*{margin:0;padding:0;box-sizing:border-box}:root{--bg-color: #f8fafc;--bg-secondary: rgba(255, 255, 255, .8);--border-color: rgba(226, 232, 240, .8);--text-primary: #0f172a;--text-secondary: #64748b;--accent-color: #3b82f6;--accent-hover: #2563eb;--accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);--bot-msg-bg: #ffffff;--user-msg-bg: var(--accent-color);--app-height: 100dvh}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-primary);height:100dvh;margin:0;overflow:hidden;background-image:radial-gradient(circle at 15% 50%,rgba(59,130,246,.05) 0%,transparent 25%),radial-gradient(circle at 85% 30%,rgba(139,92,246,.05) 0%,transparent 25%)}.app{display:flex;justify-content:center;align-items:center;height:100dvh;padding:20px}.auth-container{display:flex;justify-content:center;align-items:center;height:100dvh;width:100%}.auth-card{background:var(--bg-secondary);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);padding:40px;border-radius:24px;box-shadow:0 20px 25px -5px #0000000d,0 10px 10px -5px #00000005;font-family:Outfit,sans-serif;font-size:1.25rem;color:var(--text-primary);text-align:center;animation:fadeIn .8s ease-out}.spinner{width:40px;height:40px;margin:0 auto 20px;border:3px solid rgba(0,0,0,.05);border-radius:50%;border-top-color:var(--accent-color);animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.chat-container{width:100%;max-width:900px;height:90vh;max-height:800px;background:var(--bg-secondary);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-color);border-radius:24px;box-shadow:0 25px 50px -12px #00000014;display:flex;flex-direction:column;overflow:hidden;animation:slideUp .6s cubic-bezier(.16,1,.3,1)}@keyframes slideUp{0%{opacity:0;transform:translateY(40px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.chat-header{padding:24px 32px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;gap:16px;background:#ffffff80}.chat-header .logo-icon{width:48px;height:48px;border-radius:14px;background:var(--accent-gradient);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px #3b82f633}.chat-header .logo-icon svg{width:24px;height:24px;color:#fff}.chat-header .title-group{display:flex;flex-direction:column}.chat-header h1{font-family:Outfit,sans-serif;font-size:1.5rem;font-weight:600;margin:0;letter-spacing:-.02em;color:var(--text-primary)}.chat-header p{font-size:.875rem;color:var(--text-secondary);margin:4px 0 0;font-weight:500;display:flex;align-items:center;gap:6px}.chat-header p:before{content:"";display:inline-block;width:8px;height:8px;background-color:#10b981;border-radius:50%;box-shadow:0 0 8px #10b9814d}.messages-container{flex:1;overflow-y:auto;padding:32px;display:flex;flex-direction:column;gap:24px;scroll-behavior:smooth;background:#ffffff4d}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb{background:#0000000d;border-radius:10px}.messages-container::-webkit-scrollbar-thumb:hover{background:#0000001a}.welcome-message{display:flex;flex-direction:column;justify-content:center;align-items:center;height:100%;color:var(--text-secondary);text-align:center;animation:fadeIn 1s ease-out}.welcome-message p{font-size:1.1rem}.welcome-icon{width:64px;height:64px;background:#fff;border-radius:50%;border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;margin-bottom:20px;box-shadow:0 4px 6px -1px #0000000d}.welcome-icon svg{width:32px;height:32px;color:var(--accent-color)}.message{display:flex;width:100%;animation:messageSlide .4s ease-out forwards;opacity:0}@keyframes messageSlide{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{justify-content:flex-end}.message.bot{justify-content:flex-start}.message-avatar{width:32px;height:32px;border-radius:8px;margin:0 12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;align-self:flex-end}.message.bot .message-avatar{background:var(--accent-gradient);order:-1;margin-right:12px;margin-left:0;box-shadow:0 2px 4px #3b82f633}.message.bot .message-avatar svg{width:18px;height:18px;color:#fff}.message.user .message-avatar{display:none}.message-content{max-width:75%;padding:14px 20px;border-radius:20px;font-size:1rem;line-height:1.6;letter-spacing:-.01em}.message.user .message-content{background:var(--accent-color);color:#fff;border-bottom-right-radius:4px;box-shadow:0 4px 12px #3b82f626}.message.bot .message-content{background:var(--bot-msg-bg);border:1px solid var(--border-color);color:var(--text-primary);border-bottom-left-radius:4px;box-shadow:0 2px 8px #00000005}.typing-indicator{display:flex;gap:6px;padding:16px 20px;background:var(--bot-msg-bg);border:1px solid var(--border-color);border-radius:20px 20px 20px 4px;width:fit-content}.typing-indicator span{width:8px;height:8px;background:#cbd5e1;border-radius:50%;animation:bounce 1.4s infinite ease-in-out both}.typing-indicator span:nth-child(1){animation-delay:-.32s}.typing-indicator span:nth-child(2){animation-delay:-.16s}.chat-input-container{display:flex;gap:12px;padding:20px 32px 32px;background:#fff;align-items:flex-end;border-top:1px solid var(--border-color)}.input-wrapper{flex:1;position:relative;display:flex;align-items:center;background:#f1f5f9;border:1px solid transparent;border-radius:24px;transition:all .3s cubic-bezier(.4,0,.2,1)}.input-wrapper:focus-within{background:#fff;border-color:var(--accent-color);box-shadow:0 0 0 4px #3b82f60f}.chat-input{flex:1;padding:16px 20px;background:transparent;border:none;color:var(--text-primary);font-family:inherit;font-size:1rem;resize:none;outline:none;height:54px}.chat-input::placeholder{color:#94a3b8}.send-button{width:44px;height:44px;margin:5px 6px;border-radius:50%;background:var(--accent-gradient);color:#fff;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s,box-shadow .2s,opacity .2s;flex-shrink:0}.send-button svg{width:20px;height:20px;transform:translate(1px)}.send-button:hover:not(:disabled){transform:scale(1.05);box-shadow:0 4px 12px #3b82f64d}.send-button:active:not(:disabled){transform:scale(.95)}.send-button:disabled{opacity:.5;cursor:not-allowed;background:#e2e8f0;color:#94a3b8}@media (max-width: 640px){body{height:100dvh}.app{height:100dvh;padding:0;align-items:flex-start}.chat-container{height:100dvh;border-radius:0;max-width:100%;border:none}.chat-header{padding:16px 20px;padding-top:max(16px,env(safe-area-inset-top))}.messages-container{padding:20px;padding-bottom:max(20px,env(safe-area-inset-bottom))}.chat-input-container{padding:16px 20px 24px;padding-bottom:max(24px,env(safe-area-inset-bottom))}}