:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--color-bg-primary: #ffffff;--color-bg-secondary: #f9fafb;--color-bg-tertiary: #f3f4f6;--color-bg-elevated: #ffffff;--color-bg-overlay: rgba(0, 0, 0, .5);--color-text-primary: #111827;--color-text-secondary: #6b7280;--color-text-tertiary: #9ca3af;--color-text-inverse: #ffffff;--color-text-disabled: #d1d5db;--color-border-primary: #e5e7eb;--color-border-secondary: #d1d5db;--color-border-focus: #3da5b4;--color-border-error: #ef4444;--color-brand-primary: #3da5b4;--color-brand-primary-hover: #4b81c2;--color-brand-secondary: #e75a2f;--color-brand-secondary-hover: #d14f29;--color-success: #10b981;--color-success-bg: #d1fae5;--color-warning: #f59e0b;--color-warning-bg: #fef3c7;--color-error: #ef4444;--color-error-bg: #fee2e2;--color-info: #3b82f6;--color-info-bg: #dbeafe;--color-message-user-bg: #e75a2f;--color-message-user-text: #ffffff;--color-message-assistant-bg: transparent;--color-message-assistant-text: var(--color-text-primary);--color-admin-primary: #1976d2;--color-admin-primary-hover: #1565c0;--color-admin-bg: #f5f5f5;--color-admin-header-bg: #1976d2;--color-hover-bg: #f3f4f6;--color-active-bg: #e5e7eb;--color-focus-ring: rgba(61, 165, 180, .5);--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1)}[data-theme="dark"],@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--color-bg-primary: #111827;--color-bg-secondary: #1f2937;--color-bg-tertiary: #374151;--color-bg-elevated: #1f2937;--color-bg-overlay: rgba(0, 0, 0, .7);--color-text-primary: #f9fafb;--color-text-secondary: #9ca3af;--color-text-tertiary: #6b7280;--color-text-inverse: #111827;--color-text-disabled: #4b5563;--color-border-primary: #374151;--color-border-secondary: #4b5563;--color-border-focus: #3da5b4;--color-border-error: #ef4444;--color-brand-primary: #3da5b4;--color-brand-primary-hover: #5bb5c3;--color-brand-secondary: #922d24;--color-brand-secondary-hover: #a33429;--color-success: #34d399;--color-success-bg: #064e3b;--color-warning: #fbbf24;--color-warning-bg: #78350f;--color-error: #f87171;--color-error-bg: #7f1d1d;--color-info: #60a5fa;--color-info-bg: #1e3a8a;--color-message-user-bg: #922d24;--color-message-user-text: #f9fafb;--color-message-assistant-bg: transparent;--color-message-assistant-text: var(--color-text-primary);--color-admin-primary: #2196f3;--color-admin-primary-hover: #42a5f5;--color-admin-bg: #0f172a;--color-admin-header-bg: #1e293b;--color-hover-bg: #374151;--color-active-bg: #4b5563;--color-focus-ring: rgba(61, 165, 180, .5);--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .6)}}:root{--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--sidebar-width: 280px;--header-height: 60px;--max-content-width: 800px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--z-base: 0;--z-elevated: 100;--z-sidebar-toggle: 100;--z-sidebar-overlay: 999;--z-sidebar: 1000;--z-sidebar-close: 1001;--z-modal: 2000;--z-tooltip: 3000;--font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--font-family-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;--font-size-xs: 12px;--font-size-sm: 13px;--font-size-base: 14px;--font-size-md: 15px;--font-size-lg: 18px;--font-size-xl: 20px;--font-size-2xl: 24px;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.6}*{box-sizing:border-box}body{margin:0;padding:0;font-family:var(--font-family-base);font-size:var(--font-size-base);line-height:var(--line-height-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--color-bg-primary);color:var(--color-text-primary);transition:background-color var(--transition-base),color var(--transition-base)}.app{width:100%;height:100vh;max-width:100%;margin:0;padding:0;position:fixed;top:0;left:0;transform:none;display:flex;flex-direction:column}.chat-layout{display:flex;height:100%;width:100%;position:relative;overflow:hidden}.sidebar{position:fixed;left:0;top:0;height:100%;width:var(--sidebar-width);background-color:var(--color-bg-secondary);border-right:1px solid var(--color-border-primary);transform:translate(-100%);transition:transform var(--transition-slow),background-color var(--transition-base),border-color var(--transition-base);z-index:var(--z-sidebar);display:flex;flex-direction:column;overflow:hidden}.sidebar.open{transform:translate(0)}.sidebar-overlay{position:fixed;inset:0;background-color:var(--color-bg-overlay);z-index:var(--z-sidebar-overlay);display:none;transition:opacity var(--transition-base)}.sidebar-overlay.visible{display:block}.sidebar-toggle{position:fixed;top:var(--space-sm);left:var(--space-sm);z-index:var(--z-sidebar-toggle);background-color:transparent;border:none;padding:var(--space-sm);cursor:pointer;border-radius:var(--radius-md);color:var(--color-text-secondary);transition:background-color