@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;500;700&display=swap');


*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

html{
    scroll-behavior: smooth;
}

body {
    max-width: 100vw;
    overflow-x: hidden;                       /* damit ich nicht nach rechts scrollen kann*/   
}

nav {
    height: 80px;
    display: flex;
}

img {
    width: 100%;
    height: 100%;
    max-height: 50vh;
}

p {
    line-height: 1.5;
}

a {
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.nav__container {
    width: 100%;
    max-width: 1200px;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0 auto;
}

.purple{
    color: #7342d6;
}

.logo{
    width: 160px;
}

ul{
    display: flex;
}

li{
    list-style-type: none;
}

.nav__link{
    margin-left: 16px;
    text-decoration: none;
    font-size: 20px;
    color: #7342d6;
    font-weight: bold;
    padding: 8px;
}

.nav__link:hover{
    text-decoration: underline;
}

.nav__link--primary{
    border: 2px solid #7342d6;
    border-radius: 4px;
}

.nav__link--primary:hover{
    text-decoration: none;
}

.btn__menu{
    background-color: transparent;
    font-size: 40px;
    text-align: center;
    border: none;
    color: #7342d6;
    display: none;
}

.menu__backdrop{
    position: absolute;                 /* without position: absolute other elements are positioned based on this, but we wont this in "its own world*/
    background-color: #242424;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 300ms ease;
    opacity: 0;
    visibility: hidden;
}

.menu--open .menu__backdrop{            /*"when this class exists 'menu--open' show me menu__backdrop"*/
    visibility: visible;
    opacity: 1;
}

.menu--open{
    max-height: 100vw;
    overflow-y: hidden;
}

.menu__links{
    display: flex;
    flex-direction: column;
    align-items: center;
}

.menu__list{
    padding: 32px  0;
}

.menu__link{
    font-size: 40px;
    color: white;
}

.btn__menu--close{
    position: absolute;
    right: 20px;
    top: 10px;
    padding: 8px;
    color: white;
}

/* 

LANDING

*/

#landing{
    background-color: rgba(115, 66, 214, 0.1);
}

header{
    height: calc(100vh - 80px);
}

.header__container{
    padding-top: 32px;
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
}

.header__description{
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    font-style: 56px;
    color: #7342d6;
    margin-bottom: 24px;
    text-align: center;
}

h2 {
    font-style: 32px;
    margin-bottom: 32px;
    text-align: center;
}

button{
    cursor: pointer;
}


button:active{                      /* :active = draufklicken*/
    transform: translateY(2px);
}

.btn{
    background-color: #7342d6;
    color: white;
    padding: 12px 24px;
    font-size: 20px;
    border-radius: 4px;
    border: none;
    display: flex;
    margin: 0 auto;
}
.btn__primary:hover{
    text-decoration: none;
}

.header__img--wrapper{
    padding: 20px;
    z-index: 2;
}

.header__img--edit{
    padding-bottom: 40px;
}

.container {
    padding: 56px 0;
}

.row{
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.row__column{
    display: flex;
    flex-direction: column;
    align-items: center;
}

.no-cursor{
    cursor: not-allowed;
}

/*

HIGHLIGHTS

*/

#highlights{
    position: relative;
    max-width: 100vw;
}

#highlights:before, #highlights:after{       /*:after heißt: Alles NACH "highlights" soll passieren :before heißt: Alles VOR "highlights" soll passieren*/ 
    background: url('assets/wave.svg');
    content: "";                             /* bei before: oder after: muss imer ein content dazustehen (meistens leerer inhalt)*/
    position: absolute;
    width: 101vw;
    height: 12vw;
    left: 0;
    background-size: cover;
    background-repeat: no-repeat;
    z-index: 1;
}

#highlights:before {                          
    transform: translateY(-100%);
    top: 1px;
}

#highlights:after{                               
    transform: translateY(100%) rotate(180deg);     /* rotate 180deg, damit sich das Bild um 180grad dreht*/
    bottom: 1px;
}
  

