/* Pathfinder Publication: styles for the book pages. Load after assets/theme.css. */
/* hero */
.hero{padding:44px 0 40px;background:radial-gradient(circle at 92% -10%,rgba(244,185,63,.38),transparent 55%),var(--cream)}
.hero .wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:center}
.hero-covers{display:flex;gap:18px;justify-content:center;align-items:flex-end;position:relative}
.hero-covers .bk{position:relative;flex:0 1 auto;max-width:300px}
.hero-covers .bk img{border-radius:4px 8px 8px 4px;box-shadow:0 30px 60px rgba(36,26,18,.25),0 4px 12px rgba(36,26,18,.1)}
.hero-covers.two .bk{max-width:230px}
.badge-rank{position:absolute;top:-16px;right:-16px;width:72px;height:72px;border-radius:50%;background:var(--red);color:#fff;font-family:var(--head);font-weight:700;font-size:26px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(216,16,42,.35);border:3px solid var(--gold);text-decoration:none}
.badge-rank:hover{text-decoration:none;transform:scale(1.04)}
.hero .sub{margin:8px 0 0;font-size:15px;color:var(--ink-soft);font-weight:600}
.hero .tag{margin-top:14px;font-size:16.5px;color:var(--ink-soft);max-width:56ch}
.hero .pills{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.hero .by{margin-top:20px;display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.hero .by .au{display:flex;gap:10px;align-items:center;font-size:13.5px;color:var(--ink-soft)}
.hero .by img,.hero .by .ini{width:42px;height:42px;border-radius:50%;object-fit:cover;object-position:50% 20%;border:2px solid var(--gold);background:var(--cream-deep);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;flex:none}
.hero .by b{color:var(--ink);display:block}
.buy{margin-top:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.buy .now{font-weight:800;color:var(--red);font-size:30px;line-height:1}
.buy .was{font-size:14px;color:var(--ink-soft);text-decoration:line-through;margin-left:8px}
.buy .save{background:var(--gold);color:var(--ink);font-size:12px;font-weight:700;padding:4px 9px;border-radius:6px;margin-left:8px;vertical-align:4px;white-space:nowrap;display:inline-block}
.buy .acts{display:flex;gap:10px;flex-wrap:wrap}
.preview{display:inline-block;margin-top:14px;font-size:14px;font-weight:700;color:var(--red-deep)}
.inset-note{margin-top:14px;font-size:13.5px;color:var(--ink-soft);background:var(--gold-soft);border:1px solid var(--gold);border-radius:10px;padding:10px 14px}

/* proof strip */
.proof{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:28px}
.pf{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:20px 20px 18px}
.pf b{display:block;font-family:var(--head);font-size:32px;font-weight:700;color:var(--red);line-height:1.05}
.pf span{display:block;font-size:13.5px;color:var(--ink-soft);margin-top:6px}

/* combo: what each book does */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.duo .card{display:grid;grid-template-columns:120px minmax(0,1fr);gap:20px;align-items:center}
.duo img{border-radius:4px 7px 7px 4px;box-shadow:0 12px 26px rgba(36,26,18,.2)}
.duo h3{font-size:18px;margin:6px 0}
.duo p{margin:0 0 10px;color:var(--ink-soft);font-size:14.5px}
.duo .pr{font-weight:800;color:var(--red)}

/* at a glance (dark) */
.glance{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:26px;align-items:start}
.kv .r{display:grid;grid-template-columns:170px minmax(0,1fr);gap:16px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.16);font-size:14.5px}
.kv .r:last-child{border-bottom:0}
.kv .k{color:var(--gold);font-family:var(--mono);font-size:12.5px;letter-spacing:.03em;text-transform:uppercase;padding-top:2px}
.kv .r div:last-child{color:#f1e9dc}
.rate{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:18px 20px;margin-bottom:14px}
.rate .big{font-family:var(--head);font-size:40px;font-weight:700;color:var(--gold);line-height:1}
.rate .row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.14);color:#f1e9dc;font-size:14px}
.rate .row:last-child{border-bottom:0}
.rate .row b{color:#fff}
.rate .src{font-size:12px;color:#a8998a;margin-top:8px}

/* why: numbered cards */
.why{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.why .card h3{font-size:17px;margin:8px 0 6px}
.why .card p{margin:0;color:var(--ink-soft);font-size:14.5px}
.draft-tag{display:inline-block;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;background:var(--gold);color:var(--ink);margin-left:10px;vertical-align:4px;font-family:var(--body);letter-spacing:0;text-transform:none}

