/* Cổng AI Hồ Gươm - CSS dùng chung (người dùng + quản trị). Mobile-first responsive. */
:root{
  --bg:#ffffff; --surface:#ffffff; --surface-2:#f6f3f3; --fg:#1f1919; --muted:#52474a; --line:#e6dfdf;
  --accent:#ce2028; --accent-fg:#fff; --accent-soft:#fbe7e8;
  --good:#2c7a3a; --good-soft:#e3f2e5; --warn:#a8660f; --warn-soft:#fbefd9; --bad:#9a1219; --bad-soft:#fbe3e0;
  --gem:#3a6bd4; --cla:#c0623a; --srch:#6f8179;
  --f-display:"Lexend","Be Vietnam Pro","Noto Sans KR","Malgun Gothic",system-ui,sans-serif;
  --f-body:"Be Vietnam Pro","Noto Sans KR","Malgun Gothic","Apple SD Gothic Neo",system-ui,"Segoe UI",sans-serif;
  --fs-base:16px; --fs-sm:.95rem; --fs-xs:.85rem; --fs-chat:1.1rem;
  --f-mono:"Roboto Mono",ui-monospace,Consolas,monospace;
  --shadow:0 8px 30px rgb(0 0 0/.14);
  --tap:44px;
}
:root[data-theme="dark"]{
  --bg:#141111; --surface:#1d1919; --surface-2:#272121; --fg:#f1ebeb; --muted:#c4b8b8; --line:#3a3131;
  --accent:#ef4a52; --accent-fg:#fff; --accent-soft:#3a1a1c;
  --good:#6fcf82; --good-soft:#1c2e20; --warn:#e8a94d; --warn-soft:#352915; --bad:#ff7d7d; --bad-soft:#3a1c1b;
  --gem:#7da4f5; --cla:#e48a62; --srch:#9db3aa; --shadow:0 8px 30px rgb(0 0 0/.5);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;font-size:100%}
html.font-lg{--tap:50px}
body{margin:0;background:var(--bg);color:var(--fg);font:var(--fs-base)/1.6 var(--f-body)}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:600;text-wrap:balance;margin:0}
h1{font-size:1.6rem} h2{font-size:1.3rem} h3{font-size:1.1rem} h4{font-size:1rem}
p{margin:0} a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline}
.muted{color:var(--muted)} .sm{font-size:var(--fs-sm)} .xs{font-size:var(--fs-xs)} .num{font-variant-numeric:tabular-nums} .mono{font-family:var(--f-mono)}
.label{font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.grid{display:grid;gap:12px} .gap-sm{gap:6px} .row{display:flex;gap:8px;flex-wrap:wrap;align-items:center} .spread{justify-content:space-between}
.grow{flex:1;min-width:0} .right{margin-left:auto} .r{text-align:right}
.cols-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:16px}
.cols-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,250px),1fr));gap:12px}

/* ---------- Form ---------- */
input,select,textarea{font:inherit;color:var(--fg);background:var(--bg);border:1px solid #9a8f8f;border-radius:8px;padding:10px 12px;min-width:0;max-width:100%}
input:not([type=checkbox]):not([type=radio]),select{min-height:var(--tap)}
select{padding:8px 10px;font-size:var(--fs-sm)}
textarea{resize:vertical;min-height:80px;width:100%}
.field{display:grid;gap:4px;font-size:var(--fs-sm);color:var(--muted)}
.field input,.field select,.field textarea{width:100%}
.field .hint{font-size:var(--fs-xs)}
.search{width:260px;max-width:100%}
input[type=checkbox],input[type=radio]{width:22px;height:22px;padding:0;accent-color:var(--accent)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:var(--fs-sm);color:var(--fg);min-height:var(--tap);align-items:center}
.switch{position:relative;width:42px;height:24px;flex:none;display:inline-block}
.switch input{position:absolute;inset:0;opacity:0;width:100%;height:100%;margin:0;cursor:pointer}
.switch i{position:absolute;inset:0;background:var(--line);border-radius:99px;transition:background .15s}
.switch i::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .15s}
.switch input:checked+i{background:var(--good)}
.switch input:checked+i::after{transform:translateX(18px)}
.switch input:focus-visible+i{outline:2px solid var(--accent);outline-offset:2px}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:12px}
.setting{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.setting:last-child{border-bottom:0}
.setting small{display:block;color:var(--muted);font-size:var(--fs-xs)}

/* ---------- Buttons / tags ---------- */
.btn{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:4px 14px;font-size:var(--fs-sm);min-height:var(--tap);display:inline-flex;align-items:center;justify-content:center;gap:6px;text-decoration:none;color:var(--fg)}
.btn:hover{background:var(--surface-2);text-decoration:none}
.btn.pri{background:var(--accent);border-color:var(--accent);color:var(--accent-fg);font-weight:600}
.btn.pri:hover{filter:brightness(1.08);background:var(--accent)}
.btn.danger{border-color:var(--bad);color:var(--bad)}
.btn.sm{min-height:44px;padding:4px 12px;font-size:var(--fs-sm)}
.btn.wide{width:100%;min-height:48px}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.icon-btn{border:0;background:transparent;width:var(--tap);height:var(--tap);border-radius:8px;display:inline-grid;place-items:center;font-size:1.2rem;flex:none}
.icon-btn:hover{background:var(--surface-2)}
.tag{display:inline-block;font-size:.82rem;padding:2px 10px;border-radius:99px;background:var(--good-soft);color:var(--good);font-weight:600;white-space:nowrap}
.tag.gem{background:color-mix(in srgb,var(--gem) 15%,transparent);color:var(--gem)}
.tag.cla{background:color-mix(in srgb,var(--cla) 15%,transparent);color:var(--cla)}
.tag.warn{background:var(--warn-soft);color:var(--warn)}
.tag.bad{background:var(--bad-soft);color:var(--bad)}
.tag.off{background:var(--surface-2);color:var(--muted)}
.tag.acc{background:var(--accent-soft);color:var(--accent)}
.chip{border:1px solid #9a8f8f;background:var(--surface);border-radius:99px;padding:6px 14px;font-size:var(--fs-sm);min-height:44px;display:inline-flex;align-items:center}
.chip[aria-pressed="true"]{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-weight:600;font-size:.78rem;flex:none}
.avatar.lg{width:56px;height:56px;font-size:1.1rem}

/* ---------- Panels / KPI ---------- */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;display:grid;gap:10px;min-width:0;align-content:start}
.panel>form{display:grid;gap:12px;min-width:0}
.panel-head{display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:space-between;align-items:center}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,170px),1fr));gap:12px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;display:grid;gap:4px}
.kpi .v{font-family:var(--f-display);font-size:1.5rem;font-weight:600;font-variant-numeric:tabular-nums}
.kpi .s{font-size:var(--fs-xs);color:var(--muted)}
.meter{height:10px;border-radius:99px;background:var(--surface-2);overflow:hidden}
.meter i{display:block;height:100%;background:var(--accent);border-radius:99px}
.meter.warn i{background:var(--warn)} .meter.bad i{background:var(--bad)} .meter.good i{background:var(--good)}
.mini-meter{display:flex;align-items:center;gap:8px;min-width:130px}.mini-meter .meter{flex:1}
.legend{display:flex;flex-wrap:wrap;gap:12px;font-size:.8rem;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:5px}
.chart{overflow-x:auto}.chart svg{display:block;width:100%;min-width:520px;height:auto;max-height:200px}
.note{font-size:var(--fs-sm);color:var(--warn);background:var(--warn-soft);padding:10px 14px;border-radius:8px}
.info{font-size:var(--fs-sm);color:var(--fg);background:var(--surface-2);padding:8px 12px;border-radius:8px}
.empty{text-align:center;color:var(--muted);padding:32px 12px;border:1px dashed var(--line);border-radius:10px;display:grid;gap:6px;justify-items:center}
.skeleton{background:linear-gradient(90deg,var(--surface-2),var(--line),var(--surface-2));background-size:200% 100%;animation:sk 1.2s infinite;border-radius:6px;height:14px}
@keyframes sk{to{background-position:-200% 0}}
.tabs{display:flex;gap:4px;background:var(--surface-2);padding:4px;border-radius:10px;overflow-x:auto;scrollbar-width:none}
.tabs button,.tabs a{display:inline-flex;align-items:center;text-decoration:none;cursor:pointer;border:0;background:transparent;padding:7px 14px;border-radius:7px;font-weight:500;color:var(--muted);white-space:nowrap;min-height:34px}
.tabs button[aria-selected="true"],.tabs a[aria-selected="true"]{background:var(--surface);color:var(--fg);box-shadow:0 1px 2px rgb(0 0 0/.1)}

/* ---------- Tables (desktop) -> cards (mobile) ---------- */
.tbl-wrap{overflow-x:auto;max-width:100%}
table{border-collapse:collapse;width:100%;font-size:var(--fs-sm)}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap;vertical-align:middle}
th{font-weight:600;color:var(--muted);font-size:.82rem;text-transform:uppercase;letter-spacing:.03em}
th.sortable{cursor:pointer} th.sortable:hover{color:var(--fg)}
td.r,th.r{text-align:right}
td.wrap{white-space:normal;min-width:200px}
tr[data-row]{cursor:pointer} tr[data-row]:hover{background:var(--surface-2)}
.bulkbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;background:var(--accent-soft);color:var(--accent);padding:8px 12px;border-radius:8px;font-size:.86rem}
.pager{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;font-size:.84rem;color:var(--muted)}
.rule{display:grid;grid-template-columns:28px minmax(0,1.3fr) auto minmax(0,1fr) auto;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line);font-size:.88rem}
.rule:last-child{border-bottom:0}.rule .arrow{color:var(--muted)}
.rule .no{width:24px;height:24px;border-radius:50%;background:var(--surface-2);display:grid;place-items:center;font-size:.74rem;font-weight:600}
.log-row{display:grid;grid-template-columns:110px auto minmax(0,1fr) auto;gap:10px;padding:10px 0;border-bottom:1px solid var(--line);font-size:.86rem;align-items:start}
.log-row time{font-family:var(--f-mono);font-size:.78rem;color:var(--muted)}
.tree{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.tree ul{list-style:none;margin:6px 0 0 18px;padding:0 0 0 12px;border-left:1px solid var(--line);display:grid;gap:6px}
.tree-node{display:flex;gap:10px;align-items:center;flex-wrap:wrap;border:1px solid var(--line);border-radius:8px;padding:8px 12px;background:var(--surface)}
.tree-node b{font-family:var(--f-display);font-weight:500}
.matrix td,.matrix th{text-align:center} .matrix td:first-child,.matrix th:first-child{text-align:left}
.timeline{display:grid;gap:0}
.timeline>div{display:grid;grid-template-columns:110px 1fr;gap:10px;padding:8px 0;border-bottom:1px solid var(--line);font-size:.86rem}

