/* Fountain & Key Press — public storefront design system.
   Light, warm, editorial (paper/navy/gold/serif). Distinct from the dark portal
   theme in style.css. Ported from FK-Platform-Handoff/fk-storefront-mockup.html
   (FK-201..204), adapted from the mockup's SVG-sprite covers to real <img> covers. */
:root{
  --paper:#f7f5f0;--paper-2:#efece4;--surface:#fff;
  --ink:#1b1b20;--ink-2:#3a3a42;--muted:#6b6b73;--muted-2:#8a8a92;
  --navy:#1e3a6b;--navy-2:#27497f;--navy-deep:#152a52;
  --gold:#b8862f;--teal:#1f7a6f;--coral:#f2694d;--coral-d:#d8442a;
  --hair:rgba(20,20,30,.10);--hair-2:rgba(20,20,30,.16);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,system-ui,sans-serif;
  --radius:18px;--radius-sm:12px;--shadow:0 14px 44px -18px rgba(20,22,40,.3);--shadow-lg:0 40px 90px -30px rgba(20,22,40,.5);
  --maxw:1180px;--ease:cubic-bezier(.22,.61,.36,1);
  --grad:linear-gradient(100deg,#ff7a4d,#f2694d 26%,#c99a3f 56%,#1f7a6f 88%);
}
*{box-sizing:border-box}
body.shop{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.55;-webkit-font-smoothing:antialiased}
.shop h1,.shop h2,.shop h3,.shop h4{font-family:var(--serif);font-weight:600;letter-spacing:-.015em;margin:0;line-height:1.1}
.shop a{color:inherit;text-decoration:none}
.shop button{font:inherit;cursor:pointer}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin:0 0 12px}
.muted{color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:980px;font-weight:600;font-size:.92rem;padding:11px 20px;transition:transform .2s var(--ease),box-shadow .2s,background .2s}
.btn.primary{background:var(--navy);color:#fff;box-shadow:0 12px 28px -12px rgba(30,58,107,.6)}
.btn.primary:hover{transform:translateY(-2px)}
.btn.warm{background:var(--grad);background-size:160% 160%;color:#fff}
.btn.warm:hover{transform:translateY(-2px)}
.btn.ghost{background:transparent;border-color:var(--hair-2);color:var(--ink)}
.btn.ghost:hover{background:rgba(20,20,30,.05)}
.btn.lg{padding:14px 26px;font-size:1rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* header */
.head{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:18px;padding:13px max(24px,calc((100vw - var(--maxw))/2 + 24px));background:rgba(247,245,240,.82);backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--hair)}
.brand{display:flex;align-items:center;gap:11px}
.seal{width:38px;height:38px;border-radius:50%;background:radial-gradient(circle at 50% 38%,#36507f,#152a52);display:grid;place-items:center;color:#e9cf9b;font-family:var(--serif);font-size:.7rem;border:2px solid #2c4a7a}
.brand b{font-family:var(--serif);font-weight:600;font-size:1.05rem;color:var(--navy)}
.brand span{display:block;font-size:.58rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2)}
.head nav{margin-left:14px;display:flex;gap:2px}
.head nav a{padding:8px 12px;border-radius:9px;font-size:.9rem;font-weight:500;color:var(--ink-2)}
.head nav a.on,.head nav a:hover{color:var(--navy);background:rgba(20,20,30,.05)}
.head .right{margin-left:auto;display:flex;align-items:center;gap:10px}
.icirc{width:40px;height:40px;border-radius:50%;border:1px solid var(--hair-2);background:#fff;display:grid;place-items:center;position:relative;color:var(--ink-2)}
.icirc svg{width:18px;height:18px}
.cart-count{position:absolute;top:-5px;right:-5px;background:var(--coral);color:#fff;font-size:.66rem;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:grid;place-items:center;padding:0 4px}

