:root{
  --main:#71B600;
  --bg:#ffffff;
  --text:#222;
}
*{box-sizing:border-box}
body{font-family:Segoe UI, Yu Gothic, Meiryo, sans-serif;color:var(--text);background:var(--bg);margin:0}
.container{max-width:1000px;margin:0 auto;padding:20px}
.site-header{background:linear-gradient(90deg,var(--main),#5fa000);color:#fff}
.site-header .container{display:flex;flex-direction:column;gap:8px;padding-top:14px;padding-bottom:14px}
.site-header h1{margin:0;font-size:2.1rem;line-height:1.3;white-space:nowrap}
.main-nav{display:flex;flex-wrap:nowrap;gap:12px;border-top:1px solid rgba(255,255,255,0.2);padding-top:8px}
.main-nav a{color:#fff;text-decoration:none;white-space:nowrap;padding:6px 12px;border-radius:6px;font-size:1.2rem;transition:background .12s,box-shadow .12s,transform .12s}
.main-nav a:focus{outline:2px solid rgba(255,255,255,0.18);outline-offset:2px}
.main-nav a:hover,.main-nav a:focus{background:rgba(255,255,255,0.15);box-shadow:0 4px 12px rgba(0,0,0,0.12);transform:translateY(-1px)}
.hero{padding:60px 0;background:#f6fff0}
.hero h2{color:#4a7a00;margin:0 0 12px}
.btn{display:inline-block;padding:14px 32px;background:var(--main);color:#fff;border-radius:8px;text-decoration:none;font-size:1.1rem;font-weight:bold;letter-spacing:.04em}
.hero .hero-media{margin:16px 0;text-align:center}
.hero .hero-media img{max-width:360px;width:80%;height:auto;border-radius:8px;box-shadow:0 6px 18px rgba(0,0,0,0.08)}
.cards{display:flex;gap:18px;margin-top:24px;flex-wrap:wrap;justify-content:center}
.card{background:#fff;border:1px solid #e6e6e6;padding:12px;border-radius:8px;flex:0 0 calc(33.333% - 12px);min-width:240px;display:flex;flex-direction:column;align-items:center;text-align:center;position:relative;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease}
.card-img{display:block;margin:0 auto 12px;max-width:100%;height:auto;border-radius:6px}

/* 高さを基準に全アイコンのサイズを統一（アスペクト比維持） */
.card-img{height:80px;width:auto;max-width:100%;object-fit:contain}

/* カードのホバー/フォーカス時のフィードバック（緑系と相性の良い控えめな背景と影） */
.card:hover,.card:focus-within{transform:translateY(-6px);border-color:var(--main);box-shadow:0 12px 30px rgba(113,182,0,0.12);background:#f6fff0}

/* カード全体をクリッカブルにするストレッチリンク */
.card .link{position:absolute;inset:0;border-radius:8px;text-decoration:none;z-index:1}
.card .link::after{content:none}
.card .link:focus{outline:3px solid var(--main);outline-offset:2px}
/* 更新バッジ：data-updated="true" のカード右上に表示 */
.card[data-updated="true"]{position:relative}
.card[data-updated="true"]::before{content:'更新';position:absolute;top:-10px;right:-10px;background:#e85500;color:#fff;font-size:0.72rem;font-weight:bold;padding:3px 8px;border-radius:10px;letter-spacing:.04em;z-index:2;box-shadow:0 2px 6px rgba(0,0,0,0.18)}

/* 更新日時テキスト */
.card-updated{font-size:0.78rem;color:#888;margin:4px 0 0;}
.site-footer{background:#f4f4f4;padding:18px;text-align:center;color:#666}

.auth-ui{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding-top:8px;border-top:1px solid rgba(255,255,255,0.2)}
.auth-status{margin:0;font-size:0.95rem;font-weight:700;line-height:1.4;white-space:nowrap}
.auth-actions{display:flex;gap:8px;flex-wrap:wrap}
.auth-btn{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:10px 16px;border-radius:999px;border:1px solid transparent;font-size:0.9rem;font-weight:700;cursor:pointer;text-decoration:none;transition:background .12s,color .12s,border-color .12s}
.auth-btn-login{background:#fff;color:#4a7a00}
.auth-btn-login:hover,.auth-btn-login:focus{background:#f2ffe1}
.auth-btn-logout,.auth-btn-secondary{background:rgba(255,255,255,0.14);color:#fff;border-color:rgba(255,255,255,0.35)}
.auth-btn-logout:hover,.auth-btn-secondary:hover,.auth-btn-logout:focus,.auth-btn-secondary:focus{background:rgba(255,255,255,0.24)}
.auth-btn-logout{display:none}

.event-status-banner{border-bottom:1px solid #dce9c5;background:#f6fff0}
.event-status-inner{padding-top:10px;padding-bottom:10px}
.event-status-title{display:block;font-size:0.8rem;font-weight:700;letter-spacing:.04em;margin-bottom:3px;color:#4a7a00}
.event-status-text{margin:0;color:#2e3d12;font-size:0.95rem;line-height:1.5;font-weight:700}
.event-status-note{margin:4px 0 0;color:#5e6b47;font-size:0.84rem;line-height:1.5}

.event-status-banner.phase-before-entry{background:#f2f8ff;border-bottom-color:#cddff6}
.event-status-banner.phase-before-entry .event-status-title{color:#2f5d9d}

.event-status-banner.phase-entry-open{background:#f6fff0;border-bottom-color:#dce9c5}
.event-status-banner.phase-entry-open .event-status-title{color:#4a7a00}

.event-status-banner.phase-before-event{background:#fff9ec;border-bottom-color:#ead5a6}
.event-status-banner.phase-before-event .event-status-title{color:#7f5a00}