/* ---------- Overlays ---------- */
.overlay{position:fixed;inset:0;background:rgb(0 0 0/.45);z-index:60;display:none}
.overlay.open{display:block}
.modal{position:fixed;z-index:61;left:50%;top:50%;transform:translate(-50%,-50%);width:min(560px,calc(100% - 24px));max-height:calc(100dvh - 32px);overflow:auto;background:var(--surface);border-radius:14px;box-shadow:var(--shadow);padding:18px;display:none;gap:14px}
.modal.open{display:grid}
.modal-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.modal-head .icon-btn{position:relative;font-size:0;color:var(--muted)}
.modal-head .icon-btn::before,.modal-head .icon-btn::after{content:'';position:absolute;left:50%;top:50%;width:20px;height:2px;border-radius:2px;background:currentColor;transform:translate(-50%,-50%) rotate(45deg)}
.modal-head .icon-btn::after{transform:translate(-50%,-50%) rotate(-45deg)}
.modal-head .icon-btn:hover{color:var(--fg)}
.modal-foot{display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.modal>form{display:grid;gap:14px}
.drawer-r{position:fixed;z-index:61;top:0;right:0;bottom:0;width:min(480px,100%);background:var(--surface);box-shadow:var(--shadow);transform:translateX(105%);transition:transform .2s;overflow:auto;padding:18px;display:grid;gap:14px;align-content:start}
.drawer-r.open{transform:none}
.toast-box{position:fixed;z-index:90;left:50%;bottom:calc(76px + env(safe-area-inset-bottom));transform:translateX(-50%);display:grid;gap:6px;width:min(420px,calc(100% - 24px));pointer-events:none}
.toast{background:var(--fg);color:var(--bg);padding:10px 14px;border-radius:10px;font-size:.88rem;box-shadow:var(--shadow);pointer-events:auto}

/* ---------- Shell ---------- */
.shell{display:grid;grid-template-columns:260px minmax(0,1fr);min-height:100dvh}
.shell.admin{grid-template-columns:248px minmax(0,1fr)}
.side{border-right:1px solid var(--line);padding:14px;display:flex;flex-direction:column;gap:14px;background:var(--surface);position:sticky;top:0;height:100dvh;overflow-y:auto}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--f-display);font-weight:600}
.brand img{height:34px;width:auto}
.brand small{display:block;font-weight:400;color:var(--muted);font-size:.72rem}
.side>.row.spread:first-child{border-bottom:1px solid var(--line);padding-bottom:14px}
@media (min-width:901px){
  .side>.row.spread:first-child{box-sizing:border-box;height:52px;margin:-12px -8px 0;padding:0 8px;align-items:center}
  .chat-head{box-sizing:border-box;min-height:52px}
}
.side>.newbtn{margin-top:12px}
.nav{display:grid;gap:2px}
.nav .grp{margin:10px 8px 2px}
.nav a{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:5px 10px;border-radius:8px;font-size:1rem;color:var(--muted);min-height:34px;text-decoration:none}
.nav a:hover{background:var(--surface-2);color:var(--fg)}
.nav a[aria-current="page"]{background:var(--accent-soft);color:var(--accent);font-weight:600}
.nav a .tag{font-size:.78rem}
.newbtn{display:flex;border:1px solid var(--accent);background:var(--accent);color:var(--accent-fg);border-radius:8px;padding:9px;font-weight:600;justify-content:center;text-decoration:none;min-height:40px;align-items:center}
.newbtn:hover{text-decoration:none;filter:brightness(1.08)}
.hist{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.hist li a{display:block;padding:8px 10px;border-radius:6px;font-size:.95rem;color:var(--fg);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-decoration:none}
.hist li a:hover{background:var(--surface-2)}.hist li a.on{background:var(--accent-soft);color:var(--accent);font-weight:500}
.quota{border:1px solid var(--line);border-radius:8px;padding:10px;display:grid;gap:6px;font-size:.82rem}
.me-box{display:flex;align-items:center;gap:10px;font-size:.95rem;margin-top:auto;border-top:1px solid var(--line);padding-top:12px}
.me-box>div{display:grid;min-width:0}.me-box .muted{font-size:.85rem}
.main{min-width:0;display:grid;align-content:start}
.topbar{display:none}
.page{padding:20px;display:grid;gap:18px;align-content:start;min-width:0;max-width:1280px;width:100%}
.page-head{display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:space-between;align-items:end}
.page-head p{max-width:64ch}
.bottomnav{display:none}
.scrim{display:none}

/* ---------- Chat ---------- */
.chat-wrap{display:grid;grid-template-rows:auto minmax(0,1fr) auto;height:100dvh;min-width:0}
.chat-head{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--line);background:var(--surface)}
.msgs{padding:18px 16px;display:grid;grid-template-columns:minmax(0,1fr);gap:16px;align-content:start;overflow-y:auto;overflow-x:hidden;min-height:0}
.msg{max-width:860px;display:grid;grid-template-columns:minmax(0,1fr);gap:8px;min-width:0;font-size:var(--fs-chat);line-height:1.65}
.msg.me{justify-self:end;background:var(--accent-soft);padding:10px 14px;border-radius:12px 12px 2px 12px}
.msg.ai{background:var(--surface);border:1px solid var(--line);padding:12px 14px;border-radius:12px 12px 12px 2px}
.meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:var(--fs-xs);color:var(--muted)}
.msg-actions{display:flex;gap:2px;flex-wrap:wrap}
.msg-actions button{border:1px solid #9a8f8f;background:var(--surface);padding:6px 14px;border-radius:10px;font-size:var(--fs-sm);color:var(--fg);font-weight:500;min-height:44px;display:inline-flex;align-items:center;gap:6px}
.msg-actions button:hover{background:var(--surface-2)}
.msg-actions{gap:8px;margin-top:6px}
.file{display:inline-flex;gap:8px;align-items:center;border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:var(--fs-sm);background:var(--surface);width:fit-content;max-width:100%}
.file b{font-family:var(--f-mono);font-weight:500;font-size:.85rem;overflow-wrap:anywhere}
.ft{width:auto;min-width:28px;height:20px;padding:0 5px;border-radius:4px;background:var(--gem);color:#fff;display:inline-grid;place-items:center;font-size:.6rem;font-weight:700;letter-spacing:.02em;line-height:1;white-space:nowrap;flex:none;vertical-align:middle}
.ft.xls{background:var(--good)} .ft.pdf{background:var(--bad)} .ft.doc{background:var(--gem)}
.src{display:flex;flex-wrap:wrap;gap:6px}.src span{font-size:var(--fs-xs);border:1px solid var(--line);border-radius:99px;padding:1px 9px;color:var(--muted)}
.composer{padding:10px 16px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--surface);display:grid;gap:8px}
.composer form{display:flex;gap:8px;align-items:end}
.composer textarea{flex:1;height:46px;min-height:46px;border-radius:10px;resize:none;font-size:16px}
.send{border:0;background:var(--accent);color:var(--accent-fg);border-radius:10px;padding:0 18px;height:46px;font-weight:600;min-width:64px}
.typing{display:inline-flex;gap:4px}.typing i{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:bl 1s infinite}.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes bl{50%{opacity:.25}}
.typing{align-items:center}.typing-txt{font-style:normal;font-size:13px;margin-left:6px;color:var(--muted);background:linear-gradient(90deg,var(--muted) 30%,var(--fg) 50%,var(--muted) 70%) 0 0/250% 100%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:shim 1.8s linear infinite}.typing-txt:empty{display:none}
@keyframes shim{from{background-position:100% 0}to{background-position:-100% 0}}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,250px),1fr));gap:12px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;display:grid;gap:8px;grid-template-rows:auto auto 1fr auto;min-width:0}
.card h3{font-size:1.1rem}
.card .ex{font-size:var(--fs-sm);color:var(--muted);background:var(--surface-2);border-radius:6px;padding:6px 8px}
.card-foot{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:var(--fs-xs);color:var(--muted);flex-wrap:wrap}
.star{border:0;background:transparent;font-size:1.1rem;color:var(--muted)} .star[aria-pressed="true"]{color:#e0a100}
.dropzone{border:2px dashed var(--line);border-radius:12px;padding:22px;text-align:center;color:var(--muted);display:grid;gap:6px;justify-items:center}
.dropzone:hover{border-color:var(--accent);background:var(--accent-soft)}

/* ---------- Auth ---------- */
.auth{display:grid;place-items:center;padding:32px 16px;min-height:100dvh;background:var(--surface-2)}
.auth-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px;display:grid;gap:14px}
.auth-card .logo-img{height:74px;width:auto;justify-self:center}
.or{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:.8rem}.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.err-page{display:grid;place-items:center;min-height:100dvh;padding:24px;text-align:center}
.err-page .big{font:600 4.5rem var(--f-display);color:var(--accent);line-height:1}
.err-box{display:grid;gap:12px;justify-items:center;max-width:460px}

/* ---------- Mobile ---------- */
@media (max-width:900px){
  .shell,.shell.admin{grid-template-columns:minmax(0,1fr)}
  .side{position:fixed;z-index:70;left:0;top:0;bottom:0;width:min(300px,86vw);transform:translateX(-105%);transition:transform .2s;box-shadow:var(--shadow);height:100dvh;padding-bottom:calc(14px + env(safe-area-inset-bottom))}
  body.nav-open .side{transform:none}
  @media (max-width:600px){.side{width:100vw;border-right:0}}
  .scrim{display:block;position:fixed;inset:0;z-index:65;background:rgb(0 0 0/.45);opacity:0;pointer-events:none;transition:opacity .2s}
  body.nav-open .scrim{opacity:1;pointer-events:auto}
  .topbar{display:flex;align-items:center;gap:6px;position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line);padding:4px 8px;min-height:52px;padding-top:calc(4px + env(safe-area-inset-top))}
  .topbar b{font-family:var(--f-display);font-size:.98rem;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .bottomnav{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;position:fixed;z-index:55;left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
  .bottomnav a,.bottomnav button{display:grid;justify-items:center;gap:1px;padding:7px 2px 6px;font-size:.78rem;color:var(--muted);text-decoration:none;border:0;background:transparent;min-height:58px;align-content:center}
  .bottomnav a[aria-current="page"]{color:var(--accent);font-weight:600}
  .bottomnav .ic{font-size:1.25rem;line-height:1}
  .page{padding:14px 14px 90px}
  body[data-shell] .chat-wrap{height:calc(100dvh - 52px - 58px - env(safe-area-inset-bottom))}
  .toast-box{bottom:calc(70px + env(safe-area-inset-bottom))}
  body[data-page="chat"] .bottomnav{display:none}
  body[data-page="chat"]{position:fixed;left:0;right:0;top:0;height:var(--vvh,100dvh);overflow:hidden}
  body[data-page="chat"][data-shell] .chat-wrap{height:calc(var(--vvh,100dvh) - 52px);padding-bottom:0}
}
@media (max-width:760px){
  .page{padding:12px 12px 90px;gap:14px}
  h1{font-size:1.3rem}
  input,select,textarea{font-size:16px}
  .btn,.btn.sm{min-height:44px}
  .chip{min-height:44px;display:inline-flex;align-items:center}
  .search{width:100%}
  .page-head>.row,.page-head>.btn{width:100%}
  .rule{grid-template-columns:28px 1fr auto}
  .rule .arrow{display:none}.rule>span:nth-child(4){grid-column:2/4}
  .log-row{grid-template-columns:1fr}
  .timeline>div{grid-template-columns:1fr}
  .composer{padding:8px 10px}
  .msgs{padding:12px 10px}.msg{max-width:94%}
  .chat-head{padding:8px 10px}
  /* bảng -> thẻ */
  table.cardify,table.cardify tbody,table.cardify tr,table.cardify td{display:block;width:100%}
  table.cardify thead{display:none}
  table.cardify tr{border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin-bottom:10px;background:var(--surface)}
  table.cardify td{border:0;padding:4px 0;white-space:normal;display:flex;justify-content:space-between;gap:12px;text-align:right}
  table.cardify td::before{content:attr(data-label);font-size:.72rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);text-align:left;flex:none;padding-top:2px}
  table.cardify td.r{text-align:right}
  table.cardify td[data-label=""]::before,table.cardify td:not([data-label])::before{content:none}
  table.cardify td:first-child{font-weight:600}
  .modal{left:0;right:0;bottom:0;top:auto;transform:none;width:100%;border-radius:16px 16px 0 0;max-height:90dvh;padding-bottom:calc(18px + env(safe-area-inset-bottom))}
  .modal-foot .btn{flex:1}
  .drawer-r{width:100%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ---------- Biểu tượng SVG ---------- */
.i{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.nav a .nl{display:flex;align-items:center;gap:10px;min-width:0}
.icon-btn .i{width:20px;height:20px}
.bottomnav .ic .i{width:22px;height:22px}
.star{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;font-size:0}
.star .i{width:19px;height:19px}.star[aria-pressed="true"] .i{fill:#e0a100;stroke:#e0a100}
.star:hover{background:var(--surface-2)}

