/* ===================================
   SHOP - IMMERSIVE STOREFRONT
   =================================== */
:root {
  --purple: #481F71;
  --teal: #6EC6D2;
  --petrol: #3A6B73;
  --gold: #D1B280;
  --green: #A3C9A8;
  --black: #0F172A;
  --gray-700: #334155;
  --gray-500: #6B7280;
  --white: #FFFFFF;
  --off: #F8FAFB;
  --grad-primary: linear-gradient(135deg, var(--purple), var(--teal));
  --grad-mystic: radial-gradient(60% 60% at 20% 20%, rgba(72,31,113,0.20), transparent 60%),
                 radial-gradient(60% 60% at 80% 70%, rgba(110,198,210,0.15), transparent 60%),
                 radial-gradient(70% 70% at 50% 50%, rgba(209,178,128,0.12), transparent 70%);
}

* { box-sizing: border-box; }
body { margin:0; font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif; color: var(--black); background: var(--off); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* NAV */
.shop-nav{ position: sticky; top:0; z-index: 50; background: rgba(255,255,255,.9); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(72,31,113,.08);} 
.shop-nav .nav-inner{ max-width:1200px; margin:0 auto; padding:14px 24px; display:flex; align-items:center; justify-content:space-between; }
.brand{ font-family: "Playfair Display", serif; font-weight:700; color:var(--purple); text-decoration:none; font-size:1.25rem; }
.nav-links{ display:flex; gap:18px; align-items:center; }
.nav-links a{ color:var(--gray-700); text-decoration:none; font-weight:600; padding:8px 12px; border-radius:8px; transition:.25s; }
.nav-links a:hover{ color:var(--purple); background: rgba(72,31,113,.06);} 
.cart-btn{ position:relative; }
.cart-count{ position:absolute; top:-8px; right:-10px; background:var(--grad-primary); color:#fff; font-size:.7rem; border-radius:999px; padding:2px 6px; }

/* HERO */
.shop-hero{ position:relative; min-height:70vh; display:grid; place-items:center; overflow:hidden; }
.shop-hero .hero-bg{ position:absolute; inset:0; background: var(--grad-mystic); }
.orb{ position:absolute; width:320px; height:320px; border-radius:50%; filter: blur(50px); opacity:.35; }
.orb-1{ background: radial-gradient(circle, rgba(72,31,113,.55), transparent 70%); top:-80px; left:-60px; }
.orb-2{ background: radial-gradient(circle, rgba(110,198,210,.6), transparent 70%); bottom:-100px; right:-80px; }
.orb-3{ background: radial-gradient(circle, rgba(209,178,128,.45), transparent 70%); top:20%; right:25%; }
.stars{ position:absolute; inset:0; background-image: radial-gradient(rgba(255,255,255,.35) 1px, transparent 1px); background-size: 3px 3px; mask-image: linear-gradient(180deg, rgba(0,0,0,.6), rgba(0,0,0,0.1)); }
.hero-content{ position:relative; text-align:center; padding: 80px 24px 60px; }
.badge{ display:inline-block; background: rgba(72,31,113,.1); color:var(--purple); padding:8px 14px; border-radius:999px; font-weight:700; letter-spacing:.5px; margin-bottom:14px; }
.title{ font-family:"Playfair Display",serif; font-size: clamp(34px, 5vw, 64px); line-height:1.1; margin:0 0 12px; }
.title span{ background: var(--grad-primary); -webkit-background-clip:text; background-clip:text; color:transparent; }
.subtitle{ color:var(--gray-700); max-width:760px; margin: 0 auto 20px; font-size:1.05rem; }
.cta-primary{ display:inline-block; padding:12px 18px; background:var(--grad-primary); color:#fff; border-radius:12px; text-decoration:none; font-weight:700; box-shadow:0 10px 30px rgba(72,31,113,.25); transition:.25s; }
.cta-primary:hover{ transform: translateY(-2px); box-shadow:0 14px 36px rgba(72,31,113,.35); }

/* HIGHLIGHT */
.highlight-section{ padding:72px 0; background:#fff; }
.highlight-grid{ display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:center; }
.book-card{ position:relative; width:100%; max-width: 360px; margin:0 auto; }
.book-cover{ position:relative; border-radius:16px; overflow:hidden; border:1px solid rgba(72,31,113,.12); }
.book-cover img{ width:100%; display:block; }
.book-glow{ position:absolute; inset:-20%; background: radial-gradient(circle, rgba(72,31,113,.25), transparent 70%); filter: blur(30px); z-index:-1; }
.format-badges{ position:absolute; top:12px; left:12px; display:flex; gap:8px; }
.format-badges .badge{ background:#fff; border:1px solid rgba(72,31,113,.2); color:var(--purple); padding:6px 10px; border-radius:999px; }
.kicker{ color:var(--teal); font-weight:700; margin-bottom:8px; letter-spacing:.6px; text-transform:uppercase; }
.book-title{ font-family:"Playfair Display",serif; font-size:2rem; margin:6px 0 10px; }
.book-desc{ color:var(--gray-700); line-height:1.7; margin-bottom:16px; }
.book-features{ margin:0 0 18px 0; padding-left:18px; color:var(--gray-700); }
.book-features li{ margin:6px 0; }
.book-cta{ display:flex; gap:12px; align-items:center; }

