/* Shared styles for the book store (from the AI Mastery sales page) */
/* ===================== DESIGN TOKENS ===================== */
:root{
  --navy:#1F2340;        /* from the eBook cover */
  --ink:#1B1E2E;
  --text:#3D4256;
  --muted:#5B6177;
  --indigo:#4F46E5;      /* main accent (buttons) */
  --indigo-dark:#4338CA;
  --indigo-50:#EEF0FF;
  --orange:#F5A623;      /* from the eBook cover */
  --orange-50:#FFF6E5;
  --line:#E6E8F0;
  --bg:#FFFFFF;
  --bg-soft:#F7F8FC;
  --radius:16px;
  --shadow:0 1px 2px rgba(20,22,40,.06),0 8px 24px rgba(20,22,40,.06);
  --shadow-lg:0 30px 60px -20px rgba(31,35,64,.45),0 12px 24px -12px rgba(31,35,64,.25);
  --max:1160px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;font-size:17px;line-height:1.65;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--indigo)}
h1,h2,h3{color:var(--ink);line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,5.2vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.7rem,3.6vw,2.6rem);font-weight:800}
h3{font-size:1.15rem;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.section{padding:88px 0}
.section--soft{background:var(--bg-soft)}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--indigo);margin-bottom:12px}
.section-head{max-width:720px;margin:0 auto 48px;text-align:center}
.section-head p{color:var(--muted);font-size:1.08rem}
.skip-link{position:absolute;left:-9999px;top:8px;background:var(--navy);color:#fff;padding:10px 16px;border-radius:8px;z-index:100}
.skip-link:focus{left:8px}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:6px}

/* ===================== BUTTONS ===================== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:14px 28px;border-radius:12px;font-weight:800;font-size:1rem;letter-spacing:.04em;text-decoration:none;cursor:pointer;border:0;transition:transform .15s ease,background .15s ease,box-shadow .15s ease;text-align:center}
.btn-primary{background:var(--indigo);color:#fff;box-shadow:0 8px 20px -6px rgba(79,70,229,.55)}
.btn-primary:hover{background:var(--indigo-dark);transform:translateY(-1px)}
.btn-lg{min-height:60px;padding:18px 36px;font-size:1.08rem}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--ink)}
.btn svg{width:20px;height:20px;flex:none}

/* ===================== HEADER / NAV ===================== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);-webkit-backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);text-decoration:none;font-size:1.08rem;letter-spacing:-.01em}
.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--navy);color:var(--orange);display:grid;place-items:center;font-size:.85rem;font-weight:800}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none;margin:0;padding:0}
.nav-links a{color:var(--text);text-decoration:none;font-weight:600;font-size:.95rem}
.nav-links a:hover{color:var(--indigo)}
.nav-links a.btn,.nav-links a.btn:hover{color:#fff}
.nav-cta{min-height:44px;padding:10px 18px;font-size:.88rem}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle svg{width:22px;height:22px;stroke:var(--ink)}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-links{position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 20px 20px;display:none;box-shadow:0 12px 24px -12px rgba(0,0,0,.15)}
  .nav-links.open{display:flex}
  .nav-links li a{display:block;padding:14px 4px;border-bottom:1px solid var(--line)}
  .nav-links li:last-child a{border:0;margin-top:12px;color:#fff}
}

/* ===================== HERO ===================== */
.hero{padding:64px 0 80px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 20%,var(--indigo-50) 0,transparent 45%),radial-gradient(circle at 70% 90%,var(--orange-50) 0,transparent 40%);z-index:-1}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:.82rem;font-weight:700;color:var(--navy);background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px}
.pill-dot{width:8px;height:8px;border-radius:50%;background:var(--orange)}
.hero h1 .accent{color:var(--indigo)}
.hero-sub{font-size:1.18rem;color:var(--text);max-width:600px}
.hero-intro{color:var(--muted);max-width:600px}
.hero-buy{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin:28px 0 14px}
.price-tag{display:flex;flex-direction:column;line-height:1.2}
.price-tag .label{font-size:.8rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.08em}
.price-tag .amount{font-size:2rem;font-weight:800;color:var(--ink)}
.secure-note{display:flex;align-items:center;gap:8px;font-size:.88rem;color:var(--muted);margin:0}
.secure-note svg{width:18px;height:18px;flex:none;stroke:var(--muted)}
.hero-cover{position:relative;justify-self:center;width:100%;max-width:400px;display:flex;flex-direction:column;align-items:center}

