@import url('./tokens.css');

* { box-sizing: border-box; }
html { scroll-padding-top: var(--space-6); }
body { margin: 0; background: var(--gg-paper); color: var(--gg-ink); font-family: var(--font-sans); font-size: var(--type-body); line-height: var(--leading-body); -webkit-text-size-adjust: 100%; }
h1, h2, h3, p, figure { margin: 0; }
figure, section { min-width: 0; }
a { color: inherit; text-underline-offset: 5px; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
::selection { background: var(--gg-pink); color: var(--gg-ink); }
:focus-visible { outline: 3px solid var(--gg-teal); outline-offset: 5px; }
.page-width { width: min(var(--content-width), calc(100% - var(--page-gutter) * 2)); margin-inline: auto; }
.serif { font-family: var(--font-serif); font-style: italic; font-weight: 400; }
.skip-link { position: absolute; top: 8px; left: 16px; z-index: 10; padding: var(--space-3) var(--space-6); background: var(--gg-ink); color: var(--gg-white); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
h1 { font-size: var(--type-page); line-height: var(--leading-title); font-weight: 900; letter-spacing: var(--tracking-title); margin-block: var(--heading-gap); }
.category { color: var(--gg-teal); font-size: var(--type-meta); font-weight: 700; letter-spacing: var(--tracking-label); line-height: 1.6; }

/* Shared shell: every portal page uses the same header, navigation and footer. */
.site-header { border-top: 8px solid var(--gg-teal); }
.masthead { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--content-gap); padding-block: var(--header-space); }
.wordmark { font-size: var(--type-logo); font-weight: 900; letter-spacing: -.065em; line-height: .95; text-decoration: none; color: var(--gg-teal); }
.wordmark span { display: block; }
.tagline { font-size: var(--type-tagline); font-weight: 800; letter-spacing: var(--tracking-title); line-height: 1.3; }
.tagline span { color: var(--gg-teal); }
.navigation { display: flex; justify-content: center; gap: var(--space-12); border-top: var(--border-default); border-bottom: var(--border-emphasis); }
.navigation a { position: relative; display: flex; align-items: center; min-height: 48px; font-size: var(--type-nav); font-weight: 700; text-decoration: none; letter-spacing: var(--tracking-label); }
.navigation a::after { content: ''; position: absolute; left: 0; right: 0; top: calc(50% + .7em + 4px); height: 2px; background: var(--gg-teal); transform: scaleX(0); transform-origin: right center; transition: transform var(--motion-ui) ease; }
.navigation a:focus-visible::after { transform: scaleX(1); transform-origin: left center; }
.site-footer { background: var(--gg-teal); color: var(--gg-white); padding-block: var(--footer-space); }
.footer-inner { display: flex; justify-content: space-between; gap: var(--content-gap); }
.footer-brand { font-size: var(--type-footer-brand); font-weight: 800; line-height: 1.5; letter-spacing: var(--tracking-heading); }
.footer-brand span { display: block; margin-top: var(--space-2); font-size: var(--type-small); letter-spacing: 0; }
.footer-meta { display: flex; align-items: flex-end; font-size: var(--type-small); }
.footer-meta a { min-height: 44px; display: inline-flex; align-items: center; gap: var(--space-4); }
.back-to-top { position: relative; color: var(--gg-white); text-decoration: none; letter-spacing: var(--tracking-label); }
.back-to-top::before, .back-to-top::after { content: ''; position: absolute; left: 0; right: 0; bottom: 6px; height: 1px; pointer-events: none; }
.back-to-top::before { background: var(--gg-ink); }
.back-to-top::after { background: var(--gg-white); transform: scaleX(0); transform-origin: right center; transition: transform var(--motion-ui) ease; }
.back-to-top__arrow { display: inline-block; transition: transform 180ms ease; }
.back-to-top:focus-visible::after { transform: scaleX(1); transform-origin: left center; }
.back-to-top:focus-visible .back-to-top__arrow { transform: translateY(-4px); }
.back-to-top.is-launching .back-to-top__arrow { visibility: hidden; }
.back-to-top__flight { position: fixed; z-index: 20; pointer-events: none; animation: back-to-top-launch 750ms both; }
@keyframes back-to-top-launch {
  0% { transform: translateY(0) scale(1); opacity: 1; animation-timing-function: ease-out; }
  16% { transform: translateY(4px) scale(1); opacity: 1; animation-timing-function: cubic-bezier(.65, 0, .9, .35); }
  92%, 100% { transform: translateY(-160px) scale(.65); opacity: 0; }
}
.site-footer :focus-visible { outline-color: var(--gg-white); }
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-6); margin-top: var(--space-6); padding-top: var(--space-2); border-top: 1px solid currentColor; }
.footer-links a { display: inline-flex; align-items: center; min-height: 44px; font-size: var(--type-nav); font-weight: 700; letter-spacing: var(--tracking-label); }
.footer-links a[aria-current='page'] { text-decoration-thickness: 2px; }

