/* ═══════════════════════════════════════════════════════════════
   BLOG V2 — GeetAI Studio Journal
   Editorial publication layer built on core-v2 tokens.
   Featured story → category rail → 3/2/1 grid → reader modal.
   ═══════════════════════════════════════════════════════════════ */

/* ─── PAGE BACKGROUND — Cream + White ambient ─── */
body[data-page="blog"]{
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%,#FFFFFF 0%,transparent 60%),
    radial-gradient(ellipse 70% 50% at 75% 25%,#FFFDF5 0%,transparent 55%),
    radial-gradient(ellipse 60% 55% at 40% 55%,#FFF8EE 0%,transparent 60%),
    radial-gradient(ellipse 75% 50% at 80% 75%,#FFFDF5 0%,transparent 55%),
    radial-gradient(ellipse 70% 60% at 15% 90%,#FFFFFF 0%,transparent 60%),
    linear-gradient(180deg,#FFFAF0 0%,#FFFDF8 50%,#FFF8EE 100%);
  background-size:100% 100%;
  animation:bvAmbient 25s ease-in-out infinite alternate;
}
@keyframes bvAmbient{
  0%{background-position:0% 0%,0% 0%,0% 0%,0% 0%,0% 0%,0% 0%}
  100%{background-position:4% -4%,-2% 3%,3% -2%,-3% 2%,2% -3%,0% 0%}
}

/* ─── HERO ─── */
.bv-hero{
  padding:calc(var(--nav-h) + var(--sp-6)) 0 var(--sp-5);
  position:relative;z-index:1;
}
.bv-hero-inner{max-width:760px;text-align:center;margin:0 auto}

.bv-hero-inner h1{margin-bottom:20px}
.bv-hero-inner h1.gv-h1{
  font-size:clamp(2.1rem,4.2vw,3.4rem);
  line-height:1.12;letter-spacing:-0.01em;
}
.bv-hero-inner .gv-lead{margin-bottom:0}
.bv-hero-stats{
  display:flex;gap:clamp(24px,4vw,52px);margin-top:var(--sp-5);
  padding-top:var(--sp-4);border-top:1px solid var(--hair);flex-wrap:wrap;
}
.bv-stat{display:flex;flex-direction:column;gap:4px}
.bv-stat .num{font-family:'Sora',sans-serif;font-weight:700;font-size:1.6rem;letter-spacing:-0.02em;color:var(--ink)}
.bv-stat .lbl{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:1.4px;text-transform:uppercase;color:var(--ink-muted)}

/* ─── CATEGORY RAIL ─── */
.bv-rail-wrap{
  position:sticky;top:var(--nav-h);z-index:40;
  background:rgba(250,249,246,0.88);backdrop-filter:blur(16px) saturate(1.3);-webkit-backdrop-filter:blur(16px) saturate(1.3);
  border-bottom:1px solid var(--hair);
}
.bv-rail{
  max-width:var(--container);margin:0 auto;padding:14px clamp(20px,5vw,48px);
  display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.bv-rail::-webkit-scrollbar{display:none}
.bv-chip{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;
  background:var(--glass-1-bg);backdrop-filter:blur(var(--glass-1-blur)) saturate(1.3);
  -webkit-backdrop-filter:blur(var(--glass-1-blur)) saturate(1.3);
  border:1px solid var(--glass-1-border);
  color:var(--ink-dim);font-family:'Inter',sans-serif;font-size:11.5px;
  font-weight:600;letter-spacing:0.3px;white-space:nowrap;cursor:pointer;
  transition:background .35s var(--ease),color .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease);
}
.bv-chip:hover{border-color:var(--brand-teal);color:var(--ink);box-shadow:var(--glass-teal-glow)}
.bv-chip.active{background:var(--accent-gradient);border-color:transparent;color:var(--on-ink);box-shadow:var(--glass-teal-glow)}

/* ─── FEATURED COLLAPSE WRAPPER ─── */
.bv-featured-wrap{position:relative}
.bv-featured-toggle{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;padding:10px 0;margin-top:4px;
  background:none;border:none;cursor:pointer;color:var(--ink-muted);
  font-family:'Inter',sans-serif;font-size:11px;font-weight:600;letter-spacing:0.5px;
  transition:color .3s var(--ease);
}
.bv-featured-toggle:hover{color:var(--ink)}
.bv-toggle-line{
  flex:1;max-width:120px;height:1px;
  background:linear-gradient(90deg,transparent,var(--ink-faint),transparent);
}
.bv-toggle-chev{width:18px;height:18px;transition:transform .4s var(--ease)}
.bv-featured-wrap.is-collapsed .bv-toggle-chev{transform:rotate(180deg)}
.bv-featured-wrap.is-collapsed .bv-featured-toggle{position:relative;z-index:2}
.bv-featured-wrap .bv-featured{
  transition:max-height .5s var(--ease),opacity .4s var(--ease),margin .4s var(--ease),padding .4s var(--ease);
  max-height:800px;opacity:1;overflow:hidden;
  min-height:470px;
}
.bv-featured-wrap.is-collapsed .bv-featured{
  max-height:0;opacity:0;margin:0;padding:0;overflow:hidden;border:none;min-height:0;
}

