@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

/* VARIABLES CSS */
:root {
  --header-height: 3.5rem; 

  /* Colors */
  --hue:152 ;
  --first-color: hsl(152, 24%, 32%);
  --first-color-alt: hsl(152, 24%, 28%);
  --first-color-light: hsl(152, 24%, 66%);
  --first-color-lighten: hsl(152, 24%, 92%);
  --title-color: hsl(152, 4%, 15%);
  --text-color: hsl(152, 4%, 35%);
  --text-color-light: hsl(152, 4%, 55%);
  --body-color: hsl(152, 0%, 100%);
  --container-color: #FFF;

/*  fonts */
  --body-font: 'Poppins', sans-serif;
  --big-font-size: 2rem;
  --h1-font-size: 1.5rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1rem;
  --normal-font-size: .938rem;
  --small-font-size: .813rem;
  --smaller-font-size: .75rem;

  --font-medium: 500;
  --font-semi-bold: 600;

/* margin bottom */
  --mb-0-5: .5rem;
  --mb-0-75: .75rem;
  --mb-1: 1rem;
  --mb-1-5: 1.5rem;
  --mb-2: 2rem;
  --mb-2-5: 2.5rem;

  --z-tooltip: 10;
  --z-fixed: 100;
}

/* Responsive typography */
@media screen and (min-width: 968px) {
  :root {
    --big-font-size: 3.5rem;
    --h1-font-size: 2.25rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 1rem;
    --small-font-size: .875rem;
    --smaller-font-size: .813rem;
  }
}

/* start componrnts */
*{
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html{
  scroll-behavior: smooth;
}

body,
button,
input,
textarea{
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
}

body{
  margin: var(--header-height) 0 0 0;
  background-color: var(--body-color);
  color: var(--text-color);
  transition: .4s; 
}

button{
  cursor: pointer;
  border: none;
  outline: none;
}

h1,h2,h3{
  color: var(--title-color);
  font-weight: var(--font-semi-bold);
}

ul{
  list-style: none;
}

a{
  text-decoration: none;
}

img{
  max-width: 100%;
  height: auto;
}

/* Theme variables */
body.dark-theme{
  --first-color-dark: hsl(152, 8%, 20%);
  --title-color: hsl(152, 4%, 95%);
  --text-color: hsl(152, 4%, 75%);
  --body-color: hsl(152, 8%, 12%);
  --container-color: hsl(152, 8%, 16%);
}

/* Button Dark/Light */
.change-theme{
  color: var(--title-color);
  font-size: 1.15rem;
  cursor: pointer;
}

.nav-btns{
  display: inline-flex;
  align-items: center;
  column-gap: 1rem;
}

/* Color changes in some parts of 
the website, in dark theme */

.dark-theme .steps-bg,
.dark-theme .questions{
  background-color: var(--first-color-dark);
}

.dark-theme .product-circle,
.dark-theme .footer-subscribe{
  background-color: var(--container-color);
}

.dark-theme .scroll-header{
  box-shadow: 0 1px 4px hsla(152, 4%, 4%, .3);
}

/* REUSABLE CSS CLASSES */
.section{
  padding: 5.5rem 0 1rem;
}

.section-title,
.section-title-center{
  font-size: var(--h2-font-size);
  margin-bottom: var(--mb-2);
  line-height: 140%;
}

.section-title-center{
  text-align: center;
}

.container{
  max-width: 968px;
  margin-left: var(--mb-1-5);
  margin-right: var(--mb-1-5);
}

.grid{
  display: grid;
}

.main{
  overflow: hidden; 
}

/*start header*/
.header{
  width: 100%;
  background-color: var(--body-color);
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-fixed);
  transition: .4s; /*For animation dark mode*/
}

/* start nav */
.nav{
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo,
.nav-toggle,
.nav-close{
  color: var(--title-color);
}

