@charset "utf-8";
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700;800;900&family=Outfit:wght@600;700;800;900&family=Noto+Sans+JP:wght@400;500;700;900&display=swap');

/* =========================================================
   RE:CREATION 2026 - ハイブリッド・ロイヤル＆3Dアリーナ
   体育祭・学内レクリエーション 2026
   ========================================================= */

:root {
  /* メインカラー: スカイシアンブルー (RGB 44, 159, 216) */
  --color-primary: rgb(44, 159, 216);
  --color-primary-rgb: 44, 159, 216;
  --color-primary-bright: #38B6F0;
  --color-primary-light: #5BC4F5;
  --color-primary-dark: #12638F;
  --color-primary-deep: #0B3F5E;
  --color-primary-midnight: #072B42;

  /* アクセントカラー: エナジーゴールド＆アンバー (シアンブルーに最高に映える差し色) */
  --color-accent: #FFA502;
  --color-accent-amber: #FEC838;
  --color-accent-rgb: 255, 165, 2;
  --color-accent-hover: #FFB733;
  --color-accent-coral: #FF6B4A;

  /* ベース背景: 画面全体を明るい青で満たすシアンオーシャン */
  --color-bg-base: #105E8C;
  --color-bg-gradient: linear-gradient(180deg, #105A87 0%, rgb(44, 159, 216) 24%, #1674A6 55%, #0F4C73 80%, #082F49 100%);

  /* 半透明グラスUI (Frosted Glass) */
  --glass-bg: rgba(255, 255, 255, 0.16);
  --glass-bg-hover: rgba(255, 255, 255, 0.24);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-border-gold: rgba(255, 165, 2, 0.55);
  --glass-border-hover: rgba(255, 165, 2, 0.85);
  --glass-shadow: 0 12px 35px rgba(5, 30, 48, 0.35), inset 0 1px 1px rgba(255, 255, 255, 0.25);
  --glass-shadow-hover: 0 18px 45px rgba(5, 30, 48, 0.45), 0 0 25px rgba(56, 182, 240, 0.45);

  /* ソリッドカード用 */
  --card-solid-bg: rgba(255, 255, 255, 0.96);
  --card-solid-text: #0B3A5D;

  /* テキストカラー: 青背景の上で輝くピュアホワイト */
  --text-primary: #FFFFFF;
  --text-secondary: #E1F2FC;
  --text-gold: #FFA502;
  --text-muted: #B5DCF5;
  --text-light: #8EC5EB;

  /* グラデーション */
  --grad-primary: linear-gradient(135deg, #38B6F0 0%, rgb(44, 159, 216) 50%, #12638F 100%);
  --grad-accent: linear-gradient(135deg, #FFA502 0%, #FF6B4A 100%);
  --grad-btn: linear-gradient(135deg, #FFA502 0%, #FF7F50 100%);

  /* シャドウ */
  --shadow-btn: 0 8px 24px rgba(0, 0, 0, 0.25), 0 0 15px rgba(255, 165, 2, 0.4);
  --shadow-blue-glow: 0 0 30px rgba(56, 182, 240, 0.5);

  /* タイポグラフィ: シャープで知的、かつ力強い幾何学フォント */
  --font-main: 'Plus Jakarta Sans', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: 'Outfit', 'Plus Jakarta Sans', sans-serif;

  /* トランジション: ボタンのみに限定 */
  --trans-fast: 0.16s ease;
  --trans-smooth: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --trans-spring: 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.25);
}

/* =========================================================
   Reset & Base Styles
   ========================================================= */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  list-style: none;
  text-decoration: none;
}

/* Web Components Container Fallback */
site-header,
site-footer {
  display: block;
}
@supports (display: contents) {
  site-header,
  site-footer {
    display: contents;
  }
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 68px;
  overflow-x: hidden;
  width: 100%;
}

body {
  min-height: 100vh;
  background-color: var(--color-bg-base);
  background: var(--color-bg-gradient);
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.8;
  overflow-x: hidden;
  width: 100%;
  -webkit-font-smoothing: antialiased;
}

@media screen and (max-width: 768px) {
  body {
    background-attachment: scroll;
  }
}