/* ─── FEATURED ─── */
.bv-featured-section{padding:var(--sp-6) 0 var(--sp-5)}
.bv-featured{
  display:grid;grid-template-columns:1.35fr 1fr;gap:clamp(28px,4vw,60px);align-items:center;
  cursor:pointer;
  padding:clamp(16px,2vw,28px);border-radius:var(--r-lg);
  background:var(--glass-1-bg);backdrop-filter:blur(var(--glass-1-blur)) saturate(1.3);
  -webkit-backdrop-filter:blur(var(--glass-1-blur)) saturate(1.3);
  border:1px solid var(--glass-1-border);
  transition:box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.bv-featured:hover{box-shadow:0 20px 50px -20px rgba(18,107,120,0.28),var(--glass-teal-glow);border-color:var(--glass-2-border)}
.bv-featured-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--hair);
  aspect-ratio:16/9;background:var(--paper-3);min-height:280px;
}
.bv-featured-media img{width:100%;height:100%;object-fit:cover;object-position:center 30%;transition:transform .8s var(--ease)}
.bv-featured-media::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(14,14,13,0.3));pointer-events:none}
.bv-featured:hover .bv-featured-media img{transform:scale(1.045)}
.bv-featured-tag{
  position:absolute;top:18px;left:18px;display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:999px;background:var(--signature-gradient);color:var(--on-ink);
  font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:2px;text-transform:uppercase;font-weight:600;
  box-shadow:0 12px 28px -10px rgba(100,116,139,0.35);
}
.bv-featured-copy{display:flex;flex-direction:column;gap:18px}
.bv-featured-meta{
  display:flex;align-items:center;gap:10px;font-family:'JetBrains Mono',monospace;
  font-size:10.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--ink-muted);
}
.bv-featured-meta .bv-cat{color:var(--signature);font-weight:600}
.bv-featured-meta .sep{width:3px;height:3px;border-radius:50%;background:var(--ink-faint)}
.bv-featured-copy h2{font-size:clamp(1.8rem,3vw,2.7rem)}
.bv-featured-copy p{margin-top:2px}
.bv-featured-read{
  display:inline-flex;align-items:center;gap:8px;font-family:'Inter',sans-serif;
  font-size:12px;font-weight:600;letter-spacing:0.6px;text-transform:uppercase;color:var(--ink);
  margin-top:4px;
}
.bv-featured-read svg{width:14px;height:14px;transition:transform .4s var(--ease)}
.bv-featured:hover .bv-featured-read svg{transform:translateX(5px)}

/* ─── GRID SECTION ─── */
.bv-grid-section{padding:0 0 var(--sp-6)}
.bv-grid-heading{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  margin-bottom:var(--sp-4);flex-wrap:wrap;
}
.bv-grid-heading h2{font-size:clamp(1.3rem,2vw,1.7rem)}
.bv-grid-count{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:1px;color:var(--ink-muted)}

/* ─── CARD ─── */
.bv-card{
  display:flex;flex-direction:column;cursor:pointer;
  background:var(--paper-2);border:1px solid var(--hair);border-radius:var(--r-md);
  overflow:hidden;transition:transform .5s var(--ease),border-color .4s var(--ease),box-shadow .5s var(--ease);
}
.bv-card:hover{transform:translateY(-5px);border-color:var(--hair-strong);box-shadow:0 26px 60px -32px rgba(14,14,13,0.22)}
.bv-card-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-3)}
.bv-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.bv-card:hover .bv-card-media img{transform:scale(1.06)}
.bv-card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.bv-card-meta{
  display:flex;align-items:center;gap:8px;font-family:'JetBrains Mono',monospace;
  font-size:10px;letter-spacing:1.2px;text-transform:uppercase;color:var(--ink-muted);
}
.bv-card-meta .bv-cat{color:var(--signature);font-weight:600}
.bv-card-meta .sep{width:3px;height:3px;border-radius:50%;background:var(--ink-faint)}
.bv-card-body h3{
  font-family:'Sora',sans-serif;font-weight:600;font-size:1.06rem;line-height:1.35;
  letter-spacing:-0.01em;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.bv-card-body p{
  font-size:0.86rem;line-height:1.6;color:var(--ink-dim);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-top:-2px;
}
.bv-card-read{
  margin-top:auto;padding-top:8px;font-size:11px;font-weight:600;letter-spacing:0.6px;
  text-transform:uppercase;color:var(--ink-muted);transition:color .3s var(--ease);
}
.bv-card:hover .bv-card-read{color:var(--signature)}

