/* ============================================================
   FLEXING DATA — Blog theme
   Built on the homepage palette + card/button language so the
   blog reads as the same site. Header/footer come from fd-shell.css.
   All classes are bk-* prefixed to avoid any clash.
   ============================================================ */
:root{
  --paper:#fffaf4; --paper-2:#fff3e9; --white:#ffffff;
  --ink:#18222f; --ink-2:#44515f; --muted:#6c7785;
  --line:rgba(24,34,47,.09); --line-soft:rgba(24,34,47,.06);
  --brand:#0a96c7; --brand-deep:#0a7ba6; --brand-soft:#e4f4fb;
  --coral:#ff7a59; --coral-soft:#fff0eb; --amber:#f5a623; --amber-soft:#fff5e1;
  --mint:#18a37b; --mint-soft:#e6f7f0; --violet:#7c5cff; --violet-soft:#efeaff;
  --shadow-sm:0 4px 14px -6px rgba(15,42,64,.18);
  --shadow:0 22px 48px -22px rgba(15,42,64,.30);
  --shadow-lg:0 40px 80px -30px rgba(15,42,64,.35);
  --radius:22px; --radius-sm:14px; --maxw:1160px;
}
*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scroll-padding-top:90px; -webkit-text-size-adjust:100%; }
body.bk-body{
  margin:0; background:var(--paper); color:var(--ink-2);
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  font-size:17px; line-height:1.7; -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
.bk-body h1,.bk-body h2,.bk-body h3,.bk-body h4{
  font-family:'Plus Jakarta Sans',system-ui,sans-serif; color:var(--ink);
  line-height:1.16; margin:0 0 .5em; font-weight:800; letter-spacing:-.02em;
}
.bk-body a{ color:var(--brand-deep); text-decoration:none; }
.bk-body img{ max-width:100%; display:block; }
.bk-wrap{ max-width:var(--maxw); margin:0 auto; padding:0 22px; position:relative; }
.bk-narrow{ max-width:760px; }

/* ── buttons ─────────────────────────────────────────────── */
.bk-btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  font-family:'Plus Jakarta Sans',sans-serif; font-weight:700; font-size:15.5px;
  padding:13px 22px; border-radius:13px; cursor:pointer; border:1.5px solid transparent;
  transition:transform .16s, box-shadow .16s, background .16s, color .16s, border-color .16s;
  min-height:50px; white-space:nowrap; text-align:center;
}
.bk-btn-primary{ background:linear-gradient(135deg,var(--brand),var(--brand-deep)); color:#fff; box-shadow:0 12px 26px -10px rgba(10,150,199,.6); }
.bk-btn-primary:hover{ transform:translateY(-2px); box-shadow:0 18px 34px -10px rgba(10,150,199,.7); color:#fff; }
.bk-btn-warm{ background:linear-gradient(135deg,#ff8a63,var(--coral)); color:#fff; box-shadow:0 12px 26px -10px rgba(255,122,89,.6); }
.bk-btn-warm:hover{ transform:translateY(-2px); color:#fff; }
.bk-btn-ghost{ background:var(--white); color:var(--ink); border-color:var(--line); box-shadow:var(--shadow-sm); }
.bk-btn-ghost:hover{ transform:translateY(-2px); border-color:var(--brand); color:var(--brand-deep); }
.bk-btn-sm{ padding:9px 15px; min-height:40px; font-size:14px; border-radius:10px; }

.bk-eyebrow{
  display:inline-flex; align-items:center; gap:7px; font-family:'Plus Jakarta Sans',sans-serif;
  font-weight:700; font-size:12.5px; letter-spacing:.06em; text-transform:uppercase;
  color:var(--brand-deep); background:var(--brand-soft); padding:7px 15px; border-radius:99px; margin-bottom:16px;
}

/* ── page section spacing ────────────────────────────────── */
.bk-section{ padding:clamp(40px,6vw,72px) 0; }
.bk-section.tint{ background:linear-gradient(180deg,var(--paper-2),var(--paper)); }

