--color-ink);background:transparent;font-size:15px;text-align:right}.base-input-control:focus-visible{box-shadow:none}.base-input-control::-webkit-inner-spin-button,.base-input-control::-webkit-outer-spin-button{margin:0}.fade-mask{position:relative;min-width:0;min-height:0}.fade-mask-content{width:100%;height:100%;min-height:0;overflow:auto}.fade-mask-overlay{position:absolute;z-index:1;right:0;left:0;height:var(--fade-mask-height);pointer-events:none}.fade-mask-overlay-top{top:0;background:linear-gradient(to bottom,var(--fade-mask-color, var(--color-canvas)),transparent)}.fade-mask-overlay-bottom{bottom:0;background:linear-gradient(to bottom,transparent,var(--fade-mask-color, var(--color-canvas)))}@keyframes surface-ripple-reveal{0%{clip-path:circle(0 at var(--surface-reveal-origin))}82%{clip-path:circle(165% at var(--surface-reveal-origin))}to{clip-path:circle(150% at var(--surface-reveal-origin))}}@keyframes surface-ripple-conceal{0%{clip-path:circle(150% at var(--surface-reveal-origin))}to{clip-path:circle(0 at var(--surface-reveal-origin))}}.popover-menu{--surface-reveal-open-duration: .32s;--surface-reveal-close-duration: .22s;position:fixed;z-index:10;width:156px;padding:var(--space-1);overflow:hidden;border:0;border-radius:var(--radius-surface);background:var(--color-surface);box-shadow:var(--shadow-lg);will-change:clip-path}.popover-menu[data-entry-phase=idle]{visibility:hidden}.popover-menu[data-entry-phase=opening]{animation:surface-ripple-reveal var(--surface-reveal-open-duration) linear both}.popover-menu[data-entry-phase=closing]{z-index:11;animation:surface-ripple-conceal var(--surface-reveal-close-duration) linear both;pointer-events:none}.popover-action{display:flex;gap:var(--space-3);align-items:center;width:100%;height:34px;padding:0 var(--space-3);border:0;border-radius:var(--radius-control);color:var(--color-ink);background:transparent;font-size:14px;line-height:1;text-align:left}.popover-action:hover,.popover-action:focus-visible{background:var(--color-canvas-muted)}.popover-action img{width:18px;height:18px;flex:0 0 auto}.tag-selector{display:grid;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;gap:var(--space-1);min-height:48px;padding:var(--space-1);border-radius:var(--radius-control);background:var(--color-canvas-muted)}.tag-selector-option{position:relative;display:grid;min-width:0;min-height:40px;place-items:center;padding:0 var(--space-3);border:0;border-radius:var(--radius-control);color:var(--color-ink-muted);background:transparent;font-size:14px;line-height:1.4;transition:color .15s ease,background .15s ease,box-shadow .15s ease}.tag-selector-option.has-icon{grid-template-rows:20px 20px;gap:var(--space-1);min-height:64px;padding:var(--space-2) var(--space-3)}.tag-selector-option-icon{display:grid;height:20px;place-items:center}.tag-selector-option:hover:not(.selected){color:var(--color-ink);background:color-mix(in srgb,var(--color-surface) 54%,transparent)}.tag-selector-option.selected{color:var(--color-ink);background:var(--color-surface);box-shadow:var(--shadow-xs)}.tag-selector-badge{position:absolute;top:calc(var(--space-1) * -1);right:calc(var(--space-1) * -1);padding:0 var(--space-1);border-radius:var(--radius-micro);color:#1294bd;background:#dff8ff;font-size:10px;font-weight:600;line-height:1.3;transform:translate(18%,-20%)}@keyframes mention-preview-enter{0%{opacity:0;transform:translateY(4px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes upload-add-expand{0%{top:var(--upload-add-collapsed-y);left:var(--upload-add-collapsed-x);width:var(--upload-add-collapsed-size);height:var(--upload-add-collapsed-size);border-radius:50%;transform:rotate(0)}to{top:0;left:var(--reference-preview-expanded-step);width:var(--reference-preview-width);height:var(--reference-preview-height);border-radius:0;transform:rotate(4deg)}}@keyframes upload-add-collapse{0%{top:0;left:calc(var(--preview-count) * var(--reference-preview-expanded-step));width:var(--reference-preview-width);height:var(--reference-preview-height);border-radius:0;transform:rotate(4deg)}to{top:var(--upload-add-collapsed-y);left:var(--upload-add-collapsed-x);width:var(--upload-add-collapsed-size);height:var(--upload-add-collapsed-size);border-radius:50%;transform:rotate(0)}}@keyframes