:root{--bti-primary: #6B4C9A;--bti-primary-light: #8B6BB9;--bti-primary-dark: #4B2C7A;--bti-secondary: #F4A460;--bti-secondary-light: #FFB380;--bti-secondary-dark: #E49450;--bti-warm-accent: #FF7F50;--bti-success: #4CAF50;--bti-error: #F44336;--bti-warning: #FF9800;--bti-info: #2196F3;--bti-gray-50: #FAFAFA;--bti-gray-100: #F5F5F5;--bti-gray-200: #EEEEEE;--bti-gray-300: #E0E0E0;--bti-gray-400: #BDBDBD;--bti-gray-500: #9E9E9E;--bti-gray-600: #757575;--bti-gray-700: #616161;--bti-gray-800: #424242;--bti-gray-900: #212121;--text-primary: var(--bti-gray-900);--text-secondary: var(--bti-gray-600);--text-disabled: var(--bti-gray-400);--bg-primary: #FFFFFF;--bg-secondary: var(--bti-gray-50);--border-color: var(--bti-gray-300);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;--font-size-xs: 12px;--font-size-sm: 14px;--font-size-base: 16px;--font-size-lg: 18px;--font-size-xl: 20px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .12), 0 1px 2px rgba(0, 0, 0, .24);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1), 0 2px 4px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1), 0 6px 10px rgba(0, 0, 0, .08)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{font-family:var(--font-family);font-size:var(--font-size-base);color:var(--text-primary);background-color:var(--bg-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.chat-app{display:flex;height:100vh;max-width:100%;margin:0 auto;background:var(--bg-primary)}.chat-main-content{display:flex;flex-direction:column;flex:1;height:100vh;min-width:0}.chat-header{background:linear-gradient(135deg,var(--bti-primary),var(--bti-primary-dark));color:#fff;box-shadow:var(--shadow-md);z-index:100}.header-content{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md);max-width:1200px;margin:0 auto}.logo-container{display:flex;align-items:center}.mary-morrissey-logo{width:40px;height:40px;border-radius:50%;object-fit:cover;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2))}.chat-title{flex:1;font-size:var(--font-size-xl);font-weight:600;margin-left:var(--spacing-md);letter-spacing:-.5px}.header-actions{display:flex;align-items:center;gap:var(--spacing-sm)}.new-chat-button{display:flex;align-items:center;gap:var(--spacing-xs);background:#fff3;border:1px solid rgba(255,255,255,.3);color:#fff;padding:var(--spacing-sm) var(--spacing-md);cursor:pointer;border-radius:8px;font-size:var(--font-size-sm);font-weight:500;transition:all var(--transition-fast)}.new-chat-button:hover{background:#ffffff4d;border-color:#ffffff80;transform:translateY(-1px)}.new-chat-button:active{transform:translateY(0)}.new-chat-button .button-text{display:inline}@media (max-width: 480px){.new-chat-button .button-text{display:none}}.menu-button{background:transparent;border:none;color:#fff;padding:var(--spacing-sm);cursor:pointer;border-radius:8px;transition:background-color var(--transition-fast)}.menu-button:hover{background-color:#ffffff1a}.menu-icon{display:block;width:24px;height:2px;background:#fff;position:relative}.menu-icon:before,.menu-icon:after{content:"";position:absolute;width:24px;height:2px;background:#fff;left:0}.menu-icon:before{top:-8px}.menu-icon:after{bottom:-8px}.chat-main{flex:1;overflow:hidden;display:flex;flex-direction:column;background:var(--bg-secondary)}.messages-container{flex:1;overflow-y:auto;padding:var(--spacing-lg);scroll-behavior:smooth}.messages-container::-webkit-scrollbar{width:8px}.messages-container::-webkit-scrollbar-track{background:var(--bti-gray-100)}.messages-container::-webkit-scrollbar-thumb{background:var(--bti-gray-400);border-radius:4px}.messages-container::-webkit-scrollbar-thumb:hover{background:var(--bti-gray-500)}.message{display:flex;margin-bottom:var(--spacing-lg);animation:fadeInUp var(--transition-base) ease-out}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.assistant-message{justify-content:flex-start}.user-message{justify-content:flex-end}.message-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:var(--font-size-xs);font-weight:600}.assistant-message .message-avatar{background:linear-gradient(135deg,var(--bti-primary),var(--bti-primary-light));color:#fff;margin-right:var(--spacing-sm)}.user-message .message-avatar{background:linear-gradient(135deg,var(--bti-secondary),var(--bti-secondary-light));color:#fff;margin-left:var(--spacing-sm);order:1}.avatar-text{text-transform:uppercase}.avatar-image{width:100%;height:100%;border-radius:50%;object-fit:cover}.message-content{max-width:70%;background:#fff;padding:var(--spacing-md);border-radius:16px;box-shadow:var(--shadow-sm);word-wrap:break-word}.user-message .message-content{background:linear-gradient(135deg,var(--bti-primary),var(--bti-primary-light));color:#fff}.message-content p{margin:0;line-height:1.5}.welcome-message .message-content{background:linear-gradient(135deg,var(--bti-gray-50),white);border:1px solid var(--bti-gray-200)}.typing-indicator{display:flex;align-items:flex-start;margin-bottom:var(--spacing-lg);padding:0 var(--spacing-lg);animation:fadeInUp var(--transition-base) ease-out}.typing-indicator .message-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:linear-gradient(135deg,var(--bti-primary),var(--bti-primary-light));color:#fff;margin-right:var(--spacing-sm)}.typing-indicator .avatar-image{width:100%;height:100%;border-radius:50%;object-fit:cover}.typing-bubble{background:#fff;padding:var(--spacing-md);border-radius:16px;box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:4px}.typing-dot{width:8px;height:8px;background:var(--bti-gray-400);border-radius:50%;animation:typing 1.4s infinite}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);background:var(--bti-gray-400)}30%{transform:translateY(-10px);background:var(--bti-primary)}}.chat-footer{background:#fff;border-top:1px solid var(--border-color);box-shadow:0 -2px 10px #0000000d}.chat-input-form{padding:var(--spacing-md);max-width:1200px;margin:0 auto}.input-container{display:flex;align-items:flex-end;gap:var(--spacing-sm);background:var(--bg-secondary);border-radius:24px;padding:var(--spacing-sm);border:2px solid transparent;transition:border-color var(--transition-fast)}.input-container:focus-within{border-color:var(--bti-primary)}.chat-input{flex:1;background:transparent;border:none;outline:none;resize:none;font-family:var(--font-family);font-size:var(--font-size-base);padding:var(--spacing-sm) var(--spacing-md);min-height:44px;max-height:120px;line-height:1.5}.chat-input::placeholder{color:var(--text-disabled)}.input-actions{display:flex;align-items:center;gap:var(--spacing-sm)}.char-counter{font-size:var(--font-size-xs);color:var(--text-secondary);padding:0 var(--spacing-sm)}.char-counter.warning{color:var(--bti-warning);font-weight:600}.send-button{width:44px;height:44px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--bti-primary),var(--bti-primary-light));color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);box-shadow:var(--shadow-sm)}.send-button:hover:not(:disabled){transform:scale(1.05);box-shadow:var(--shadow-md)}.send-button:active:not(:disabled){transform:scale(.95)}.send-button:disabled{opacity:.5;cursor:not-allowed;background:var(--bti-gray-300)}.send-button svg{width:20px;height:20px}@media (max-width: 768px){.chat-title{font-size:var(--font-size-lg)}.message-content{max-width:85%}.messages-container{padding:var(--spacing-md)}.chat-input-form{padding:var(--spacing-sm)}}@media (max-width: 480px){.header-content{padding:var(--spacing-sm)}.chat-title{font-size:var(--font-size-base)}.message-content{max-width:90%;font-size:var(--font-size-sm)}.message-avatar{width:32px;height:32px}}.loading{position:relative;overflow:hidden}.loading:after{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);animation:shimmer 2s infinite}@keyframes shimmer{to{left:100%}}.suggestions-container{padding:var(--spacing-lg);border-top:1px solid