*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--white: #FFFFFF;--black: #000000;--gray-100: #F5F5F5;--gray-200: #E5E5E5;--gray-300: #D4D4D4;--gray-400: #A3A3A3;--gray-500: #737373;--gray-600: #525252;--gray-700: #404040;--gray-800: #262626;--gray-900: #171717;--bg-glass: rgba(255, 255, 255, .08);--bg-glass-light: rgba(255, 255, 255, .12);--border-light: rgba(255, 255, 255, .15);--shadow: 0 4px 24px rgba(0, 0, 0, .2);--transition: all .2s ease}html,body{height:100%;font-family:Inter,sans-serif;overflow:hidden}body{display:flex;justify-content:center;align-items:center}.video-bg{position:fixed;top:0;left:0;width:100%;height:100%;object-fit:cover;z-index:-2}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:-1}.header{position:fixed;top:0;left:0;right:0;display:flex;align-items:flex-start;justify-content:space-between;padding:24px 48px;z-index:100}.logo{display:flex;align-items:center;text-decoration:none;transition:var(--transition)}.logo img{height:75px;width:auto}.logo:hover{opacity:.8}.nav{display:flex;align-items:flex-start;gap:40px;padding-top:4px}.nav-link{font-family:Raleway,sans-serif;font-size:.95rem;font-weight:300;color:var(--gray-400);text-decoration:none;transition:var(--transition);position:relative;letter-spacing:.04em}.nav-link:hover,.nav-link.active{color:var(--white)}.nav-link.active:after{content:"";position:absolute;bottom:-6px;left:0;right:0;height:1px;background:var(--white)}.menu-toggle{display:none;flex-direction:column;justify-content:center;gap:6px;width:32px;height:32px;background:transparent;border:none;cursor:pointer;padding:4px}.menu-toggle span{display:block;width:100%;height:1.5px;background:var(--white);transition:var(--transition)}.menu-toggle.active span:first-child{transform:rotate(45deg) translate(5px,5px)}.menu-toggle.active span:last-child{transform:rotate(-45deg) translate(5px,-5px)}.mobile-menu{position:fixed;inset:0;background:#000000f2;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);z-index:99;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:var(--transition)}.mobile-menu.active{opacity:1;visibility:visible}.mobile-nav{display:flex;flex-direction:column;align-items:center;gap:32px}.mobile-nav-link{font-family:Raleway,sans-serif;font-size:1.5rem;font-weight:300;color:var(--gray-400);text-decoration:none;transition:var(--transition);letter-spacing:.04em}.mobile-nav-link:hover,.mobile-nav-link.active{color:var(--white)}.container{width:100%;height:100%;display:flex;justify-content:center;align-items:center;padding:100px 20px 20px}.landing{display:flex;flex-direction:column;align-items:center;gap:48px;animation:fadeIn .6s ease-out}.logo-container{text-align:center}.title{font-family:Raleway,sans-serif;font-size:3.5rem;font-weight:300;color:var(--white);margin-bottom:16px;letter-spacing:.06em}.subtitle{font-size:1.1rem;color:var(--gray-400);font-weight:400}.initial-form{width:100%;max-width:520px}.input-wrapper{display:flex;align-items:center;background:var(--bg-glass);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--border-light);border-radius:12px;padding:6px;transition:var(--transition)}.input-wrapper:focus-within{border-color:#ffffff4d;background:var(--bg-glass-light)}.initial-input{flex:1;background:transparent;border:none;outline:none;font-size:1rem;color:var(--white);padding:14px 16px}.initial-input::placeholder{color:var(--gray-500)}.send-btn{width:48px;height:48px;border-radius:8px;border:none;background:var(--white);color:var(--black);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--transition);flex-shrink:0}.send-btn:hover{background:var(--gray-200)}.send-btn:active{transform:scale(.96)}.send-btn svg{width:20px;height:20px}.chat-container{width:100%;max-width:600px;height:70vh;max-height:600px;display:flex;flex-direction:column;background:var(--bg-glass);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--border-light);border-radius:16px;overflow:hidden;animation:fadeIn .4s ease-out}.chat-header{display:flex;align-items:center;gap:14px;padding:20px 24px;border-bottom:1px solid var(--border-light)}.chat-avatar{width:46px;height:46px;border-radius:50%;overflow:hidden;flex-shrink:0;border:2px solid #22C55E}.chat-avatar img{width:100%;height:100%;object-fit:cover;filter:grayscale(100%)}.chat-title h2{font-family:Raleway,sans-serif;font-size:1.1rem;color:var(--white);font-weight:400;letter-spacing:.03em}.chat-title .status{font-size:.8rem;color:var(--gray-400)}.chat-messages{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:12px}.chat-messages::-webkit-scrollbar{width:4px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:var(--gray-600);border-radius:2px}.message{max-width:85%;padding:12px 16px;border-radius:12px;line-height:1.6;font-size:.95rem;animation:messageIn .25s ease-out}.message.user{align-self:flex-end;background:var(--white);color:var(--black)}.message.assistant{align-self:flex-start;background:var(--bg-glass-light);color:var(--white);border:1px solid var(--border-light)}.message.typing{display:flex;gap:5px;padding:16px 20px}.typing-dot{width:6px;height:6px;background:var(--gray-400);border-radius:50%;animation:typingBounce 1.4s ease-in-out infinite}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}.chat-form{padding:16px 20px 20px;border-top:1px solid var(--border-light)}.chat-input-wrapper{display:flex;align-items:center;background:#ffffff0f;border:1px solid var(--border-light);border-radius:10px;padding:4px;transition:var(--transition)}.chat-input-wrapper:focus-within{border-color:#ffffff40}.chat-input{flex:1;background:transparent;border:none;outline:none;font-size:.95rem;color:var(--white);padding:12px 14px}.chat-input::placeholder{color:var(--gray-500)}.chat-send-btn{width:40px;height:40px;border-radius:8px;border:none;background:var(--white);color:var(--black);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--transition);flex-shrink:0}.chat-send-btn:hover{background:var(--gray-200)}.chat-send-btn:active{transform:scale(.96)}.chat-send-btn svg{width:18px;height:18px}.hidden{display:none!important}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes messageIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes typingBounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}@media(max-width:768px){.header{padding:20px 24px}.nav{display:none}.menu-toggle{display:flex}.title{font-size:2.8rem}.subtitle{font-size:1rem}.initial-form{padding:0 10px}.chat-container{height:75vh;max-height:none;border-radius:14px}.message{max-width:90%}}@media(max-width:480px){.header{padding:16px 20px}.logo{font-size:1.3rem}.container{padding:80px 12px 12px}.title{font-size:2.2rem}.landing{gap:36px}.chat-container{border-radius:12px}.chat-header{padding:16px 18px}.chat-messages{padding:16px}.chat-form{padding:12px 14px 14px}.mobile-nav-link{font-size:1.6rem}}