/* assets/css/style.css */
:root{
  /* heavy corporate (metal) */
  --bg:#0b0f14;        /* 背景（黒寄りネイビー） */
  --panel:#0f1620;     /* パネル */
  --panel2:#121c28;    /* 段差用 */
  --fg:#e7edf5;        /* 文字（白すぎない） */
  --muted:#a7b3c2;     /* サブ文字 */
  --line:#223041;      /* 罫線 */
  --accent:#c7a24a;    /* メタルゴールド（控えめ） */

  --container:1200px;
  --gutter:20px;

  --radius:12px;
  --shadow:0 18px 40px rgba(0,0,0,.35);

  --h-header:84px;
}


body{
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--fg);
  background: var(--bg);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible{
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

/* layout utilities */
.u-container{
  width: min(var(--container), calc(100% - (var(--gutter) * 2)));
  margin-inline: auto;
}
.u-section{ padding: 72px 0; }
.u-stack{ display: grid; gap: 16px; }
.u-grid{ display:grid; gap: 20px; }
.u-grid--2{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.u-grid--3{ grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* page head */
.u-pagehead{
  padding: 38px 0;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.u-eyebrow{
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
  text-transform: uppercase;
}
.u-title{
  font-size: clamp(22px, 2.3vw, 34px);
  line-height: 1.2;
}
.u-lead{
  color: var(--muted);
  max-width: 75ch;
}

/* components */
.c-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}
.c-card__title{
  font-size: 25px;
  line-height: 1.35;
  margin-bottom: 8px;
}
.c-card__meta{
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
}

.c-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 12px 16px;
  border-radius: 999px;
  border:1px solid var(--fg);
  background: var(--fg);
  color:#fff;
  gap: 10px;
  font-size: 14px;
  line-height: 1;
}
.c-btn--ghost{
  background: transparent;
  color: var(--fg);
}
.c-btn__arrow{
  display:inline-block;
  transform: translateY(-1px);
}

.c-hr{
  border: 0;
  border-top: 1px solid var(--line);
  margin: 24px 0;
}

.c-kv{
  padding: 46px 0;
  background: linear-gradient(180deg, #fafafa 0%, #ffffff 60%);
  border-bottom: 1px solid var(--line);
}
.c-kv__inner{
  display:grid;
  gap: 18px;
  align-items: center;
}
.c-kv__title{
  font-size: clamp(26px, 3vw, 44px);
  line-height: 1.1;
}
.c-kv__text{
  color: var(--muted);
  max-width: 70ch;
}
.c-kv__cta{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* list (news / achievements list) */
.c-list{
  display:grid;
  gap: 10px;
}
.c-list__item a{
  display:grid;
  grid-template-columns: 120px 1fr;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:#fff;
  transition: transform .15s ease;
}
.c-list__item a:hover{ transform: translateY(-1px); }
.c-list__date{
  font-size: 13px;
  color: var(--muted);
}
.c-list__title{
  line-height: 1.4;
}

/* placeholder media box (for no images yet) */
.c-media{
  border:1px dashed var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.03);
  padding: 16px;
  aspect-ratio: 16 / 9;
  width: 100%;
  display:grid;
  place-items:center;
  color: var(--muted);
}
/* カード内c-mediaはmin-heightをリセットし比率で揃える */
.c-card .c-media{
  aspect-ratio: 16 / 9;
  min-height: unset;
}
/* 代表写真は縦長 */
.c-message__photo .c-media{
  aspect-ratio: 3 / 4;
  min-height: unset;
}

/* header */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header__bar{
  height: var(--h-header);
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 18px;
}
.site-brand{
  display:flex;
  align-items:center;
  gap: 12px;
  min-width: 220px;
}
.site-brand__logo{
  width: 46px;
  height: 46px;
  border-radius: 10px;
  border: 1px solid var(--line);
  display:grid;
  place-items:center;
  font-size: 12px;
  color: var(--muted);
  background:#fff;
}
.site-brand__name{
  display:grid;
  gap: 2px;
  line-height: 1.1;
}
.site-brand__name strong{ font-size: 15px; }
.site-brand__name span{ font-size: 12px; color: var(--muted); letter-spacing: .06em; }

.gnav{
  display:flex;
  align-items:center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.gnav a{
  font-size: 13px;
  color: var(--fg);
  padding: 8px 10px;
  border-radius: 10px;
}
.gnav a[aria-current="page"]{
  background: #111;
  color:#fff;
}
.gnav__cta{
  margin-left: 6px;
}

/* footer */
.site-footer{
  border-top: 1px solid var(--line);
  background: #0b0b0b;
  color: #fff;
}
.site-footer__top{
  padding: 54px 0;
}
.fgrid{
  display:grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 24px;
}
.fbox{
  display:grid;
  gap: 12px;
}
.fbrand{
  display:flex;
  align-items:center;
  gap: 12px;
}
.fbrand__logo{
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.18);
  display:grid;
  place-items:center;
  font-size: 12px;
  color: rgba(255,255,255,.7);
  background: rgba(255,255,255,.06);
}
.fbrand__txt{ display:grid; gap: 4px; line-height: 1.1; }
.fbrand__txt strong{ font-size: 15px; }
.fbrand__txt span{ font-size: 12px; color: rgba(255,255,255,.7); }

.flink{
  display:grid;
  gap: 8px;
}
.flink a{
  color: rgba(255,255,255,.86);
  font-size: 13px;
  padding: 4px 0;
}
.flink a:hover{ color:#fff; }

.site-footer__bottom{
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 16px 0;
  color: rgba(255,255,255,.65);
  font-size: 12px;
}

