/* Layout: 照明の落ちたアリーナ。場面ごとに一筋のスポットライトが落ち、縦書きの一語とカードだけが浮かぶ */
:root {
  --night-deep: #070B1C;
  --night: #0D1433;
  --moon: #F4F1E6;
  --moon-sub: #AAB3D0;
  --moon-faint: #6F789E;
  --brass: #E4B34C;
  --brass-bright: #FFD36B;
  --brass-old: #9C7322;
  --ally: #2E7DD1;
  --enemy: #D6455B;
  --line: rgba(170, 179, 208, .16);

  --font-display: "Kaisei Opti", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;

  --card-w: clamp(54px, 9vw, 92px);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { background: var(--night-deep); }
body {
  margin: 0;
  background: var(--night-deep);
  color: var(--moon);
  font-family: var(--font-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, p, figure { margin: 0; }
img { display: block; max-width: 100%; height: auto; }

.band { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }

/* ---------- カード（ゲームと同じ SVG） ---------- */
.card {
  display: block;
  width: var(--card-w);
  aspect-ratio: 240 / 334;
  background: center / contain no-repeat;
  filter: drop-shadow(0 6px 10px rgba(0, 0, 0, .55));
}
.card.back { background-image: url("/images/cards/back.svg"); }
.card.c-5d { background-image: url("/images/cards/5d.svg"); }
.card.c-6c { background-image: url("/images/cards/6c.svg"); }
.card.c-9c { background-image: url("/images/cards/9c.svg"); }
.card.c-9s { background-image: url("/images/cards/9s.svg"); }
.card.c-ad { background-image: url("/images/cards/ad.svg"); }
.card.c-ah { background-image: url("/images/cards/ah.svg"); }
.card.c-as { background-image: url("/images/cards/as.svg"); }
.card.c-jd { background-image: url("/images/cards/jd.svg"); }
.card.c-jh { background-image: url("/images/cards/jh.svg"); }
.card.c-kc { background-image: url("/images/cards/kc.svg"); }
.card.c-kd { background-image: url("/images/cards/kd.svg"); }
.card.c-qc { background-image: url("/images/cards/qc.svg"); }
.card.c-qh { background-image: url("/images/cards/qh.svg"); }
.card.c-qs { background-image: url("/images/cards/qs.svg"); }
.card.c-ts { background-image: url("/images/cards/ts.svg"); }

/* ---------- ヒーロー ---------- */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: 48px 64px;
  text-align: center;
  background:
    radial-gradient(34% 62% at 50% -6%, rgba(255, 211, 107, .26), transparent 72%),
    linear-gradient(180deg, var(--night-deep) 0%, var(--night) 62%, var(--night-deep) 100%);
}
.hero::before {
  /* 天井から落ちる一本の光 */
  content: "";
  position: absolute; z-index: -1;
  left: 50%; top: 0;
  width: min(760px, 120vw); height: 100%;
  transform: translateX(-50%);
  background: conic-gradient(from 180deg at 50% -4%, transparent 165deg, rgba(255, 211, 107, .10) 175deg, rgba(255, 211, 107, .10) 185deg, transparent 195deg);
  pointer-events: none;
}
.hero-logo { width: min(440px, 80%); margin-inline: auto; }
.hero h1 {
  margin-top: 28px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 1rem + 3vw, 2.9rem);
  line-height: 1.4;
  letter-spacing: .04em;
  text-wrap: balance;
}
.hero h1 span { display: inline-block; }

.table {
  margin: 44px auto 0;
  width: min(760px, 100%);
  display: grid;
  gap: 18px;
  justify-items: center;
}
.side { display: flex; justify-content: center; gap: clamp(14px, 4vw, 40px); }
.pair { display: flex; gap: 4px; position: relative; padding-bottom: 12px; }
.pair::after {
  content: "";
  position: absolute; left: 8%; right: 8%; bottom: 0;
  height: 3px; border-radius: 3px;
  background: var(--ally);
  box-shadow: 0 0 14px var(--ally);
}
.pair .card:first-child { transform: rotate(-5deg); }
.pair .card:last-child { transform: rotate(5deg) translateY(2px); }
.enemy .pair::after { background: var(--enemy); box-shadow: 0 0 10px var(--enemy); }
.enemy { --card-w: clamp(38px, 6vw, 62px); opacity: .55; }

.status {
  display: inline-block;
  margin-top: 44px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: .9rem;
  color: var(--moon-sub);
  letter-spacing: .06em;
}

/* ---------- 場面 ---------- */
.scene {
  position: relative;
  isolation: isolate;
  padding-block: 88px;
}
.scene::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(40% 70% at var(--light-x, 30%) 0%, rgba(255, 211, 107, .09), transparent 70%);
}
.scene-inner {
  max-width: 1000px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(24px, 6vw, 72px);
  align-items: center;
}
.scene.flip { --light-x: 72%; }
.scene.flip .scene-inner { grid-template-columns: minmax(0, 1fr) auto; }
.scene.flip .word { order: 2; }

.word {
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 1.6rem + 4.6vw, 5.2rem);
  line-height: 1.1;
  letter-spacing: .12em;
  color: var(--moon);
  text-shadow: 0 0 40px rgba(255, 211, 107, .18);
}
.word em { font-style: normal; color: var(--brass-bright); }
/* 6 文字の一語は縦に長くなるので、PC の縦書きでだけ一段小さくする */
.word.long { font-size: clamp(2.2rem, 1.4rem + 3.4vw, 4rem); }
.line { text-wrap: balance; margin-top: 26px; color: var(--moon-sub); font-size: 1rem; text-align: center; }
.scene-visual { min-width: 0; }

