:root{
  --bg:#f4f5f7;--surface:#fff;--surface2:#f0f2f5;--text:#16181d;--muted:#667085;--line:#e3e6eb;
  --accent:#2f6fed;--accent-ink:#fff;--ok:#12805c;--warn:#b25e09;--bad:#c4302b;
  --c1:#2f6fed;--c2:#12a37a;--c3:#d9822b;--c4:#8e5bd9;
  --radius:12px;--shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0f1115;--surface:#171a21;--surface2:#1e222b;--text:#e7e9ee;--muted:#98a2b3;--line:#2a2f3a;
  --accent:#5b8cff;--accent-ink:#0b0d12;--ok:#3ccf98;--warn:#f0a44b;--bad:#ff6b63;
  --c1:#5b8cff;--c2:#3ccf98;--c3:#f0a44b;--c4:#b18cff;--shadow:none;}}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
h1{font-size:22px;margin:4px 0 14px}h2{font-size:18px;margin:6px 0 12px}h3{font-size:15px;margin:0 0 10px}
code{background:var(--surface2);padding:1px 5px;border-radius:5px;font-size:12.5px}
pre{background:var(--surface2);border-radius:8px;padding:10px;overflow:auto;font-size:12px;max-height:60vh;white-space:pre-wrap;word-break:break-word;margin:0}
.hidden{display:none!important}.muted{color:var(--muted)}.small{font-size:12.5px}
.row{display:flex;gap:8px;align-items:center}.row.wrap{flex-wrap:wrap}.between{justify-content:space-between}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px;box-shadow:var(--shadow)}
.grid{display:grid;gap:14px}.grid.two{grid-template-columns:1fr 1fr}.grid.kpis{grid-template-columns:repeat(4,1fr);margin-bottom:14px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px}
.kpi .v{font-size:24px;font-weight:650;font-variant-numeric:tabular-nums}.kpi .l{color:var(--muted);font-size:12.5px}
input,select,textarea{font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:8px 10px;min-width:0}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}
label{display:block;margin:10px 0;color:var(--muted);font-size:13px}label input{display:block;width:100%;margin-top:4px}
label.inline{display:flex;align-items:center;gap:6px;margin:0}label.inline input{width:90px;margin:0}
button{font:inherit;cursor:pointer;border:1px solid var(--line);background:var(--surface2);color:var(--text);border-radius:8px;padding:8px 14px;white-space:nowrap}
button:hover{border-color:var(--accent)}button:disabled{opacity:.5;cursor:default}
button.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
button.ghost{background:transparent}button.small{padding:5px 10px;font-size:12.5px}
button.danger{color:var(--bad)}
.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:16px;background:var(--surface);border-bottom:1px solid var(--line);padding:8px 16px}
.brand{display:flex;align-items:center;gap:8px;font-size:15px;white-space:nowrap}.brand img{width:24px;height:24px}
nav{display:flex;gap:2px;overflow-x:auto;flex:1;scrollbar-width:none}nav::-webkit-scrollbar{display:none}
nav button{border:0;background:transparent;color:var(--muted);padding:8px 10px}
nav button.on{color:var(--text);background:var(--surface2);font-weight:600}
main{max-width:1180px;margin:0 auto;padding:18px 16px 60px}
table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);vertical-align:middle}
th{color:var(--muted);font-weight:500;font-size:12px}td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.table-wrap{overflow-x:auto}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:2px 8px;border-radius:99px;background:var(--surface2);white-space:nowrap}
.pill::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--muted)}
.pill.ok::before{background:var(--ok)}.pill.bad::before{background:var(--bad)}.pill.warn::before{background:var(--warn)}
.svc{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--line);flex-wrap:wrap}
.svc:last-child{border-bottom:0}.svc .name{flex:1;min-width:160px}.svc .actions{display:flex;gap:6px}
.bar{height:8px;background:var(--surface2);border-radius:99px;overflow:hidden;margin:4px 0 10px}.bar>i{display:block;height:100%;background:var(--accent)}
.meter{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.auth{min-height:100vh;display:grid;place-items:center;padding:16px}.auth-card{width:100%;max-width:420px}
.secret{font-family:ui-monospace,Consolas,monospace;font-size:16px;letter-spacing:1px;background:var(--surface2);padding:10px;border-radius:8px;word-break:break-all;user-select:all}
.msg{min-height:20px;color:var(--bad)}
.newkey{margin-top:12px;padding:12px;border:1px dashed var(--accent);border-radius:8px}
.newkey code{display:block;margin:6px 0;padding:8px;word-break:break-all;user-select:all;font-size:13px}
.chat{height:46vh;min-height:260px;overflow-y:auto;border:1px solid var(--line);border-radius:8px;padding:10px;margin:12px 0;background:var(--bg)}
