/* 📚 Thư viện: thẻ sách (thu-vien.html) · mỗi cuốn thu gọn, bấm mới sổ ra */
.tv-dk{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 12px;margin:0 0 14px;color:var(--muted);font-size:.9rem}
.tv-ds{display:grid;gap:10px;margin-top:6px}
.tv-s{background:var(--card);border:1.5px solid color-mix(in srgb,var(--k) 28%,var(--line));border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.tv-s[open]{border-color:color-mix(in srgb,var(--k) 55%,var(--line))}
.tv-s>summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:58px minmax(0,1fr) auto;column-gap:14px;row-gap:2px;align-items:start;padding:12px 14px}
.tv-s>summary::-webkit-details-marker{display:none}
.tv-s>summary:hover{background:color-mix(in srgb,var(--k) 5%,var(--card))}
.tv-bia{grid-column:1;grid-row:1/span 3;align-self:stretch;min-height:64px;border-radius:4px 10px 10px 4px;padding:6px 4px 6px 9px;display:grid;place-items:center;text-align:center;color:#fff;background:linear-gradient(155deg,var(--k),color-mix(in srgb,var(--k) 62%,#000));box-shadow:inset 5px 0 0 rgba(0,0,0,.2),0 2px 8px rgba(0,0,0,.16);font-family:var(--serif);font-size-adjust:.5;font-weight:700;font-size:.8rem;line-height:1.15;overflow-wrap:anywhere}
.tv-s.khoa .tv-bia{filter:saturate(.5) brightness(.95)}
.sec .tv-s h3{grid-column:2;margin:0;font-family:var(--serif);font-size-adjust:.5;font-size:1.12rem;line-height:1.3}
.sec .tv-s h3::before{display:none}
.tv-kx{grid-column:3;grid-row:1;flex:none;font-size:.76rem;font-weight:800;color:var(--k);border:1px solid currentColor;border-radius:999px;padding:2px 10px;margin-top:2px;white-space:nowrap}
.tv-kx::after{content:"Xem ▾"}
.tv-s[open] .tv-kx::after{content:"Thu gọn ▴"}
.tv-tg,.tv-nhan{grid-column:2/4;display:block}
.sec .tv-s p.tv-phu{color:var(--muted);font-style:italic;font-size:.88rem;margin-bottom:2px}
.sec .tv-s p.tv-xb{font-size:.86rem;color:var(--muted)}
.tv-tg{font-size:.88rem}
.tv-tg b{color:var(--k)}
.tv-nhan{display:flex;flex-wrap:wrap;gap:5px;margin-top:4px}
.tv-nhan span{font-size:.74rem;font-weight:700;color:var(--muted);padding:1px 8px;border-radius:999px;background:color-mix(in srgb,var(--k) 9%,var(--card))}
.tv-nd{min-width:0;padding:10px 16px 14px 86px;border-top:1px dashed color-mix(in srgb,var(--k) 30%,var(--line))}
.sec .tv-s p{margin:0 0 8px}
.tv-dung{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:.84rem}
.tv-dung>b{color:var(--muted);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;margin-right:2px}
.tv-dung a{padding:3px 10px;border-radius:999px;text-decoration:none;color:var(--ink);font-weight:600;background:color-mix(in srgb,var(--k) 11%,var(--card));border:1px solid color-mix(in srgb,var(--k) 32%,var(--card))}
.tv-dung a:hover{background:color-mix(in srgb,var(--k) 22%,var(--card))}
.tv-kinh{list-style:none;margin:0 0 10px;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(90px,1fr));gap:6px}
.tv-kinh a{display:block;padding:6px 9px;border-radius:10px;text-decoration:none;color:var(--ink);background:color-mix(in srgb,var(--k) 9%,var(--card));border:1px solid color-mix(in srgb,var(--k) 28%,var(--card))}
.tv-kinh a:hover{background:color-mix(in srgb,var(--k) 20%,var(--card))}
.tv-kinh b{display:block;font-size:.92rem;color:var(--k)}
.tv-kinh small{display:block;color:var(--muted);font-size:.74rem}
.sec .tv-s p.tv-bq{font-size:.84rem;color:var(--muted);margin-bottom:10px}
.tv-nut{display:flex;flex-wrap:wrap;gap:8px}
@media(max-width:560px){
  .tv-s>summary{grid-template-columns:8px minmax(0,1fr) auto;column-gap:11px;padding:11px 12px}
  .tv-bia{min-height:0;padding:0;border-radius:4px;box-shadow:none}
  .tv-bia>span{display:none}
  .sec .tv-s h3{font-size:1.04rem}
  .tv-nd{padding:10px 12px 12px}
  .tv-nut .btn{flex:1 1 auto;justify-content:center}
}