:root {

    --strong-cyan: hsl(171, 66%, 44%);
    --light-blue: hsl(233, 100%, 69%);
    --dark-grayish-blue: hsl(210, 10%, 33%);
    --grayish-blue: hsl(201, 11%, 66%);

    --padding-container: 80px 0;
}

* {
    margin: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Bai Jamjuree', sans-serif;
}

.container {
    max-width: 1200px;
    width: 90%;
    margin: 0 auto;
    overflow: hidden;
    padding: var(--padding-container);
}

.hero {
    --padding-container: 120px 0 80px;
    background-image: url('../images/bg-header-mobile.png');
    background-repeat: no-repeat;
    background-size: 100%;
    text-align: center;
}

.hero__img {
    display: block;
    margin: 0 auto;
    margin-bottom: 4.5em;
}

.hero__title {
    color: var(--dark-grayish-blue);
    margin-bottom: 1rem;
}

.hero__paragraph {
    color: var(--grayish-blue);
    line-height: 1.5;
}

/* track */

.track__texts {
    text-align: center;
}

.title {
    color: var(--dark-grayish-blue);
    font-size: 2rem;
    height: 100px;
}

.paragraph {
    line-height: 1.5;
    color: var(--grayish-blue);
    margin-top: 1.5em;
}

.track__img {
    width: 100%;
    display: block;
    max-width: 400px;
    margin: 0 auto;
    margin-top: 3.5em;
}

.track__articles {
    display: flex;
    flex-direction: column;
    gap: 3.5em;
    margin-top: 2.5em;
    text-align: center;
}

.track__offer {
    color: var(--dark-grayish-blue);
    font-size: 1.5rem;
}

.track__copy {
    margin-top: .7em;
    line-height: 1.5;
    color: var(--grayish-blue);
}

/* clipboard */

.clipboard {
    text-align: center;
}

.clipboard__picture {
    margin: 3em 0 6em;
}

.clipboard__img {
    display: block;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.clipboard__offer {
    margin-top: 4em;
    display: flex;
    flex-direction: column;
    gap: 3.5em;
}

.clipboard__icon {
    display: block;
    width: 45px;
    margin: 0 auto;
    margin-bottom: 1.5em;
}

.clipboard__title {
    font-size: 1.5rem;
    color: var(--dark-grayish-blue);
}

.clipboard__paragraph {
    color: var(--grayish-blue);
    line-height: 1.5;
    margin-top: 1em;
}

/* brands */

.brands {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4.5em;
}

.action {
    text-align: center;
}

/* footer */

.footer {
    background-color: #f2f2f2;
    text-align: center;
}

.footer__img {
    display: block;
    width: 100px;
    margin: 0 auto;
}

.footer__links {
    margin: 4em 0;
    display: flex;
    flex-direction: column;
    gap: 1.5em;
    align-items: center;
}

.footer__link {
    text-decoration: none;
    color: var(--dark-grayish-blue);
}

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

.footer__social {
    display: flex;
    gap: 3em;
    justify-content: center;
}

.footer__media {
    text-decoration: none;
}

.footer__icon {
    display: block;
}

@media (min-width:768px) {

    .hero {
        --padding-container: 120px 0 90px;
        background-image: url('../images/bg-header-desktop.png');
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .buttons {
        margin-top: 3em;
        flex-direction: row;
        justify-content: center;
    }

    .buttons__cta {
        padding: 1em 3em;
    }

    .buttons__cta--blue {
        box-shadow: 0 0 10px -5px var(--light-blue);
        background-color: var(--light-blue);
    }

    /* track */

    .title {
        font-size: 2.5rem;
    }


    .track {
        --padding-container: 80px 0 0;
        display: flex;
        width: 100%;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .track__texts {
        width: 90%;
        margin: 0 auto;
        margin-bottom: 1.5em;
    }

    .track__picture {
        position: relative;
        width: 50%;
        overflow: hidden;
        height: 500px;
    }


    .track__img {
        width: 125%;
        max-width: 650px;

        position: absolute;
        right: 0;
        top: 0;
        bottom: 0;
        margin: auto 0;
    }

    .track__articles {
        width: 42%;
        gap: 3em;
        margin: 0 auto;
        text-align: left;
        align-self: center;
    }

    .track__offer {
        color: var(--dark-grayish-blue);
        font-size: 1.5rem;
    }

    .track__copy {
        margin-top: .7em;
        line-height: 1.5;
        color: var(--grayish-blue);
    }


    /* clipboard */

    .clipboard {
        --padding-container: 20px 0 80px;
    }

    .clipboard__img {
        max-width: 700px;
    }

    .clipboard__offer {
        flex-direction: row;
        gap: 2em;
        justify-content: space-between;
        align-items: baseline;
    }

    .clipboard__item {
        flex: 1;
        /* grow:1 shrink:1 basis:0 */
    }

    /* brands */

    .brands {
        flex-direction: row;
        justify-content: space-between;
        gap: 2em;
    }

    .brands__item {
        min-width: 100px;
        max-width: 130px;
        flex: 1;
    }


    .footer__container {
       display: flex;
       gap: 2em;
       align-items: center;
    }

    .footer__img {
       width: 70px;
    }

    .footer__links {
        margin: 0;
       
        flex-direction: row;
        gap: 1em;
        align-items: center;
        flex-wrap: wrap;
    }

    .footer__link {
        width: 28%;
    }

   
    .footer__social {
        margin-left: auto;
    }

    

}