/* ======= 基本設定 ======= */
body {
  font-family: "Noto Sans JP", sans-serif;
  margin: 0;
  background: #1a1a1a;
  color: #f5f5f5;
  line-height: 1.6;
}

header {
  text-align: center;
  background: #222;
  padding: 1.5em 1em 1em;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

header h1 {
  margin: 0 0 0.8em;
  font-size: 1.6em;
  color: #ff4081;
}

/* ======= フィルタエリア ======= */
#filters {
  display: flex;
  justify-content: center;
  gap: 1em;
  flex-wrap: wrap;
}

#filters select {
  background: #333;
  color: #fff;
  border: 1px solid #444;
  border-radius: 8px;
  padding: 0.5em 1em;
  font-size: 1em;
  cursor: pointer;
  transition: all 0.2s;
}

#filters select:hover {
  background: #444;
}

/* ======= グリッド表示 ======= */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5em;
  padding: 2em;
  max-width: 1200px;
  margin: 0 auto;
}

/* ======= カードデザイン ======= */
.card {
  background: #2a2a2a;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.5);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6);
}

.card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.card h2 {
  margin: 0.6em 0 0.4em;
  font-size: 1.1em;
  color: #ffb6c1;
  text-align: center;
}

.card p {
  font-size: 0.9em;
  padding: 0 1em;
  color: #ddd;
  text-align: center;
}

/* ======= リンクボタン ======= */
.links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4em;
  padding: 1em 0 1.4em;
}

.links a {
  padding: 0.4em 0.8em;
  border-radius: 6px;
  font-size: 0.85em;
  text-decoration: none;
  color: #fff;
  transition: 0.2s;
}

.links a:hover {
  opacity: 0.85;
}

.btn.fanza { background: #e60033; }
.btn.dlsite { background: #0084ff; }
.btn.booth { background: #ff5588; }
.btn.pictspace { background: #ffa500; }

/* ======= 年齢確認モーダル ======= */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal {
  background: #222;
  padding: 2em;
  border-radius: 12px;
  text-align: center;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 0 20px rgba(255, 64, 129, 0.4);
}

.modal h2 {
  color: #ff4081;
  margin-bottom: 0.8em;
}

.modal button {
  background: #ff4081;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.6em 1.2em;
  font-size: 1em;
  cursor: pointer;
  transition: background 0.2s;
}

.modal button:hover {
  background: #ff5f9d;
}

/* ======= フッター ======= */
footer {
  text-align: center;
  padding: 1em;
  background: #111;
  font-size: 0.8em;
  color: #aaa;
}