/* =========================================
   1. Design Tokens & Reset
   ========================================= */
:root {
  /* Colors - Fur, Feathers & Fins Palette */
  --color-primary: #252F48;    /* Navy Blue */
  --color-secondary: #20BCB6;  /* Teal */
  --color-accent: #D16D79;     /* Rose Pink */
  --color-background: #EDEDEE; /* Light Gray */
  --color-surface: #FFFFFF;
  --color-text-main: #252F48;
  --color-text-muted: #6B7280;
  --color-border: #E5E7EB;

  /* Typography */
  --font-family-sans: 'Poppins', sans-serif;
  --font-family-display: 'Poppins', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Layout */
  --container-width: 1280px;
  --header-height: 5rem;
}

/* Modern Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family-sans);
  background-color: var(--color-background);
  color: var(--color-text-main);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

ul {
  list-style: none;
}

/* Utilities */
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* =========================================
   2. Layout Utilities
   ========================================= */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-sm);
  padding-right: var(--spacing-sm);
}

@media (min-width: 640px) {
  .container { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
}

/* =========================================
   3. Site Header Component (BEM)
   ========================================= */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.site-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
}

.site-header__logo-img {
  height: 3.5rem;
  width: auto;
}

/* Navigation */
.main-nav {
  display: none;
}

@media (min-width: 1024px) {
  .main-nav {
    display: flex;
    gap: 2rem;
  }
}

.main-nav__link {
  font-weight: 600;
  color: var(--color-primary);
  text-transform: capitalize; /* Poppins looks better capitalized than uppercase */
  font-size: 1rem;
}

.main-nav__link:hover {
  color: var(--color-secondary);
}

/* Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.cart-btn {
  position: relative;
  padding: 0.5rem;
  color: var(--color-primary);
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s;
}

.cart-btn:hover {
  color: var(--color-secondary);
}

.cart-btn__indicator {
  position: absolute;
  top: -2px;
  right: -2px;
  display: block;
  height: 0.75rem;
  width: 0.75rem;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 2px solid var(--color-surface);
}

.mobile-toggle {
  display: block;
  padding: 0.5rem;
  color: var(--color-primary);
  background: none;
  border: none;
  cursor: pointer;
}

@media (min-width: 1024px) { .mobile-toggle { display: none; } }

/* Mobile Menu */
.mobile-menu {
  display: none;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 1rem;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.mobile-menu--open { display: block !important; }

.mobile-menu__link {
  display: block;
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: var(--color-primary);
  border-radius: 0.5rem;
}

.mobile-menu__link:hover {
  background-color: #F3F4F6;
  color: var(--color-secondary);
}

/* =========================================
   4. Site Footer Component (BEM)
   ========================================= */
.site-footer {
  background-color: var(--color-primary);
  color: #D1D5DB; /* Gray 300 */
  margin-top: auto;
}

.site-footer__content {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) { .site-footer__grid { grid-template-columns: repeat(3, 1fr); } }

.site-footer__logo-box {
  background-color: var(--color-surface);
  display: inline-block;
  padding: 0.75rem;
  border-radius: 0.5rem;
  margin-bottom: 1.5rem;
}

.site-footer__logo-img { height: 2.5rem; width: auto; }

.site-footer__text {
  font-size: 0.875rem;
  line-height: 1.6;
  max-width: 20rem;
}

.site-footer__heading {
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-surface);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  font-size: 0.875rem;
}

.site-footer__links { display: flex; flex-direction: column; gap: 0.75rem; }
.site-footer__link { font-size: 0.875rem; transition: all 0.2s; }
.site-footer__link:hover { color: var(--color-secondary); transform: translateX(4px); display: inline-block; }

.site-footer__bottom {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid #374151;
  text-align: center;
  font-size: 0.75rem;
  color: #6B7280;
}

/* =========================================
   5. Component: Buttons
   ========================================= */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: all 0.3s ease;
  cursor: pointer;
  text-align: center;
  border: 1px solid transparent;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
.btn:hover { transform: translateY(-2px); }

.btn--secondary {
  background-color: var(--color-secondary);
  color: var(--color-surface);
}
.btn--secondary:hover {
  background-color: var(--color-surface);
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-surface);
}
.btn--primary:hover {
  opacity: 0.9;
}

/* =========================================
   6. Component: Hero Section
   ========================================= */
.hero {
  position: relative;
  height: 500px;
  background-color: var(--color-primary);
  overflow: hidden;
  display: flex;
  align-items: center;
  text-align: center;
}

@media (min-width: 1024px) { .hero { height: 600px; } }

.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
}

.hero__content {
  position: relative;
  z-index: 10;
  color: var(--color-surface);
  max-width: 48rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}
@media (min-width: 768px) { .hero__title { font-size: 3.75rem; } }

.hero__text {
  font-size: 1.125rem;
  color: #E5E7EB;
  margin-bottom: 2rem;
  max-width: 36rem;
}

