/* ================================
   全体共通
================================ */
body {
  background-color: #f7faf8;
  margin: 0;
  padding: 0;
  font-family: "ヒラギノ角ゴ ProN", "Meiryo", sans-serif;
  color: #333333; /* ← 濃いグレーに変更 */
}

h3, h4 {
  color: #000066;
}

#main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem;
  box-sizing: border-box;
}

/* ================================
   本文内リンク（反転効果つき）
================================ */
#main a {
  color: #4b3fa3; /* 通常時：紫系 */
  background-color: transparent;
  text-decoration: none;
  transition: all 0.25s ease;
  padding: 0.1rem 0.2rem;
  border-radius: 4px;
}

#main a:hover {
  color: #ffffff;            /* 文字を白に反転 */
  background-color: #779ce9; /* 背景を紫に反転 */
  text-decoration: none;
}

/* ================================
   ヘッダー
================================ */
#header {
  background-color: #f3eefe; /* 薄い紫帯（控えめ） */
  padding: 0.8rem 0;
}

#header h1 {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
  text-align: left;
}

#header img {
  max-width: 300px;
  height: auto;
  vertical-align: middle;
}

/* ================================
   パンくず
================================ */
#bread {
  font-size: 0.9rem;
  color: #333;
  padding: 0.5rem 1rem;
}

/* ================================
   見出し・本文
================================ */
h3 {
  margin-top: 1.5rem;
  color: #000066;
}

h4 {
  margin-top: 1.2rem;
  color: #000066;
}

p {
  line-height: 1.7;
  margin: 0.8rem 0;
}

/* 汎用：上にラインのある見出し */
.section-title {
  margin-top: 2rem;
  padding-top: 0.5rem;
  border-top: 2px solid #d4d1d9;
  color: #000066;
  font-size: 1.1rem;
  font-weight: bold;
}

/* ================================
   ポスター一覧（入賞作品・上位入賞）
================================ */

/* 上位入賞リスト */
.poster-list-t {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  justify-content: center;
}

.poster-list-t li {
  flex: 0 1 240px;
  text-align: center;
}

.poster-list-t img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  transition: transform 0.25s ease;
}

.poster-list-t img:hover {
  transform: scale(1.05);
}

/* 入賞リスト */
.poster-list-p {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  justify-content: center;
}

.poster-list-p li {
  flex: 0 1 200px;
  text-align: center;
}

.poster-list-p img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  transition: transform 0.25s ease;
}

.poster-list-p img:hover {
  transform: scale(1.05);
}

.center-title {
  text-align: center;
  font-size: 1.2rem;
  font-weight: bold;
  color: #000066;
  margin: 2rem 0 1rem;
}

/* ================================
   モーダル（画像拡大）
================================ */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  inset: 0;
  padding-top: 60px;
  background-color: rgba(0,0,0,0.8);
}

.modal-content {
  display: block;
  margin: auto;
  max-width: 90%;
  max-height: 80%;
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(255,255,255,0.2);
  animation: zoomIn 0.3s ease;
}

.close {
  position: absolute;
  top: 20px;
  right: 35px;
  color: #fff;
  font-size: 2rem;
  font-weight: bold;
  cursor: pointer;
}

@keyframes zoomIn {
  from { transform: scale(0.7); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* ================================
   フッター
================================ */
#footer {
  text-align: center;
  padding: 1rem;
  background: #e7e6e6;
  font-size: 0.9rem;
  color: #333;
}

/* ================================
   レスポンシブ対応
================================ */
@media (max-width: 768px) {
  #main {
    max-width: 95%;
    padding: 0.8rem;
  }

  #header h1 {
    text-align: center;
  }

  .poster-list-t li,
  .poster-list-p li {
    flex: 0 1 45%;
  }
}

@media (max-width: 480px) {
  .poster-list-t li,
  .poster-list-p li {
    flex: 0 1 100%;
  }

  #footer {
    font-size: 0.85rem;
  }
}