/* ---------- Realistic 3D book ---------- */
.book-stage{perspective:1800px;padding:10px 30px 34px;position:relative;display:flex;justify-content:center;width:100%}
.book-stage::after{content:"";position:absolute;left:12%;right:12%;bottom:6px;height:30px;background:radial-gradient(ellipse at center,rgba(31,35,64,.35),transparent 70%);z-index:-1}
.book3d{--w:300px;--t:26px;position:relative;width:var(--w);aspect-ratio:2/3;transform-style:preserve-3d;transform:rotateY(-26deg) rotateX(3deg);transition:transform .6s cubic-bezier(.2,.8,.2,1);border:0;padding:0;background:none;cursor:pointer;display:block}
.book3d:hover,.book3d:focus-visible{transform:rotateY(-12deg) rotateX(2deg) translateY(-4px)}
.book3d .bk-front{position:absolute;inset:0;transform:translateZ(calc(var(--t) / 2));border-radius:2px 6px 6px 2px;overflow:hidden;box-shadow:0 1px 0 rgba(255,255,255,.2) inset}
.book3d .bk-front img{width:100%;height:100%;object-fit:cover}
.book3d .bk-front::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.35) 0,rgba(255,255,255,.28) 1.6%,rgba(0,0,0,.18) 3.2%,transparent 7%),linear-gradient(115deg,rgba(255,255,255,.18) 0,transparent 35%);pointer-events:none}
.book3d .bk-back{position:absolute;inset:0;transform:rotateY(180deg) translateZ(calc(var(--t) / 2));background:#0B1E5B;border-radius:6px 2px 2px 6px;box-shadow:0 30px 50px -20px rgba(0,0,0,.6)}
.book3d .bk-pages{position:absolute;top:4px;bottom:4px;left:calc(100% - var(--t) / 2 - 3px);width:var(--t);transform:rotateY(90deg);background:repeating-linear-gradient(90deg,#FDFDFD 0 1px,#E2E4EA 1px 2px);box-shadow:inset 0 0 6px rgba(0,0,0,.18)}
.book3d .bk-top{position:absolute;left:3px;right:6px;top:calc(-1 * var(--t) / 2 + 3px);height:var(--t);transform:rotateX(90deg);background:repeating-linear-gradient(0deg,#FDFDFD 0 1px,#E2E4EA 1px 2px)}
.book3d .bk-spine{position:absolute;top:0;bottom:0;left:calc(-1 * var(--t) / 2);width:var(--t);transform:rotateY(-90deg);background:linear-gradient(90deg,#08174A,#14307F,#08174A)}
.book-hint{display:inline-flex;align-items:center;gap:8px;margin-top:6px;background:var(--navy);color:#fff;border:0;border-radius:999px;padding:10px 16px;font-weight:700;font-size:.88rem;cursor:pointer;min-height:44px;box-shadow:0 10px 20px -10px rgba(31,35,64,.6)}
.book-hint svg{width:18px;height:18px;stroke:var(--orange)}
.book-hint:hover{background:#2B3160}

