:root {
    --primary-font: "Roboto", sans-serif;
    --secondary-font: "Raleway", sans-serif;
    --iris: #4d5ae5;
    --ocean: #404bbf;
    --navy-blue: #2e2f42;
    --slate: #434455;
    --light-slate: #8e8f99;
    --cloud: #f4f4fd;
    --white: #ffffff;
    --cornflower: #e7e9fc;
    --dairy: #fcfcfc;
    --navy-blue-modal: rgba(46, 47, 66, 0.4);
    --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Глобальне скидання */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--primary-font);
    color: var(--slate);
    background-color: var(--white);
    line-height: 1.5;
    letter-spacing: 0.02em;
}

.list {
    list-style: none;
}

.link {
    text-decoration: none;
}

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    border: 0;
    padding: 0;
    clip: rect(0 0 0 0);
    overflow: hidden;
}

.container {
    width: 100%;
    max-width: 428px;
    padding: 0 16px;
    margin: 0 auto;
}

.section {
    padding: 96px 0;
}

/* HEADER */
.header {
    border-bottom: 1px solid var(--cornflower);
    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;
    height: 72px;
}

.navigation {
    display: flex;
    align-items: center;
}

.logo {
    font-family: var(--secondary-font);
    font-weight: 700;
    font-size: 18px;
    line-height: 1.17;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--iris);
    text-decoration: none;
}

.logo-studio-header {
    color: var(--navy-blue);
}

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

.menu-open-btn {
    border: none;
    background: transparent;
    padding: 0;
    line-height: 0;
    cursor: pointer;
}

/* HERO */
.hero {
    background-color: var(--navy-blue);
    background-image: linear-gradient(rgba(46, 47, 66, 0.7), rgba(46, 47, 66, 0.7)), url(../images/people_office.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    padding: 112px 0;
    text-align: center;
    max-width: 1440px;
    margin: 0 auto;
}

@media (min-resolution: 192dpi) {
    .hero {
        background-image: linear-gradient(rgba(46, 47, 66, 0.7), rgba(46, 47, 66, 0.7)), url(../images/people_office@2x.jpg);
    }
}

.hero-title {
    color: var(--white);
    font-size: 36px;
    line-height: 1.11;
    max-width: 320px;
    margin: 0 auto 72px;
}

.hero-btn {
    display: block;
    margin: 0 auto;
    min-width: 169px;
    height: 56px;
    background: var(--iris);
    color: var(--white);
    font-weight: 500;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color var(--transition);
}

.hero-btn:hover {
    background-color: var(--ocean);
}

/* ADVANTAGES */
.advantages-list {
    display: flex;
    flex-direction: column;
    gap: 72px;
}

.advantages-icon-box {
    display: none;
}

.advantages-subtitle {
    font-weight: 700;
    font-size: 36px;
    line-height: 1.11;
    color: var(--navy-blue);
    margin-bottom: 8px;
    text-align: center;
}

.advantages-text {
    font-weight: 400;
    font-size: 16px;
    line-height: 1.5;
    color: var(--slate);
}

/* TEAM */
.team {
    background-color: var(--cloud);
}

.section-title {
    font-size: 36px;
    line-height: 1.11;
    text-align: center;
    letter-spacing: 0.02em;
    text-transform: capitalize;
    color: var(--navy-blue);
    margin-bottom: 72px;
}

.team-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 72px;
}

.team-item {
    background: var(--white);
    border-radius: 0 0 4px 4px;
    box-shadow: 0px 1px 6px rgba(46, 47, 66, 0.08);
    width: 264px;
}

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

.team-name {
    font-weight: 500;
    font-size: 20px;
    color: var(--navy-blue);
    margin-bottom: 8px;
}

.team-role {
    font-size: 16px;
    margin-bottom: 8px;
}

.social-list {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: var(--iris);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition);
}

.social-icon {
    fill: var(--cloud);
}

.social-link:hover {
    background-color: var(--ocean);
}

/* PORTFOLIO */
.portfolio-list {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.portfolio-item {
    width: 100%;
    transition: box-shadow var(--transition);
}

.portfolio-overlay-box {
    position: relative;
    overflow: hidden;
}

.portfolio-overlay-box img {
    width: 100%;
    height: auto;
    display: block;
}

.overlay-text {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--iris);
    color: var(--cloud);
    padding: 40px 32px;
    transform: translateY(100%);
    transition: transform var(--transition);
}

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

.portfolio-meta {
    padding: 32px 16px;
    border: 1px solid var(--cornflower);
    border-top: none;
}

.portfolio-subtitle {
    font-weight: 500;
    font-size: 20px;
    color: var(--navy-blue);
    margin-bottom: 8px;
}

/* FOOTER */
.footer {
    background-color: var(--navy-blue);
    padding: 100px 0;
}