/* 3D book cover (real <img> fills it; gloss + spine edges overlay) */
.book3d{position:relative;border-radius:3px 7px 7px 3px;overflow:hidden;background:#11131a;box-shadow:0 18px 40px -16px rgba(10,10,20,.55);transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
.book3d::before{content:"";position:absolute;left:0;top:0;bottom:0;width:7px;background:linear-gradient(90deg,rgba(0,0,0,.5),rgba(255,255,255,.14) 70%,rgba(0,0,0,.15));z-index:3}
.book3d::after{content:"";position:absolute;right:0;top:0;bottom:0;width:3px;background:linear-gradient(90deg,rgba(255,255,255,.5),rgba(255,255,255,0));z-index:3}
.book3d .gloss{position:absolute;inset:0;background:linear-gradient(115deg,rgba(255,255,255,.22),transparent 32%);z-index:2}
.book3d img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.book-card:hover .book3d{transform:perspective(1000px) rotateY(-14deg) translateY(-6px);box-shadow:var(--shadow-lg)}

/* catalog */
.shopwrap{padding:40px 0 80px}
.shop-hero{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:linear-gradient(160deg,#fff,#f1ede3);border:1px solid var(--hair);border-radius:24px;padding:40px;margin-bottom:14px;position:relative;overflow:hidden}
.shop-hero .feat-cover{width:210px;justify-self:center}
.shop-hero .feat-cover .book3d{aspect-ratio:2/3}
.shop-hero h1{font-size:clamp(2rem,3.6vw,2.9rem);margin:6px 0 12px}
.shop-hero p{color:var(--ink-2);max-width:32rem;margin-bottom:18px}
.shop-hero .by{color:var(--muted);font-style:italic;margin-bottom:14px}
.filters{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:30px 0 22px}
.filters .lbl{font-size:.74rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-2);margin-right:4px}
.chip{border:1px solid var(--hair-2);background:#fff;border-radius:980px;padding:7px 15px;font-size:.85rem;font-weight:500;color:var(--ink-2);transition:all .15s}
.chip.on,.chip:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.rowtitle{display:flex;align-items:baseline;justify-content:space-between;margin:38px 0 18px}
.rowtitle h2{font-size:1.5rem}
.rowtitle a{font-size:.85rem;font-weight:600;color:var(--navy)}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.book-card{cursor:pointer}
.book-card .book3d{aspect-ratio:2/3;margin-bottom:12px}
.book-card .bt{font-family:var(--serif);font-weight:600;font-size:1.04rem;line-height:1.15}
.book-card .ba{color:var(--muted);font-size:.86rem;margin-top:2px}
.book-card .bp{margin-top:5px;font-weight:600;color:var(--navy);font-size:.92rem}
.tag{display:inline-block;font-size:.62rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--coral-d);background:rgba(242,105,77,.1);padding:3px 8px;border-radius:980px;margin-top:6px}
.empty-shelf{text-align:center;color:var(--muted);padding:60px 0}
@media(max-width:900px){.grid{grid-template-columns:repeat(3,1fr)}.shop-hero{grid-template-columns:1fr;text-align:center}.shop-hero .feat-cover{order:-1;width:170px}}
@media(max-width:560px){.grid{grid-template-columns:repeat(2,1fr);gap:18px}.head nav{display:none}}

/* product detail */
.pdp{padding:34px 0 80px}
.crumb{font-size:.82rem;color:var(--muted-2);margin-bottom:20px}
.crumb a{color:var(--navy)}
.pdp-top{display:grid;grid-template-columns:330px 1fr;gap:50px;align-items:start}
.pdp-cover .book3d{aspect-ratio:2/3;box-shadow:var(--shadow-lg)}
.pdp h1{font-size:clamp(1.9rem,3.4vw,2.7rem);margin-bottom:6px}
.pdp .author{color:var(--muted);font-size:1.05rem;font-style:italic;margin-bottom:16px}
.pdp .hook{font-size:1.12rem;color:var(--ink-2);line-height:1.6;margin-bottom:22px;max-width:34rem}
.formats{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}
.fmt{border:1.5px solid var(--hair-2);border-radius:12px;padding:11px 16px;min-width:120px;background:#fff;text-align:left;transition:all .15s}
.fmt.on{border-color:var(--navy);box-shadow:0 0 0 3px rgba(30,58,107,.12)}
.fmt .fn{font-weight:600;font-size:.92rem}
.fmt .fp{color:var(--navy);font-weight:700;font-size:1.05rem;margin-top:2px}
.fmt .fmeta{color:var(--muted-2);font-size:.74rem;margin-top:2px}
.buyrow{display:flex;gap:12px;flex-wrap:wrap;margin:8px 0 26px}
.meta-card{background:var(--surface);border:1px solid var(--hair);border-radius:var(--radius);padding:22px;display:grid;grid-template-columns:1fr 1fr;gap:14px 28px;margin-bottom:24px}
.meta-card .k{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--muted-2)}
.meta-card .v{font-weight:600;font-size:.95rem;margin-top:2px}
.section-h{font-family:var(--serif);font-size:1.4rem;margin:34px 0 12px}
.desc{color:var(--ink-2);line-height:1.75;max-width:46rem}
.authbox{display:flex;gap:18px;align-items:center;background:var(--paper-2);border-radius:var(--radius);padding:20px;margin-top:18px;max-width:46rem}
.authbox .ava{width:64px;height:64px;border-radius:50%;background:linear-gradient(150deg,var(--navy-2),var(--navy-deep));display:grid;place-items:center;color:#fff;font-family:var(--serif);font-size:1.4rem;flex:none}
@media(max-width:820px){.pdp-top{grid-template-columns:1fr;gap:26px}.pdp-cover{max-width:240px;margin:0 auto}}

