:root{
  --accent: #9bd65a;    
  --muted: #f2f2f2;
  --text: #222;
  --bg: #fff;
  --maxwidth: 1100px;
  --container-margin: 20px;
  --radius: 8px;
  --site-padding: 18px;
  --accent-dark: #7fb43f;
}

* { 
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,body { height: 100%; font-family: "Helvetica Neue", Arial, sans-serif; color: var(--text); background: #fafafa; }

.burgerMenu {
  display: none;
  width: 40px;
}

.iconHuman {
  display: none;
}

.container {
  max-width: var(--maxwidth);
  margin: 0 auto;
}

.siteHeader {
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
  box-shadow: 0 1px 0 rgba(0,0,0,0.03);
}

.topbar {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding: 10px var(--container-margin);
  max-width: var(--maxwidth);
  margin: 0 auto;
  gap:10px;
}

.firstButtons a {
  color: #333;
  text-decoration: none;
  margin-right: 18px;
  font-size: 14px;
}
.firstButtons a:hover { color: var(--accent-dark); }

.authentication {
  display:flex;
  gap:10px;
}
.btn { cursor:pointer; border: 1px solid transparent; padding:8px 12px; border-radius:6px; background:transparent; font-size:14px; }
.goIn { background:#fff; border:1px solid #ddd; }
.registration { background: var(--accent); color:#000; border:1px solid rgba(0,0,0,0.06); font-weight:700; }

.headerMain {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding: 18px var(--container-margin);
  max-width: var(--maxwidth);
  margin: 0 auto;
}

.brand { display:flex; align-items:center; gap:14px; }
.logoImage { 
  height: 44px; 
  width:auto; 
  display:block; 
  margin-inline: auto;
}

.catalog { display:flex; gap:8px; align-items:center; }
.catalog .catalogImage { background:#e6f3de; border-radius:6px; padding:8px; }
.catalog .catalogText { background:#f3fff1; border-radius:6px; padding:8px 10px; }

.searchWrap { flex: 1 1 400px; display:flex; justify-content:center; }
.searchForm { display:flex; gap:8px; width:100%; max-width:480px; }
.searchInput {
  flex:1;
  padding:10px 12px;
  border:1px solid #ddd;
  border-radius:30px;
  background:#fff;
}
.searchImage { padding:8px 12px; border-radius:20px; background:#111; color:#fff; border:none; }

.icons { display:flex; gap:14px; align-items:center; font-size:20px; }

.collections {
  position: relative;
  margin-top: 18px;
  display:block;
  max-width: var(--maxwidth);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--container-margin);
}
.collectionsImage {
  width:100%;
  height: 320px;
  object-fit: cover;
  border-radius: 18px;
  display:block;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
}
.collectionsTitle {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%,-50%);
  color: #fff;
  font-size:44px;
  text-align:center;
  text-shadow: 0 6px 20px rgba(0,0,0,0.6);
  line-height:1.05;
  font-weight:700;
  pointer-events:none;
}

.bestSeller { 
  padding: 48px 0; 
}

.sectionTitle { 
  font-size:34px; 
  margin-bottom: 28px; 
  font-family: Georgia, "Times New Roman", serif; 
  color:#111;
  text-align: center;
 }

.booksGrid {
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:36px;
  align-items:start;
  max-width: var(--maxwidth);
  margin: 0 auto;
  padding: 0 var(--container-margin);
}
.bookCard { text-align:center; }
.bookCover { width:180px; height:260px; object-fit:cover; border-radius:6px; box-shadow: 0 6px 18px rgba(0,0,0,0.08); margin: 0 auto 12px; display:block; }
.bookTitle { font-size:16px; margin-top:8px; font-weight:700; }
.booksAuthor { font-size:14px; color:#333; margin-top:6px; }

.catalogTable { padding: 36px 0 80px 0; }
.booksTable {
  width:100%;
  border-collapse: collapse;
  max-width: var(--maxwidth);
  margin: 0 auto;
}
.booksTable th, .booksTable td {
  padding: 12px 14px;
  border:1px solid #eee;
  text-align:left;
}
.booksTable thead th { background: var(--muted); font-weight:700; }
.inStock { color: #1a8a00; font-weight:600; }
.outOfStock { color: #c0392b; font-weight:600; }

.siteFooter {
  background:#fff;
  border-top:1px solid #eee;
  margin-top: 30px;
  padding: 28px 0;
}
.footerInner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap:40px;
  justify-content:space-between;
  align-items:flex-start;
  max-width: var(--maxwidth);
  margin: 0 auto;
  padding: 0 var(--container-margin);
}
.footerLeft { 
  display:flex; 
  gap:18px; 
  align-items:flex-start; 
  flex-direction: column;
}
.contacts h4 { 
  margin-bottom:8px; 
  font-size:16px; 
}

.contacts p { 
  margin-bottom:6px; 
  color:#333; 
}

.contacts {
  margin-inline: auto;
  text-align: center;
}

.footerRight {
    width: 320px;
    margin: 0 auto;
}

.registrationForm { display:flex; flex-direction:column; gap:10px; }
.input { padding:8px; border:1px solid #ddd; border-radius:6px; }

.copyright {
  margin-top: 20px;
  text-align: center;     
  color:#555;
}

.registrationFormText {
  text-align: center;
}

@media (max-width: 767px) {
  .firstButtons {
    display: none;
  }

  .burgerMenu {
    display: block;
  }

  .headerMain {
    flex-wrap: wrap;
  }

  .booksGrid {
    grid-template-columns: 1fr;
  }

  .footerInner {
    grid-template-columns: 1fr;
  }

  .catalogTable {
    padding-bottom: 0; 
    overflow-x: scroll;
    max-width: 100%;
    margin: 0 auto 80px;
  }
}

@media (max-width: 410px) {
  .catalogText {
    display: none;
  }

  .logo-box {
    width: 149px;
  }
}