.nav-logo{
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: -1px;
  display: inline-flex;
  align-items: center;
  column-gap: .5rem;
  transition: .3s;
}

.nav-logo-icon{
  font-size: 1.15rem;
  color: var(--first-color);
}

.nav-logo:hover{
  color: var(--first-color);
}

.nav-toggle{
  display: inline-flex;
  font-size: 1.25rem;
  cursor: pointer;
}

@media screen and (max-width: 767px){
  .nav-menu{
    position: fixed;
    background-color: var(--container-color);
    width: 80%;
    height: 100%;
    top: 0;
    right: -100%;
    box-shadow: -2px 0 4px hsla(152, 24%, 15%, .1);
    padding: 4rem 0 0 3rem;
    border-radius: 1rem 0 0 1rem;
    transition: .3s;
    z-index: var(--z-fixed);
  }
}

.nav-close{
  font-size: 1.5rem;
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  cursor: pointer;
}

.nav-list{
  display: flex;
  flex-direction: column;
  row-gap: 1.5rem;
}

.nav-link{
  color: var(--title-color);
  font-weight: var(--font-medium);
  transition: .3s;
}

.nav-link:hover{
  color: var(--first-color);
}

/* Show menu */
.show-menu{
  right: 0;
}

/* Change background header */
.scroll-header{
  box-shadow: 0 1px 4px hsla(152, 4%, 15%, .1);
}

/* Active link */
.active-link{
  position: relative;
  color: var(--first-color);
}

.active-link::after{
  content: '';
  position: absolute;
  bottom: -.5rem;
  left: 0;
  width: 50%;
  height: 2px;
  background-color: var(--first-color);
}
/*end header*/

/*start home section */
.home{
  padding: 3.5rem 0 2rem;
}

.home-container{
  position: relative;
  row-gap: 2rem;
}

.home-img{
  width: 200px;
  justify-self: center;
}

.home-title{
  font-size: var(--big-font-size);
  line-height: 140%;
  margin-bottom: var(--mb-1);
}

.home-description{
  margin-bottom: var(--mb-2-5);
}

.home-social{
  position: absolute;
  top: 2rem;
  right: -1rem;
  display: grid;
  justify-items: center;
  row-gap: 3.5rem;
}

.home-social-follow{
  font-weight: var(--font-medium);
  font-size: var(--smaller-font-size);
  color: var(--first-color);
  position: relative;
  transform: rotate(90deg);
}

.home-social-follow::after{
  content: '';
  position: absolute;
  width: 1rem;
  height: 2px;
  background-color: var(--first-color);
  right: -45%;
  top: 50%;
}

.home-social-links{
  display: inline-flex;
  flex-direction: column;
  row-gap: .25rem;
}

.home-social-link{
  font-size: 1rem;
  color: var(--first-color);
  transition: .3s;
}

.home-social-link:hover{
  transform: translateX(.25rem);
}

/* BUTTONS */
.button{
  display: inline-block;
  background-color: var(--first-color);
  color: #FFF;
  padding: 1rem 1.75rem;
  border-radius: .5rem;
  font-weight: var(--font-medium);
  transition: .3s;
}

.button:hover{
  background-color: var(--first-color-alt);
}

.button-icon{
  transition: .3s;
}

.button:hover .button-icon{
  transform: translateX(.25rem);
}

.button-flex{
  display: inline-flex;
  align-items: center;
  column-gap: .5rem;
}

.button-link{
  color: var(--first-color);
  font-weight: var(--font-medium);
}

.button-link:hover .button-icon{
  transform: translateX(.25rem);
}
/*and home section*/

/*start about section*/
.about-container{
  row-gap: 2rem;
}

.about-img{
  width: 280px;
  justify-self: center;
}

.about-title{
  margin-bottom: var(--mb-1);
}

.about-description{
  margin-bottom: var(--mb-2);
}

.about-details{
  display: grid;
  row-gap: 1rem;
  margin-bottom: var(--mb-2-5);
}

