/* =====================================================================
 * assets/bt.css — MODULE "BẢNG TIN" (mạng xã hội nội bộ) — DIP 1.5
 * Prefix bt-. Dùng biến palette chung. KHÔNG color-mix. Thẻ đồng cao,
 * chống vỡ dòng, phong cách News Feed hiện đại.
 * ===================================================================== */
.bt-wrap{max-width:680px;margin:0 auto}
.bt-wrap.wide{max-width:1180px}

/* Bố cục 2 cột: feed (trái) + cột phụ (phải) — lấp đầy chiều rộng trang */
.bt-shell{display:flex;gap:24px;align-items:flex-start;justify-content:center;max-width:1120px;margin:0 auto}
.bt-main{flex:1 1 680px;min-width:0;max-width:700px}
.bt-side{flex:0 0 320px;width:320px;position:sticky;top:14px;display:flex;flex-direction:column;gap:14px}
.bt-scard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:0 1px 2px rgba(8,28,52,.04)}
.bt-scard-h{font-size:13px;font-weight:800;color:var(--navy);margin-bottom:11px}
.bt-stat3{display:flex;gap:8px}
.bt-stat3>div{flex:1;background:var(--bg);border-radius:11px;padding:10px 6px;text-align:center}
.bt-stat3 b{display:block;font-size:20px;font-weight:800;color:var(--navy);line-height:1;font-variant-numeric:tabular-nums}
.bt-stat3 span{font-size:11px;color:var(--muted)}
.bt-hot{display:flex;flex-direction:column}
.bt-hot-it{display:flex;gap:9px;align-items:flex-start;padding:9px 0;text-decoration:none;border-top:1px solid #f0f3f7}
.bt-hot-it:first-child{border-top:0;padding-top:0}
.bt-hot-it .cdot{flex:0 0 8px;width:8px;height:8px;border-radius:50%;margin-top:5px}
.bt-hot-it .tx{min-width:0}
.bt-hot-it .nd{font-size:12.5px;font-weight:600;color:var(--navy);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bt-hot-it .mt{display:block;font-size:11px;color:var(--muted);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bt-hot-it:hover .nd{color:var(--blue)}
.bt-tips{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.bt-tips li{font-size:12.5px;color:var(--ink);line-height:1.5;padding-left:16px;position:relative}
.bt-tips li::before{content:"›";position:absolute;left:3px;top:-1px;color:var(--blue);font-weight:800}
@media(max-width:980px){.bt-shell{flex-direction:column;max-width:700px}.bt-side{position:static;width:100%;flex:1 1 auto}}

/* HERO / GIỚI THIỆU CỘT PHẢI (layout 2 cột tùy chọn) */
.bt-hero{position:relative;overflow:hidden;border-radius:18px;padding:22px 24px;color:#fff;margin-bottom:18px;
  background:linear-gradient(135deg,var(--navy) 0%,var(--blue) 110%)}
.bt-hero h1{margin:0 0 5px;font-size:21px;letter-spacing:-.3px}
.bt-hero p{margin:0;font-size:13px;opacity:.9;line-height:1.55;max-width:60ch}

/* AVATAR */
.bt-av{flex:0 0 auto;width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:16px;overflow:hidden;background-size:cover;background-position:center}
.bt-av.sm{width:34px;height:34px;font-size:13px}

