/* Books v1.5 — aligned with the shared systems-blueprint design tokens. */
.books-index,.book-detail{padding-block:clamp(48px,7vw,100px) clamp(80px,10vw,140px)}
.books-index>h1,.book-detail h1{font-size:clamp(2.7rem,6vw,5.7rem);letter-spacing:-.055em;line-height:1.03;max-width:950px}
.books-index>.books-subtitle{font-size:clamp(1.05rem,2vw,1.3rem);color:var(--muted);max-width:680px;margin-top:1.4rem}
.books-kicker,.book-detail .eyebrow{display:inline-flex;align-items:center;gap:.55rem;text-transform:uppercase;font-size:.76rem;font-weight:800;letter-spacing:.15em;color:var(--accent-ink);margin-bottom:1.1rem}
.books-kicker:before,.book-detail .eyebrow:before{content:'';width:21px;height:2px;background:var(--accent)}
.books-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.4vw,30px);margin-top:clamp(35px,5vw,65px)}
.book-card{display:flex;flex-direction:column;min-width:0;padding:0;overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.book-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 22px 55px -28px rgba(25,40,85,.4)}
.book-card>a:first-child{color:inherit;text-decoration:none}.book-card-media{min-height:320px;display:grid;place-items:center;padding:35px;background:linear-gradient(145deg,var(--surface-2),var(--paper));position:relative;overflow:hidden}
.book-card-media:after{content:'';position:absolute;inset:auto 0 0;height:1px;background:var(--line)}
.book-card-media img{width:auto;max-width:100%;height:270px;object-fit:contain;filter:drop-shadow(12px 16px 12px rgba(0,0,0,.18));transition:transform .3s ease}.book-card:hover img{transform:translateY(-5px) rotate(-1deg)}
.book-card-content{padding:25px 25px 10px;flex:1}.book-card h2{font-size:clamp(1.3rem,2vw,1.7rem);line-height:1.18;margin:.35rem 0 .6rem}.book-card-author{color:var(--muted);font-size:.92rem}.book-card .book-button{margin:12px 25px 25px;align-self:flex-start}
.book-button,.reader-controls button{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:var(--accent);color:#fff!important;text-decoration:none;border:1px solid transparent;border-radius:var(--r-md);font:700 .9rem/1.2 var(--font-body);padding:14px 20px;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s}.book-button:hover,.reader-controls button:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 9px 20px -12px var(--accent)}.reader-controls button:disabled{opacity:.4;cursor:not-allowed}
.books-empty{padding:45px;background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--r-lg);color:var(--muted);grid-column:1/-1}
.book-back{display:inline-flex;gap:8px;align-items:center;color:var(--muted);font-weight:650;text-decoration:none;margin-bottom:35px}.book-back:hover{color:var(--accent-ink)}
.book-intro{display:grid;grid-template-columns:minmax(220px,.85fr) minmax(0,1.35fr);gap:clamp(30px,6vw,90px);align-items:center;margin:0 0 clamp(70px,9vw,120px)}
.book-cover-stage{display:grid;place-items:center;padding:clamp(30px,5vw,65px);min-height:390px;background:radial-gradient(circle at 30% 20%,var(--surface),var(--surface-2));border:1px solid var(--line);border-radius:var(--r-lg);position:relative;overflow:hidden}
.book-cover-stage:before{content:'';position:absolute;width:75%;aspect-ratio:1;border:1px solid var(--line-strong);border-radius:50%;opacity:.6}
.book-cover{position:relative;width:100%;max-width:340px;max-height:470px;object-fit:contain;border-radius:4px 12px 12px 4px;box-shadow:15px 24px 32px -15px rgba(0,0,0,.35);transform:rotate(-3deg)}
.book-intro-copy>p:not(.eyebrow){color:var(--muted);font-size:1.06rem;line-height:1.85;max-width:670px}.book-meta{font-size:.87rem!important;font-weight:650;letter-spacing:.025em;margin-top:25px}
.book-section{margin-top:clamp(60px,8vw,110px);padding-top:clamp(30px,5vw,60px);border-top:1px solid var(--line)}.book-section-heading{font-size:clamp(2rem,4vw,3.5rem);margin-bottom:15px}.book-section-description{color:var(--muted);max-width:680px}
.book-reader{width:100%;max-width:750px;margin:40px auto 0;padding:clamp(16px,3vw,32px);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);perspective:1600px}
.book-leaf{aspect-ratio:.71;min-height:380px;max-height:800px;background:#fff;box-shadow:6px 8px 26px rgba(0,0,0,.16);border:1px solid #e4e4e4;border-radius:4px 13px 13px 4px;transform-origin:left center;transition:transform .38s ease,opacity .38s ease;overflow:hidden}.book-leaf img,.book-leaf iframe{width:100%;height:100%;object-fit:contain;border:0;background:#fff}.book-leaf.turn{transform:rotateY(-85deg);opacity:.35}
.reader-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:24px}.reader-controls [data-count]{font-weight:800;font-variant-numeric:tabular-nums;color:var(--muted)}.book-providers{display:flex;gap:12px;flex-wrap:wrap;margin-top:25px}.book-preview-notice{padding:18px 22px;border:1px solid var(--line-strong);border-left:3px solid var(--signal);border-radius:var(--r-md);background:var(--surface);line-height:1.65}
@media(max-width:950px){.books-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:700px){.books-grid{grid-template-columns:1fr}.book-intro{grid-template-columns:1fr}.book-cover-stage{min-height:300px}.book-cover{max-height:320px;width:auto}.book-reader{padding:12px}.book-leaf{min-height:300px}.reader-controls button{padding:11px 13px;font-size:.8rem}}@media(prefers-reduced-motion:reduce){.book-leaf,.book-card,.book-card img,.book-button{transition:none!important}}