@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");:root{--unt-blue:#0a2540;--unt-blue-medium:#163a61;--unt-blue-light:#4f8cff;--unt-gold:#c9a84c;--unt-gold-light:#f5e6b8;--unt-gradient:linear-gradient(135deg,var(--unt-blue-medium),var(--unt-blue));--unt-accent-gradient:linear-gradient(135deg,var(--unt-blue-light),var(--unt-gold));--bg-primary:#05070a;--bg-secondary:rgba(13,17,23,.8);--bg-tertiary:rgba(22,27,34,.5);--bg-elevated:#161b22;--bg-hover:rgba(48,54,61,.4);--text-primary:#f0f6fc;--text-secondary:#8b949e;--text-muted:#6e7681;--border-color:rgba(48,54,61,.8);--border-glow:rgba(79,140,255,.3);--glass-bg:rgba(13,17,23,.7);--glass-border:hsla(0,0%,100%,.08);--glass-blur:blur(12px) saturate(160%);--accent:#4f8cff;--accent-soft:rgba(79,140,255,.15);--success:#3fb950;--warning:#d29922;--error:#f85149;--shadow-sm:0 1px 2px rgba(0,0,0,.5);--shadow-md:0 8px 24px rgba(0,0,0,.6);--shadow-lg:0 16px 48px rgba(0,0,0,.8);--shadow-accent:0 0 20px rgba(79,140,255,.2);--sidebar-width:300px;--sidebar-collapsed:88px;--header-height:72px;--radius-sm:6px;--radius-md:12px;--radius-lg:20px;--transition-fast:150ms cubic-bezier(0.4,0,0.2,1);--transition-normal:300ms cubic-bezier(0.4,0,0.2,1)}*{margin:0;padding:0;box-sizing:border-box}body,html{height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--accent-hover)}button{font-family:inherit;cursor:pointer}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--accent-soft)}.app-layout{display:flex;height:100vh;overflow:hidden;background-color:var(--bg-primary);background-image:radial-gradient(at 0 0,rgba(79,140,255,.05) 0,transparent 50%),radial-gradient(at 100% 100%,rgba(201,168,76,.05) 0,transparent 50%)}.sidebar{width:var(--sidebar-width);background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border-right:1px solid var(--glass-border);display:flex;flex-direction:column;flex-shrink:0;transition:width var(--transition-normal),transform var(--transition-normal);z-index:50}.sidebar-header{height:var(--header-height);padding:0 24px;border-bottom:1px solid var(--glass-border);gap:16px}.sidebar-header,.sidebar-logo{display:flex;align-items:center}.sidebar-logo{width:42px;height:42px;background:var(--unt-accent-gradient);border-radius:12px;justify-content:center;font-weight:800;font-size:14px;color:#fff;box-shadow:var(--shadow-accent)}.sidebar-title{font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--text-primary)}.sidebar-subtitle{font-size:11px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-top:1px}.sidebar-nav{flex:1 1;padding:16px 12px;overflow-y:auto;display:flex;flex-direction:column;gap:4px}.sidebar-section-title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);padding:12px 12px 8px}.domain-btn{display:flex;align-items:center;gap:12px;width:100%;padding:12px 14px;border:1px solid transparent;border-radius:var(--radius-md);background:transparent;color:var(--text-secondary);font-size:14px;font-weight:500;text-align:left;transition:all var(--transition-fast)}.domain-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.domain-btn.active{background:var(--unt-blue-medium);border-color:var(--border-glow);color:#fff;box-shadow:var(--shadow-sm)}.domain-icon{width:10px;height:10px;border-radius:50%;flex-shrink:0;box-shadow:0 0 8px currentColor}.sidebar.collapsed{width:var(--sidebar-collapsed)}.sidebar.collapsed .sidebar-header{justify-content:center;padding:0}.domain-btn.icon-only{justify-content:center;padding:14px}.sidebar.collapsed .sidebar-section-title{display:none}.main-content{flex:1 1;display:flex;flex-direction:column;min-width:0;position:relative}.header{height:var(--header-height);padding:0 32px;border-bottom:1px solid var(--border-color);justify-content:space-between;background:var(--bg-secondary);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:40}.header,.header-left{display:flex;align-items:center}.header-left{gap:16px}.toggle-sidebar-btn{background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-secondary);font-size:18px;width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.toggle-sidebar-btn:hover{background:var(--bg-hover);border-color:var(--accent);color:var(--accent)}.header-title{font-size:17px;font-weight:600;letter-spacing:-.01em;color:var(--text-primary)}.chat-area{flex:1 1;overflow-y:auto;padding:0}.chat-area,.chat-messages{display:flex;flex-direction:column}.chat-messages{max-width:900px;width:100%;margin:0 auto;padding:32px 