/* Ô SOẠN BÀI */
.bt-compose{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:16px;box-shadow:0 1px 2px rgba(8,28,52,.04)}
.bt-compose-top{display:flex;gap:11px;align-items:center}
.bt-compose-top .fake{flex:1;min-width:0;height:42px;border:0;border-radius:21px;background:var(--bg);padding:0 18px;font-size:14px;color:var(--muted);cursor:text;display:flex;align-items:center}
.bt-compose-box{display:none}
.bt-compose-box.open{display:block}
.bt-compose textarea{width:100%;box-sizing:border-box;border:1px solid var(--line);border-radius:11px;padding:11px 13px;font-size:14.5px;line-height:1.55;resize:vertical;min-height:84px;font-family:inherit}
.bt-compose textarea:focus{outline:none;border-color:var(--blue)}
.bt-compose-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:10px}
.bt-compose-row select{height:38px;border:1px solid var(--line);border-radius:9px;padding:0 11px;font-size:13px;background:#fff;width:auto}
.bt-compose .lbl-file{display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 13px;border:1px solid var(--line);border-radius:9px;font-size:13px;font-weight:600;color:var(--green);cursor:pointer;background:#fff}
.bt-compose .lbl-file input{display:none}
.bt-compose .sp{flex:1}
.bt-compose .btn-dang{height:38px;padding:0 22px;border:0;border-radius:9px;background:var(--blue);color:#fff;font-weight:700;font-size:14px;cursor:pointer}
.bt-compose .btn-dang:disabled{opacity:.5;cursor:not-allowed}
.bt-preview{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.bt-preview img{width:74px;height:74px;object-fit:cover;border-radius:9px;border:1px solid var(--line)}

/* THẺ BÀI ĐĂNG */
.bt-post{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:16px;box-shadow:0 1px 2px rgba(8,28,52,.04);overflow:hidden}
.bt-post-h{display:flex;align-items:flex-start;gap:11px;padding:14px 16px 8px}
.bt-post-h .who{flex:1;min-width:0}
.bt-post-h .nm{font-size:14.5px;font-weight:800;color:var(--navy);line-height:1.25;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.bt-post-h .nm .pin{font-size:12px;color:var(--gold)}
.bt-post-h .sub{font-size:12px;color:var(--muted);margin-top:1px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.bt-post-h .sub .dot{opacity:.5}
.bt-cat{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:800;padding:2px 9px;border-radius:11px;color:#fff;white-space:nowrap}
.bt-post-menu{position:relative;flex:0 0 auto}
.bt-post-menu .dots{border:0;background:transparent;font-size:18px;color:var(--muted);cursor:pointer;width:32px;height:32px;border-radius:50%;line-height:1}
.bt-post-menu .dots:hover{background:var(--bg)}
.bt-post-menu .pop{position:absolute;right:0;top:34px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 30px -12px rgba(8,28,52,.35);min-width:150px;z-index:20;display:none;overflow:hidden}
.bt-post-menu.open .pop{display:block}
.bt-post-menu .pop button{display:block;width:100%;text-align:left;border:0;background:#fff;padding:10px 14px;font-size:13px;color:var(--navy);cursor:pointer}
.bt-post-menu .pop button:hover{background:var(--bg)}
.bt-post-menu .pop button.del{color:var(--red)}
.bt-post-body{padding:2px 16px 12px;font-size:14.5px;line-height:1.62;color:var(--ink);white-space:pre-wrap;word-break:break-word}
.bt-imgs{display:grid;gap:3px}
.bt-imgs.n1{grid-template-columns:1fr}
.bt-imgs.n2,.bt-imgs.n4{grid-template-columns:1fr 1fr}
.bt-imgs.n3,.bt-imgs.nx{grid-template-columns:1fr 1fr 1fr}
.bt-imgs a{display:block;position:relative;overflow:hidden}
.bt-imgs img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:1/1}
.bt-imgs.n1 img{aspect-ratio:16/10;max-height:460px}
.bt-imgs .more{position:absolute;inset:0;background:rgba(14,42,71,.6);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800}

/* THANH SỐ LIỆU */
.bt-meta{display:flex;align-items:center;justify-content:space-between;padding:9px 16px;font-size:12.5px;color:var(--muted);border-top:1px solid #f0f3f7}
.bt-meta .rx{display:flex;align-items:center;gap:5px}
.bt-meta .rx .em{display:inline-flex;align-items:center}
.bt-meta .rx .em span{font-size:15px;margin-left:-4px;filter:drop-shadow(0 0 1px #fff)}
.bt-meta .rx .em span:first-child{margin-left:0}