/* =========================================
   7. Component: Features Grid
   ========================================= */
.section { padding: 4rem 0; }
.bg-white { background-color: var(--color-surface); }

.features-grid {
  display: grid;
  gap: 2rem;
  text-align: center;
}
@media (min-width: 768px) { .features-grid { grid-template-columns: repeat(3, 1fr); } }

.feature-item__icon {
  height: 4rem;
  width: 4rem;
  margin: 0 auto 1rem;
  background-color: var(--color-background);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
}
.feature-item__icon svg { width: 2rem; height: 2rem; }

.feature-item__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.feature-item__text { color: #6B7280; }

/* =========================================
   8. Component: Category Grid (Shop By Pet)
   ========================================= */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-primary);
  margin-bottom: 3rem;
}

.category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 640px) { .category-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .category-grid { grid-template-columns: repeat(5, 1fr); } }

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1.5rem;
  background-color: var(--color-surface);
  border-radius: 0.5rem;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  text-align: center;
}

.category-card:hover {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  border-color: var(--color-secondary);
  transform: translateY(-2px);
}

.category-card__img {
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1rem;
  transition: transform 0.3s;
}

.category-card:hover .category-card__img { transform: scale(1.05); }

.category-card__title { font-weight: 600; color: var(--color-primary); font-size: 1.125rem; }
.category-card__text { font-size: 0.875rem; color: #9CA3AF; margin-top: 0.25rem; }

/* =========================================
   9. Component: Deal Split (Promo)
   ========================================= */
.promo-box {
  background-color: var(--color-background);
  border-radius: 1rem;
  padding: 2rem;
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 1024px) { .promo-box { grid-template-columns: 1fr 1fr; padding: 3rem; } }

.promo-box__media { text-align: center; }
.promo-box__img {
  width: 100%;
  max-width: 28rem;
  border-radius: 0.5rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  border: 4px solid var(--color-surface);
  margin: 0 auto;
}

.promo-box__label {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

.promo-box__title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 1rem;
  margin-bottom: 1.5rem;
}

.promo-box__text { color: #4B5563; font-size: 1.125rem; margin-bottom: 2rem; }

.promo-box__price-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2rem;
}

.promo-box__price { font-size: 2.25rem; font-weight: 700; color: var(--color-secondary); }
.promo-box__price-old { font-size: 1.5rem; text-decoration: line-through; color: #9CA3AF; }
/* =========================================
   10. Component: Shop & Sidebar
   ========================================= */
.shop-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.shop-header__title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.shop-header__filter-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.shop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 640px) { .shop-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .shop-grid { grid-template-columns: repeat(3, 1fr); } }

.product-card {
  background-color: var(--color-surface);
  border-radius: 0.5rem;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1); border-color: var(--color-secondary); }

.product-card__img-wrapper { position: relative; padding-top: 100%; overflow: hidden; background-color: #F9FAFB; }
.product-card__img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.product-card:hover .product-card__img { transform: scale(1.05); }

.product-card__content { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.product-card__title { font-size: 1.125rem; font-weight: 600; color: var(--color-primary); margin-bottom: 0.5rem; }
.product-card__price { font-size: 1.25rem; font-weight: 700; color: var(--color-accent); margin-bottom: 1rem; }
.product-card__btn { margin-top: auto; width: 100%; padding: 0.5rem; font-size: 0.875rem; }

/* Sidebar */
.filter-overlay { position: fixed; inset: 0; background-color: rgba(37, 47, 72, 0.5); z-index: 40; }
.filter-sidebar {
  position: fixed; top: 0; left: 0; width: 18rem; height: 100%;
  background-color: var(--color-surface);
  z-index: 50; transform: translateX(-100%);
  transition: transform 0.3s ease;
  box-shadow: 2px 0 10px rgba(0,0,0,0.1);
}
.filter-sidebar.open { transform: translateX(0); }
.filter-sidebar__inner { display: flex; flex-direction: column; height: 100%; padding: 1.5rem; }
.filter-sidebar__header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }
.filter-sidebar__title { font-weight: 700; font-size: 1.25rem; color: var(--color-primary); }
.filter-sidebar__close { background: none; border: none; cursor: pointer; color: var(--color-text-muted); }

.filter-group { margin-bottom: 2rem; }
.filter-group__title { font-weight: 600; text-transform: uppercase; font-size: 0.875rem; color: var(--color-text-muted); margin-bottom: 1rem; }
.filter-option { display: flex; align-items: center; margin-bottom: 0.75rem; cursor: pointer; color: var(--color-primary); font-size: 0.95rem; }
.filter-option__input { width: 1.125rem; height: 1.125rem; margin-right: 0.75rem; accent-color: var(--color-secondary); }

.filter-sidebar__footer { margin-top: auto; padding-top: 1.5rem; border-top: 1px solid var(--color-border); }
.btn--full { width: 100%; }

