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var(--border);background:var(--surface);font-size:17px;color:var(--text-2);cursor:pointer;transition:all .15s ease}.chat-attach-btn:hover{color:var(--accent);border-color:#4f46e559;background:var(--accent-soft)}.chat-send-btn{height:42px;padding:0 21px;border-radius:11px;flex-shrink:0;font-size:14px}.chat-attachments{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:7px}.chat-attachment-read{color:var(--green);font-size:11px}.chat-usage-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:9px;font-size:12px;color:var(--text-3);flex-wrap:wrap}.chat-usage-bar b{color:var(--accent-ink)}.chat-quota{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--text-2)}.chat-quota .bolt{color:var(--amber)}@media(max-width:1180px){.chat-page-wide{padding-left:14px;padding-right:14px}.chat-shell{grid-template-columns:140px 155px minmax(0,1fr)}.chat-shell.history-collapsed{grid-template-columns:155px 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