var(--transition-base),color var(--transition-base)}.sidebar-toggle:hover{background-color:var(--color-bg-secondary);color:var(--color-text-primary)}.sidebar-toggle svg{width:24px;height:24px}.sidebar-close-btn{position:absolute;top:var(--space-sm);right:var(--space-sm);z-index:var(--z-sidebar-close);background-color:transparent;border:none;padding:var(--space-sm);cursor:pointer;border-radius:var(--radius-md);color:var(--color-text-secondary);transition:background-color var(--transition-base),color var(--transition-base)}.sidebar-close-btn:hover{background-color:var(--color-hover-bg);color:var(--color-text-primary)}.sidebar-close-btn svg{width:20px;height:20px}.main-content{flex:1;display:flex;flex-direction:column;width:100%;height:100%;overflow:hidden;position:relative}.chat-container{display:flex;flex-direction:column;flex:1;width:100%;max-width:100%;margin:0 auto;overflow:hidden;position:relative}.chat-header{display:flex;align-items:center;padding:var(--space-sm) var(--space-md) var(--space-sm) 60px;border-bottom:1px solid var(--color-border-primary);background-color:var(--color-bg-primary);min-height:var(--header-height);transition:background-color var(--transition-base),border-color var(--transition-base)}.chat-header h2{margin:0;font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);flex:1;transition:color var(--transition-base)}.sidebar-user-info{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md);margin:56px var(--space-md) 0 var(--space-md);background-color:var(--color-bg-primary);border-radius:var(--radius-lg);border:1px solid var(--color-border-primary);transition:background-color var(--transition-base),border-color var(--transition-base)}.user-avatar{width:40px;height:40px;border-radius:var(--radius-full);background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:var(--font-weight-semibold);font-size:var(--font-size-md);flex-shrink:0}.user-details{flex:1;min-width:0;overflow:hidden}.user-name{font-weight:var(--font-weight-semibold);font-size:var(--font-size-base);color:var(--color-text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color var(--transition-base)}.user-email{font-size:var(--font-size-xs);color:var(--color-text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color var(--transition-base)}.user-debug-badge{margin-top:var(--space-xs);padding:2px var(--space-sm);background-color:var(--color-warning);color:#fff;font-size:10px;font-weight:var(--font-weight-semibold);border-radius:var(--radius-sm);text-transform:uppercase;display:inline-block}.sidebar-section{padding:var(--space-md);border-top:1px solid var(--color-border-primary);transition:border-color var(--transition-base)}.admin-dashboard-link{width:100%;display:flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background-color:var(--color-info);border:none;border-radius:var(--radius-md);color:#fff;font-size:var(--font-size-base);font-weight:var(--font-weight-medium);cursor:pointer;transition:all var(--transition-base)}.admin-dashboard-link:hover{background-color:#1565c0;box-shadow:var(--shadow-sm)}.admin-icon{width:18px;height:18px}.sidebar-footer{margin-top:auto;padding:var(--space-md);border-top:1px solid var(--color-border-primary);transition:border-color var(--transition-base)}.signout-button{width:100%;display:flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background-color:transparent;border:1px solid var(--color-border-primary);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:var(--font-size-base);font-weight:var(--font-weight-medium);cursor:pointer;transition:all var(--transition-base)}.signout-button:hover{background-color:var(--color-bg-primary);color:var(--color-text-primary);border-color:var(--color-text-secondary)}.signout-icon{width:18px;height:18px}.chat-messages{flex:1;overflow-y:auto;padding:var(--space-md);display:flex;flex-direction:column;gap:var(--space-md);scroll-behavior:smooth;-webkit-overflow-scrolling:touch}.chat-messages::-webkit-scrollbar{width:4px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:var(--color-border-primary);border-radius:var(--radius-sm);transition:background var(--transition-base)}.chat-messages::-webkit-scrollbar-thumb:hover{background:var(--color-border-secondary)}.message{display:flex;flex-direction:column;max-width:100%;animation:fadeIn var(--transition-slow)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message