/* THANH HÀNH ĐỘNG */
.bt-acts{display:flex;border-top:1px solid #f0f3f7;border-bottom:1px solid #f0f3f7}
.bt-act{position:relative;flex:1;display:flex;align-items:center;justify-content:center;gap:7px;padding:9px;border:0;background:#fff;cursor:pointer;font-size:13.5px;font-weight:700;color:var(--muted)}
.bt-act:hover{background:var(--bg)}
.bt-act.on{color:var(--blue)}
.bt-act .ic{font-size:17px}
/* bộ chọn cảm xúc */
.bt-react-pop{position:absolute;left:8px;bottom:46px;background:#fff;border:1px solid var(--line);border-radius:30px;padding:6px 10px;display:flex;gap:4px;box-shadow:0 12px 30px -10px rgba(8,28,52,.4);opacity:0;visibility:hidden;transform:translateY(6px);transition:.15s;z-index:25}
.bt-act-like:hover .bt-react-pop,.bt-react-pop:hover,.bt-react-pop.show{opacity:1;visibility:visible;transform:translateY(0)}
.bt-react-pop b{font-size:26px;cursor:pointer;line-height:1;transition:transform .12s;display:inline-block}
.bt-react-pop b:hover{transform:scale(1.3) translateY(-3px)}

/* BÌNH LUẬN */
.bt-cmts{padding:8px 16px 14px;display:none}
.bt-cmts.open{display:block}
.bt-cmt{display:flex;gap:9px;margin-top:11px;align-items:flex-start}
.bt-cmt.reply{margin-left:42px}
.bt-cmt .bub{background:var(--bg);border-radius:14px;padding:8px 13px;min-width:0;max-width:100%}
.bt-cmt .bub .nm{font-size:12.5px;font-weight:800;color:var(--navy);line-height:1.2}
.bt-cmt .bub .nm small{font-weight:500;color:var(--muted);margin-left:5px}
.bt-cmt .bub .txt{font-size:13.5px;color:var(--ink);line-height:1.5;margin-top:2px;word-break:break-word;white-space:pre-wrap}
.bt-cmt .ft{display:flex;gap:14px;margin:3px 0 0 13px;font-size:11.5px;color:var(--muted)}
.bt-cmt .ft button{border:0;background:transparent;color:var(--muted);font-weight:700;cursor:pointer;font-size:11.5px;padding:0}
.bt-cmt .ft button:hover{text-decoration:underline}
.bt-cmt .ft button.del{color:var(--red)}
.bt-cmt-form{display:flex;gap:9px;align-items:center;margin-top:12px}
.bt-cmt-form .inwrap{flex:1;display:flex;align-items:center;background:var(--bg);border-radius:20px;padding:3px 5px 3px 14px;min-width:0}
.bt-cmt-form input{flex:1;border:0;background:transparent;outline:none;font-size:13.5px;padding:8px 0;color:var(--ink);min-width:0}
.bt-cmt-form button{flex:0 0 auto;border:0;background:var(--blue);color:#fff;width:34px;height:34px;border-radius:50%;cursor:pointer;font-size:15px}
.bt-cmt-empty{font-size:12.5px;color:var(--muted);text-align:center;padding:6px}

/* TRỐNG / NHẮC ĐĂNG NHẬP */
.bt-empty{background:#fff;border:1px solid var(--line);border-radius:14px;padding:46px 24px;text-align:center;color:var(--muted)}
.bt-empty .ic{font-size:40px;display:block;margin-bottom:10px;opacity:.5}
.bt-login{background:#fff;border:1px dashed var(--line);border-radius:14px;padding:18px;text-align:center;margin-bottom:16px;font-size:13.5px;color:var(--muted)}
.bt-login a{color:var(--blue);font-weight:700;text-decoration:none}

