:root {
  --akb-pink: #f57eb6;
  --textcolor: #000;
  --header-bgcolor: #fff;
  --header-textcolor: var(--akb-pink);
  --card-bgcolor: #fff;
  --card-titlecolor: #fff;
  --section-bordercolor: #fecdf5;
  --tx-blue: #0072bc;
  --akb-pink-active: #fdebf4;
  --menubutton-pink: #f367b0;
  --shadow: rgb(0 0 0 / 12%) 0 1px 3px, rgb(0 0 0 / 24%) 0 1px 2px;
  --details-bordercolor: var(--akb-pink);
  --note-color: #666;
  --disabled-color: #e6d6e3;
}

/*
  Josh's Custom CSS Reset
  https://www.joshwcomeau.com/css/custom-css-reset/
*/
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    interpolate-size: allow-keywords;
  }
}

body {
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

p {
  text-wrap: pretty;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  word-break: break-all;
  overflow-wrap: anywhere;
  line-break: strict;
  height: 100vh;
}

.container {
  max-width: 900px;
  margin-inline: auto;
}

header {
  background-color: var(--header-bgcolor);
  height: 100px;
  box-shadow: 0 5px 5px rgb(0 0 0 / 10%), 0 2px 3px -2px rgba(0 0 0 / 10%);
}

.header__title {
  display: flex;
  gap: clamp(0.5rem, 2vw, 1.5rem);
  align-items: center;
  justify-content: center;
  padding-top: 1rem;
}

.header__logo {
  flex: 0 1 200px;
  flex-basis: 100px;
  min-width: 100px;
}

.header__message {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-top: 10px;
  color: var(--akb-pink);
}

.header__messageTitle {
  font-size: clamp(1rem, 4vw, 1.5rem);
  line-height: 1.1;
  font-weight: bold;
  color: var(--header-textcolor);
}

main {
  padding: 1.5rem;
  background-image: url("../img/bg.jpeg");
  background-repeat: repeat;
  background-size: 75%;
  height: calc(100vh - 140px);
  overflow-y: scroll;
}

button {
  cursor: pointer;
}

footer {
  padding: 0.5rem 1.5rem 1.5rem;
  height: 40px;

  .card {
    border-color: var(--tx-blue);
  }

  .card__header {
    background-color: var(--tx-blue);
  }
}

.copyright {
  text-align: center;
}

.display-none {
  display: none;
}

#questions {
  .qa-7 {
    width: 100%;
    margin-bottom: 10px;
    border: none;
    border-radius: 25px;
    box-shadow: 0 10px 10px rgb(0 0 0 / 20%), 0 2px 3px -2px rgba(0 0 0 / 20%);
    background-color: #fefefe;
  }

  .qa-7 summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    padding: 1em 2em 1em 3em;
    color: #333333;
    font-weight: 600;
    cursor: pointer;
  }

  .qa-7 summary::before,
  .qa-7 p::before {
    position: absolute;
    left: 1em;
    font-weight: 600;
    font-size: 1.3em;
  }

  .qa-7 summary::before {
    color: #75bbff;
    content: "Q";
  }

  .qa-7 summary::after {
    transform: translateY(-25%) rotate(45deg);
    width: 7px;
    height: 7px;
    margin-left: 10px;
    border-bottom: 3px solid #333333b3;
    border-right: 3px solid #333333b3;
    content: "";
    transition: transform 0.5s;
  }

  .qa-7[open] summary::after {
    transform: rotate(225deg);
  }

  .qa-7 p {
    position: relative;
    transform: translateY(-10px);
    opacity: 0;
    margin: 0;
    padding: 0.3em 3em 1.5em;
    color: #333;
    transition: transform 0.5s, opacity 0.5s;
  }

  .qa-7[open] p {
    transform: none;
    opacity: 1;
  }

  .qa-7 p::before {
    color: #ff8d8d;
    line-height: 1.2;
    content: "A";
  }
}

.card {
  background-color: var(--card-bgcolor);
  border: 3px solid var(--akb-pink);
  border-radius: 0.75rem;
}

.card__header {
  padding-block: 0.2rem;
  font-size: larger;
  color: var(--card-titlecolor);
  text-align: center;
  background-color: var(--akb-pink);
}

.card__body {
  padding: 1rem;

  &.--center {
    text-align: center;

    img {
      max-width: 100%;
      margin-inline: auto;
    }
  }
}

.backBtn {
  position: relative;
  padding: 0.3rem 0.5rem;
  color: var(--card-titlecolor);
  text-align: center;
  background-color: var(--akb-pink);
  border: 2px solid var(--akb-pink);
  border-radius: 0.3rem;
  box-shadow: var(--shadow);
  text-decoration: none;
}

.contactBtn {
  position: fixed;
  padding: 5px;
  width: 60px;
  height: 60px;
  background-color: var(--akb-pink);
  border-radius: 50%;
  border: none;
  z-index: 99999;
  bottom: 50px;
  right: 20px;
  box-shadow: 2px 2px 4px gray;
}