@import"https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Thai:wght@300;400;500;600;700&family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Mono:wght@400;500&display=swap";:root{--red: #C8102E;--red-2: #a80d27;--red-soft: rgba(200,16,46,.08);--blue: #0B2D6B;--blue-2: #0e3a86;--blue-soft: rgba(11,45,107,.07);--bg: #F8F7F5;--surface: #FFFFFF;--surface-2: #F2F0ED;--surface-3: #ECEAE6;--ink: #18160F;--ink-2: #47433B;--ink-3: #8A8278;--line: rgba(0,0,0,.09);--line-2: rgba(0,0,0,.14);--f-sans: "IBM Plex Sans Thai", "IBM Plex Sans", system-ui, sans-serif;--f-mono: "IBM Plex Mono", ui-monospace, monospace;--r: 6px;--r-lg: 14px;--t: .15s ease;--nav-h: 62px;--wrap-w: 1260px}[data-dark="1"]{--bg: #100F0C;--surface: #1A1916;--surface-2: #232119;--surface-3: #2C2A22;--ink: #EEE9DF;--ink-2: #B0A898;--ink-3: #6A6358;--line: rgba(255,255,255,.09);--line-2: rgba(255,255,255,.15);--blue-soft: rgba(11,45,107,.2);--red-soft: 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.12s}.chat-session-item:hover{background:var(--surface-2)}.chat-session-item.active{background:var(--blue-soft)}.chat-session-avatar{width:36px;height:36px;border-radius:50%;background:var(--surface-3);display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0;position:relative}.chat-session-online{position:absolute;bottom:0;right:0;width:10px;height:10px;border-radius:50%;background:#4ade80;border:2px solid var(--surface)}.chat-session-body{flex:1;min-width:0}.chat-session-name{font-weight:500;font-size:13.5px;display:flex;align-items:center;gap:6px}.chat-session-preview{font-size:12px;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.chat-session-meta{display:flex;align-items:center;justify-content:space-between;margin-top:3px}.chat-session-time{font-size:11px;color:var(--ink-3);font-family:var(--f-mono)}.chat-unread-badge{min-width:18px;height:18px;border-radius:9px;background:var(--red);color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 5px}.chat-status-closed{font-size:10.5px;color:var(--ink-3);background:var(--surface-3);border-radius:4px;padding:1px 6px}.chat-thread-panel{display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}.chat-thread-header{padding:14px 20px;border-bottom:1px solid var(--line);background:var(--surface);display:flex;align-items:center;gap:12px;flex-shrink:0}.chat-thread-header h4{flex:1;font-size:15px;font-weight:600}.chat-thread-messages{flex:1;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:8px}.chat-empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--ink-3);gap:12px}.chat-empty-state svg{opacity:.35}.chat-thread-input{display:flex;gap:10px;padding:12px 20px;border-top:1px solid var(--line);background:var(--surface);flex-shrink:0}.chat-thread-input textarea{flex:1;min-height:40px;max-height:100px;resize:none;border-radius:var(--r);font-size:13.5px;padding:10px 13px}.chat-thread-send{background:var(--blue);color:#fff;border:none;border-radius:var(--r);padding:0 18px;font-size:13px;font-weight:600;cursor:pointer;transition:background .15s;white-space:nowrap}.chat-thread-send:hover{background:var(--blue-2)}.chat-thread-send:disabled{opacity:.4;cursor:default}@media (max-width: 900px){.chat-window{width:calc(100vw - 24px);right:12px}.admin-chat{grid-template-columns:1fr}.chat-sessions-panel{height:220px;border-right:none;border-bottom:1px solid var(--line)}}.settings-section{border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:20px}.settings-section-title{padding:10px 16px;font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-3);background:var(--surface-2);border-bottom:1px solid var(--line)}.settings-row{display:flex;align-items:center;gap:16px;padding:16px;background:var(--surface)}.settings-row+.settings-row{border-top:1px solid var(--line)}.settings-row-info{flex:1}.settings-row-label{font-size:14px;font-weight:500;margin-bottom:3px}.settings-row-desc{font-size:12px;color:var(--ink-3);line-height:1.5}.settings-toggle{flex-shrink:0;position:relative;width:44px;height:24px;border-radius:12px;border:none;background:var(--line);cursor:pointer;transition:background 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