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

ul,
ol {
  list-style: none;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  height: 100%;
}

body {
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
  line-height: 1.1;
}

p {
  text-wrap: pretty;
}

textarea:not([rows]) {
  min-height: 10em;
}

:focus-visible {
  outline: 2px solid dodgerblue;
  outline-offset: 2px;
}

:target {
  scroll-margin-block-start: 5ex;
}
/* End CSS Reset */

/* Start Global Styles */
:root {
  /* Color Variables */
  --grey-950: #1d2026;
  --grey-500: #69707d;
  --grey-300: #c3cad9;
  --grey-100: #e4e9f2;
  --grey-50: #f6f8fd;
  --orange-500: #ff7e1b;
  --orange-300: #ffab6a;

  /* Font Variables */
  --text-preset-1: normal 700 2.75rem/3rem "Kumbh Sans", sans-serif;
  --text-preset-2: normal 700 1.75rem/2rem "Kumbh Sans", sans-serif;
  --text-preset-3-bold: normal 700 1rem/1.625rem "Kumbh Sans", sans-serif;
  --text-preset-3-regular: normal 400 1rem/1.625rem "Kumbh Sans", sans-serif;
  --text-preset-4: normal 400 0.9375rem/1.625rem "Kumbh Sans", sans-serif;
  --text-preset-5: normal 700 0.8125rem/1rem "Kumbh Sans", sans-serif;
  --text-preset-6: normal 700 0.75rem/0.9375rem "Kumbh Sans", sans-serif;

  /* Spacing Variables */
  --spacing-100: 0.5rem;
  --spacing-200: 1rem;
  --spacing-300: 1.5rem;
  --spacing-400: 2rem;
  --spacing-500: 2.5rem;
  --spacing-600: 3rem;
  --spacing-700: 3.5rem;
  --spacing-900: 4.5rem;
  --spacing-1000: 5rem;
  --spacing-1200: 6rem;
  --spacing-1300: 6.5rem;
  --spacing-1600: 8rem;
}

body {
  position: relative;
  overflow-x: hidden;
  padding: 25px 40px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--spacing-400);
  border-bottom: 1px solid var(--grey-100);
}

.header-left-side {
  display: flex;
  align-items: center;
  gap: var(--spacing-700);
}

.menu-open-button {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.logo-img-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.desktop-nav ul {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-400);
}

.desktop-nav a {
  text-decoration: none;
  color: var(--grey-500);
  font: var(--text-preset-4);
}

.desktop-nav a:hover {
  color: var(--grey-950);
  text-decoration: underline;
  text-underline-offset: 48px;
  text-decoration-thickness: 4px;
  text-decoration-color: var(--orange-500);
}

.header-right-side {
  display: flex;
  align-items: center;
  gap: var(--spacing-600);
  position: relative;
}

.shopping-cart-btn {
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
}

.cart-item-count {
  position: absolute;
  top: -0.5rem;
  right: -0.5rem;
  background-color: var(--orange-500);
  color: white;
  border-radius: 0.40625rem;
  padding: 0.15rem 0.45rem;
  font-family: "Kumbh Sans", sans-serif;
  font-size: 0.625rem;
  font-weight: 700;
  width: 1.1875rem;
  height: 0.8125rem;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  line-height: 1;
  box-sizing: border-box;
  visibility: hidden;
}

.cart-item-count.visible {
  visibility: visible;
}

.user-avatar-container {
  width: 3.125rem;
  height: 3.125rem;
  flex-shrink: 0;
  border-radius: 50%;
  border: 2px solid transparent;
}

.user-avatar-container.avatar-active-border {
  border-color: var(--orange-500);
}

.cart-dropdown {
  position: absolute;
  top: calc(100% + var(--spacing-200));
  right: 0;
  z-index: 100;
  width: 22.5rem;
  display: none;
  flex-direction: column;
  padding: var(--spacing-300) 0;
  background-color: white;
  border-radius: 0.625rem;
  box-shadow: 0px 20px 50px -20px rgba(29, 32, 38, 0.1);
}

.cart-dropdown.visible {
  display: flex;
}

.cart-header {
  font: var(--text-preset-3-bold);
  color: var(--grey-950);
  padding: 0 0 var(--spacing-300) var(--spacing-200);
  border-bottom: 1px solid var(--grey-100);
}

.cart-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.empty-cart-message {
  font: var(--text-preset-3-bold);
  color: var(--grey-500);
  text-align: center;
  padding: var(--spacing-900) 0;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-200);
  margin-top: var(--spacing-300);
}

.cart-item-thumbnail {
  width: 3.125rem;
  height: 3.125rem;
  border-radius: 0.25rem;
}

.cart-item-details {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.cart-item-name {
  font: var(--text-preset-3-regular);
  color: var(--grey-500);
}

.cart-item-price {
  font: var(--text-preset-3-regular);
  color: var(--grey-500);
}

.cart-item-total {
  font: var(--text-preset-3-bold);
  color: var(--grey-950);
}