/* highlight (ranking) */
.hl-card{display:grid;grid-template-columns:200px minmax(0,1fr);gap:40px;align-items:center;background:linear-gradient(135deg,var(--paper),var(--gold-soft));border:1px solid var(--gold);border-radius:var(--r2);padding:30px 36px}
.hl-card img{border-radius:4px 8px 8px 4px;box-shadow:0 20px 44px rgba(36,26,18,.22)}
.hl-card .sec-sub{margin:10px 0}
.hl-card .note{margin:0 0 18px}

/* look inside */
.gallery{display:flex;gap:20px;overflow-x:auto;padding:10px 4px 26px;scroll-snap-type:x mandatory}
.pg{flex:none;width:250px;scroll-snap-align:start;text-align:left}
.pg .sheet{border-radius:8px;overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:0 10px 26px rgba(36,26,18,.1);transition:transform .3s,box-shadow .3s}
.pg:hover .sheet{transform:translateY(-6px);box-shadow:0 22px 50px rgba(36,26,18,.18)}
.pg .cap{font-size:13.5px;font-weight:700;margin-top:12px}.pg .cap2{font-size:12.5px;color:var(--ink-soft)}
.lb{position:fixed;inset:0;background:rgba(36,26,18,.82);display:none;align-items:center;justify-content:center;z-index:60;padding:30px}
.lb.on{display:flex}
.lb img{max-height:92vh;width:auto;border-radius:8px}
.lb button{position:absolute;top:20px;right:24px;width:40px;height:40px;border-radius:50%;background:var(--paper);font-size:20px}

/* contents */
.toc{background:var(--paper);border:1px solid var(--line);border-radius:var(--r2);padding:6px 24px}
.toc-tabs{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.toc-tabs button{font-size:13.5px;font-weight:600;padding:8px 16px;border-radius:999px;background:var(--paper);border:1px solid var(--line);color:var(--ink-soft)}
.toc-tabs button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.ch{border-bottom:1px dashed var(--line)}.ch:last-child{border-bottom:0}
.ch>button{display:grid;grid-template-columns:52px minmax(0,1fr) 22px;gap:12px;align-items:center;width:100%;padding:14px 0;text-align:left}
.ch .no{font-family:var(--mono);font-size:12.5px;font-weight:700;color:var(--red-deep)}
.ch .t{font-weight:600;font-size:15px}
.ch .pp{font-size:12.5px;color:var(--ink-mute);font-variant-numeric:tabular-nums;white-space:nowrap}
.ch .pl{color:var(--gold-deep);font-size:20px;transition:transform .25s}
.ch.open .pl{transform:rotate(45deg)}
.ch .secs{display:none;padding:0 0 14px 64px;columns:2 260px;column-gap:30px}
.ch.open .secs{display:block}
.ch .secs div{break-inside:avoid;font-size:13.5px;padding:3px 0;color:var(--ink-soft);display:flex;justify-content:space-between;gap:10px}
.ch .secs i{font-style:normal;font-family:var(--mono);font-size:12px;color:var(--ink-mute);margin-right:8px}
.ch.flat .pl{visibility:hidden}

/* exams it covers */
.exs{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.exc{background:var(--cream-deep);border:1px solid var(--line-2);border-radius:12px;padding:16px 18px;color:inherit;display:flex;flex-direction:column;gap:8px;transition:all .2s}
.exc:hover{text-decoration:none;border-color:var(--gold-deep);background:#efe3c9}
.exc .top{display:flex;gap:12px;align-items:center}
.exc .lg{width:42px;height:42px;border-radius:10px;background:var(--paper);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;padding:5px;flex:none;font-weight:800;font-size:11px}
.exc .lg img{max-width:100%;max-height:100%;object-fit:contain}
.exc b{font-family:var(--head);font-size:16px}
.exc .st{font-size:13.5px;color:var(--ink);font-weight:600}
.exc .st::before{content:"✓";color:var(--green);font-weight:800;margin-right:8px}
.exc .go{font-size:13.5px;font-weight:700;color:var(--red-deep);margin-top:auto}

/* study path */
.path{display:flex;gap:12px;align-items:stretch;flex-wrap:wrap}
.step{flex:1 1 200px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:grid;grid-template-columns:58px minmax(0,1fr);gap:14px;align-items:center;color:inherit}
.step:hover{text-decoration:none;border-color:var(--gold-deep)}
.step.this{border:2px solid var(--gold);background:var(--gold-soft)}
.step img{border-radius:3px 5px 5px 3px;box-shadow:0 6px 14px rgba(36,26,18,.18)}
.step .num{display:block}
.step b{display:block;font-size:14px;line-height:1.3;margin-top:4px}
.arrow{align-self:center;color:var(--gold-deep);font-size:22px;font-weight:800}