strong{font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);margin-bottom:var(--space-sm);color:var(--color-text-secondary);transition:color var(--transition-base)}.message.user{align-items:flex-end}.message.user strong{display:none}.message.user .message-content{color:var(--color-message-user-text);background-color:var(--color-message-user-bg);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-xl) var(--radius-xl) var(--radius-sm) var(--radius-xl);max-width:85%;word-wrap:break-word;transition:background-color var(--transition-base),color var(--transition-base)}.message.assistant{align-items:flex-start}.message.assistant>div{background-color:var(--color-message-assistant-bg);padding:0;max-width:100%;word-wrap:break-word;color:var(--color-message-assistant-text);transition:color var(--transition-base)}.message.assistant strong{font-size:var(--font-size-base);margin-bottom:var(--space-sm)}.message p{margin:0 0 var(--space-sm) 0;line-height:var(--line-height-relaxed)}.message p:last-child{margin-bottom:0}.message code{background-color:var(--color-bg-secondary);color:var(--color-text-primary);padding:2px var(--space-sm);border-radius:var(--radius-sm);font-size:var(--font-size-sm);font-family:var(--font-family-mono);transition:background-color var(--transition-base),color var(--transition-base)}.message pre{background-color:var(--color-bg-secondary);padding:var(--space-sm);border-radius:var(--radius-md);overflow-x:auto;margin:var(--space-sm) 0;border:1px solid var(--color-border-primary);transition:background-color var(--transition-base),border-color var(--transition-base)}.message pre code{background-color:transparent;padding:0;border:none}.empty-state,.loading-state{display:flex;align-items:center;justify-content:center;flex:1;color:var(--color-text-secondary);font-size:var(--font-size-md);text-align:center;padding:var(--space-lg);transition:color var(--transition-base)}.chat-bottom-section{flex-shrink:0;background-color:var(--color-bg-primary);border-top:1px solid var(--color-border-primary);transition:background-color var(--transition-base),border-color var(--transition-base)}.chat-input-wrapper{padding:var(--space-md);background-color:var(--color-bg-primary);flex-shrink:0;transition:background-color var(--transition-base)}.chat-input{display:flex;gap:var(--space-sm);max-width:var(--max-content-width);margin:0 auto}.chat-input textarea{flex:1;padding:var(--space-sm) var(--space-md);border:1px solid var(--color-border-primary);border-radius:24px;resize:none;font-family:var(--font-family-base);font-size:var(--font-size-md);line-height:var(--line-height-normal);background-color:var(--color-bg-primary);color:var(--color-text-primary);max-height:120px;min-height:48px;transition:border-color var(--transition-base),background-color var(--transition-base),color var(--transition-base),box-shadow var(--transition-fast)}.chat-input textarea:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px var(--color-focus-ring)}.chat-input textarea::placeholder{color:var(--color-text-tertiary)}.chat-input button{padding:var(--space-sm) var(--space-lg);background-color:var(--color-brand-primary);color:#fff;border:none;border-radius:24px;cursor:pointer;font-weight:var(--font-weight-medium);font-size:var(--font-size-md);transition:background-color var(--transition-base),box-shadow var(--transition-base),transform var(--transition-fast);white-space:nowrap}.chat-input button:hover:not(:disabled){background-color:var(--color-brand-primary-hover);box-shadow:var(--shadow-sm)}.chat-input button:active:not(:disabled){transform:scale(.98)}.chat-input button:disabled{opacity:.5;cursor:not-allowed}.message-rating{display:flex;gap:2px;margin-top:var(--space-sm);align-items:center}.rating-segment{flex:1;height:20px;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);cursor:pointer;border-radius:2px;transition:all var(--transition-base);min-width:20px}.rating-segment:hover{opacity:.8;transform:scale(1.05)}.profile-picture{border-radius:var(--radius-full);object-fit:cover;flex-shrink:0}.tools-section{padding:var(--space-sm) var(--space-md) 0;max-width:var(--max-content-width);margin:0 auto;width:100%;background-color:var(--color-bg-primary);flex-shrink:0;transition:background-color var(--transition-base)}.tools-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-sm);padding:var(--space-xs) var(--space-sm)}.tools-header h4{margin:0;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.5px;transition:color var(--transition-base)}.tools-toggle{background:none;border:none;color:var(--color-text-secondary);cursor:pointer;padding:var(--space-xs);font-size:var(--font-size-xs);transition:color