/* =========================================================
  updates.css (v1.7) optimized
  - 背景は base.css の .section--gray に委譲
  - 白い面（surface）で可読性UP
  - チップ：ラベル+件数（折り返し / PC&SP）
  - 一覧：SP 1 / PC 2→3 カラム
  - 本文：2〜3行表示 → 続きを読む（is-expanded）
  - 本文 ON/OFF（html.is-body-off）
  - 下段（フッター）色：薄いグレーで統一（高さ差が出ても白が出ない）
  - 黒背景は var(--c-bg-dark)
========================================================= */

/* =========================================================
  下段用の薄いグレー（デザイン維持・微調整はここだけ）
========================================================= */
:root{
  --u-foot-bg: rgba(0,0,0,.02);
  --u-foot-border: rgba(0,0,0,.06);
}

/* =========================================================
  白い面（視認性UP）
========================================================= */
.updates-surface{
  background:#fff;
  border: 1px solid rgba(0,0,0,.06);
  border-radius: 16px;
  padding: 18px 16px;
}

/* =========================================================
  カテゴリチップ（折り返し運用）
========================================================= */
.updates-toolbar{
  display:flex;
  flex-wrap: wrap;
  gap:10px;
  margin: 16px 0 16px;
  position: relative;
  z-index: 1;
}

.chip{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;

  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,.12);

  background:#fff;
  color:#111;
  text-decoration:none;

  font-weight: 900;
  font-size: 13px;
  line-height: 1;

  cursor: pointer;
  touch-action: manipulation;
}

.chip:hover{ border-color: rgba(0,0,0,.22); }
.chip:focus-visible{
  outline: 2px solid rgba(0,0,0,.35);
  outline-offset: 2px;
}

.chip.is-active{
  background: var(--c-bg-dark);
  color:#fff;
  border-color: var(--c-bg-dark);
  pointer-events: auto;
}

.chip__label{
  display:inline-block;
  white-space: nowrap;
}

.chip__count{
  display:inline-flex;
  align-items:center;
  justify-content:center;

  min-width: 2.2em;
  height: 22px;
  padding: 0 8px;

  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;

  background: rgba(0,0,0,.08);
  color:#111;
}

.chip.is-active .chip__count{
  background: rgba(255,255,255,.22);
  color:#fff;
}

/* =========================================================
  一覧（SP:1 / PC:2→3）
========================================================= */
.updates-list{
  display:grid;
  gap: 12px;
}

@media (min-width: 900px){
  .updates-list{
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 1200px){
  .updates-list{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.updates-empty{
  padding: 18px;
  border: 1px dashed rgba(0,0,0,.18);
  border-radius: 12px;
  color: rgba(0,0,0,.62);
  background:#fff;
}

/* =========================================================
  カード（高さ差が出ても白が出ない構造）
========================================================= */
.u-card{
  position: relative; /* NEWバッジ基準 */
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 14px;
  overflow:hidden;

  background: var(--u-foot-bg); /* 余白は下段色で統一 */
  display:flex;
  flex-direction: column;
}

.u-card.is-hidden{ display:none; }

/* 上段：白面 */
.u-card__top{
  padding: 14px;
  display:grid;
  gap: 10px;
  background:#fff;
  border-bottom: 1px solid var(--u-foot-border);
}

.u-card__meta{
  display:flex;
  align-items:center;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.u-date{ font-size: 12px; color: rgba(0,0,0,.55); }

.u-badge{
  display:inline-flex;
  align-items:center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0,0,0,.06);
  font-size: 12px;
  font-weight: 900;
  color:#111;
}

/* タイトル（SP最大3行 / それ以外2行） */
.u-card__title{
  font-size: 15px;
  font-weight: 900;
  color:#111;
  line-height: 1.35;

  min-width: 0;
  display:-webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow:hidden;
}

@media (max-width: 640px){
  .u-card__title{ -webkit-line-clamp: 3; }
}

/* =========================================================
  本文（最初から2〜3行表示 → 続きを読む）
========================================================= */
.u-card__body{
  padding: 0 14px 12px;
  background:#fff;
}

.u-desc{
  position: relative;
  color: rgba(0,0,0,.80);
  line-height: 1.85;

  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

.u-card:not(.is-expanded) .u-desc::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:0;
  height: 2.2em;
  background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,1));
  pointer-events:none;
}

.u-card.is-expanded .u-desc{
  -webkit-line-clamp: unset;
  overflow: visible;
}
.u-card.is-expanded .u-desc::after{ display:none; }

/* =========================================================
  下段：ボタン列（薄いグレーで統一）
========================================================= */
.u-card__foot{
  margin-top: auto; /* 下段を常に最下部へ */
  padding: 12px 14px;

  background: var(--u-foot-bg);
  border-top: 1px solid var(--u-foot-border);

  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

/* =========================================================
  続きを読むボタン（押せるUI）
========================================================= */
.u-more{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;

  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;

  background: #fff;
  border: 1px solid rgba(0,0,0,.14);
  color:#111;

  font-weight: 900;
  font-size: 13px;

  cursor:pointer;
  touch-action: manipulation;

  transition: background .18s ease, border-color .18s ease, transform .05s ease;
}

.u-more:hover{
  background: rgba(0,0,0,.03);
  border-color: rgba(0,0,0,.20);
}
.u-more:active{ transform: translateY(1px); }

.u-more:focus-visible{
  outline: 2px solid rgba(0,0,0,.35);
  outline-offset: 2px;
}