/* 共通アリーナ背景（案3: アリーナ・コートライン ＆ ネオンアンビエント） */
.bg-uroko-cyan {
  background-color: #071E30 !important;
  background-image:
    url("../images/arena-court-lines.svg"),
    /* 左上空から差し込むルミナスシアンのスポットライト光芒 */
    linear-gradient(135deg, rgba(56, 182, 240, 0.22) 0%, rgba(44, 159, 216, 0.08) 35%, transparent 65%),
    /* 右上空から交差するエナジーゴールドの補助スポットライト光芒 */
    linear-gradient(225deg, rgba(254, 200, 56, 0.18) 0%, rgba(255, 165, 2, 0.05) 30%, transparent 60%),
    /* 空間深度ベースグラデーション */
    linear-gradient(180deg, #071E30 0%, #0D3E5E 35%, #125A82 65%, #082840 100%) !important;
  background-repeat: no-repeat !important;
  background-position: center top, center, center, center !important;
  background-size: cover, 100% 100%, 100% 100%, 100% 100% !important;
  background-attachment: fixed !important;
}

/* 3DアリーナCanvas（ゾーンB: GPU独立コンポジットレイヤー隔離） */
#arena-grid-canvas,
#god-rays-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  will-change: transform;
  transform: translateZ(0);
}

#arena-grid-canvas {
  z-index: 1;
}

#god-rays-canvas {
  z-index: 2;
}

/* 体育館の天窓ハイライト光彩 ＆ スリット */
.skylight-ambient-glow {
  position: fixed;
  top: -120px;
  left: 20%;
  width: 650px;
  height: 450px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.45) 0%, rgba(92, 208, 255, 0.25) 45%, transparent 75%);
  filter: blur(50px);
  z-index: 3;
  pointer-events: none;
  animation: skylightBreathe 10s ease-in-out infinite alternate;
  will-change: opacity, transform;
  transform: translateZ(0);
}

@keyframes skylightBreathe {
  0% { transform: scale(1) translate(0, 0); opacity: 0.85; }
  100% { transform: scale(1.12) translate(30px, 15px); opacity: 1; }
}

.skylight-roof-strip {
  position: fixed;
  top: 0;
  left: 15%;
  width: 45%;
  height: 4px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.9) 30%, rgba(200, 245, 255, 1) 50%, rgba(255, 255, 255, 0.9) 70%, transparent 100%);
  box-shadow: 0 0 25px 6px rgba(255, 255, 255, 0.8), 0 0 50px 15px rgba(92, 208, 255, 0.5);
  z-index: 4;
  pointer-events: none;
}

#container {
  position: relative;
  z-index: 10;
}

::selection {
  background: #FFA502;
  color: #072B42;
}

/* =========================================================
   Global Navigation Bar (スリム化 58px / 深海シアンガラス)
   ========================================================= */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 58px;
  background: rgba(10, 46, 72, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1.5px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 20px rgba(5, 25, 40, 0.45);
  z-index: 9999;
  display: flex;
  align-items: center;
  transition: all var(--trans-smooth);
}

.header-container {
  width: 92%;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Brand Logo */
.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-brand a {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-brand img {
  height: 28px;
  width: auto;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
  transition: transform var(--trans-spring);
}

.header-brand:hover img {
  transform: scale(1.04);
}

.brand-badge {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 800;
  color: #07162C;
  background: var(--color-accent);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 20px;
  padding: 2px 10px;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.12s ease, filter 0.12s ease;
}
.brand-badge:active {
  transform: scale(0.92);
}

/* Desktop Navigation Menu */
.desktop-nav {
  display: flex;
  align-items: center;
}

.desktop-nav ul {
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

.desktop-nav ul li a {
  color: #FFFFFF;
  font-weight: 800;
  font-size: 0.98rem;
  padding: 8px 12px;
  position: relative;
  border-radius: 8px;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
  transition: all var(--trans-fast);
}

.desktop-nav ul li a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3.5px;
  background: #FFA502;
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--trans-smooth);
}

.desktop-nav ul li a:hover {
  background: rgba(255, 255, 255, 0.18);
  color: #FFFFFF;
}

.desktop-nav ul li a:hover::after,
.desktop-nav ul li a.active::after {
  width: 80%;
}

.desktop-nav ul li a.active {
  background: rgba(255, 255, 255, 0.24);
  color: #FFFFFF;
  font-weight: 900;
}

/* Header Action Buttons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-cta-movie {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--grad-accent);
  color: #FFFFFF;
  font-weight: 900;
  font-size: 0.95rem;
  padding: 10px 24px;
  border-radius: 30px;
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 4px 18px rgba(255, 165, 2, 0.45);
  transition: all var(--trans-smooth);
  cursor: pointer;
}

.btn-cta-movie:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 26px rgba(255, 165, 2, 0.65);
  filter: brightness(1.08);
  color: #FFFFFF;
}

/* Hamburger (Mobile & Tablet) */
.hamburger-box {
  display: none;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid #FFFFFF;
  border-radius: 10px;
  padding: 8px 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  transition: all var(--trans-fast);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.hamburger-box:hover,
.hamburger-box:active {
  background: rgba(255, 255, 255, 0.35);
  transform: translateY(-2px);
}

