/* ============================================================
   Sezione «I miei libri» — componenti .bk-*
   Colori da variabili del tema; la fascia collana ha una palette scura propria (volutamente romantica).
   ============================================================ */
.bk-sec{
  --bk-ink:var(--ink); --bk-text:var(--text); --bk-muted:var(--muted); --bk-line:var(--line);
  --bk-card:var(--card); --bk-accent:var(--a1);
  background:var(--bg); position:relative;
}

/* ---------- A. Banner ---------- */
.bk-banner{position:relative;padding:clamp(4.5rem,9vw,8rem) 0 clamp(2.5rem,5vw,4rem);
  background:radial-gradient(900px 420px at 85% 0,var(--hero-tint),transparent 62%),var(--bg);overflow:hidden}
.bk-banner-text{max-width:720px}
.bk-banner h2{font-size:clamp(2.6rem,8vw,5.2rem);letter-spacing:.02em;line-height:1;margin:0 0 .6rem}
.bk-banner-lead{font-family:'Dancing Script',cursive;font-weight:700;font-size:clamp(1.6rem,3.4vw,2.2rem);color:var(--a1);line-height:1.2;margin:0 0 1rem}
.bk-banner .sub{max-width:560px}
/* Con immagine: foto a proporzioni originali (2:1) con il titolo sul cielo chiaro, a destra */
.bk-banner.has-img{padding:clamp(2.5rem,5vw,4rem) 0 clamp(2rem,4vw,3rem);background:var(--bg)}
.bk-banner-frame{position:relative;border-radius:22px;overflow:hidden;box-shadow:0 30px 60px -30px rgba(0,0,0,.55)}
.bk-banner-img,.bk-banner-img img{display:block;width:100%}
.bk-banner-img img{height:auto}
.bk-banner.has-img .bk-banner-text{position:absolute;left:51%;right:4%;top:11%;max-width:none;color:#2b1810;text-shadow:0 1px 14px rgba(255,243,230,.65)}
.bk-banner.has-img .kicker{display:none}
.bk-banner.has-img h2{font-size:clamp(2rem,4.6vw,4rem);color:#2b1810;margin:0 0 .3rem}
.bk-banner.has-img .bk-banner-lead{color:#8a1f3d;font-size:clamp(1.3rem,2.6vw,2rem);margin:0}
.bk-banner-sub{margin-top:1.4rem;max-width:640px}

/* ---------- B. Collana ---------- */
.bk-series{
  --bk-ink:#fafaf9; --bk-text:#d6d3d1; --bk-muted:#a8a29e; --bk-line:rgba(255,255,255,.14);
  --bk-card:rgba(255,255,255,.045); --bk-accent:#ff8fb1;
  padding:clamp(3.5rem,7vw,6rem) 0;color:var(--bk-text);
  background:radial-gradient(900px 420px at 12% 0,rgba(255,45,117,.2),transparent 62%),
             radial-gradient(700px 420px at 96% 100%,rgba(255,90,60,.13),transparent 60%),#0d0709;
}
.bk-series-head{margin-bottom:clamp(2rem,4vw,3rem);max-width:640px}
.bk-kicker{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--bk-accent);margin-bottom:.8rem}
.bk-series-head h3{color:#fff;font-size:clamp(2rem,5.5vw,3.6rem);letter-spacing:.04em;line-height:1.02;margin:0 0 .7rem}
.bk-series-head p{color:var(--bk-muted);font-size:1.05rem;margin:0}

.bk-volume{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(1.5rem,3.5vw,3.2rem);align-items:start}
.bk-volume.solo{grid-template-columns:minmax(0,1fr);max-width:680px}
.bk-volume + .bk-volume{margin-top:clamp(2.5rem,5vw,4rem);padding-top:clamp(2.5rem,5vw,4rem);border-top:1px solid var(--bk-line)}

.bk-trans-title{font-size:.75rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--bk-accent);margin:0 0 1rem;display:flex;align-items:center;gap:.8rem;line-height:1.3}
.bk-trans-title::after{content:"";flex:1;height:1px;background:var(--bk-line)}
.bk-trans-list{display:grid;gap:1rem}

/* ---------- C. Altre pubblicazioni ---------- */
.bk-others{background:var(--soft);padding:clamp(3.5rem,7vw,6rem) 0}
.bk-others-head{margin-bottom:clamp(2rem,4vw,3rem)}
.bk-others-head h3{font-size:clamp(1.7rem,4vw,2.6rem);letter-spacing:.04em;margin:0}
.bk-others-head h3::after{content:"";display:block;width:56px;height:3px;border-radius:3px;background:var(--grad);margin-top:.9rem}
.bk-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:1.6rem;align-items:stretch}
.bk-others .center{margin-top:3rem}

/* ---------- Scheda libro (componente) ---------- */
.bk{display:grid;min-width:0;color:var(--bk-text)}
.bk-body{min-width:0;display:flex;flex-direction:column}
.bk-cover{position:relative;align-self:start}
.bk-cover img{display:block;width:100%;height:auto;border-radius:3px 9px 9px 3px;box-shadow:0 26px 40px -20px rgba(0,0,0,.6),0 2px 6px rgba(0,0,0,.25)}
.bk-cover-link{display:block;transition:transform .3s ease-out}
.bk-cover-link:hover{transform:translateY(-5px)}