var(--transition-base)}.tools-toggle:hover{color:var(--color-text-primary)}.tools-list{display:flex;flex-wrap:wrap;gap:var(--space-sm);max-height:0;overflow:hidden;transition:max-height var(--transition-slow)}.tools-list.expanded{max-height:200px;margin-bottom:var(--space-sm)}.tool-chip{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background-color:transparent;border:1px solid var(--color-border-primary);border-radius:var(--radius-xl);font-size:var(--font-size-sm);cursor:pointer;transition:all var(--transition-base);color:var(--color-text-secondary)}.tool-chip.active{background-color:var(--color-brand-primary);border-color:var(--color-brand-primary);color:#fff}.tool-chip:hover:not(:disabled){border-color:var(--color-brand-primary);color:var(--color-brand-primary)}.tool-chip.active:hover{background-color:var(--color-brand-primary-hover);color:#fff}.tool-chip:disabled{opacity:.4;cursor:not-allowed}.tool-chip svg{width:14px;height:14px;flex-shrink:0}.user-selector{padding:var(--space-md);border-bottom:1px solid var(--color-border-primary);flex-shrink:0;transition:border-color var(--transition-base)}.user-selector h3{margin:0 0 var(--space-sm) 0;font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);text-transform:uppercase;letter-spacing:.5px;transition:color var(--transition-base)}.user-list{display:flex;flex-direction:column;gap:var(--space-xs);margin-bottom:var(--space-sm);max-height:200px;overflow-y:auto}.empty-message{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin:var(--space-sm) 0;transition:color var(--transition-base)}.user-item{display:flex;align-items:center;justify-content:space-between;padding:var(--space-sm) var(--space-sm);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);background-color:transparent}.user-item:hover{background-color:var(--color-bg-primary)}.user-item.active{background-color:var(--color-brand-primary)}.user-item.active .user-name{color:#fff;font-weight:var(--font-weight-medium)}.user-name{flex:1;font-size:var(--font-size-base);color:var(--color-text-primary);transition:color var(--transition-base)}.delete-btn{background:none;border:none;color:var(--color-text-secondary);font-size:20px;cursor:pointer;padding:0 var(--space-xs);opacity:0;transition:opacity var(--transition-base),color var(--transition-base);line-height:1}.user-item:hover .delete-btn,.conversation-item:hover .delete-btn{opacity:1}.user-item.active .delete-btn{color:#fff;opacity:.7}.user-item.active .delete-btn:hover{opacity:1}.delete-btn:hover{color:var(--color-error)}.add-user-form{display:flex;flex-direction:column;gap:var(--space-sm)}.add-user-form input{padding:var(--space-sm) var(--space-sm);border:1px solid var(--color-border-primary);border-radius:var(--radius-md);font-size:var(--font-size-base);background-color:var(--color-bg-primary);color:var(--color-text-primary);transition:all var(--transition-base)}.add-user-form input:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px var(--color-focus-ring)}.add-user-form input::placeholder{color:var(--color-text-tertiary)}.form-buttons{display:flex;gap:var(--space-sm)}.form-buttons button{flex:1;padding:var(--space-sm);border:none;border-radius:var(--radius-sm);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);cursor:pointer;transition:all var(--transition-base)}.form-buttons button:first-child{background-color:var(--color-brand-primary);color:#fff}.form-buttons button:first-child:hover:not(:disabled){background-color:var(--color-brand-primary-hover);box-shadow:var(--shadow-sm)}.form-buttons button:first-child:disabled{opacity:.5;cursor:not-allowed}.form-buttons button:last-child{background-color:var(--color-bg-primary);color:var(--color-text-primary);border:1px solid var(--color-border-primary)}.form-buttons button:last-child:hover:not(:disabled){background-color:var(--color-bg-secondary);border-color:var(--color-border-secondary)}.add-user-btn{width:100%;padding:var(--space-sm);background-color:transparent;border:1px dashed var(--color-border-primary);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:var(--font-size-base);cursor:pointer;transition:all var(--transition-base)}.add-user-btn:hover{border-color:var(--color-brand-primary);color:var(--color-brand-primary);background-color:var(--color-bg-primary)}.conversation-selector{flex:1;display:flex;flex-direction:column;overflow:hidden}.conversation-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md);border-bottom:1px solid var(--color-border-primary);transition:border-color var(--transition-base)}.conversation-header