/* ════════════════════════════════════════════════════════════
   BLOG HOME
   ════════════════════════════════════════════════════════════ */
.bk-hero{
  position:relative; overflow:hidden;
  padding:clamp(40px,6vw,72px) 0 clamp(28px,4vw,40px);
  background:radial-gradient(60% 70% at 82% 8%, rgba(255,122,89,.12), transparent 60%),
             radial-gradient(55% 60% at 8% 30%, rgba(10,150,199,.11), transparent 60%),
             linear-gradient(180deg,var(--paper-2),var(--paper));
}
.bk-hero h1{ font-size:clamp(30px,4.6vw,50px); max-width:760px; }
.bk-hero h1 .hl{ position:relative; color:var(--brand-deep); }
.bk-hero h1 .hl::after{ content:""; position:absolute; left:0; right:0; bottom:.06em; height:.34em; background:linear-gradient(90deg,rgba(255,122,89,.45),rgba(245,166,35,.4)); border-radius:6px; z-index:-1; }
.bk-hero p.lede{ font-size:clamp(16px,2vw,19px); color:var(--ink-2); max-width:620px; margin:16px 0 24px; }

/* search + filters */
.bk-toolbar{ display:flex; flex-wrap:wrap; gap:14px; align-items:center; justify-content:space-between; }
.bk-search{ position:relative; flex:1; min-width:240px; max-width:420px; }
.bk-search input{
  width:100%; font-family:'Inter',sans-serif; font-size:15.5px; color:var(--ink);
  background:var(--white); border:1.5px solid var(--line); border-radius:13px;
  padding:13px 16px 13px 44px; box-shadow:var(--shadow-sm); outline:none; transition:border-color .15s, box-shadow .15s;
}
.bk-search input:focus{ border-color:var(--brand); box-shadow:0 0 0 3px var(--brand-soft); }
.bk-search .ic{ position:absolute; left:15px; top:50%; transform:translateY(-50%); color:var(--muted); }
.bk-chips{ display:flex; flex-wrap:wrap; gap:9px; }
.bk-chip{
  font-family:'Plus Jakarta Sans',sans-serif; font-weight:700; font-size:13.5px;
  color:var(--ink-2); background:var(--white); border:1.5px solid var(--line);
  border-radius:99px; padding:8px 15px; cursor:pointer; transition:.15s; display:inline-flex; align-items:center; gap:6px;
}
.bk-chip:hover{ border-color:var(--brand); color:var(--brand-deep); transform:translateY(-1px); }
.bk-chip.active{ color:#fff; background:linear-gradient(135deg,var(--brand),var(--brand-deep)); border-color:transparent; box-shadow:0 10px 22px -10px rgba(10,150,199,.6); }

/* featured */
.bk-featured{
  display:grid; grid-template-columns:1.15fr .85fr; gap:0; overflow:hidden;
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow); margin-top:8px;
}
.bk-featured .cover{ position:relative; min-height:300px; display:flex; align-items:center; justify-content:center; }
.bk-featured .cover img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.bk-featured .cover .emoji{ font-size:96px; filter:drop-shadow(0 10px 24px rgba(0,0,0,.18)); }
.bk-featured .body{ padding:clamp(24px,3vw,40px); display:flex; flex-direction:column; justify-content:center; }
.bk-featured .body h2{ font-size:clamp(23px,2.8vw,33px); margin:12px 0 10px; }
.bk-featured .body p{ font-size:16px; color:var(--ink-2); margin:0 0 20px; }
.bk-featured .ftag{ font-family:'Plus Jakarta Sans',sans-serif; font-weight:800; font-size:11.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--coral); }
@media(max-width:820px){ .bk-featured{ grid-template-columns:1fr; } .bk-featured .cover{ min-height:200px; } }

/* card grid */
.bk-sec-head{ display:flex; align-items:baseline; justify-content:space-between; gap:14px; margin:0 0 22px; flex-wrap:wrap; }
.bk-sec-head h2{ font-size:clamp(21px,2.4vw,28px); margin:0; display:flex; align-items:center; gap:10px; }
.bk-sec-head .count{ font-size:13.5px; color:var(--muted); font-weight:600; }
.bk-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media(max-width:900px){ .bk-grid{ grid-template-columns:1fr 1fr; } }
@media(max-width:600px){ .bk-grid{ grid-template-columns:1fr; } }

