:root{
  --navy:#132242;
  --navy-deep:#0c1830;
  --burgundy:#8a1f2d;
  --gold:#a9803f;
  --cream:#f6f2ea;
  --paper:#ffffff;
  --ink:#1c1c1c;
  --ink-soft:#5b5f6b;
  --line:#dedad0;
  --radius:2px;
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--cream);
  color:var(--ink);
  font-family:'Inter',sans-serif;
  font-size:16px;
  line-height:1.55;
}
h1,h2,h3,h4{
  font-family:'Lora',serif;
  margin:0;
  color:var(--navy);
  font-weight:600;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}

/* ---------- utility bar ---------- */
.utility-bar{background:var(--navy-deep);color:#cfd6e6;font-size:13px;padding:7px 0;}
.utility-bar .wrap{max-width:1160px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px;}
.utility-bar span{margin-right:18px;}

/* ---------- header ---------- */
header.site{background:var(--navy);border-bottom:3px solid var(--gold);position:sticky;top:0;z-index:50;}
.header-wrap{max-width:1160px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:14px;}
.crest{width:44px;height:44px;flex:none;}
.brand-text h1{color:#fff;font-size:22px;letter-spacing:.3px;}
.brand-text p{margin:2px 0 0;color:#b9c2d6;font-size:12px;letter-spacing:.12em;text-transform:uppercase;}
nav.main-nav{display:flex;align-items:center;gap:28px;}
nav.main-nav a{color:#e7eaf2;font-size:14px;font-weight:500;padding:6px 0;border-bottom:2px solid transparent;}
nav.main-nav a:hover{border-bottom-color:var(--gold);}
.cart-btn{display:flex;align-items:center;gap:8px;background:var(--burgundy);color:#fff;border:none;border-radius:var(--radius);padding:10px 16px;font-size:14px;font-weight:600;}
.cart-btn:hover{background:#701824;}
.cart-count{background:#fff;color:var(--burgundy);border-radius:50%;min-width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;}

/* ---------- hero ---------- */
.hero{background:linear-gradient(180deg,var(--navy) 0%,var(--navy-deep) 100%);color:#fff;padding:56px 24px 64px;}
.hero-wrap{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}
.hero h2{color:#fff;font-size:34px;line-height:1.2;font-weight:600;}
.hero p.lede{color:#c3cadd;font-size:16px;max-width:46ch;margin-top:14px;}
.hero-panel{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius);padding:22px;}
.hero-panel p{color:#dde2ee;font-size:13px;margin:0 0 12px;text-transform:uppercase;letter-spacing:.1em;}
.search-row{display:flex;gap:8px;}
.search-row input[type=text]{flex:1;padding:12px 14px;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;border-radius:var(--radius);font-size:14px;}
.search-row input::placeholder{color:#a9b2c8;}
.search-row input[type=submit], .search-row button{background:var(--gold);color:var(--navy-deep);border:none;border-radius:var(--radius);padding:0 18px;font-weight:700;font-size:14px;cursor:pointer;}

/* ---------- filters ---------- */
.filters{max-width:1160px;margin:0 auto;padding:28px 24px 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;}
.filter-group{display:flex;gap:8px;flex-wrap:wrap;}
.chip{border:1px solid var(--line);background:var(--paper);color:var(--ink-soft);padding:8px 15px;border-radius:999px;font-size:13px;font-weight:500;cursor:pointer;}
.chip.active{background:var(--navy);border-color:var(--navy);color:#fff;}
.result-count{font-size:13px;color:var(--ink-soft);}

