/* ===========================
   基本設定
   =========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans JP", system-ui, -apple-system, sans-serif;
  font-weight: 700;
  background: linear-gradient(160deg, #fff0f5 0%, #fffaf4 70%);
  color: #333;
  min-height: 100vh;
}

/* ===========================
   ヘッダー
   =========================== */
.site-header {
  background: linear-gradient(135deg, #ff85a1, #ff5c8a);
  padding: 14px 24px 12px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(255, 92, 138, 0.40);
  position: relative;
}

.header-paws {
  display: block;
  font-size: 16px;
  opacity: 0.75;
  letter-spacing: 6px;
  margin-bottom: 6px;
}

.header-title {
  font-size: clamp(18px, 4vw, 26px);
  font-weight: 900;
  color: #fff;
  letter-spacing: 0.06em;
  text-shadow: 0 2px 8px rgba(180, 0, 60, 0.25);
}

/* ===========================
   メインコンテンツ
   =========================== */
.main-content {
  max-width: 780px;
  margin: 32px auto 48px;
  padding: 0 16px;
}

/* ===========================
   ヒーローセクション
   =========================== */
.event-hero {
  background: linear-gradient(145deg, #ff85a1 0%, #ff5c8a 45%, #ff8cb4 80%, #ffb3cc 100%);
  border-radius: 24px;
  padding: 52px 24px 44px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 14px 36px rgba(255, 92, 138, 0.42);
  margin-bottom: 30px;
}

.event-hero::before {
  content: "";
  position: absolute;
  top: -50px; left: -50px;
  width: 220px; height: 220px;
  background: rgba(255, 255, 255, 0.10);
  border-radius: 50%;
}

.event-hero::after {
  content: "";
  position: absolute;
  bottom: -70px; right: -30px;
  width: 280px; height: 280px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.event-hero-inner {
  position: relative;
  z-index: 1;
}

.event-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  border-radius: 999px;
  padding: 5px 20px;
  margin-bottom: 20px;
  border: 1px solid rgba(255, 255, 255, 0.45);
}

.event-title {
  font-size: clamp(38px, 9vw, 68px);
  font-weight: 900;
  color: #ffffff;
  line-height: 1.15;
  letter-spacing: 0.04em;
  margin-bottom: 26px;
  text-shadow: 0 4px 14px rgba(180, 0, 60, 0.30);
}

.event-hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.event-meta-pill {
  display: inline-block;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  background: rgba(255, 255, 255, 0.20);
  border-radius: 999px;
  padding: 7px 24px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  letter-spacing: 0.04em;
}

/* ===========================
   大会概要カード
   =========================== */
.event-card {
  background: #fff;
  border-radius: 22px;
  border: 2px solid #ffb3cc;
  padding: 32px 30px 30px;
  box-shadow: 0 6px 22px rgba(255, 92, 138, 0.13);
}

.event-card-heading {
  font-size: 21px;
  font-weight: 900;
  color: #ff5c8a;
  margin-bottom: 24px;
  letter-spacing: 0.04em;
  border-bottom: 3px solid #ffd6e7;
  padding-bottom: 14px;
}

.event-card-heading span {
  margin-right: 8px;
}

/* 定義リスト */
.event-dl {
  display: flex;
  flex-direction: column;
  margin-bottom: 26px;
}

.event-dl-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  padding: 14px 10px;
  border-bottom: 1px dashed #ffd6e7;
  align-items: start;
}

.event-dl-row:last-child {
  border-bottom: none;
}

.event-dl-row--highlight {
  background: #fff5f8;
  border-radius: 12px;
  border-bottom: 1px dashed #ffd6e7;
}

.event-dl dt {
  font-weight: 900;
  color: #ff5c8a;
  font-size: 14px;
  letter-spacing: 0.03em;
  white-space: nowrap;
  padding-top: 2px;
}

.event-dl dd {
  font-size: 15px;
  font-weight: 700;
  color: #333;
  line-height: 1.70;
}

.event-link {
  display: inline-block;
  margin-top: 6px;
  color: #ff5c8a;
  font-weight: 800;
  font-size: 13px;
  text-decoration: none;
  border-bottom: 1.5px dashed #ff5c8a;
  padding-bottom: 1px;
}

.event-link:hover {
  color: #cc2255;
  border-bottom-color: #cc2255;
}

/* 距離バッジ */
.distance-badge {
  display: inline-block;
  background: linear-gradient(135deg, #ff85a1, #ff5c8a);
  color: #fff;
  font-weight: 900;
  font-size: 14px;
  border-radius: 999px;
  padding: 5px 18px;
  margin: 3px 5px 3px 0;
  box-shadow: 0 3px 10px rgba(255, 92, 138, 0.38);
  letter-spacing: 0.03em;
}

/* ===========================
   参加登録ブロック
   =========================== */
.event-register {
  background: linear-gradient(135deg, #fff0f5, #ffe6ef);
  border-radius: 18px;
  border: 2px dashed #ffb3cc;
  padding: 24px 28px;
  text-align: center;
}

.event-register-text {
  font-size: 15px;
  font-weight: 700;
  color: #555;
  line-height: 1.75;
  margin-bottom: 18px;
}

.btn-register {
  display: inline-block;
  background: linear-gradient(135deg, #ff5c8a, #ff2d62);
  color: #fff;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.05em;
  border-radius: 999px;
  padding: 14px 40px;
  text-decoration: none;
  box-shadow: 0 7px 22px rgba(255, 45, 98, 0.42);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn-register:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(255, 45, 98, 0.52);
}

/* ===========================
   フッター
   =========================== */
.site-footer {
  background: linear-gradient(135deg, #ff85a1, #ff5c8a);
  text-align: center;
  padding: 18px 16px;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  box-shadow: 0 -4px 12px rgba(255, 92, 138, 0.25);
}

/* ===========================
   レスポンシブ
   =========================== */
@media (max-width: 540px) {
  .event-dl-row {
    grid-template-columns: 84px 1fr;
  }

  .event-card {
    padding: 22px 18px 22px;
  }

  .event-hero {
    padding: 38px 16px 32px;
  }
}