/* ---------- Flip-book preview ---------- */
.flip-dialog{border:0;padding:0;background:transparent;width:100%;max-width:100vw;max-height:100vh;height:100%;margin:0;overflow:hidden}
.flip-dialog::backdrop{background:rgba(12,14,30,.9)}
.flip-shell{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:16px;gap:14px}
.flip-top{width:100%;max-width:880px;display:flex;justify-content:space-between;align-items:center;color:#fff;font-weight:700;gap:12px}
.flip-top small{display:block;font-weight:500;color:#B9BDD6;font-size:.82rem}
.flip-close{width:44px;height:44px;border-radius:50%;border:0;background:#fff;color:var(--ink);font-size:1.6rem;line-height:1;cursor:pointer;flex:none}
.flip-stage{perspective:2200px;display:flex;justify-content:center;width:100%;touch-action:pan-y}
.flip-book{--pw:min(40vw,calc((100vh - 200px) / 1.5),400px);position:relative;width:calc(var(--pw) * 2);height:calc(var(--pw) * 1.5);transition:transform .7s cubic-bezier(.3,.7,.2,1)}
.flip-book.is-closed{transform:translateX(-25%)}
.flip-book.single{width:var(--pw);--pw:min(86vw,calc((100vh - 210px) / 1.5))}
.flip-book.single.is-closed{transform:none}
.leaf{position:absolute;top:0;left:50%;width:50%;height:100%;transform-origin:left center;transform-style:preserve-3d;transition:transform .8s cubic-bezier(.45,.05,.25,1);cursor:pointer}
.flip-book.single .leaf{left:0;width:100%}
.leaf.flipped{transform:rotateY(-180deg)}
.leaf .face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:#fff;overflow:hidden;box-shadow:0 20px 40px -18px rgba(0,0,0,.6)}
.leaf .face img{width:100%;height:100%;object-fit:contain;background:#fff;display:block;pointer-events:none;user-select:none}
.leaf .face.is-cover img{object-fit:cover}
.leaf .face-front{border-radius:0 6px 6px 0}
.leaf .face-back{transform:rotateY(180deg);border-radius:6px 0 0 6px}
.leaf .face-front::after,.leaf .face-back::after{content:"";position:absolute;top:0;bottom:0;width:14%;pointer-events:none}
.leaf .face-front::after{left:0;background:linear-gradient(90deg,rgba(0,0,0,.16),transparent)}
.leaf .face-back::after{right:0;background:linear-gradient(270deg,rgba(0,0,0,.16),transparent)}
.leaf .face.is-cover::after{background:linear-gradient(90deg,rgba(0,0,0,.35) 0,rgba(255,255,255,.25) 2%,transparent 6%)}
.flip-end{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;height:100%;padding:8%;background:linear-gradient(180deg,#FFFFFF,#F2F3FB)}
.flip-end h3{font-size:clamp(1rem,2.4vw,1.4rem);margin-bottom:6px}
.flip-end p{font-size:clamp(.8rem,1.6vw,.95rem);color:var(--muted);margin-bottom:12px}
.flip-end .fe-price{font-size:clamp(1.4rem,3.4vw,2.2rem);font-weight:800;color:var(--ink);margin-bottom:12px;line-height:1.1}
.flip-end .btn{min-height:46px;padding:12px 18px;font-size:clamp(.78rem,1.6vw,.95rem)}
.flip-controls{display:flex;align-items:center;gap:16px;color:#fff;font-weight:600}
.flip-controls button{min-width:44px;min-height:44px;padding:10px 18px;border-radius:999px;border:1.5px solid rgba(255,255,255,.4);background:transparent;color:#fff;font-weight:700;cursor:pointer;font-size:.95rem}
.flip-controls button:hover:not(:disabled){background:rgba(255,255,255,.12)}
.flip-controls button:disabled{opacity:.35;cursor:default}
#flip-status{min-width:110px;text-align:center;font-size:.92rem}

/* ---------- Price with regular price ---------- */
.was{color:var(--muted);font-weight:600;font-size:.55em;margin-left:8px;text-decoration-thickness:2px;text-decoration-color:#C2410C}
.save-chip{display:inline-block;background:#FFEDD5;color:#9A3412;font-weight:800;font-size:.78rem;border-radius:999px;padding:4px 10px;margin-top:6px;letter-spacing:.02em}
.save-chip:empty{display:none}

/* ---------- About the author ---------- */
.author{display:grid;grid-template-columns:220px 1fr;gap:44px;align-items:center;max-width:920px;margin:0 auto}
.author-photo{width:220px;height:220px;border-radius:50%;overflow:hidden;border:6px solid #fff;box-shadow:0 0 0 2px var(--indigo-50),var(--shadow-lg)}
.author-photo img{width:100%;height:100%;object-fit:cover}
.author h2{margin-bottom:4px}
.author .role{color:var(--indigo);font-weight:700;margin-bottom:16px}
.author-note{font-size:.92rem;color:var(--muted);background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin:0}
@media (max-width:700px){.author{grid-template-columns:1fr;text-align:center;gap:24px}.author-photo{width:170px;height:170px;margin:0 auto}}
.cover-meta{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;margin-top:34px;font-size:.88rem;color:var(--muted);font-weight:600}
.cover-meta span{display:flex;align-items:center;gap:6px}
.cover-meta svg{width:16px;height:16px;stroke:var(--indigo)}

