:root {
  /* Primary colors */
  --clr-orange: hsl(26, 100%, 55%);
  --clr-pale-orange: hsl(25, 100%, 94%);

  /* Neutral colors */
  --clr-very-dark-blue: hsl(220, 13%, 13%);
  --clr-dark-grayish-blue: hsl(219, 9%, 45%);
  --clr-grayish-blue: hsl(220, 14%, 75%);
  --clr-light-grayish-blue: hsl(223, 64%, 98%);
  --clr-white: hsl(0, 0%, 100%);
  --clr-black-lightbox: hsla(0, 0%, 0%, 0.75);

  /* Typography */
  --ff-main: 'Kumbh Sans', sans-serif;
  --fw-bold: 700;
  --fw-regular: 400;
}

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

body {
  -webkit-font-smoothing: antialiased;
  font-family: var(--ff-main);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

html, body {
  height: 100vh;
  margin: 0;
  padding: 0;
}

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

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

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
  font-size: inherit;
}

p {
  text-wrap: pretty;
}

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
}

#root, #__next {
  isolation: isolate;
}

/* Remove number input spinner arrows */
.number-input input::-webkit-outer-spin-button,
.number-input input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.number-input input[type=number] {
  appearance: textfield;
}

/* Header & Navigation */
header {
  flex-shrink: 0;
  height: 70px;
  padding-top: 1rem;
}

nav {
  display: flex;
  justify-content: space-around;
  align-items: center;
}

.nav_left {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav_logo {
  width: 100%;
  height: auto;
}

.nav_left_links ul {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav_left_links li a {
  text-decoration: none;
  color: var(--clr-dark-grayish-blue);
  font-weight: var(--fw-regular);
}

.nav_right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  position: relative;
}

.nav_avatar {
  width: 40px;
  height: 40px;
}

.menu {
  display: none;
}

.nav_right img[src="images/icon-cart.svg"] {
  cursor: pointer;
}

/* Main Content */
main {
  flex: 1;
  overflow-y: auto;
  display: grid;
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
  padding-bottom: 1rem;
}

/* Left Side - Product Images */
.main_left {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 500px;
  margin: 0 auto;
  max-height: calc(100vh - 120px);
}

.product-slider {
  position: relative;
  width: 100%;
  border-radius: 15px;
  overflow: hidden;
  max-height: 70%;
}

.slider-container {
  position: relative;
  width: 100%;
}

.slide {
  display: none;
  width: 100%;
}

.slide.active {
  display: block;
}

.slide img {
  width: 100%;
  height: auto;
  border-radius: 15px;
  object-fit: contain;
  max-height: 100%;
}

.slider-prev-btn,
.slider-next-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--clr-white);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2;
}

.slider-prev-btn {
  left: 15px;
}

.slider-next-btn {
  right: 15px;
}

.arrow {
  font-weight: bold;
  color: var(--clr-very-dark-blue);
}

.thumbnails {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.thumbnail {
  width: 22%;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
}

.thumbnail.active {
  border-color: var(--clr-orange);
}

.thumbnail.active img {
  opacity: 0.6;
}

.thumbnail img {
  width: 100%;
  height: auto;
  transition: opacity 0.3s ease;
}

.thumbnail:hover img {
  opacity: 0.7;
}

/* Right Side - Product Info */
.main_right {
  display: grid;
  margin-inline: 1rem;
  gap: 1rem;
  max-width: 800px;
}

.main_right_header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.main_right h1 {
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: var(--clr-orange);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
}

.main_right h2 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  color: var(--clr-very-dark-blue);
  font-weight: var(--fw-bold);
  max-width: 510px;
  text-wrap: wrap;
}

.main_right p {
  font-size: clamp(0.875rem, 2vw, 1rem);
  color: var(--clr-dark-grayish-blue);
  font-weight: var(--fw-regular);
  line-height: 1.4;
  max-width: 440px;
}

/* Pricing Section */
.price {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.new_price {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.orginal_price {
  font-size: 2rem;
  color: var(--clr-very-dark-blue);
  font-weight: var(--fw-bold);
}

.discount {
  background-color: var(--clr-pale-orange);
  color: var(--clr-orange);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-weight: var(--fw-bold);
}

.old_price {
  font-weight: var(--fw-bold);
  text-decoration-line: line-through;
  color: var(--clr-dark-grayish-blue);
}

/* Cart Section */
.cart {
  display: grid;
  gap: 1rem;
}

.number-input {
  display: flex;
  align-items: center;
  justify-content: space-around;
  background-color: var(--clr-light-grayish-blue);
  padding-block: 0.2rem;
  border-radius: 0.5rem;
}