.u-more__icon{
  display:inline-block;
  font-size: 18px;
  line-height: 1;
  color: rgba(0,0,0,.60);
  transform: rotate(0deg);
  transition: transform .18s ease, color .18s ease;
}

.u-card.is-expanded .u-more__icon{
  transform: rotate(90deg);
  color: rgba(0,0,0,.80);
}

/* =========================================================
  ボタン（共通）
========================================================= */
.u-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;

  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;

  background: var(--c-bg-dark);
  color:#fff;
  text-decoration:none;

  font-weight: 900;
  border: 1px solid var(--c-bg-dark);

  cursor:pointer;
  touch-action: manipulation;
}

.u-btn:hover{ opacity:.92; }
.u-btn:focus-visible{
  outline: 2px solid rgba(0,0,0,.35);
  outline-offset: 2px;
}

.u-btn--ghost{
  background: transparent;
  color:#111;
  border-color: rgba(0,0,0,.25);
}
.u-btn--ghost:hover{
  background: var(--c-bg-dark);
  color:#fff;
  border-color: var(--c-bg-dark);
}

.u-btn--sm{
  min-height: 36px;
  padding: 0 12px;
  font-size: 13px;
}

.u-btn--link{
  white-space: nowrap;
}

/* もっと見る */
.updates-more{
  display:flex;
  justify-content:center;
  margin: 18px 0 0;
}

/* =========================================================
  本文 ON/OFF コントロール
========================================================= */
.updates-controls{
  display:flex;
  justify-content:flex-end;
  margin: 0 0 12px;
}

.u-toggle{
  display:inline-flex;
  align-items:center;
  gap: 10px;

  padding: 8px 12px;
  border-radius: 999px;

  background:#fff;
  border: 1px solid rgba(0,0,0,.12);
  color:#111;

  font-weight: 900;
  font-size: 13px;

  cursor:pointer;
  touch-action: manipulation;
}

.u-toggle:hover{
  border-color: rgba(0,0,0,.20);
  background: rgba(0,0,0,.02);
}

.u-toggle:focus-visible{
  outline: 2px solid rgba(0,0,0,.35);
  outline-offset: 2px;
}

.u-toggle__label{ white-space: nowrap; }

.u-toggle__state{
  display:inline-flex;
  align-items:center;
  justify-content:center;

  min-width: 2.6em;
  height: 22px;
  padding: 0 10px;

  border-radius: 999px;
  background: rgba(0,0,0,.08);
  font-size: 12px;
}

.u-toggle[aria-pressed="false"]{
  background: rgba(0,0,0,.02);
  border-color: rgba(0,0,0,.16);
}
.u-toggle[aria-pressed="false"] .u-toggle__state{
  background: rgba(0,0,0,.10);
}

/* 本文を完全非表示 */
html.is-body-off .u-card__body{ display:none !important; }
html.is-body-off .u-more{ display:none !important; }

/* OFF時：下段の余白を少し詰める */
html.is-body-off .u-card__foot{
  padding-top: 10px;
  padding-bottom: 10px;
}

/* OFF時：タイトルは2行に固定（密度UP） */
html.is-body-off .u-card__title{
  -webkit-line-clamp: 2;
}

/* =========================================================
  SP最適化
========================================================= */
@media (max-width: 640px){

  .updates-surface{
    padding: 16px 14px;
    border-radius: 14px;
  }

  .updates-toolbar{
    gap: 8px 8px;
    margin: 14px 0 14px;
  }

  .chip{
    padding: 8px 10px;
    font-size: 12px;
    gap: 6px;
  }

  .chip__count{
    height: 20px;
    min-width: 2.0em;
    padding: 0 7px;
    font-size: 11px;
  }

  .u-desc{
    -webkit-line-clamp: 4;
  }

  .u-card__foot{
    padding: 12px 12px;
  }

  .u-more{
    min-height: 40px;
    font-size: 12px;
  }

  .u-btn{
    min-height: 44px;
  }

  .u-btn--sm{
    min-height: 40px;
  }

  .updates-controls{
    margin-bottom: 10px;
  }

  .u-toggle{
    padding: 8px 10px;
    font-size: 12px;
  }

  .u-toggle__state{
    height: 20px;
    font-size: 11px;
  }
}

/* =========================================================
  NEWバッジ（余白確保だけ：バッジ本体は別コンポーネント想定）
========================================================= */
.u-card.is-new .u-card__top{ padding-top: 44px; }
@media (max-width: 640px){
  .u-card.is-new .u-card__top{ padding-top: 42px; }
}

/* =========================================================
  widget（再利用）
========================================================= */
.u-widget{
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 14px;
  background:#fff;
  padding: 14px;
}

.u-widget__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 10px;
  margin: 0 0 10px;
}

.u-widget__title{ font-weight: 900; letter-spacing: .02em; }

.u-widget__more{
  font-size: 13px;
  font-weight: 900;
  text-decoration:none;
  color:#111;
}
.u-widget__more:hover{ text-decoration:underline; }

.u-widget__list{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap: 10px;
}

.u-widget__item{
  padding: 10px;
  border-radius: 12px;
  background: rgba(0,0,0,.03);
}

.u-widget__meta{
  display:flex;
  align-items:center;
  gap: 10px;
  font-size: 12px;
  color: rgba(0,0,0,.55);
  margin: 0 0 6px;
}

.u-widget__row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 10px;
}

.u-widget__text{
  font-weight: 900;
  color:#111;
  line-height: 1.35;
}

.u-widget--empty{
  border: 1px dashed rgba(0,0,0,.18);
  border-radius: 14px;
  padding: 14px;
  color: rgba(0,0,0,.62);
  background:#fff;
}