/* cart drawer */
.scrim{position:fixed;inset:0;background:rgba(15,18,30,.45);opacity:0;pointer-events:none;transition:opacity .3s;z-index:90}
.scrim.on{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(420px,92vw);background:var(--paper);box-shadow:-20px 0 60px -20px rgba(0,0,0,.4);transform:translateX(100%);transition:transform .35s var(--ease);z-index:100;display:flex;flex-direction:column}
.drawer.on{transform:none}
.drawer-h{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--hair)}
.drawer-h h3{font-size:1.25rem}
.drawer-h button{border:0;background:transparent;font-size:1.3rem;color:var(--muted)}
.drawer-body{flex:1;overflow:auto;padding:14px 22px}
.citem{display:grid;grid-template-columns:48px 1fr auto;gap:13px;align-items:center;padding:14px 0;border-bottom:1px solid var(--hair)}
.citem .mini{aspect-ratio:2/3;border-radius:2px 5px 5px 2px;overflow:hidden;position:relative;background:#11131a}
.citem .mini img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.citem .ct{font-family:var(--serif);font-weight:600;font-size:.95rem;line-height:1.1}
.citem .cf{color:var(--muted-2);font-size:.78rem;margin-top:2px}
.citem .cp{font-weight:700;color:var(--navy);font-size:.92rem}
.citem .rm{display:block;border:0;background:none;color:var(--muted-2);font-size:.72rem;margin-top:3px;text-align:right;width:100%}
.drawer-f{padding:18px 22px;border-top:1px solid var(--hair);background:#fff}
.totrow{display:flex;justify-content:space-between;margin-bottom:4px;font-size:.9rem;color:var(--muted)}
.totrow.big{font-size:1.05rem;color:var(--ink);font-weight:700;margin:8px 0 14px}

/* checkout */
.co{padding:34px 0 80px;max-width:920px;margin:0 auto}
.co-grid{display:grid;grid-template-columns:1fr 380px;gap:34px;align-items:start}
.pay-card{background:#fff;border:1px solid var(--hair);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.pay-card h3{font-size:1.3rem;margin-bottom:4px}
.stripe-badge{font-size:.72rem;color:var(--muted-2);margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);margin-bottom:6px}
.inp{width:100%;border:1px solid var(--hair-2);border-radius:10px;background:#fcfbf8;padding:12px 13px;font:inherit;color:var(--ink)}
.summary{background:var(--surface);border:1px solid var(--hair);border-radius:var(--radius);padding:22px;position:sticky;top:90px}
.summary h4{font-size:1.05rem;margin-bottom:14px}
.notice{background:var(--paper-2);border:1px solid var(--hair);border-radius:12px;padding:16px;color:var(--ink-2);font-size:.9rem}
@media(max-width:820px){.co-grid{grid-template-columns:1fr}}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:12px 22px;border-radius:980px;font-size:.9rem;font-weight:600;opacity:0;pointer-events:none;transition:all .3s;z-index:200}
.toast.on{opacity:1;transform:translateX(-50%)}