:root {
  --sans-serif: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
  --cyan: #0dcaf0;
  --darkcyan: #0f83ad;
  --blue: #002b41;
  --white: #F5FAF9;
  --grey: #f0f0f0da;
  --black: #000000;
}

body {
  font-family: var(--sans-serif);
}

/* Navigation Section */

nav {
  padding: 25px;
  background-color: var(--grey);
}

.fridge-logo {
  display: block;
  max-height: 10rem;
  margin-left: auto;
  margin-right: auto;
}

.logo h4 {
  font-size: 33px;
  font-weight: bold;
}

.logo,
.slogan {
  text-align: center;
  font-weight: bold;
  color: var(--black);
}

mark.blue {
  color: var(--darkcyan);
  background: none;
}

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

li {
  transition: all 0.5s ease-out;
}

li:hover {
  color: var(--darkcyan);
}

#recipes-container li,
#recipes-container2 li,
#recipes-container3 li {
  padding: 0.7rem;
}

/* Search Bar */

form {
  padding: 30px;
}

label {
  padding: 20px;
}

/* Front Page Hero Section */

main {
  padding: 0 3rem;
}

.front-page {
  margin: 10px;
}

.front-page p {
  padding: 1rem;
}

.front-image {
  max-width: 40rem;
  max-height: 40rem;
  border-radius: 15px;
}

.trending-img {
  border-radius: 15px;
}

h2 {
  padding: 1rem;
}

p {
  margin: 0;
  padding: 0 0.5rem;
}

/* Category and Card Section */
.card {
  border: none;
  transition: all 0.5s ease-out;
}

.card:hover {
  color: var(--darkcyan);
}

/* Detail Section */

.detail-img {
  max-width: 40rem;
  max-height: 40rem;
  border: var(--grey) solid 5px;
  border-radius: 15px;
}

#instruction-list {
  padding: 0 0.5rem 0 0;
}

#instruction-list h5 {
  padding: 0.5rem 0;
}

#instruction-list p {
  font-size: 15px;
  font-weight: bold;
  padding: 0.3rem 0;
}

/* Scroll button */

#myBtn {
  display: none;
  position: fixed; 
  bottom: 20px; 
  right: 30px; 
  z-index: 99; 
  border: none;
  outline: none;
  background-color: whitesmoke; 
  color: black; 
  cursor: pointer; 
  padding: 15px; 
  border-radius: 10px; 
  font-size: 18px; 
}

#myBtn:hover {
  background-color: #555; 
}

html {
  scroll-behavior: smooth;
}

/* Media Query */

@media screen and (max-width: 1200px) {
  main {
    padding: 0 2rem;
  }
  .logo h4 {
    font-size: 28px;
  }
}

@media screen and (max-width: 1024px) {
  main {
    padding: 0 1rem;
  }
  .logo h4 {
    font-size: 25px;
  }

  .front-page p {
    padding: 0.5rem;
  }
}

@media screen and (max-width: 768px) {
  main {
    padding: 0;
  }
  nav {
    padding: 10 0px;
  }
  .callout {
    border:none;
  }
  #instruction-list {
    padding: 1rem;
  }
}