.hamburger {
  width: 26px;
  height: 20px;
  position: relative;
  pointer-events: none;
}

.hamburger span {
  display: block;
  position: absolute;
  height: 3px;
  width: 100%;
  border-radius: 2px;
  left: 0;
  background: #FFFFFF;
  transition: all var(--trans-spring);
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 8px; }
.hamburger span:nth-child(3) { top: 16px; }

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 8px;
  background: #FFA502;
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 8px;
  background: #FFA502;
}

/* Mobile Drawer Overlay */
.mobile-nav-drawer {
  position: fixed;
  top: 58px;
  right: -100%;
  width: min(340px, 85vw);
  height: calc(100vh - 58px);
  height: calc(100dvh - 58px);
  max-height: calc(100dvh - 58px);
  background: linear-gradient(180deg, #093757 0%, rgb(44, 159, 216) 100%);
  border-left: 4px solid #FFA502;
  box-shadow: -10px 0 35px rgba(5, 25, 40, 0.5);
  padding: 1.2rem 1.2rem calc(110px + env(safe-area-inset-bottom, 24px));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  transition: right var(--trans-spring);
  z-index: 9998;
  box-sizing: border-box;
}

.mobile-nav-drawer.active {
  right: 0;
}

.mobile-nav-drawer ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding-bottom: 2.5rem;
}

.mobile-nav-drawer ul li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #FFFFFF;
  font-size: 1.05rem;
  font-weight: 800;
  padding: 12px 18px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 12px;
  transition: all var(--trans-smooth);
}

.mobile-nav-drawer ul li a:hover {
  background: #FFA502;
  color: #072B42;
  border-color: #FFFFFF;
  transform: translateX(-4px);
}

/* =========================================================
   Typography & Immersive Section Headings
   ========================================================= */
h1, h2, h3, h4 {
  font-family: var(--font-main);
  font-weight: 900;
  letter-spacing: -0.01em;
}

h2.section-heading {
  font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  text-align: center;
  color: #FFFFFF;
  text-shadow: 0 3px 14px rgba(0, 0, 0, 0.35);
  margin-bottom: 0.8rem;
  position: relative;
  font-weight: 900;
}

.section-subheading {
  text-align: center;
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 1.8vw, 1.2rem);
  color: #D6EEFB;
  letter-spacing: 3px;
  font-weight: 900;
  margin-bottom: 3.8rem;
  text-transform: uppercase;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

/* =========================================================
   Universal Frosted Cyan Glass Cards
   ========================================================= */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 2px solid var(--glass-border);
  border-top: 4px solid #FFFFFF;
  border-radius: 22px;
  box-shadow: var(--glass-shadow);
  transition: transform var(--trans-smooth), box-shadow var(--trans-smooth), border-color var(--trans-smooth);
  position: relative;
  overflow: hidden;
  color: #FFFFFF;
}

/* クリック可能なリンクカードのみホバーエフェクトを適用（静的コンテナの無意味な浮き上がりとオレンジ変色を防止） */
a.glass-card:hover {
  transform: translateY(-6px);
  background: var(--glass-bg-hover);
  border-color: rgba(255, 255, 255, 0.7);
  border-top-color: #FFA502;
  box-shadow: var(--glass-shadow-hover);
}

/* =========================================================
   Athletic Buttons (オレンジ発光 & シアンソリッド)
   ========================================================= */
.btn-arcade {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--grad-btn);
  color: #FFFFFF !important;
  font-family: var(--font-main);
  font-weight: 900;
  font-size: 1.2rem;
  padding: 15px 38px;
  border-radius: 30px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-btn);
  cursor: pointer;
  transition: all var(--trans-fast);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

.btn-arcade:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 30px rgba(255, 165, 2, 0.65);
  filter: brightness(1.08);
  color: #FFFFFF !important;
}

.btn-arcade:active {
  transform: translateY(0);
}

/* =========================================================
   Floating Back to Top Button
   ========================================================= */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 54px;
  height: 54px;
  background: rgba(10, 50, 80, 0.85);
  backdrop-filter: blur(10px);
  border: 2.5px solid #FFFFFF;
  border-radius: 50%;
  color: #FFFFFF;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--trans-spring);
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px) scale(1.1);
  background: #FFA502;
  color: #FFFFFF;
  border-color: #FFFFFF;
  box-shadow: 0 12px 30px rgba(255, 165, 2, 0.6);
}

/* =========================================================
   Footer (深海オーシャンネイビー × アズールブルーライン)
   ========================================================= */
#footer {
  margin-top: 10rem;
  padding: 5.5rem 1rem 4rem;
  background: #061F33;
  border-top: 4px solid var(--color-primary);
  text-align: center;
  color: #B2D7F0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.footer-nav a {
  display: inline-flex;
  align-items: center;
  padding: 6px 4px;
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.05rem;
  transition: color var(--trans-fast);
}