/* ---------- Lịch sử ở menu trái: cắt chữ dài bằng dấu … ---------- */
.side{overflow-x:hidden}
.side .grid{grid-template-columns:minmax(0,1fr)}
.hist{grid-template-columns:minmax(0,1fr)}
.hi{position:relative;display:flex;align-items:center;gap:2px;border-radius:8px;min-width:0}
.hi:hover,.hi.menu-open{background:var(--surface-2)}
.hi a{flex:1;min-width:0;padding:7px 10px;font-size:.88rem;color:var(--fg);text-decoration:none;border-radius:8px}
.hi a span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hi a.on{background:var(--accent-soft);color:var(--accent);font-weight:500}
.hi .pin{display:grid;place-items:center;width:28px;color:var(--muted);flex:none}
.hi .pin .i{width:15px;height:15px}
.hi-more{display:none;place-items:center;width:30px;height:30px;border:0;background:transparent;border-radius:50%;color:var(--muted);flex:none}
.hi-more .i{width:17px;height:17px;fill:currentColor;stroke:none}
.hi:hover .hi-more,.hi.menu-open .hi-more,.hi-more:focus-visible{display:grid}
.hi:hover .pin,.hi.menu-open .pin{display:none}
.hi-more:hover{background:var(--line);color:var(--fg)}
@media (hover:none){.hi-more{display:grid}.hi .pin{display:none}}
.pop{position:fixed;z-index:80;min-width:230px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:6px;display:grid}
.pop button{display:flex;gap:12px;align-items:center;border:0;background:transparent;text-align:left;padding:10px 12px;border-radius:8px;font-size:.9rem;min-height:var(--tap)}
.pop button:hover,.pop button:focus-visible{background:var(--surface-2)}
.pop button.danger{color:var(--bad)}
.pop .i{color:var(--muted)}.pop .danger .i{color:var(--bad)}

/* ---------- Ma trận cấp phép / dòng cố định ---------- */
.matrix th:first-child,.matrix td:first-child{position:sticky;left:0;background:var(--surface);z-index:1;min-width:150px}
.mx-sel{width:100%;min-width:74px;font-size:.78rem;padding:4px 4px}
.mx-sel[data-l="1"]{background:var(--good-soft);color:var(--good)}
.mx-sel[data-l="2"]{background:var(--accent-soft);color:var(--accent);font-weight:600}
.swatches{display:flex;gap:8px;flex-wrap:wrap}
.swatch{width:34px;height:34px;border-radius:50%;border:2px solid var(--surface);box-shadow:0 0 0 1px var(--line);padding:0}
.swatch[aria-pressed="true"]{box-shadow:0 0 0 2px var(--fg)}
.logo-prev{width:92px;height:92px;border:1px dashed var(--line);border-radius:12px;display:grid;place-items:center;background:var(--surface-2);overflow:hidden}
.logo-prev img{max-width:84%;max-height:84%;object-fit:contain}
.preview{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg)}
.preview-top{display:flex;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--line);background:var(--surface)}
.preview-top img{height:28px;width:auto}
.preview-body{padding:12px;display:grid;gap:10px}
.chip-list{display:flex;flex-wrap:wrap;gap:6px}
.chip-x{display:inline-flex;align-items:center;gap:4px;border:1px solid var(--line);border-radius:99px;padding:2px 4px 2px 10px;font-size:.82rem;background:var(--surface)}
.chip-x button{border:0;background:transparent;width:22px;height:22px;border-radius:50%;line-height:1}
.chip-x button:hover{background:var(--surface-2)}
.acl-row{display:grid;grid-template-columns:minmax(0,1fr) 140px;gap:8px;align-items:center;padding:7px 0;border-bottom:1px solid var(--line);font-size:.88rem}
.acl-row:last-child{border-bottom:0}
.acl-row select{width:100%}
/* Menu cài đặt */
.pop a{display:flex;gap:12px;align-items:center;padding:10px 12px;border-radius:8px;font-size:.9rem;min-height:var(--tap);color:var(--fg);text-decoration:none}
.pop a:hover,.pop a:focus-visible{background:var(--surface-2)}
.pop a.danger{color:var(--bad)}.pop a.danger .i{color:var(--bad)}
.pop a .i{color:var(--muted)}
.pop hr{border:0;border-top:1px solid var(--line);margin:4px 6px}
.pop.wide{min-width:260px}
.pop.wide a{padding:6px 12px;min-height:36px}
.pop.wide hr{margin:2px 6px}
.pop .seg-row{display:grid;gap:4px;padding:4px 12px;font-size:.84rem;color:var(--muted)}
.pop .seg-row .chip{min-height:32px;padding:3px 12px}
.pop .seg-row .chips:has(.chip + .chip){display:inline-flex;align-self:start;justify-self:start;gap:2px;padding:3px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}
.pop .seg-row .chips:has(.chip + .chip) .chip{border-color:transparent;background:transparent;border-radius:9px}
.pop .seg-row .chips:has(.chip + .chip) .chip[aria-pressed="true"]{background:var(--accent-soft);border-color:transparent}
.me-box .icon-btn{margin-left:auto}

.quota{padding:8px 10px;gap:5px;color:inherit;text-decoration:none;font-size:.78rem}
.quota:hover{background:var(--surface-2);text-decoration:none}

.side .quota{margin-top:auto;margin-bottom:14px;text-align:left}
.quota .row{display:flex;flex-direction:column;align-items:flex-start;gap:2px}
.side .quota .label{padding:0;margin:0;text-indent:0}
.quota + .me-box{margin-top:0}

.page{max-width:none}

/* Ô soạn tin kiểu Gemini */
.composer{border-top:0;background:var(--bg);padding:8px 16px calc(14px + env(safe-area-inset-bottom))}
.composer .cbox{display:grid;gap:4px;max-width:860px;width:100%;margin:0 auto;background:var(--surface-2);border:1px solid var(--line);border-radius:26px;padding:10px 12px 8px}
.composer .cbox:focus-within{border-color:var(--accent)}
.ctags{display:flex;flex-wrap:wrap;gap:6px;padding:0 4px}
.ctags:empty,.composer .ctags:not(:has(*)){display:none}
.composer .cbox textarea{border:0;background:transparent;padding:6px 6px;min-height:44px;height:44px;max-height:160px;width:100%;font-size:16px;border-radius:0}
.composer .cbox textarea:focus{outline:0}
.crow{display:flex;align-items:center;gap:6px}
.cbtn{width:40px;height:40px;border-radius:50%;border:0;background:transparent;display:grid;place-items:center;flex:none}
.cbtn:hover{background:var(--line)}
.cbtn .i{width:22px;height:22px}
.mpill{display:inline-flex;align-items:center;gap:4px;border:0;background:var(--line);border-radius:99px;padding:0 10px 0 14px;height:38px;font-size:.88rem}
.mpill .i{width:16px;height:16px}
.send.round{width:40px;height:40px;min-width:40px;padding:0;border-radius:50%;display:grid;place-items:center}
.send.round .i{width:20px;height:20px;stroke:#fff}
.pop .two{align-items:center;justify-content:space-between;text-align:left}
.pop .two .i{color:var(--accent);flex:none}
.pop button .i:last-child:not(:first-child){margin-left:auto;color:var(--accent)}

/* Ô soạn tin: tất cả trên một hàng */
.composer .cbox{display:flex;flex-wrap:wrap;align-items:center;gap:6px;border-radius:28px;padding:6px 8px}
.composer .ctags{order:-1;flex:0 0 100%;padding:4px 8px 0}
.composer .crow{display:contents}
.composer .crow .grow{display:none}
.composer .cbtn{order:0}
.composer .cbox textarea{order:1;flex:1 1 0;width:auto;min-width:0}
.composer .mpill{order:2}
.composer .send.round{order:3}

/* DEV-A r1 ===================================================== */
/* ---- Dùng chung: kebab, hộp xác nhận, toast, tooltip, bảng cuộn, code, thanh hạn mức ---- */
.toast{font-size:1rem;padding:14px 18px;border-left:6px solid var(--good)}
.toast-box{bottom:calc(86px + env(safe-area-inset-bottom))}
.tip{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;border:1px solid #9a8f8f;background:var(--surface);color:var(--fg);font-size:.9rem;font-weight:700;cursor:help;position:relative;padding:0}
.tip:hover::after,.tip:focus::after{content:attr(data-tip);position:absolute;z-index:70;left:50%;bottom:calc(100% + 8px);transform:translateX(-50%);width:max-content;max-width:min(260px,70vw);background:var(--fg);color:var(--bg);font-weight:400;font-size:.9rem;line-height:1.45;padding:8px 12px;border-radius:8px;text-align:left}
.kebab{width:var(--tap);height:var(--tap);border:1px solid transparent;border-radius:10px;background:transparent;display:inline-grid;place-items:center;position:relative}
.kebab:hover{background:var(--surface-2);border-color:var(--line)}
.kmenu{position:absolute;right:0;top:calc(100% + 4px);z-index:40;min-width:210px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:6px;display:none;text-align:left}
.kmenu.open{display:grid}
.kmenu button,.kmenu a{display:flex;gap:10px;align-items:center;border:0;background:transparent;padding:10px 12px;border-radius:8px;min-height:var(--tap);font-size:1rem;color:var(--fg);text-align:left;text-decoration:none;width:100%}
.kmenu button:hover,.kmenu a:hover{background:var(--surface-2)}
.kmenu .danger{color:var(--bad)}
.kmenu hr{border:0;border-top:1px solid var(--line);margin:4px 0}
.modal.confirm{width:min(440px,calc(100% - 24px))}
.modal.confirm h3{font-size:1.25rem}
.modal.confirm .modal-foot .btn{min-height:50px;min-width:120px;font-size:1.05rem}
.btn.danger-fill{background:var(--bad);border-color:var(--bad);color:#fff;font-weight:600}
.tbl-scroll{overflow-x:auto;max-width:100%;border:1px solid var(--line);border-radius:10px;scrollbar-width:auto;scrollbar-color:#8a7f7f var(--surface-2)}
.tbl-scroll::-webkit-scrollbar{height:14px}.tbl-scroll::-webkit-scrollbar-thumb{background:#8a7f7f;border-radius:99px;border:3px solid var(--surface-2)}.tbl-scroll::-webkit-scrollbar-track{background:var(--surface-2)}
.codeblock{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#1e1b1b;color:#f1ebeb}
.codeblock .ch{display:flex;justify-content:space-between;align-items:center;padding:4px 6px 4px 14px;background:#2e2929;font-size:.9rem;color:#d8cfcf}
.codeblock .ch .btn{min-height:44px;background:#3b3434;color:#fff;border-color:#5a5050}
.codeblock pre{margin:0;padding:12px 14px;overflow-x:auto;font:.95rem/1.6 var(--f-mono);tab-size:2}
.codeblock .k{color:#ff9d6e}.codeblock .s{color:#a5d6a7}.codeblock .c{color:#9e9494;font-style:italic}.codeblock .f{color:#8ab4f8}.codeblock .n{color:#f5d76e}
.qbar{display:grid;gap:4px}
.qbar .meter{height:12px}
.qbar .meter i{min-width:4px}
.qtxt{font-size:var(--fs-sm)}
.qtxt b{font-variant-numeric:tabular-nums}