h3{margin:0;font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);text-transform:uppercase;letter-spacing:.5px;transition:color var(--transition-base)}.new-conversation-btn{width:32px;height:32px;border-radius:var(--radius-sm);border:1px solid var(--color-border-primary);background-color:transparent;color:var(--color-text-primary);font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-base);line-height:1}.new-conversation-btn:hover{background-color:var(--color-brand-primary);border-color:var(--color-brand-primary);color:#fff;box-shadow:var(--shadow-sm)}.conversation-list{flex:1;overflow-y:auto;padding:var(--space-sm)}.conversation-list::-webkit-scrollbar{width:4px}.conversation-list::-webkit-scrollbar-track{background:transparent}.conversation-list::-webkit-scrollbar-thumb{background:var(--color-border-primary);border-radius:var(--radius-sm);transition:background var(--transition-base)}.conversation-list::-webkit-scrollbar-thumb:hover{background:var(--color-border-secondary)}.conversation-item{display:flex;align-items:center;justify-content:space-between;padding:var(--space-sm);margin-bottom:var(--space-xs);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);background-color:transparent}.conversation-item:hover{background-color:var(--color-bg-primary)}.conversation-item.active{background-color:var(--color-brand-primary)}.conversation-content{flex:1;min-width:0}.conversation-title{font-size:var(--font-size-base);font-weight:var(--font-weight-medium);color:var(--color-text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color var(--transition-base)}.conversation-item.active .conversation-title{color:#fff}.conversation-date{font-size:var(--font-size-xs);color:var(--color-text-secondary);margin-top:2px;transition:color var(--transition-base)}.conversation-item.active .conversation-date{color:#fffc}.loading-message{color:var(--color-text-secondary);font-size:var(--font-size-sm);padding:var(--space-md);text-align:center;transition:color var(--transition-base)}@media (min-width: 768px){.sidebar{position:relative;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-toggle{display:block;left:var(--space-sm)}.sidebar-overlay{display:none!important}.chat-header h2{margin-left:0}.chat-container{max-width:1200px}.message.user>div{max-width:70%}}@media (max-width: 374px){.chat-input{flex-direction:column}.chat-input button{width:100%}}.admin-dashboard{min-height:100vh;background-color:var(--color-admin-bg);transition:background-color var(--transition-base)}.admin-header{background-color:var(--color-admin-header-bg);color:#fff;padding:var(--space-lg) var(--space-xl);box-shadow:var(--shadow-md);transition:background-color var(--transition-base)}.admin-header-content{max-width:1400px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.admin-header h1{margin:0;font-size:var(--font-size-2xl);font-weight:var(--font-weight-semibold)}.admin-header-actions{display:flex;align-items:center;gap:var(--space-md)}.admin-user-badge{background-color:#fff3;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-sm);font-size:var(--font-size-sm)}.admin-tabs{background-color:var(--color-bg-primary);border-bottom:2px solid var(--color-border-primary);display:flex;gap:0;max-width:1400px;margin:0 auto;transition:background-color var(--transition-base),border-color var(--transition-base)}.admin-tab{padding:var(--space-md) var(--space-xl);background:none;border:none;border-bottom:3px solid transparent;cursor:pointer;font-size:var(--font-size-base);font-weight:var(--font-weight-medium);color:var(--color-text-secondary);transition:all var(--transition-base)}.admin-tab:hover{background-color:var(--color-hover-bg);color:var(--color-admin-primary)}.admin-tab.active{color:var(--color-admin-primary);border-bottom-color:var(--color-admin-primary)}.admin-content{max-width:1400px;margin:0 auto;padding:var(--space-xl)}.admin-loading,.admin-error{text-align:center;padding:var(--space-2xl);font-size:var(--font-size-lg)}.admin-error{color:var(--color-error)}.admin-error h2{color:var(--color-error);margin-bottom:var(--space-md)}.admin-error-banner{background-color:var(--color-error-bg);color:var(--color-error);padding:var(--space-md);border-radius:var(--radius-sm);margin-bottom:var(--space-md);border-left:4px solid var(--color-error);transition:background-color var(--transition-base),color var(--transition-base)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--space-lg);margin-bottom:var(--space-xl)}.stat-card{background:var(--color-bg-primary);padding:var(--space-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:all