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var(--border);container-type:inline-size}.attachment-item{display:flex;align-items:center;justify-content:space-between;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:clamp(8px,1.5vw,12px);padding:clamp(8px,2vw,16px);margin-bottom:clamp(6px,1.5vw,12px);box-shadow:0 2px 8px #0000000d;transition:all .2s ease;word-wrap:break-word;overflow-wrap:break-word}.attachment-item:hover{box-shadow:0 4px 12px #0000001a;transform:translateY(-1px)}.attachment-item:last-child{margin-bottom:0}.attachment-info{display:flex;align-items:center;gap:clamp(6px,1.5vw,12px);flex:1;min-width:0}.attachment-icon{font-size:clamp(14px,2.5vw,18px);flex-shrink:0}.attachment-name{font-weight:500;color:var(--text);flex:1;word-wrap:break-word;overflow-wrap:break-word;white-space:normal;-webkit-hyphens:auto;hyphens:auto;min-width:0;max-width:100%}.attachment-size{font-size:clamp(10px,1.8vw,12px);color:var(--text-muted);opacity:.8}.download-btn{padding:clamp(6px,1.5vw,10px) clamp(8px,2vw,14px);font-size:clamp(11px,2vw,13px);min-height:auto;flex-shrink:0;border-radius:clamp(6px,1vw,8px);transition:all .2s ease}.download-btn:hover{transform:scale(1.05)}@container (max-width: 400px){.attachment-item{flex-direction:column;align-items:stretch;gap:clamp(8px,2vw,12px);padding:12px}.attachment-info{justify-content:space-between;flex-direction:column;align-items:flex-start;gap:4px}.attachment-name{font-size:14px;line-height:1.3;margin-bottom:2px}.attachment-size{font-size:11px}.download-btn{width:100%;justify-content:center;padding:10px 12px;font-size:13px}}@container (min-width: 401px) and (max-width: 600px){.attachment-item{padding:14px}.attachment-info{gap:10px}.attachment-name{font-size:14px}.attachment-size{font-size:12px}.download-btn{padding:8px 12px;font-size:12px}}@container (min-width: 601px){.attachment-item{padding:16px}.attachment-info{gap:12px}.attachment-name{font-size:15px}.attachment-size{font-size:12px}.download-btn{padding:10px 14px;font-size:13px}}@media (max-width: 768px){.main-content{margin-left:0;padding:clamp(12px,2.5vw,20px);padding-bottom:calc(env(safe-area-inset-bottom,0px) + 12px)}.sidebar{transform:translate(-100%);transition:transform .3s cubic-bezier(.4,0,.2,1);width:280px;z-index:1000}.sidebar.open{transform:translate(0)}.card{padding:clamp(12px,2.5vw,20px);margin-bottom:clamp(12px,2.5vw,20px)}.btn{padding:clamp(8px,2vw,12px) clamp(12px,3vw,20px);font-size:clamp(13px,2.5vw,14px);min-height:clamp(36px,6vw,44px)}.input,.textarea,.select{padding:clamp(10px,2vw,12px) clamp(12px,2.5vw,16px);font-size:16px;border-radius:clamp(8px,1.5vw,12px)}.modal-overlay{padding:clamp(12px,2.5vw,20px)}.modal{max-width:100%;max-height:95vh;border-radius:clamp(12px,2vw,16px)}.modal-header{padding:clamp(12px,2.5vw,20px)}.modal-header h3{font-size:clamp(1rem,3vw,1.25rem)}.modal-body{padding:clamp(16px,3vw,24px);max-height:calc(95vh - 120px)}.modal-footer{padding:clamp(12px,2.5vw,20px);flex-direction:column;gap:clamp(6px,1.5vw,8px)}.modal-footer .btn{width:100%;justify-content:center}}@supports (height: 100dvh){.chat-container{height:calc(100dvh - 48px)}}