/* NAVI V8.1 — biblioteca de livros: cards + download controlado pelo Admin */
.book-grid.v81-book-grid{align-items:stretch;gap:18px}
.v81-book-card{padding:0!important;min-height:0!important;display:flex;flex-direction:column;overflow:hidden;position:relative;border-radius:24px;border:1px solid rgba(179,183,191,.12);background:linear-gradient(160deg,rgba(16,21,29,.96),rgba(8,13,18,.98));box-shadow:inset 0 1px rgba(255,255,255,.025);transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease}
.v81-book-card:hover{transform:translateY(-5px);border-color:rgba(0,229,255,.27);box-shadow:0 30px 80px rgba(0,0,0,.34)}
.v81-book-detail{display:flex;flex-direction:column;flex:1;color:inherit;text-decoration:none}
.v81-book-cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:radial-gradient(circle at 65% 28%,rgba(123,61,255,.20),transparent 34%),radial-gradient(circle at 22% 84%,rgba(0,229,255,.10),transparent 28%),#0a1017;border-bottom:1px solid rgba(179,183,191,.10)}
.v81-book-cover>img{width:100%;height:100%;display:block;object-fit:cover;transition:transform .45s ease}
.v81-book-card:hover .v81-book-cover>img{transform:scale(1.025)}
.v81-book-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 48%,rgba(5,9,14,.62));pointer-events:none}
.v81-book-placeholder{height:100%;display:grid;place-items:center;align-content:center;gap:12px;padding:24px;text-align:center}.v81-book-placeholder img{width:74px;height:74px;object-fit:contain;opacity:.86;filter:drop-shadow(0 0 22px rgba(0,229,255,.14))}.v81-book-placeholder strong{font:700 12px/1.2 Montserrat,Inter,sans-serif;letter-spacing:.08em;text-transform:uppercase;color:#dbe7ec}.v81-book-placeholder span{font:500 10px/1.45 Inter,sans-serif;letter-spacing:.02em;color:#83929e;max-width:240px}
.v81-book-number{position:absolute;z-index:2;top:16px;right:17px;padding:7px 10px;border:1px solid rgba(255,255,255,.14);border-radius:999px;background:rgba(5,10,16,.62);backdrop-filter:blur(10px);font:600 9px/1 Montserrat,Inter,sans-serif;color:#dfe9ee}
.v81-book-content{padding:24px 26px 18px;display:flex;flex-direction:column;flex:1}.v81-book-theme{margin-bottom:11px;color:#67dcec;font:600 8px/1.3 Montserrat,Inter,sans-serif;letter-spacing:.13em;text-transform:uppercase}.v81-book-content h2{margin:0 0 8px;font-family:Montserrat,Inter,sans-serif;font-size:clamp(25px,2.1vw,34px);line-height:1.04;letter-spacing:-.035em}.v81-book-content h3{margin:0;color:#b4c1c9;font-size:13px;line-height:1.5;font-weight:500}.v81-book-content p{margin:0;color:#8e9da8;font-size:11px;line-height:1.7}.v81-book-preview{margin:16px 0 0;padding:14px 15px;border:1px solid rgba(0,229,255,.09);border-radius:13px;background:rgba(0,229,255,.025)}.v81-book-preview>span{display:block;margin-bottom:7px;color:#6edceb;font:700 7px/1 Montserrat,Inter,sans-serif;letter-spacing:.16em}.v81-book-preview p{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}.v81-book-meta{display:flex;justify-content:space-between;gap:10px;margin-top:auto;padding-top:20px;border-top:1px solid rgba(179,183,191,.09)}.v81-book-meta span{color:#7fd9eb;font-size:8px;letter-spacing:.08em;text-transform:uppercase}.v81-book-meta strong{color:#8ff0c4;font-size:9px;font-weight:600;text-align:right}.v81-book-meta strong.pending{color:#8997a2}.v81-book-open{display:flex;align-items:center;gap:7px;margin-top:15px;color:#74daf0;font:600 9px/1 Montserrat,Inter,sans-serif;letter-spacing:.05em;text-transform:uppercase}
.v81-book-actions{padding:0 26px 24px}.v81-download{min-height:46px;width:100%;display:flex;align-items:center;justify-content:center;gap:9px;border:1px solid rgba(0,229,255,.28);border-radius:13px;background:linear-gradient(135deg,rgba(0,229,255,.14),rgba(123,61,255,.14));color:#eefcff;text-decoration:none;font:700 10px/1 Montserrat,Inter,sans-serif;letter-spacing:.07em;text-transform:uppercase;transition:.22s ease}.v81-download:hover{transform:translateY(-1px);border-color:rgba(0,229,255,.55);background:linear-gradient(135deg,rgba(0,229,255,.23),rgba(123,61,255,.22))}.v81-download.pending{cursor:default;color:#75838e;border-color:rgba(179,183,191,.10);background:rgba(255,255,255,.025)}
@media(max-width:900px){.v81-book-cover{aspect-ratio:4/5}}@media(max-width:620px){.book-grid.v81-book-grid{gap:14px}.v81-book-content{padding:20px 20px 16px}.v81-book-actions{padding:0 20px 20px}.v81-book-cover{aspect-ratio:3/4}}

/* NAVI V8.3 — capa padrão usa a logo oficial */
.v81-book-placeholder.v83-logo-default img{width:min(82%,300px);height:auto;max-height:56%;object-fit:contain;opacity:1;filter:drop-shadow(0 18px 30px rgba(0,229,255,.10))}.v81-book-placeholder.v83-logo-default span{max-width:250px;font:600 10px/1.45 Montserrat,Inter,sans-serif;letter-spacing:.05em;text-transform:uppercase;color:#91a0aa}