.bk-card{
  display:flex; flex-direction:column; background:var(--white); border:1px solid var(--line);
  border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-sm);
  transition:transform .2s, box-shadow .2s, border-color .2s; height:100%;
}
.bk-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow); border-color:rgba(10,150,199,.35); }
.bk-card .cover{ position:relative; aspect-ratio:16/9; display:flex; align-items:center; justify-content:center; overflow:hidden; }
.bk-card .cover img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transition:transform .4s; }
.bk-card:hover .cover img{ transform:scale(1.05); }
.bk-card .cover .emoji{ font-size:54px; filter:drop-shadow(0 8px 16px rgba(0,0,0,.16)); }
.bk-card .cat-pill{
  position:absolute; top:12px; left:12px; font-family:'Plus Jakarta Sans',sans-serif; font-weight:800;
  font-size:11px; letter-spacing:.03em; color:#fff; background:rgba(16,24,32,.55);
  backdrop-filter:blur(4px); padding:5px 11px; border-radius:99px; display:inline-flex; gap:5px; align-items:center;
}
.bk-card .tier-pill{
  position:absolute; top:12px; right:12px; font-family:'Plus Jakarta Sans',sans-serif; font-weight:800;
  font-size:10.5px; color:#fff; background:rgba(16,24,32,.55); backdrop-filter:blur(4px);
  padding:5px 10px; border-radius:99px;
}
.bk-card .body{ padding:20px 20px 22px; display:flex; flex-direction:column; flex:1; }
.bk-card h3{ font-size:18.5px; line-height:1.3; margin:0 0 8px; }
.bk-card .ex{ font-size:14.5px; color:var(--ink-2); margin:0 0 16px; flex:1; }
.bk-card .meta{ display:flex; align-items:center; gap:10px; font-size:12.5px; color:var(--muted); }
.bk-card .meta .dot{ opacity:.5; }
.bk-card .go{ margin-top:14px; font-size:13.5px; font-weight:700; color:var(--brand-deep); display:inline-flex; align-items:center; gap:6px; }

.bk-empty{ text-align:center; padding:60px 20px; color:var(--muted); }
.bk-empty .e{ font-size:46px; margin-bottom:10px; }

/* ════════════════════════════════════════════════════════════
   ARTICLE PAGE
   ════════════════════════════════════════════════════════════ */
.bk-progress{ position:fixed; top:0; left:0; height:3px; width:0; z-index:300; background:linear-gradient(90deg,var(--brand),var(--coral)); transition:width .1s linear; }

.bk-art-hero{ padding:clamp(28px,4vw,48px) 0 8px; }
.bk-back{ display:inline-flex; align-items:center; gap:7px; font-weight:600; font-size:14px; color:var(--muted); margin-bottom:18px; }
.bk-back:hover{ color:var(--brand-deep); }
.bk-art-cat{ display:inline-flex; align-items:center; gap:7px; font-family:'Plus Jakarta Sans',sans-serif; font-weight:800; font-size:12.5px; letter-spacing:.04em; text-transform:uppercase; padding:6px 14px; border-radius:99px; }
.bk-art-title{ font-size:clamp(28px,4.4vw,48px); margin:16px 0 14px; max-width:880px; }
.bk-art-excerpt{ font-size:clamp(17px,2vw,20px); color:var(--ink-2); max-width:760px; margin:0 0 20px; }
.bk-art-meta{ display:flex; align-items:center; gap:14px; flex-wrap:wrap; color:var(--muted); font-size:14px; }
.bk-art-meta .who{ display:flex; align-items:center; gap:10px; }
.bk-art-meta .av{ width:40px; height:40px; border-radius:50%; background:linear-gradient(135deg,var(--brand),var(--brand-deep)); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:800; font-family:'Plus Jakarta Sans',sans-serif; }
.bk-art-meta .nm{ color:var(--ink); font-weight:700; font-family:'Plus Jakarta Sans',sans-serif; }
.bk-art-cover{ margin:26px 0 0; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); border:1px solid var(--line); aspect-ratio:21/9; display:flex; align-items:center; justify-content:center; position:relative; }
.bk-art-cover img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.bk-art-cover .emoji{ font-size:90px; filter:drop-shadow(0 12px 26px rgba(0,0,0,.18)); }