var(--border-color);background:var(--bg-secondary)}.suggestions-title{font-size:var(--font-size-sm);font-weight:600;color:var(--text-secondary);margin-bottom:var(--spacing-md);text-align:center}.suggestions-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-sm);max-width:800px;margin:0 auto}.suggestion-button{background:linear-gradient(135deg,var(--bti-primary),var(--bti-primary-light));color:#fff;border:none;border-radius:12px;padding:var(--spacing-md);font-size:var(--font-size-sm);font-weight:500;text-align:left;cursor:pointer;transition:all var(--transition-fast);box-shadow:var(--shadow-sm);line-height:1.4}.suggestion-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);background:linear-gradient(135deg,var(--bti-primary-light),var(--bti-primary))}.suggestion-button:active{transform:translateY(0);box-shadow:var(--shadow-sm)}@media (max-width: 768px){.suggestions-grid{grid-template-columns:1fr}.suggestion-button{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-xs)}}.message-sources{margin-top:var(--spacing-md);padding-top:var(--spacing-sm);border-top:1px solid var(--bti-gray-200)}.sources-title{font-size:var(--font-size-xs);font-weight:600;color:var(--text-secondary);margin:0 0 var(--spacing-sm) 0}.sources-list{display:flex;flex-wrap:wrap;gap:var(--spacing-xs)}.source-button{background:var(--bti-gray-100);border:1px solid var(--bti-gray-300);border-radius:6px;padding:2px 6px;font-size:var(--font-size-xs);color:var(--bti-primary);cursor:pointer;transition:all var(--transition-fast);text-decoration:none}.source-button:hover{background:var(--bti-primary);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-sm)}.source-button:active{transform:translateY(0)}.message-followup{margin-top:var(--spacing-md);padding-top:var(--spacing-sm);border-top:1px solid var(--bti-gray-200)}.followup-title{font-size:var(--font-size-xs);font-weight:600;color:var(--text-secondary);margin:0 0 var(--spacing-sm) 0}.followup-list{display:flex;flex-direction:column;gap:var(--spacing-xs)}.followup-button{background:linear-gradient(135deg,var(--bti-primary-light),var(--bti-primary));border:none;border-radius:8px;padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-sm);color:#fff;cursor:pointer;transition:all var(--transition-base);text-align:left;font-weight:500;line-height:1.4;box-shadow:var(--shadow-sm)}.followup-button:hover{background:linear-gradient(135deg,var(--bti-primary),var(--bti-primary-dark));transform:translateY(-2px);box-shadow:var(--shadow-md)}.followup-button:active{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn var(--transition-fast) ease-out}.source-modal{background:#fff;border-radius:12px;max-width:600px;max-height:70vh;width:90%;box-shadow:var(--shadow-lg);overflow:hidden;animation:modalSlideIn var(--transition-base) ease-out}@keyframes modalSlideIn{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md);border-bottom:1px solid var(--bti-gray-200);background:var(--bti-gray-50)}.modal-header h3{margin:0;font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary)}.modal-close-button{background:none;border:none;font-size:24px;color:var(--text-secondary);cursor:pointer;padding:4px;border-radius:4px;transition:background-color var(--transition-fast)}.modal-close-button:hover{background:var(--bti-gray-200);color:var(--text-primary)}.modal-content{padding:var(--spacing-md);overflow-y:auto;max-height:50vh}.modal-content p{line-height:1.6;color:var(--text-primary);margin-bottom:var(--spacing-md)}.source-link{display:inline-block;background:linear-gradient(135deg,var(--bti-primary),var(--bti-primary-light));color:#fff;text-decoration:none;padding:var(--spacing-sm) var(--spacing-md);border-radius:6px;font-size:var(--font-size-sm);font-weight:500;transition:all var(--transition-fast)}.source-link:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.toast{position:fixed;bottom:100px;left:50%;transform:translate(-50%);padding:12px 