/* ─── LOAD MORE ─── */
.bv-more-wrap{display:flex;justify-content:center;margin-top:var(--sp-5)}
.gv-btn-outline{
  background:transparent;border:1px solid var(--hair-strong);
  color:var(--ink);
  transition:all .4s var(--ease);
}
.gv-btn-outline:hover{
  background:var(--accent-gradient);border-color:transparent;color:var(--on-ink);
  transform:translateY(-3px);
  box-shadow:0 16px 36px -12px rgba(18,107,120,0.35),var(--glass-teal-glow);
}

/* ─── EMPTY STATE ─── */
.bv-empty{
  grid-column:1/-1;text-align:center;padding:var(--sp-6) 20px;
  display:flex;flex-direction:column;align-items:center;gap:14px;
  border:1px dashed var(--hair);border-radius:var(--r-lg);background:var(--paper-3);
}
.bv-empty::before{content:'✦';font-size:22px;color:var(--ink-faint);letter-spacing:0}
.bv-empty h3{font-family:'Sora',sans-serif;font-size:1.2rem;color:var(--ink);letter-spacing:-0.01em}
.bv-empty p{font-size:0.9rem;color:var(--ink-muted);max-width:36ch;line-height:1.6}

/* ─── REVEAL STAGGER ─── */
.bv-reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.bv-reveal.in{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){.bv-reveal{opacity:1;transform:none;transition:none}}

/* ─── READER MODAL ─── */
.bv-modal{
  position:fixed;inset:0;z-index:9995;visibility:hidden;opacity:0;
  transition:opacity .4s var(--ease),visibility 0s linear .4s;
}
.bv-modal.open{visibility:visible;opacity:1;transition:opacity .4s var(--ease)}
.bv-modal-bg{background:rgba(10,10,10,0.6);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.bv-modal-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(720px,100%);
  background:var(--paper-2);overflow-y:auto;transform:translateX(100%);
  transition:transform .5s var(--ease);
}
.bv-modal.open .bv-modal-panel{transform:translateX(0)}
.bv-modal-bg{
  position:fixed;inset:0;z-index:9994;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .4s var(--ease),visibility 0s linear .4s;
}
.bv-modal-bg.open{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .4s var(--ease)}
.bv-modal-close{
  position:sticky;top:20px;left:100%;margin-right:20px;margin-bottom:-40px;
  width:40px;height:40px;border-radius:50%;border:1px solid var(--hair-strong);
  background:var(--paper-2);color:var(--ink);cursor:pointer;font-size:20px;
  display:flex;align-items:center;justify-content:center;z-index:2;transition:all .3s;
}
.bv-modal-close:hover{background:var(--ink);color:var(--on-ink);border-color:var(--ink)}
.bv-modal-media{width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--paper-3)}
.bv-modal-media img{width:100%;height:100%;object-fit:cover}
.bv-modal-body{padding:8px clamp(24px,5vw,56px) 64px}
.bv-modal-meta{
  display:flex;align-items:center;gap:10px;margin:24px 0 16px;
  font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:1.4px;
  text-transform:uppercase;color:var(--ink-muted);
}
.bv-modal-meta .bv-cat{color:var(--signature);font-weight:600}
.bv-modal-body h1{font-size:clamp(1.7rem,3.4vw,2.4rem);margin-bottom:14px;font-family:'Sora',sans-serif;font-weight:700;letter-spacing:-0.02em;line-height:1.15;color:var(--ink)}
.bv-modal-author{font-size:0.85rem;color:var(--ink-muted);margin-bottom:28px}
.bv-modal-article p{font-size:1.02rem;line-height:1.85;color:var(--ink-dim);margin-bottom:20px;max-width:64ch}
.bv-modal-tags{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 30px}
.bv-modal-tags span{
  font-size:10.5px;letter-spacing:0.6px;padding:6px 13px;border-radius:999px;
  border:1px solid var(--hair-strong);color:var(--ink-dim);text-transform:uppercase;
}
.bv-modal-cta{margin-top:8px}
body.bv-modal-lock{overflow:hidden}

/* ─── BROKEN IMAGE FALLBACK ─── */
.bv-media-fallback{position:relative;background:linear-gradient(135deg,var(--paper-3) 0%,var(--hair) 100%)}
.bv-media-fallback img{opacity:0}
.bv-media-fallback::after{
  content:'GeetAI';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-family:'Cinzel',serif;font-size:13px;letter-spacing:3px;color:var(--ink-muted);
}

/* ─── RESPONSIVE ─── */
@media(max-width:900px){
  .bv-featured{grid-template-columns:1fr}
  .bv-featured-media{aspect-ratio:16/9;min-height:220px}
}
@media(max-width:640px){
  .bv-hero{padding-top:calc(var(--nav-h) + var(--sp-4))}
  .bv-hero-stats{gap:20px}
  .bv-rail{padding:12px clamp(16px,5vw,48px)}
  .bv-modal-panel{width:100%}
  .bv-featured{padding:14px}
  .bv-featured-media{min-height:190px}
}