:root{
  --bg:#ffffff;--surface:#ffffff;--sidebar:#f7f7f8;--panel:#ffffff;--panel2:#f4f4f5;--text:#0d0d0d;--muted:#6b7280;--line:#e5e5e5;--line2:#d9d9de;--accent:#10a37f;--accent2:#0d8f6f;--bubble:#f7f7f8;--user:#f4f4f5;--shadow:0 8px 30px rgba(0,0,0,.06);--radius:18px;
}
*{box-sizing:border-box}html,body{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans Thai",Arial,sans-serif}.app{height:100vh;display:grid;grid-template-columns:300px minmax(520px,1fr) 470px;background:var(--bg)}.sidebar{background:var(--sidebar);border-right:1px solid var(--line);padding:12px;overflow:auto}.inspector{background:var(--surface);border-left:1px solid var(--line);padding:14px;overflow:auto}.brand{display:flex;gap:10px;align-items:center;padding:8px 6px 14px}.brand b{font-size:15px}.brand span{display:block;color:var(--muted);font-size:12px}.logo{width:32px;height:32px;border-radius:9px;background:#111;color:#fff;display:grid;place-items:center;font-weight:700}.new-chat,.composer button,.topbar button,.toolbar-btn{background:var(--surface);color:var(--text);border:1px solid var(--line2);border-radius:12px;padding:10px 12px;cursor:pointer;font-weight:500;transition:.15s}.new-chat:hover,.topbar button:hover,.toolbar-btn:hover{background:#f0f0f0}.new-chat{width:100%;text-align:left;margin-bottom:6px}.new-chat.secondary{background:transparent;border-color:transparent}.new-chat.secondary:hover{background:#ececf1}.section-title{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:18px 8px 8px}.doc-item{padding:10px;border-radius:12px;cursor:pointer;border:1px solid transparent;line-height:1.35}.doc-item:hover,.doc-item.active{background:#ececf1}.doc-item small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.select{width:100%;background:var(--surface);color:var(--text);border:1px solid var(--line2);border-radius:12px;padding:10px}.upload-box{margin-top:14px;border:1px dashed #c7c7c7;border-radius:14px;padding:14px;display:block;cursor:pointer;background:#fff}.upload-box:hover{background:#fafafa}.upload-box small{display:block;color:var(--muted);margin-top:4px}.status,.muted{color:var(--muted);font-size:13px;margin-top:8px}.main{display:grid;grid-template-rows:56px 1fr auto;min-width:0;background:#fff}.topbar{height:56px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 18px;background:rgba(255,255,255,.92);backdrop-filter:blur(10px)}.topbar span{display:block;color:var(--muted);font-size:12px}.topbar-actions{display:flex;gap:8px;align-items:center}.messages{overflow:auto;padding:28px 8%;display:flex;flex-direction:column;gap:20px}.welcome{text-align:center;margin:auto;max-width:720px;color:var(--muted)}.welcome h1{color:var(--text);font-size:34px;font-weight:600;margin-bottom:8px}.msg{display:flex;gap:14px;max-width:900px;width:100%;margin:0 auto}.avatar{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:#f1f1f1;color:#555;flex:0 0 32px;font-weight:600}.msg.user{justify-content:flex-end}.msg.user .avatar{display:none}.bubble{background:transparent;padding:4px 0;line-height:1.68;white-space:pre-wrap;color:#1f2937}.msg.user .bubble{background:var(--user);padding:12px 16px;border-radius:18px;max-width:78%;color:#111}.composer{display:flex;gap:10px;padding:16px 8% 22px;border-top:1px solid transparent}.composer textarea{flex:1;resize:none;max-height:160px;background:#fff;color:var(--text);border:1px solid var(--line2);box-shadow:var(--shadow);border-radius:18px;padding:14px 16px;font:inherit;outline:none}.composer textarea:focus{border-color:#b7b7bd}.composer button{background:#111;color:#fff;border-color:#111;border-radius:50%;width:46px;height:46px;padding:0}.