.bk-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin:0 0 .7rem;font-size:.74rem}
.bk-vol{font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--bk-accent)}
.bk-lang{display:inline-flex;align-items:center;gap:.35rem;font-weight:600;color:var(--bk-text);border:1px solid var(--bk-line);padding:.18rem .65rem;border-radius:99px}
.bk-title{color:var(--bk-ink);font-size:1.2rem;font-weight:800;letter-spacing:-.02em;line-height:1.2;margin:0}
.bk-subtitle{color:var(--bk-muted);font-size:.9rem;margin:.3rem 0 0}
.bk-tagline{font-style:italic;font-size:.95rem;line-height:1.5;color:var(--bk-text);margin:.8rem 0 0;padding-left:.8rem;border-left:2px solid var(--bk-accent)}
.bk .book-rating{margin-top:.9rem}
.bk .rc-link{color:var(--bk-muted)}
.bk .rc-empty{color:var(--bk-muted)}

.bk-buy{display:flex;flex-direction:column;gap:.5rem;margin-top:1rem}
.bk-buy-label{font-size:.78rem;font-weight:600;color:var(--bk-muted)}
.bk-buy-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:.5rem}
.bk-fmt{font-size:.78rem;color:var(--bk-muted)}
.bk-fmt i{color:var(--bk-accent)}
.bk-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.65rem 1.1rem;border-radius:99px;border:1.5px solid transparent;font:600 .85rem/1.2 'Inter',sans-serif;text-decoration:none;cursor:pointer;transition:.25s;text-align:center;background:none;color:var(--bk-ink)}
.bk-btn.primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px -8px rgba(255,45,117,.6)}
.bk-btn.primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px -8px rgba(255,45,117,.65)}
.bk-btn.alt{border-color:var(--a1);color:var(--bk-ink)}
.bk-btn.alt:hover{background:var(--a1);color:#fff;transform:translateY(-2px)}
.bk-btn.ghost{border-color:var(--bk-line);color:var(--bk-ink)}
.bk-btn.ghost:hover{border-color:var(--bk-ink);transform:translateY(-2px)}
.bk-btn:focus-visible,.bk-cover-link:focus-visible,.bk .rc-link:focus-visible{outline:2px solid var(--a1);outline-offset:3px}
.bk .review-btn{margin-top:.6rem;width:100%}

/* Fascia NOVITÀ: sporge dall'angolo in alto a sinistra, senza coprire il titolo */
.bk-novita{position:absolute;top:-.7rem;left:-.7rem;z-index:2;background:linear-gradient(120deg,#ffb020,#ff5a3c);color:#1a0d05;
  font:800 .66rem/1 'Inter',sans-serif;letter-spacing:.16em;text-transform:uppercase;padding:.45rem .8rem;border-radius:4px;
  box-shadow:0 8px 16px -6px rgba(0,0,0,.55);pointer-events:none}

/* varianti */
.bk-feature{grid-template-columns:clamp(150px,19vw,230px) minmax(0,1fr);gap:clamp(1.2rem,2.5vw,2rem);align-items:start}
.bk-feature .bk-title{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.12}
.bk-feature .bk-tagline{font-size:1.02rem}
.bk-feature .bk-buy,.bk-feature .review-btn{max-width:360px}

.bk-compact{grid-template-columns:92px minmax(0,1fr);gap:1rem;padding:1rem;border:1px solid var(--bk-line);border-radius:16px;background:var(--bk-card)}
.bk-compact .bk-title{font-size:1.02rem}
.bk-compact .bk-tagline{font-size:.84rem;margin-top:.6rem}
.bk-compact .bk-meta{margin-bottom:.5rem}
.bk-compact .bk-btn{padding:.55rem .9rem;font-size:.8rem}
.bk-compact .bk-buy-row{grid-template-columns:repeat(auto-fit,minmax(100px,1fr))}
.bk-compact .bk-novita{top:-.95rem;left:0;padding:.3rem .55rem;font-size:.56rem;border-radius:4px 4px 0 0}

.bk-grid .bk{grid-template-rows:auto 1fr;gap:1.4rem;padding:1.6rem;border:1px solid var(--bk-line);border-radius:20px;background:var(--bk-card)}
.bk-grid .bk-cover{width:min(100%,210px);justify-self:center;align-self:end;margin-top:.4rem}
.bk-grid .book-rating{margin-top:auto;padding-top:.9rem}
.bk-grid .bk-title{font-size:1.25rem}

[data-theme="light"] .bk-others .bk{box-shadow:0 1px 2px rgba(0,0,0,.04),0 14px 30px -18px rgba(0,0,0,.18)}

/* ---------- Responsive ---------- */
@media (max-width:820px){
  .bk-banner.has-img .bk-banner-text{position:static;color:inherit;text-shadow:none;padding-top:1.4rem}
  .bk-banner.has-img .kicker{display:inline-block;color:var(--a1)}
  .bk-banner.has-img h2{color:var(--ink);font-size:clamp(2.4rem,11vw,3.6rem)}
  .bk-banner.has-img .bk-banner-lead{color:var(--a1)}
  .bk-banner-frame{overflow:visible;border-radius:0;box-shadow:none}
  .bk-banner-img img{border-radius:16px;box-shadow:0 24px 44px -26px rgba(0,0,0,.55)}
  .bk-banner-sub{margin-top:.8rem}
}
@media (max-width:960px){
  .bk-volume{grid-template-columns:minmax(0,1fr)}
  .bk-volume.solo{max-width:none}
}
@media (max-width:620px){
  .bk-feature{grid-template-columns:minmax(0,1fr);justify-items:start}
  .bk-feature .bk-cover{width:min(62%,230px)}
  .bk-feature .bk-buy,.bk-feature .review-btn{max-width:none}
  .bk-feature .bk-body{width:100%}
  .bk-compact{grid-template-columns:78px minmax(0,1fr);padding:.9rem}
  .bk-grid .bk{padding:1.3rem}
}
@media (prefers-reduced-motion:reduce){
  .bk-cover-link,.bk-btn{transition:none}
  .bk-cover-link:hover,.bk-btn:hover{transform:none}
}