/* ---- Chat: đầu trang gọn, ô nhập, nút Gửi ---- */
.chat-head{flex-wrap:nowrap;gap:8px;padding:8px 14px}
.chat-head>.row{flex-wrap:nowrap;min-width:0}
.chat-head>.row:first-child{flex:1}
.chat-head b{font-size:1.05rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.chat-head .tag{white-space:nowrap;flex:none;max-width:42%;overflow:hidden;text-overflow:ellipsis}
.chat-head .kmenu-wrap{position:relative}
.composer .cbox{border-radius:36px;align-items:center;padding:6px 14px 6px 10px}
.composer .mp-k{display:none}
.composer .cbox textarea{min-height:48px;height:48px;max-height:180px;font-size:1.05rem;padding:11px 8px;line-height:1.45;resize:none;overflow-y:auto}
.composer .send.round{width:auto;min-width:84px;height:48px;padding:0 18px;border-radius:24px;display:inline-flex;gap:6px;align-items:center;justify-content:center;font-size:1.05rem;color:#fff}
.composer .cbtn{width:48px;height:48px}
.composer .mpill{height:48px;font-size:1rem}
.composer-note{max-width:860px;margin:0 auto;width:100%;font-size:.9rem;color:var(--fg);display:flex;gap:8px;align-items:flex-start;padding:2px 6px 6px}
.composer-note .i{color:var(--warn);margin-top:3px}
.composer-tools{max-width:860px;margin:0 auto;width:100%;display:flex;gap:8px;flex-wrap:wrap;padding:0 4px 6px}
.composer-tools .chip,.composer-tools .btn{min-height:44px}
.dlp-box{max-width:860px;margin:0 auto 8px;width:100%;border:2px solid var(--warn);background:var(--warn-soft);border-radius:12px;padding:12px 14px;display:grid;gap:8px;font-size:1.05rem}
.dlp-box .row{gap:10px}
.mask{background:#2a2424;color:#2a2424;border-radius:4px;padding:0 4px;letter-spacing:.05em;user-select:none}
.mask::before{content:"●●●●";color:#fff}
.mask{font-size:0}.mask::before{font-size:1rem}
.ctx-row{max-width:860px;margin:0 auto;width:100%;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:8px;padding:0 4px 8px}
.ctx-row select,.ctx-row input{width:100%}
.conv-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
.conv-actions .btn{min-height:44px}
details.more{font-size:var(--fs-sm)}
details.more summary{cursor:pointer;color:var(--accent);min-height:44px;display:flex;align-items:center;font-weight:500}
details.more .meta{margin-top:2px}

/* ---- Bảng trong chat ---- */
.chat-tbl-tools{display:flex;gap:8px;flex-wrap:wrap}
.chat-tbl-tools .btn{min-height:44px}
.chat-tbl{width:100%;font-size:1rem}
.chat-tbl th,.chat-tbl td{white-space:normal;min-width:110px;vertical-align:top;overflow-wrap:anywhere}
.chat-tbl th{position:sticky;top:0;background:var(--surface-2);z-index:2;text-transform:none;font-size:.95rem;color:var(--fg);letter-spacing:0}
.chat-tbl td.r,.chat-tbl th.r{text-align:right;white-space:nowrap}
.chat-tbl .neg{color:var(--bad);font-weight:600}
.chat-tbl tr.flag-bad{background:var(--bad-soft)}
.chat-tbl tr.flag-warn{background:var(--warn-soft)}
.chat-tbl tfoot td{font-weight:700;border-top:2px solid var(--fg);background:var(--surface-2)}
.chat-tbl-wrap.full{position:fixed;inset:0;z-index:62;background:var(--surface);padding:12px;overflow:auto;display:grid;align-content:start;gap:8px}
.legend-flag{display:flex;gap:12px;flex-wrap:wrap;font-size:.9rem}
.legend-flag i{display:inline-block;width:14px;height:14px;border-radius:3px;vertical-align:-2px;margin-right:4px}

/* ---- Nguồn, trích dẫn ---- */
.srccards{display:grid;gap:8px}
.srccard{border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:var(--surface-2);display:grid;gap:3px;font-size:var(--fs-sm)}
.srccard b{font-size:1rem}
.srccard .u{font-family:var(--f-mono);font-size:.85rem;overflow-wrap:anywhere;color:var(--accent)}
.fn{font-size:.8rem;vertical-align:super;color:var(--accent);font-weight:700}
.warn-ai{font-size:.92rem;color:var(--warn);display:flex;gap:6px;align-items:flex-start}
.med-banner{border:2px solid var(--bad);background:var(--bad-soft);border-radius:10px;padding:10px 14px;font-size:1rem}

/* ---- Màn chat mới: việc hay làm theo vai ---- */
.starters{max-width:860px;margin:0 auto;width:100%;display:grid;gap:12px}
.starters h2{font-size:1.4rem}
.starters h2 .br-m{display:none}
@media (max-width:640px){.starters h2 .br-m{display:inline}}
.starters h2 u.hoa{text-decoration:none;display:inline-block;line-height:1.1;font-weight:800;color:var(--accent);border-bottom:1px solid var(--accent)}
.starter-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:10px}
.starter{display:grid;gap:4px;text-align:left;border:2px solid var(--line);background:var(--surface);border-radius:14px;padding:14px;min-height:76px;font-size:1.05rem}
.starter:hover{border-color:var(--accent);background:var(--accent-soft)}
.starter small{color:var(--muted);font-size:.9rem}
.role-tabs{display:flex;gap:8px;flex-wrap:wrap}

/* ---- Nút lớn (trang đầu, học tập) ---- */

/* ---- Lịch sử: thẻ gọn ---- */
.hlist{display:grid;gap:10px}
.hcard{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:10px;align-items:center;border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:8px 8px 8px 12px;position:relative}
.hcard:hover{background:var(--surface-2)}
.hcard>a.hmain{display:grid;gap:2px;min-width:0;color:var(--fg);text-decoration:none;padding:6px 0}
.hcard .t{font-weight:600;font-size:1.05rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hcard .s{font-size:.92rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hcard.hidden-row{display:none}
.pg{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;width:100%}
.pg-info{color:var(--muted);font-size:var(--fs-sm)}
.pg-list{display:flex;flex-wrap:wrap;gap:4px;list-style:none;margin:0;padding:0}
.pg-btn{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--fg);font-size:var(--fs-sm);text-decoration:none}
a.pg-btn:hover{border-color:var(--accent);color:var(--accent)}
.pg-btn.cur{background:var(--accent);border-color:var(--accent);color:var(--accent-fg);font-weight:600}
.pg-btn.off{opacity:.45;cursor:default}
.hfoot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:var(--fs-sm);padding:6px 4px}
.file-days{font-weight:600}
.file-days.soon{background:var(--warn-soft);color:var(--warn);padding:2px 10px;border-radius:99px}

/* ---- Trợ giúp ---- */
.help-lg li{margin-bottom:4px}
.ok-list,.no-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.ok-list li,.no-list li{display:flex;gap:10px;align-items:flex-start}
.no-list .ico{color:var(--bad)}.ok-list .ico{color:var(--good)}
.ico-x,.ico-v{flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#fff;font-size:1rem;line-height:1}
.ico-x{background:var(--bad)}.ico-v{background:var(--good)}
.steps3{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:12px}
.step3{border:1px solid var(--line);border-radius:12px;padding:14px;display:grid;gap:8px;justify-items:center;text-align:center;background:var(--surface)}
.step3 svg{width:84px;height:84px}
.sticky-help{position:fixed;right:14px;bottom:calc(76px + env(safe-area-inset-bottom));z-index:54}
@media (min-width:901px){.sticky-help{bottom:20px}}
details.faq{border-bottom:1px solid var(--line)}
details.faq summary{min-height:50px;display:flex;align-items:center;cursor:pointer;font-weight:600;font-size:1.05rem}
details.faq p{padding:4px 0 12px}

/* ---- Hạn mức ---- */
.qwarn{border-left:6px solid var(--bad);background:var(--bad-soft);padding:12px 14px;border-radius:8px;font-size:1.05rem}
.q-detail{display:grid;gap:8px}
.q-detail .mini-meter{min-width:0}
.sidebar-quota{display:block}

/* ---- Đăng nhập ---- */
.pin-input{letter-spacing:.5em;text-align:center;font-size:1.5rem}

/* ---- Mobile ---- */
@media (max-width:760px){
  .chat-head .tag{display:none}
  .chat-head .tag.keep{display:inline-block}
  .msg{max-width:98%}
  .msg-actions button{flex:1 1 calc(50% - 8px);justify-content:center}
  .composer .send.round{min-width:76px}
  .composer .mpill{display:none}
  .chat-tbl-wrap.cards .chat-tbl,.chat-tbl-wrap.cards .chat-tbl tbody,.chat-tbl-wrap.cards .chat-tbl tr,.chat-tbl-wrap.cards .chat-tbl td,.chat-tbl-wrap.cards .chat-tbl tfoot{display:block;width:100%}
  .chat-tbl-wrap.cards .chat-tbl thead{display:none}
  .chat-tbl-wrap.cards .chat-tbl tr{border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin-bottom:10px;background:var(--surface)}
  .chat-tbl-wrap.cards .chat-tbl tr.flag-bad{background:var(--bad-soft)}.chat-tbl-wrap.cards .chat-tbl tr.flag-warn{background:var(--warn-soft)}
  .chat-tbl-wrap.cards .chat-tbl td{border:0;padding:4px 0;display:flex;justify-content:space-between;gap:12px;text-align:right;white-space:normal}
  .chat-tbl-wrap.cards .chat-tbl td::before{content:attr(data-label);font-weight:600;color:var(--muted);text-align:left;flex:none;max-width:45%}
  .chat-tbl-wrap.cards .tbl-scroll{border:0;overflow:visible}
  .hcard{grid-template-columns:auto minmax(0,1fr) auto}
  .bigbtn{min-height:96px;padding:16px}
}
@media (min-width:761px){.chat-tbl-wrap .only-mobile{display:none}}
/* /DEV-A r1 ==================================================== */