.count {
  color: var(--clr-very-dark-blue);
  font-size: 1.2rem;
  font-weight: var(--fw-bold);
}

.decrement, .increment {
  color: var(--clr-orange) !important;
  font-size: 40px !important;
  font-weight: var(--fw-bold);
  cursor: pointer;
}

.cart button {
  padding-block: 1rem;
  background-color: var(--clr-orange);
  border: none;
  border-radius: 0.5rem;
  color: var(--clr-white);
  font-weight: var(--fw-bold);
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: center;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.cart button:hover {
  opacity: 0.7;
}

.cart button::before {
  content: url(images/icon-cart.svg);
  width: 22px;
  height: 20px;
  filter: brightness(0) invert(1);
}

/* Cart Badge */
.cart-badge {
  position: absolute;
  top: -8px;
  left: 12px;
  background-color: var(--clr-orange);
  color: white;
  font-size: 0.7rem;
  font-weight: var(--fw-bold);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Cart Modal */
.cart-modal {
  position: absolute;
  top: 80px;
  right: 5%;
  width: 360px;
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  z-index: 100;
  display: none;
}

.cart-modal.show {
  display: block;
}

.cart-modal-content {
  padding: 1.5rem;
}

.cart-modal h3 {
  font-size: 1rem;
  font-weight: var(--fw-bold);
  color: var(--clr-very-dark-blue);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--clr-grayish-blue);
  margin-bottom: 1.5rem;
}

.cart-items {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-height: 300px;
  margin-bottom: 1.5rem;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.cart-item-image {
  width: 50px;
  height: 50px;
  border-radius: 5px;
  object-fit: cover;
}

.cart-item-details {
  flex: 1;
}

.cart-item-name {
  color: var(--clr-dark-grayish-blue);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.cart-item-price {
  color: var(--clr-dark-grayish-blue);
  font-size: 0.9rem;
}

.cart-item-total {
  color: var(--clr-very-dark-blue);
  font-weight: var(--fw-bold);
}

.cart-item-delete {
  cursor: pointer;
  width: 14px;
  height: 16px;
}

.cart-empty {
  text-align: center;
  padding: 3rem 0;
  color: var(--clr-dark-grayish-blue);
  font-weight: var(--fw-bold);
}

.checkout-btn {
  background-color: var(--clr-orange);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 1rem;
  width: 100%;
  font-weight: var(--fw-bold);
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.checkout-btn:hover {
  opacity: 0.7;
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 0;
  left: -250px;
  width: 250px;
  height: 100%;
  background-color: white;
  z-index: 200;
  padding: 2rem;
  transition: left 0.3s ease;
}

.mobile-menu.show {
  left: 0;
}

.mobile-menu-header {
  margin-bottom: 3rem;
}

.close-menu {
  cursor: pointer;
}

.mobile-menu-content ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.mobile-menu-content a {
  text-decoration: none;
  color: var(--clr-very-dark-blue);
  font-weight: var(--fw-bold);
  font-size: 1.1rem;
}

/* Overlay */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 150;
  display: none;
}

.overlay.show {
  display: block;
}

/* Notification */
.notification {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: var(--clr-orange);
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  font-weight: var(--fw-bold);
  z-index: 300;
  animation: fadeIn 0.3s;
}

.notification.fade-out {
  animation: fadeOut 0.3s;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(20px); }
}

/* Media Queries */
@media (min-width: 768px) {
  main {
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    margin: 1rem auto;
    padding: 0 2rem;
    gap: 2rem;
  }
  
  .main_left {
    margin: 0;
  }
  
  .cart {
    grid-template-columns: 0.6fr 1fr;
  }
  
  .price {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .cart button, .number-input {
    padding-block: 0.2rem;
  }
  
  .slider-prev-btn, .slider-next-btn {
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  
  .product-slider:hover .slider-prev-btn,
  .product-slider:hover .slider-next-btn {
    opacity: 1;
  }
}

@media (max-width: 767px) {
  .menu {
    display: block;
  }
  
  .nav_left_links {
    display: none;
  }
  
  .slider-prev-btn, .slider-next-btn {
    display: flex;
  }
  
  .thumbnails {
    display: none;
  }
  
  .product-slider {
    border-radius: 0;
  }
  
  .slide img {
    border-radius: 0;
  }
  
  .cart-modal {
    width: 90%;
    left: 5%;
    right: 5%;
  }
}

@media (max-height: 700px) {
  .price, .cart {
    margin-top: 0.5rem;
  }
  
  .thumbnails {
    gap: 0.5rem;
  }
}