.footer-nav a:hover {
  color: #FFA502;
  text-decoration: underline;
}

.footer-copy {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: #79A7C7;
  letter-spacing: 0.5px;
}

/* =========================================================
   Subpage Elements: Breadcrumbs, Title Banner & Podium
   ========================================================= */
.breadcrumb {
  max-width: 1300px;
  width: 92%;
  margin: 110px auto 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.98rem;
  font-weight: 800;
}

.breadcrumb a {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 14px;
  border-radius: 20px;
  transition: background var(--trans-fast);
}

.breadcrumb a:hover {
  background: #FFA502;
  color: #072B42;
}

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.6);
}

.breadcrumb .current {
  color: #D6EEFB;
}

/* ページタイトルステージ */
.page-title-box {
  text-align: center;
  margin: 2rem auto 4.5rem;
  max-width: 1200px;
  width: 92%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.08) 100%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 2.5px solid rgba(255, 255, 255, 0.4);
  border-radius: 24px;
  padding: 3.5rem 2rem;
  box-shadow: 0 12px 35px rgba(5, 30, 48, 0.35);
}

.page-title-box h1 {
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  color: #FFFFFF;
  margin-bottom: 0.8rem;
  font-weight: 900;
  text-shadow: 0 3px 15px rgba(0, 0, 0, 0.4);
}

.page-title-box p {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: #FFA502;
  letter-spacing: 3px;
  font-weight: 900;
  text-transform: uppercase;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* =========================================================
   Athletic Ranking Podium (表彰台)
   ========================================================= */
.podium-container {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 1.5rem;
  margin: 2rem auto 5rem;
  max-width: 850px;
  width: 95%;
}

.podium-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  border-radius: 20px 20px 12px 12px;
  padding: 2.2rem 1.2rem;
  border: 3px solid;
  position: relative;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: transform var(--trans-spring);
}

.podium-step:hover {
  transform: translateY(-8px);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
}

.podium-step.gold {
  order: 2;
  min-height: 290px;
  background: linear-gradient(180deg, rgba(255, 165, 2, 0.35) 0%, rgba(10, 46, 72, 0.95) 100%);
  border-color: #FFA502;
  box-shadow: 0 12px 35px rgba(255, 165, 2, 0.4);
}

.podium-step.silver {
  order: 1;
  min-height: 240px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.28) 0%, rgba(10, 46, 72, 0.95) 100%);
  border-color: #FFFFFF;
}

.podium-step.bronze {
  order: 3;
  min-height: 200px;
  background: linear-gradient(180deg, rgba(255, 107, 74, 0.3) 0%, rgba(10, 46, 72, 0.95) 100%);
  border-color: #FF6B4A;
}

.podium-rank {
  font-family: var(--font-display);
  font-size: 2.3rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
}

.podium-step.gold .podium-rank { color: #FFA502; text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5); }
.podium-step.silver .podium-rank { color: #FFFFFF; text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5); }
.podium-step.bronze .podium-rank { color: #FF7F50; text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5); }

.podium-class {
  font-size: 1.9rem;
  font-weight: 900;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.podium-score {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 900;
  color: #FFA502;
}

/* =========================================================
   Responsive Breakpoints
   ========================================================= */
@media screen and (max-width: 1100px) {
  .desktop-nav { display: none; }
  .btn-cta-movie { display: none; }
  .hamburger-box { display: flex; }
}

@media screen and (max-width: 680px) {
  #header { height: 70px; }
  .header-brand img { height: 32px; }
  .brand-badge {
    display: inline-flex !important;
    font-size: 9px;
    padding: 2px 8px;
    cursor: pointer;
    touch-action: manipulation;
    user-select: none;
  }
  .back-to-top { bottom: 20px; right: 20px; width: 46px; height: 46px; font-size: 0.95rem; }
}

@media screen and (max-width: 768px) {
  /* 1. スマホ背景の最適化（アスペクト比フィット＆眩しさカット） */
  body {
    background-attachment: scroll !important;
  }

  .bg-uroko-cyan {
    background-size: min(100vw, 420px) auto, 100% 100%, 100% 100%, 100% 100% !important;
    background-position: center 20px, center, center, center !important;
    background-attachment: scroll !important;
  }

  /* 天窓光彩をヘッダー裏側にスマート配置＆眩しさ完全カット */
  .skylight-ambient-glow {
    width: 320px;
    height: 180px;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    filter: blur(28px);
    animation: none;
    opacity: 0.22;
  }