.delete-item-btn {
  background: none;
  border: none;
  cursor: pointer;
}

.checkout-btn {
  width: 100%;
  padding: var(--spacing-200) 0;
  border: none;
  border-radius: 0.625rem;
  background-color: var(--orange-500);
  font: var(--text-preset-3-bold);
  color: var(--grey-950);
  margin-top: var(--spacing-300);
}

.checkout-btn:hover {
  background-color: var(--orange-300);
}

.hidden {
  display: none;
}

.sidebar {
  background-color: white;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: 15.625rem;
  padding: var(--spacing-300);
  transform: translateX(-100%);
  transition: transform 0.3s ease-in-out;
  z-index: 1000;
  visibility: hidden;
}

.sidebar.open {
  transform: translateX(0);
  visibility: visible;
}

.menu-close-button {
  background: none;
  border: none;
  cursor: pointer;
  position: absolute;
}

.sidebar ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  margin-top: var(--spacing-700);
  gap: var(--spacing-300);
  flex-shrink: 0;
}

.sidebar a {
  text-decoration: none;
  color: var(--grey-950);
  font-family: "Kumbh Sans", sans-serif;
  font-size: 1.125rem;
  font-style: normal;
  font-weight: 700;
  line-height: 1.625rem;
}

.sidebar a:hover {
  color: var(--orange-500);
  transition: all 0.3s ease-in-out;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: black;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease-in-out, visibility 0s linear 0.3s;
  z-index: 999;
}

.overlay.visible {
  opacity: 0.75;
  visibility: visible;
  transition: opacity 0.3s ease-in-out;
}

main {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-1600);
  padding: var(--spacing-1200) 0;
}

.product-gallery {
  flex: 1;
  max-width: 28rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-400);
}

.main-image-container {
  position: relative;
  width: 100%;
  border-radius: 0.9375rem;
  overflow: hidden;
}

.main-product-image {
  width: 100%;
  height: auto;
  border-radius: 0.9375rem;
  cursor: pointer;
}

.thumbnail-gallery {
  display: flex;
  gap: var(--spacing-400);
  justify-content: center;
  width: 100%;
}

.thumbnail-container {
  width: 5.5rem;
  height: 5.5rem;
  border-radius: 0.625rem;
  cursor: pointer;
  transition: opacity 0.2s ease, border-color 0.2s ease;
  border: 2px solid transparent;
  overflow: hidden;
}

.thumbnail-container:hover {
  opacity: 0.4;
}

.thumbnail-image.active {
  opacity: 0.4;
}

.thumbnail-container:has(.thumbnail-image.active) {
  opacity: 1;
  border-color: var(--orange-500);
}

.mobile-only {
  display: none;
}

/* --- Lightbox Styling (Desktop Only) --- */

.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}

.lightbox.open {
  visibility: visible;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.lightbox-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.75);
}

.lightbox-content {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-200);
  max-width: 34.375rem;
  padding: var(--spacing-300);
}

.lightbox-close-btn {
  position: absolute;
  top: -var(--spacing-100);
  right: -10px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-100);
  transition: transform 0.2s ease;
}

.lightbox-close-btn:hover svg path {
  fill: var(--orange-500);
}

.lightbox-main-image-container {
  position: relative;
  width: 100%;
  border-radius: var(--spacing-200);
  overflow: hidden;
}

.lightbox-main-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--spacing-200);
}

.lightbox-prev-btn,
.lightbox-next-btn {
  position: absolute;
  top: 40%;
  transform: translateY(-40%);
  background-color: white;
  border-radius: 50%;
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  border: none;
  cursor: pointer;
  z-index: 5;
  transition: background-color 0.2s ease;
}

.lightbox-prev-btn {
  left: 2px;
}

.lightbox-next-btn {
  right: 2px;
}

.lightbox-prev-btn svg path,
.lightbox-next-btn svg path {
  transition: stroke 0.2s ease;
}

.lightbox-prev-btn:hover svg path,
.lightbox-next-btn:hover svg path {
  stroke: var(--orange-500);
}

.lightbox-thumbnail-gallery {
  margin-top: var(--spacing-300);
  gap: var(--spacing-200);
}

.lightbox-thumbnail-image {
  width: 3rem;
  height: 3rem;
}

.lightbox-thumbnail-image.active {
  opacity: 0.4;
}

.thumbnail-container:has(.lightbox-thumbnail-image.active) {
  opacity: 1;
  border-color: var(--orange-500);
}

.product-details {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 var(--spacing-300);
  max-width: 27.8125rem;
}

.company-name {
  font: var(--text-preset-5);
  color: var(--grey-500);
  margin-bottom: var(--spacing-300);
  letter-spacing: 0.125rem;
}

h2 {
  font: var(--text-preset-1);
  color: var(--grey-950);
  margin-bottom: var(--spacing-400);
}

.product-description {
  font: var(--text-preset-3-regular);
  color: var(--grey-500);
  margin-bottom: var(--spacing-400);
}

.price-details {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--spacing-100);
  margin-bottom: var(--spacing-400);
}