.about-details-description{
  display: inline-flex;
  column-gap: .5rem;
  font-size: var(--small-font-size);
}

.about-details-icon{
  font-size: 1rem;
  color: var(--first-color);
  margin-top: .15rem;
}
/*and about section */

/*start steps section */
.steps-bg{
  background-color: var(--first-color);
  padding: 3rem 2rem 2rem;
  border-radius: 1rem;
}

.steps-container{
  gap: 2rem;
  padding-top: 1rem;
}

.steps-title{
  color: #FFF;
}

.steps-card{
  background-color: var(--container-color);
  padding: 2.5rem 3rem 2rem 1.5rem;
  border-radius: 1rem;
}

.steps-card-number{
  display: inline-block;
  background-color: var(--first-color-alt);
  color: #FFF;
  padding: .5rem .75rem;
  border-radius: .25rem;
  font-size: var(--h2-font-size);
  margin-bottom: var(--mb-1-5);
  transition: .3s;
}

.steps-card-title{
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-0-5);
}

.steps-card-description{
  font-size: var(--small-font-size);
}

.steps-card:hover .steps-card-number{
  transform: translateY(-.25rem);
}
/*end steps section */

/*start products section*/
.product-description{
  text-align: center;
}

.product-container{
  padding: 3rem 0;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem 3rem;
}

.product-card{
  display: grid;
  position: relative;
}

.product-img{
  position: relative;
  width: 120px;
  justify-self: center;
  margin-bottom: var(--mb-0-75);
  transition: .3s;
}

.product-title,
.product-price{
  font-size: var(--small-font-size);
  font-weight: var(--font-semi-bold);
  color: var(--title-color);
}

.product-title{
  margin-bottom: .25rem;
}

.product-button{
  position: absolute;
  right: 0;
  bottom: 0;
  background-color: var(--first-color);
  color: #FFF;
  padding: .25rem;
  border-radius: .35rem;
  font-size: 1.15rem;
}

.product-button:hover{
  background-color: var(--first-color-alt);
}

.product-circle{
  width: 90px;
  height: 90px;
  background-color: var(--first-color-lighten);
  border-radius: 50%;
  position: absolute;
  top: 18%;
  left: 5%;
}

.product-card:hover .product-img{
  transform: translateY(-.5rem);
}
/*end products section*/

/*start questions*/
.questions{
  background-color: var(--first-color-lighten);
}

.questions-container{
  gap: 1.5rem;
  padding: 1.5rem 0;
}

.questions-group{
  display: grid;
  row-gap: 1.5rem;
}

.questions-item{
  background-color: var(--container-color);
  border-radius: .25rem;
}

.questions-item-title{
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
}

.questions-icon{
  font-size: 1.25rem;
  color: var(--title-color);
}

.questions-description{
  font-size: var(--smaller-font-size);
  padding: 0 1.25rem 1.25rem 2.5rem;
}

.questions-header{
  display: flex;
  align-items: center;
  column-gap: .5rem;
  padding: .75rem .5rem;
  cursor: pointer;
}

.questions-content{
  overflow: hidden;
  height: 0;
}

.questions-item,
.questions-header,
.questions-item-title,
.questions-icon,
.questions-description,
.questions-content{
  transition: .3s;
}

.questions-item:hover{
  box-shadow: 0 2px 8px hsla(152, 4%, 15%, .15);
}

/*Rotate icon, change color of titles and background*/
.accordion-open .questions-header,
.accordion-open .questions-content{
  background-color: var(--first-color);
}

.accordion-open .questions-item-title,
.accordion-open .questions-description,
.accordion-open .questions-icon{
  color: #FFF;
}

.accordion-open .questions-icon{
  transform: rotate(45deg);
}
/*end questions*/

/*start contact */
.contact-container{
  row-gap: 3.5rem;
}

.contact-data{
  display: grid;
  row-gap: 2rem;
}

.contact-subtitle{
  font-size: var(--normal-font-size);
  font-weight: var(--font-medium);
  color: var(--text-color);
  margin-bottom: var(--mb-0-5);
}