  .skylight-roof-strip {
    width: 70%;
    left: 15%;
    opacity: 0.45;
  }

  /* 2. 深海ダークフロストガラス（背景の3Dアリーナ空間や光柱が美しく透ける / モバイル超高速60fps最適化） */
  #header {
    backdrop-filter: blur(6px) !important;
    -webkit-backdrop-filter: blur(6px) !important;
  }

  .basyo-card,
  .cyuui-block,
  .kyougiShousai-container,
  .event-guidelines {
    background: rgba(8, 36, 60, 0.65) !important;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
    border: 1px solid rgba(255, 255, 255, 0.28) !important;
    box-shadow: 0 12px 35px rgba(2, 16, 28, 0.4) !important;
  }

  .mobile-nav-drawer {
    top: 70px;
    height: calc(100vh - 70px);
  }

  /* 3. スマホ全般のタイポグラフィ最適化（洗練されたエディトリアル組版） */
  h1 {
    font-size: clamp(1.4rem, 5.2vw, 1.68rem);
    letter-spacing: 0.5px;
  }
  h2 {
    font-size: clamp(1.25rem, 4.6vw, 1.5rem);
    letter-spacing: 0.5px;
  }
  h3 {
    font-size: clamp(1.1rem, 3.8vw, 1.25rem);
  }
  h4 {
    font-size: 0.98rem;
    line-height: 1.6;
  }
  p, .lead {
    font-size: 0.92rem;
    line-height: 1.72;
    letter-spacing: 0.02em;
  }
  ul li, ol li {
    font-size: 0.92rem;
    line-height: 1.7;
  }

  /* 4. フッターのスマホ最適化 */
  .footer-links, .footer-nav {
    gap: 10px 16px;
    padding: 0 1rem;
  }
  .footer-links a, .footer-nav a {
    font-size: 0.84rem;
    padding: 4px 6px;
  }
  .footer-copy {
    font-size: 0.76rem;
    margin-top: 1.2rem;
    opacity: 0.75;
  }
}

/* =========================================================
   RE:CREATION 2026 - rec-img-2026 公式素材デザイン統合
   ========================================================= */

/* 1. 魚のうろこ背景パターン（全ページ共通アンビエントオーバーレイ：見やすく濃く調律） */
.uroko-ambient-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../images/uroko.png');
  background-repeat: repeat;
  background-size: 380px 380px;
  background-position: center top;
  opacity: 0.28;
  filter: brightness(1.20) contrast(1.15);
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 1;
  will-change: opacity;
}

/* 2. 各下層ページの光彩ルミナスポッド（高視認性ピュアホワイト＆多層フロスト台座・静的装飾） */
.page-symbol-badge {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 1.4rem;
  pointer-events: none; /* 押せない装飾のためホバー誤認を防止 */
}

.page-symbol-badge .symbol-pod,
.page-symbol-badge-pod {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 78px;
  height: 78px;
  border-radius: 22px;
  background: linear-gradient(145deg, 
    rgba(255, 255, 255, 0.32) 0%, 
    rgba(56, 182, 240, 0.40) 45%, 
    rgba(10, 36, 60, 0.80) 100%
  );
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 2px solid rgba(255, 255, 255, 0.85);
  box-shadow: 
    0 12px 32px rgba(2, 16, 32, 0.6), 
    0 0 28px rgba(56, 182, 240, 0.75), 
    inset 0 2px 2px rgba(255, 255, 255, 0.9),
    inset 0 -2px 6px rgba(0, 0, 0, 0.35);
  position: relative;
  cursor: default;
}

.page-symbol-badge .symbol-img {
  width: 46px;
  height: 46px;
  object-fit: contain;
  display: block;
  filter: 
    drop-shadow(0 2px 5px rgba(0, 0, 0, 0.5)) 
    drop-shadow(0 0 10px rgba(255, 255, 255, 0.95))
    drop-shadow(0 0 20px rgba(56, 182, 240, 0.85));
}

@media screen and (max-width: 680px) {
  .page-symbol-badge .symbol-pod,
  .page-symbol-badge-pod {
    width: 54px;
    height: 54px;
    border-radius: 16px;
  }
  .page-symbol-badge .symbol-img {
    width: 32px;
    height: 32px;
  }
}

/* 3. タイトルカードのうろこウォーターマーク装飾 */
.has-uroko-watermark {
  position: relative;
  overflow: hidden;
}

.has-uroko-watermark::before {
  content: "";
  position: absolute;
  top: -20px;
  right: -20px;
  width: 220px;
  height: 220px;
  background-image: url('../images/uroko.png');
  background-size: 180px 180px;
  background-repeat: no-repeat;
  background-position: top right;
  opacity: 0.28;
  filter: brightness(1.20) contrast(1.15);
  pointer-events: none;
  mask-image: radial-gradient(circle at top right, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at top right, black 30%, transparent 80%);
}