/* Section headings share one hierarchy, including their Japanese subtitle. */
.section-label, .detail-section-label { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-3) var(--space-6); font-size: var(--type-section); font-weight: 800; letter-spacing: var(--tracking-heading); line-height: 1.3; }
.detail-section-label { border-top: var(--border-default); padding-top: var(--rule-gap); }
.detail-section-label > span { font-size: var(--type-section-note); font-weight: 400; letter-spacing: 0; }
.section-label { justify-content: space-between; }
.section-label-main { display: flex; align-items: baseline; gap: var(--space-3); min-width: 0; }
.section-label-main > b { font-size: var(--type-number); color: var(--gg-teal); letter-spacing: 0; }

/* Top page: preserve the twelve-column composition and the two existing images. */
.feature { padding-top: var(--page-space); }
.feature-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--content-gap); margin-top: var(--heading-gap); }
.feature-copy { grid-column: 1 / 5; grid-row: 1; padding-top: var(--space-4); }
.feature-copy h1 span { display: block; }
.game-description { font-size: var(--type-body); font-weight: 700; }
.feature-visual { grid-column: 5 / 13; grid-row: 1 / 3; }
.feature-visual .game-image, .secondary-game .game-image { display: block; width: 100%; height: auto; }
.game-status { padding-top: var(--space-2); font-size: var(--type-meta); line-height: 1.6; }
.feature-action { grid-column: 1 / 5; grid-row: 2; align-self: end; padding-bottom: var(--space-6); }
.game-start { display: inline-flex; justify-content: space-between; align-items: center; gap: var(--space-6); width: min(100%, 280px); max-width: 100%; min-height: 76px; border: var(--border-default); border-radius: 0; padding: var(--space-3) var(--space-6); background: var(--gg-pink); color: var(--gg-ink); font-family: var(--font-sans); font-weight: 800; text-decoration: none; }
.game-start__copy { display: grid; gap: var(--space-1); min-width: 0; text-align: left; }
.game-start__prompt { font-size: var(--type-meta); line-height: 1.2; font-weight: 700; letter-spacing: var(--tracking-label); }
.game-start__label { color: var(--gg-white); font-size: var(--type-play); line-height: 1.1; letter-spacing: var(--tracking-label); }
.game-start__icon { display: block; flex-shrink: 0; font-size: var(--type-subheading); line-height: 1; transition: transform 180ms ease; }
.game-start:focus-visible { outline: 3px solid var(--gg-ink); outline-offset: 5px; }
.game-start:focus-visible .game-start__icon { transform: translateX(3px); }
.game-details-link { display: inline-flex; align-items: center; min-height: 44px; margin-top: var(--space-2); font-size: var(--type-small); letter-spacing: var(--tracking-label); }
.action-caption { font-size: var(--type-small); margin-top: var(--space-3); }
.secondary-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--content-gap); margin-block: var(--section-space); }
.secondary-game { grid-column: 1 / 8; border-top: var(--border-default); padding-top: var(--rule-gap); }
.secondary-heading { margin-block: var(--heading-gap); }
.secondary-heading h2 { font-size: var(--type-catch); line-height: var(--leading-heading); letter-spacing: var(--tracking-heading); margin-top: var(--space-2); }
.alternate-title { display: inline-block; font-size: var(--type-subheading); letter-spacing: 0; }
.from-section { grid-column: 9 / 13; border-top: var(--border-default); padding-top: var(--rule-gap); }
.from-section h2 { font-size: var(--type-catch); line-height: var(--leading-heading); letter-spacing: var(--tracking-heading); margin-top: var(--heading-gap); }
.from-description { margin-top: var(--copy-gap); font-size: var(--type-body); }
.future-topics { list-style: none; margin: var(--space-6) 0 0; padding: 0; }
#from .future-topics li { border-top: var(--border-default); font-size: var(--type-body); }
#from .future-topics li:last-child { border-bottom: var(--border-default); }
#from .future-topics .serif { font-size: var(--type-small); }
#from .topic-row { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); width: 100%; min-height: 64px; padding: var(--space-4) var(--space-5); background: var(--gg-paper); color: var(--gg-ink); text-decoration: none; }
#from a.topic-row { transition: background-color 180ms ease, color 180ms ease; }
#from a.topic-row:focus-visible { background: var(--gg-teal); color: var(--gg-white); outline: 3px solid var(--gg-ink); outline-offset: 3px; }
@media (hover: hover) {
  #from a.topic-row:hover { background: var(--gg-teal); color: var(--gg-white); }
}