/* =========================================
   11. Component: Product Detail
   ========================================= */
.breadcrumbs-strip { background-color: var(--color-surface); padding: 1rem 0; border-bottom: 1px solid var(--color-border); }
.breadcrumbs { font-size: 0.875rem; color: var(--color-text-muted); }
.breadcrumbs__link:hover { color: var(--color-secondary); }
.breadcrumbs__current { color: var(--color-primary); font-weight: 600; }

.product-layout { display: grid; gap: 3rem; align-items: start; }
@media (min-width: 1024px) { .product-layout { grid-template-columns: 1fr 1fr; } }

.product-gallery__main { border-radius: 0.5rem; overflow: hidden; margin-bottom: 1rem; border: 1px solid var(--color-border); }
.product-gallery__thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.product-gallery__thumb { border-radius: 0.25rem; overflow: hidden; cursor: pointer; border: 1px solid transparent; opacity: 0.7; }
.product-gallery__thumb:hover, .product-gallery__thumb--active { opacity: 1; border-color: var(--color-secondary); }

.product-info__badges { margin-bottom: 1rem; }
.badge { display: inline-block; padding: 0.25rem 0.5rem; border-radius: 0.25rem; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; }
.badge--accent { background-color: var(--color-accent); color: white; }
.product-info__sku { font-size: 0.875rem; color: var(--color-text-muted); margin-left: 0.5rem; }

.product-info__title { font-size: 2.25rem; font-weight: 700; color: var(--color-primary); margin-bottom: 0.5rem; line-height: 1.2; }
.product-info__price-box { display: flex; align-items: baseline; gap: 0.5rem; margin-bottom: 1.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--color-border); }
.product-info__price { font-size: 2rem; font-weight: 700; color: var(--color-secondary); }

.add-to-cart-box { background-color: #F8FAFC; padding: 1.5rem; border-radius: 0.5rem; border: 1px solid var(--color-border); }
.add-to-cart-box__row { display: flex; gap: 1rem; margin-bottom: 1rem; }
.quantity-selector { display: flex; background: white; border: 1px solid var(--color-border); border-radius: 0.25rem; }
.quantity-selector__btn { padding: 0 1rem; background: none; border: none; cursor: pointer; color: var(--color-text-muted); font-size: 1.25rem; }
.quantity-selector__input { width: 3rem; text-align: center; border: none; font-weight: 600; color: var(--color-primary); -moz-appearance: textfield; }
.quantity-selector__input::-webkit-outer-spin-button, .quantity-selector__input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* Tabs */
.tabs-container { margin-top: 4rem; }
.tabs-nav { display: flex; gap: 2rem; border-bottom: 1px solid var(--color-border); margin-bottom: 2rem; }
.tabs-nav__btn { padding-bottom: 1rem; font-weight: 600; color: var(--color-text-muted); background: none; border: none; cursor: pointer; border-bottom: 3px solid transparent; }
.tabs-nav__btn.active { color: var(--color-primary); border-bottom-color: var(--color-secondary); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* =========================================
   12. Component: Contact, Cart, 404
   ========================================= */
.contact-layout { display: grid; gap: 3rem; }
@media (min-width: 1024px) { .contact-layout { grid-template-columns: 1fr 1fr; } }
.contact-card, .contact-info__box { background-color: var(--color-surface); padding: 2rem; border-radius: 0.5rem; border: 1px solid var(--color-border); }
.contact-card__title { font-size: 1.5rem; font-weight: 700; color: var(--color-primary); margin-bottom: 1.5rem; }

.form-input { width: 100%; padding: 0.75rem; border: 1px solid var(--color-border); border-radius: 0.25rem; background-color: #F9FAFB; }
.form-input:focus { outline: 1px solid var(--color-secondary); border-color: var(--color-secondary); background: white; }
.form-label { display: block; font-size: 0.875rem; font-weight: 600; color: var(--color-primary); margin-bottom: 0.5rem; }

.cart-layout { display: grid; gap: 2rem; }
@media (min-width: 1024px) { .cart-layout { grid-template-columns: 2fr 1fr; } }
.cart-items, .order-summary { background: white; border-radius: 0.5rem; border: 1px solid var(--color-border); padding: 1.5rem; }
.empty-cart { text-align: center; padding: 4rem 1rem; background: white; border-radius: 0.5rem; border: 1px dashed var(--color-border); }

.error-page { background-color: var(--color-primary); color: white; min-height: 60vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 2rem; }
.error-page__code { font-size: 6rem; font-weight: 700; color: var(--color-secondary); line-height: 1; }
.error-page__title { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
.error-page__text { color: #E5E7EB; margin-bottom: 2rem; font-size: 1.125rem; }

.policy-content { max-width: 48rem; margin: 0 auto; background: white; padding: 3rem; border-radius: 0.5rem; border: 1px solid var(--color-border); }
.policy-heading { font-size: 1.25rem; font-weight: 700; color: var(--color-primary); margin-bottom: 1rem; margin-top: 2rem; }
.policy-content p { color: #4B5563; margin-bottom: 1rem; }
.policy-content ul { list-style: disc; padding-left: 1.5rem; margin-bottom: 1rem; color: #4B5563; }