:root {
    --black: #000;
    --white: #fff;
    --grey: #828282;
    --grey-dark: #454545;
    --border: #e0e0e0;
    --border-card: #f7f7f7;
    --divider: #e6e6e6;

    --radius: 8px;
    --shadow-control: 0 1px 2px rgba(0, 0, 0, .05);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, .1);
    --shadow-link: 0 2px 4px rgba(0, 0, 0, .25);

    --padding: 80px;
    --ease: .25s ease;
}

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

body {
    margin: 0;
    font-family: 'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5;
    color: var(--black);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: calc(1280px + var(--padding) * 2);
    margin: 0 auto;
    padding-inline: var(--padding);
}

.title {
    margin: 0;
    font-size: 64px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.02em;
}

.subtitle {
    margin: 0;
    font-size: 24px;
    font-weight: 400;
    color: var(--grey);
}

.heading {
    margin: 0;
    font-size: 40px;
    font-weight: 600;
    line-height: 1.1;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    font: inherit;
    color: var(--white);
    background: var(--black);
    border: 0;
    border-radius: var(--radius);
    box-shadow: var(--shadow-control);
    cursor: pointer;
    transition: box-shadow var(--ease), transform var(--ease);
}

.button:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
    transform: translateY(-1px);
}

.button:active {
    transform: translateY(0);
    opacity: .9;
}

.button--lg {
    padding: 16px 32px;
    font-size: 20px;
}

.link {
    display: inline-block;
    font-size: 20px;
    border-radius: 4px;
    transition: text-shadow var(--ease);
}

.link:hover,
.link:focus-visible {
    text-shadow: var(--shadow-link);
}

.header {
    position: relative;
    z-index: 30;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 164px;
}

.header__logo {
    font-size: 20px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 48px;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: 48px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 54px;
    height: 30px;
    padding: 0;
    background: none;
    border: 0;
    cursor: pointer;
}

.burger span {
    height: 6px;
    background: var(--black);
    border-radius: 2px;
    transition: transform var(--ease), opacity var(--ease);
}

.burger[aria-expanded='true'] span:nth-child(1) {
    transform: translateY(12px) rotate(45deg);
}

.burger[aria-expanded='true'] span:nth-child(2) {
    opacity: 0;
}

.burger[aria-expanded='true'] span:nth-child(3) {
    transform: translateY(-12px) rotate(-45deg);
}

.hero {
    padding: 110px 0 64px;
    text-align: center;
}

.hero__copy {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    max-width: 837px;
    margin: 0 auto;
}

.hero__image {
    aspect-ratio: 2 / 1;
    width: 100%;
    object-fit: cover;
    border-radius: var(--radius);
}

.section {
    padding: 60px 0;
}

.section__header {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 733px;
    margin-bottom: 32px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 48px;
    padding: 32px;
    border: 1px solid var(--border-card);
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    transition: transform var(--ease), box-shadow var(--ease);
}

.card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, .14);
    transform: scale(1.04);
}

.card__quote {
    margin: 0;
    font-size: 20px;
}

.card__author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.card__author div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.card__avatar {
    flex-shrink: 0;
    width: 45px;
    height: 45px;
    object-fit: cover;
    background: #d9d9d9;
    border-radius: 50%;
}

.card__role {
    color: var(--grey);
}

.contact {
    display: grid;
    grid-template-columns: minmax(0, 626px) minmax(0, 508px);
    justify-content: space-between;
    gap: 64px;
    padding-block: 80px 60px;
}

.contact__headline {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 32px;
}

.contact__image {
    width: 100%;
    height: 657px;
    object-fit: cover;
    background: var(--border-card);
    border-radius: var(--radius);
}

.form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 32px;
}

.form__field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form__field--full {
    grid-column: 1 / -1;
}

.form__control {
    width: 100%;
    padding: 12px 16px;
    font: inherit;
    color: var(--black);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-control);
    transition: border-color var(--ease), box-shadow var(--ease);
}

.form__control::placeholder {
    color: var(--grey);
}

.form__control:focus {
    border-color: var(--black);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, .08);
}

textarea.form__control {
    min-height: 123px;
    resize: vertical;
}

.form__submit {
    width: 100%;
}

.footer {
    margin-top: 60px;
    border-top: 1px solid var(--divider);
}

.footer__inner {
    display: flex;
    justify-content: space-between;
    gap: 32px;
    padding-block: 52px;
}

.footer__brand {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 32px;
}

.footer__logo {
    font-size: 24px;
    font-weight: 400;
}

.footer__columns {
    display: flex;
    gap: 32px;
}

.footer__column {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 24px;
    min-width: 187px;
    text-align: right;
}

.footer__link {
    color: var(--grey-dark);
    border-radius: 4px;
    transition: text-shadow var(--ease);
}

.footer__link:hover,
.footer__link:focus-visible {
    text-shadow: var(--shadow-link);
}

.socials {
    display: flex;
    gap: 8px;
}

.socials a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 4px;
    transition: background-color var(--ease), transform var(--ease);
}

.socials a:hover {
    background: var(--border-card);
    transform: translateY(-2px);
}

.socials svg {
    width: 24px;
    height: 24px;
    fill: var(--grey);
    transition: fill var(--ease);
}

.socials a:hover svg {
    fill: var(--black);
}

@media (max-width: 1024px) {
    :root {
        --padding: 40px;
    }

    .title {
        font-size: 48px;
    }

    .heading {
        font-size: 32px;
    }

    .subtitle {
        font-size: 20px;
    }

    .burger {
        display: flex;
    }

    .nav {
        position: fixed;
        inset: 164px 0 auto;
        z-index: 20;
        flex-direction: column;
        gap: 32px;
        padding: 16px 24px 48px;
        background: var(--white);
        border-bottom: 1px solid var(--divider);
        visibility: hidden;
        opacity: 0;
        transform: translateY(-16px);
        transition: transform var(--ease), opacity var(--ease), visibility var(--ease);
    }

    .nav.is-open {
        visibility: visible;
        opacity: 1;
        transform: translateY(0);
    }

    .nav__list {
        flex-direction: column;
        gap: 16px;
    }

    .contact {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact__image {
        height: 420px;
    }

    .cards {
        grid-template-columns: 1fr;
    }

    .footer__inner {
        flex-direction: column;
    }

    .footer__column {
        flex: 1;
        min-width: 0;
    }
}

@media (max-width: 640px) {
    :root {
        --padding: 20px;
    }

    .title {
        font-size: 36px;
    }

    .heading {
        font-size: 28px;
    }

    .subtitle {
        font-size: 18px;
    }

    .hero {
        padding: 48px 0 40px;
    }

    .hero__image {
        aspect-ratio: 3 / 2;
    }

    .header__inner {
        min-height: 96px;
    }

    .nav {
        inset-block-start: 96px;
    }

    .burger {
        width: 40px;
        height: 22px;
        gap: 4px;
    }

    .burger span {
        height: 4px;
    }

    .burger[aria-expanded='true'] span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .burger[aria-expanded='true'] span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .form {
        grid-template-columns: 1fr;
    }

    .footer__columns {
        flex-direction: column;
        gap: 32px;
    }

    .footer__column {
        align-items: flex-start;
        text-align: left;
    }
}