/*
  1. Use a more-intuitive box-sizing model.
*/
*,
*::before,
*::after {
    box-sizing: border-box;
}

/*
  2. Remove default margin
*/
* {
    margin: 0;
}

/*
  3. Allow percentage-based heights in the application
*/
html,
body {
    height: 100%;
}

/*
  Typographic tweaks!
  4. Add accessible line-height
  5. Improve text rendering
*/
body {
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;

    background: url(images/pattern-background-mobile.svg), #E1E9Ff;
    background-repeat: no-repeat, no-repeat;
    background-size: contain;
    background-color: var(--PALE-BLUE);
    display: flex;
    justify-content: center;
    align-items: center;

}

/*
  6. Improve media defaults
*/
img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

/*
  7. Remove built-in form typography styles
*/
input,
button,
textarea,
select {
    font: inherit;
}

/*
  8. Avoid text overflows
*/
p,
h1,
h2,
h3,
h4,
h5,
h6 {
    overflow-wrap: break-word;
}

/*
  9. Create a root stacking context
*/
#root,
#__next {
    isolation: isolate;
}

:root {
    --PALE-BLUE: hsl(225, 100%, 94%);
    --BRIGHT-BLUE: hsl(245, 75%, 52%);
    --VERY-PALE-BLUE: hsl(225, 100%, 98%);
    --DESATURATED-BLUE: hsl(224, 23%, 55%);
    --DARK-BLUE: hsl(223, 47%, 23%);

    --BORDER-RADIUS-SIZE: 16px;
    font-family: 'Red Hat Display', sans-serif;
    font-size: 16px;
}

.card-container {
    width: min(89%, 28rem);
    border-radius: var(--BORDER-RADIUS-SIZE);
    box-shadow: 0 12px 18px 1px hsla(224, 23%, 55%, 0.2);
}

.header-svg {
    border-top-left-radius: var(--BORDER-RADIUS-SIZE);
    border-top-right-radius: var(--BORDER-RADIUS-SIZE);
}

.card-main {
    background-color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem 1.5rem;
    border-bottom-left-radius: var(--BORDER-RADIUS-SIZE);
    border-bottom-right-radius: var(--BORDER-RADIUS-SIZE);
}

.card-main> :not(:first-child) {
    margin-block: 0.9rem;
}

h1 {
    font-size: 1.7rem;
    font-weight: 900;
    margin-block: 0.7rem 0.1rem;
    color: var(--DARK-BLUE)
}

.description {
    color: var(--DESATURATED-BLUE);
    padding-inline: 0.29rem;
}

.payment-plan {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1.5rem;
    background-color: var(--VERY-PALE-BLUE);
    border-radius: 0.7rem;
}

.left-side {
    display: flex;
}

.annual-plan-and-price {
    line-height: 1.5;
    margin-left: 1rem;
}

.plan {
    font-weight: 900;
    color: var(--DARK-BLUE);
}

.price {
    color: var(--DESATURATED-BLUE);
}

.change-payment,
.change-payment:visited {
    color: var(--BRIGHT-BLUE);
    font-size: 0.8rem;
    font-weight: 900;
}

.change-payment:hover,
.change-payment:focus {
    color: var(--DESATURATED-BLUE);
    text-decoration: none;
    cursor: pointer;
}

.payment-button {
    width: 100%;
    border-radius: 0.7rem;
    padding-block: 0.8rem;
    border: none;
    color: white;
    background-color: var(--BRIGHT-BLUE);
    box-shadow: 0 12px 18px 1px hsla(224, 23%, 55%, 0.45);
    font-size: 0.9rem;
}

.payment-button:hover,
.payment-button:focus {
    background-color: var(--DESATURATED-BLUE);
    cursor: pointer;
}

.cancel {
    text-decoration: none;
    color: var(--DESATURATED-BLUE);
    font-weight: 900;
}

.cancel:hover,
.cancel:focus {
    cursor: pointer;
    color: black;
}

@media screen and (min-width: 600px) {
    body {
        background: url(images/pattern-background-desktop.svg), #E1E9Ff;
        background-repeat: no-repeat, no-repeat;
        background-size: contain;
        background-color: var(--PALE-BLUE);
    }

    .card-main {
        padding: 2rem 2.5rem;
    }

    .payment-plan {
        padding-block: 1.1;
    }

    .payment-button {
        font-weight: 700;
        padding-block: 0.8rem;
    }
}