:root {
  --primary-pale: hsl(225, 100%, 94%);
  --primary-bright: hsl(245, 75%, 52%);

  --neutral-pale: hsl(225, 100%, 98%);
  --neutral-desaturated: hsl(224, 23%, 55%);
  --neutral-dark: hsl(223, 47%, 23%);

  --font-main: "Red Hat Display", sans-serif;
}

html {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  background: url("images/pattern-background-desktop.svg");
  background-repeat: no-repeat;
  background-size: contain;
  background-position: top center;
  background-color: var(--primary-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 900;
}

img {
  max-width: 100%;
}

.card {
  width: 25rem;
  background-color: #ffffff;
  border-radius: 1.5rem;
  overflow: hidden;
  box-shadow: 0 1rem 2rem
    color-mix(in srgb, var(--neutral-desaturated), transparent 80%);
}

.card__body {
  padding: 2rem;

  .card__title {
    margin: 0;
    font-size: 1.75em;
    color: var(--neutral-dark);
    text-align: center;
  }

  .card__description {
    color: var(--neutral-desaturated);
    text-align: center;
  }
}

.card__plan {
  background-color: var(--neutral-pale);
  height: 5rem;
  padding: 1rem;
  border-radius: 1rem;
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.card__plan-desc {
  flex: 1;
  .plan-desc__title {
    margin: 0 0 0.25rem;
    font-weight: 900;
    color: var(--neutral-dark);
  }

  .plan-desc__price {
    margin: 0;
    color: var(--neutral-desaturated);
  }
}

.btn {
  background-color: transparent;
  outline: none;
  border: none;
  cursor: pointer;
  transition: 0.25s ease-in-out all;

  &.btn--link {
    text-decoration: underline;
    color: var(--primary-bright);
    font-weight: 800;
    font-size: 0.85em;

    &:hover {
      color: color-mix(in hsl, var(--primary-bright), white 10%);
    }
  }

  &.btn--primary,
  &.btn--subtle {
    width: 100%;
    padding: 1rem;
    font-size: 0.9em;
    border-radius: 0.75rem;
    font-weight: 900;
  }

  &.btn--primary {
    background-color: var(--primary-bright);
    color: #ffffff;
    box-shadow: 0 0.5rem 1rem
      color-mix(in hsl, var(--primary-bright), transparent 70%);
    margin-bottom: 1rem;

    &:hover {
      background-color: color-mix(in hsl, var(--primary-bright), white 10%);
      box-shadow: 0 0.25rem 0.75rem
        color-mix(in hsl, var(--primary-bright), transparent 50%);
    }
  }

  &.btn--subtle {
    color: var(--neutral-desaturated);
    &:hover {
      color: var(--neutral-dark);
      background-color: var(--neutral-pale);
    }
  }

  &:active {
    transform: scale(0.95);
  }
}