/* BUTTONS */
.btn{ padding:10px 16px; border-radius:12px; border:none; cursor:pointer; font-weight:700; transition:.25s; }
.btn.primary{ background:var(--grad-primary); color:#fff; box-shadow:0 10px 28px rgba(72,31,113,.25); }
.btn.primary:hover{ transform: translateY(-2px); box-shadow:0 14px 36px rgba(72,31,113,.35); }
.btn.ghost{ background:transparent; border:2px solid var(--purple); color:var(--purple); }
.btn.ghost:hover{ background:var(--purple); color:#fff; }
.btn.small{ padding:8px 12px; border-radius:10px; }
.btn.outline{ background:#fff; border:2px solid rgba(72,31,113,.2); color:var(--purple); }
.btn.outline:hover{ border-color: var(--purple); box-shadow:0 10px 28px rgba(72,31,113,.18); }

/* CATALOG */
.catalog-section{ padding:72px 0; }
.section-head{ display:flex; align-items:center; justify-content:space-between; gap:16px; margin-bottom:24px; flex-wrap:wrap; }
.section-title{ font-family:"Playfair Display",serif; font-size:1.8rem; }
.filters{ background: rgba(72,31,113,.06); padding:6px; border-radius:12px; display:flex; gap:6px; }
.filter{ background:transparent; border:none; padding:8px 14px; border-radius:10px; font-weight:700; color:var(--gray-700); cursor:pointer; }
.filter.active{ background:#fff; color:var(--purple); box-shadow:0 4px 12px rgba(72,31,113,.12); }
.product-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap:18px; }
.product-card{ background:#fff; border:1px solid rgba(72,31,113,.12); border-radius:16px; overflow:hidden; transition:.25s; cursor:pointer; display:flex; flex-direction:column; }
.product-card:hover{ transform: translateY(-6px); box-shadow:0 16px 40px rgba(72,31,113,.12); }
.product-media{ position:relative; height:180px; overflow:hidden; }
.product-media img{ width:100%; height:100%; object-fit:cover; transition: transform .6s ease; }
.product-card:hover .product-media img{ transform: scale(1.07); }
.chip{ position:absolute; top:10px; left:10px; background:#fff; border:1px solid rgba(72,31,113,.2); color:var(--purple); padding:4px 8px; font-size:.75rem; border-radius:999px; font-weight:700; }
.product-body{ padding:14px; display:flex; flex-direction:column; gap:8px; }
.product-title{ font-weight:800; }
.product-desc{ color:var(--gray-700); font-size:.95rem; }
.product-actions{ margin-top:auto; display:flex; align-items:center; justify-content:space-between; }
.price{ font-weight:800; color:var(--purple); }

.catalog-cta{ display:flex; justify-content:center; margin-top:28px; }

/* MODAL */
.modal{ position:fixed; inset:0; background: rgba(10,10,21,.55); display:none; align-items:center; justify-content:center; z-index:100; padding:16px; }
.modal[aria-hidden="false"]{ display:flex; }
.modal-dialog{ width:100%; max-width:480px; background:#fff; border-radius:18px; padding:18px; box-shadow:0 28px 90px rgba(72,31,113,.3); position:relative; }
.modal-close{ position:absolute; right:10px; top:8px; background:transparent; border:none; font-size:1.8rem; line-height:1; cursor:pointer; }
.modal-title{ font-family:"Playfair Display",serif; margin:6px 0 6px; }
.modal-text{ color:var(--gray-700); }
.modal-form{ display:grid; gap:10px; margin-top:10px; }
.modal-form input{ padding:10px 12px; border-radius:10px; border:1px solid rgba(72,31,113,.2); font-size:1rem; }
.modal-feedback{ margin-top:8px; font-size:.9rem; }

/* FOOTER */
.shop-footer{ background: #0B1020; color:#fff; padding:24px 0; margin-top:40px; }
.shop-footer .footer-inner{ max-width:1200px; margin:0 auto; padding:0 24px; text-align:center; color: rgba(255,255,255,.65);} 

/* RESPONSIVE */
@media (max-width: 1100px){ .product-grid{ grid-template-columns: repeat(3, 1fr);} }
@media (max-width: 820px){ .highlight-grid{ grid-template-columns:1fr; } .book-visual{ order:2;} .book-info{ order:1;} .product-grid{ grid-template-columns: repeat(2, 1fr);} }
@media (max-width: 560px){ .nav-links{ display:none;} .product-grid{ grid-template-columns:1fr;} .title{ font-size: clamp(28px, 8vw, 42px);} }