/* Book Gallery — publications grid + single publication page.
   Matches the site theme: red #C00613, ink #141414, warm grey #f6f3f1. */

.bg-wrap, .bgp { --bg-red:#C00613; --bg-ink:#141414; --bg-muted:#5f6368; --bg-line:#ece7e4;
	--bg-font:Poppins,"Hind Siliguri",sans-serif; font-family:var(--bg-font); }

/* ---------- Buttons ---------- */
.bg-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 22px;border:2px solid var(--bg-red);border-radius:2px;background:var(--bg-red);color:#fff!important;font:600 16px/1 var(--bg-font);text-decoration:none!important;transition:background .15s,color .15s,border-color .15s;cursor:pointer}
.bg-btn:hover,.bg-btn:focus-visible{background:#9c0410;border-color:#9c0410}
.bg-btn--ghost{background:#fff;color:#272A33!important;border-color:#272A33}
.bg-btn--ghost:hover,.bg-btn--ghost:focus-visible{background:#272A33;color:#fff!important;border-color:#272A33}
.bg-btn--sm{min-height:38px;padding:8px 14px;font-size:14px}

/* ---------- Tabs ---------- */
.bg-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:0 0 28px}
.bg-tab{min-height:46px;padding:10px 24px;border:0;border-radius:0;background:var(--bg-red);color:#fff;font:600 15px/1 var(--bg-font);letter-spacing:.04em;text-transform:uppercase;cursor:pointer;transition:background .15s}
.bg-tab:hover,.bg-tab:focus-visible{background:#9c0410}
.bg-tab.is-active{background:#272A33}
.bg-tab:focus-visible{outline:2px solid var(--bg-red);outline-offset:3px}

/* ---------- Grid + cards ---------- */
.bg-gallery{display:grid;gap:28px 24px;grid-template-columns:repeat(4,minmax(0,1fr))}
.bg-cols-1{grid-template-columns:1fr}.bg-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.bg-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.bg-cols-5{grid-template-columns:repeat(5,minmax(0,1fr))}
.bg-cols-6{grid-template-columns:repeat(6,minmax(0,1fr))}
.bg-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--bg-line);transition:box-shadow .2s,transform .2s}
.bg-card[hidden]{display:none!important}
.bg-card:hover{box-shadow:0 10px 26px rgba(0,0,0,.08);transform:translateY(-2px)}
.bg-card__cover{display:block;aspect-ratio:3/4;overflow:hidden;background:#f2efed;padding:14px 14px 0}
.bg-card__img{display:block;width:100%;height:100%;object-fit:contain;object-position:center bottom;box-shadow:0 6px 16px rgba(0,0,0,.18)}
.bg-card__placeholder{display:flex;align-items:center;justify-content:center;height:100%;padding:16px;background:var(--bg-red);color:#fff;font:700 18px/1.4 var(--bg-font);text-align:center}
.bg-card__body{display:flex;flex-direction:column;flex:1;padding:14px 16px 16px}
.bg-card__kicker{margin:0 0 4px;font:600 13px/1.4 var(--bg-font);color:var(--bg-red)}
.bg-wrap .bg-card__title,.bgp .bg-card__title{margin:0 0 4px;font:700 16px/1.5 var(--bg-font);text-transform:none;letter-spacing:0}
.bg-card__title a{color:var(--bg-ink);text-decoration:none}
.bg-card__title a:hover,.bg-card__title a:focus-visible{color:var(--bg-red)}
.bg-card__author{margin:0 0 10px;font:400 14px/1.5 var(--bg-font);color:var(--bg-muted)}
.bg-card__actions{display:flex;gap:8px;margin-top:auto;padding-top:8px}
.bg-card__actions .bg-btn{flex:1}
.bg-empty{font:400 17px/1.7 var(--bg-font);color:var(--bg-muted)}