/* 4. モバイル専用改行タグ制御（PC時は非表示、スマホ画面幅で改行有効化） */
.sp-br, .sp-br1, .sp-br2 {
  display: none;
}

@media screen and (max-width: 680px) {
  .sp-br, .sp-br1, .sp-br2 {
    display: inline;
  }
}

/* =========================================================
   5. 全ページ共通集約スタイル（各ページCSSの重複を完全統合）
   ========================================================= */

/* 各メインコンテナの統一規格 */
.dojji-main, .relay-main, .tunahiki-main, .kamihikouki-main, .ninnkyaku-main,
.kyougi-main, .basyo-main, .cyuui-main, .situmonn-main, .photospot-main, .appli-main {
  max-width: 1200px;
  width: 92%;
  margin: 4rem auto 8rem;
}

/* 共通タイトルステージ（半透明フロストガラスカード） */
.dojji-title, .relay-title, .tunahiki-title, .kamihikouki-title, .ninnkyaku-title,
.kyougi-title-box, .basyo-title-box, .cyuui-title-box, .situmonn-title-box,
.photospot-title-box, .appli-title-box {
  text-align: center;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 2.5px solid rgba(255, 255, 255, 0.45);
  border-radius: 24px;
  padding: 3rem 2rem 3.5rem;
  box-shadow: 0 14px 40px rgba(5, 30, 48, 0.35);
  margin-bottom: 4rem;
}

.dojji-title h2, .relay-title h2, .tunahiki-title h2, .kamihikouki-title h2, .ninnkyaku-title h2,
.kyougi-title, .basyo-title h2, .cyuui-title h2, .situmonn-title h2, .photospot-title, .appli-title h2 {
  color: #FFFFFF;
  font-size: clamp(2.4rem, 5.2vw, 3.8rem);
  font-weight: 900;
  letter-spacing: 2px;
  text-shadow: 0 3px 15px rgba(0, 0, 0, 0.4);
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
}

.dojji-title h4, .relay-title h4, .tunahiki-title h4, .kamihikouki-title h4, .ninnkyaku-title h4, .appli-title h4 {
  font-size: 1.35rem;
  margin-top: 1.2rem;
  color: #FFA502;
  font-weight: 900;
  letter-spacing: 1px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* 競技詳細中間見出し */
.kyougiShousai-title h3,
.syuugou-title h3 {
  font-size: 2.2rem;
  color: #FFA502;
  text-align: center;
  margin: 4rem 0 2rem;
  font-weight: 900;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  letter-spacing: 1.5px;
}

/* 競技詳細コンテナ（5競技共通集約） */
.kyougiShousai-container {
  width: min(1000px, 95%);
  padding: 4.5rem 4rem;
  border: 2.5px solid rgba(255, 255, 255, 0.45);
  border-top: 5px solid #FFA502;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 16px 45px rgba(5, 30, 48, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.25);
  margin: 0 auto;
  color: #FFFFFF;
}

.kyougiShousai-container h3 {
  font-size: 1.85rem;
  color: #FFA502;
  border-bottom: 2px solid rgba(255, 255, 255, 0.35);
  padding-bottom: 0.6rem;
  margin-top: 3.5rem;
  margin-bottom: 1.5rem;
  font-weight: 900;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.kyougiShousai-container > div:first-child h3 {
  margin-top: 0;
}

.kyougiShousai-container h4,
.kyougiShousai-container li {
  font-size: 1.15rem;
  line-height: 2.2;
  color: #FFFFFF;
  font-weight: 700;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.kyougiShousai-container ul {
  padding-left: 1.2rem;
}

.rule p, .rule li {
  font-size: 1.15rem;
  line-height: 2.0;
}

.syuugou-text,
.syuugou-text p {
  font-size: 1.25rem;
  line-height: 2.0;
  text-align: center;
  font-weight: 800;
}

/* 全画像表示フレーム共通規格（スケジュール・座席・競技ルール画像・場所画像） */
.schedule-img, .zaseki, .basyo-img, .basyo-img2,
.dojji-img, .dojjibasyo-img, .relay-img, .relaybasyo-img,
.tunahiki-img, .tunahikibasyo-img, .kamihikouki-img, .kamihikoukibasyo-img,
.ninnkyaku-img, .ninnkyakubasyo-img, .appli-img {
  margin: 0 auto 5rem;
  width: min(1000px, 95%);
  height: 60vh;
  min-height: 420px;
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
  background-color: rgba(255, 255, 255, 0.95);
  border: 3px solid rgba(255, 255, 255, 0.7);
  border-radius: 24px;
  box-shadow: 0 16px 45px rgba(5, 30, 48, 0.45), 0 0 25px rgba(56, 182, 240, 0.3);
  transition: transform var(--trans-smooth);
}

