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var(--dur-fast) var(--ease-out)}#sendBtn .ico{width:17px;height:17px;stroke-width:2.5}#sendBtn:hover{background:var(--accent-hover);transform:translateY(-1px)}#sendBtn:active{transform:scale(.95)}#sendBtn:disabled{background:var(--bg-surface-3);color:var(--text-faint);cursor:not-allowed;transform:none}.composer-hint{max-width:var(--content-w);margin:8px auto 0;text-align:center;font-size:11.5px;color:var(--text-faint)}.attach-btn{background:transparent;border:none;color:var(--text-dim);width:38px;height:38px;min-width:38px;border-radius:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.attach-btn:hover{background:var(--bg-surface-3);color:var(--text)}.attach-btn .ico{width:18px;height:18px}.attach-strip{display:flex;flex-wrap:wrap;gap:8px;padding:4px 4px 10px}.attach-strip[hidden],.attach-error[hidden]{display:none}.attach-chip{display:flex;align-items:center;gap:8px;background:var(--bg-surface-3);border:1px solid var(--border-hairline);border-radius:10px;padding:5px 6px;max-width:220px}.attach-chip img{width:36px;height:36px;object-fit:cover;border-radius:7px;display:block}.attach-file-ico{width:36px;height:36px;min-width:36px;border-radius:7px;background:var(--accent-muted);color:var(--accent);display:flex;align-items:center;justify-content:center}.attach-file-ico .ico{width:16px;height:16px}.attach-name{font-size:12.5px;color:var(--text-body);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attach-remove{background:transparent;border:none;color:var(--text-faint);width:22px;height:22px;min-width:22px;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.attach-remove:hover{background:#ff6b6224;color:var(--danger)}.attach-remove .ico{width:13px;height:13px}.attach-error{font-size:12px;color:var(--danger);padding:2px 4px 8px}.msg-attachments{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}.msg.user .msg-attachments{justify-content:flex-end}.msg-attachments .att-img{max-height:110px;max-width:160px;object-fit:cover;border-radius:10px;border:1px solid var(--border-hairline);display:block}.msg-attachments .att-file{display:inline-flex;align-items:center;gap:6px;background:var(--bg-surface-2);border:1px solid var(--border-hairline);border-radius:999px;padding:5px 12px 5px 9px;font-size:12.5px;color:var(--text-body)}.msg-attachments .att-file .ico{width:14px;height:14px;color:var(--accent)}.bottom-nav{display:none;border-top:1px solid var(--border-hairline);background:#0a0b0de6;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding:6px 10px calc(6px + env(safe-area-inset-bottom))}.bottom-nav .mode-btn{flex:1;flex-direction:column;gap:4px;font-size:11px;padding:8px 4px;border-radius:10px}.bottom-nav .mode-btn .ico{width:20px;height:20px}.bottom-nav .mode-btn.active{background:transparent;color:var(--accent)}.bottom-nav .mode-btn.active .ico{color:var(--accent)}.lightbox{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;background:#000000e0;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);opacity:0;transition:opacity var(--dur-base) var(--ease-out);touch-action:none}.lightbox.show{opacity:1}.lightbox[hidden]{display:none}.lightbox img{max-width:min(100vw - 32px,1400px);max-height:calc(100dvh - 112px);width:auto;height:auto;object-fit:contain;border-radius:var(--radius-sm);box-shadow:0 24px 64px #00000080;transform:scale(.94);transition:transform .25s cubic-bezier(.4,0,.22,1)}.lightbox.show img{transform:scale(1)}.lightbox-controls{position:fixed;top:max(14px,env(safe-area-inset-top));right:max(14px,env(safe-area-inset-right));display:flex;gap:8px;z-index:101}.lb-btn{width:44px;height:44px;border-radius:50%;border:none;background:#ffffff1a;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background var(--dur-fast) var(--ease-out)}.lb-btn:hover{background:#ffffff38}.lb-btn .ico{width:19px;height:19px}button:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (max-width: 1024px){.sidebar{position:fixed;left:0;top:0;bottom:0;transform:translate(-105%);transition:transform var(--dur-slow) var(--ease-out)}.sidebar.open{transform:translate(0);box-shadow:var(--shadow-overlay)}.sidebar-close,.hamburger,.topbar-brand{display:flex}.topbar-title{margin-left:auto}}@media (max-width: 640px){.bottom-nav{display:flex}.composer{padding-bottom:10px}.composer-hint{display:none}.msg.user .msg-body{max-width:88%}.msg-content{font-size:14.5px}.message-list{gap:20px}.topbar{padding-top:calc(10px + env(safe-area-inset-top))}.messages{padding-top:14px}.welcome{margin-top:6vh}.suggestions{grid-template-columns:1fr}.options-bar{padding-top:6px;padding-bottom:6px}.lightbox img{max-width:100vw;border-radius:0}}@media (max-height: 480px){.welcome{margin-top:2vh}.welcome-logo{width:44px;height:44px;margin-bottom:10px}.welcome p{margin-bottom:14px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}