/* article body typography */
.bk-article{ max-width:760px; margin:36px auto 0; font-size:18px; line-height:1.8; color:#2c3744; }
.bk-article > *:first-child{ margin-top:0; }
.bk-article h2{ font-size:clamp(22px,2.6vw,30px); margin:1.7em 0 .5em; }
.bk-article h3{ font-size:clamp(19px,2.2vw,23px); margin:1.5em 0 .4em; }
.bk-article h4{ font-size:18px; margin:1.4em 0 .4em; }
.bk-article p{ margin:0 0 1.15em; }
.bk-article a{ color:var(--brand-deep); text-decoration:underline; text-underline-offset:3px; text-decoration-thickness:1.5px; }
.bk-article a:hover{ color:var(--coral); }
.bk-article strong{ color:var(--ink); font-weight:700; }
.bk-article ul,.bk-article ol{ margin:0 0 1.2em; padding-left:1.4em; }
.bk-article li{ margin:.4em 0; padding-left:.2em; }
.bk-article ul li::marker{ color:var(--brand); }
.bk-article ol li::marker{ color:var(--brand-deep); font-weight:700; }
.bk-article blockquote{
  margin:1.6em 0; padding:6px 22px; border-left:4px solid var(--coral);
  background:var(--coral-soft); border-radius:0 14px 14px 0; color:var(--ink);
  font-size:19px; font-style:italic;
}
.bk-article code{ font-family:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace; font-size:.88em; background:var(--paper-2); border:1px solid var(--line-soft); border-radius:6px; padding:.12em .4em; color:#b6360d; }
.bk-article pre.bk-code{ margin:1.5em 0; background:#0f1b27; color:#e6eef5; border-radius:14px; padding:18px 20px; overflow:auto; box-shadow:var(--shadow-sm); }
.bk-article pre.bk-code code{ background:none; border:none; color:inherit; padding:0; font-size:14.5px; line-height:1.6; }
.bk-article hr{ border:none; border-top:1px dashed var(--line); margin:2.2em 0; }
.bk-article .bk-figure{ margin:1.8em 0; }
.bk-article .bk-figure img{ border-radius:16px; box-shadow:var(--shadow-sm); border:1px solid var(--line); width:100%; }
.bk-article .bk-figure figcaption{ text-align:center; font-size:13.5px; color:var(--muted); margin-top:9px; }

/* callouts */
.bk-callout{ display:flex; gap:13px; align-items:flex-start; margin:1.6em 0; padding:16px 18px; border-radius:16px; border:1px solid var(--line); background:var(--white); }
.bk-callout .bk-callout-ic{ font-size:20px; line-height:1.4; flex-shrink:0; }
.bk-callout > div{ flex:1; }
.bk-callout > div > *:first-child{ margin-top:0; }
.bk-callout > div > *:last-child{ margin-bottom:0; }
.bk-callout-tip{ background:var(--brand-soft); border-color:#bfe6f4; }
.bk-callout-note{ background:var(--violet-soft); border-color:#ddd3ff; }
.bk-callout-warn{ background:var(--amber-soft); border-color:#f5deb0; }
.bk-callout-success{ background:var(--mint-soft); border-color:#b8ead4; }

/* ── locked / gated content ──────────────────────────────── */
.bk-lock{
  position:relative; margin:30px auto 0; max-width:760px;
}
.bk-lock-teaser{ position:relative; max-height:240px; overflow:hidden; }
.bk-lock-teaser::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,transparent,var(--paper) 92%); }
.bk-lock-card{
  margin-top:-40px; position:relative; z-index:2; text-align:center;
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow); padding:clamp(28px,4vw,44px);
}
.bk-lock-ic{ width:64px; height:64px; margin:0 auto 16px; border-radius:18px; display:flex; align-items:center; justify-content:center; font-size:30px; background:var(--brand-soft); }
.bk-lock-card.premium .bk-lock-ic{ background:var(--coral-soft); }
.bk-lock-card h3{ font-size:clamp(21px,2.6vw,27px); margin:0 0 8px; }
.bk-lock-card p{ font-size:16px; color:var(--ink-2); max-width:480px; margin:0 auto 22px; }
.bk-lock-cta{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.bk-lock-or{ margin-top:18px; font-size:14px; color:var(--muted); }
.bk-lock-or a{ font-weight:700; cursor:pointer; }
/* inline unlock mini-form */
.bk-unlock{ display:none; max-width:420px; margin:18px auto 0; text-align:left; }
.bk-unlock.show{ display:block; }
.bk-unlock label{ font-size:13px; font-weight:700; color:var(--ink); display:block; margin-bottom:6px; }
.bk-unlock input{ width:100%; padding:12px 14px; border:1.5px solid var(--line); border-radius:11px; font-size:15px; outline:none; }
.bk-unlock input:focus{ border-color:var(--brand); box-shadow:0 0 0 3px var(--brand-soft); }
.bk-unlock .row{ display:flex; gap:8px; margin-top:10px; }
.bk-unlock .msg{ font-size:13px; margin-top:8px; min-height:18px; }
.bk-unlock .msg.err{ color:#d4502b; } .bk-unlock .msg.ok{ color:#0c7a5a; }