/* ---------- catalog ---------- */
.catalog{max-width:1160px;margin:0 auto;padding:24px 24px 80px;}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:22px;margin-top:18px;}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);display:flex;flex-direction:column;overflow:hidden;}
.card:hover{border-color:var(--gold);}
.cover-wrap{position:relative;aspect-ratio:3/4;background:#eee6d8;border-bottom:3px solid var(--navy);display:flex;align-items:center;justify-content:center;overflow:hidden;}
.cover-wrap img{width:100%;height:100%;object-fit:cover;}
.cover-fallback{width:100%;height:100%;display:flex;flex-direction:column;justify-content:space-between;padding:16px;background:linear-gradient(160deg,var(--navy),var(--navy-deep));}
.cover-fallback .fb-title{color:#fff;font-family:'Lora',serif;font-size:15px;line-height:1.3;font-weight:600;}
.cover-fallback .fb-isbn{color:#9fabc6;font-size:10px;letter-spacing:.06em;}
.card-body{padding:14px 14px 16px;display:flex;flex-direction:column;gap:8px;flex:1;}
.series-tag{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--burgundy);font-weight:700;}
.card-title{font-size:15px;line-height:1.35;font-weight:600;color:var(--ink);min-height:40px;}
.card-isbn{font-size:11px;color:var(--ink-soft);}
.type-tag{display:inline-block;align-self:flex-start;font-size:11px;color:var(--navy);background:#eef1f7;border:1px solid var(--line);padding:2px 8px;border-radius:999px;}
.card-footer{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:8px;border-top:1px solid var(--line);}
.price{font-family:'Lora',serif;font-weight:700;color:var(--navy);font-size:16px;}
.add-btn{background:var(--navy);color:#fff;border:none;border-radius:var(--radius);padding:9px 13px;font-size:13px;font-weight:600;cursor:pointer;}
.add-btn:hover{background:var(--burgundy);}

/* ---------- cart page ---------- */
.cart-table{width:100%;border-collapse:collapse;margin-top:18px;font-size:14px;}
.cart-table th{background:var(--navy);color:#fff;text-align:left;padding:10px 12px;font-size:12px;text-transform:uppercase;letter-spacing:.05em;}
.cart-table td{padding:12px;border-bottom:1px solid var(--line);vertical-align:middle;}
.cart-table .qty-btn{border:1px solid var(--line);background:var(--paper);border-radius:2px;padding:2px 9px;cursor:pointer;font-size:14px;}
.cart-table .remove-link{color:var(--burgundy);font-size:12px;text-decoration:underline;cursor:pointer;}
.subtotal-row{display:flex;justify-content:flex-end;gap:14px;align-items:baseline;font-size:16px;margin:20px 0;padding-top:16px;border-top:2px solid var(--navy);}
.subtotal-row strong{font-family:'Lora',serif;font-size:24px;color:var(--navy);}

/* ---------- checkout form ---------- */
.checkout-form{max-width:480px;margin-top:32px;padding:24px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);}
.checkout-form h3{font-size:18px;margin-bottom:16px;}
.checkout-form label{display:block;font-size:13px;font-weight:600;color:var(--navy);margin:14px 0 6px;}
.checkout-form input[type=text], .checkout-form input[type=email]{
  width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:var(--radius);font-size:14px;font-family:inherit;
}
.checkout-btn{margin-top:20px;width:100%;background:var(--burgundy);color:#fff;border:none;padding:13px;border-radius:var(--radius);font-weight:700;font-size:14px;cursor:pointer;}
.checkout-btn:hover{background:#6f1622;}
.field-error{color:var(--burgundy);font-size:12px;display:block;margin-top:4px;}
.error{color:var(--burgundy);font-size:14px;margin-top:14px;}
.empty-cart{color:var(--ink-soft);font-size:15px;margin-top:20px;}

/* ---------- footer ---------- */
footer{background:var(--navy-deep);color:#aab2c6;padding:44px 24px 26px;margin-top:40px;}
.footer-wrap{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
footer h4{color:#fff;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px;}
footer p, footer a{font-size:13px;line-height:1.9;color:#aab2c6;}
footer a:hover{color:#fff;}
.footer-bottom{max-width:1160px;margin:34px auto 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);font-size:12px;color:#7c85a0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}

@media(max-width:860px){
  .hero-wrap{grid-template-columns:1fr;}
  nav.main-nav{display:none;}
  .footer-wrap{grid-template-columns:1fr;}
}