/* Long-form information pages use the reading-title variant of the page scale. */
.info-page { max-width: 900px; margin-block: var(--page-space) var(--section-space); }
.info-page h1 { font-size: var(--type-reading-title); line-height: var(--leading-heading); margin-block: var(--space-3) var(--heading-gap); overflow-wrap: anywhere; }
.info-page p { max-width: var(--measure-body); font-size: var(--type-body); overflow-wrap: anywhere; }
.info-page p + p { margin-top: var(--copy-gap); }
.info-page section { margin-top: var(--space-10); padding-top: var(--rule-gap); border-top: var(--border-default); }
.info-page h2 { font-size: var(--type-section); line-height: var(--leading-heading); margin-bottom: var(--heading-gap); letter-spacing: var(--tracking-heading); }
.info-page .category { font-size: var(--type-meta); }
.info-page a { color: var(--gg-teal); }
.info-page .contact-link { display: inline-flex; align-items: center; min-height: 44px; }
.info-page .policy-signature { margin-top: var(--space-10); }

@media (hover: hover) and (pointer: fine) {
  .back-to-top:hover::after { transform: scaleX(1); transform-origin: left center; }
  .back-to-top:hover .back-to-top__arrow { transform: translateY(-4px); }
  .navigation a:hover::after { transform: scaleX(1); transform-origin: left center; }
  .future-topics li > a:hover, .game-details-link:hover { color: var(--gg-teal); }
  .wordmark:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px; }
  .game-start:hover .game-start__icon { transform: translateX(3px); }
}
@media (max-width: 760px) {
  .site-header { border-top-width: 4px; }
  .masthead { align-items: center; }
  .tagline { writing-mode: vertical-rl; letter-spacing: .04em; white-space: nowrap; }
  .navigation { gap: var(--space-8); }
  .feature-grid, .secondary-grid { grid-template-columns: minmax(0, 1fr); }
  .feature-copy { grid-column: 1; grid-row: 1; padding-top: 0; }
  .feature-copy h1 span { display: inline; }
  .feature-visual { grid-column: 1; grid-row: 2; }
  .feature-action { grid-column: 1; grid-row: 3; padding-bottom: 0; }
  .play-button { width: 100%; }
  .secondary-grid { gap: var(--section-space); }
  .secondary-game, .from-section { grid-column: 1; }
  .footer-inner { flex-direction: column; }
  .footer-meta { align-items: stretch; }
  .info-page section { margin-top: var(--space-8); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .game-start .game-start__icon { transform: none !important; }
  .back-to-top .back-to-top__arrow { transform: none !important; }
}