*,
::after,
::before {
  box-sizing: border-box;
}

html {
  font-size: 100%; /* 16px */
}

:root {
  /* colors */
  --primary-100: #e3f2fd;
  --primary-200: #bbdefb;
  --primary-300: #90caf9;
  --primary-400: #64b5f6;
  --primary-500: #42a5f5;
  --primary-600: #1e88e5;
  --primary-700: #1976d2;
  --primary-800: #1565c0;
  --primary-900: #0d47a1;

  /* grey */
  --grey-50: #fafafa;
  --grey-100: #f5f5f5;
  --grey-200: #eeeeee;
  --grey-300: #e0e0e0;
  --grey-400: #bdbdbd;
  --grey-500: #9e9e9e;
  --grey-600: #757575;
  --grey-700: #616161;
  --grey-800: #424242;
  --grey-900: #212121;

  /* rest of the colors */
  --black: #000;
  --white: #fff;
  --red-light: #ef9a9a;
  --red-dark: #b71c1c;
  --green-light: #a5d6a7;
  --green-dark: #2e7d32;

  /* fonts */
  --small-text: 0.875rem;
  --extra-small-text: 0.7rem;
  /* rest of the vars */
  --backgroundColor: var(--grey-50);
  --textColor: var(--grey-900);
  --borderRadius: 0.5rem;
  --letterSpacing: 1px;
  --transition: 0.3s ease-in-out all;
  --max-width: 1200px;
  --fixed-width: 650px;

  /* box shadow */
  --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-2: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-3: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-4: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
}

body {
  background: var(--backgroundColor);
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-weight: 400;
  line-height: 1.75;
  color: var(--textColor);
  padding: 0 1rem;
}

p {
  margin-bottom: 1.5rem;
  max-width: 40em;
}

h1,
h2,
h3,
h4,
h5 {
  margin: 0;
  margin-bottom: 1.38rem;
  font-weight: 400;
  line-height: 1.3;
  text-transform: capitalize;
  letter-spacing: var(--letterSpacing);
}

h1 {
  margin-top: 0;
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

small,
.text-small {
  font-size: var(--small-text);
}

a {
  text-decoration: none;
  color: var(--primary-500);
}

ul {
  list-style-type: none;
  padding: 0;
}

.img {
  width: 100%;
  display: block;
  object-fit: cover;
}

/* buttons */
.btn {
  cursor: pointer;
  color: var(--white);
  background: var(--primary-600);
  border: transparent;
  border-radius: var(--borderRadius);
  letter-spacing: var(--letterSpacing);
  padding: 0.5rem 1rem;
  box-shadow: var(--shadow-1);
  transition: var(--transition);
  text-transform: capitalize;
  display: inline-block;
}

.btn:hover {
  background: var(--primary-800);
  box-shadow: var(--shadow-3);
}

@keyframes spinner {
  to {
    transform: rotate(360deg);
  }
}

.loading {
  width: 6rem;
  height: 6rem;
  border: 5px solid var(--grey-400);
  border-radius: 50%;
  border-top-color: var(--primary-500);
  animation: spinner 0.6s linear infinite;
}

.loading {
  margin: 0 auto;
  margin-top: 4rem;
}

/* title */
.title {
  text-align: center;
  margin-bottom: 3rem;
}

.title-underline {
  background: var(--primary-500);
  width: 7rem;
  height: 0.25rem;
  margin: 0 auto;
  margin-top: -1rem;
}

/*
=============== 
Products 
===============
*/
.products {
  padding: 5rem 0;
}

.products-center {
  width: 90vw;
  max-width: 1200px;
  margin: 0 auto;
}

.products-container {
  display: grid;
  gap: 2rem;
}

.single-product-img {
  border-radius: var(--borderRadius);
  height: 15rem;
}

.single-product footer {
  padding: 0.75rem 0;
  text-align: center;
}

.single-product .name {
  margin-bottom: 0.25rem;
  text-transform: capitalize;
  letter-spacing: var(--letterSpacing);
  color: var(--grey-600);
}

.single-product .price {
  margin-bottom: 0;
  color: var(--grey-800);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: var(--letterSpacing);
}

@media screen and (min-width: 768px) {
  .products-container {
    grid-template-columns: repeat(2, 1fr);
  }

  .single-product-img {
    height: 12rem;
  }

  .single-product .name {
    font-size: 0.85rem;
  }

  .single-product .price {
    font-size: 0.85rem;
  }

  .single-product {
    margin-bottom: 0;
  }
}

@media screen and (min-width: 1000px) {
  .products-container {
    grid-template-columns: repeat(3, 1fr);
  }
}

.error {
  text-align: center;
  font-size: 2rem;
}

/*
=============== 
Single Product
===============
*/
.home-link {
  display: block;
  width: 150px;
  margin: 2rem auto;
  text-align: center;
}

.product {
  padding: 5rem 0;
  width: 90vw;
  max-width: 1200px;
  margin: 0 auto;
}

.product-loading {
  text-align: center;
}

.product-wrapper img {
  height: 15rem;
  border-radius: var(--borderRadius);
}

.product-color {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: #222;
  margin: 0.5rem 0.5rem 0.25rem 0;
}

.product-info {
  padding-top: 1rem;
}

.product-info h3 {
  margin: 0;
  margin-bottom: 0.25rem;
}

.product-info h5 {
  color: var(--grey-500);
  margin: 0;
  margin-bottom: 0.25rem;
}

.product span {
  color: var(--grey-800);
}

.product p {
  margin: 0;
  margin-bottom: 1.25rem;
}

@media screen and (min-width: 768px) {
  .product-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 2rem;
  }

  .product-wrapper img {
    height: 100%;
    max-height: 500px;
  }
}