/*
 * link.giving-jp.com
 * 色はこのブロックで変更できます。完全なモノクロにする場合は
 * --accent を #ffffff、--accent-ink を #181818 に変更してください。
 */
:root {
  --page: #f3f3f0;
  --surface: #fdfdfb;
  --ink: #20211f;
  --line: #ddded7;
  --dark: #20211f;
  --accent: #d5fa63;
  --accent-ink: #20211f;
  --radius: 18px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, "Noto Sans CJK JP", sans-serif;
  color: var(--ink);
  background: var(--page);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
}

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

html { min-inline-size: 280px; }
body { margin: 0; }

::selection { color: var(--accent-ink); background: var(--accent); }

.svg-library { position: absolute; inline-size: 0; block-size: 0; overflow: hidden; }

.page {
  min-block-size: 100vh;
  min-block-size: 100svh;
  display: grid;
  place-items: center;
  padding: max(44px, env(safe-area-inset-top)) max(26px, env(safe-area-inset-right)) max(44px, env(safe-area-inset-bottom)) max(26px, env(safe-area-inset-left));
  isolation: isolate;
}

/* 目立たない紙のような質感。画像のダウンロードは発生しません。 */
.page::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.83' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23000' filter='url(%23n)' opacity='.6' d='M0 0h180v180H0z'/%3E%3C/svg%3E");
}

.links { inline-size: min(100%, 660px); }
.link-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 13px; }

.link-item {
  min-inline-size: 0;
  animation: arrive 800ms var(--ease) backwards;
}
.link-item:nth-child(2) { animation-delay: 75ms; }
.link-item:nth-child(3) { animation-delay: 150ms; }
.link-item:nth-child(4) { animation-delay: 225ms; }

.link-card {
  --rotate-x: 0deg;
  --rotate-y: 0deg;
  --lift: 0px;
  --glow-x: 50%;
  --glow-y: 50%;
  --arrow-x: 0px;
  --arrow-y: 0px;
  position: relative;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 42px;
  gap: 24px;
  align-items: center;
  min-block-size: 112px;
  padding: 24px 27px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: var(--surface);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  isolation: isolate;
  transform: perspective(1000px) translateY(var(--lift)) rotateX(var(--rotate-x)) rotateY(var(--rotate-y));
  box-shadow: 0 2px 2px rgb(22 25 16 / .015), 0 10px 28px -22px rgb(22 25 16 / .12);
  transition: transform 500ms var(--ease), background-color 280ms ease, border-color 280ms ease, box-shadow 450ms var(--ease);
}

/* カードの内側だけに光を落とします。文字やカーソルは隠しません。 */
.link-card::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(280px circle at var(--glow-x) var(--glow-y), rgb(213 250 99 / .09), transparent 75%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 400ms ease;
}

.link-icon,
.link-arrow { display: grid; place-items: center; flex-shrink: 0; }
.link-icon { inline-size: 42px; block-size: 42px; }
.link-icon svg { inline-size: 38px; block-size: 38px; }
.link-icon--spark svg,
.link-icon--asterisk svg { transition: transform 650ms var(--ease); }

.link-label { min-inline-size: 0; position: relative; }
.link-label--social { font-size: 30px; font-weight: 550; letter-spacing: -.055em; line-height: 1.2; }
.link-label--japanese { font-size: 17px; font-weight: 600; letter-spacing: .025em; line-height: 1.85; }
.phrase { display: inline-block; }

.link-arrow {
  inline-size: 42px;
  block-size: 42px;
  border: 1px solid #e1e2db;
  border-radius: 50%;
  background: transparent;
  transform: translate(var(--arrow-x), var(--arrow-y));
  transition: transform 450ms var(--ease), background-color 250ms ease, border-color 250ms ease;
}
.link-arrow svg { inline-size: 19px; block-size: 19px; transition: transform 450ms var(--ease); }


.link-card:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 5px;
}
.link-card:focus-visible::before { opacity: 1; }
.link-card:focus-visible .link-arrow { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); }

@media (hover: hover) and (pointer: fine) {
  .link-card:hover {
    --lift: -3px;
    border-color: #bfc2b5;
    background-color: #fff;
    box-shadow: 0 14px 34px -21px rgb(22 25 16 / .25);
  }
  .link-card:hover::before { opacity: 1; }
  .link-card:hover .link-arrow { background: var(--accent); border-color: var(--accent); }
  .link-card:hover .link-arrow svg { transform: translate(1px, -1px); }
  .link-card:hover .link-icon--spark svg { transform: rotate(18deg); }
  .link-card:hover .link-icon--asterisk svg { transform: rotate(45deg); }
}

.link-card:active {
  --lift: 0px;
  transform: perspective(1000px) scale(.99);
  transition-duration: 100ms;
}

.visually-hidden {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

@keyframes arrive {
  from { opacity: 0; transform: translate3d(0, 18px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

@media (max-width: 600px) {
  .page { padding-inline: max(22px, env(safe-area-inset-left)) max(22px, env(safe-area-inset-right)); }
  .links { inline-size: min(100%, 430px); }
  .link-list { gap: 11px; }
  .link-card { grid-template-columns: 33px minmax(0, 1fr) 33px; column-gap: 15px; padding: 23px 19px; min-block-size: 97px; border-radius: 16px; }
  .link-icon { inline-size: 33px; block-size: 36px; }
  .link-icon svg { inline-size: 33px; block-size: 33px; }
  .link-label--social { font-size: 27px; }
  .link-label--japanese { font-size: 14px; line-height: 1.9; letter-spacing: .015em; }
  .link-arrow { inline-size: 33px; block-size: 33px; }
  .link-arrow svg { inline-size: 16px; block-size: 16px; }
  .link-card--prompt { min-block-size: 110px; }
}

@media (max-width: 374px) {
  .page { padding-inline: max(16px, env(safe-area-inset-left)) max(16px, env(safe-area-inset-right)); }
  .link-card { grid-template-columns: 29px minmax(0, 1fr) 29px; column-gap: 11px; padding-inline: 15px; }
  .link-icon, .link-icon svg { inline-size: 29px; }
  .link-arrow { inline-size: 29px; block-size: 29px; }
  .link-label--japanese { font-size: 13px; letter-spacing: 0; }
  .giving-english { font-size: 14px; }
  .giving-japanese { font-size: 12px; }
}

/* OSの「視差効果を減らす」等の設定に合わせ、動きをなくします。 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .link-card, .link-card:active, .link-arrow, .link-arrow svg,
  .link-icon--spark svg, .link-icon--asterisk svg { transform: none !important; }
}

@media (forced-colors: active) {
  .link-card, .link-card--dark { border: 1px solid LinkText; }
  .link-arrow { border-color: LinkText; }
  .page::before, .link-card::before { display: none; }
}