/* DEV-B r2 ===================================================== */
.onb-card{position:relative}
.onb-x{position:absolute;top:8px;right:8px;width:44px;height:44px;border:0;border-radius:99px;background:transparent;color:var(--fg);font-size:1.8rem;line-height:1;cursor:pointer}
.onb-x:hover{background:var(--line)}
.onb-card h2{padding-right:44px}
.sticky-help{right:10px;bottom:calc(84px + env(safe-area-inset-bottom))}
.mine-box{border:2px solid var(--accent);border-radius:16px;padding:14px;background:var(--accent-soft)}
.h-mine{font-size:1.15rem;margin:0 0 10px}
.mine-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:10px}
.mine-btn{display:grid;gap:4px;min-height:64px;padding:12px 14px;border:2px solid var(--line);border-radius:12px;background:var(--surface);color:var(--fg);text-decoration:none}
.mine-btn:hover{border-color:var(--accent);text-decoration:none}
.card.sk .sk-d{color:var(--fg);opacity:.85;margin:0}
.card.sk .ex{font-size:.95rem;color:var(--fg);opacity:.92}
.card.sk .btn.pri{min-height:44px;padding:0 20px;font-size:1rem}
.card .note-ethic{color:var(--fg);background:var(--accent-soft);padding:6px 10px;border-radius:8px;margin:0}
.res-bar{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
table.kq th,table.kq td{padding:10px 12px}
table.kq tfoot th{background:var(--accent-soft);font-weight:700;border-top:2px solid var(--fg)}
.neg{color:#b42318;font-weight:600}
table.kq tr.row-warn td{background:#fff4c2;color:#3d3000}
table.kq tr.row-bad td{background:#fddcd8;color:#5c1008}
table.kq td.cell-best{background:#d1f0d9;color:#0b3d1a;font-weight:700}
.tag.warn{background:#fff4c2;color:#3d3000;font-weight:600}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .neg{color:#ff9b91}:root:not([data-theme="light"]) table.kq tr.row-warn td{background:#4a3f0a;color:#fff3b0}:root:not([data-theme="light"]) table.kq tr.row-bad td{background:#5a1c16;color:#ffd9d4}:root:not([data-theme="light"]) table.kq td.cell-best{background:#12482a;color:#c9f5d6}:root:not([data-theme="light"]) .tag.warn{background:#4a3f0a;color:#fff3b0}}
:root[data-theme="dark"] .neg{color:#ff9b91}:root[data-theme="dark"] table.kq tr.row-warn td{background:#4a3f0a;color:#fff3b0}:root[data-theme="dark"] table.kq tr.row-bad td{background:#5a1c16;color:#ffd9d4}:root[data-theme="dark"] table.kq td.cell-best{background:#12482a;color:#c9f5d6}:root[data-theme="dark"] .tag.warn{background:#4a3f0a;color:#fff3b0}
.home-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:14px}
.todo,.recent{list-style:none;margin:0 0 8px;padding:0;display:grid;gap:8px}
.recent li{display:grid;gap:2px}
.banner-warn{background:#fff4c2;color:#3d3000;border:2px solid #e0b400;border-radius:12px;padding:12px 16px;font-size:1.05rem}
.banner-warn[hidden]{display:none}
:root[data-theme="dark"] .banner-warn{background:#4a3f0a;color:#fff3b0}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .banner-warn{background:#4a3f0a;color:#fff3b0}}
.privacy-note{color:var(--fg);margin:4px 0 0}
.days-big{font-size:1.25rem;font-weight:700}
.file-days.days-big.soon{background:#fff4c2;color:#6b4e00;padding:2px 8px;border-radius:8px}
.files-tbl .fn-t{overflow-wrap:anywhere;word-break:break-word;white-space:normal}
.files-tbl .fname{max-width:340px}
.files-tbl .acts .btn.pri{font-weight:700}
.files-tbl .acts .btn.ghost{font-weight:400}
.kebab-lg{font-size:1.6rem;min-width:44px;min-height:44px}
.role-block>summary{cursor:pointer;min-height:44px;display:flex;align-items:center}
.steps-ex{display:grid;gap:8px;padding-left:20px}
/* /DEV-B r2 ==================================================== */
/* DEV-A r2 ===================================================== */
:root{--hl:#fff1b8;--hl-fg:#1f1919;--hl-line:#d9a400}
:root[data-theme="dark"]{--hl:#4b3d08;--hl-fg:#fff6d0;--hl-line:#e8b923}

/* ---- R2-02: chống tràn ngang, chữ dài xuống dòng gọn ---- */
html{overflow-x:hidden}
body{overflow-x:clip}
.chat-wrap{grid-template-columns:minmax(0,1fr)}
.chat-head>.row:first-child{min-width:0;overflow:hidden}
main,.main,.page,.panel,.cols-2>*,.msg,.msgs,.chat-wrap{min-width:0;max-width:100%}
img,svg,video,iframe{max-width:100%}
.btn,.bigbtn,.starter,.qt,.tabs button,.tabs a{white-space:normal;overflow-wrap:anywhere;line-height:1.3}
.btn{text-align:center}
.chip{white-space:normal;text-align:left;line-height:1.3;padding-top:8px;padding-bottom:8px;overflow-wrap:anywhere}
.topbar{min-width:0}
.topbar .qmini{flex:none;white-space:nowrap;font-weight:600}
.onb .onb-card{width:100%;max-width:min(480px,calc(100vw - 32px));overflow-wrap:anywhere;overflow-x:hidden}
.onb .onb-card .chips{flex-wrap:wrap}
.onb .onb-foot{position:sticky;bottom:-22px;background:var(--surface);padding-top:10px}
@media (max-width:760px){
  .onb{padding:16px;align-items:end}
  .onb .onb-card{max-width:calc(100vw - 32px);padding:18px}
  .onb .onb-foot{flex-direction:column-reverse;align-items:stretch;gap:10px;bottom:-18px}
  .onb .onb-foot .btn,.onb .onb-foot .btn.pri{width:100%;min-height:52px;padding:8px 16px}
  .topbar b{font-size:1rem}
  body[data-page="chat"] .topbar .fontbtn{display:none}
  .chat-head .qpill{display:none}
  body[data-page="chat"] .chat-head{display:none}
  body[data-page="chat"] .topbar > b{display:none}
  body[data-page="chat"] .chat-tools{display:none}
  body[data-page="chat"] .topbar .chat-tools{display:flex;align-items:center;margin-left:auto}
  body[data-page="chat"] .composer{position:absolute;left:0;right:0;bottom:0;z-index:30;padding-bottom:max(8px,calc(env(safe-area-inset-bottom) - 12px))}
  body[data-page="chat"].kb-open .composer{padding-bottom:8px}
  body[data-page="chat"] .msgs{padding-bottom:calc(var(--cmp-h,96px) + 12px)}
  body[data-page="chat"] .topbar .mpill.in-topbar{display:block;flex:0 1 auto;field-sizing:content;width:auto;min-width:0;max-width:100%;height:40px;padding:0 22px 0 0;margin:0;font-size:1rem;font-weight:600;color:inherit;border:0;border-radius:0;box-shadow:none;appearance:none;-webkit-appearance:none;background:transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right center/16px 16px}
}
@media (max-width:900px){
  body[data-shell="user"] main.page{padding-bottom:calc(100px + env(safe-area-inset-bottom))}
  .bottomnav{position:fixed;bottom:0;padding-bottom:env(safe-area-inset-bottom)}
  .sticky-help{bottom:calc(84px + env(safe-area-inset-bottom))}
  :target{scroll-margin-bottom:110px}
}

/* ---- R2-03: chat gọn ---- */
.chat-head .qpill{flex:none;white-space:nowrap;font-weight:600;min-height:40px}
.chat-head>.row:last-child{flex-wrap:nowrap;flex:none}
body[data-page="chat"] .assist-row,body[data-page="chat"] #roleHint{display:none}
body[data-page="chat"] #piiWarn{display:none!important}
.composer-note{background:var(--hl);color:var(--hl-fg);border:1px solid var(--hl-line);border-radius:10px;font-weight:700;font-size:max(15px,.95rem);line-height:1.45;padding:8px 12px;align-items:center;margin-bottom:6px;width:calc(100% - 0px);max-width:860px}
.composer-note .i{color:var(--hl-fg);margin:0}
.dlp-box b{font-size:1.1rem}
.dlp-box .btn{min-height:50px;font-size:1.05rem}
.msg-actions .kwrap{position:relative;display:inline-flex}
.msg-actions .kmenu{top:auto;bottom:calc(100% + 4px);right:auto;left:0;min-width:250px;z-index:45}
.msg-actions .kmenu.down{top:calc(100% + 4px);bottom:auto}
.msg-actions .kmenu button{border:0;background:transparent;width:100%;justify-content:flex-start;padding:10px 12px;min-height:var(--tap);font-size:1rem;border-radius:8px}
.msg-actions .kmenu button:hover{background:var(--surface-2)}
body[data-page="chat"] .sugs,.composer-tools{flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}
.sugs>*,.composer-tools>*{flex:none;white-space:nowrap}
.composer-tools .check{min-height:44px;padding:0 6px;font-weight:500}
.cbtn.mob{display:none}
.cbtn.rec{background:var(--bad-soft);color:var(--bad)}
.ctx-row .field[hidden]{display:none}
.newdrop{max-width:860px;margin:0 auto;width:100%;padding:28px 18px;cursor:pointer;background:var(--surface-2)}
.newdrop b{font-size:1.2rem;color:var(--fg)}
.dropzone.over{border-color:var(--accent);background:var(--accent-soft)}
@media (max-width:760px){
  .composer .cbox{gap:4px;padding:6px}
  .composer .cbox textarea{order:1;flex:1 1 100%}
  .composer .cbtn{order:2;width:48px;height:48px}
  .cbtn.mob{display:grid}
  .composer .mpill{order:8;display:inline-flex;margin-left:auto;padding:0 6px 0 12px;font-size:.92rem;white-space:nowrap;gap:2px}
  .composer .send.round{order:9;min-width:72px;padding:0 14px}
  .composer{padding-top:6px}
  .msg-actions>button,.msg-actions>.kwrap{flex:1 1 calc(33% - 8px)}
  .msg-actions>.kwrap>button{flex:1}
  .msg-actions .kmenu{left:auto;right:0}
  /* Nút chỉ có icon (sao chép, thích…): icon và vùng chạm đủ lớn cho ngón tay */
  .msg-actions .mact{min-width:40px;min-height:40px;justify-content:center;padding:0 8px}
  .msg-actions .mact .i{width:22px;height:22px}
}