24px;border-radius:24px;z-index:1000;font-size:var(--font-size-sm);font-weight:500;animation:fadeInUp .3s ease-out}.toast-success{background:var(--bti-success);color:#fff}.toast-info{background:var(--bti-gray-800);color:#fff}.toast-error{background:var(--bti-error);color:#fff}.chat-sidebar{width:320px;height:100vh;background:#fff;border-right:1px solid var(--border-color);box-shadow:var(--shadow-md);display:flex;flex-direction:column;flex-shrink:0;position:relative;z-index:1000;transition:transform var(--transition-base),width var(--transition-base)}.chat-sidebar.collapsed{width:60px;overflow:hidden}.chat-sidebar.collapsed .sidebar-content,.chat-sidebar.collapsed .sidebar-header h2{display:none}@media (max-width: 768px){.chat-sidebar{position:fixed;top:0;left:0;transform:translate(-100%);z-index:1001}.chat-sidebar.open{transform:translate(0)}.chat-sidebar.collapsed{width:320px;transform:translate(-100%)}.chat-main-content{width:100%}}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md);border-bottom:1px solid var(--border-color);background:linear-gradient(135deg,var(--bti-primary),var(--bti-primary-light))}.sidebar-header h2{margin:0;font-size:var(--font-size-lg);font-weight:600;color:#fff;flex:1;text-align:center}.sidebar-toggle{background:none;border:none;color:#fff;cursor:pointer;padding:var(--spacing-xs);border-radius:4px;transition:background-color var(--transition-fast);display:flex;align-items:center;justify-content:center}.sidebar-toggle:hover{background:#fff3}.sidebar-toggle svg{width:20px;height:20px}.chat-sidebar.collapsed .sidebar-header{justify-content:center;padding:var(--spacing-sm)}.chat-sidebar.collapsed .sidebar-toggle{margin:0}.sidebar-content{flex:1;overflow-y:auto;padding:var(--spacing-sm)}.conversations-list{display:flex;flex-direction:column;gap:var(--spacing-xs)}.conversation-item{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;padding:var(--spacing-sm);cursor:pointer;transition:all var(--transition-fast);position:relative}.conversation-item:hover{background:var(--bti-gray-50);border-color:var(--bti-primary-light)}.conversation-item.active{background:linear-gradient(135deg,var(--bti-primary-light),var(--bti-primary));color:#fff;border-color:var(--bti-primary)}.conversation-title{font-size:var(--font-size-sm);font-weight:500;margin:0 0 4px;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-preview{font-size:var(--font-size-xs);color:var(--text-secondary);margin:0;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-item.active .conversation-preview{color:#fffc}.conversation-date{position:absolute;top:var(--spacing-xs);right:var(--spacing-xs);font-size:10px;color:var(--text-disabled);opacity:.7}.conversation-item.active .conversation-date{color:#fff9}.conversation-delete{position:absolute;top:50%;right:var(--spacing-xs);transform:translateY(-50%);background:var(--bti-error);border:none;color:#fff;width:20px;height:20px;border-radius:50%;cursor:pointer;opacity:0;transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center;font-size:12px}.conversation-item:hover .conversation-delete{opacity:1}.conversation-delete:hover{background:#d32f2f;transform:translateY(-50%) scale(1.1)}.sidebar-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:999;opacity:0;visibility:hidden;transition:all var(--transition-fast)}.sidebar-overlay.open{opacity:1;visibility:visible}@media (min-width: 769px){.sidebar-overlay{display:none}}.hamburger-menu{background:none;border:none;color:#fff;cursor:pointer;padding:var(--spacing-xs);border-radius:4px;transition:background-color var(--transition-fast);display:none}.hamburger-menu:hover{background:#fff3}.hamburger-menu svg{width:24px;height:24px}@media (max-width: 768px){.hamburger-menu{display:flex;align-items:center;justify-content:center}}@media (max-width: 768px){.chat-sidebar{width:280px}}@media (max-width: 480px){.chat-sidebar{width:260px}}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}