:root {
  --color-primary: #1F2A37;     
  --color-secondary: #374151;    
  --color-accent: #C9A66B;       
  --color-bg: #F7F5F2;           
  --color-card: #FFFFFF;         
  --color-muted: #9CA3AF;

  --font-heading: "Playfair Display", "Georgia", "Times New Roman", serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --radius-card: 12px;
  --shadow-subtle: 0 12px 30px rgba(15, 23, 42, 0.08);
  --transition-base: 220ms ease;
}



html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-primary);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
}

/*  Layout Helpers  */
.container {
  width: min(1120px, 100% - 3rem);
  margin: 0 auto;
}

.section {
  padding: 4.5rem 0;
}

.section-heading {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 2.4vw, 2.4rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

.section-heading p {
  max-width: 640px;
  margin: 0 auto;
  color: var(--color-muted);
  font-size: 0.98rem;
}

/* Header & Navigation */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 242, 0.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(156, 163, 175, 0.25);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.nav-logo span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  align-items: center;
  font-size: 0.95rem;
}

.nav-links a {
  position: relative;
  padding-bottom: 0.25rem;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  width: 0;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.nav-links a.is-active::after {
  width: 100%;
}

.cart-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(31, 41, 55, 0.25);
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
}

.cart-icon svg {
  width: 18px;
  height: 18px;
}

.cart-icon:hover {
  background-color: #fff;
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

.cart-popup {
  position: absolute;
  top: 60px;
  right: 20px;
  width: 300px;
  max-height: 400px;
  background: white;
  border: 1px solid #ccc;
  border-radius: 10px;
  padding: 1rem;
  overflow-y: auto;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  z-index: 100;
}

.cart-popup .cart-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid #eee;
}

.cart-popup .cart-item button {
  background: #e53e3e;
  color: white;
  border: none;
  padding: 0.2rem 0.5rem;
  border-radius: 5px;
  cursor: pointer;
}

/* Hero Section (Home)*/

.hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: stretch;
  color: #f9fafb;
  background-color: #111827;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(17, 24, 39, 0.9), rgba(31, 41, 55, 0.7)),
    url("https://images.pexels.com/photos/46274/pexels-photo-46274.jpeg?auto=compress&cs=tinysrgb&w=1600") center/cover no-repeat;
  opacity: 0.9;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 3.5rem;
  align-items: center;
  width: min(1120px, 100% - 3rem);
  margin: 0 auto;
  padding: 4.5rem 0;
}

.hero-copy h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 3.4vw, 3.4rem);
  line-height: 1.15;
  margin: 0 0 1rem;
}

.hero-copy p {
  max-width: 460px;
  color: #e5e7eb;
  font-size: 0.98rem;
  margin-bottom: 2rem;
}

.hero-meta {
  display: flex;
  gap: 2rem;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: #d1d5db;
}

.hero-meta div span {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #9ca3af;
}

.hero-card {
  background-color: rgba(17, 24, 39, 0.82);
  border-radius: 16px;
  padding: 2.3rem 2rem;
  box-shadow: var(--shadow-subtle);
  border: 1px solid rgba(156, 163, 175, 0.25);
}

.hero-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin: 0 0 0.75rem;
}

.hero-card p {
  font-size: 0.9rem;
  color: #d1d5db;
  margin: 0 0 1.5rem;
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  font-size: 0.88rem;
  color: #e5e7eb;
}

.hero-card li + li {
  margin-top: 0.35rem;
}

/* Buttons  */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  background-color: var(--color-accent);
  color: #111827;
  cursor: pointer;
  transition: background-color var(--transition-base),
              color var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.btn:hover {
  background-color: #d3b27f;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.22);
}

.btn-outline {
  background-color: transparent;
  color: #e5e7eb;
  border-color: rgba(209, 213, 219, 0.7);
}

.btn-outline:hover {
  background-color: #f9fafb;
  color: #111827;
}

/* Categories Section (Home) */

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
}

.category-card {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  padding: 1.6rem 1.5rem;
  box-shadow: var(--shadow-subtle);
  border: 1px solid rgba(209, 213, 219, 0.6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.category-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-accent);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.15);
}

.category-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-muted);
  margin-bottom: 0.6rem;
}

.category-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin: 0 0 0.4rem;
}

.category-card p {
  font-size: 0.9rem;
  color: var(--color-secondary);
  margin: 0;
}




/*  Why Choose Us Section */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.75rem;
}