/* share + author + related */
.bk-share{ max-width:760px; margin:34px auto 0; display:flex; align-items:center; gap:12px; flex-wrap:wrap; border-top:1px solid var(--line); padding-top:22px; }
.bk-share span{ font-weight:700; color:var(--ink); font-family:'Plus Jakarta Sans',sans-serif; font-size:14px; }
.bk-share a,.bk-share button{ width:42px; height:42px; border-radius:12px; border:1px solid var(--line); background:var(--white); color:var(--ink-2); display:inline-flex; align-items:center; justify-content:center; cursor:pointer; transition:.15s; }
.bk-share a:hover,.bk-share button:hover{ transform:translateY(-2px); border-color:var(--brand); color:var(--brand-deep); }

.bk-author{ max-width:760px; margin:34px auto 0; display:flex; gap:18px; align-items:center; background:var(--white); border:1px solid var(--line); border-radius:var(--radius); padding:22px 24px; box-shadow:var(--shadow-sm); }
.bk-author .av{ width:64px; height:64px; border-radius:50%; flex-shrink:0; object-fit:cover; background:linear-gradient(135deg,var(--brand),var(--brand-deep)); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:800; font-size:26px; font-family:'Plus Jakarta Sans',sans-serif; }
.bk-author h4{ margin:0 0 4px; font-size:17px; }
.bk-author p{ margin:0; font-size:14px; color:var(--ink-2); }

.bk-cta-band{ max-width:760px; margin:40px auto 0; text-align:center; background:radial-gradient(60% 100% at 50% 0%, rgba(255,122,89,.14), transparent 60%), linear-gradient(135deg,#0e2233,#143a52); color:#eaf3f8; border-radius:var(--radius); padding:clamp(28px,4vw,44px); box-shadow:var(--shadow-lg); }
.bk-cta-band h3{ color:#fff; font-size:clamp(21px,2.6vw,28px); margin:0 0 10px; }
.bk-cta-band p{ color:#bcd3e0; margin:0 0 20px; }

/* ════════════════════════════════════════════════════════════
   ADMIN
   ════════════════════════════════════════════════════════════ */
.bk-admin-shell{ max-width:1160px; margin:0 auto; padding:30px 22px 80px; }
.bk-login{ max-width:420px; margin:8vh auto; background:var(--white); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow); padding:34px; text-align:center; }
.bk-login .lock{ font-size:42px; margin-bottom:8px; }
.bk-login h1{ font-size:24px; margin:0 0 6px; }
.bk-login p{ color:var(--ink-2); margin:0 0 20px; font-size:15px; }
.bk-login input{ width:100%; padding:14px 16px; border:1.5px solid var(--line); border-radius:12px; font-size:16px; outline:none; margin-bottom:12px; }
.bk-login input:focus{ border-color:var(--brand); box-shadow:0 0 0 3px var(--brand-soft); }
.bk-login .msg{ color:#d4502b; font-size:13.5px; min-height:18px; margin-top:6px; }

.bk-admin-top{ display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap; margin-bottom:26px; }
.bk-admin-top h1{ font-size:26px; margin:0; }
.bk-admin-top .actions{ display:flex; gap:10px; flex-wrap:wrap; }