/* ===================== CARDS & GRIDS ===================== */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.card p{margin:0;color:var(--muted);font-size:.98rem}
.icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;background:var(--indigo-50)}
.icon svg{width:24px;height:24px;stroke:var(--indigo)}
.icon--orange{background:var(--orange-50)}
.icon--orange svg{stroke:#B26B00}

/* Problem */
.problem-card h3{display:flex;gap:10px;align-items:flex-start}

/* Solution */
.solution{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
.quote{font-size:1.35rem;line-height:1.45;color:var(--ink);font-weight:700;border-top:3px solid var(--orange);padding-top:20px;margin:0 0 8px;letter-spacing:-.01em}
.quote-src{font-size:.9rem;color:var(--muted)}
.checklist{list-style:none;padding:0;margin:0 0 1em}
.checklist li{position:relative;padding-left:34px;margin-bottom:12px}
.checklist li::before{content:"";position:absolute;left:0;top:4px;width:22px;height:22px;border-radius:50%;background:var(--indigo-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234F46E5' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/13px no-repeat}

/* Learn: parts */
.parts{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.part{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 26px 18px;box-shadow:var(--shadow)}
.part-num{display:inline-block;font-size:.75rem;font-weight:800;letter-spacing:.1em;color:#B26B00;background:var(--orange-50);padding:4px 10px;border-radius:999px;margin-bottom:10px}
.part ol{margin:8px 0 0;padding:0;list-style:none;counter-reset:none}
.part li{display:flex;gap:12px;padding:9px 0;border-top:1px solid var(--line);font-size:.97rem;color:var(--text)}
.part li b{color:var(--indigo);min-width:24px;font-variant-numeric:tabular-nums}
.part--resources{background:var(--navy);border-color:var(--navy)}
.part--resources h3{color:#fff}
.part--resources .part-num{background:rgba(245,166,35,.18);color:var(--orange)}
.part--resources li{border-color:rgba(255,255,255,.12);color:#D9DBEA}
.part--resources li b{color:var(--orange)}

/* Benefits */
.benefit h3{margin-top:0}

/* Inside the book */
.inside{display:grid;grid-template-columns:300px 1fr;gap:40px;align-items:start}
.inside-cover{position:sticky;top:96px}
.inside-cover img{border-radius:4px 10px 10px 4px;box-shadow:var(--shadow-lg)}
.inside-cover p{font-size:.88rem;color:var(--muted);text-align:center;margin-top:14px}
.previews{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.preview{margin:0}
.preview button{display:block;width:100%;padding:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;cursor:zoom-in;box-shadow:var(--shadow);transition:transform .15s ease,box-shadow .15s ease}
.preview button:hover{transform:translateY(-3px);box-shadow:0 14px 30px -12px rgba(31,35,64,.3)}
.preview img{aspect-ratio:400/566;object-fit:cover;width:100%}
.preview figcaption{font-size:.85rem;color:var(--muted);margin-top:8px;text-align:center;line-height:1.35}
.lightbox{border:0;padding:0;background:transparent;max-width:min(92vw,820px);max-height:92vh;width:100%}
.lightbox::backdrop{background:rgba(15,17,35,.85)}
.lightbox img{width:100%;height:auto;max-height:84vh;object-fit:contain;border-radius:8px;background:#fff}
.lightbox-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;color:#fff;margin-bottom:10px;font-weight:600}
.lightbox-close{width:44px;height:44px;border-radius:50%;border:0;background:#fff;color:var(--ink);font-size:1.5rem;line-height:1;cursor:pointer;flex:none}

/* Who */
.who-card h3{margin-bottom:6px}

/* What you get */
.get-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 28px;list-style:none;padding:0;margin:0}
.get-list li{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.get-list .num{flex:none;min-width:48px;height:48px;border-radius:12px;background:var(--indigo-50);color:var(--indigo);display:grid;place-items:center;font-weight:800;font-size:1.05rem}
.get-list strong{color:var(--ink);display:block;line-height:1.3}
.get-list span.desc{font-size:.93rem;color:var(--muted)}