.footer-logo-box {
    text-align: center;
    margin-bottom: 72px;
}

.footer-logo {
    display: inline-block;
}

.logo-studio-footer {
    color: var(--cloud);
}

.footer-text {
    color: var(--cloud);
    line-height: 1.5;
    width: 264px;
    margin: 16px auto 0;
    text-align: left;
}

.footer-social-box {
    text-align: auto;
    margin-bottom: 72px;
}

.footer-subtitle {
    color: var(--white);
    font-weight: 500;
    margin-bottom: 16px;
    text-align: center;
}

.footer-socials {
    gap: 16px;
}

.footer-social-link {
    transition: background-color var(--transition);
}

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

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

.footer-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.footer-input {
    width: 100%;
    height: 40px;
    border: 1px solid var(--white);
    border-radius: 4px;
    background: transparent;
    color: var(--white);
    padding-left: 16px;
    font-size: 12px;
    box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.15);
    outline: none;
}

.footer-subscribe-btn {
    min-width: 165px;
    height: 40px;
    background: var(--iris);
    color: var(--white);
    border: none;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition);
}

.footer-subscribe-btn:hover,
.footer-subscribe-btn:focus {
    background-color: var(--ocean);
}

.footer-subscribe-box .footer-subtitle {
    text-align: auto;
}

/* TABLET (768px+) */
@media screen and (min-width: 768px) {
    .container {
        max-width: 768px;
    }

    .header-container {
        display: flex;
        align-items: center;
        height: 72px;
        justify-content: space-between;
    }

    .menu-open-btn {
        display: none;
    }

    .nav-list {
        display: flex;
        gap: 40px;
        margin-left: 0;
    }

    .nav-link:hover,
    .nav-link:focus {
        color: var(--ocean);
    }

    .nav-link {
        color: var(--navy-blue);
        font-size: 16px;
        line-height: 1.5;
        letter-spacing: 0.02em;
        font-weight: 500;
        padding: 24px 0;
        display: block;
        position: relative;
        transition: color var(--transition);
    }

    .nav-link.current {
        color: var(--ocean);
    }

    .nav-link.current::after {
        content: "";
        position: absolute;
        bottom: -1px;
        left: 0;
        width: 100%;
        height: 4px;
        background: var(--ocean);
        border-radius: 2px;
    }

    .contacts {
        display: block;
        margin-left: auto;
    }

    .contacts-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
        align-items: flex-end;
    }

    .contact-link {
        color: var(--slate);
        font-size: 12px;
        line-height: 1.17;
        letter-spacing: 0.04em;
        transition: color var(--transition);
        font-style: normal;
    }

    .contact-link:hover {
        color: var(--ocean);
    }

    .hero {
        padding: 112px 0;
        background-image: linear-gradient(rgba(46, 47, 66, 0.7), rgba(46, 47, 66, 0.7)), url(../images/people_office.jpg);
    }

    .hero-title {
        font-size: 56px;
        max-width: 496px;
    }

    .advantages-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 72px 24px;
    }

    .advantages-item {
        width: calc((100% - 24px) / 2);
    }

    .advantages-subtitle {
        text-align: left;
    }

    .team-list {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 64px 24px;
    }

    .portfolio-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 72px 24px;
    }

    .portfolio-item {
        width: calc((100% - 24px) / 2);
    }

    .footer-container {
        display: flex;
        flex-wrap: wrap;
        align-items: baseline;
        text-align: left;
        padding-left: 108px;
        justify-content: flex-start;
    }

    .footer-logo-box {
        text-align: left;
        margin-right: 24px;
    }

    .footer-form {
        flex-direction: row;
        gap: 24px;
    }

    .footer-input {
        width: 264px;
    }

    .footer-subtitle {
        text-align: left;
    }

    .footer-social-box {
        text-align: left;
    }

    .footer-subscribe-box {
        text-align: left;
        margin-left: 0;
    }

    .navigation {
        gap: 40px;
    }
}

@media screen and (min-width: 768px) and (min-resolution: 192dpi) {
    .hero {
        background-image: linear-gradient(rgba(46, 47, 66, 0.7), rgba(46, 47, 66, 0.7)), url(../images/people_office@2x.jpg);
    }
}

/* DESKTOP (1158px+) */
@media screen and (min-width: 1158px) {
    .container {
        max-width: 1158px;
        padding: 0 15px;
    }

    .section {
        padding: 120px 0;
    }

    .navigation {
        gap: 76px;
    }

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

    .contact-link {
        font-size: 16px;
        font-style: normal;
    }

    .hero {
        padding: 188px 0;
        background-image: linear-gradient(rgba(46, 47, 66, 0.7), rgba(46, 47, 66, 0.7)), url(../images/people_office.jpg);
    }

    .advantages-icon-box {
        display: flex;
        align-items: center;
        justify-content: center;
        height: 112px;
        background: var(--cloud);
        border-radius: 4px;
        margin-bottom: 8px;
        border: 1px solid var(--light-slate);
    }