/* ゲーム画面（ui_capture で撮ったチームバトルの画面）。端末の画面として枠に収める */
.screen {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(228, 179, 76, .45);
  box-shadow: 0 0 0 6px rgba(7, 11, 28, .85), 0 30px 80px rgba(0, 0, 0, .6), 0 0 120px rgba(255, 211, 107, .06);
}
.screen img { width: 100%; height: auto; }

.duo { display: flex; justify-content: center; align-items: flex-end; gap: clamp(28px, 7vw, 80px); --card-w: clamp(64px, 11vw, 104px); }
.duo .pair.folded { opacity: .35; transform: translateY(14px) rotate(-8deg); }
.duo .pair.lit { filter: drop-shadow(0 0 26px rgba(255, 211, 107, .25)); }

.trio { display: flex; justify-content: center; gap: clamp(16px, 4vw, 40px); --card-w: clamp(44px, 8vw, 80px); }
.trio .pair.out { opacity: .25; filter: grayscale(.7); }
.trio .pair.out::after { background: var(--moon-faint); box-shadow: none; }

/* ひとりで参加した自分の手に、まだ見ぬ味方 2 組が寄ってきて、1 本の青い線でチームになる */
.join {
  position: relative;
  display: flex; justify-content: center; align-items: flex-end;
  gap: clamp(14px, 4vw, 36px);
  padding-bottom: 14px;
  --card-w: clamp(46px, 8vw, 80px);
}
.join::after {
  content: "";
  position: absolute; left: 6%; right: 6%; bottom: 0;
  height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, transparent, var(--ally) 18%, var(--ally) 82%, transparent);
  box-shadow: 0 0 14px var(--ally);
}
.join .pair { padding-bottom: 0; }
.join .pair::after { display: none; }
.join .pair.arrive { opacity: .5; transform: translateY(-14px); }
.join .pair.me { filter: drop-shadow(0 0 22px rgba(255, 211, 107, .22)); }

/* ---------- 締め ---------- */
.finale {
  padding-block: 96px 80px;
  text-align: center;
  background:
    radial-gradient(40% 60% at 50% 100%, rgba(255, 211, 107, .14), transparent 70%),
    var(--night-deep);
}
.finale .big {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 1rem + 2.4vw, 2.4rem);
  letter-spacing: .08em;
  line-height: 1.6;
}
.finale .big span { display: inline-block; }
.finale .big .dot { color: var(--brass); margin-inline: .3em; }
/* お知らせの最新 1 件（配信時に差し込む）。日付と題名を 1 行で */
.finale .news-latest { margin: 28px auto 0; max-width: 34rem; font-size: .92rem; }
.finale .news-latest a { color: var(--moon); text-decoration: none; border-bottom: 1px solid var(--line); padding-bottom: 2px; }
.finale .news-latest a:hover { border-bottom-color: var(--brass); }
.finale .news-latest .date { color: var(--brass); font-variant-numeric: tabular-nums; margin-right: 12px; }
.finale .more { margin-top: 28px; font-size: .95rem; }
.finale .more a { color: var(--brass-bright); text-underline-offset: 4px; }
.finale .more a::after { content: " ›"; }
.finale .note { margin-top: 20px; font-size: .84rem; color: var(--moon-faint); }

footer {
  padding-block: 24px 32px;
  border-top: 1px solid var(--line);
  color: var(--moon-faint);
  font-size: .8rem;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 20px;
  max-width: 1000px; margin-inline: auto;
}
footer .legal { display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer .legal a { color: var(--moon-faint); text-underline-offset: 4px; }
footer .legal a:hover { color: var(--moon); }
footer .legal a:focus-visible { outline: 2px solid var(--brass-bright); outline-offset: 3px; border-radius: 4px; }

@media (prefers-reduced-motion: no-preference) {
  .hero::before { animation: sway 9s ease-in-out infinite alternate; }
  @keyframes sway { to { opacity: .55; } }
  .duo .pair.lit .card { transition: transform .3s ease; }
  .duo .pair.lit:hover .card:first-child { transform: rotate(-9deg) translateY(-6px); }
  .duo .pair.lit:hover .card:last-child { transform: rotate(9deg) translateY(-6px); }
}

@media (max-width: 640px) {
  .scene { padding-block: 64px; }
  /* 狭い画面では一語を横書きにして上に置き、絵を全幅で見せる */
  .scene-inner, .scene.flip .scene-inner { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .scene.flip .word { order: 0; text-align: right; }
  .word, .word.long { writing-mode: horizontal-tb; font-size: clamp(2.4rem, 12vw, 3.2rem); letter-spacing: .08em; }
  .line { font-size: .9rem; }
  .side, .trio, .join { gap: 10px; }
  .duo { gap: 22px; }
}

/* ---------- 404 ---------- */
.notfound { padding-block: 64px 96px; }
.notfound h1 { font-size: clamp(1.5rem, 1rem + 2.4vw, 2.4rem); }
.notfound .pair { width: max-content; margin: 44px auto 0; padding-bottom: 0; }
.notfound .pair::after { display: none; }
.notfound .sub { margin-top: 32px; color: var(--moon-sub); text-wrap: balance; }
.notfound .home { margin-top: 20px; }
.notfound .home a { color: var(--brass-bright); text-underline-offset: 4px; }