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var(--gpe-blue);outline-offset:2px;opacity:1}.conv-menu-dropdown{position:absolute;right:0;top:calc(100% + 4px);background:#242830;border-radius:8px;box-shadow:var(--shadow-md);padding:4px;min-width:140px;z-index:50;animation:menuFadeIn .1s ease}@keyframes menuFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.conv-menu-item{display:block;width:100%;padding:6px 12px;background:transparent;border:none;border-radius:6px;color:#ffffffd9;font-size:13px;font-family:var(--font-sans);text-align:left;cursor:pointer;transition:background-color .1s}.conv-menu-item:hover{background:#ffffff0f}.conv-menu-item:focus-visible{outline:2px solid var(--gpe-blue);outline-offset:-2px}.conv-item-wrap:hover{background:#ffffff0f}.conv-item-wrap.active{background:#ffffff14}.conversation-item{display:flex;align-items:center;width:100%;padding:7px 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toastSlideUp{0%{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%)}}.chat-header{position:sticky;top:0;z-index:10;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;height:52px;padding:0 20px;background:var(--white, #ffffff);border-bottom:1px solid var(--border)}.chat-header-left{display:flex;align-items:center;gap:4px}.chat-header-center{display:flex;align-items:center;gap:8px;justify-content:center}.chat-header-right{display:flex;align-items:center;justify-content:flex-end}.header-new-chat-btn{width:32px;height:32px;border-radius:6px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .12s,color .12s}.header-new-chat-btn:hover{background:var(--bg);color:var(--text)}.header-new-chat-btn:focus-visible{outline:2px solid var(--gpe-blue, #3B82F6);outline-offset:2px}.mode-tab{display:inline-flex;align-items:center;gap:6px;padding:7px 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#9ca3af)}.quick-reply-chip:focus-visible{outline:2px solid var(--gpe-blue, #3B82F6);outline-offset:2px}@media(max-width:600px){.chat-header{height:auto;padding:8px 12px;gap:8px}.chat-header-center{order:3;grid-column:1 / -1;justify-content:flex-start;padding-top:4px}.role-select-label,.mode-tab span{display:none}.trainer-disclaimer{padding:6px 12px;font-size:11.5px}.quick-replies{padding-left:12px}}.fab-scroll-top{position:absolute;bottom:calc(100% + 12px);left:50%;transform:translate(-50%);z-index:10;width:32px;height:32px;border-radius:50%;border:1px solid var(--border);background:var(--white);color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #00000014;transition:background-color .15s,border-color .15s,color .15s,box-shadow .15s;animation:fabFadeIn .2s ease}.fab-scroll-top:hover{border-color:var(--text-muted);color:var(--text);background:var(--bg);box-shadow:0 4px 12px #0000001f}@keyframes fabFadeIn{0%{opacity:0;transform:translate(-50%,4px)}to{opacity:1;transform:translate(-50%)}}.welcome-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 24px 80px;gap:6px;animation:fadeIn .4s ease}.welcome-greeting{font-size:28px;font-weight:600;color:var(--text);letter-spacing:-.3px}.welcome-subtitle{font-size:16px;color:var(--text-muted);font-weight:400}.suggestions-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;max-width:580px;width:100%;margin-top:22px}.suggestion-chip{display:flex;align-items:flex-start;gap:10px;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--white);cursor:pointer;text-align:left;font-size:13px;line-height:1.5;color:var(--text-secondary);font-family:var(--font-sans);transition:all .15s}.suggestion-chip:hover{border-color:var(--border);background:var(--bg);color:var(--text)}.suggestion-icon{flex-shrink:0;margin-top:2px;opacity:.4}.suggestion-chip:hover .suggestion-icon{opacity:.7}@media(max-width:600px){.suggestions-grid{grid-template-columns:1fr}}.chat-area{flex:1;overflow-y:auto;display:flex;flex-direction:column}.messages-container{max-width:720px;width:100%;margin:0 auto;padding:32px 24px 24px;display:flex;flex-direction:column;gap:32px}.msg{display:flex;gap:14px;animation:fadeIn .25s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.msg-user{flex-direction:row-reverse}.msg-avatar{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}.avatar-bot{width:28px;height:28px;border-radius:50%;background:var(--gpe-blue);display:flex;align-items:center;justify-content:center}.avatar-bot-logo{width:28px;height:28px;display:block}.msg-user .msg-avatar{background:#e8e8ed;color:var(--text);overflow:hidden}.msg-avatar-img{width:100%;height:100%;object-fit:cover;border-radius:50%}.avatar-initials{font-size:11px;font-weight:600;display:flex;align-items:center;justify-content:center;width:100%;height:100%}.msg-content{flex:1;min-width:0;max-width:100%}.msg-user .msg-content{display:flex;justify-content:flex-end}.msg-body{font-size:14.5px;line-height:1.7;position:relative;color:var(--text)}.msg-body p{margin-bottom:10px}.msg-body p:last-child{margin-bottom:0}.msg-body h1,.msg-body h2,.msg-body h3,.msg-body h4{font-weight:600;margin:20px 0 8px;line-height:1.35;text-transform:none;letter-spacing:-.1px;color:var(--text)}.msg-body h1{font-size:18px}.msg-body h2{font-size:16px}.msg-body h3{font-size:14.5px;color:var(--text-secondary)}.msg-body h4{font-size:13.5px;color:var(--text-secondary)}.msg-body h1:first-child,.msg-body h2:first-child,.msg-body h3:first-child,.msg-body h4:first-child{margin-top:0}.msg-body 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transparent;background:transparent;color:var(--text-hint);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .15s}.msg-body:hover .copy-btn{opacity:1}.copy-btn:hover{border-color:var(--gpe-blue);color:var(--gpe-blue);background:var(--gpe-blue-light)}.typing-cursor{display:inline-block;width:2px;height:14px;background:var(--gpe-blue);margin-left:2px;vertical-align:text-bottom;animation:blink .8s infinite}@keyframes blink{0%,50%{opacity:1}51%,to{opacity:0}}.msg-meta{font-size:10px;color:var(--text-hint);margin-top:10px;letter-spacing:.2px}.msg-feedback{display:flex;align-items:center;gap:6px;margin-top:10px;flex-wrap:wrap}.fb-label{font-size:12px;color:var(--text-hint);margin-right:2px}.fb-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;padding:0;border:1px solid var(--border-subtle, rgba(0,0,0,.08));background:transparent;color:var(--text-hint);border-radius:8px;cursor:pointer;transition:background 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var(--text-muted);outline-offset:2px;border-radius:4px}.login-footer{text-align:center;margin-top:18px;font-size:11px;color:var(--text-hint)}:root{--gpe-blue: #307FE2;--gpe-blue-light: #E8F1FC;--gpe-blue-dark: #1E5BB0;--gpe-blue-10: rgba(48, 127, 226, .1);--gpe-blue-15: rgba(48, 127, 226, .15);--gpe-blue-20: rgba(48, 127, 226, .2);--gpe-mint: #44B59D;--gpe-mint-light: #E8F6F2;--sidebar-bg: #1A1D23;--surface-dark: #1E2128;--sidebar-hover: rgba(255, 255, 255, .06);--sidebar-active: rgba(48, 127, 226, .15);--sidebar-text: rgba(255, 255, 255, .75);--sidebar-text-hover: rgba(255, 255, 255, .9);--sidebar-border: rgba(255, 255, 255, .08);--bg: #F8FAFC;--white: #FFFFFF;--text: #111827;--text-secondary: #4B5563;--text-muted: #6B7280;--text-hint: #9CA3AF;--border: #E5E7EB;--border-light: #F3F4F6;--success: #059669;--success-bg: #D1FAE5;--warning: #D97706;--warning-bg: #FEF3C7;--error: #DC2626;--error-bg: #FEE2E2;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--shadow-sm: 0 1px 3px 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