var(--transition-base)}.stat-card:hover{box-shadow:var(--shadow-md)}.stat-card h3{margin:0 0 var(--space-sm) 0;font-size:var(--font-size-sm);color:var(--color-text-secondary);text-transform:uppercase;font-weight:var(--font-weight-semibold);transition:color var(--transition-base)}.stat-value{font-size:2.5rem;font-weight:var(--font-weight-bold);color:var(--color-admin-primary);margin:var(--space-sm) 0}.stat-label{font-size:var(--font-size-sm);color:var(--color-text-tertiary);margin:0;transition:color var(--transition-base)}.admin-table{width:100%;background:var(--color-bg-primary);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);margin-top:var(--space-md);transition:background-color var(--transition-base)}.admin-table thead{background-color:var(--color-bg-secondary);transition:background-color var(--transition-base)}.admin-table th,.admin-table td{padding:var(--space-md);text-align:left;border-bottom:1px solid var(--color-border-primary);transition:border-color var(--transition-base)}.admin-table th{font-weight:var(--font-weight-semibold);color:var(--color-text-primary);font-size:var(--font-size-sm);text-transform:uppercase;transition:color var(--transition-base)}.admin-table td{color:var(--color-text-primary);transition:color var(--transition-base)}.admin-table tbody tr:hover{background-color:var(--color-hover-bg)}.admin-table tbody tr:last-child td{border-bottom:none}.btn-primary,.btn-secondary,.btn-small,.btn-danger{padding:var(--space-sm) var(--space-md);border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);transition:all var(--transition-base)}.btn-primary{background-color:var(--color-admin-primary);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--color-admin-primary-hover);box-shadow:var(--shadow-sm)}.btn-secondary{background-color:var(--color-bg-primary);color:var(--color-admin-primary);border:1px solid var(--color-admin-primary)}.btn-secondary:hover:not(:disabled){background-color:var(--color-hover-bg)}.btn-small{padding:var(--space-xs) var(--space-sm);font-size:var(--font-size-xs)}.btn-danger{background-color:var(--color-error);color:#fff}.btn-danger:hover:not(:disabled){background-color:#c62828;box-shadow:var(--shadow-sm)}button:disabled{opacity:.5;cursor:not-allowed}.analytics-charts{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:var(--space-lg);margin-top:var(--space-xl)}.chart-section{background:var(--color-bg-primary);padding:var(--space-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:all var(--transition-base)}.chart-section:hover{box-shadow:var(--shadow-md)}.chart-section h2{margin:0 0 var(--space-md) 0;font-size:var(--font-size-lg);color:var(--color-text-primary);transition:color var(--transition-base)}.simple-chart{margin-top:var(--space-md)}.chart-labels{display:flex;justify-content:space-between;margin-bottom:var(--space-sm);font-size:var(--font-size-sm);color:var(--color-text-secondary);transition:color var(--transition-base)}.chart-svg{width:100%;height:200px;border:1px solid var(--color-border-primary);border-radius:var(--radius-sm);background-color:var(--color-bg-secondary);transition:background-color var(--transition-base),border-color var(--transition-base)}.chart-x-axis{display:flex;justify-content:space-between;margin-top:var(--space-sm);font-size:var(--font-size-xs);color:var(--color-text-tertiary);transition:color var(--transition-base)}.bar-chart{display:flex;flex-direction:column;gap:var(--space-sm)}.bar-item{display:flex;align-items:center;gap:var(--space-md)}.bar-label{min-width:80px;font-size:var(--font-size-sm);color:var(--color-text-secondary);transition:color var(--transition-base)}.bar-container{flex:1;height:30px;background-color:var(--color-bg-secondary);border-radius:var(--radius-sm);overflow:hidden;transition:background-color var(--transition-base)}.bar-fill{height:100%;display:flex;align-items:center;padding:0 var(--space-sm);transition:width var(--transition-slow)}.bar-count{color:#fff;font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);text-shadow:0 1px 2px rgba(0,0,0,.3)}.conversation-search,.staff-management{background:var(--color-bg-primary);padding:var(--space-xl);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:background-color var(--transition-base)}.search-form{display:flex;gap:var(--space-md);margin:var(--space-md) 0}.search-input{flex:1;padding:var(--space-sm);border:1px solid var(--color-border-primary);border-radius:var(--radius-sm);font-size:var(--font-size-base);background-color:var(--color-bg-primary);color:var(--color-text-primary);transition:all