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

    .advantages-subtitle {
        font-size: 20px;
        font-weight: 500;
    }

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

    .portfolio-item {
        width: calc((100% - 48px) / 3);
    }

    .footer-container {
        padding-left: 15px;
        flex-wrap: nowrap;
    }

    .footer-logo-box {
        margin-right: 120px;
        margin-bottom: 0;
    }

    .footer-social-box {
        margin-right: 80px;
        margin-bottom: 0;
    }
}

@media screen and (min-width: 1158px) and (min-resolution: 192dpi) {
    .hero {
        background-image: linear-gradient(rgba(46, 47, 66, 0.7), rgba(46, 47, 66, 0.7)), url(../images/people_office@2x.jpg);
    }
}

/* MOBILE MENU STYLE */
.mobile-menu {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--white);
    transform: translateX(100%);
    transition: transform var(--transition);
}

.mobile-menu.is-open {
    transform: translateX(0);
}

.mobile-menu-container {
    display: flex;
    flex-direction: column;
    position: relative;
    height: 100%;
    width: 100%;
    padding: 80px 35px 40px 40px;
}

.mobile-menu-container .nav-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-bottom: auto;
}

.menu-close-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--cornflower);
    background: transparent;
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-bottom: auto;
}

.mobile-nav-item:not(:last-child) {
    margin-bottom: 40px;
}

.mobile-nav-link {
    font-weight: 700;
    font-size: 36px;
    line-height: 1.11;
    color: var(--navy-blue);
}

.mobile-nav-link.current {
    color: var(--ocean);
}

.mobile-contact-link {
    font-size: 20px;
    font-weight: 500;
    color: var(--slate);
    font-style: normal;
}

.mobile-contact-link.accent {
    font-size: 24px;
    color: var(--iris);
}

.mobile-contacts-box {
    margin-top: auto;
    width: 100%;
}

.mobile-contacts-box .social-list {
    display: flex;
    justify-content: space-between;
    width: 280px;
    height: 40px;
    margin: 48px auto 0;
}

.mobile-contacts-box .social-icon {
    width: 24px;
    height: 24px;
}

.mobile-contacts-item:not(:last-child) {
    margin-bottom: 40px;
}

/* BACKDROP & MODAL (ДЗ-5) */
.backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--navy-blue-modal);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
    z-index: 1000;
}

.backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 408px;
    min-height: 584px;
    background: var(--dairy);
    border-radius: 4px;
    padding: 72px 24px 24px;
    box-shadow: 0px 1px 1px rgba(0, 0, 0, 0.14);
    transition: transform var(--transition);
}

.modal-close-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--cornflower);
    border: 1px solid rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.modal-close-btn:hover,
.modal-close-btn:focus {
    background-color: var(--ocean);
    border: none;
}

.modal-caption {
    font-weight: 500;
    text-align: center;
    color: var(--navy-blue);
    margin-bottom: 16px;
}

.modal-field-wrapper {
    margin-bottom: 8px;
}

.modal-label {
    display: block;
    font-size: 12px;
    color: var(--light-slate);
    margin-bottom: 4px;
    line-height: 1.17;
    letter-spacing: 0.04em;
}

.modal-input-wrapper {
    position: relative;
}

.modal-input {
    width: 100%;
    height: 40px;
    border: 1px solid var(--navy-blue-modal);
    border-radius: 4px;
    background: transparent;
    padding-left: 38px;
    outline: transparent;
    transition: border-color var(--transition);
}

.modal-input:focus {
    border-color: var(--iris);
}

.modal-input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    transition: fill var(--transition);
}

.modal-input:focus+.modal-input-icon {
    fill: var(--iris);
}

.modal-field-wrapper-comment {
    margin-bottom: 16px;
}

.modal-textarea {
    width: 100%;
    height: 120px;
    border: 1px solid var(--navy-blue-modal);
    border-radius: 4px;
    background: transparent;
    padding: 8px 16px;
    outline: transparent;
    resize: none;
    transition: border-color var(--transition);
}

.modal-textarea:focus {
    border-color: var(--iris);
}

.modal-checkbox-wrapper {
    margin-bottom: 24px;
}

.modal-checkbox-label {
    font-size: 12px;
    line-height: 1.17;
    letter-spacing: 0.04em;
    color: var(--light-slate);
}

.modal-custom-checkbox {
    width: 16px;
    height: 16px;
    border: 1px solid var(--navy-blue-modal);
    border-radius: 2px;
    transition: background-color var(--transition), border var(--transition), fill var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    fill: transparent;
    margin-right: 8px;
}

.modal-checkbox:checked+.modal-checkbox-label .modal-custom-checkbox {
    background-color: var(--ocean);
    border: none;
    fill: var(--cloud);
}

.modal-privacy-link {
    color: var(--iris);
    text-decoration: underline;
}

.modal-submit-btn {
    display: block;
    margin: 0 auto;
    min-width: 169px;
    height: 56px;
    font-weight: 500;
    color: var(--white);
    background: var(--iris);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.15);
    transition: background-color var(--transition);
}