.app{position:relative;display:flex;flex-direction:column;height:100dvh;margin:0 auto;background-color:transparent;z-index:2}.header,.messages-container,.input-container{position:relative;z-index:2}.header{position:relative;display:flex;justify-content:space-between;align-items:center;width:100vw;margin-left:calc(-50vw + 50%);padding:1rem 1.5rem;border-bottom:1px solid var(--color-border);background-color:var(--color-header-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.header-right{display:flex;align-items:center;gap:1rem}.user-info{display:flex;align-items:center;gap:.75rem;padding:.5rem 1rem;background-color:var(--color-input-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:.5rem;border:1px solid rgba(229,229,229,.5)}.user-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover}.user-name{font-size:.875rem;color:var(--color-text);font-weight:500}.logout-button{padding:.375rem .75rem;background-color:transparent;border:1px solid rgba(229,229,229,.5);border-radius:.375rem;color:#666;font-size:.75rem;cursor:pointer;transition:all .2s;font-family:inherit}.logout-button:hover{background-color:#e5e5e5cc;color:#1f1f1f}.login-screen{display:flex;align-items:center;justify-content:center;height:100vh;width:100vw;position:relative;background:linear-gradient(45deg,#ffffff80,#ffffffe6),url(/HeroImage.jpg);background-size:cover;background-position:center;background-repeat:no-repeat}.login-container{background-color:#fffffffa;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);padding:3rem;border-radius:1.5rem;box-shadow:0 20px 60px #0003;text-align:center;max-width:400px;width:90%;border:1px solid rgba(255,255,255,.3)}.login-container h1{font-size:1.75rem;margin-bottom:.5rem;color:#1f1f1f}.login-container>p{color:#666;margin-bottom:2rem;font-size:1rem}.google-login-button{display:flex;align-items:center;justify-content:center;gap:.75rem;width:100%;padding:.875rem 1.5rem;background-color:#4285f4;border:none;border-radius:.5rem;color:#fff;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s;font-family:inherit;box-shadow:0 2px 8px #4285f44d}.google-login-button:hover{box-shadow:0 4px 12px #4285f466;background-color:#357ae8;transform:translateY(-1px)}.google-login-button svg{width:20px;height:20px}.auth-error{background-color:#fee;color:#c33;padding:1rem;border-radius:.5rem;margin-bottom:1.5rem;font-size:.9375rem;border:1px solid #fcc;line-height:1.5;text-align:center;box-shadow:0 2px 4px #cc33331a}.login-footer{margin-top:2rem;font-size:.75rem;color:#999}.login-logo{width:100px;height:auto;margin-top:.3rem;display:block;margin-left:auto;margin-right:auto;opacity:.9;transition:opacity .2s}.login-logo:hover{opacity:1}.header-title-section{display:flex;align-items:center;gap:.75rem}.header h1{font-size:1.25rem;font-weight:600;color:var(--color-text);margin:0}.version-selector{padding:.375rem .75rem;background-color:var(--color-input-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--color-border);border-radius:.5rem;color:var(--color-text);font-size:.875rem;font-weight:500;font-family:inherit;cursor:pointer;transition:all .2s;outline:none}.version-selector:hover{background-color:#e5e5e5cc;border-color:#d5d5d599}.version-selector:focus{border-color:#1f1f1f}.rag-toggle{display:flex;align-items:center;gap:.5rem;cursor:pointer;font-size:.675rem;color:#ababab;align-self:center;margin-top:5px}.rag-toggle a{color:#666;text-decoration:none}.rag-toggle input[type=checkbox]{cursor:pointer}.messages-container{flex:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem}.messages-top-spacer,.messages-bottom-spacer{display:none}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;color:var(--color-text-secondary)}.empty-state h2{font-size:1.5rem;margin-bottom:.5rem;color:var(--color-text)}.empty-state p{font-size:1rem;max-width:500px;color:var(--color-text-secondary)}.message{display:flex;gap:1rem;animation:fadeIn .3s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{justify-content:flex-end}.message.user .message-content{background-color:var(--color-user-message-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:var(--color-button-text);border-radius:1rem 