var(--transition-base)}.search-input:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px var(--color-focus-ring)}.search-input::placeholder{color:var(--color-text-tertiary)}.search-results{margin-top:var(--space-xl)}.results-count{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-bottom:var(--space-md);transition:color var(--transition-base)}.no-results{text-align:center;color:var(--color-text-tertiary);padding:var(--space-xl);transition:color var(--transition-base)}.conversation-viewer-overlay{position:fixed;inset:0;background-color:var(--color-bg-overlay);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);padding:var(--space-xl)}.conversation-viewer{background:var(--color-bg-primary);border-radius:var(--radius-md);box-shadow:var(--shadow-xl);max-width:900px;width:100%;max-height:90vh;display:flex;flex-direction:column;transition:background-color var(--transition-base)}.viewer-header{display:flex;justify-content:space-between;align-items:flex-start;padding:var(--space-lg);border-bottom:2px solid var(--color-border-primary);transition:border-color var(--transition-base)}.viewer-title h2{margin:0 0 var(--space-sm) 0;color:var(--color-text-primary);transition:color var(--transition-base)}.viewer-meta{display:flex;gap:var(--space-lg);font-size:var(--font-size-sm);color:var(--color-text-secondary);transition:color var(--transition-base)}.viewer-close{background:none;border:none;font-size:var(--font-size-lg);color:var(--color-text-tertiary);cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:all var(--transition-base)}.viewer-close:hover{background-color:var(--color-hover-bg);color:var(--color-text-primary)}.viewer-content{flex:1;overflow-y:auto;padding:var(--space-lg)}.messages-list{display:flex;flex-direction:column;gap:var(--space-lg)}.message{border-radius:var(--radius-md);padding:var(--space-md)}.message-user{background-color:var(--color-info-bg);border-left:4px solid var(--color-info);transition:background-color var(--transition-base)}.message-assistant{background-color:var(--color-success-bg);border-left:4px solid var(--color-success);transition:background-color var(--transition-base)}.message-header{display:flex;gap:var(--space-md);margin-bottom:var(--space-sm);font-size:var(--font-size-sm);color:var(--color-text-secondary);transition:color var(--transition-base)}.message-role{font-weight:var(--font-weight-semibold);color:var(--color-text-primary);transition:color var(--transition-base)}.message-rating{margin-left:auto;background-color:var(--color-success);color:#fff;padding:2px var(--space-sm);border-radius:var(--radius-sm);font-size:var(--font-size-xs)}.message-content{color:var(--color-text-primary);line-height:var(--line-height-relaxed);transition:color var(--transition-base)}.message-content p{margin:0}.staff-management-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-xl)}.staff-management-header h2{margin:0;color:var(--color-text-primary);transition:color var(--transition-base)}.staff-section{margin-bottom:var(--space-2xl)}.staff-section h3{margin:0 0 var(--space-sm) 0;color:var(--color-text-primary);transition:color var(--transition-base)}.section-description{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin-bottom:var(--space-md);transition:color var(--transition-base)}.no-data{text-align:center;color:var(--color-text-tertiary);padding:var(--space-xl);background-color:var(--color-bg-secondary);border-radius:var(--radius-sm);margin-top:var(--space-md);transition:background-color var(--transition-base),color var(--transition-base)}.staff-info-box{background-color:var(--color-info-bg);padding:var(--space-lg);border-radius:var(--radius-md);border-left:4px solid var(--color-info);margin-top:var(--space-xl);transition:background-color var(--transition-base)}.staff-info-box h4{margin:0 0 var(--space-sm) 0;color:var(--color-info)}.staff-info-box p{margin:var(--space-sm) 0;color:var(--color-text-primary);font-size:var(--font-size-sm);transition:color var(--transition-base)}.most-active-users{background:var(--color-bg-primary);padding:var(--space-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);margin-top:var(--space-xl);transition:background-color var(--transition-base)}.most-active-users h2{margin:0 0 var(--space-md) 0;font-size:var(--font-size-lg);color:var(--color-text-primary);transition:color var(--transition-base)}@media (max-width: 