/* Pricing */
.price-card{max-width:560px;margin:0 auto;background:#fff;border:2px solid var(--indigo);border-radius:24px;padding:36px;box-shadow:0 30px 60px -30px rgba(79,70,229,.45);text-align:center}
.price-card .mini-cover{width:110px;margin:0 auto 18px;border-radius:3px 7px 7px 3px;box-shadow:0 14px 28px -10px rgba(31,35,64,.5)}
.price-card .price{font-size:3rem;font-weight:800;color:var(--ink);line-height:1.1;margin:8px 0 4px;letter-spacing:-.02em}
.price-card .price-note{color:var(--muted);font-size:.95rem;margin-bottom:22px}
.price-card .checklist{text-align:left;max-width:400px;margin:0 auto 26px}
.price-card .btn{width:100%}
.pay-logos{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:16px}
.pay-logos span{font-size:.78rem;font-weight:700;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:4px 10px}

/* FAQ */
.faq{max-width:820px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:14px;background:#fff;margin-bottom:12px;overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:20px 60px 20px 22px;font-weight:700;color:var(--ink);position:relative;font-size:1.03rem;min-height:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:22px;top:50%;width:22px;height:22px;margin-top:-11px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234F46E5' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E") center/22px no-repeat;transition:transform .2s ease}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details[open] summary{color:var(--indigo)}
.faq .answer{padding:0 22px 20px;color:var(--text)}
.faq .answer p:last-child{margin:0}

/* Final CTA */
.final{background:var(--navy);color:#D9DBEA;border-radius:28px;padding:56px;display:grid;grid-template-columns:220px 1fr;gap:48px;align-items:center;position:relative;overflow:hidden}
.final::before{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(79,70,229,.45),transparent 70%)}
.final h2{color:#fff}
.final img{border-radius:3px 8px 8px 3px;box-shadow:0 30px 50px -20px rgba(0,0,0,.6);position:relative}
.final .price-inline{color:var(--orange);font-weight:800}
.final .btn-primary{background:var(--orange);color:var(--navy);box-shadow:0 10px 24px -8px rgba(245,166,35,.6)}
.final .btn-primary:hover{background:#FFB940}
.final-content{position:relative}

/* Footer */
#final{padding-bottom:64px}
.site-footer{padding:40px 0 36px;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted)}
.footer-grid{display:flex;flex-wrap:wrap;justify-content:space-between;gap:20px;align-items:flex-start}
.site-footer a{color:var(--muted)}
.fine{font-size:.8rem;margin-top:20px;max-width:760px}

/* Sticky mobile buy bar */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:60;background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 24px -12px rgba(0,0,0,.2);padding:10px 16px calc(10px + env(safe-area-inset-bottom));display:none;align-items:center;justify-content:space-between;gap:12px;transform:translateY(110%);transition:transform .25s ease}
.mobile-bar.show{transform:translateY(0)}
.mobile-bar .mb-price{font-weight:800;color:var(--ink);line-height:1.2;font-size:1.05rem}
.mobile-bar .mb-price small{display:block;font-weight:600;color:var(--muted);font-size:.75rem}
.mobile-bar .btn{min-height:48px;padding:12px 18px;font-size:.9rem;flex:1;max-width:260px}

/* Setup notice (only shows to YOU if the payment link is not set) */
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:14px 18px;border-radius:12px;font-size:.92rem;max-width:min(92vw,520px);z-index:80;box-shadow:0 12px 30px rgba(0,0,0,.3);display:none}
.toast.show{display:block}

/* ===================== RESPONSIVE ===================== */
@media (max-width:1000px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .previews{grid-template-columns:repeat(3,1fr)}
  .inside{grid-template-columns:1fr}
  .inside-cover{position:static;max-width:240px;margin:0 auto}
}
@media (max-width:900px){
  .hero-grid,.solution{grid-template-columns:1fr;gap:40px}
  .hero-cover{max-width:340px;order:-1;margin:0 auto}
  .book3d{--w:240px;--t:22px}
  .hero{padding:36px 0 64px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .parts,.get-list{grid-template-columns:1fr}
  .final{grid-template-columns:1fr;text-align:center;padding:44px 24px}
  .final img{max-width:170px;margin:0 auto}
  .mobile-bar{display:flex}
  body{padding-bottom:76px}
}
@media (max-width:600px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:64px 0}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .previews{grid-template-columns:repeat(2,1fr);gap:12px}
  .hero-buy{flex-direction:column;align-items:stretch}
  .hero-buy .btn{width:100%}
  .price-card{padding:28px 20px}
  .price-card .price{font-size:2.5rem}
  .card{padding:22px}
  .book3d{--w:190px;--t:18px}
  .book-stage{padding:6px 20px 26px}
  .cover-meta{display:none}
}