.bk-admin-list{ display:grid; grid-template-columns:1fr; gap:12px; }
.bk-row{ display:flex; align-items:center; gap:16px; background:var(--white); border:1px solid var(--line); border-radius:16px; padding:14px 18px; box-shadow:var(--shadow-sm); }
.bk-row .rcover{ width:64px; height:44px; border-radius:10px; flex-shrink:0; display:flex; align-items:center; justify-content:center; font-size:24px; overflow:hidden; position:relative; }
.bk-row .rcover img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.bk-row .rinfo{ flex:1; min-width:0; }
.bk-row .rinfo .t{ font-family:'Plus Jakarta Sans',sans-serif; font-weight:700; color:var(--ink); font-size:16px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.bk-row .rinfo .s{ font-size:12.5px; color:var(--muted); margin-top:3px; display:flex; gap:8px; flex-wrap:wrap; align-items:center; }
.bk-tag{ font-size:10.5px; font-weight:800; padding:3px 8px; border-radius:99px; font-family:'Plus Jakarta Sans',sans-serif; letter-spacing:.02em; }
.bk-tag.draft{ background:var(--amber-soft); color:#9a6206; }
.bk-tag.pub{ background:var(--mint-soft); color:#0c7a5a; }
.bk-row .ractions{ display:flex; gap:8px; flex-shrink:0; }

/* editor */
.bk-editor{ display:grid; grid-template-columns:1fr 1fr; gap:22px; align-items:start; }
@media(max-width:980px){ .bk-editor{ grid-template-columns:1fr; } }
.bk-field{ margin-bottom:16px; }
.bk-field label{ display:block; font-family:'Plus Jakarta Sans',sans-serif; font-weight:700; font-size:13.5px; color:var(--ink); margin-bottom:6px; }
.bk-field .hint{ font-weight:500; color:var(--muted); font-size:12px; }
.bk-input,.bk-textarea,.bk-select{
  width:100%; font-family:'Inter',sans-serif; font-size:15px; color:var(--ink); background:var(--white);
  border:1.5px solid var(--line); border-radius:12px; padding:11px 14px; outline:none; transition:border-color .15s, box-shadow .15s;
}
.bk-input:focus,.bk-textarea:focus,.bk-select:focus{ border-color:var(--brand); box-shadow:0 0 0 3px var(--brand-soft); }
.bk-textarea{ resize:vertical; min-height:120px; line-height:1.6; }
.bk-grid2{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
@media(max-width:560px){ .bk-grid2{ grid-template-columns:1fr; } }

.bk-card-pane{ background:var(--white); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow-sm); padding:22px; }
.bk-card-pane h3{ font-size:16px; margin:0 0 16px; display:flex; align-items:center; gap:8px; }

/* markdown toolbar */
.bk-md-toolbar{ display:flex; flex-wrap:wrap; gap:6px; margin-bottom:8px; }
.bk-md-toolbar button{
  font-family:'Plus Jakarta Sans',sans-serif; font-weight:700; font-size:13px; color:var(--ink-2);
  background:var(--paper-2); border:1px solid var(--line); border-radius:9px; padding:7px 11px; cursor:pointer; transition:.12s; min-height:36px;
}
.bk-md-toolbar button:hover{ background:var(--brand-soft); color:var(--brand-deep); border-color:#bfe6f4; }
.bk-md-area{ width:100%; min-height:420px; font-family:'SFMono-Regular',Consolas,Menlo,monospace; font-size:14.5px; line-height:1.7; color:var(--ink); background:var(--white); border:1.5px solid var(--line); border-radius:12px; padding:14px 16px; outline:none; resize:vertical; }
.bk-md-area:focus{ border-color:var(--brand); box-shadow:0 0 0 3px var(--brand-soft); }

.bk-preview{ border:1px dashed var(--line); border-radius:14px; padding:6px 22px; max-height:560px; overflow:auto; background:var(--paper); }
.bk-preview .bk-article{ margin-top:18px; font-size:16.5px; }

/* cover preview in editor */
.bk-cover-prev{ aspect-ratio:16/9; border-radius:14px; overflow:hidden; display:flex; align-items:center; justify-content:center; position:relative; margin-bottom:12px; border:1px solid var(--line); }
.bk-cover-prev img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.bk-cover-prev .emoji{ font-size:46px; }