/* 共通テキストカード（場所・注意・アプリ等） */
.basyo-text, .cyuui-block, .appli-card, .situmonn-card {
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-left: 6px solid #FFA502;
  border-radius: 18px;
  padding: 1.8rem 2.2rem;
  max-width: 900px;
  margin: 3rem auto;
  box-shadow: 0 12px 35px rgba(5, 30, 48, 0.35);
}

.basyo-text h4, .cyuui-block h4, .appli-card h4 {
  color: #FFFFFF;
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.8;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

/* =========================================================
   6. 低環境（低スペック端末・旧ブラウザ・省電力）対応フォールバック
   ========================================================= */

/* backdrop-filter非対応端末での視認性100%保証（文字が背景に溶けない高コントラストフォールバック） */
@supports not (backdrop-filter: blur(1px)) {
  #header,
  .dojji-title, .relay-title, .tunahiki-title, .kamihikouki-title, .ninnkyaku-title,
  .kyougi-title-box, .basyo-title-box, .cyuui-title-box, .situmonn-title-box,
  .photospot-title-box, .appli-title-box, .kyougiShousai-container,
  .basyo-text, .cyuui-block, .appli-card, .situmonn-card,
  .ranking-table-card, .cos-card-block, .feature-card, .category-card {
    background: rgba(8, 36, 60, 0.94) !important;
  }
}

/* 視覚効果低減設定（ユーザーがアニメーション低減を希望する場合の省電力対応） */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* 集約スタイルのモバイル最適化 */
@media screen and (max-width: 768px) {
  .dojji-main, .relay-main, .tunahiki-main, .kamihikouki-main, .ninnkyaku-main,
  .kyougi-main, .basyo-main, .cyuui-main, .situmonn-main, .photospot-main, .appli-main {
    margin: 1.5rem auto 4.5rem;
    width: 94%;
  }

  .dojji-title, .relay-title, .tunahiki-title, .kamihikouki-title, .ninnkyaku-title,
  .kyougi-title-box, .basyo-title-box, .cyuui-title-box, .situmonn-title-box,
  .photospot-title-box, .appli-title-box {
    padding: 1.6rem 1.0rem;
    margin-bottom: 2rem;
    border-radius: 16px;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
    background: rgba(8, 36, 60, 0.65) !important;
  }

  .dojji-title h2, .relay-title h2, .tunahiki-title h2, .kamihikouki-title h2, .ninnkyaku-title h2,
  .kyougi-title, .basyo-title h2, .cyuui-title h2, .situmonn-title h2, .photospot-title, .appli-title h2 {
    font-size: clamp(1.5rem, 5.5vw, 1.8rem);
  }

  .dojji-title h4, .relay-title h4, .tunahiki-title h4, .kamihikouki-title h4, .ninnkyaku-title h4, .appli-title h4 {
    font-size: 0.95rem;
    margin-top: 0.6rem;
  }

  .kyougiShousai-title h3,
  .syuugou-title h3 {
    font-size: 1.35rem;
    margin: 2.2rem 0 1.0rem;
  }

  .kyougiShousai-container {
    padding: 1.8rem 1.2rem;
    border-radius: 16px;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
    background: rgba(8, 36, 60, 0.65) !important;
  }

  .kyougiShousai-container h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 0.8rem;
  }

  .kyougiShousai-container h4,
  .kyougiShousai-container li {
    font-size: 0.92rem;
    line-height: 1.7;
  }

  .rule p, .rule li {
    font-size: 0.92rem;
    line-height: 1.65;
  }

  .syuugou-text,
  .syuugou-text p {
    font-size: 0.95rem;
    line-height: 1.65;
  }

  .schedule-img, .zaseki, .basyo-img, .basyo-img2,
  .dojji-img, .dojjibasyo-img, .relay-img, .relaybasyo-img,
  .tunahiki-img, .tunahikibasyo-img, .kamihikouki-img, .kamihikoukibasyo-img,
  .ninnkyaku-img, .ninnkyakubasyo-img, .appli-img {
    height: 35vh;
    min-height: 220px;
    margin: 0 auto 2.5rem;
    border-radius: 16px;
  }

  .basyo-text, .cyuui-block, .appli-card, .situmonn-card {
    padding: 1.2rem 1.4rem;
    margin: 1.8rem auto;
    border-radius: 14px;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
    background: rgba(8, 36, 60, 0.65) !important;
  }

