/* =========================================================
   ReAct!! 公式サイト スタイルシート
   このファイルは見た目（色・余白・フォント等）を決めています。
   文章の変更は index.html を編集してください。
   ========================================================= */

:root {
  --color-primary: #d0021b;      /* チームカラー（赤） */
  --color-primary-dark: #a30115;
  --color-text: #222222;
  --color-text-light: #6b6b6b;
  --color-bg: #ffffff;
  --color-bg-alt: #fbf5f5;
  --color-bg-dark: #0c0505;      /* ダーク演出セクション用 */
  --color-bg-dark-2: #1a0808;
  --font-heading: "M PLUS Rounded 1c", "Noto Sans JP", sans-serif;
  --font-display: "Poppins", "M PLUS Rounded 1c", sans-serif; /* 英字の大見出し用 */
  --font-body: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
}

img { max-width: 100%; display: block; }

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky;
  top: 0;
  background: #ffffffee;
  backdrop-filter: blur(6px);
  border-bottom: 1px solid #eee;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
  flex-wrap: wrap;
  gap: 16px;
}

.logo-link { display: inline-block; }

.logo-img {
  height: 48px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  flex: 1;
  justify-content: center;
}

.site-nav a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}

.site-nav a:hover { color: var(--color-primary); text-decoration: none; }

.btn-pill {
  background: var(--color-primary);
  color: #fff;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 16px rgba(208, 2, 27, 0.35);
  white-space: nowrap;
}
.btn-pill:hover { text-decoration: none; opacity: 0.9; }

/* ---------- ヒーロー（ダーク演出） ---------- */
.hero-dark {
  position: relative;
  background: radial-gradient(ellipse at center 30%, var(--color-bg-dark-2) 0%, var(--color-bg-dark) 55%, #000 100%);
  color: #fff;
  padding: 120px 0 100px;
  text-align: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 45%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 640px;
  height: 640px;
  max-width: 140vw;
  max-height: 140vw;
  background: radial-gradient(circle, rgba(208, 2, 27, 0.55) 0%, rgba(208, 2, 27, 0.15) 45%, transparent 70%);
  filter: blur(10px);
  pointer-events: none;
}

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

.hero-eyebrow {
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  opacity: 0.85;
  margin: 0 0 20px;
}

.hero-logo-text {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(3rem, 12vw, 6.5rem);
  margin: 0 0 20px;
  line-height: 1;
  color: #fff;
  text-shadow: 0 0 24px rgba(208, 2, 27, 0.9), 0 0 60px rgba(208, 2, 27, 0.5);
}

.hero-logo-bang { color: #fff; }

.hero-tagline {
  font-size: 1.1rem;
  letter-spacing: 0.3em;
  margin: 0 0 40px;
  opacity: 0.95;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: relative;
  z-index: 1;
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: #999;
  margin: 48px 0 0;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-outline {
  border: 2px solid #fff;
  color: #fff;
}

.btn-light {
  background: #fff;
  color: var(--color-primary);
}

.btn-outline-light {
  border: 2px solid #fff;
  color: #fff;
}

.btn-outline-dark {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

/* ---------- セクション共通 ---------- */
.section {
  padding: 88px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-dark {
  background: radial-gradient(ellipse at center, var(--color-bg-dark-2) 0%, var(--color-bg-dark) 70%);
  color: #fff;
}

/* 英字＋日本語の2段見出し */
.bi-heading {
  text-align: center;
  margin: 0 0 48px;
}

.bi-heading-en {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  color: var(--color-primary);
  margin: 0 0 8px;
}

.bi-heading-ja {
  font-size: 0.95rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  margin: 0;
}

.bi-heading-light .bi-heading-en { color: #fff; }
.bi-heading-light .bi-heading-ja { color: #bbb; }

.section-lead {
  text-align: center;
  color: var(--color-text-light);
  margin: 0 0 40px;
}

/* ---------- チーム紹介 ---------- */
.about-content {
  max-width: 720px;
  margin: 0 auto;
}

.about-facts {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
}

.about-fact dt {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.about-fact dd {
  margin: 0;
}

/* ---------- なぜReAct!!なのか ---------- */
.why-name {
  margin-top: 64px;
  padding-top: 56px;
  border-top: 1px solid #eee;
}

.why-name-eyebrow {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
  margin: 0 0 4px;
}

.why-name-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-text);
  text-align: center;
  margin: 0 0 32px;
}

