:root{
  --maroon:#5e1627;--wine:#340c17;--gold:#e2b04e;--ink:#1d1a1b;--muted:#6d6667;--line:#e2dedd;
  --bg:#f5f3f2;--card:#fff;--ok:#2f6b3b;--warn:#9a5b06;--bad:#a0262f;
  --sans:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif;--serif:"Fraunces",Georgia,serif;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 var(--sans)}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--maroon)}
.boot{padding:40px;text-align:center;color:var(--muted)}
.hide{display:none!important}

/* ---------- đăng nhập */
.login{min-height:100vh;display:grid;place-items:center;padding:16px;background:var(--wine)}
.login form{background:var(--card);width:100%;max-width:380px;padding:32px 28px;border-radius:14px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.login h1{font:500 1.9rem/1.1 var(--serif);color:var(--maroon);margin:0 0 4px}
.login p.sub{color:var(--muted);margin:0 0 22px}
.login .btn{width:100%;margin-top:8px}

/* ---------- khung */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;padding:10px 18px;background:var(--wine);color:#fff}
.top .brand{font:500 1.35rem var(--serif);color:var(--gold);white-space:nowrap}
.top .brand small{font:400 .8rem var(--sans);color:#d9c9cc;margin-left:8px}
.top .status{margin-left:auto;font-size:.85rem;color:#e8dadd;white-space:nowrap}
.top .status.dirty{color:var(--gold)}
.top .acts{display:flex;gap:8px}
.top .who{font-size:.85rem;color:#d9c9cc}
.shell{display:grid;grid-template-columns:230px 1fr;min-height:calc(100vh - 56px)}
.side{background:#fff;border-right:1px solid var(--line);padding:14px 10px;position:sticky;top:56px;height:calc(100vh - 56px);overflow:auto}
.side a{display:block;padding:8px 12px;border-radius:8px;color:var(--ink);text-decoration:none}
.side a:hover{background:var(--bg)}
.side a.on{background:var(--maroon);color:#fff}
.side .grp{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:14px 12px 4px}
.side a.sub{padding-left:24px;font-size:.92rem}
.main{padding:24px clamp(16px,3vw,40px) 80px;max-width:1040px;width:100%}
.main h1{font:500 1.8rem/1.2 var(--serif);margin:0 0 4px;color:var(--maroon)}
.main .lede{color:var(--muted);margin:0 0 22px}
.mnav{display:none}

/* ---------- thẻ & ô nhập */
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin:0 0 18px}
.card>h2{font:600 1.05rem var(--sans);margin:0 0 4px}
.card>.hint{color:var(--muted);font-size:.88rem;margin:0 0 14px}
details.card>summary{cursor:pointer;font-weight:600;list-style:none;display:flex;align-items:center;gap:10px}
details.card>summary::before{content:"▸";color:var(--maroon);transition:transform .15s}
details.card[open]>summary::before{transform:rotate(90deg)}
details.card[open]>summary{margin-bottom:14px}
summary .tag{font-weight:400;font-size:.8rem;color:var(--muted)}
.f{margin:0 0 14px}
.f>label,.f>.lb{display:block;font-weight:500;font-size:.9rem;margin:0 0 5px}
.f .hint{display:block;color:var(--muted);font-size:.82rem;margin-top:4px}
input[type=text],input[type=password],input[type=date],input[type=url],input[type=number],select,textarea{
  width:100%;padding:9px 11px;border:1px solid #cfc9c8;border-radius:8px;background:#fff;outline:none}
input:focus,select:focus,textarea:focus,.rte .ed:focus{border-color:var(--maroon);box-shadow:0 0 0 3px rgba(94,22,39,.12)}
textarea{resize:vertical;min-height:70px}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0 16px}
.chk{display:flex;align-items:center;gap:8px;font-weight:500}
.chk input{width:18px;height:18px;accent-color:var(--maroon)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:8px;border:1px solid var(--maroon);
  background:var(--maroon);color:#fff;font-weight:500;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{background:var(--wine)}
.btn.gold{background:var(--gold);border-color:var(--gold);color:var(--wine)}
.btn.gold:hover{background:#d39f3b}
.btn.ghost{background:transparent;color:var(--maroon)}
.btn.ghost:hover{background:rgba(94,22,39,.06)}
.top .btn.ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.top .btn.ghost:hover{background:rgba(255,255,255,.1)}
.btn.sm{padding:5px 10px;font-size:.85rem}
.btn.danger{background:#fff;color:var(--bad);border-color:#e3b8bc}
.btn.danger:hover{background:#fbeeef}
.btn[disabled]{opacity:.55;cursor:wait}
.iconbtn{border:1px solid var(--line);background:#fff;border-radius:6px;width:30px;height:30px;cursor:pointer;color:var(--muted);flex:none}
.iconbtn:hover{color:var(--maroon);border-color:var(--maroon)}

/* ---------- danh sách */
.list>.item{border:1px solid var(--line);border-radius:10px;padding:14px 14px 4px;margin:0 0 10px;background:#fcfbfb;position:relative}
.list>.item>.tools{position:absolute;top:8px;right:8px;display:flex;gap:4px}
.list>.item>.tools+*{margin-right:110px}
.list .add{margin-top:2px}
.inline{display:flex;gap:8px;align-items:center;margin:0 0 8px}
.inline>input,.inline>textarea{flex:1}

