/* style.css - 全文 */
/* 全体レイアウトとレスポンシブ、装飾、アクセシビリティ対応 */

:root{
  --bg:#000000;
  --panel:#111;
  --accent1:#ff7ab6;
  --accent2:#7ad3ff;
  --accent3:#ffd27a;
  --text:#f5f5f5;
  --muted:#bdbdbd;
  --link:#1a73e8;
  --cell-light:#f7efe6; /* 薄い茶色 */
  --cell-white:#ffffff;
  --grid-gap:8px;
  --radius:12px;
  --max-width:980px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Segoe UI", Roboto, sans-serif;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding:20px;
  display:flex;
  justify-content:center;
}

.container{
  width:100%;
  max-width:var(--max-width);
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:16px;
  padding:18px;
  box-shadow:0 6px 30px rgba(0,0,0,0.6);
}

/* ヘッダー */
.header{
  display:flex;
  flex-direction:column;
  gap:10px;
  align-items:stretch;
}

.title-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

h1#site-title{
  margin:0;
  font-size:1.6rem;
  line-height:1;
  color:var(--accent2);
  background:linear-gradient(90deg,var(--accent1),var(--accent2),var(--accent3));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  font-weight:800;
  text-shadow:0 2px 8px rgba(0,0,0,0.6);
}

/* シェアボタン群 */
.share-bar{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}

.share-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border-radius:10px;
  border:0;
  cursor:pointer;
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  color:var(--text);
  font-weight:600;
  transition:transform .12s ease, box-shadow .12s ease;
}
.share-btn:hover{ transform:translateY(-3px); box-shadow:0 6px 18px rgba(0,0,0,0.6); }
.share-btn[data-share="x"]{ background:linear-gradient(90deg,#1DA1F2,#0d8bf0); color:#fff; border:1px solid rgba(255,255,255,0.04); }
.share-btn[data-share="facebook"]{ background:linear-gradient(90deg,#3b5998,#2d4373); color:#fff; }
.share-btn[data-share="line"]{ background:linear-gradient(90deg,#00c300,#00a000); color:#fff; }
.share-btn[data-share="instagram"]{ background:linear-gradient(90deg,#f58529,#dd2a7b,#8134af); color:#fff; }
.share-btn[data-share="email"]{ background:linear-gradient(90deg,#6b6b6b,#4a4a4a); color:#fff; }
.share-btn[data-share="native"]{ background:linear-gradient(90deg,#7ad3ff,#7affc2); color:#000; }

/* モードボタン */
.mode-bar{ display:flex; gap:8px; margin-top:8px; }
.mode-btn{
  padding:10px 14px;
  border-radius:12px;
  border:0;
  cursor:pointer;
  background:rgba(255,255,255,0.02);
  color:var(--text);
  font-weight:700;
}
.mode-btn.active{ box-shadow:0 6px 18px rgba(0,0,0,0.6); background:linear-gradient(90deg,#222,#333); color:var(--accent3); }

/* 音量バー */
.volume-row{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:12px;
}
.volume-row .label{ color:var(--muted); font-weight:600; width:48px; text-align:center; }
#volume-range{ flex:1; -webkit-appearance:none; height:8px; border-radius:8px; background:linear-gradient(90deg,var(--accent2),var(--accent1)); outline:none; }
#volume-range::-webkit-slider-thumb{ -webkit-appearance:none; width:18px; height:18px; border-radius:50%; background:#fff; box-shadow:0 2px 6px rgba(0,0,0,0.6); }

/* ゲームステージ */
.stage{
  margin-top:16px;
  display:flex;
  flex-direction:column;
  gap:12px;
  align-items:center;
}

#game-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:var(--grid-gap);
  width:min(640px, 92vw);
  aspect-ratio:1/1;
  padding:12px;
  border-radius:12px;
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  box-shadow:inset 0 2px 8px rgba(255,255,255,0.02);
}

/* マス */
.grid-cell{
  position:relative;
  border-radius:10px;
  padding:0;
  overflow:hidden;
  border:2px solid rgba(255,255,255,0.03);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--cell-white);
  transition:transform .12s ease, box-shadow .12s ease;
  height:100%;
}
.grid-cell:active{ transform:scale(.98); }
.grid-cell:nth-child(odd) .cell-bg{ background:var(--cell-light); }
.grid-cell:nth-child(even) .cell-bg{ background:var(--cell-white); }

.cell-bg{
  position:absolute;
  inset:0;
  opacity:0.95;
}
.cell-content{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:6px;
  pointer-events:none;
}
.bomb-icon, .human-icon{ width:48px; height:48px; transition:opacity .2s ease, transform .2s ease; opacity:0; }
.mine-count{ color:#fff; background:rgba(0,0,0,0.6); padding:4px 6px; border-radius:8px; font-weight:700; font-size:0.9rem; }
.occupant-label{ color:var(--text); font-weight:800; font-size:0.9rem; }

/* 説明文と爆破ボタン */
.description{
  margin-top:12px;
  padding:12px;
  background:rgba(255,255,255,0.02);
  border-radius:10px;
  color:var(--text);
  min-height:56px;
}
#explode-btn{
  margin-top:10px;
  padding:12px 18px;
  border-radius:12px;
  border:0;
  background:linear-gradient(90deg,#ff6b6b,#ff8a8a);
  color:#fff;
  font-weight:900;
  font-size:1.1rem;
  cursor:pointer;
  box-shadow:0 8px 30px rgba(255,80,80,0.12);
}

/* ハート表示 */
#hearts-wrap{ display:flex; gap:12px; margin-top:10px; flex-wrap:wrap; }
.player-heart{ color:var(--muted); font-weight:700; }

/* リンク群 */
.blue-link{ color:var(--link); text-decoration:underline; }

/* フラッシュ赤 (爆破時) */
.flash-red{
  animation: flashRedBg 5s linear;
}
@keyframes flashRedBg{
  0%{ background:var(--bg); }
  10%{ background:#4d0000; }
  50%{ background:#a00000; }
  100%{ background:var(--bg); }
}

/* コンテンツ下部 */
.content-block{ margin-top:18px; padding:12px; background:rgba(255,255,255,0.01); border-radius:10px; color:var(--muted); }

/* レスポンシブ: スマホ横向きで両端を画面端に合わせる */
@media (orientation: landscape) and (max-width:900px){
  body{ padding:0; }
  .container{ border-radius:0; padding:12px; max-width:100vw; width:100vw; }
  #game-grid{ width:100vw; height:calc(100vw - 220px); max-height:520px; }
}

/* 小さい画面 */
@media (max-width:600px){
  h1#site-title{ font-size:1.2rem; }
  .share-btn{ padding:8px; font-size:0.85rem; }
  #explode-btn{ font-size:1rem; padding:10px; }
}