1rem .25rem;max-width:80%}.message.assistant .message-content{background-color:var(--color-assistant-message-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:var(--color-text);border-radius:1rem 1rem 1rem .25rem;max-width:80%}.message-content{padding:1rem 1.25rem;line-height:1.6;word-wrap:break-word}.message-text{font-size:.9375rem}.message.user .message-text{white-space:pre-wrap}.message-text h1,.message-text h2,.message-text h3,.message-text h4,.message-text h5,.message-text h6{margin-top:1.5rem;margin-bottom:.75rem;font-weight:600;line-height:1.3;color:inherit}.message-text h1{font-size:1.5rem}.message-text h2{font-size:1.25rem}.message-text h3{font-size:1.125rem}.message-text h4,.message-text h5,.message-text h6{font-size:1rem}.message-text h1:first-child,.message-text h2:first-child,.message-text h3:first-child{margin-top:0}.message-text p{margin:.75rem 0;line-height:1.6}.message-text p:first-child{margin-top:0}.message-text p:last-child{margin-bottom:0}.message-text ul,.message-text ol{margin:.75rem 0;padding-left:1.5rem}.message-text li{margin:.5rem 0;line-height:1.6}.message-text ul{list-style-type:disc}.message-text ol{list-style-type:decimal}.message-text ul ul,.message-text ol ol,.message-text ul ol,.message-text ol ul{margin:.25rem 0}.message-text strong,.message-text b{font-weight:600;color:inherit}.message-text em,.message-text i{font-style:italic}.message-text code{background-color:#0000001a;padding:.125rem .25rem;border-radius:.25rem;font-family:Monaco,Menlo,Ubuntu Mono,Consolas,source-code-pro,monospace;font-size:.875em}.message.user .message-text code{background-color:#fff3}.message-text pre{background-color:#0000000d;padding:1rem;border-radius:.5rem;overflow-x:auto;margin:1rem 0;line-height:1.5}.message.user .message-text pre{background-color:#ffffff1a}.message-text pre code{background-color:transparent;padding:0;font-size:.875rem}.message-text blockquote{border-left:3px solid rgba(0,0,0,.2);padding-left:1rem;margin:1rem 0;color:inherit;opacity:.9}.message.user .message-text blockquote{border-left-color:#ffffff4d}.message-text a{color:inherit;text-decoration:underline;text-decoration-color:#0000004d;text-underline-offset:2px}.message.user .message-text a{text-decoration-color:#ffffff80}.message-text a:hover{opacity:.8}.message-text hr{border:none;border-top:1px solid rgba(0,0,0,.1);margin:1.5rem 0}.message.user .message-text hr{border-top-color:#fff3}.message-text table{border-collapse:collapse;width:100%;margin:1rem 0}.message-text th,.message-text td{border:1px solid rgba(0,0,0,.1);padding:.5rem;text-align:left}.message.user .message-text th,.message.user .message-text td{border-color:#fff3}.message-text th{font-weight:600;background-color:#0000000d}.message.user .message-text th{background-color:#ffffff1a}.sources{margin-top:1rem;padding-top:1rem;border-top:1px solid rgba(0,0,0,.1);font-size:.8125rem}.message.user .sources{border-top-color:#fff3}.sources strong{display:block;margin-bottom:.5rem;font-weight:600}.sources ul{list-style:none;padding-left:0}.sources li{margin-bottom:.5rem;padding-left:1rem;position:relative;color:#666}.sources li:before{content:"•";position:absolute;left:0;color:#999}.typing-indicator{display:flex;gap:.25rem;padding:.5rem 0}.typing-indicator span{width:8px;height:8px;border-radius:50%;background-color:#999;animation:typing 1.4s infinite ease-in-out}.typing-indicator span:nth-child(1){animation-delay:0s}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.7}30%{transform:translateY(-10px);opacity:1}}.input-container{padding:1rem 1.5rem}.input-wrapper{display:flex;align-items:center;gap:.75rem;max-width:100%;background-color:var(--color-input-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:1.5rem;padding:.75rem 1rem;border:1px solid var(--color-border);transition:border-color .2s}.input-wrapper:focus-within{border-color:#1f1f1f}.input-field{flex:1;border:none;background:transparent;resize:none;font-size:.9375rem;font-family:inherit;color:var(--color-text);outline:none;max-height:200px;overflow-y:auto;line-height:1.5}.input-field::placeholder{color:#999}.send-button{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;background-color:var(--color-button-bg);color:var(--color-button-text);border-radius:50%;cursor:pointer;transition:background-color .2s,opacity .2s;flex-shrink:0}.send-button:hover:not(:disabled){background-color:#333}.send-button:disabled{opacity:.4;cursor:not-allowed}.messages-container::-webkit-scrollbar{width:8px}.messages-container::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb{background:#ccc;border-radius:4px}.messages-container::-webkit-scrollbar-thumb:hover{background:#999}.selected-images{display:flex;gap:.75rem;padding:.75rem 1.5rem;flex-wrap:wrap;border-bottom:1px solid #e5e5e5}.selected-image-preview{position:relative;width:80px;height:80px;border-radius:.5rem;overflow:hidden;border:1px solid #e5e5e5;background-color:#f5f5f5}.selected-image-preview img{width:100%;height:100%;object-fit:cover}.remove-image-btn{position:absolute;top:.25rem;right:.25rem;width:24px;height:24px;border:none;background-color:#000000b3;color:#fff;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.25rem;line-height:1;transition:background-color .2s}.remove-image-btn:hover{background-color:#000000e6}.action-buttons{display:flex;flex-direction:row;align-items:center;gap:.5rem;margin-bottom:.75rem;padding:0 .25rem}.action-button{display:flex;align-items:center;gap:.5rem;border:none;background-color:transparent;color:#666;cursor:pointer;transition:all .2s;font-size:.875rem;font-family:inherit}.action-button:hover:not(:disabled){color:#1f1f1f}.action-button:disabled{opacity:.4;cursor:not-allowed}.pill-button{padding:.5rem 1rem;background-color:#f5f5f5b3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(229,229,229,.5);border-radius:9999px;color:#1f1f1f;font-size:small;font-weight:500}.pill-button:hover:not(:disabled){background-color:#e5e5e5cc;border-color:#d5d5d599}.pill-button:active:not(:disabled){background-color:#d5d5d5e6}.pill-button svg{flex-shrink:0}.message-images{display:flex;flex-direction:column;gap:.75rem;margin-bottom:.75rem}.message-image-wrapper{border-radius:.5rem;overflow:hidden;max-width:100%;border:1px solid rgba(0,0,0,.1)}.message.user .message-image-wrapper{border-color:#fff3}.message-image{width:100%;height:auto;display:block;max-width:500px}@media (max-width: 768px){.app{max-width:100%;height:100lvh;height:100dvh;position:relative}.header{position:fixed;top:0;left:0;right:0;width:100%;margin-left:0;padding:.75rem 1rem;padding-top:calc(.75rem + env(safe-area-inset-top));flex-wrap:wrap;z-index:100;background-color:var(--color-header-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--color-border)}.rag-toggle{position:fixed;top:calc(60px + env(safe-area-inset-top));left:0;right:0;z-index:99;background-color:var(--color-header-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:.25rem .75rem .375rem;margin-top:0;justify-content:center}.header h1{font-size:0;position:relative}.header h1:before{content:"ChatBMS";font-size:1.125rem;font-weight:600;color:var(--color-text)}.header-title-section{gap:.5rem}.version-selector{padding:.25rem .5rem;font-size:.8125rem;background-color:var(--color-input-bg);border-color:var(--color-border);color:var(--color-text)}.user-info{padding:.375rem .75rem;gap:.5rem}.user-avatar{width:28px;height:28px}.user-name{font-size:.8125rem;display:none}.logout-button{padding:.25rem .5rem;font-size:.6875rem}.messages-container{position:fixed;top:0;left:0;right:0;bottom:0;width:100%;height:100lvh;height:100dvh;padding:1rem;gap:1rem;overflow-y:auto;-webkit-overflow-scrolling:touch;flex:none;max-height:none;z-index:1}.messages-top-spacer{display:block;flex-shrink:0;height:calc(70px + env(safe-area-inset-top))}.messages-bottom-spacer{display:block;flex-shrink:0;height:calc(140px + env(safe-area-inset-bottom))}.message-content{padding:.875rem 1rem;max-width:90%}.message-text{font-size:.875rem}.input-container{position:fixed;bottom:0;left:0;right:0;width:100%;padding:1.625rem .75rem;padding-bottom:calc(.75rem + env(safe-area-inset-bottom));z-index:100;border-top:0px solid rgba(229,229,229,.5)}.input-container:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background-color:var(--color-header-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);z-index:-1;mask-image:linear-gradient(to