.highlight__wrapper{
    display: flex;
    flex-wrap: wrap;
}

.highlight{
    padding: 0 24px;
    width: calc(100% / 3);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.highlight__para {
    max-width: 280px
}


.highlight__subtitle{
    font-size: 20px;
    margin: 16px;
    text-align: center;

}

.highlight__img{
    border: 2px solid #7342d6;
    color: #7342d6;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    font-size: 32px;
    margin-bottom: 24px;
}

/* 

FEATURES

*/

#features{
    padding-top: 8vw;
    background-color: rgba(115, 66, 214, 0.1);
}

.books{
    display: flex;
    flex-wrap: wrap;  /* flex-wrap: wrap, um die Bücher nicht in einer Reihe bleiben sondern sich einreihen*/
}

.book{
    width: 25%;
    padding: 24px;
}

.book__img {
    max-height: 380px;
    transition: all 300ms ease;
    cursor: not-allowed;

}

.book__img--wrapper{
    margin-bottom: 8px;
    border-radius: 4px;
    overflow: hidden;
    display: flex;                  /* in diesem kontext: damit es innerhalb im rahmen zoomt, nicht den rahmen selbst vergrößert*/
}   

.book__img:hover {             /*when i hover this img i want to scale it*/
    transform: scale(1.03);
}

.book__title{
    font-size: 20px;
    margin-bottom: 8px;
}

.book__title:hover {
    text-decoration: underline;
    cursor: not-allowed;
}

.book__ratings{
    margin-bottom: 8px;
    color: #fabf2a;
}

.book__price--normal{
    text-decoration: line-through;
    padding-right: 6px;
    color: #bfbfbf;
}

/* 

EXPLORE

*/

#explore
{
    background-color: rgba(115, 66, 214, 0.1);
}

/* 

FOOTER

*/

footer {
    background-color: #242424;
}

.footer__logo{
    display: flex;
}

.footer__logo--img{
    width: 160px;
    filter: grayscale(1) invert(1)                  /* grayscale(1) macht alles in dark colors und bei invert(1) wird alles inverted => also wird es zu weiß */

}

.footer__link,
.footer__copyright{
    color: white;
}

.footer__list {
    margin: 20px 0 24px 0;
}

.footer__link {
    padding: 0 8px;
}

/* 
**

BOOKS PAGE

**
*/

#books__body {
    background-color: rgba(115, 66, 214, 0.1);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }
  
  #books__main {
    flex: 1;
  }
  
  .books__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
  }
  
  .books__header--title {
    margin-bottom: 0;
  }
  
  select {
    background-color: #fff;
    border-radius: 4px;
    border: 1px solid #dcdfe6;
    color: #606266;
    height: 40px;
    line-height: 40px;
    outline: none;
    padding: 0 16px;
    width: 100%;
    max-width: 200px;
  }
  
  .books__loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 60px;
    font-size: 60px;
    color: #7342d6;
  }
  
  .books__loading--spinner {
    display: none;
  }

  .books__loading .books__loading--spinner{
    display: block;
  }

  .fa-spinner {
    animation: rotate 600ms infinite linear;
  }
  
  @keyframes rotate{
    0% {
      transform: rotate(0);
    }
  
    100% {
      transform: rotate(360deg);
    }
  }

  
/* SMALL PHONES, TABLETS, LARGE SMARTPHONES */
@media (max-width: 768px) {
    .header__description{
        padding: 0 24px;
    }

    h1 {
        font-size: 40px;
    }

    h2{
        font-size: 26px;
    }

    button {
        font-size: 18px;
    }

    .book {
        width: 50%;
    }
}


/* SMALL PHONES, LARGE SMARTPONES */
@media (max-width: 550px){
    .nav__links{
        display: none;
    }

    .btn__menu{
        display: block;
    }
    .highlight{
        width: 100%;
    }

    .highlight:not(:last-child){
        margin-bottom: 24px;
    }
}