/* ---- Xuất tệp ---- */
.export-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:12px;border:2px solid var(--line);border-radius:12px;background:var(--surface-2)}
.export-bar .lbl{flex:1 1 100%;font-weight:600}
.export-bar .btn{flex:1 1 130px;min-height:54px;font-size:1.08rem;font-weight:600;gap:8px}
.export-bar .check{flex:1 1 100%;min-height:44px;font-weight:500}
.export-bar .ft{width:auto;min-width:30px;height:24px;font-size:.62rem}

/* ---- R2-05: nguồn, trích dẫn ---- */
details.srcbox{border:1px solid var(--line);border-radius:10px;background:var(--surface-2)}
details.srcbox>summary{cursor:pointer;min-height:48px;display:flex;align-items:center;padding:0 14px;font-weight:700;font-size:1.02rem;color:var(--accent)}
details.srcbox>.srccards{padding:0 10px 10px}
.srccard{background:var(--surface)}
.srccard .u{font-family:var(--f-body);font-size:.95rem;color:var(--muted)}
.src-tags{display:flex;flex-wrap:wrap;gap:6px}
.src-st,.src-tr{display:inline-flex;gap:6px;align-items:center;font-weight:700;font-size:.95rem;line-height:1.3;padding:4px 12px;border-radius:99px;border:1px solid}
.src-st.ok,.src-tr.ok{background:var(--good-soft);color:var(--good);border-color:var(--good)}
.src-st.bad{background:var(--bad-soft);color:var(--bad);border-color:var(--bad)}
.src-tr.guess{background:var(--warn-soft);color:var(--warn);border-color:var(--warn)}
.law-warn{border-left:6px solid var(--bad);background:var(--bad-soft);color:var(--fg);font-size:1.02rem;padding:10px 14px;border-radius:8px;line-height:1.5}
.law-warn b{color:var(--bad)}
.warn-ai{background:var(--hl);color:var(--hl-fg);border:1px solid var(--hl-line);font-weight:700;font-size:max(15px,.95rem);line-height:1.45;padding:8px 12px;border-radius:8px;align-items:center}
.srccard[hidden]{display:none}

/* ---- R2-06: code, đa ngữ, mô hình ---- */
.codeblock{max-width:100%}
.codeblock .ch .lang{font-weight:700;letter-spacing:.05em;text-transform:uppercase;font-size:.85rem}
.codeblock pre{white-space:pre;max-width:100%}
.codeblock .sel{color:#ff9d6e}.codeblock .prop{color:#8ab4f8}.codeblock .val{color:#a5d6a7}.codeblock .cn{color:#f5d76e}.codeblock .cm{color:#9e9494;font-style:italic}.codeblock .pu{color:#d8cfcf}
.ko{font-family:"Noto Sans KR","Malgun Gothic","Apple SD Gothic Neo",var(--f-body);font-size:1.15rem;font-weight:500}
.mpill .pinned{width:14px;height:14px;opacity:.8}
.model-opt{display:grid;gap:8px}
.model-opt label{display:flex;gap:12px;align-items:flex-start;border:2px solid var(--line);border-radius:12px;padding:12px;background:var(--surface);min-height:var(--tap);cursor:pointer}
.model-opt label:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
.model-opt input{margin-top:3px}
.model-opt b{display:block}
.model-opt label>span>span{display:block}
.model-opt .cost{margin-top:2px;font-weight:700;font-size:.92rem}

/* ---- R2-04/07: lượt hỏi, lịch sử ---- */
.tbl-plain th{text-transform:none;letter-spacing:0;font-size:1rem;color:var(--fg);font-weight:700}
.tbl-plain td{font-size:1.05rem}
.range-row{display:flex;flex-wrap:wrap;gap:8px;align-items:end}
.range-row .field{min-width:150px}
.hcard{grid-template-columns:auto minmax(0,1fr) auto auto}
.hcard>.hck{grid-column:1}
.hcard>a.hmain{grid-column:2}
.hcard>.hend{grid-column:3;display:flex;gap:8px;align-items:center}
.hcard>.kwrap{grid-column:4}
.hcard .hend .btn{min-height:44px;font-weight:600;border-color:var(--accent);color:var(--accent)}
.hcard .hend .btn:hover{background:var(--accent-soft)}
.hcard .hend .tag{white-space:nowrap}
.hcard .t{white-space:normal;overflow-wrap:anywhere}
.hcard .s{white-space:normal}
.hbulk-acts{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.bulkbar{color:var(--fg)}
@media (max-width:760px){
  .hcard{grid-template-columns:auto minmax(0,1fr) auto}
  .hcard>.hck{grid-column:1;grid-row:1/3}
  .hcard>a.hmain{grid-column:2;grid-row:1}
  .hcard>.kwrap{grid-column:3;grid-row:1}
  .hcard>.hend{grid-column:2/4;grid-row:2;justify-content:space-between}
  .hcard .hend .btn{flex:1}
}

/* ---- R2-08: học tập ---- */
.snap-box{border:3px dashed var(--line);border-radius:14px;padding:16px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;background:var(--surface)}
.snap-box .btn{min-height:54px;font-size:1.05rem}
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,150px),1fr));gap:10px}
.stat{border:1px solid var(--line);border-radius:10px;padding:12px;display:grid;gap:2px;background:var(--surface)}
.stat .v{font-family:var(--f-display);font-size:1.5rem;font-weight:600}
.flash{border:1px solid var(--line);border-radius:10px;padding:12px;background:var(--surface-2);display:grid;gap:6px}
.sum-box{border-left:6px solid var(--accent);background:var(--surface-2);border-radius:8px;padding:12px 14px;display:grid;gap:6px}
.policy-line{font-size:.95rem;color:var(--fg);background:var(--surface-2);border-radius:8px;padding:8px 12px}
@media (max-width:900px){.bigbtns.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:420px){.bigbtns.four{gap:10px}.bigbtns.four .bigbtn{padding:12px;min-height:96px}.bigbtns.four .bigbtn b{font-size:1.1rem}}

/* ---- R2-09: đăng nhập, tài khoản ---- */
.role-pick{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.role-pick button{border:2px solid #9a8f8f;background:var(--surface);border-radius:12px;min-height:60px;padding:8px 6px;font-weight:600;font-size:1.05rem;line-height:1.25}
.role-pick button[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.role-note{font-size:.95rem;color:var(--fg);background:var(--surface-2);border-radius:8px;padding:8px 12px}
.pin-wrap{position:relative}
.pin-wrap input{padding-right:64px}
.pin-wrap .eye{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:54px;height:48px;border:0;background:transparent;display:grid;place-items:center;border-radius:8px;color:var(--fg)}
.pin-wrap .eye:hover{background:var(--surface-2)}
.pin-wrap .eye .i{width:24px;height:24px}
.field-err{color:var(--bad);font-weight:700;font-size:1rem}
details.adv{border:1px solid var(--line);border-radius:12px;background:var(--surface)}
details.adv>summary{cursor:pointer;min-height:56px;display:flex;align-items:center;gap:8px;padding:0 16px;font-weight:700;font-size:1.1rem;font-family:var(--f-display)}
details.adv>.adv-body{padding:0 16px 16px;display:grid;gap:14px}
.perm-list{margin:0;padding-left:20px;display:grid;gap:4px}
.perm-list li.no{color:var(--muted)}
/* /DEV-A r2 ==================================================== */

/* DEV-A r3 ===================================================== */
/* Chữ phụ tối thiểu 14-16px, màu đậm */
:root{--fs-sm:1rem;--fs-xs:.9rem}
.xs{font-size:max(14px,.9rem)} .sm{font-size:max(15px,1rem)}
.muted,.field .hint,.setting small,.kpi .s,.meta,.card-foot{color:var(--fg);opacity:.82}
.field .hint,.setting small,.kpi .s,.meta,.card-foot{font-size:max(14px,.9rem)}
@media (max-width:900px){
  body[data-shell]:not([data-page="chat"]) main{padding-bottom:calc(96px + env(safe-area-inset-bottom))}
}
.composer-tools[hidden],[hidden].dlp-box,[hidden].gv-switch{display:none}

/* Một dòng cảnh báo mở rộng được */
/* Hộp đỏ dữ liệu nhạy cảm */
.dlp-box{border:3px solid var(--bad);background:var(--bad-soft);color:var(--fg)}
.dlp-box>b{color:var(--bad);font-size:1.15rem}
.dlp-ex{font-size:1.02rem;background:var(--surface);border-radius:8px;padding:8px 10px;border:1px dashed var(--bad)}
.dlp-big{min-height:56px;font-size:1.15rem;font-weight:700;padding:0 24px}
/* Chat: nút Gửi lớn, nút nguồn dễ bấm */
.export-bar .btn{min-height:44px}
@media (max-width:760px){
  .composer{position:sticky;bottom:0;z-index:5;padding-bottom:calc(8px + env(safe-area-inset-bottom))}
  .composer .send.round{min-width:104px;height:56px}
  .composer .cbtn{width:52px;height:52px}
}
/* Lịch sử */
.bulkbar{position:sticky;top:0;z-index:6;box-shadow:0 2px 8px rgb(0 0 0 / .15);border:1px solid var(--accent)}
.bulkbar .btn{min-height:44px}
.mdl-tag{white-space:nowrap}
/* Học tập */
.fold{border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.fold>summary{cursor:pointer;min-height:56px;display:flex;align-items:center;padding:0 16px;font-weight:700;font-size:1.1rem;font-family:var(--f-display)}
.fold>.panel{border:0;box-shadow:none;margin:0}
.gv-switch{margin:4px 0}
.note.integrity{background:var(--hl);color:var(--hl-fg);border:2px solid var(--hl-line);font-size:max(16px,1rem);display:grid;gap:8px}
.note.integrity .policy-line2{font-weight:500}
/* Đăng nhập */
.role-auto{min-height:28px;font-size:1.05rem;color:var(--fg)}
.role-auto.ok{color:var(--good);font-weight:700}
.auth input:focus,.auth select:focus,.auth-card .check:focus-within{outline:3px solid var(--accent);outline-offset:1px}
/* Tài khoản */
.prof-main{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:520px){.prof-main{grid-template-columns:1fr}}
/* Hạn mức */
.seg{display:flex;flex-wrap:wrap;gap:8px}
.seg .chip[aria-pressed="true"]{background:var(--accent);color:#fff;border-color:var(--accent)}
.sm-sentence{font-size:1.15rem}
.meter.good>i{background:var(--info,#1f5fbf)}
.req-row{display:flex;gap:10px;justify-content:space-between;align-items:center;flex-wrap:wrap;border:1px solid var(--line);border-radius:10px;padding:8px 12px}
.req-row .btn{min-height:48px}
.tag.bad{background:var(--bad-soft);color:var(--bad);font-weight:700}
.tag.warn{background:var(--warn-soft);color:var(--warn);font-weight:700}
.meter.bad>i{background:var(--bad)}
/* /DEV-A r3 ==================================================== */
/* DEV-B r3 ===================================================== */
.onb-r3 .onb-card{padding:18px;font-size:1.05rem}
.onb-r3 .onb-card h2{margin:0 0 6px;font-size:1.3rem}
.onb-r3 .onb-card p{margin:0 0 8px;line-height:1.5}
@media (max-width:600px){.onb-r3{align-items:flex-end!important;padding:8px!important;background:rgba(0,0,0,.25)!important}.onb-r3 .onb-card{max-height:42vh;overflow:auto;padding:14px;font-size:1rem}.onb-r3 .onb-card h2{font-size:1.15rem}.onb-r3 .onb-card .xs{display:none}}
.need-item{display:grid;gap:2px;padding:6px 0;border-bottom:1px dashed var(--line)}
.need-item:last-child{border-bottom:0}
#need{display:grid;gap:4px;font-size:1.05rem}
.start-btn{min-height:56px;font-size:1.2rem;color:#fff;position:relative;z-index:1}
.start-btn:not(.pri){color:var(--fg)}
.sk-tools{align-items:center;gap:12px;margin:8px 0}
.sk-search{flex:1;min-width:min(100%,260px);min-height:52px;font-size:1.1rem}
.mine-lg{grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.mine-lg .mine-btn{min-height:84px;padding:14px}
.mine-lg .mine-btn b{font-size:1.2rem;line-height:1.3}
.mine-lg .mine-btn span{font-size:1rem}
.all-box{margin-top:16px}
.all-box>summary{cursor:pointer;display:inline-flex;align-items:center;min-height:52px;font-size:1.1rem;margin-bottom:12px;list-style:none}
.chips-1row{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:8px;padding-bottom:6px;-webkit-overflow-scrolling:touch}
.chips-1row .chip{flex:0 0 auto;white-space:nowrap}
.sk-1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.ex-lg{font-size:1rem;line-height:1.5}
.todo-r3{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between}
.todo-r3 .due{color:var(--accent);margin-right:6px;white-space:nowrap}
.fname .fn-t{overflow-wrap:anywhere;word-break:break-word;white-space:normal}
#expBanner{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between}
.kmenu button{min-height:48px;font-size:1.05rem}
/* /DEV-B r3 ==================================================== */