/* ---------- Single page ---------- */
.bgp{background:#f6f3f1;padding:28px 0 64px}
.bgp__inner{max-width:1180px;margin:0 auto;padding:0 20px}
.bgp__crumbs{margin-bottom:22px;font:500 14px/1.5 var(--bg-font);color:var(--bg-muted)}
.bgp__crumbs a{color:var(--bg-muted);text-decoration:none}
.bgp__crumbs a:hover{color:var(--bg-red)}
.bgp__top{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:48px;align-items:start;background:#fff;border:1px solid var(--bg-line);padding:36px}
.bgp__cover img{display:block;width:100%;height:auto;box-shadow:0 14px 34px rgba(0,0,0,.22)}
.bgp__cover .bg-card__placeholder{aspect-ratio:3/4}
.bgp__kicker{margin:0 0 8px;font:600 15px/1.4 var(--bg-font);color:var(--bg-red)}
.bgp .bgp__title{margin:0 0 18px;font:700 clamp(26px,3vw,40px)/1.35 var(--bg-font);color:var(--bg-ink);text-transform:none;letter-spacing:0}
.bgp__meta{display:flex;flex-wrap:wrap;gap:12px 36px;margin:0 0 18px;padding:14px 0;border-top:1px solid var(--bg-line);border-bottom:1px solid var(--bg-line)}
.bgp__meta dt{font:500 13px/1.4 var(--bg-font);color:var(--bg-muted);margin:0}
.bgp__meta dd{font:600 16px/1.5 var(--bg-font);color:var(--bg-ink);margin:2px 0 0}
.bgp__excerpt{font:400 17px/1.8 var(--bg-font);color:#333;margin:0 0 20px}
.bgp__actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:8px}
.bgp__actions .bg-btn{min-height:52px;padding:12px 28px;font-size:17px}
.bgp__content{background:#fff;border:1px solid var(--bg-line);border-top:0;padding:28px 36px;font:400 17px/1.85 var(--bg-font);color:#2b2b2b}
.bgp__reader{margin-top:40px}
.bgp__reader-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-top:3px solid var(--bg-red);padding-top:10px;margin-bottom:16px}
.bgp .bgp__reader-head h2,.bgp .bgp__section-title{margin:0;font:700 24px/1.3 var(--bg-font);color:var(--bg-ink);text-transform:none;letter-spacing:0}
.bgp__reader-head a{font:600 15px/1 var(--bg-font);color:var(--bg-red);text-decoration:none;white-space:nowrap}
.bgp__reader-frame{background:#fff;border:1px solid var(--bg-line)}
.bgp__reader-frame.is-open{height:min(88vh,1100px)}
.bgp__reader-frame iframe{display:block;width:100%;height:100%;border:0}
.bgp__reader-start{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;width:100%;min-height:260px;border:0;background:#fff;cursor:pointer;font:600 18px/1.4 var(--bg-font);color:var(--bg-ink)}
.bgp__reader-start:hover,.bgp__reader-start:focus-visible{background:#fbf5f5;color:var(--bg-red)}
.bgp__reader-start small{font:400 14px/1.4 var(--bg-font);color:var(--bg-muted)}
.bgp__reader-icon{font-size:44px;line-height:1}
.bgp__related{margin-top:48px}
.bgp__section-title{border-top:3px solid var(--bg-red);padding-top:10px;margin-bottom:20px!important}
.bgp .spb-share--top{margin-top:20px}

@media (max-width:1100px){.bg-gallery.bg-cols-5,.bg-gallery.bg-cols-6{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (max-width:900px){.bg-gallery,.bg-gallery.bg-cols-4,.bg-gallery.bg-cols-5,.bg-gallery.bg-cols-6{grid-template-columns:repeat(3,minmax(0,1fr))}
	.bgp__top{grid-template-columns:220px minmax(0,1fr);gap:28px;padding:24px}}
@media (max-width:640px){.bg-gallery,.bg-gallery[class*="bg-cols-"]{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
	.bg-card__actions{flex-direction:column}
	.bgp__top{grid-template-columns:1fr;padding:20px}.bgp__cover{max-width:240px;margin:0 auto}
	.bgp__actions .bg-btn{flex:1 1 100%}.bgp__content{padding:20px}.bg-tab{padding:10px 16px;font-size:13px}}