/* sets */
.sets{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.setc{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;color:inherit;display:flex;flex-direction:column}
.setc:hover{border-color:var(--gold-deep);box-shadow:var(--shadow)}
.setc .main{color:inherit;display:flex;flex-direction:column;flex:1}.setc .main:hover{text-decoration:none}
.setc .mk{display:flex;gap:6px;flex-wrap:nowrap;padding:0 14px 14px}.setc .mk .btn{flex:1 1 auto;min-width:0;padding:8px 6px;font-size:12.5px}
.setc .ph{aspect-ratio:4/3;background:var(--cream);border-bottom:1px solid var(--line);container-type:size;overflow:hidden;position:relative}
/* every set drawn as a fanned stack of its covers that always spans the card: one row up to 5 books, two staggered rows from 6 */
.setc .ph img{position:absolute;aspect-ratio:3/4;width:auto;object-fit:cover;border-radius:2px 4px 4px 2px;box-shadow:-2px 6px 14px rgba(36,26,18,.22)}
.setc .bd{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.setc b{font-size:14px;line-height:1.35}
.setc .pr{margin-top:auto;font-weight:800;color:var(--red)}.setc .pr s{color:var(--ink-mute);font-weight:400;font-size:12.5px;margin-left:6px}

/* reviews and videos (same as the home page) */
.revs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;align-items:start}
.rv{margin:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:22px;display:flex;flex-direction:column}
.rv h4{font-family:var(--body);font-size:15px;font-weight:700;margin:8px 0 0}
.rv blockquote{margin:10px 0 0;font-size:15px;line-height:1.6;color:var(--ink);height:calc(1.6em * 6);overflow:hidden;display:-webkit-box;-webkit-line-clamp:6;-webkit-box-orient:vertical}
.rv blockquote::before{content:"“";font-family:var(--head);font-size:40px;line-height:0;color:var(--gold-deep);vertical-align:-14px;margin-right:4px}
.rv.open blockquote{height:auto;display:block;-webkit-line-clamp:unset}
.rv .more{align-self:flex-start;margin:6px 0 14px;font-size:13.5px;font-weight:700;color:var(--red-deep);visibility:hidden}
.rv .more.on{visibility:visible}
.rv figcaption{margin-top:auto;font-size:12.5px;color:var(--ink-mute)}
.vids{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.vids.shorts{grid-template-columns:repeat(2,minmax(0,220px))}
.vid{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:12px 12px 16px}
.vid:hover{border-color:var(--gold-deep);box-shadow:var(--shadow)}
.vid b{display:block;font-size:14px;line-height:1.35;margin-top:12px}
.vid span{font-size:12.5px;color:var(--ink-mute)}
.vthumb,.vframe{display:block;position:relative;width:100%;aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:#000}
.vids.shorts .vthumb,.vids.shorts .vframe{aspect-ratio:9/16}
.vthumb img{width:100%;height:100%;object-fit:cover;opacity:.9}
.vthumb .play{position:absolute;inset:0;margin:auto;width:56px;height:40px;border-radius:10px;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px}
.vframe iframe{width:100%;height:100%;border:0}

/* authors, classes, faq */
.teachers{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:24px}
.tc{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:22px 16px;text-align:center}
.tc .ph{width:120px;height:120px;border-radius:50%;margin:0 auto 14px;border:4px solid var(--gold);overflow:hidden;background:var(--cream-deep);display:flex;align-items:center;justify-content:center;color:var(--ink-mute);font-size:24px;font-weight:800}
.tc .ph img{width:100%;height:100%;object-fit:cover;object-position:50% 20%}
.tc b{display:block;font-family:var(--head);font-size:16.5px;font-weight:600}
.tc span{display:block;font-size:13px;color:var(--ink-soft);margin-top:4px}
.classes{margin-top:22px;background:var(--gold-band);border:2px solid var(--gold-deep);border-radius:var(--r2);padding:28px 30px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;box-shadow:0 14px 36px rgba(201,145,15,.25)}
.classes h3{font-size:22px;margin:10px 0 6px}
.classes p{margin:0;color:var(--ink-soft)}
.cl-acts{display:grid;grid-template-columns:1fr;gap:10px}
.cl-acts .btn{font-size:14px;padding:11px 16px}
.faq{background:var(--paper);border:1px solid var(--line);border-radius:var(--r2);padding:4px 26px}
.fq{border-bottom:1px dashed var(--line)}.fq:last-child{border-bottom:0}
.fq button{display:flex;justify-content:space-between;gap:16px;width:100%;padding:18px 0;font-size:16px;font-weight:600}
.fq .a{display:none;font-size:15px;color:var(--ink-soft);padding:0 0 18px;max-width:780px}
.fq.open .a{display:block}
.fq .plus{color:var(--gold-deep);font-size:22px;transition:transform .3s}.fq.open .plus{transform:rotate(45deg)}