.contact-description{
  display: inline-flex;
  align-items: center;
  column-gap: .5rem;
  color: var(--title-color);
  font-weight: var(--font-medium);
}

.contact-icon{
  font-size: 1.25rem;
}

.contact-inputs{
  display: grid;
  row-gap: 2rem;
  margin-bottom: var(--mb-2-5);
}

.contact-content{
  position: relative;
  height: 3rem;
  border-bottom: 1px solid var(--text-color-light);
}

.contact-input{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 1rem 1rem 1rem 0;
  background: none;

  color: var(--text-color);

  
  border: none;
  outline: none;
  z-index: 1;
}

.contact-label{
  position: absolute;
  top: .75rem;
  width: 100%;
  font-size: var(--small-font-size);
  color: var(--text-color-light);
  transition: .3s;
}

.contact-area{
  height: 7rem;
}

.contact-area textarea{
  resize: none;
}

/*Input focus move up label*/
.contact-input:focus + .contact-label{
  top: -.75rem;
  left: 0;
  font-size: var(--smaller-font-size);
  z-index: 10;
}

/*Input focus sticky top label*/
.contact-input:not(:placeholder-shown).contact-input:not(:focus) + .contact-label{
  top: -.75rem;
  font-size: var(--smaller-font-size);
  z-index: 10;
}
/*end contact */

/*start footer*/
.footer-container{
  row-gap: 3rem;
}

.footer-logo{
  display: inline-flex;
  align-items: center;
  column-gap: .5rem;
  color: var(--title-color);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: var(--mb-2-5);
  transition: .3s;
}

.footer-logo-icon{
  font-size: 1.15rem;
  color: var(--first-color);
}

.footer-logo:hover{
  color: var(--first-color);
}

.footer-title{
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-1-5);
}

.footer-subscribe{
  background-color: var(--first-color-lighten);
  padding: .75rem;
  display: flex;
  justify-content: space-between;
  border-radius: .5rem;
}

.footer-input{
  width: 70%;
  padding: 0 .5rem;
  background: none;
  color: var(--text-color);
  border: none;
  outline: none;
}

.footer-button{
  padding: 1rem;
}

.footer-data{
  display: grid;
  row-gap: .75rem;
}

.footer-information{
  font-size: var(--small-font-size);
}

.footer-social{
  display: inline-flex;
  column-gap: .75rem;
}

.footer-social-link{
  font-size: 1rem;
  color: var(--text-color);
  transition: .3s;
}

.footer-social-link:hover{
  transform: translateY(-.25rem);
}

.footer-cards{
  display: inline-flex;
  align-items: center;
  column-gap: .5rem;
}
.footer-card{
  width: 35px;
}

.footer-copy{
  text-align: center;
  font-size: var(--smaller-font-size);
  color: var(--text-color-light);
  margin: 5rem 0 1rem;
}
/*start footer*/

/*start scroll up */
.scrollup{
  position: fixed;
  background-color: var(--first-color);
  right: 1rem;
  bottom: -30%;
  display: inline-flex;
  padding: .5rem;
  border-radius: .25rem;
  z-index: var(--z-tooltip);
  opacity: .8;
  transition: .4s;
}

.scrollup-icon{
  font-size: 1rem;
  color: #FFF;
}

.scrollup:hover{
  background-color: var(--first-color-alt);
  opacity: 1;
}

/*show scroll up */
.show-scroll{
  bottom: 3rem;
}

/*scroll bar*/
::-webkit-scrollbar{
  width: .6rem;
  background: hsl(152, 4%, 53%);
}

::-webkit-scrollbar-thumb{
  background: hsl(152, 4%, 29%);
  border-radius: .5rem;
}