.product-price {
  display: flex;
  align-items: center;
  gap: var(--spacing-200);
}

.current-price {
  font: var(--text-preset-2);
  color: var(--grey-950);
}

.discount-tag {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--grey-950);
  border-radius: 0.375rem;
  color: white;
  font: var(--text-preset-3-bold);
  width: 3.1875rem;
  padding: 0.2rem 0.59rem;
}

.original-price {
  font: var(--text-preset-3-bold);
  color: var(--grey-500);
  text-decoration: line-through;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  white-space: nowrap;
  clip-path: inset(50%);
}

.add-to-cart {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-200);
}

.quantity-selection {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-100);
  background-color: var(--grey-50);
  border-radius: 0.625rem;
  padding: var(--spacing-200);
  width: 40%;
}

.minus-item-btn,
.add-item-btn {
  background: none;
  border: none;
  cursor: pointer;
}

.item-quantity {
  font: var(--text-preset-3-bold);
  color: var(--grey-950);
}

.add-to-cart-btn {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-200);
  padding: var(--spacing-200);
  border: none;
  border-radius: 0.625rem;
  background-color: var(--orange-500);
  box-shadow: 0px 20px 50px -20px rgba(255, 126, 27, 0.25);
  color: var(--grey-950);
  font: var(--text-preset-3-bold);
  width: 60%;
  cursor: pointer;
}

.add-to-cart-btn:hover {
  background-color: var(--orange-300);
}

/* Mobile Styles */
@media (max-width: 35rem) {
  body {
    padding: 0 0 40px 0;
    overflow-x: hidden;
    height: fit-content;
  }

  header {
    padding: var(--spacing-200) var(--spacing-200) var(--spacing-300)
      var(--spacing-200);
    border-bottom: none;
  }

  .header-left-side {
    gap: var(--spacing-200);
  }

  .menu-open-button {
    display: block;
  }

  .desktop-nav {
    display: none;
  }

  .header-right-side {
    gap: var(--spacing-300);
  }

  .user-avatar-container {
    width: 1.5rem;
    height: 1.5rem;
  }

  .cart-dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-400));
    width: clamp(10rem, 100vw - 2rem, 22.5rem);
  }

  main {
    padding: 0;
    flex-direction: column;
    gap: var(--spacing-300);
  }

  .product-gallery {
    max-width: 100%;
    gap: 0;
  }

  .main-image-container {
    border-radius: 0;
    overflow: visible;
  }

  .main-product-image {
    border-radius: 0;
  }

  .prev-image-btn,
  .next-image-btn {
    display: flex;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: white;
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;
    justify-content: center;
    align-items: center;
    border: none;
    cursor: pointer;
    z-index: 2;
  }

  .prev-image-btn {
    left: var(--spacing-200);
  }

  .next-image-btn {
    right: var(--spacing-200);
  }

  .prev-image-btn svg path,
  .next-image-btn svg path {
    stroke: var(--grey-950);
  }

  .thumbnail-gallery {
    display: none;
  }

  .lightbox {
    display: none;
  }

  h2 {
    font: var(--text-preset-2);
    margin-bottom: var(--spacing-200);
  }

  .product-description {
    font: var(--text-preset-4);
  }

  .price-details {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .add-to-cart {
    flex-direction: column;
    gap: var(--spacing-200);
  }

  .quantity-selection {
    width: 100%;
  }

  .add-to-cart-btn {
    width: 100%;
  }
}

/* Tablet Styles */
@media (min-width: 35rem) and (max-width: 48rem) {
  .header-left-side {
    gap: var(--spacing-200);
  }

  .menu-open-button {
    display: block;
  }

  .desktop-nav {
    display: none;
  }

  .sidebar {
    width: 18.8125rem;
    padding: var(--spacing-600) var(--spacing-1000);
  }

  main {
    padding: 0;
    flex-direction: column;
    gap: var(--spacing-300);
  }

  .product-gallery {
    margin-top: var(--spacing-600);
    max-width: 100%;
    gap: 0;
  }

  .main-image-container {
    border-radius: 0.9375rem;
    overflow: hidden;
    height: 18.125rem;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .main-product-image {
    border-radius: 0.9375rem;
    object-fit: cover;
  }

  .prev-image-btn,
  .next-image-btn {
    display: flex;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: white;
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;
    justify-content: center;
    align-items: center;
    border: none;
    cursor: pointer;
    z-index: 2;
  }

  .prev-image-btn {
    left: var(--spacing-200);
  }

  .next-image-btn {
    right: var(--spacing-200);
  }

  .prev-image-btn svg path,
  .next-image-btn svg path {
    stroke: var(--grey-950);
  }

  .thumbnail-gallery {
    display: none;
  }

  .lightbox {
    display: none;
  }

  .product-details {
    width: 100%;
    max-width: 100%;
  }
}

/* Desktop Styles */
@media (min-width: 48rem) {
  .sidebar {
    display: none;
  }

  .overlay {
    display: none;
  }
}