:root {
    --ff-sans: "Manrope", sans-serif;
    
    --fw-bold: 800;
    
    --fs-200: 0.75rem;  /* 12px SP title */
    --fs-300: 1rem;  /* 16px PC title */
    --fs-400: 1.5rem;  /* 24px SP quote */
    --fs-500: 1.75rem;  /* 28px PC quote */
    
    --clr-neutral-100: hsl(0, 0%, 100%);
    --clr-neutral-400: hsl(212, 45%, 89%);
    
    --clr-cyan: hsl(193, 38%, 86%);
    --clr-green: hsl(150, 100%, 66%);
    
    --clr-gray-blue: hsl(217, 19%, 38%);
    --clr-dark-gray-blue: hsl(217, 19%, 24%);
    --clr-dark-blue: hsl(218, 23%, 16%);
}

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

* {
    margin: 0;
    padding: 0;
}

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

html {
    background: var(--clr-dark-blue);
    font-family: var(--ff-sans);
}

main {
    margin-block: 7.5rem;
    margin-inline: auto;
    min-width: 375px;
    display: flex;
    justify-content: center;
}

.card-container{
    min-width: calc(375px - 2px);
    max-width: 540px;
    margin-inline: 1rem;
    border-radius: 10px;
    position: relative;
    background-color: var(--clr-dark-gray-blue);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-inline: 1.5rem;
    padding-block-start: 1.5rem;
}

.card-title {
    color: var(--clr-green);
    text-transform: uppercase;
    margin-block-start: 25px;
    font-size: var(--fs-200);
    letter-spacing: 4px;
}

.card-text {
    color: var(--clr-cyan);
    text-align: center;
    margin-block-start: 25px;
    font-size: var(--fs-400);
    letter-spacing: -0.5px;
    background: no-repeat bottom url(./images/pattern-divider-mobile.svg);
    padding-block-end: 40px;
}

.card-btn {
    color: var(--clr-dark-blue);
    background-color: var(--clr-green);
    border: none;
    padding: 20px;
    position: relative;
    border-radius: 50%;
    transform: translateY(50%);
}

.card-btn:hover,
.card-btn:active {
    box-shadow: 0 0 32px var(--clr-green);
}

@media (min-width: 736px) {
    main {
        margin-block: 14rem;
    }

    .card-container {
        min-width: 540px;
        padding-inline: 42px;
    }

    .card-title {
        margin-block-start: 30px;
        font-size: 13px;
        letter-spacing: 3.75px;
    }

    .card-text {
        margin-block-start: 26px;
        font-size: 27px;
        letter-spacing: 0.15px;
        line-height: 1.41;
        background: no-repeat bottom url(./images/pattern-divider-desktop.svg);
        padding-block-end: 55px;
        margin-block-end: 7px;
    }
}