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env(safe-area-inset-bottom));flex-shrink:0;width:100%;max-width:860px;margin:0 auto}.chat-input-box{background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-xl);align-items:center;gap:10px;padding:8px 10px 8px 16px;display:flex;box-shadow:0 4px 20px #0000001f}.chat-input-box:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--primary-glow), 0 4px 20px #0000001f}.chat-textarea{color:var(--text-main);resize:none;background:0 0;border:none;outline:none;flex:1;min-height:24px;max-height:120px;font-family:inherit;font-size:.93rem;line-height:1.5}.chat-textarea::placeholder{color:var(--text-dim)}.send-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;display:flex}.send-btn:hover{background:var(--primary-hover);box-shadow:0 4px 14px var(--primary-glow);transform:scale(1.06)}.send-btn:disabled{opacity:.3;cursor:not-allowed;box-shadow:none;transform:none}.send-btn.stop-btn{background:var(--accent-rose)}.send-btn.stop-btn:hover{background:#dc2626}.sidebar-toggle-btn,.sidebar-collapse-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:6px;transition:all .2s;display:flex}.sidebar-toggle-btn:hover,.sidebar-collapse-btn:hover{color:var(--text-main);background:var(--bg-card-hover)}.sidebar-close-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:6px;display:none}.sidebar-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:999;background:#0000008c;display:none;position:fixed;inset:0}@media (width<=768px){.sidebar-close-btn{display:flex}.sidebar-collapse-btn{display:none}.sidebar-overlay.open{display:block}.chat-sidebar{z-index:1000;width:280px;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%);box-shadow:4px 0 32px #0006;opacity:1!important}.chat-sidebar.open{width:280px;transform:translate(0)}.chat-sidebar.collapsed{width:280px}.chat-header{padding:0 16px}.messages-container{gap:16px;padding:16px 14px}.message-bubble{max-width:95%}.chat-input-area{padding:8px 12px max(16px, env(safe-area-inset-bottom))}input[type=text],input[type=email],input[type=number],input[type=password],textarea{font-size:16px!important}}