/* gọn nguồn trích dẫn */
.src-more{position:relative}
.src-more summary{cursor:pointer;color:var(--accent);list-style:none;padding:4px 0;text-decoration:underline}
.src-more[open]>div{display:flex;flex-direction:column;align-items:flex-start;gap:2px;margin-top:4px}

/* =====================================================================
   Giao diện gọn (bản cuối): chữ cỡ thường, ít khối, nhiều khoảng trắng.
   Máy tính: gốc 15px, nút cao 32-36px. Điện thoại: gốc 16px, nút cao >= 42px.
   ===================================================================== */
:root{--fs-base:1rem;--fs-sm:.9333rem;--fs-xs:.8333rem;--fs-chat:1rem;--tap:42px}
h1{font-size:1.35rem;line-height:1.3} h2{font-size:1.1rem} h3{font-size:1rem} h4{font-size:.95rem}
.page{padding:24px 28px;gap:18px}
.page-head{gap:6px 16px} .page-head p{margin-top:2px}
.btn{min-height:42px;padding:6px 14px}
.btn.sm{min-height:36px;padding:2px 12px}
.btn.big{min-height:44px;padding:0 18px;font-size:var(--fs-sm);font-weight:600}
.chip{min-height:38px;padding:4px 14px;border-color:var(--line)}
.panel{padding:16px;gap:12px}
.note.big{font-size:var(--fs-sm)}
.fontbtn,.fontbtn[aria-pressed="true"]{border:0;background:none;color:var(--muted);font-weight:500;font-size:var(--fs-xs);min-height:34px;padding:0 6px;text-decoration:underline;border-radius:6px}
.fontbtn[aria-pressed="true"]{color:var(--accent)}
.topbar .fontbtn{display:none}
.help-fab{position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom));z-index:50;display:inline-flex;align-items:center;min-height:36px;padding:0 14px;border-radius:99px;background:var(--accent);color:#fff;font-weight:600;font-size:.875rem;box-shadow:0 2px 10px rgba(0,0,0,.25);text-decoration:none}

/* khối "to" cũ về cỡ thường */
.bigbtns{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:12px}
.bigbtn{display:grid;gap:2px;justify-items:start;border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:14px 16px;color:var(--fg);text-decoration:none;font-size:.9rem}
.bigbtn:hover{border-color:var(--accent);background:var(--accent-soft);text-decoration:none}
.bigbtn b{font-family:var(--f-display);font-size:1.05rem}
.bigbtn span{font-size:var(--fs-xs);line-height:1.4;opacity:.85}
.bigbtn .i{width:24px;height:24px;color:var(--accent)}
.bigbtn.pri{background:var(--accent);border-color:var(--accent);color:#fff}
.bigbtn.pri .i{color:#fff}.bigbtn.pri:hover{filter:brightness(1.08);background:var(--accent)}
.bigbtns.four{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.bigbtns.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
.dropzone,.dropzone.big,.dropzone.drag{border:1px dashed #b5aaaa;border-radius:12px;padding:18px;min-height:0;font-size:var(--fs-sm);gap:6px}
.dropzone b{font-weight:600}
.res-bar{gap:8px;margin:4px 0}
.big-sentence{font-family:var(--f-display);font-size:1.25rem;font-weight:600;line-height:1.3}
.big-switch{display:flex;justify-content:space-between;align-items:center;gap:16px;border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--surface-2)}
.big-switch b{font-size:1rem}
.need-item b{font-weight:600}
table.kq td,table.kq th{padding:8px 12px}
.help-lg{font-size:1rem}
.three-bars{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:12px}
.three-bars>div{border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:var(--surface)}
.three-bars h2{font-size:1.05rem;margin:0 0 6px}
.three-bars p{margin:0;font-size:var(--fs-sm);color:var(--fg)}
.three-bars .bar-ok h2{color:var(--good)}.three-bars .bar-no h2{color:var(--bad)}
details.adv>summary,.fold>summary{min-height:44px;font-size:1rem;font-weight:600}
.role-block summary h2{font-size:1.05rem}
.role-block[open]{border-color:var(--line)!important}
.prof-main{display:grid;grid-template-columns:auto auto;justify-content:start;gap:8px}
.prof-main .btn.big{min-height:40px}
.seg{display:flex;gap:6px;flex-wrap:wrap}

/* trang chủ, lịch sử, lọc */
.todo-r3 .btn{border:0;background:none;color:var(--accent);padding:0;min-height:0;text-decoration:underline;font-size:var(--fs-xs);margin-left:34px}
.todo-r3 label{flex:1 1 auto}
.todo-r3 .due{font-weight:600}
.todo,.recent{gap:10px}.home-grid{gap:16px}
.morebox>summary{list-style:none;cursor:pointer}.morebox>summary::-webkit-details-marker{display:none}
.morebox-in{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:8px}
.morebox[open]{flex-basis:100%}
.hcard .btn{border:0;background:none;color:var(--accent);min-height:34px;padding:0 10px;font-weight:600}
.hcard .btn:hover{background:var(--accent-soft)}
#hf,#hs{flex:1 1 150px}

/* chat */
.msg{font-size:var(--fs-chat);line-height:1.6}
.onewarn{max-width:860px;margin:0 auto 2px;width:100%;border:0;background:none;color:var(--muted)}
.onewarn>summary{cursor:pointer;min-height:28px;display:flex;align-items:center;gap:8px;padding:2px 4px;font-weight:400;font-size:var(--fs-xs);list-style:none}
.onewarn>summary::-webkit-details-marker{display:none}
.onewarn .ow-body{font-size:var(--fs-sm);padding:4px;display:grid;gap:6px;color:var(--fg)}
.composer .send.round{height:44px;min-width:84px;font-size:1rem}
.composer .cbtn{width:42px;height:42px}
.composer .cbtn .cl{display:none}
.composer .mpill{height:40px;font-size:var(--fs-sm)}
.composer .cbox textarea{font-size:1rem;min-height:44px}
.keys-hint,.composer-hint{display:none}
#sugs{display:none}
.msg-actions{gap:6px;margin-top:2px}
.msg-actions button{border:0;background:none;min-height:34px;padding:2px 10px;font-size:var(--fs-xs);color:var(--muted)}
.msg-actions button:hover{background:var(--surface-2);color:var(--fg)}
.msg-actions>button,.msg-actions>.kwrap{flex:0 0 auto}
.msg-actions .kmenu button{font-size:var(--fs-sm);color:var(--fg)}
.ans-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:var(--fs-xs);color:var(--muted)}
.turn-badge,.ans-meta details.more{font-size:var(--fs-xs);color:var(--muted)}
.mask-note{display:flex;gap:8px;align-items:center;border-left:4px solid var(--good);background:var(--good-soft);color:var(--fg);font-weight:600;font-size:var(--fs-sm);line-height:1.4;padding:8px 12px;border-radius:8px}
.mask-note .ok{flex:none;width:22px;height:22px;border-radius:50%;background:var(--good);color:#fff;display:grid;place-items:center;font-size:.8rem}
.src-acts{display:flex;gap:14px;align-items:center;flex-wrap:wrap;justify-content:flex-start;margin-top:4px}
.src-acts .btn{background:none;border:0;padding:4px 0;min-height:0;color:var(--accent);text-decoration:underline;font-weight:500;font-size:var(--fs-xs);flex:0 0 auto}
/* chat: màn trống */
.starters{max-width:860px;margin:0 auto;width:100%;display:grid;gap:14px;padding:8vh 0 0}
.starters h2{font-size:1.35rem}
.starters .mascot{justify-self:center;width:clamp(110px,22vw,180px);height:auto}
.starters h2,.starters>p{text-align:center}
.rolepick{display:inline-flex;align-items:center;gap:8px;font-size:var(--fs-xs);color:var(--muted)}
.rolepick select{min-height:34px;padding:2px 8px;font-size:var(--fs-sm)}
.starter-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,190px),1fr));gap:10px}
.starter{min-height:0;padding:12px 14px;border:1px solid var(--line);border-radius:12px;text-align:left;background:var(--surface);font-size:var(--fs-sm);line-height:1.4}
.starter b{font-weight:600;font-size:var(--fs-sm)}
.starter:hover{border-color:var(--accent);background:var(--accent-soft)}
.sidebar-quota .xs{display:none}

/* đăng nhập */
.auth-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px;display:grid;gap:14px;font-size:1rem}
.auth-card input{font-size:1rem;min-height:46px}
.auth-card .btn{min-height:46px;font-size:1rem}
.auth-card h1{font-size:1.35rem}
.auth-card .logo-img{height:56px}
.login-foot{text-align:center;line-height:1.5}
.role-note{font-size:var(--fs-xs);padding:6px 10px}

/* tệp, học tập */
.sens-hint,.privacy-note{display:none}
.file-days.days-big.soon{padding:1px 8px;font-size:var(--fs-xs)}
.files-tbl td .btn,.files-tbl td .btn.sm{min-height:32px;padding:0 10px;font-size:var(--fs-xs)}
.note.integrity{background:var(--surface-2);color:var(--fg);font-size:var(--fs-sm);border:0}
.note.integrity summary{cursor:pointer;line-height:1.5}
.note.integrity u{color:var(--accent)}
.note.integrity>div{margin-top:8px}
.snap-box{border-width:1px;padding:12px 16px}
.export-bar{border-width:1px;padding:10px}
.export-bar .btn{min-height:40px;font-size:var(--fs-sm);font-weight:500}