top,#000,#000 40%,#000c,#0006,#0000);-webkit-mask-image:linear-gradient(to top,rgba(0,0,0,1) 0%,rgba(0,0,0,1) 40%,rgba(0,0,0,.8) 60%,rgba(0,0,0,.4) 80%,rgba(0,0,0,0) 100%)}.input-wrapper{padding:.625rem .875rem}.input-field{font-size:16px}.send-button{width:32px;height:32px}.action-button{font-size:.8125rem;padding:.375rem .75rem}.pill-button{padding:.375rem .75rem;font-size:.75rem}.pill-button svg{width:18px;height:18px}.selected-images{padding:.5rem 1rem;gap:.5rem}.selected-image-preview{width:60px;height:60px}.message-image{max-width:100%}.empty-state{padding-top:calc(80px + env(safe-area-inset-top));padding-bottom:calc(140px + env(safe-area-inset-bottom))}.login-container{padding:2rem 1.5rem;max-width:90%;margin:1rem}.login-container h1{font-size:1.5rem}.login-container>p{font-size:.9375rem;margin-bottom:1.5rem}.google-login-button{padding:.75rem 1.25rem;font-size:.9375rem}.login-logo{width:80px}}@media (max-width: 480px){.header{padding:.625rem .75rem;padding-top:calc(.625rem + env(safe-area-inset-top))}.header h1{font-size:0}.header h1:before{font-size:1rem}.version-selector{font-size:.75rem;padding:.25rem .5rem}.messages-container{padding:.75rem;gap:.75rem}.messages-top-spacer{display:block;height:calc(65px + env(safe-area-inset-top))}.messages-bottom-spacer{display:block;height:calc(130px + env(safe-area-inset-bottom))}.message-content{padding:.75rem;max-width:95%}.empty-state h2{font-size:1.25rem}.empty-state p{font-size:.9375rem;padding:0 1rem}.input-container{padding:.625rem .75rem;padding-bottom:calc(.625rem + env(safe-area-inset-bottom))}.input-wrapper{padding:.5rem .75rem}.login-container{padding:1.5rem 1rem}.login-container h1{font-size:1.25rem}.login-container>p{font-size:.875rem}.google-login-button{padding:.625rem 1rem;font-size:.875rem}.login-logo{width:70px}}*{margin:0;padding:0;box-sizing:border-box}:root{--vh: 1vh;--vh-full: 1vh;--color-background: #ffffff;--color-text: #1f1f1f;--color-text-secondary: #666;--color-border: #e5e5e5;--color-header-bg: rgba(255, 255, 255, .85);--color-input-bg: rgba(245, 245, 245, .7);--color-user-message-bg: rgba(31, 31, 31, .8);--color-assistant-message-bg: rgba(245, 245, 245, .7);--color-button-bg: #2c2b31;--color-button-text: #ffffff}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--color-background);color:var(--color-text);height:100vh;height:100dvh;overflow:hidden}#root{position:relative;height:100vh;height:100dvh;width:100%;display:flex;flex-direction:column;overflow:hidden;background-color:var(--color-background)}.background-video-container{position:fixed;top:0;left:50%;transform:translate(-50%);width:100vw;max-width:70%;height:100vh;height:100lvh;min-height:-webkit-fill-available;z-index:0;pointer-events:none;background-color:var(--color-background)}.background-video{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:contain;object-position:center bottom;z-index:0;pointer-events:none}.background-video-overlay{position:absolute;bottom:0;left:0;width:100%;height:100%;z-index:1;pointer-events:none}body.mode-engineer .background-video-overlay{background:radial-gradient(ellipse 50% 60% at center bottom,transparent,white)}body.mode-program .background-video-overlay{background:radial-gradient(ellipse 50% 60% at center bottom,transparent,#1a1a1a)}@media (max-width: 768px){.background-video-container{max-width:100%;width:100vw;top:0;bottom:0;height:auto;min-height:100vh;min-height:100lvh;min-height:calc(var(--vh-full, 1vh) * 100);min-height:-webkit-fill-available}body.mode-engineer .background-video-overlay{background:radial-gradient(ellipse 60% 35% at center bottom,transparent,white)}body.mode-program .background-video-overlay{background:radial-gradient(ellipse 60% 35% at center bottom,transparent,#1a1a1a)}}@media (max-width: 480px){.background-video-container{max-width:100%}body.mode-engineer .background-video-overlay{background:radial-gradient(ellipse 70% 25% at center bottom,transparent,white)}body.mode-program .background-video-overlay{background:radial-gradient(ellipse 70% 25% at center bottom,transparent,#1a1a1a)}}