.why-name-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}

.why-name-item {
  background: var(--color-bg-alt);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
}

.why-name-number {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.why-name-item h4 {
  font-family: var(--font-heading);
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.why-name-item p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ---------- Vision ---------- */
.vision-card {
  max-width: 800px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 48px 40px;
  text-align: center;
}

.vision-headline {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 800;
  margin: 0 0 24px;
  line-height: 1.5;
}

.vision-highlight {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 4px;
}

.vision-body {
  color: #ccc;
  margin: 0;
  font-size: 0.95rem;
}

/* ---------- Information（活動情報カード） ---------- */
.info-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.info-card {
  background: #fff;
  border-left: 4px solid var(--color-primary);
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  padding: 24px 28px;
}

.info-card h4 {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  color: var(--color-text);
}

.info-card-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.info-card-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.info-tag {
  color: var(--color-text-light);
  font-size: 0.85rem;
}

.info-value {
  font-weight: 700;
  color: var(--color-primary);
}

.info-card-list-text li {
  display: list-item;
  list-style: disc;
  margin-left: 1.1em;
  justify-content: flex-start;
  color: var(--color-text);
  font-size: 0.92rem;
}

.info-card-note {
  margin: 14px 0 0;
  font-size: 0.75rem;
  color: var(--color-text-light);
}

/* ---------- 活動報告（ブログ） ---------- */
.blog-list {
  display: grid;
  gap: 20px;
  max-width: 760px;
  margin: 0 auto;
}

.blog-post {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.blog-post-image {
  width: 100%;
  max-height: 360px;
  object-fit: cover;
}

.blog-post-content {
  padding: 28px 32px;
}

.blog-post-date {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.85rem;
  margin: 0 0 8px;
  letter-spacing: 0.05em;
}

.blog-post-title {
  font-family: var(--font-heading);
  margin: 0 0 12px;
  font-size: 1.15rem;
}

.blog-post-body {
  margin: 0;
  color: var(--color-text);
  font-size: 0.95rem;
}

.blog-empty {
  text-align: center;
  color: var(--color-text-light);
}

/* ---------- 活動報告 一覧ページ（フィルター・検索） ---------- */
.archive-toolbar {
  max-width: 760px;
  margin: 0 auto 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.year-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.year-filter-btn {
  border: 1px solid #ddd;
  background: #fff;
  color: var(--color-text);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.year-filter-btn:hover {
  border-color: var(--color-primary);
}

.year-filter-btn.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.keyword-search-wrap {
  max-width: 400px;
  margin: 0 auto;
  width: 100%;
}

.keyword-search-input {
  width: 100%;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid #ddd;
  font-size: 0.9rem;
  font-family: var(--font-body);
}

.keyword-search-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.archive-back-link {
  text-align: center;
  margin-top: 48px;
}

.activity-more {
  text-align: center;
  margin-top: 40px;
}

/* ---------- メンバー募集 ---------- */
.join-section {
  background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  text-align: center;
}

.join-lead {
  max-width: 640px;
  margin: 0 auto 32px;
}

.join-highlights {
  list-style: none;
  padding: 0;
  margin: 0 auto 36px;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.join-highlights li {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: 12px 20px;
  font-size: 0.92rem;
}

.join-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.join-note {
  font-size: 0.85rem;
  opacity: 0.9;
}

/* ---------- 演舞依頼・お問い合わせ ---------- */
.contact-lead {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
  color: var(--color-text-light);
}

.contact-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- フッター ---------- */
.site-footer {
  background: #1a1a1a;
  color: #ccc;
  padding: 40px 0;
  text-align: center;
}

.footer-logo-img {
  height: 40px;
  width: auto;
  margin: 0 auto 16px;
}

.footer-social {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.footer-instagram {
  display: inline-block;
  color: #fff;
  margin-bottom: 0;
}

.footer-copyright {
  font-size: 0.75rem;
  color: #777;
  margin: 0;
}

.footer-admin-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.7rem;
  color: #555;
}
.footer-admin-link:hover { color: #999; }

/* ---------- レスポンシブ（スマホ） ---------- */
@media (max-width: 600px) {
  .header-inner { justify-content: center; text-align: center; }
  .site-nav { justify-content: center; order: 3; flex-basis: 100%; }
  .btn-pill { order: 2; }
  .about-facts { grid-template-columns: 1fr; }
  .hero-dark { padding: 88px 0 64px; }
  .section { padding: 64px 0; }
  .vision-card { padding: 32px 24px; }
}