/* forms */
.c-form{
  display:grid;
  gap: 14px;
}
.c-field{ display:grid; gap: 6px; }
.c-field label{ font-size: 13px; color: var(--muted); }
.c-field input,
.c-field textarea{
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 12px;
  background:#fff;
}
.c-field textarea{ min-height: 160px; resize: vertical; }


/* ===== heavy tone overrides (append) ===== */

/* base */
body{
  background: radial-gradient(1200px 600px at 20% 0%, rgba(199,162,74,.10), transparent 60%),
              radial-gradient(900px 520px at 80% 10%, rgba(120,140,170,.10), transparent 55%),
              var(--bg);
  color: var(--fg);
}

/* links */
a{ color: inherit; }
a:hover{ opacity: .92; }

/* header: glass感を抑えて重めに */
.site-header{
  background: rgba(11,15,20,.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-brand__logo{
  background: rgba(255,255,255,.03);
  border: 1px solid var(--line);
  color: var(--muted);
}
.site-brand__name span{ color: var(--muted); }

.gnav a{
  color: var(--fg);
}
.gnav a[aria-current="page"]{
  background: rgba(199,162,74,.18);
  color: var(--fg);
  border: 1px solid rgba(199,162,74,.35);
}
.gnav__cta.c-btn--ghost{
  border-color: rgba(199,162,74,.5);
  color: var(--fg);
}

/* page head: 内ページの見出し帯を重く */
.u-pagehead{
  background: linear-gradient(180deg, rgba(18,28,40,.95) 0%, rgba(11,15,20,.95) 100%);
  border-bottom: 1px solid var(--line);
}
.u-eyebrow{
  color: rgba(199,162,74,.85);
}
.u-title{ color: var(--fg); }
.u-lead{ color: var(--muted); }

/* sections */
.u-section{
  padding: 78px 0;
}

/* cards: 金属っぽい面/枠/影 */
.c-card{
  background: linear-gradient(180deg, rgba(18,28,40,.9) 0%, rgba(15,22,32,.9) 100%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.c-card__meta{ color: var(--muted); }

/* list items */
.c-list__item a{
  background: rgba(18,28,40,.85);
  border: 1px solid var(--line);
}
.c-list__date{ color: var(--muted); }

/* media placeholder */
.c-media{
  background: rgba(255,255,255,.03);
  border: 1px dashed rgba(231,237,245,.18);
  color: var(--muted);
}

/* buttons */
.c-btn{
  background: rgba(199,162,74,.95);
  border-color: rgba(199,162,74,.95);
  color: #0b0f14;
  font-weight: 700;
}
.c-btn--ghost{
  background: transparent;
  border-color: rgba(231,237,245,.35);
  color: var(--fg);
}
.c-btn--ghost:hover{
  border-color: rgba(199,162,74,.55);
}

/* footer: さらに締める */
.site-footer{
  background: #070a0e;
}
.site-footer__bottom{
  color: rgba(231,237,245,.55);
}

/* focus ring (暗背景用に見やすく) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible{
  outline: 2px solid rgba(199,162,74,.9);
  outline-offset: 3px;
}



/* hero carousel */
.c-hero{
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18,28,40,.9) 0%, rgba(11,15,20,.9) 100%);
  padding: 54px 0;
}
.c-hero__inner{
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 26px;
  align-items: center;
}
.c-hero__title{
  font-size: clamp(26px, 3vw, 44px);
  line-height: 1.12;
}
.c-hero__text{
  color: var(--muted);
  max-width: 70ch;
}
.c-hero__cta{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top: 14px;
}

.c-hero__stage{
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255,255,255,.02);
  box-shadow: var(--shadow);
}
.c-hero__slides{
  position: relative;
  height: 320px;
}
.c-hero__slide{
  position:absolute;
  inset:0;
  opacity:0;
  transform: scale(1.02);
  transition: opacity .6s ease, transform .8s ease;
  display:grid;
  place-items:center;
}
.c-hero__slide.is-active{
  opacity:1;
  transform: scale(1);
}
.c-hero__ph{
  width: 100%;
  height: 100%;
  display:grid;
  place-items:center;
  color: var(--muted);
  letter-spacing: .08em;
  background:
    linear-gradient(135deg, rgba(199,162,74,.18), transparent 55%),
    radial-gradient(700px 280px at 20% 20%, rgba(120,140,170,.18), transparent 55%),
    rgba(255,255,255,.03);
}

.c-hero__dots{
  position:absolute;
  left: 12px;
  bottom: 12px;
  display:flex;
  gap: 8px;
}
.c-hero__dot{
  width: 10px;
  height: 10px;
  border-radius: 999px;
  border: 1px solid rgba(231,237,245,.35);
  background: rgba(255,255,255,.06);
}
.c-hero__dot.is-active{
  border-color: rgba(199,162,74,.7);
  background: rgba(199,162,74,.7);
}

@media (max-width: 900px){
  .c-hero__inner{ grid-template-columns: 1fr; }
  .c-hero__slides{ height: 280px; }
}





/* responsive (minimal) */
@media (max-width: 900px){
  .u-grid--3{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fgrid{ grid-template-columns: 1fr; }
}


@media (max-width: 640px){
  :root{ --h-header: auto; }
  .site-header__bar{
    height: auto;
    padding: 14px 0;
    align-items: flex-start;
  }
  .gnav{
    width: 100%;
    justify-content: flex-start;
    gap: 8px;
  }
  .gnav a{ padding: 8px 8px; }
  .c-list__item a{ grid-template-columns: 1fr; }
}