/* toast */
.bk-toast{ position:fixed; bottom:24px; left:50%; transform:translateX(-50%) translateY(20px); opacity:0; pointer-events:none; background:var(--ink); color:#fff; font-family:'Plus Jakarta Sans',sans-serif; font-weight:700; font-size:14.5px; padding:13px 22px; border-radius:13px; box-shadow:var(--shadow-lg); transition:.25s; z-index:400; }
.bk-toast.show{ opacity:1; transform:translateX(-50%) translateY(0); }
.bk-toast.err{ background:#b3361a; }

.bk-hidden{ display:none !important; }
.bk-link-btn{ background:none; border:none; color:var(--brand-deep); font-weight:700; cursor:pointer; padding:0; font-size:inherit; text-decoration:underline; }

/* reveal on scroll */
.bk-reveal{ opacity:0; transform:translateY(18px); transition:opacity .5s ease, transform .5s ease; }
.bk-reveal.in{ opacity:1; transform:none; }
@media(prefers-reduced-motion:reduce){ .bk-reveal{ opacity:1; transform:none; transition:none; } .bk-progress{ display:none; } }

/* ════════════════════════════════════════════════════════════
   TWO-COLUMN LAYOUT: SIDEBAR + MAIN
   ════════════════════════════════════════════════════════════ */
.bk-layout{
  display:grid;
  grid-template-columns:240px 1fr;
  gap:36px;
  align-items:start;
}
@media(max-width:900px){ .bk-layout{ grid-template-columns:1fr; } }

/* ── Sidebar ──────────────────────────────────────────────── */
.bk-sidebar{ min-width:0; }
.bk-sidebar-sticky{
  position:sticky; top:88px;
  background:var(--white); border:1px solid var(--line);
  border-radius:var(--radius); padding:20px; box-shadow:var(--shadow-sm);
}
.bk-sidebar-h{
  font-size:12px; font-weight:800; letter-spacing:.07em; text-transform:uppercase;
  color:var(--muted); margin:0 0 10px; padding:0;
  font-family:'Plus Jakarta Sans',sans-serif;
}
.bk-sidebar-search{
  position:relative; margin-bottom:20px;
}
.bk-sidebar-search input{
  width:100%; font-family:'Inter',sans-serif; font-size:14.5px; color:var(--ink);
  background:var(--paper); border:1.5px solid var(--line); border-radius:11px;
  padding:10px 12px 10px 38px; box-shadow:none; outline:none; transition:border-color .15s, box-shadow .15s;
}
.bk-sidebar-search input:focus{ border-color:var(--brand); box-shadow:0 0 0 3px var(--brand-soft); }
.bk-sidebar-search .ic{ position:absolute; left:11px; top:50%; transform:translateY(-50%); color:var(--muted); font-size:15px; }

/* sidebar category buttons */
#bkChips{ display:flex; flex-direction:column; gap:4px; }
.bk-scat{
  display:flex; align-items:center; gap:9px; width:100%;
  font-family:'Plus Jakarta Sans',sans-serif; font-weight:600; font-size:14px;
  color:var(--ink-2); background:transparent; border:none;
  border-radius:10px; padding:9px 10px; cursor:pointer;
  transition:background .14s, color .14s; text-align:left;
}
.bk-scat:hover{ background:var(--paper-2); color:var(--ink); }
.bk-scat.active{
  background:var(--brand-soft); color:var(--brand-deep); font-weight:700;
}
.bk-scat-ic{ font-size:16px; flex-shrink:0; }
.bk-scat-lbl{ flex:1; }
.bk-scat-n{
  font-size:11.5px; font-weight:700; color:var(--muted);
  background:var(--paper-2); border-radius:99px; padding:2px 7px; min-width:22px; text-align:center;
}
.bk-scat.active .bk-scat-n{ background:rgba(10,150,199,.15); color:var(--brand-deep); }