.msgc{margin:8px 0;max-width:88%;padding:8px 12px;border-radius:10px;white-space:pre-wrap;word-break:break-word}
.msgc.user{margin-left:auto;background:var(--accent);color:var(--accent-ink)}
.msgc.assistant{background:var(--surface);border:1px solid var(--line)}
.msgc .think{color:var(--muted);font-size:12px;border-left:2px solid var(--line);padding-left:8px;margin-bottom:6px;max-height:120px;overflow:auto}
.msgc img{max-width:180px;display:block;border-radius:6px;margin-bottom:6px}
.compose textarea{flex:1;resize:vertical}.file-btn{margin:0;padding:8px 10px;border:1px solid var(--line);border-radius:8px;cursor:pointer;color:var(--text)}
.chart{height:200px;display:flex;align-items:flex-end;gap:4px;padding-top:10px}
.chart .col{flex:1;display:flex;flex-direction:column-reverse;min-width:6px;position:relative}
.chart .col span{display:block;width:100%}.chart .col:first-child span:last-child{border-radius:3px 3px 0 0}
.chart .x{font-size:10px;color:var(--muted);text-align:center;position:absolute;bottom:-18px;width:100%}
.legend{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px;font-size:12px;color:var(--muted)}.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:5px;vertical-align:-1px}
.logs{max-height:72vh;min-height:300px}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:var(--text);color:var(--bg);padding:10px 16px;border-radius:8px;z-index:20;max-width:90vw}
@media (max-width:820px){
  .grid.two{grid-template-columns:1fr}.grid.kpis{grid-template-columns:1fr 1fr}
  .top{flex-wrap:wrap;gap:8px}.top nav{order:3;flex-basis:100%}.top .brand{flex:1}
  main{padding:14px 12px 60px}h1{font-size:19px}
  .row.wrap>input,.row.wrap>select{flex:1 1 100%}
  .msgc{max-width:96%}
}
.file-btn input{display:none!important}
.compose{align-items:stretch}.compose textarea{min-width:0;width:100%}
@media (max-width:820px){.compose{flex-wrap:wrap}.compose textarea{flex:1 1 100%}.compose button{flex:1}}
/* Playground composer kieu ChatGPT */
#pg-new{display:inline-flex;align-items:center;gap:6px}
.composer{border:1px solid var(--line);border-radius:18px;background:var(--surface2);padding:8px 10px;margin-top:10px}
.composer:focus-within{border-color:var(--accent)}
.composer textarea{display:block;width:100%;box-sizing:border-box;border:0;background:transparent;resize:none;padding:6px 4px;max-height:40vh;outline:none}
.composer-bar{display:flex;align-items:center;gap:8px;margin-top:4px}
.composer-bar select{flex:0 1 auto;max-width:60%;border:0;background:transparent;color:var(--muted);padding:6px 8px;border-radius:999px;cursor:pointer}
.composer-bar select:hover{background:var(--surface);color:var(--text)}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;margin:0;border:1px solid var(--line);border-radius:999px;cursor:pointer;color:var(--text)}
.icon-btn:hover{background:var(--surface)}
.icon-btn input{display:none!important}
.send-btn{margin-left:auto;display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;border-radius:999px;background:var(--text);color:var(--bg);border-color:var(--text)}
.send-btn:disabled{opacity:.4;cursor:default}
.attach-chip{display:inline-flex;align-items:center;gap:6px;max-width:100%;margin:2px 0 4px;padding:4px 6px 4px 10px;border:1px solid var(--line);border-radius:10px;background:var(--surface);font-size:12.5px}
.attach-chip span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.attach-chip button{padding:0 6px;border:0;background:transparent;color:var(--muted);font-size:16px;line-height:1}

/* dang ky / dang nhap nguoi dung */
.seg{display:flex;gap:4px;background:var(--surface2);padding:4px;border-radius:10px;margin-bottom:12px}
.seg button{flex:1;border:0;background:transparent;padding:7px}.seg button.on{background:var(--surface);font-weight:600}
.or{text-align:center;color:var(--muted);margin:10px 0;font-size:12.5px}
#g-btn{display:flex;justify-content:center;min-height:44px}
#admin-link{color:var(--muted)}
.pill.warn{background:var(--warn);color:#000}

#g-btn{max-width:100%;overflow:hidden}#g-btn svg{max-width:24px;max-height:24px}


/* ---- Chuyen PDF -> Word (tab convert) ---- */
.dropzone{border:2px dashed var(--line);border-radius:12px;padding:26px 16px;text-align:center;color:var(--muted);cursor:pointer;user-select:none;font-size:14px}
.dropzone:hover,.dropzone.drag{border-color:var(--accent);color:var(--text)}
.dropzone.has{border-style:solid;border-color:var(--accent)}
.dropzone .cv-clear{margin-left:8px;padding:2px 10px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--muted);cursor:pointer}