:root{color-scheme:light dark;--bg:#f6f7fb;--panel:#ffffff;--text:#172033;--muted:#687085;--border:#dfe3ef;--primary:#315efb;--primary-contrast:#fff;--danger:#b42318;--success:#067647;--bubble:#eef2ff;--shadow:0 20px 60px rgba(17,24,39,.12)}
@media (prefers-color-scheme:dark){:root{--bg:#0d1117;--panel:#141a23;--text:#eef2ff;--muted:#9aa4b2;--border:#273244;--primary:#6d8cff;--primary-contrast:#08101f;--bubble:#202b42;--shadow:0 20px 70px rgba(0,0,0,.35)}}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary)}.shell{max-width:1180px;margin:0 auto;padding:28px}.hero{min-height:72vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.hero h1{font-size:clamp(42px,8vw,84px);margin:0}.hero p{font-size:20px;color:var(--muted)}.actions{display:flex;gap:12px;flex-wrap:wrap}.btn{border:0;border-radius:12px;background:var(--primary);color:var(--primary-contrast);padding:11px 16px;font-weight:700;text-decoration:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--border)}.card{background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:22px;box-shadow:var(--shadow);margin-bottom:18px}.card.narrow{max-width:430px;margin:8vh auto}.form{display:grid;gap:14px}.form label,.site-card label{display:grid;gap:7px;color:var(--muted);font-weight:650}input,textarea,select{width:100%;border:1px solid var(--border);background:transparent;color:var(--text);border-radius:12px;padding:11px;font:inherit}textarea{resize:vertical}code{background:var(--bubble);padding:2px 6px;border-radius:7px}.notice{padding:12px 14px;border-radius:12px;margin:12px 0}.notice.error{background:rgba(180,35,24,.12);color:var(--danger)}.notice.success{background:rgba(6,118,71,.13);color:var(--success)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.topbar h1{margin:0}.topbar p{margin:4px 0 0;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}.chat-admin{display:grid;grid-template-columns:340px 1fr;min-height:72vh;background:var(--panel);border:1px solid var(--border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}.conversation-list{border-right:1px solid var(--border);overflow:auto}.list-head{display:flex;align-items:center;justify-content:space-between;padding:14px;border-bottom:1px solid var(--border);gap:10px}.conv-item{padding:14px;border-bottom:1px solid var(--border);cursor:pointer}.conv-item:hover,.conv-item.active{background:var(--bubble)}.conv-title{font-weight:800}.conv-meta,.conv-last{color:var(--muted);font-size:13px;margin-top:4px}.conversation-panel,.user-chat{display:flex;flex-direction:column;min-height:72vh}.panel-title{padding:16px;border-bottom:1px solid var(--border);font-weight:800}.messages{flex:1;padding:18px;overflow:auto;display:flex;flex-direction:column;gap:10px}.msg{max-width:min(74%,720px);padding:10px 12px;border-radius:14px;background:var(--bubble);align-self:flex-start;white-space:pre-wrap;word-wrap:break-word}.msg.agent{align-self:flex-end;background:var(--primary);color:var(--primary-contrast)}.msg.system{align-self:center;max-width:90%;font-size:12px;color:var(--muted);background:transparent;border:1px dashed var(--border)}.msg.user{align-self:flex-start}.msg .time{display:block;font-size:11px;opacity:.7;margin-top:5px}.reply{display:flex;gap:10px;padding:14px;border-top:1px solid var(--border)}.reply input{flex:1}.user-chat{background:var(--panel);border:1px solid var(--border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}
@media(max-width:760px){.shell{padding:14px}.topbar{align-items:flex-start;flex-direction:column}.chat-admin{grid-template-columns:1fr}.conversation-list{max-height:34vh;border-right:0;border-bottom:1px solid var(--border)}.msg{max-width:92%}.reply{flex-wrap:wrap}.reply button{flex:1}.actions{width:100%}.actions .btn{flex:1}}


/* v1.1 UI hardening */
select{appearance:auto;background-color:var(--panel);color:var(--text);color-scheme:light;border-color:var(--border)}
select option,select optgroup{background-color:#ffffff;color:#172033}
@media (prefers-color-scheme:dark){select{background-color:var(--panel);color:var(--text);color-scheme:dark}select option,select optgroup{background-color:#141a23;color:#eef2ff}}
input:focus,textarea:focus,select:focus{outline:2px solid color-mix(in srgb,var(--primary) 55%,transparent);outline-offset:2px}
.panel-title{display:flex;align-items:center;justify-content:space-between;gap:12px}
.panel-heading{display:grid;gap:3px;min-width:0}
.panel-heading span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.panel-subtitle{font-size:12px;color:var(--muted);font-weight:650}
.panel-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.panel-actions select{min-width:120px;padding:8px 10px;border-radius:10px;font-size:13px}
.btn.small{padding:8px 10px;border-radius:10px;font-size:13px}
.empty-state{padding:18px;color:var(--muted);font-size:14px}
.badge{display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:999px;padding:2px 8px;font-size:12px;color:var(--muted);gap:4px}
.site-note{color:var(--muted);font-size:14px;line-height:1.5}
.site-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.danger-zone{margin-top:10px;padding-top:10px;border-top:1px dashed var(--border)}
.btn.danger{background:var(--danger);color:#fff}
@media(max-width:760px){.panel-title{align-items:flex-start;flex-direction:column}.panel-actions{width:100%}.panel-actions .btn,.panel-actions select{flex:1}.site-actions .btn{flex:1}}

/* v1.1.1 settings */
.settings-card h2{margin-top:0}
.check-row{display:flex!important;grid-template-columns:none!important;align-items:center;gap:10px;color:var(--text)!important;font-weight:750}
.check-row input[type=checkbox]{width:auto;min-width:18px;height:18px;accent-color:var(--primary)}

/* v1.2 request categories */
.two-col{display:grid;grid-template-columns:1fr 160px;gap:12px}
.category-card h2{margin:0}
.category-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}
.check-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px;margin-top:10px}
.check-row.mini{border:1px solid var(--border);border-radius:12px;padding:8px 10px;background:rgba(127,127,127,.04)}
.check-row.mini small{color:var(--muted);font-weight:650}
.chat-tools{padding:14px;border-bottom:1px solid var(--border);background:rgba(127,127,127,.04)}
.chat-tools label{display:grid;gap:7px;color:var(--muted);font-weight:800}
.chat-tools .site-note{margin:8px 0 0}
@media(max-width:760px){.two-col{grid-template-columns:1fr}.check-grid{grid-template-columns:1fr}}