upload-add-empty-expand{0%{top:var(--upload-add-collapsed-y);left:var(--upload-add-collapsed-x);width:var(--upload-add-collapsed-size);height:var(--upload-add-collapsed-size);border-radius:50%;transform:rotate(0)}to{top:0;left:0;width:var(--reference-preview-width);height:var(--reference-preview-height);border-radius:0;transform:rotate(-8deg)}}@keyframes upload-add-slide-in{0%{top:0;left:0;opacity:0;transform:rotate(4deg) scale(.92)}to{top:0;left:calc(var(--preview-count) * var(--reference-preview-expanded-step));opacity:1;transform:rotate(4deg) scale(1)}}.composer{--composer-resize-duration: .34s;--composer-content-duration: .3s;--composer-position-duration: .28s;position:absolute;z-index:2;top:calc(100% - var(--composer-bottom-inset));left:50%;right:auto;bottom:auto;display:flex;width:min(var(--composer-max-width),calc(100% - 2 * 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cubic-bezier(.23,1,.32,1),margin var(--composer-content-duration) cubic-bezier(.23,1,.32,1),transform .24s cubic-bezier(.23,1,.32,1);cursor:pointer}.upload-control:hover{border:0;color:var(--color-ink-subtle);background:#f1f2f4;transform:rotate(-8deg) scale(1.2)}.upload-control:focus-within{box-shadow:var(--focus-ring)}.upload-control img{width:14px;height:14px;transform:scale(1);transition:transform .16s cubic-bezier(.23,1,.32,1)}.reference-preview-stack{--reference-preview-width: 48px;--reference-preview-height: 64px;--reference-preview-expanded-step: calc(var(--reference-preview-width) + var(--space-1));--upload-add-collapsed-size: 30px;--upload-add-collapsed-x: 36px ;--upload-add-collapsed-y: 44px ;--preview-spread-stagger: 90ms;--preview-spread-duration: .36s;--preview-exit-duration: .22s;position:relative;width:64px;height:72px;margin:var(--space-2) 0 0 var(--space-2);transition:width var(--composer-content-duration) cubic-bezier(.23,1,.32,1),height var(--composer-content-duration) cubic-bezier(.23,1,.32,1),margin var(--composer-content-duration) cubic-bezier(.23,1,.32,1)}.reference-preview-stack:after{position:absolute;z-index:0;top:calc(var(--space-3) * -1);left:calc(var(--space-3) * -1);width:calc(100% + var(--space-4) + var(--space-2));height:calc(100% + var(--space-4) + var(--space-2));content:"";transition:width var(--preview-spread-duration) cubic-bezier(.22,.61,.36,1)}.reference-preview-stack.is-open:after,.reference-preview-stack.is-closing:after{width:calc((var(--preview-count) + 1) * var(--reference-preview-expanded-step) + var(--space-5));height:calc(var(--reference-preview-height) + var(--space-6))}.reference-preview-stack.is-full.is-open:after,.reference-preview-stack.is-full.is-closing:after{width:calc(var(--preview-count) * var(--reference-preview-expanded-step) + var(--space-5))}.reference-preview{position:absolute;z-index:calc(1 + var(--preview-index));top:0;left:0;display:block;width:var(--reference-preview-width);height:var(--reference-preview-height);padding:0;overflow:visible;border:0;border-radius:0;background:transparent;box-shadow:none;transform:rotate(var(--preview-rotation));transform-origin:center;transition:left var(--preview-spread-duration) cubic-bezier(.22,.61,.36,1),transform var(--preview-spread-duration) cubic-bezier(.22,.61,.36,1);will-change:left,transform}.reference-preview-surface{position:relative;display:block;width:100%;height:100%;opacity:1;transform:scale(1);transform-origin:center bottom;transition:transform .3s ease}.reference-preview-image{position:relative;display:block;width:100%;height:100%;overflow:hidden;border-radius:0;background:var(--color-canvas-muted);box-shadow:var(--shadow-xs)}.reference-preview-image img{display:block;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .18s ease}.reference-preview-image.is-ready img{opacity:1}.reference-preview-loading{position:absolute;top:0;right:0;bottom:0;left:0;z-index:1;display:grid;place-items:center;background:#1d212947;-webkit-backdrop-filter:blur(1px);backdrop-filter:blur(1px);pointer-events:none}.reference-preview-spinner{width:14px;height:14px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.composer.is-condensed .reference-preview-spinner{width:10px;height:10px;border-width:1.5px}.reference-preview-remove{position:absolute;z-index:2;top:calc(var(--space-1) * -1.5);right:calc(var(--space-1) * -1);display:grid;width:16px;height:16px;padding:0;place-items:center;border:0;border-radius:50%;color:inherit;background:var(--color-ink);box-shadow:var(--shadow-xs);cursor:pointer;opacity:0;visibility:hidden;pointer-events:none;transform:scale(.6);transition:opacity .16s ease,transform .18s cubic-bezier(.22,1,.36,1),visibility 0s linear .16s}.reference-preview-remove img{width:10px;height:10px}.reference-preview-stack:not(.count-1).is-open .reference-preview{z-index:calc(1 + var(--preview-index));left:calc(var(--preview-index) * var(--reference-preview-expanded-step));transform:rotate(var(--preview-expanded-rotation));transition-delay:calc(var(--preview-index) * var(--preview-spread-stagger))}.reference-preview-stack:not(.count-1):not(.is-open) .reference-preview{left:0;transition-delay:0ms}.reference-preview-stack.is-open.is-ready .reference-preview:not(.is-exiting),.reference-preview-stack:has(.reference-preview.is-exiting) .reference-preview:not(.is-exiting){transition-delay:0ms}.reference-preview-stack.is-ready .reference-preview:not(.is-exiting):hover{z-index:10}.reference-preview-stack.is-ready .reference-preview:not(.is-exiting):hover .reference-preview-remove{opacity:1;visibility:visible;pointer-events:auto;transform:scale(1);transition-delay:0s}.reference-preview-stack.is-ready .reference-preview:not(.is-exiting):hover .reference-preview-surface{transform:scale(1.2)}.reference-preview.is-exiting{z-index:0;pointer-events:none;transition-delay:0ms!important}.reference-preview.is-exiting .reference-preview-remove{opacity:0;visibility:hidden;pointer-events:none;transition:none}.upload-add-orb{position:absolute;z-index:20;top:var(--upload-add-collapsed-y);left:var(--upload-add-collapsed-x);display:none;width:var(--upload-add-collapsed-size);height:var(--upload-add-collapsed-size);place-items:center;padding:0;border:0;border-radius:50%;background:transparent;transform-origin:center bottom;pointer-events:none;opacity:1;transform:scale(1)}.reference-preview-stack:not(.count-1) .upload-add-orb{display:grid}.reference-preview-stack:not(.count-1).is-open .upload-add-orb{opacity:0;transform:scale(.72);transition:opacity .18s ease,transform .18s cubic-bezier(.22,1,.36,1)}.reference-preview-stack:not(.count-1).is-closing .upload-add-orb{opacity:0;transform:scale(.72);transition:none}.reference-preview-stack:not(.count-1).is-idle .upload-add-orb{opacity:1;transform:scale(1);transition:none;pointer-events:auto;cursor:pointer}.upload-add-orb .upload-add-surface{width:100%;height:100%;border-radius:50%}.upload-add{position:absolute;z-index:20;top:var(--upload-add-collapsed-y);left:var(--upload-add-collapsed-x);display:grid;width:var(--upload-add-collapsed-size);height:var(--upload-add-collapsed-size);place-items:center;padding:0;border:0;border-radius:50%;background:transparent;transform-origin:center bottom;pointer-events:auto;cursor:default}.reference-preview-stack:not(.count-1).is-idle .upload-add{opacity:0;pointer-events:none;animation:none;transition:none}.reference-preview-stack.is-idle .upload-add{animation:none;transition:none}.reference-preview-stack.count-1.is-idle .upload-add{pointer-events:auto;cursor:pointer}.reference-preview-stack.is-idle .reference-preview,.reference-preview-stack.is-idle .upload-add-orb{transition:none}.reference-preview-stack.count-1.is-open .upload-add{top:0;left:var(--reference-preview-expanded-step);width:var(--reference-preview-width);height:var(--reference-preview-height);border-radius:0;transform:rotate(4deg);animation:upload-add-expand var(--preview-spread-duration) cubic-bezier(.22,.61,.36,1) both;pointer-events:none;cursor:default}.reference-preview-stack:not(.count-1).is-open .upload-add{top:0;left:calc(var(--preview-count) * var(--reference-preview-expanded-step));width:var(--reference-preview-width);height:var(--reference-preview-height);border-radius:0;transform:rotate(4deg);z-index:calc(2 + var(--preview-count));opacity:1;animation:upload-add-slide-in var(--preview-spread-duration) cubic-bezier(.22,.61,.36,1) calc(var(--preview-count) * var(--preview-spread-stagger)) both;pointer-events:none;cursor:default}.reference-preview-stack.is-closing .upload-add{top:var(--upload-add-collapsed-y);left:var(--upload-add-collapsed-x);width:var(--upload-add-collapsed-size);height:var(--upload-add-collapsed-size);border-radius:50%;transform:rotate(0);opacity:1;animation:upload-add-collapse var(--preview-spread-duration) cubic-bezier(.22,.61,.36,1) both;pointer-events:none;cursor:default}.reference-preview-stack.is-open.is-ready .upload-add,.reference-preview-stack.is-open:has(.reference-preview.is-exiting) .upload-add{top:0;left:calc(var(--preview-count) * var(--reference-preview-expanded-step));width:var(--reference-preview-width);height:var(--reference-preview-height);border-radius:0;transform:rotate(4deg);z-index:calc(2 + var(--preview-count));pointer-events:auto;cursor:pointer;animation:none;opacity:1;transition:left var(--preview-spread-duration) cubic-bezier(.22,.61,.36,1)}.reference-preview-stack.is-empty-upload-expanding .upload-add{top:0;left:0;width:var(--reference-preview-width);height:var(--reference-preview-height);border-radius:0;opacity:1;transform:rotate(-8deg);animation:upload-add-empty-expand var(--preview-spread-duration) cubic-bezier(.22,.61,.36,1) both;pointer-events:none;cursor:default}.upload-add-surface{display:grid;width:100%;height:100%;place-items:center;border-radius:inherit;background:#f1f2f4;box-shadow:var(--shadow-xs);transform-origin:center bottom;transition:transform .3s ease}.reference-preview-stack.is-ready .upload-add:hover .upload-add-surface{transform:scale(1.2)}.upload-add img,.upload-add-orb img{width:14px;height:14px;transform:scale(1);transition:transform .16s cubic-bezier(.23,1,.32,1)}.composer.is-dragging-image .upload-control img,.composer.is-dragging-image .upload-add img,.composer.is-dragging-image .upload-add-orb img{transform:scale(1.16)}.composer-content{display:flex;min-width:0;min-height:0;flex:1;flex-direction:column;gap:var(--space-2);margin-right:calc(var(--space-2) * -1);overflow:visible;transition:margin-right var(--composer-content-duration) cubic-bezier(.23,1,.32,1)}.composer-prompt-context{position:relative;display:block;min-width:0}.composer-prompt-placeholder{position:absolute;z-index:0;top:2px;right:var(--space-2);left:0;color:#9da7b3;font-family:var(--font-display);font-size:14px;line-height:1.65;pointer-events:none}.composer-mention-chip{position:relative;display:inline-flex;max-width:160px;height:28px;gap:5px;align-items:center;margin:0 var(--space-2);vertical-align:middle;-webkit-user-select:all;user-select:all}.composer-mention-chip-thumb{display:block;width:22px;height:22px;flex:0 0 auto;object-fit:cover;border-radius:6px;background:var(--color-canvas-muted)}.composer-mention-chip-name{max-width:128px;overflow:hidden;color:var(--color-ink-muted);font-size:13px;line-height:1.3;text-overflow:ellipsis;white-space:nowrap}.composer-mention-preview{position:fixed;z-index:1000;display:block;width:max-content;max-width:min(160px,calc(100vw - 16px));height:auto;padding:3px;overflow:hidden;border-radius:12px;background:var(--color-surface);box-shadow:none;line-height:0;pointer-events:none;animation:mention-preview-enter .15s ease-out both}.composer-mention-preview img{display:block;width:auto;max-width:min(154px,calc(100vw - 22px));height:auto;max-height:120px;object-fit:contain;border-radius:9px;background:var(--color-canvas-muted)}.composer-textarea{position:relative;z-index:1;display:block;width:100%;min-height:112px;max-height:216px;padding:2px var(--space-2) 2px 0;resize:none;outline:none;border:0;color:var(--color-ink);background:transparent;font-family:var(--font-sans);font-size:14px;line-height:1.65;white-space:pre-wrap;overflow-wrap:anywhere;overflow-y:hidden;opacity:1;transform:translateY(0);transition:height .22s cubic-bezier(.23,1,.32,1),opacity .2s ease-out,transform .22s cubic-bezier(.23,1,.32,1)}.composer-prompt-context .composer-textarea{width:100%;min-width:0}.composer-textarea[data-empty=true]{font-family:var(--font-display)}.composer-textarea:focus-visible{box-shadow:none}.mention-popover{z-index:12;width:208px;padding:var(--space-2)}.mention-popover .popover-caption{margin:2px var(--space-2) var(--space-2);font-size:13px}.mention-list{display:grid;gap:2px;max-height:240px;overflow-y:auto}.mention-option{display:flex;gap:var(--space-2);align-items:center;width:100%;min-height:40px;padding:6px 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