:root{--ucla-blue: #2774AE;--ucla-blue-dark: #1e5f8f;--ucla-blue-darker: #003B5C;--ucla-gold: #FFD100;--ucla-gold-soft: #FFF0B3;--ucla-gold-dim: #C6A300;--bg-primary: #ffffff;--bg-secondary: #f5f7fa;--bg-sidebar: #003B5C;--bg-sidebar-hover: rgba(255,255,255,.08);--text-primary: #1a1a2e;--text-secondary: #5a6377;--text-light: #8b95a5;--border: #e2e6ed;--border-light: #eef1f5}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}body{background:var(--bg-primary);color:var(--text-primary)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#c4cad4;border-radius:3px}.sidebar{width:272px;background:var(--bg-sidebar);display:flex;flex-direction:column;height:100%}.sidebar-header{padding:16px 18px;border-bottom:1px solid rgba(255,255,255,.1)}.sidebar-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}.sidebar-brand img{width:36px;height:36px}.sidebar-brand-text{display:flex;flex-direction:column}.sidebar-brand-name{font-size:16px;font-weight:700;color:#fff;letter-spacing:-.2px}.sidebar-brand-sub{font-size:11px;color:var(--ucla-gold);font-weight:500;letter-spacing:.3px}.new-chat-btn{width:100%;padding:10px 16px;background:var(--ucla-gold);border:none;border-radius:8px;color:var(--bg-sidebar);font-size:14px;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:8px;transition:background .15s}.new-chat-btn:hover{background:#ffe04a}.sidebar-conversations{flex:1;overflow-y:auto;padding:8px}.conv-item{padding:10px 12px;border-radius:8px;font-size:13px;color:#fff9;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:background 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img{height:28px}.chat-topbar-title{font-size:14px;font-weight:600;color:var(--text-primary)}.chat-topbar-subtitle{font-size:11px;color:var(--text-light)}.chat-topbar-right{display:flex;align-items:center;gap:6px}.topbar-badge{padding:4px 10px;border-radius:6px;font-size:11px;font-weight:600;background:var(--ucla-gold-soft);color:var(--ucla-gold-dim)}.chat-messages{flex:1;overflow-y:auto;padding:24px 0;background:var(--bg-secondary)}.message-row{padding:12px 0}.message-row:nth-child(odd){background:transparent}.message-content{max-width:800px;margin:0 auto;padding:0 24px;display:flex;gap:14px}.avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;flex-shrink:0;overflow:hidden}.avatar-user{background:var(--ucla-blue);color:#fff}.avatar-agent{background:var(--ucla-gold-soft);border:2px solid var(--ucla-gold);padding:0}.avatar-agent img{width:100%;height:100%;object-fit:cover}.message-body{flex:1;min-width:0}.message-agent-label{font-size:12px;font-weight:700;color:var(--ucla-blue);margin-bottom:4px;text-transform:capitalize;display:flex;align-items:center;gap:6px}.agent-dot{width:6px;height:6px;border-radius:50%;background:var(--ucla-blue);display:inline-block}.message-text{font-size:15px;line-height:1.7;color:var(--text-primary);word-wrap:break-word}.message-text p{margin:0 0 12px}.message-text p:last-child{margin-bottom:0}.message-text h1,.message-text h2,.message-text h3,.message-text h4,.message-text h5,.message-text h6{margin:20px 0 8px;font-weight:600;color:var(--text-primary);line-height:1.3}.message-text h1{font-size:1.4em}.message-text h2{font-size:1.25em}.message-text h3{font-size:1.1em}.message-text strong{color:var(--text-primary);font-weight:600}.message-text em{color:var(--text-secondary)}.message-text code{background:#eef1f7;padding:2px 6px;border-radius:4px;font-size:.875em;font-family:SF 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bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.admin-layout{display:flex;height:100vh;background:var(--bg-secondary)}.admin-nav{width:220px;background:var(--bg-sidebar);display:flex;flex-direction:column}.admin-nav-header{padding:16px;font-size:15px;font-weight:600;color:#fff;border-bottom:1px solid rgba(255,255,255,.1);display:flex;align-items:center;gap:8px}.admin-nav-header a{color:#ffffff80;text-decoration:none;font-size:12px;font-weight:400;margin-left:auto}.admin-nav-header a:hover{color:#fff}.admin-tabs{padding:8px;display:flex;flex-direction:column;gap:2px}.admin-tab{padding:10px 12px;border:none;background:transparent;color:#fff9;font-size:13px;border-radius:8px;cursor:pointer;text-align:left;transition:all .15s}.admin-tab:hover{background:#ffffff0f;color:#ffffffd9}.admin-tab.active{background:#ffffff1f;color:#fff}.admin-main{flex:1;overflow-y:auto;padding:24px}.agent-list{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}.agent-card{padding:12px 16px;background:#fff;border-radius:10px;cursor:pointer;border:2px solid var(--border);transition:all .15s}.agent-card:hover{border-color:var(--ucla-blue)}.agent-card.active{border-color:var(--ucla-blue);background:#f0f5fb}.agent-card-title{font-size:14px;font-weight:600;color:var(--text-primary)}.agent-card-meta{font-size:11px;color:var(--text-light);margin-top:2px}.editor-section{margin-bottom:16px}.editor-label{font-size:12px;font-weight:600;color:var(--text-light);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;display:block}.editor-input{width:100%;padding:10px 14px;background:#fff;border:2px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:13px;font-family:SF Mono,Fira Code,Menlo,monospace;outline:none;transition:border-color .15s}.editor-input:focus{border-color:var(--ucla-blue)}.editor-textarea{width:100%;min-height:300px;padding:14px;background:#fff;border:2px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:13px;font-family:SF Mono,Fira Code,Menlo,monospace;line-height:1.6;resize:vertical;outline:none;transition:border-color .15s}.editor-textarea:focus{border-color:var(--ucla-blue)}.topic-chips{display:flex;flex-wrap:wrap;gap:6px}.topic-chip{padding:4px 10px;border-radius:6px;font-size:11px;cursor:pointer;border:1px solid var(--border);background:transparent;color:var(--text-secondary);transition:all .15s}.topic-chip.active{background:var(--ucla-blue);border-color:var(--ucla-blue);color:#fff}.topic-chip.restricted{opacity:.35}.save-btn{padding:10px 24px;background:var(--ucla-blue);border:none;border-radius:8px;color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background .15s}.save-btn:hover{background:var(--ucla-blue-dark)}.save-btn:disabled{opacity:.5;cursor:not-allowed}.conv-list-item{padding:12px 16px;background:#fff;border-radius:10px;margin-bottom:4px;cursor:pointer;border:2px solid var(--border);transition:all .15s}.conv-list-item:hover{border-color:var(--ucla-blue)}.conv-list-item.active{border-color:var(--ucla-blue);background:#f0f5fb}.conv-msg{padding:10px 14px;margin-bottom:4px;border-radius:8px;font-size:13px;line-height:1.6;white-space:pre-wrap}.conv-msg.user{background:#eef2f8;border-left:3px solid var(--ucla-blue);color:var(--text-primary)}.conv-msg.assistant{background:#fff;border-left:3px solid var(--ucla-gold);color:var(--text-primary)}.conv-msg.system{background:#fef9e7;border-left:3px solid var(--ucla-gold-dim);color:var(--text-primary)}.conv-msg-meta{font-size:11px;color:var(--text-light);margin-bottom:4px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:24px}.stat-card{background:#fff;border-radius:12px;padding:20px;text-align:center;border:1px solid var(--border)}.stat-value{font-size:32px;font-weight:700;color:var(--ucla-blue)}.stat-label{font-size:12px;color:var(--text-light);margin-top:4px}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#003b5c,#2774ae 60%,#4a9dd4);padding:24px}.auth-card{background:#fff;border-radius:16px;padding:40px 36px;width:100%;max-width:420px;text-align:center;box-shadow:0 8px 32px #00000026}.auth-bear{width:64px;height:64px;margin-bottom:8px}.auth-title{font-size:24px;font-weight:700;color:var(--ucla-blue-darker);margin-bottom:2px}.auth-subtitle{font-size:12px;font-weight:600;color:var(--ucla-blue);letter-spacing:.8px;text-transform:uppercase;margin-bottom:24px}.auth-form{text-align:left}.auth-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:4px;margin-top:12px}.auth-input{width:100%;padding:12px 14px;border:2px solid var(--border);border-radius:10px;font-size:15px;font-family:inherit;color:var(--text-primary);outline:none;transition:border-color .2s}.auth-input:focus{border-color:var(--ucla-blue);box-shadow:0 0 0 3px #2774ae1a}.auth-hint{font-size:12px;color:var(--text-light);margin-top:8px}.auth-error{background:#fff5f5;color:#c53030;padding:10px 14px;border-radius:8px;font-size:13px;margin-top:12px;border:1px solid #fed7d7}.auth-confirm{background:var(--bg-secondary);border:2px solid var(--border);border-radius:10px;padding:14px 16px;margin-top:12px;text-align:left}.auth-confirm p{margin:4px 0;font-size:14px;color:var(--text-primary)}.auth-btn{width:100%;padding:12px;margin-top:16px;background:var(--ucla-blue);color:#fff;border:none;border-radius:10px;font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;transition:background .15s}.auth-btn:hover{background:var(--ucla-blue-dark)}.auth-btn:disabled{opacity:.5;cursor:not-allowed}.auth-btn-secondary{width:100%;padding:10px;margin-top:8px;background:transparent;color:var(--text-secondary);border:2px solid var(--border);border-radius:10px;font-size:14px;font-weight:500;font-family:inherit;cursor:pointer;transition:all .15s}.auth-btn-secondary:hover{border-color:var(--ucla-blue);color:var(--ucla-blue)}.auth-link{margin-top:20px;font-size:13px;color:var(--text-light);text-align:center}.auth-link a{color:var(--ucla-blue);text-decoration:none;font-weight:600}.auth-link a:hover{text-decoration:underline}