/* LỌC NHANH DANH MỤC */
.bt-cats{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.bt-cats a{display:inline-flex;align-items:center;gap:6px;text-decoration:none;font-size:12.5px;font-weight:700;padding:7px 13px;border-radius:20px;border:1px solid var(--line);background:#fff;color:var(--navy);white-space:nowrap}
.bt-cats a.on{color:#fff;border-color:transparent}

/* ===== QUẢN TRỊ ===== */
.pd-wrap.bt-admin{max-width:1180px}
.bt-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:18px 0}
.bt-kpi{background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px 16px;display:flex;flex-direction:column;gap:4px;border-top:3px solid var(--blue)}
.bt-kpi.k2{border-top-color:var(--green)} .bt-kpi.k3{border-top-color:var(--gold)} .bt-kpi.k4{border-top-color:var(--red)}
.bt-kpi .n{font-size:25px;font-weight:800;color:var(--navy);line-height:1;font-variant-numeric:tabular-nums}
.bt-kpi .l{font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bt-atable{width:100%;border-collapse:collapse;font-size:13.5px;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.bt-atable th,.bt-atable td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
.bt-atable th{background:var(--bg);font-size:11.5px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.bt-atable tr:last-child td{border-bottom:0}
.bt-atable tr:hover td{background:#fafcff}
.bt-atable .ndung{max-width:420px;color:var(--ink)}
.bt-atable .ndung .clip{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.45}
.bt-atable .acts{white-space:nowrap;text-align:right}
.bt-atable .acts a{font-size:12.5px;font-weight:600;text-decoration:none;color:var(--blue);margin-left:10px}
.bt-atable .acts a.del{color:var(--red)}
.bt-subnav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.bt-subnav a{display:inline-flex;align-items:center;gap:7px;text-decoration:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 14px;color:var(--navy);font-weight:700;font-size:13px}
.bt-subnav a.on{background:var(--navy);border-color:var(--navy);color:#fff}

@media(max-width:980px){.bt-kpis{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){
  .bt-atable thead{display:none}
  .bt-atable,.bt-atable tbody,.bt-atable tr,.bt-atable td{display:block;width:100%;box-sizing:border-box}
  .bt-atable tr{border:1px solid var(--line);border-radius:11px;margin-bottom:10px;padding:6px 4px}
  .bt-atable .ndung{max-width:none}
  .bt-atable .acts{text-align:left}.bt-atable .acts a{margin:0 12px 0 0}
}

/* ===== Bộ lọc & pill dùng chung cho trang quản trị Bảng tin (tự chứa) ===== */
.bt-admin .pd-filter{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:16px}
.bt-admin .pd-filter .fld{display:flex;flex-direction:column;gap:4px;min-width:0}
.bt-admin .pd-filter .fld label{font-size:11.5px;font-weight:700;color:var(--muted)}
.bt-admin .pd-filter input,.bt-admin .pd-filter select{height:40px;border:1px solid var(--line);border-radius:9px;padding:0 11px;font-size:13.5px;background:#fff;max-width:230px;width:auto}
.bt-admin .pd-filter .fld.grow{flex:1}
.bt-admin .pd-filter .fld.grow input{width:100%;max-width:none}
.bt-admin .pd-filter .acts{display:flex;gap:8px}
.bt-admin .pd-filter .btn-loc{height:40px;padding:0 16px;border:0;border-radius:9px;background:var(--blue);color:#fff;font-weight:700;font-size:13.5px;cursor:pointer;white-space:nowrap}
.bt-admin .pd-filter .btn-xoa{height:40px;padding:0 14px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--muted);font-weight:600;font-size:13.5px;text-decoration:none;display:inline-flex;align-items:center;white-space:nowrap}
.bt-admin .pd-pill{display:inline-flex;align-items:center;font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:20px;color:#fff;white-space:nowrap}
.bt-admin .ct{text-align:center}