/* ---------- ảnh */
.imgf{display:flex;gap:12px;align-items:center}
.imgf .th{width:96px;height:72px;border-radius:8px;background:#eee center/cover no-repeat;border:1px solid var(--line);flex:none}
.imgf .nm{font-size:.85rem;color:var(--muted);word-break:break-all}
.gal{display:flex;flex-wrap:wrap;gap:10px}
.gal .g{width:118px}
.gal .g .th{width:118px;height:118px;border-radius:8px;background:#eee center/cover no-repeat;border:1px solid var(--line);position:relative}
.gal .g .th b{position:absolute;left:6px;top:6px;background:var(--gold);color:var(--wine);font-size:.7rem;padding:1px 6px;border-radius:10px}
.gal .g .bt{display:flex;justify-content:center;gap:4px;margin-top:4px}
.gal .addg{width:118px;height:118px;border:2px dashed #cfc9c8;border-radius:8px;display:grid;place-items:center;color:var(--muted);cursor:pointer;background:none;text-align:center;font-size:.85rem}
.gal .addg:hover{border-color:var(--maroon);color:var(--maroon)}

/* ---------- hộp thoại */
dialog{border:0;border-radius:14px;padding:0;max-width:min(940px,calc(100vw - 24px));width:100%;box-shadow:0 30px 80px rgba(0,0,0,.35)}
dialog::backdrop{background:rgba(30,10,15,.55)}
dialog .dh{display:flex;align-items:center;gap:10px;padding:16px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}
dialog .dh h2{margin:0;font:500 1.3rem var(--serif);flex:1}
dialog .db{padding:18px 20px;max-height:70vh;overflow:auto}
dialog .df{display:flex;justify-content:flex-end;gap:8px;padding:14px 20px;border-top:1px solid var(--line)}
.pick{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
.pick button{border:2px solid transparent;padding:0;background:none;cursor:pointer;border-radius:8px;text-align:left}
.pick button:hover,.pick button.on{border-color:var(--maroon)}
.pick .th{aspect-ratio:1;border-radius:6px;background:#eee center/cover no-repeat}
.pick span{display:block;font-size:.72rem;color:var(--muted);padding:3px 2px;word-break:break-all}
.errs{margin:0;padding-left:20px;color:var(--bad)}

/* ---------- soạn bài */
.rte{border:1px solid #cfc9c8;border-radius:8px;background:#fff}
.rte .tb{display:flex;flex-wrap:wrap;gap:4px;padding:6px;border-bottom:1px solid var(--line);position:sticky;top:56px;background:#faf8f8;border-radius:8px 8px 0 0;z-index:3}
.rte .tb button{border:1px solid transparent;background:none;border-radius:6px;padding:4px 9px;cursor:pointer;font-size:.85rem}
.rte .tb button:hover{background:#fff;border-color:var(--line)}
.rte .ed{min-height:320px;padding:14px 18px;outline:none;border-radius:0 0 8px 8px;line-height:1.7}
.rte .ed h2{font:500 1.4rem var(--serif);margin:1.2em 0 .4em}
.rte .ed h3{font-size:1.05rem;margin:1em 0 .3em}
.rte .ed .callout{background:#f6efe2;border-left:3px solid var(--gold);padding:10px 16px;margin:1em 0;border-radius:6px}
.rte .ed a{color:var(--maroon)}
.rte textarea{border:0;border-radius:0 0 8px 8px;min-height:320px;font:13px/1.5 ui-monospace,Menlo,monospace}

/* ---------- thông báo */
.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 18px;border-radius:10px;z-index:100;box-shadow:0 10px 30px rgba(0,0,0,.25);max-width:calc(100vw - 32px)}
.toast.ok{background:var(--ok)}.toast.bad{background:var(--bad)}
.note{background:#f6efe2;border:1px solid #ecd9b4;border-radius:10px;padding:12px 16px;margin:0 0 18px;font-size:.92rem}
table.t{width:100%;border-collapse:collapse}
table.t td{padding:9px 6px;border-bottom:1px solid var(--line);vertical-align:middle}
table.t td:last-child{text-align:right}
.swatch{width:38px;height:38px;padding:2px;border:1px solid var(--line);border-radius:8px;flex:none;background:#fff}

@media (max-width:1180px){
  .top{flex-wrap:wrap}
  .top .status{order:3;margin-left:0;width:100%;font-size:.8rem}
  .top .acts{margin-left:auto}
  .side{top:96px;height:calc(100vh - 96px)}
}
/* ---------- điện thoại */
@media (max-width:820px){
  .shell{grid-template-columns:1fr}
  .side{display:none}
  .mnav{display:block;margin:0 0 18px}
  .top{flex-wrap:wrap;padding:10px 14px}
  .top .status{order:3;margin-left:0;width:100%}
  .top .acts{margin-left:auto}
  .top .who{display:none}
  .top .acts .btn{padding:7px 11px;font-size:.85rem}
  .list>.item>.tools+*{margin-right:0;margin-top:30px}
  .rte .tb{top:96px}
}