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:14px;margin-bottom:14px;box-shadow:0 1px 1px rgba(0,0,0,.02)}.panel-title{font-weight:650;margin-bottom:10px;display:flex;align-items:center;justify-content:space-between}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:10px}.metric{background:var(--panel2);padding:12px;border-radius:14px}.metric b{font-size:22px;display:block}.metric span{font-size:12px;color:var(--muted)}pre{white-space:pre-wrap;color:#111;background:#f7f7f8;padding:10px;border-radius:12px;max-height:230px;overflow:auto;border:1px solid var(--line);font-size:12px}.evidence{border-top:1px solid var(--line);padding:10px 0}.evidence small{color:var(--muted)}.score{color:var(--accent2)}.category-item{padding:9px 10px;border-radius:12px;border:1px solid var(--line);background:#fff;margin-bottom:8px;cursor:pointer}.category-item:hover{background:#f2f2f4}.category-item b{display:block;font-size:13px}.category-item small{color:var(--muted)}.tag{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:3px 7px;margin:3px 4px 3px 0;color:#444;background:#f7f7f8;font-size:12px}.class-row{margin-bottom:8px}.class-row b{display:block;color:#111}.class-row small{color:var(--muted)}.case-views-box{font-size:12px;color:var(--text);max-height:520px;overflow:auto}.mini-section{border-top:1px solid var(--line);padding:10px 0}.mini-section:first-child{border-top:0}.mini-section ol{padding-left:18px;margin:8px 0}.mini-section li{margin:6px 0;color:#444}.mini-table{width:100%;border-collapse:collapse;font-size:11px}.mini-table th,.mini-table td{border-bottom:1px solid var(--line);padding:6px;text-align:left;vertical-align:top}.mini-table th{color:var(--muted);font-weight:600}
.graph-shell{height:430px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,#fff,#fafafa);position:relative;overflow:hidden}.graph-toolbar{display:grid;grid-template-columns:1fr 70px;gap:8px;margin-bottom:10px}.graph-toolbar input,.graph-toolbar select{border:1px solid var(--line2);border-radius:10px;padding:9px;background:#fff}.graph-controls{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}.graph-controls button,.export-row button{border:1px solid var(--line2);background:#fff;border-radius:10px;padding:7px 9px;cursor:pointer;font-size:12px}.graph-controls button:hover,.export-row button:hover{background:#f1f1f1}.graph-svg{width:100%;height:100%;cursor:grab}.graph-svg:active{cursor:grabbing}.node circle{stroke:#fff;stroke-width:2;filter:drop-shadow(0 1px 2px rgba(0,0,0,.18))}.node text{font-size:11px;fill:#111;paint-order:stroke;stroke:#fff;stroke-width:3px;stroke-linejoin:round}.edge{stroke:#c8c8d0;stroke-width:1.5;opacity:.8}.edge-label{font-size:9px;fill:#777}.node.selected circle{stroke:#111;stroke-width:3}.node-detail{font-size:12px;background:#f7f7f8;border:1px solid var(--line);border-radius:12px;padding:10px;margin-top:10px;max-height:160px;overflow:auto}.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.stat-card{background:#f7f7f8;border:1px solid var(--line);border-radius:12px;padding:10px}.stat-card b{display:block;font-size:18px}.stat-card span{color:var(--muted);font-size:11px}.term-list{max-height:220px;overflow:auto}.term-row{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:5px 0;font-size:12px}.export-row{display:flex;gap:7px;flex-wrap:wrap}.payload-select{width:100%;border:1px solid var(--line2);border-radius:12px;padding:9px;background:#fff;margin-bottom:8px}.pill-row{display:flex;gap:6px;flex-wrap:wrap}.pill{border:1px solid var(--line);border-radius:999px;padding:4px 8px;background:#fafafa;font-size:12px;color:#444}@media(max-width:1180px){.app{grid-template-columns:280px 1fr}.inspector{display:none}}@media(max-width:760px){.app{grid-template-columns:1fr}.sidebar{display:none}.messages,.composer{padding-left:16px;padding-right:16px}}