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var(--border-primary);color:var(--text-secondary);font-style:italic;background-color:var(--bg-secondary);padding:var(--spacing-lg)}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.text-xs{font-size:var(--font-size-xs)}.text-sm{font-size:var(--font-size-sm)}.text-base{font-size:var(--font-size-base)}.text-lg{font-size:var(--font-size-lg)}.text-xl{font-size:var(--font-size-xl)}.font-light{font-weight:var(--font-weight-light)}.font-normal{font-weight:var(--font-weight-normal)}.font-medium{font-weight:var(--font-weight-medium)}.font-semibold{font-weight:var(--font-weight-semibold)}.font-bold{font-weight:var(--font-weight-bold)}.text-primary{color:var(--text-primary)}.text-secondary{color:var(--text-secondary)}.text-tertiary{color:var(--text-tertiary)}.text-muted{color:var(--text-muted)}.text-success{color:var(--text-success)}.text-danger{color:var(--text-danger)}.container{width:100%;max-width:var(--chat-max-width);margin:0 auto;padding:0 var(--spacing-lg)}.flex{display:flex}.flex-col{flex-direction:column}.flex-row{flex-direction:row}.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.justify-start{justify-content:flex-start}.justify-end{justify-content:flex-end}.flex-1{flex:1}.flex-none{flex:none}.hidden{display:none}.block{display:block}.inline{display:inline}.inline-block{display:inline-block}.m-0{margin:0}.p-0{padding:0}.mt-auto{margin-top:auto}.mb-auto{margin-bottom:auto}.ml-auto{margin-left:auto}.mr-auto{margin-right:auto}.focus\:outline-none:focus{outline:none}.focus\:ring:focus{box-shadow:var(--shadow-focus)}.transition{transition:all var(--transition-fast)}.transition-colors{transition:color var(--transition-fast),background-color var(--transition-fast),border-color var(--transition-fast)}.sidebar{position:fixed;top:12px;left:12px;height:calc(100vh - 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var(--border-medium);padding:var(--spacing-lg);border-radius:var(--radius-lg);overflow:auto;font-size:var(--font-size-xs);font-family:var(--font-family-mono);color:var(--text-secondary);margin-top:var(--spacing-md);line-height:var(--line-height-relaxed);max-height:300px}.chat--empty{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;min-height:100vh;position:relative}.chat__empty-center{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;width:100%;gap:var(--spacing-2xl);min-height:80vh;justify-content:center;position:relative;z-index:1}.chat .chat__empty-center .chat__input{width:100%;padding:0;transform:translate(0)}@media (max-width: 768px){.chat__main 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var(--transition-fast);color:var(--text-secondary);background-color:var(--color-white);font-size:var(--font-size-base);font-weight:var(--font-weight-medium);direction:rtl;text-align:right;flex-shrink:0;opacity:0;transform:translateY(20px);animation:fadeInSlideUp .6s ease-out forwards}@media (max-width: 768px){.chat-input-extension-tab{font-size:var(--font-size-xs)}}@keyframes fadeInSlideUp{to{opacity:1;transform:translateY(0)}}.chat-input-extension-tab:hover{background:linear-gradient(135deg,var(--color-yellow-ultra-light),var(--color-secondary-ultra-light));color:var(--color-secondary)}.chat-input-extension-tab--active{background-color:var(--color-primary);color:var(--text-white);font-weight:var(--font-weight-semibold)}.chat-input-extension-tab--active .icon{color:var(--text-white)}.chat-input-extension-tab .icon{color:inherit}.chat-input-extensions-container{display:flex;flex-direction:column;gap:var(--spacing-lg);width:100%;max-width:620px;margin:0 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