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

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

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

a {
    text-decoration: none;
}

img {
    display: block;
}

.container {
    max-width: 1158px;
    padding: 0 15px;
    margin: 0 auto;
}

/* header */

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

.header-container {
    display: flex;
    align-items: center;
}

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

.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: 24px 0;
    margin-right: 76px;
}

.header-logo .logo-part {
    color: #2e2f42;
}

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

.nav-link {
    display: block;
    padding: 24px 0;
    font-weight: 500;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #2e2f42;
    transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link.current {
    position: relative;
}

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

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

.contacts {
    font-style: normal;
    margin-left: auto;
}

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

.contacts-link {
    display: block;
    padding: 24px 0;
    font-weight: 400;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #434455;
    transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* main-section-1 */

.effective {
    background-image: linear-gradient(rgba(46, 47, 66, 0.7), rgba(46, 47, 66, 0.7)), url(../images/img-11.jpg);
    max-width: 1440px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    padding: 188px 0;
    margin-right: auto;  
    margin-left: auto; 
    background-color: #2e2f42;
}

.effective-title {
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 48px;
    max-width: 496px;
    font-size: 56px;
    line-height: 1.07;
    letter-spacing: 0.02em;
    text-align: center;
    color: #FFFFFF;
}

.effective-button { 
    transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
    margin-left: auto;
    margin-right: auto;
    display: block;
    min-width: 169px;
    height: 56px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background-color: #4D5AE5;
    font-weight: 500;
    line-height: 1.5;
    letter-spacing: 0.04em;
    color: #FFFFFF;
    cursor: pointer;
}

.effective-button:hover,
.effective-button:focus {
    background-color: #404BBF
}

/* main-section-2 */

.success {
    padding: 120px 0;
}

.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;
}

.success-list {
    display: flex;
    gap: 24px;
}

.success-item {
    width: calc((100% - 72px) / 4);
}

.success-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 112px;
    margin-bottom: 8px;
    border-radius: 4px;
    border: 1px solid #8e8f99;
    background-color: #F4F4FD;
}

.success-title {
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 20px;
    line-height: 1.2;
    letter-spacing: 0.02em;
    color: #2e2f42;
}

.success-text {
    font-weight: 400;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #434455;
}

/* main-section-3 */

.team {
    background-color: #F4F4FD;
    padding: 120px 0;
}

.team-title {
    margin-bottom: 72px;
    font-weight: 700;
    font-size: 36px;
    line-height: 1.11;
    letter-spacing: 0.02em;
    text-align: center;
    text-transform: capitalize;
    color: #2e2f42;
}

.team-list {
    display: flex;
    gap: 24px;
}

.team-member {
    box-shadow: 0px 1px 6px rgba(46, 47, 66, 0.08), 0px 1px 1px rgba(46, 47, 66, 0.16), 0px 2px 1px rgba(46, 47, 66, 0.08);
    width: calc((100% - 72px) / 4);
    border-radius: 0px 0px 4px 4px;
    background-color: #FFFFFF;
}

.team-member-info {
    padding: 32px 0;
    text-align: center;
}

.team-member-title {
    text-align: center;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 20px;
    line-height: 1.2;
    letter-spacing: 0.02em;
    color: #2e2f42;
}

.team-member-text {
    text-align: center;
    font-weight: 400;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #434455;
}

.team-social {
    display: flex;
    justify-content: center;
    margin-top: 8px;
    gap: 24px;
}

.team-social-item {
    width: 40px;
    height: 40px;
}

.team-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #4d5ae5;
    transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.team-social-link:hover,
.team-social-link:focus {
    background-color: #404bbf;
}

.team-social-icon {
    fill: #f4f4fd;
}

/* main-section-4 */

.portfolio {
    padding-top: 120px;
    padding-bottom: 120px;
}

.portfolio-title {
    margin-bottom: 72px;
    font-weight: 700;
    font-size: 36px;
    line-height: 1.11;
    letter-spacing: 0.02em;
    text-align: center;
    text-transform: capitalize;
    color: #2e2f42;
}

.portfolio-list {
    display: flex;
    flex-wrap: wrap;
    column-gap: 24px;
    row-gap: 48px;
}

.portfolio-member {
    width: calc((100% - 48px) / 3);
    transition: box-shadow 250ms cubic-bezier(0.4, 0, 0.2, 1);
}


.portfolio-member:hover {
    box-shadow: 0px 1px 6px rgba(46, 47, 66, 0.08),
        0px 1px 1px rgba(46, 47, 66, 0.16),
        0px 2px 1px rgba(46, 47, 66, 0.08);
}

.portfolio-member-item {
    position: relative;
    overflow: hidden;
}

.portfolio-member:hover .overlay-text {
    transform: translateY(0%);
}

.overlay-text{
    position: absolute;
    top: 0;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #f4f4fd;
    padding: 40px 32px;
    height: 100%;
    width: 100%;
    background-color: #4d5ae5;
    transform: translateY(100%);
    transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
}


.portfolio-member-info {
    padding: 32px 16px;
    border: 1px solid #e7e9fc;
    border-top: none;
}

.portfolio-member-titie {
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 20px;
    line-height: 1.2;
    letter-spacing: 0.02em;
    color: #2e2f42;
}

.portfolio-member-text {
    font-weight: 400;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #434455;
}

/* footer */

.footer-container {
    display: flex; 
    align-items: baseline;
}

.footer-logo-container {
    margin-right: 120px
}

.page-footer {
    background-color: #2e2f42;
    padding: 100px 0;
}

.logo {
    display: inline-block;
}

.footer-logo {
    margin-bottom: 16px;
}
.footer-logo .logo-part {
    color: #f4f4fd;
}
.footer-text {
    max-width: 264px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #F4F4FD;
}

.footer-social-text {
    margin-bottom: 16px;
    font-weight: 500;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #FFFFFF
}

.footer-social-list {
    display: flex;
    gap: 16px;
}

.footer-social-item {
    width: 40px;
    height: 40px;
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #4d5ae5;
    transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-social-link:hover,
.footer-social-link:focus {
    background-color: #31d0aa;
}

.footer-social-icon {
    fill: #f4f4fd;
}