/*Responsive ans media query*/
/* For small devices */
@media screen and (max-width: 320px){
  .container{
    margin-left: var(--mb-1);
    margin-right: var(--mb-1);
  }

  .home-img{
    width: 180px;
  }
  .home-title{
    font-size: var(--h1-font-size);
  }

  .steps-bg{
    padding: 2rem 1rem;
  }
  .steps-card{
    padding: 1.5rem;
  }

  .product-container{
    grid-template-columns: .6fr;
    justify-content: center;
  }
}

/* For medium devices */
@media screen and (min-width: 576px){
  .steps-container{
    grid-template-columns: repeat(2, 1fr);
  }

  .product-description{
    padding: 0 4rem;
  }
  .product-container{
    grid-template-columns: repeat(2, 170px);
    justify-content: center;
    column-gap: 5rem;
  }

  .footer-subscribe{
    width: 400px;
  }
}

@media screen and (min-width: 767px){
  body{
    margin: 0;
  }

  .nav{
    height: calc(var(--header-height) + 1.5rem);
    column-gap: 3rem;
  }
  .nav-toggle,
  .nav-close{
    display: none;
  }
  .nav-list{
    flex-direction: row;
    column-gap: 3rem;
  }
  .nav-menu{
    margin-left: auto;
  }

  .home-container,
  .about-container,
  .questions-container,
  .contact-container,
  .footer-container{
    grid-template-columns: repeat(2, 1fr);
  }
  
  .home{
    padding: 10rem 0 5rem;
  }
  .home-container{
    align-items: center;
  }
  .home-img{
    width: 280px;
    order: 1;
  }
  .home-social{
    top: 30%;
  }

  .questions-container{
    align-items: flex-start;
  }

  .footer-container{
    column-gap: 3rem;
  }
  .footer-subscribe{
    width: initial;
  }
}

/* For large devices */
@media screen and (min-width: 992px){
  .container{
    margin-left: auto;
    margin-right: auto;
  }

  .section{
    padding: 8rem 0 1rem;
  }
  .section-title,
  .section-title-center{
    font-size: var(--h1-font-size);
  }

  .home{
    padding: 13rem 0 5rem;
  }
  .home-img{
    width: 350px;
  }
  .home-description{
    padding-right: 7rem;
  }

  .about-img{
    width: 380px;
  }

  .steps-container{
    grid-template-columns: repeat(3, 1fr);
  }
  .steps-bg{
    padding: 3.5rem 2.5rem;
  }
  .steps-card-title{
    font-size: var(--normal-font-size);
  }

  .product-description{
    padding: 0 16rem;
  }
  .product-container{
    padding: 4rem 0;
    grid-template-columns: repeat(3, 185px);
    gap: 4rem 6rem;
  }
  .product-img{
    width: 160px;
  }
  .product-circle{
    width: 110px;
    height: 110px;
  }
  .product-title,
  .product-price{
    font-size: var(--normal-font-size);
  }

  .questions-container{
    padding: 1rem 0 4rem;
  }
  .questions-title{
    text-align: initial;
  }
  .questions-group{
    row-gap: 2rem;
  }
  .questions-header{
    padding: 1rem;
  }
  .questions-description{
    padding: 0 3.5rem 2.25rem 2.75rem;
  }

  .footer-logo{
    font-size: var(--h3-font-size);
  }
  .footer-container{
    grid-template-columns: 1fr .5fr .5fr .5fr;
  }
  .footer-copy{
    margin: 7rem 0 2rem;
  }
}

@media screen and (min-width: 1200px){
  .home-social{
    right: -3rem;
    row-gap: 4.5rem;
  }
  .home-social-follow{
    font-size: var(--small-font-size);
  }
  .home-social-follow::after{
    width: 1.5rem;
    right: -60%;
  }
  .home-social-link{
    font-size: 1.15rem;
  }

  .about-container{
    column-gap: 7rem;
  }

  .scrollup{
    right: 3rem;
  }
}