.event-status-banner.phase-event-live{background:#eef9ff;border-bottom-color:#c6e3f4}
.event-status-banner.phase-event-live .event-status-title{color:#00608a}

.event-status-banner.phase-event-ended{background:#f3f3f3;border-bottom-color:#d6d6d6}
.event-status-banner.phase-event-ended .event-status-title{color:#555}

.auth-modal{display:none}
.auth-modal.is-open{display:block}
.auth-modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,0.46);z-index:900}
.auth-modal-dialog{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:901;width:min(92vw,560px);background:#fff;border-radius:16px;padding:24px 24px 20px;box-shadow:0 20px 48px rgba(0,0,0,0.24)}
.auth-modal-dialog h2{margin:0 0 8px;color:#4a7a00;font-size:1.3rem}
.auth-modal-lead{margin:0 0 16px;color:#555;line-height:1.6}
.auth-field{display:block;margin-bottom:12px}
.auth-field span{display:block;margin-bottom:6px;font-size:0.88rem;font-weight:700;color:#555}
.auth-field input{width:100%;padding:11px 12px;border:1px solid #ccc;border-radius:8px;font-size:0.96rem}
.auth-field input:focus{outline:none;border-color:var(--main);box-shadow:0 0 0 3px rgba(113,182,0,0.15)}
.auth-field input:disabled{background:#f1f1f1;color:#999}
.auth-mode-select{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 12px}
.auth-mode-btn{flex:1 1 220px;padding:12px 14px;border:1px solid #cdd9b5;border-radius:10px;background:#fff;color:#4f5f1d;font-size:0.94rem;font-weight:700;cursor:pointer;transition:border-color .12s,background .12s,color .12s}
.auth-mode-btn.is-active{background:#f6fff0;border-color:var(--main);color:#3f6b00}
.auth-modal-note{margin:0;color:#666;font-size:0.9rem;line-height:1.6}
.auth-modal-actions{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap;margin-top:18px}
.auth-modal-actions .auth-btn-secondary{background:#f0f0f0;color:#555;border-color:#d7d7d7}
.auth-modal-actions .auth-btn-secondary:hover,.auth-modal-actions .auth-btn-secondary:focus{background:#e6e6e6}

/* ===== ハンバーガーボタン（PC では非表示） ===== */
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px 6px;color:#fff;flex-shrink:0;line-height:1;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle .bar{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:all .25s}

/* ===== スマホ対応 ≤767px (iPhone 15: 390px 論理px) ===== */
@media(max-width:767px){
  body{overflow-x:hidden}

  /* ヘッダー：横並び＋ハンバーガー */
  .site-header{position:relative}
  .site-header .container{flex-direction:row;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:12px 16px;gap:0}
  .site-header h1{order:1;font-size:1rem;white-space:normal;line-height:1.3;flex:1;max-width:calc(100% - 56px);margin:0 8px 0 0}
  .nav-toggle{display:flex;order:2}
  .auth-ui{order:3;gap:10px;padding-top:10px;margin-top:10px}
  .auth-status{font-size:0.86rem}
  .auth-actions{width:100%}
  .auth-btn{flex:1 1 0;min-height:42px;padding:10px 12px;font-size:0.86rem}
  .auth-btn-logout{flex:0 0 auto;width:auto;margin-left:auto}

  /* ナビ：ドロワー式（横幅100%で下に展開） */
  .main-nav{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:linear-gradient(180deg,#5fa000,#4a8000);border-top:1px solid rgba(255,255,255,0.15);padding:4px 0 8px;z-index:200;gap:0;box-shadow:0 6px 20px rgba(0,0,0,0.2)}
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 20px;font-size:1rem;border-radius:0;white-space:normal;border-bottom:1px solid rgba(255,255,255,0.08)}
  .main-nav a:last-child{border-bottom:none}
  .main-nav a:hover,.main-nav a:focus{background:rgba(255,255,255,0.12);transform:none;box-shadow:none}

  /* コンテナ */
  .container{padding:12px 16px}

  /* ヒーロー */
  .hero{padding:28px 0}
  .hero h2{font-size:1.15rem;line-height:1.5}
  .hero p{font-size:0.92rem}
  .btn{padding:13px 24px;font-size:1rem;display:block;text-align:center;width:100%}
  .event-status-inner{padding-top:8px;padding-bottom:8px}
  .event-status-text{font-size:0.86rem}
  .event-status-note{font-size:0.78rem}
  .auth-modal-dialog{padding:18px 16px 16px}
  .auth-modal-dialog h2{font-size:1.08rem}

  /* カード：2列グリッド */
  .cards{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
  .card{flex:none;min-width:0;padding:10px 8px}
  .card h3{font-size:0.85rem;margin:0 0 6px}
  .card p{font-size:0.76rem;margin:0;line-height:1.4}
  .card-img{height:52px;width:auto}

  /* ページヘッダー */
  .page-hero{padding:20px 0 14px}
  .page-hero h2{font-size:1.3rem}
  .page-hero p{font-size:0.85rem}

  /* フッター */
  .site-footer{font-size:0.82rem;padding:12px}
}

/* ===== iPhone 15 ぴったり (≤390px) ===== */
@media(max-width:390px){
  .site-header h1{font-size:0.9rem}
  .auth-ui{align-items:flex-start}
  .auth-actions{flex-direction:column}
  .auth-btn{width:100%}
  .auth-btn-logout{width:auto}
  .cards{grid-template-columns:1fr}
  .card{padding:12px 10px}
  .card h3{font-size:0.9rem}
  .card p{font-size:0.8rem}
}