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span:nth-child(3){animation-delay:.4s}@keyframes pulse{0%,to{opacity:.3}50%{opacity:.8}}.chat-composer{border-top:1px solid var(--border);flex-shrink:0;align-items:stretch;gap:.45rem;margin-top:.05rem;padding:.5rem .2rem .3rem;display:flex}.chat-composer-main{flex-direction:column;flex:1;gap:.4rem;display:flex}.chat-attachments{flex-direction:column;gap:.35rem;display:flex}.chat-attachments-upload input[type=file]{display:none}.chat-attachments-upload span{border:1px dashed var(--border);cursor:pointer;border-radius:8px;padding:.2rem .5rem;font-size:.75rem;display:inline-block}.chat-attachments-list{flex-direction:column;gap:.2rem;max-height:6rem;display:flex;overflow:auto}.chat-attachment-item{align-items:center;gap:.35rem;font-size:.75rem;display:flex}.chat-attachment-item span{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.chat-composer-actions{box-sizing:border-box;flex-direction:column;flex-shrink:0;justify-content:space-between;gap:.35rem;min-width:7rem;padding:.1rem;display:flex}.chat-mode-field{color:var(--text);opacity:.95;flex-direction:column;align-items:stretch;gap:.35rem;margin:0;font-size:.72rem;display:flex}.chat-mode-label{white-space:nowrap}.chat-mode-select{font:inherit;color:var(--text-h);background:var(--bg);border:1px solid var(--border);cursor:pointer;box-sizing:border-box;border-radius:8px;width:100%;min-width:0;padding:.38rem 1.1rem .38rem .45rem;font-size:.78rem}.chat-composer-send{align-self:stretch;width:100%}.chat-mode-select:hover:not(:disabled){border-color:var(--accent-border)}.chat-mode-select:focus{outline:2px solid var(--accent);outline-offset:1px}.chat-mode-select:disabled{opacity:.55;cursor:not-allowed}.chat-input{font:inherit;border:1px solid var(--border);background:var(--bg);color:var(--text-h);resize:none;box-sizing:border-box;border-radius:8px;flex:1;min-height:2.15rem;max-height:8rem;padding:.4rem .6rem;font-size:.88rem;line-height:1.38}.btn{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--bg);color:var(--text-h);border-radius:10px;flex-shrink:0;padding:.5rem .85rem}.btn:hover:not(:disabled){background:var(--code-bg)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.ghost{padding:.4rem .6rem;font-size:.8rem}.btn.ghost.active{background:var(--code-bg);border-color:var(--border);opacity:1;font-weight:500}.app-nav .nav-brand{flex-shrink:0;align-items:center;text-decoration:none;display:flex}.app-nav .nav-brand-logo{border-radius:.25rem;width:auto;height:1.75rem;display:block}.app-nav .nav-toolbar-end{flex-wrap:wrap;align-items:center;gap:.75rem;margin-left:auto;display:flex}.app-nav .nav-locale{align-items:center;gap:.4rem;font-size:.8rem;display:flex}.app-nav 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