/* ---------- Máy tính: gọn hơn nữa ---------- */
@media (min-width:901px){
  html{font-size:15px}
  :root{--tap:34px}
  body{line-height:1.55}
  .page{padding:22px 32px;gap:16px}
  .btn{min-height:34px;padding:4px 14px}
  .btn.sm{min-height:30px;padding:2px 10px}
  .btn.big,.btn.wide{min-height:38px}
  .chip{min-height:32px;padding:2px 12px}
  .icon-btn{width:34px;height:34px}
  input:not([type=checkbox]):not([type=radio]),select{min-height:36px}
  input,select,textarea{padding:6px 10px}
  .check{min-height:30px}
  .nav a{min-height:36px;padding:6px 10px;font-size:.9333rem}
  .side{padding:12px;gap:10px}
  .side .btn{min-height:36px}
  .tabs button,.tabs a{min-height:30px;padding:4px 12px}
  .help-fab{min-height:32px}
  .composer .send.round{height:38px;min-width:76px}
  .composer .cbtn{width:38px;height:38px}
  .composer .mpill{height:38px}
  .composer .cbox textarea{min-height:38px;height:38px;padding:7px 6px;line-height:24px}
  .msg-actions button{min-height:30px}
  .hcard .btn{min-height:30px}
  .todo-r3 .btn{min-height:0}
  .auth-card input,.auth-card .btn{min-height:40px}
  .dropzone,.dropzone.big,.dropzone.drag{padding:14px}
  .bigbtn{padding:12px 14px}
  .starters{padding-top:10vh}
  .sugs .chip{min-height:30px}
  .panel{padding:14px}
  th,td{padding:8px 12px}
  .kpi{padding:12px}
  .modal{padding:16px}
  .fontbtn,.fontbtn[aria-pressed="true"]{min-height:28px}
  .onb-card{padding:18px}
  .onb-foot .btn.pri,.onb-card .btn{min-height:38px}
}
/* ---------- Điện thoại ---------- */
@media (max-width:640px){
  .page{padding:14px 16px 90px;gap:14px}
  .btn,.chip{min-height:42px}
  .composer .mp-k{display:none}
  .composer .cbox{flex-wrap:wrap}
  .composer .cbox textarea{flex:1 1 100%}
  .composer .mpill{order:8;margin-left:auto}
  .snap-box{flex-direction:column;align-items:stretch}
  .snap-box .btn{width:100%}
  .prof-main{grid-template-columns:1fr 1fr}
  .files-tbl td.fname{display:block;text-align:left}
  .files-tbl td.fname::before,.files-tbl td[data-label="Nguồn"]::before{content:none}
  .files-tbl td[data-label="Nguồn"]{justify-content:flex-start;flex-wrap:wrap;text-align:left}
  .starters{padding-top:4vh}
  .hide-m{display:none}
}/* chat: cột nội dung 860px ở giữa */
.msgs{padding-left:max(16px,calc((100% - 860px)/2));padding-right:max(16px,calc((100% - 860px)/2))}
.msgs .msg{max-width:100%}.msgs .msg.me{max-width:min(100%,640px)}
@media (min-width:901px){#hf,#hs{flex:0 1 220px}}@media (max-width:640px){#pExp,label[for="pImp"]{display:none}}#expBanner{background:var(--warn-soft);border:0;border-radius:10px;padding:8px 14px;font-size:var(--fs-sm);display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
#expBanner .btn{min-height:32px}
/* ---------- Màn FHD hay bật co giãn 125-150% (viewport ~1280-1536px): sidebar mảnh, chữ nhỏ hơn ---------- */
@media (min-width:901px){
  html{font-size:14px}
  .shell{grid-template-columns:208px minmax(0,1fr)}
  .side{padding:10px 8px;gap:6px}
  .side>.brand,.side .brand{gap:8px}
  .nav{gap:0}
  .nav a{min-height:30px;padding:4px 8px;font-size:.93rem}
  .nav .grp{margin:8px 8px 2px;font-size:.72rem}
  .side .btn{min-height:32px}
  .nav a .nl{gap:8px}
}
/* ---------- Chữ nhỏ lại (người dùng: chữ to quá) ---------- */
@media (min-width:901px){
  html{font-size:13px}
  :root{--fs-base:13px;--fs-sm:.95rem;--fs-xs:.85rem;--fs-chat:1rem}
  body{font-size:13px}
  .nav a{font-size:13px;min-height:28px}
  .btn,.chip,.cbtn,.mpill{font-size:13px}
  h1{font-size:18px} h2{font-size:15px} h3{font-size:14px}
  .composer textarea,.composer .cbox textarea,input,select,textarea{font-size:13px}
  .msg,.msg p,.bubble{font-size:13.5px}
}
/* Thanh bên: một cỡ chữ thống nhất (trước đây mỗi khối một cỡ) */
@media (min-width:901px){
  .side,.side *{font-size:13px!important;line-height:1.4}
  .side .grp,.side .label,.side h3,.side .nav .grp{font-size:11px!important;letter-spacing:.04em}
  .side .brand b,.side .brand strong,.side .brand-name{font-size:14px!important}
  .side .xs,.side small,.side .muted{font-size:12px!important}
  .composer textarea::placeholder,.composer .cbox textarea::placeholder{font-size:13px}
  .composer .cbox textarea,.composer .ctags,.composer .ctags *,.composer .mpill,.composer .send{font-size:13px!important}
}
/* Thang chữ duy nhất cho máy tính: mọi thứ 13px, chỉ tiêu đề/chữ phụ khác */
@media (min-width:901px){
  body *{font-size:13px!important;line-height:1.45}
  body h1,body h1 *{font-size:18px!important}
  body h2,body h2 *{font-size:15px!important}
  body h3,body h4,body h3 *{font-size:14px!important}
  body .xs,body small,body .label,body .tag,body .hint,body .src-tags *,body .sm.muted,body .grp,body th{font-size:12px!important}
  body .grp{font-size:11px!important}
  body .btn.pri,body .btn.big{font-size:13px!important;font-weight:600}
}
/* Thanh bên: nhịp giãn đều (hàng 30px, nhóm cách nhau 14px) */
@media (min-width:901px){
  .side{gap:0;padding:12px 8px}
  .side>*{margin:0}
  .side>.row.spread:first-child{margin:-12px -8px 0}
  .side>.newbtn{margin-top:12px}
  .side .nav{gap:2px;margin-top:10px}
  .side .nav a,.side .hist li.hi{min-height:30px;height:30px;padding:0 10px;margin:0;display:flex;align-items:center;border-radius:6px}
  .side .hist{margin:0;padding:0;list-style:none;display:grid;gap:2px}
  .side .hist li.hi>a{flex:1;min-width:0;padding:0;min-height:0;height:auto;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .side .hist li.hi>a span{display:block;overflow:hidden;text-overflow:ellipsis}
  .side .grid.gap-sm{gap:4px;margin-top:14px}
  .side .label,.side .nav .grp{margin:0 10px;padding:0}
  .side .nav .grp{margin:16px 10px 4px}
  .side .nav .grp:first-child{margin-top:4px}
  .side .sidebar-quota,.side .quota{margin-top:auto}
}
/* Cuộc trò chuyện đang mở: tô nền cả hàng, cùng kiểu với mục menu */
@media (min-width:901px){
  .side .hist li.hi>a.on,.side .hist li.hi>a[aria-current]{background:transparent;color:var(--accent);font-weight:600}
  .side .hist li.hi:has(>a.on),.side .hist li.hi:has(>a[aria-current]){background:var(--accent-soft)}
  .side .hist li.hi:hover{background:var(--surface-2)}
  .side .hist li.hi:has(>a.on):hover{background:var(--accent-soft)}
}
/* Nút Bắt đầu trong thẻ mẫu việc: gọn */
.card.sk .card-foot .btn{min-height:26px;padding:2px 12px;font-size:.85rem;line-height:1.2}

@media (min-width:901px){
  table.tbl-compact th,table.tbl-compact td{padding:4px 12px}
  table.tbl-compact td .btn,table.tbl-compact td .btn.sm{min-height:26px;padding:0 10px}
  table.tbl-compact .tag{padding-top:1px;padding-bottom:1px}
}

details.org-block>summary{cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:36px;list-style:none}
details.org-block>summary::-webkit-details-marker{display:none}
details.org-block>summary h2{margin:0}
details.org-block>summary::after{content:'▾';color:var(--muted);transition:transform .15s}
details.org-block[open]>summary::after{transform:rotate(180deg)}

/* Mobile: khoảng cách trên/dưới đường kẻ header thanh bên bằng nhau */
@media (max-width:900px){
  .side{gap:12px}
  .side>.row.spread:first-child{padding-bottom:12px}
  .side>.newbtn{margin-top:0}
}
/* Mobile: khối tài khoản luôn dính đáy thanh bên */
@media (max-width:900px){
  .side{padding-bottom:0}
  .side>.me-box{position:sticky;bottom:0;z-index:1;background:var(--surface);padding-bottom:calc(12px + env(safe-area-inset-bottom))}
}

/* ---- Lịch sử: thẻ gọn, nút hành động nằm dưới ---- */
.hlist>.hcard{grid-template-columns:minmax(0,1fr);gap:8px;padding:12px 14px;align-items:stretch}
.hlist>.hcard>a.hmain{grid-column:1;grid-row:auto;gap:4px;padding:0}
.hlist>.hcard .t{font-size:1.02rem;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hlist>.hcard .s{font-size:.88rem;line-height:1.4}
.hcard .hrow{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:8px}
.hcard .hacts{display:flex;align-items:center;gap:4px;margin-left:auto}
.hcard .hacts form{margin:0}
.hcard .hacts .btn.sm{min-height:36px;padding:0 12px;font-size:.92rem;border-radius:8px}
.hcard .hacts .btn.danger{color:var(--bad)}
.hcard .hacts .btn.open{background:var(--accent);color:#fff;margin-left:4px}
.hcard .hacts .btn.open:hover{background:var(--accent);opacity:.9}
@media (max-width:600px){
  .hhead .search,.hhead form{width:100%}
  .hsort,.hsort form,.hsort select{width:100%}
  .hlist{gap:12px}
}
/* Thẻ tệp đính kèm: tên dài (không có khoảng trắng) không được đẩy khung soạn tin rộng quá màn hình */
.composer,.composer .cbox,.ctags{min-width:0}
.composer,.ctags{max-width:100%}
.chip-x{max-width:100%;min-width:0}
.chip-x .chip-t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.chip-x button,.chip-x .spin{flex:none}
/* Đầu sidebar: tên dài (vd. TVOI - Trung Vuong Open Intelligence) xuống tối đa 2 dòng, nút đóng/thu gọn luôn cùng hàng */
.side>.row.spread:first-child{flex-wrap:nowrap}
.side .brand{flex:1 1 auto;min-width:0}
.side .brand>div{min-width:0}
.side .brand [data-brand-name]{display:block;text-wrap:balance;line-height:1.25;overflow-wrap:anywhere}
.side>.row.spread:first-child>.icon-btn{flex:none}

/* Toast nhỏ, góc phải màn hình (không popup giữa) */
.toast-box{left:auto;right:16px;transform:none;width:min(300px,calc(100% - 32px))}
.toast{font-size:.85rem;padding:9px 12px;border-left-width:4px}