/* sidebar nav divider + tags */
.bk-sidebar-nav{ margin-bottom:4px; }
.bk-sidebar-tags{ margin-top:20px; border-top:1px solid var(--line-soft); padding-top:16px; }
.bk-tag-cloud{ display:flex; flex-wrap:wrap; gap:7px; }
.bk-tag-btn{
  font-family:'Plus Jakarta Sans',sans-serif; font-weight:700; font-size:12px;
  color:var(--ink-2); background:var(--paper-2); border:1px solid var(--line);
  border-radius:99px; padding:5px 11px; cursor:pointer; transition:.14s;
}
.bk-tag-btn:hover{ border-color:var(--brand); color:var(--brand-deep); }
.bk-tag-btn.active{ background:var(--brand-soft); color:var(--brand-deep); border-color:transparent; }

/* mobile: sidebar becomes horizontal scroll row above grid */
.bk-mobile-search{ display:none; }
@media(max-width:900px){
  .bk-sidebar-sticky{ position:static; padding:0; background:none; border:none; box-shadow:none; border-radius:0; }
  .bk-sidebar-search{ display:none; } /* use mobile search instead */
  .bk-mobile-search{
    display:flex; align-items:center; gap:0; position:relative; margin-bottom:16px;
  }
  .bk-mobile-search input{
    width:100%; font-family:'Inter',sans-serif; font-size:15px; color:var(--ink);
    background:var(--white); border:1.5px solid var(--line); border-radius:12px;
    padding:11px 14px 11px 42px; outline:none; transition:border-color .15s;
  }
  .bk-mobile-search input:focus{ border-color:var(--brand); box-shadow:0 0 0 3px var(--brand-soft); }
  .bk-mobile-search .ic{ position:absolute; left:13px; color:var(--muted); font-size:16px; }
  #bkChips{
    flex-direction:row; flex-wrap:nowrap; overflow-x:auto; gap:8px;
    padding-bottom:6px; scrollbar-width:none;
  }
  #bkChips::-webkit-scrollbar{ display:none; }
  .bk-scat{
    flex-shrink:0; flex-direction:row; white-space:nowrap;
    border:1.5px solid var(--line); border-radius:99px; padding:7px 13px;
    background:var(--white);
  }
  .bk-scat.active{ background:linear-gradient(135deg,var(--brand),var(--brand-deep)); color:#fff; border-color:transparent; }
  .bk-scat.active .bk-scat-n{ background:rgba(255,255,255,.25); color:#fff; }
  .bk-sidebar-h{ display:none; }
  .bk-sidebar-tags{ border-top:none; padding-top:0; margin-top:10px; }
}

/* ── Pagination ───────────────────────────────────────────── */
.bk-pagination{
  display:flex; align-items:center; justify-content:center;
  gap:6px; flex-wrap:wrap; margin-top:36px; padding-top:28px;
  border-top:1px solid var(--line-soft);
}
.bk-pg-btn{
  font-family:'Plus Jakarta Sans',sans-serif; font-weight:700; font-size:14px;
  color:var(--ink-2); background:var(--white); border:1.5px solid var(--line);
  border-radius:10px; padding:9px 15px; cursor:pointer; min-width:42px;
  transition:.14s; display:inline-flex; align-items:center; justify-content:center;
}
.bk-pg-btn:hover{ border-color:var(--brand); color:var(--brand-deep); transform:translateY(-1px); }
.bk-pg-btn.active{ background:linear-gradient(135deg,var(--brand),var(--brand-deep)); color:#fff; border-color:transparent; box-shadow:0 8px 18px -8px rgba(10,150,199,.6); }
.bk-pg-ellipsis{ color:var(--muted); padding:0 4px; font-size:14px; }

/* ── Admin: slug field ────────────────────────────────────── */
.bk-slug-wrap{ display:flex; align-items:center; border:1.5px solid var(--line); border-radius:12px; overflow:hidden; background:var(--white); transition:border-color .15s; }
.bk-slug-wrap:focus-within{ border-color:var(--brand); box-shadow:0 0 0 3px var(--brand-soft); }
.bk-slug-pre{ font-size:13px; color:var(--muted); padding:11px 0 11px 14px; white-space:nowrap; flex-shrink:0; font-family:'Inter',sans-serif; }
.bk-slug-input{ border:none !important; box-shadow:none !important; border-radius:0 !important; flex:1; padding-left:4px !important; }
.bk-slug-input:focus{ box-shadow:none !important; }

@media(max-width:560px){
  .bk-section{ padding:34px 0; }
  .bk-btn{ white-space:normal; }
  .bk-art-meta{ font-size:13px; }
}