768px){.admin-header-content{flex-direction:column;gap:var(--space-md)}.admin-tabs{overflow-x:auto}.stats-grid,.analytics-charts{grid-template-columns:1fr}.conversation-viewer-overlay{padding:0}.conversation-viewer{max-width:100%;max-height:100vh;border-radius:0}.viewer-meta{flex-direction:column;gap:var(--space-sm)}.search-form{flex-direction:column}}.new-landing{min-height:100vh;background:linear-gradient(135deg,var(--color-bg-primary) 0%,var(--color-bg-secondary) 100%);display:flex;flex-direction:column;position:relative;transition:background var(--transition-base)}.landing-header{position:absolute;top:0;right:0;padding:var(--space-xl);z-index:var(--z-elevated)}.landing-login-btn{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:#fff;background-color:var(--color-brand-primary);border:none;border-radius:25px;cursor:pointer;transition:all var(--transition-slow);box-shadow:0 4px 12px #3da5b44d}.landing-login-btn:hover{background-color:var(--color-brand-primary-hover);transform:translateY(-2px);box-shadow:0 6px 16px #3da5b466}.microsoft-icon{width:18px;height:18px;flex-shrink:0}.landing-main{flex:1;display:flex;align-items:stretch;justify-content:stretch;padding:0;min-height:100vh}.hero-container{display:flex;width:100%;height:100%;background-color:var(--color-bg-elevated);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);overflow:hidden;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:background-color var(--transition-base)}.hero-image-section{flex:1;display:flex;align-items:center;justify-content:center;background:linear-gradient(45deg,var(--color-brand-primary),var(--color-brand-primary-hover));padding:var(--space-2xl)}.hero-image-wrapper{width:250px;height:250px;border-radius:var(--radius-full);overflow:hidden;border:6px solid white;box-shadow:var(--shadow-lg)}.hero-image{width:100%;height:100%;object-fit:cover}.hero-content-section{flex:1;padding:var(--space-2xl);display:flex;align-items:center}.hero-content{width:100%}.hero-title{font-size:2.5rem;font-weight:var(--font-weight-bold);color:var(--color-text-primary);margin:0 0 var(--space-md) 0;line-height:var(--line-height-tight);transition:color var(--transition-base)}.hero-subtitle{font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);color:var(--color-brand-primary);margin:0 0 var(--space-lg) 0;transition:color var(--transition-base)}.hero-description{font-size:var(--font-size-base);color:var(--color-text-secondary);line-height:var(--line-height-relaxed);margin:0 0 var(--space-xl) 0;transition:color var(--transition-base)}.hero-about{background-color:var(--color-bg-secondary);border-radius:var(--radius-lg);padding:var(--space-lg);border-left:4px solid var(--color-brand-primary);transition:background-color var(--transition-base)}.about-text{font-size:var(--font-size-sm);color:var(--color-text-secondary);line-height:var(--line-height-relaxed);margin:0;transition:color var(--transition-base)}@media (max-width: 768px){.landing-header{padding:var(--space-md)}.landing-login-btn{padding:var(--space-sm) var(--space-md);font-size:var(--font-size-xs)}.microsoft-icon{width:16px;height:16px}.landing-main{padding:var(--space-md)}.hero-container{flex-direction:column}.hero-image-section{padding:var(--space-xl)}.hero-image-wrapper{width:180px;height:180px}.hero-content-section{padding:var(--space-xl)}.hero-title{font-size:2rem}.hero-subtitle{font-size:var(--font-size-lg)}.hero-description{font-size:var(--font-size-sm)}}@media (max-width: 480px){.hero-image-wrapper{width:150px;height:150px}.hero-title{font-size:1.75rem}.hero-subtitle{font-size:var(--font-size-base)}.hero-description{font-size:var(--font-size-xs)}.hero-about{padding:var(--space-md)}.about-text{font-size:var(--font-size-sm)}}[data-theme="dark"] .hero-container,@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .hero-container{background-color:var(--color-bg-elevated)}:root:not([data-theme=light]) .hero-image-section{background:linear-gradient(45deg,var(--color-brand-primary),var(--color-brand-primary-hover))}:root:not([data-theme=light]) .hero-image-wrapper{border-color:var(--color-bg-secondary);box-shadow:var(--shadow-xl)}}@media (min-width: 769px){.landing-main{padding:0}.hero-container{width:100%;height:100vh;border-radius:0;box-shadow:none}.hero-image-section,.hero-content-section{padding:4rem}.landing-header{top:var(--space-lg);right:var(--space-lg)}}.auth-loading-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2)}.auth-loading-content{text-align:center;color:#fff}.spinner{width:60px;height:60px;margin:0 auto var(--space-lg);border:4px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:var(--radius-full);animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.auth-loading-text{font-size:var(--font-size-xl);font-weight:var(--font-weight-medium);margin:0}