/* ===================== STORE ADDITIONS ===================== */
.nav-links a[aria-current="page"]{color:var(--indigo)}
.btn.is-disabled{background:#E6E8F0;color:#5B6177;box-shadow:none;cursor:not-allowed}
.now{font-weight:800;color:var(--ink)}
.price-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 0;font-size:1.6rem;line-height:1.2}
.price-row .save-chip{font-size:.78rem;margin:0 0 0 10px;align-self:center}
.price-row .was{font-size:.6em}

/* Featured book (top of store) */
.feature{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.feature .eyebrow-pill{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:800;letter-spacing:.08em;color:#9A3412;background:#FFEDD5;border-radius:999px;padding:6px 12px;margin-bottom:14px}
.feature h1{font-size:clamp(2rem,4.6vw,3.2rem)}
.feature .lead{font-size:1.12rem;color:var(--text);max-width:580px}
.feature-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:24px 0 12px}
.store-intro{max-width:760px;margin:0 auto 8px;text-align:center}
.store-intro h2{margin-bottom:10px}

/* Book grid */
.book-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,320px));justify-content:center;gap:24px}
.book-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}
.book-card:hover{transform:translateY(-4px);box-shadow:0 24px 40px -24px rgba(31,35,64,.45)}
.book-card .bc-cover{background:linear-gradient(180deg,var(--indigo-50),#fff);padding:26px 0 18px;display:flex;justify-content:center}
.book-card .bc-body{padding:4px 22px 22px;display:flex;flex-direction:column;flex:1}
.book-card h3{font-size:1.12rem;margin:8px 0 6px}
.book-card h3 a{color:var(--ink);text-decoration:none}
.book-card h3 a:hover{color:var(--indigo)}
.book-card .bc-meta{font-size:.82rem;color:var(--muted);font-weight:600}
.book-card .bc-short{font-size:.94rem;color:var(--muted);margin:0 0 14px;flex:1}
.book-card .price-row{font-size:1.35rem;margin-bottom:14px}
.book-card .bc-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.book-card .bc-actions .btn{min-height:46px;padding:10px 12px;font-size:.88rem}
.book3d.sm{--w:150px;--t:16px;transform:rotateY(-22deg) rotateX(2deg)}
.book3d.md{--w:240px;--t:22px}
.empty-note{text-align:center;color:var(--muted);padding:40px;border:1px dashed var(--line);border-radius:16px}

/* Book detail page */
.detail-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.detail-grid .hero-cover{position:sticky;top:96px}
.detail h1{font-size:clamp(1.9rem,4.2vw,3rem)}
.detail .subtitle{font-size:1.15rem;color:var(--text);margin-bottom:6px}
.detail .byline{color:var(--muted);font-weight:600;margin-bottom:20px}
.facts{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 22px;padding:0;list-style:none}
.facts li{font-size:.85rem;font-weight:700;color:var(--navy);background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px}
.buy-box{border:2px solid var(--indigo);border-radius:20px;padding:22px;margin:24px 0;box-shadow:0 20px 40px -28px rgba(79,70,229,.5)}
.buy-box .label{font-size:.8rem;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.08em}
.buy-box .price-row{font-size:2.2rem;margin:4px 0 14px}
.buy-box .btn{width:100%}
.desc p{color:var(--text)}

@media (max-width:900px){
  .feature,.detail-grid{grid-template-columns:1fr;gap:32px}
  .feature .hero-cover,.detail-grid .hero-cover{order:-1;position:static}
}
@media (max-width:600px){
  .book-grid{grid-template-columns:1fr}
  .book3d.md{--w:190px;--t:18px}
  .feature-actions .btn{width:100%}
}