.feature-card {
  padding: 1.8rem 1.6rem;
  border-radius: var(--radius-card);
  background: linear-gradient(145deg, #fdfdfb, #f5f3ee);
  border: 1px solid rgba(209, 213, 219, 0.85);
  box-shadow: var(--shadow-subtle);
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-accent);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16);
}

.feature-icon {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid rgba(31, 41, 55, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  color: var(--color-primary);
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 1.02rem;
  margin: 0 0 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-secondary);
  margin: 0;
}

/* Products Page */

.books-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr); 
  gap: 2rem;
}


.book-card {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  padding: 1.4rem 1.4rem 1.6rem;
  box-shadow: var(--shadow-subtle);
  border: 1px solid rgba(209, 213, 219, 0.8);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.book-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-accent);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.18);
}

.book-cover {
  /* width: 400px; */
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 1rem;
  aspect-ratio: 3 / 4.3;
  background: linear-gradient(135deg, #e5e7eb, #f9fafb);
}

.book-meta {
  flex: 1;
}

.book-title {
  font-family: var(--font-heading);
  font-size: 1.02rem;
  margin: 0 0 0.25rem;
}

.book-author {
  font-size: 0.88rem;
  color: var(--color-muted);
  margin-bottom: 0.7rem;
}

.book-price {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-secondary);
  margin-bottom: 1.1rem;
}

.book-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background-color: #f3f4f6;
  color: var(--color-secondary);
}



/* About Page */

.about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
}

.about-image {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 22px 60px rgba(15, 23, 42, 0.2);
  border: 1px solid rgba(209, 213, 219, 0.9);
}

.about-copy h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3vw, 2.6rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

.about-copy p {
  color: var(--color-secondary);
  font-size: 0.98rem;
  margin: 0 0 1rem;
}

.mission-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.mission-card {
  padding: 1.6rem 1.5rem;
  border-radius: var(--radius-card);
  background-color: var(--color-card);
  border: 1px solid rgba(209, 213, 219, 0.9);
  box-shadow: var(--shadow-subtle);
}

.mission-card h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
}

.mission-card p {
  font-size: 0.9rem;
  margin: 0;
}

/* Contact Page */

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 2.5rem;
}

.contact-card,
.contact-info-card {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  border: 1px solid rgba(209, 213, 219, 0.9);
  box-shadow: var(--shadow-subtle);
  padding: 2rem 1.8rem;
}

.contact-card h2,
.contact-info-card h2 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin: 0 0 1.2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  color: var(--color-secondary);
}

.form-input,
.form-textarea {
  border-radius: 999px;
  border: 1px solid rgba(156, 163, 175, 0.7);
  padding: 0.6rem 0.9rem;
  font-size: 0.9rem;
  font-family: inherit;
  background-color: #f9fafb;
  transition: border-color var(--transition-base),
              background-color var(--transition-base),
              box-shadow var(--transition-base);
}

.form-textarea {
  border-radius: 18px;
  min-height: 140px;
  resize: vertical;
  padding: 0.7rem 0.9rem;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: #ffffff;
  box-shadow: 0 0 0 1px rgba(201, 166, 107, 0.55);
}

.contact-info-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.contact-info-list li + li {
  margin-top: 0.75rem;
}

.info-label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-muted);
}

/*  Footer*/

.site-footer {
  border-top: 1px solid rgba(156, 163, 175, 0.4);
  padding: 2.5rem 0 2rem;
  margin-top: 3rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--color-secondary);
}

.footer-links {
  display: flex;
  gap: 1.3rem;
}

.footer-links a {
  position: relative;
}

.footer-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.1rem;
  height: 1px;
  width: 0;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.footer-links a:hover::after {
  width: 100%;
}

/*   Responsive Breakpoints */

@media (max-width: 992px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 2.5rem;
  }

  .categories-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

   .books-grid {
    grid-template-columns: repeat(2, 1fr); 
  }

  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .products-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .filter-card {
    position: static;
  }

  .about-hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .navbar {
    flex-wrap: wrap;
    row-gap: 0.75rem;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-end;
    gap: 1.1rem;
    flex-wrap: wrap;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    padding: 3.5rem 0 3.2rem;
  }

  .hero-card {
    order: -1;
  }
 
  .books-grid {
    grid-template-columns: 1fr; 
  }
  .categories-grid,
  .features-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .mission-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .form-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(100% - 2rem, 480px);
  }

  .section {
    padding: 3.2rem 0;
  }

  .nav-links {
    justify-content: flex-start;
  }
 .books-grid {
    grid-template-columns: 1fr; 
  }
  .hero-copy h1 {
    font-size: 2rem;
  }

  .hero-meta {
    flex-direction: column;
    gap: 0.8rem;
  }
}