.hidden{
    display: none;
}


:root { 
  --iris: #4d5ae5;
  --social-bg: #4d5ae5;
  --icon-fill: #f4f4fd;
}

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

}

element,style {
  max-width: 264px;
}

body {
  font-family: "Roboto", sans-serif;
  color: #434455;
  background-color: #fff;
  margin: 0;
}

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

button{
cursor: pointer;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin: 0;
}

ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

a {
  text-decoration: none;
}

/* ====== Utilities ====== */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  border: 0;
  padding: 0;
  white-space: nowrap;
  clip-path: inset(100%);
  clip: rect(0 0 0 0);
  overflow: hidden;
}

.container {
  width: 320px;           
  margin: 0 auto;          
  padding: 0 16px;        
}

@media (min-width: 768px) {
  .container {
    width: 768px;              
  }
}

@media (min-width: 1158px) {
  .container {              
    width: 1158px;                     
    padding: 0 15px;  }
   
}

/* HEADER */

.site-header {
  border-bottom: 1px solid #e7e9fc; 
  box-shadow: 0px 2px 1px rgba(46, 47, 66, 0.08),
              0px 1px 1px rgba(46, 47, 66, 0.16),
              0px 1px 6px rgba(46, 47, 66, 0.08);
}

.header-container {
  display: flex;           
  align-items: center;
  justify-content: space-between;
}

.nav-list .contacts {
display: none;
}


/* ====== Logo ====== */
.logo {
  font-family: "Raleway", sans-serif;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.17;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #4d5ae5;
}

.header-logo {
  padding: 16px 0;   
  display: block;  
}
.header-logo  .logo-part {
    color: #2e2f42;
}

.burger-btn{
padding: 0;
border: none;
background-color: transparent ;
}

.burger-icon{
display: block;
fill: #2f2f37;
}


@media (min-width: 768px) {
.burger-btn{
display: block;
}
}

.main-nav {
  display: flex;
  align-items: center;     
}

.nav-list{
display: flex;
align-items: center;
gap: 40px;
}

.nav-link {
  display: block;
  padding: 24px 0;         
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #2e2f42;
  position: relative;
  transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover,
.nav-link:focus {
  color: #404bbf;
}

.nav-link.current {
  color: #404bbf;
}

.nav-link.current::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 4px;
  background-color: #404bbf;
  border-radius: 2px;
}



.header-logo {
  margin-right: 120px; 
  padding: 24px 0;

}
.сontacts{
    font-style: normal;
  display: block;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;              
}

.contact-link {
  display: block;
  font-size: 12px;
  line-height: 1.17;
  letter-spacing: 0.04em;
  color: #434455;
  transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover,
.nav-link:focus {
  color: #404bbf;
}


@media screen and (min-width: 1158px) {
.header-logo
{margin-right: 76px; 
}}

.contact-list {
  flex-direction: row;
  align-items: center;
  gap: 40px;               
}

.contact-link {
  padding: 24px 0;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  
}




/* Mobile menu */

.mobile-menu{
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color:#fff;
  
  opacity: 0;
  visibility: hidden;
  pointer-events: none;


   transition: opacity 250ms cubic-bezier(0.4, 0, 0.2, 1),
              visibility 250ms cubic-bezier(0.4, 0, 0.2, 1);
}


.mobile-menu.is-open{
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}


.mobile-menu-container{
  position: relative;
  padding-top: 72px;
  padding-bottom: 40px;

  display: flex;
  flex-direction: column;
  height: 100%;
}

.mobile-menu-close{
  position: absolute;
  top: 24px;
  right: 24px;
}

.mobile-menu-nav{
  margin-bottom: auto;
}



@media screen and (min-width: 1158px) {
.mobile-menu
{display: none; 
   }
}