24px;gap:24px}.message{display:flex;flex-direction:column;gap:8px;max-width:85%;animation:messageIn .3s cubic-bezier(0,0,.2,1)}@keyframes messageIn{0%{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.message.user{align-self:flex-end}.message.assistant{align-self:flex-start}.message-header{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.message.user .message-header{flex-direction:row-reverse}.message-avatar{width:24px;height:24px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:11px}.message-avatar.user{background:var(--accent);color:#fff}.message-avatar.assistant{background:var(--unt-accent-gradient);color:#fff}.message-content{padding:16px 20px;font-size:14px;line-height:1.6;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);position:relative}.message.user .message-content{background:var(--unt-blue-medium);color:#fff;border-bottom-right-radius:4px;border:1px solid var(--border-glow)}.message.assistant .message-content{background:var(--bg-elevated);color:var(--text-primary);border-bottom-left-radius:4px;border:1px solid var(--border-color)}.domain-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:12px;font-size:10px;font-weight:600;background:hsla(0,0%,100%,.03);border:1px solid var(--border-color);color:var(--text-muted);width:-moz-fit-content;width:fit-content}.message.user .domain-badge{align-self:flex-end}.sources-list{margin-top:4px;padding:12px 16px;background:rgba(0,0,0,.2);border-radius:var(--radius-md);border:1px solid var(--border-color)}.sources-title{font-size:11px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.05em;cursor:pointer;list-style:none}.source-item{padding:12px 0;border-bottom:1px solid var(--border-color);display:flex;align-items:center}.source-similarity{flex-shrink:0;margin-left:auto;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.source-item:last-child{border-bottom:none}.citation-link{background:var(--unt-blue-medium);color:#fff!important;padding:0 6px;border-radius:4px;font-size:.85em;font-weight:600;text-decoration:none!important;display:inline-flex;align-items:center;margin:0 2px;border:1px solid var(--border-glow);transition:all var(--transition-fast)}.citation-link:hover{background:var(--accent);box-shadow:var(--shadow-accent);transform:translateY(-1px)}.input-area{padding:24px;background:linear-gradient(to top,var(--bg-primary) 60%,transparent)}.input-container{max-width:800px;margin:0 auto}.input-wrapper{background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:10px 16px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow-md);transition:all var(--transition-normal)}.input-wrapper:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(79,140,255,.1),var(--shadow-lg)}.input-wrapper textarea{flex:1 1;background:transparent;border:none;outline:none;color:var(--text-primary);font-size:15px;font-weight:400;resize:none;padding:8px 0;max-height:200px}.send-btn{width:40px;height:40px;border-radius:12px;background:var(--unt-accent-gradient);color:#fff;border:none;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);box-shadow:var(--shadow-sm)}.send-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-accent)}.welcome{max-width:800px;margin:auto;padding:40px 24px;text-align:center}.welcome-icon{width:88px;height:88px;background:var(--unt-accent-gradient);border-radius:24px;display:flex;align-items:center;justify-content:center;font-size:40px;margin:0 auto 32px;box-shadow:var(--shadow-lg),var(--shadow-accent)}.welcome h1{font-size:36px;font-weight:800;letter-spacing:-.02em;margin-bottom:12px;background:linear-gradient(135deg,var(--text-primary),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.welcome-suggestions{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:16px;gap:16px;margin-top:48px}.suggestion-card{padding:20px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);text-align:left;font-size:14px;line-height:1.5;color:var(--text-primary);transition:all var(--transition-normal);cursor:pointer}.suggestion-card:hover{background:var(--bg-hover);border-color:var(--accent);color:#fff;transform:translateY(-4px);box-shadow:var(--shadow-md)}.typing-indicator{display:flex;gap:5px;padding:4px}.typing-dot{width:6px;height:6px;background:var(--accent);border-radius:50%;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1.2)}}.input-footer{text-align:center;font-size:10px;color:var(--text-muted);opacity:.6;margin-top:16px;letter-spacing:.02em}@media (max-width:768px){.sidebar{display:none}.header{padding:0 16px}.message{max-width:95%}}