  .basyo-text h4, .cyuui-block h4, .appli-card h4 {
    font-size: 0.94rem;
    line-height: 1.7;
  }
}




/* =========================================================
   COMING SOON / PREPARING 共通プレースホルダーUI
   ========================================================= */
.cs-placeholder-card {
  background: rgba(6, 26, 44, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 2px dashed rgba(56, 182, 240, 0.5);
  border-radius: 20px;
  padding: 3.5rem 2rem;
  text-align: center;
  box-shadow: 0 14px 40px rgba(2, 18, 32, 0.55);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  margin: 2rem 0;
  transition: all var(--trans-smooth);
}

.cs-placeholder-card:hover {
  border-color: rgba(254, 200, 56, 0.7);
  box-shadow: 0 18px 45px rgba(2, 18, 32, 0.65), 0 0 25px rgba(254, 200, 56, 0.2);
  transform: translateY(-3px);
}

.schedule-img {
  display: block;
  width: 80%;
  max-width: 1200px;
  height: auto;
  min-height: 0;
  margin: 0 auto 2rem;
  border-radius: 12px;
}

.competition-img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #082F49;
  font-size: 1.2rem;
  font-weight: 800;
}

.competition-img-placeholder p {
  margin: 0;
  text-align: center;
}

.competition-highlight {
  display: inline;
  padding: 0.1em 0.35em;
  border-radius: 0.3em;
  background: linear-gradient(135deg, #FEC838 0%, #FFD96A 100%);
  color: #082F49;
  font-weight: 900;
  box-shadow: 0 2px 8px rgba(254, 200, 56, 0.28);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.competition-important {
  color: #7DE3FF;
  font-weight: 900;
  text-shadow: 0 0 10px rgba(56, 182, 240, 0.35);
}

.cs-icon-pod {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  box-shadow: 0 0 20px rgba(255, 165, 2, 0.4);
}

.cs-icon-pod i,
.cs-icon-pod svg {
  width: 32px;
  height: 32px;
}

.cs-title {
  font-size: 1.45rem;
  font-weight: 900;
  color: #FFFFFF;
  letter-spacing: 1px;
  margin: 0;
}

.cs-desc {
  font-size: 1.02rem;
  color: #B5DCF5;
  line-height: 1.8;
  max-width: 540px;
  margin: 0;
}

.cs-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(254, 200, 56, 0.2);
  color: #FEC838;
  border: 1px solid rgba(254, 200, 56, 0.6);
  padding: 5px 16px;
  border-radius: 20px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 900;
  letter-spacing: 1px;
}


/* =========================================================
   HYBRID BACKGROUND: PROPOSAL A + B (案A + 案B ハイブリッド)
   CSS GPUアクセラレーテッド・サイバーコート（最軽量・完全固定60fps）
   ========================================================= */
body.bg-static-arena,
body.eco-mode {
  background-color: #071E30 !important;
  background-image:
    url('../images/arena-court-lines.svg'),
    radial-gradient(ellipse at 50% 15%, rgba(56, 182, 240, 0.28) 0%, rgba(13, 62, 94, 0.12) 45%, transparent 75%),
    linear-gradient(180deg, #071E30 0%, #0D3E5E 35%, #125A82 65%, #082840 100%) !important;
  background-repeat: no-repeat !important;
  background-position: center 80px, center top, center !important;
  background-size: min(1200px, 95vw) auto, 100% 100%, 100% 100% !important;
  background-attachment: fixed !important;
}

body.bg-static-arena #arena-grid-canvas,
body.bg-static-arena #god-rays-canvas,
body.eco-mode #arena-grid-canvas,
body.eco-mode #god-rays-canvas {
  display: none !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* アリーナ天井の微発光パルス（Breathing Glow: 完全GPU合成） */
body.bg-static-arena .skylight-ambient-glow,
body.eco-mode .skylight-ambient-glow {
  animation: arena-ambient-pulse 6s ease-in-out infinite alternate !important;
  transform: translateZ(0);
  will-change: opacity, transform;
}

@keyframes arena-ambient-pulse {
  0% { opacity: 0.55; transform: translateZ(0) scale(0.98); }
  100% { opacity: 0.90; transform: translateZ(0) scale(1.04); }
}

/* 背景軽量モード切り替えボタン */
.bg-mode-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(56, 182, 240, 0.35);
  color: #a4cde8;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}
.bg-mode-toggle:hover {
  background: rgba(56, 182, 240, 0.25);
  color: #ffffff;
  border-color: #38b6f0;
}
.bg-mode-toggle.active {
  background: rgba(255, 165, 2, 0.2);
  border-color: #FFA502;
  color: #FFA502;
}