.chat-toggle{position:fixed;bottom:2rem;right:2rem;width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border:none;color:#fff;cursor:pointer;box-shadow:var(--shadow-xl);transition:all var(--transition-base);z-index:var(--z-fixed);display:flex;align-items:center;justify-content:center}.chat-toggle:hover{transform:scale(1.1);box-shadow:0 20px 40px -5px rgba(59,130,246,.5)}.chat-window{position:fixed;bottom:6rem;right:2rem;width:420px;max-width:calc(100vw - 2rem);height:600px;max-height:calc(100vh - 10rem);border-radius:var(--radius-xl);display:flex;flex-direction:column;box-shadow:var(--shadow-xl);z-index:var(--z-fixed);animation:slideUp .3s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.chat-header{padding:var(--spacing-lg);border-bottom:1px solid var(--color-border);display:flex;justify-content:space-between;align-items:center}.chat-header h3{font-size:var(--font-size-lg);margin:0;color:var(--color-text-primary)}.chat-header p{font-size:var(--font-size-sm);color:var(--color-text-tertiary);margin:0}.chat-close{background:none;border:none;color:var(--color-text-secondary);font-size:var(--font-size-xl);cursor:pointer;padding:var(--spacing-xs);transition:color var(--transition-fast)}.chat-close:hover{color:var(--color-text-primary)}.chat-clear{background:none;border:none;color:var(--color-text-secondary);font-size:var(--font-size-lg);cursor:pointer;padding:var(--spacing-xs);transition:color var(--transition-fast)}.chat-clear:hover{color:var(--color-text-primary)}.chat-error{padding:var(--spacing-md);margin:var(--spacing-md);background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-md);color:#ef4444;font-size:var(--font-size-sm);text-align:center}.chat-messages{flex:1 1;overflow-y:auto;padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-md)}.message{display:flex;animation:fadeIn .3s ease-out}.message-user{justify-content:flex-end}.message-assistant{justify-content:flex-start}.message-content{max-width:80%;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-lg);font-size:var(--font-size-sm);line-height:1.6}.message-content p{margin-bottom:.5rem}.message-content p:last-child{margin-bottom:0}.message-content ol,.message-content ul{margin-bottom:.5rem;padding-left:1.5rem}.message-content li{margin-bottom:.25rem}.message-content strong{font-weight:600}.message-content h2,.message-content h3,.message-content h4{font-size:1rem;font-weight:600;margin-top:1rem;margin-bottom:.5rem}.message-content h2:first-child,.message-content h3:first-child,.message-content h4:first-child{margin-top:0}.message-user .message-content{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;border-bottom-right-radius:var(--radius-sm)}.message-assistant .message-content{background:var(--color-bg-tertiary);color:var(--color-text-primary);border-bottom-left-radius:var(--radius-sm);border:1px solid var(--color-border)}.typing-indicator{display:flex;gap:4px}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--color-text-tertiary);animation:pulse 1.4s ease-in-out infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}.model-loading{display:flex;flex-direction:column;gap:var(--spacing-sm);font-size:var(--font-size-sm);color:var(--color-text-secondary)}.loading-bar{width:100%;height:4px;background:var(--color-bg-tertiary);border-radius:var(--radius-sm);overflow:hidden}.loading-progress{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-accent));transition:width .3s ease;border-radius:var(--radius-sm)}.suggested-prompts{padding:0 var(--spacing-lg) var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-xs)}.prompts-label{font-size:var(--font-size-xs);color:var(--color-text-tertiary);margin-bottom:var(--spacing-xs);font-weight:500}.prompt-button{background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-secondary);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-md);font-size:var(--font-size-xs);cursor:pointer;transition:all var(--transition-fast);text-align:left}.prompt-button:hover:not(:disabled){background:var(--color-surface-elevated);border-color:var(--color-primary);color:var(--color-primary)}.prompt-button:disabled{opacity:.5;cursor:not-allowed}.chat-input-form{padding:var(--spacing-lg);border-top:1px solid var(--color-border);display:flex;gap:var(--spacing-sm)}.chat-input{flex:1 1;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-primary);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-family:var(--font-family);transition:all var(--transition-fast)}.chat-input:focus{outline:none;border-color:var(--color-primary);background:var(--color-surface-elevated)}.chat-input:disabled{opacity:.5;cursor:not-allowed}.chat-send{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border:none;color:#fff;width:40px;height:40px;border-radius:var(--radius-md);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.chat-send:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-md)}.chat-send:disabled{opacity:.5;cursor:not-allowed}@media (max-width:768px){.chat-window{bottom:5rem;right:1rem;left:1rem;width:auto;max-width:none;height:500px}.chat-toggle{bottom:1rem;right:1rem;width:56px;height:56px}.message-content{max-width:85%}}@media (max-width:480px){.chat-window{height:calc(100vh - 8rem);max-height:none}.suggested-prompts{max-height:150px;overflow-y:auto}}