@media (max-width:900px){
  .hero{padding:30px 0}
  .hero .wrap{grid-template-columns:1fr;gap:28px}
  .hero-covers .bk{max-width:200px}.hero-covers.two .bk{max-width:150px}
  .proof{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.pf{padding:16px}.pf b{font-size:26px}
  .duo{grid-template-columns:1fr}.duo .card{grid-template-columns:90px minmax(0,1fr)}
  .glance{grid-template-columns:1fr}.kv .r{grid-template-columns:1fr;gap:3px}
  .why{grid-template-columns:1fr}
  .hl-card{grid-template-columns:1fr;padding:22px 18px;gap:22px}.hl-card img{max-width:160px;margin:0 auto}
  .ch .secs{padding-left:0;columns:1}
  .toc{padding:4px 16px}
  .arrow{display:none}
  .revs{grid-template-columns:1fr}
  .sets{grid-template-columns:1fr 1fr;gap:10px}.setc .bd{padding:10px 12px 12px}.setc b{font-size:12.5px}.setc .pr{font-size:14px}.setc .mk{padding:0 10px 10px;gap:5px;flex-wrap:wrap}.setc .mk .btn{flex:1 1 100%;padding:7px 8px;font-size:12.5px}
  .vids{grid-template-columns:1fr 1fr}
  .teachers{grid-template-columns:1fr 1fr}.tc .ph{width:96px;height:96px}
  .classes{grid-template-columns:1fr;padding:22px 18px}.cl-acts{grid-template-columns:1fr}
  .faq{padding:4px 16px}
}

/* about the publication (same block as the home page) */
.about-band{background:linear-gradient(135deg,var(--paper) 0%,var(--cream-deep) 100%);border-top:3px solid var(--gold);border-bottom:3px solid var(--gold);margin-top:64px;padding:56px 0}
.about{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;align-items:center}
.about .covs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.about .covs a{display:block;border-radius:4px 8px 8px 4px;overflow:hidden;aspect-ratio:400/520;box-shadow:0 10px 24px rgba(36,26,18,.18),0 2px 5px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s}
.about .covs a:hover{transform:translateY(-6px);box-shadow:0 26px 50px rgba(36,26,18,.24)}
.about .covs img{width:100%;height:100%;object-fit:cover}
.about p{font-size:16px;color:var(--ink-soft);margin:0 0 14px;line-height:1.65}
.about p b{color:var(--ink);font-weight:700}
.about .facts{display:flex;gap:28px;margin:22px 0 28px;flex-wrap:wrap}
.about .facts b{display:block;font-family:var(--head);font-size:28px;font-weight:700;color:var(--red)}.about .facts span{font-size:13px;color:var(--ink-soft)}
@media (max-width:900px){.about-band{padding:36px 0}.about{grid-template-columns:1fr;gap:32px}.about .covs{gap:14px 12px}}

/* ===== same changes as the exam pages ===== */
.btn.pathfinder { background: #f4b93f; color: #241a12; text-decoration: none; }
.btn.pathfinder:hover { background: #fbd16d; color: #241a12; text-decoration: none; }
.btn.disabled-buy { opacity: 0.65; cursor: not-allowed; pointer-events: none; }
.final { display: none; }
.faq-normal { text-transform: none !important; }

/* hero authors box */
.hero .by { display: block; margin-top: 20px; font-size: 14px; line-height: 1.6; color: var(--ink-soft); border-left: 3px solid var(--gold); padding-left: 12px; }
.hero .by h3 { font-family: 'Roboto Slab', Georgia, serif; font-size: 20px; font-weight: 700; color: #5b4e3f; margin: 0 0 10px; }
.hero .by .author-details { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }

/* Know more links (authors) */
.author-know-more,
.teacher-know-more {
    display: inline-block;
    margin-top: 8px;
    font-size: 14px;
    font-weight: 700;
}

/* videos: one column on small screens, like the home page */
@media (max-width:900px){ .vids.shorts{grid-template-columns:1fr} }
@media (max-width:520px){ .vids{grid-template-columns:1fr} }