@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;500;600;700&family=Cinzel:wght@400;500;600;700;800;900&family=Playfair+Display:ital,wght@0,400..900;1,400..900&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }


body {
    font-family: 'Noto Serif JP', serif;
    background:
        radial-gradient(circle at 20% 80%, rgba(255,107,107,0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,182,193,0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255,105,180,0.2) 0%, transparent 50%),
        linear-gradient(135deg, #ffeef2 0%, #fadadd 50%, #f8d7e0 100%);
    color: #2c1810;
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(120,40,40,0.1) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(80,40,120,0.1) 0%, transparent 50%);
    z-index: -2;
}

/* ── ナビゲーション（タイトル一体型・センター揃え） ── */

.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(178,34,34,0.2);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 2rem 0.4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

/* タイトル3行（中央） */
.nav-brand-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.1;
    text-align: center;
}
.nav-label {
    font-family: 'Cinzel', serif;
    font-size: 0.62rem;
    color: #8b4513;
    letter-spacing: 0.14em;
    opacity: 0.72;
    margin-bottom: 0.05rem;
}
.nav-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 900;
    background: linear-gradient(135deg, #b22222 0%, #8b0000 50%, #4a0000 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    line-height: 1.0;
    text-decoration: none;
    display: block;
}
.nav-subtitle-de {
    font-family: 'Cinzel', serif;
    font-size: 0.58rem;
    font-style: italic;
    color: #2f4f4f;
    letter-spacing: 0.07em;
    opacity: 0.68;
    margin-top: 0.05rem;
}

/* ナビリンク（タイトル直下） */
.nav-menu {
    list-style: none;
    display: flex;
    gap: 2.5rem;
    margin-top: 0.3rem;
}
.nav-link {
    color: #5d4037;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: 'Noto Serif JP', serif;
    transition: color 0.2s;
    padding: 0.2rem 0;
    position: relative;
    white-space: nowrap;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: linear-gradient(90deg, #b22222, #8b0000);
    transition: width 0.3s;
}
.nav-link:hover { color: #8b0000; }
.nav-link:hover::after { width: 100%; }

/* カウントダウン（ナビ右側・メニュー行と同じ高さ） */
.nav-countdown {
    position: absolute;
    right: 2rem;
    bottom: 0.35rem;
    text-align: right;
    line-height: 1.2;
}
.nav-countdown-meta {
    display: block;
    font-family: 'Noto Serif JP', serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: #8b4513;
    letter-spacing: 0.04em;
    opacity: 0.85;
    margin-bottom: 0.1rem;
    text-decoration: none;
}
.nav-countdown-meta:hover {
    opacity: 1;
    text-decoration: underline;
}
.nav-countdown-days {
    display: flex;
    align-items: baseline;
    justify-content: flex-end;
    gap: 0.2em;
    font-family: 'Noto Serif JP', serif;
    font-weight: 600;
    color: #8b4513;
    font-size: 0.75rem;
}
.nav-countdown-days #countdown-days {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    color: #b22222;
    font-size: 2rem;
    letter-spacing: -0.01em;
    line-height: 1;
}
.nav-countdown-unit {
    font-size: 0.75rem;
    font-family: 'Noto Serif JP', serif;
    color: #8b4513;
    font-weight: 600;
}

/* ハンバーガーボタン（デスクトップでは非表示） */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
}
.nav-toggle span {
    display: block;
    width: 22px; height: 2px;
    background: #8b0000;
    transition: all 0.3s;
    transform-origin: center;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── ライトボックス ── */

.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.88);
    z-index: 200;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.lightbox.open { display: flex; }

.lightbox-img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 0 80px rgba(0,0,0,0.6);
    cursor: default;
}

.lightbox-close {
    position: absolute;
    top: 1.2rem;
    right: 1.4rem;
    background: rgba(255,255,255,0.15);
    color: white;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 201;
}
.lightbox-close:hover { background: rgba(255,255,255,0.3); }

/* ── メインビジュアル ── */

.hero-image {
    max-width: 700px;
    margin: 2rem auto;
    padding: 0 1rem;
    text-align: center;
}
.hero-img {
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(139,0,0,0.3);
    cursor: pointer;
    transition: opacity 0.2s;
}
.hero-img:hover { opacity: 0.92; }

.credit-text {
    text-align: right;
    font-size: 0.72rem;
    color: #8b4513;
    margin-top: 0.4rem;
    opacity: 0.72;
}
.credit-text a {
    color: #8b4513;
    text-decoration: none;
    transition: color 0.2s;
}
.credit-text a:hover {
    color: #b22222;
    text-decoration: underline;
}

/* ── サークル参加 ── */

.circle-section {
    max-width: 800px;
    margin: 3rem auto;
    padding: 0 2rem;
    text-align: center;
}
.circle-section h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    background: linear-gradient(135deg, #b22222, #8b0000);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.circle-desc {
    font-size: 1.1rem;
    color: #5d4037;
    margin-bottom: 1.5rem;
}
.circle-banner-link {
    display: inline-block;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(178,34,34,0.25);
    transition: transform 0.3s, box-shadow 0.3s;
}
.circle-banner-link:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 50px rgba(178,34,34,0.4);
}
.circle-banner-img {
    display: block;
    max-width: 100%;
    height: auto;
}

/* ── 一般参加 ── */

.general-section {
    max-width: 800px;
    margin: 3rem auto;
    padding: 0 2rem;
    text-align: center;
}
.general-section h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    background: linear-gradient(135deg, #b22222, #8b0000);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.general-btn {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.9rem 2.5rem;
    background: linear-gradient(135deg, #b22222, #8b0000);
    color: #fff;
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: 40px;
    box-shadow: 0 6px 24px rgba(178,34,34,0.3);
    transition: transform 0.3s, box-shadow 0.3s;
    letter-spacing: 0.05em;
}
.general-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 36px rgba(178,34,34,0.45);
}

/* ── 会場・アクセス ── */

.venue-section {
    max-width: 1000px;
    margin: 5rem auto;
    padding: 0 2rem;
}
.venue-section h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2.5rem;
    background: linear-gradient(135deg, #b22222, #8b0000);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}
.venue-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
    gap: 3rem;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(10px);
    border-radius: 25px;
    padding: 3rem;
    box-shadow: 0 20px 70px rgba(0,0,0,0.12);
    border: 1px solid rgba(178,34,34,0.2);
    position: relative;
    overflow: hidden;
}
.venue-grid::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, #b22222, #8b0000, #b22222);
}
.venue-name {
    font-family: 'Playfair Display', serif;
    font-size: 1.7rem;
    font-weight: 700;
    color: #8b0000;
    margin-bottom: 0.2rem;
}
.venue-hall {
    font-size: 1rem;
    color: #5d4037;
    font-weight: 600;
    margin-bottom: 1rem;
}
.venue-address {
    font-size: 0.9rem;
    color: #5d4037;
    line-height: 1.7;
    margin-bottom: 1.8rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(178,34,34,0.15);
}
.access-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}
.access-item {
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
}
.access-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}
.access-item strong {
    font-size: 0.95rem;
    color: #2c1810;
    display: block;
    margin-bottom: 0.2rem;
}
.line-names {
    font-size: 0.82rem;
    color: #8b4513;
}
.venue-map {
    display: flex;
    flex-direction: column;
    min-height: 280px;
}
.venue-map iframe {
    width: 100%;
    flex: 1;
    min-height: 280px;
    border-radius: 15px;
    border: none;
    display: block;
}


/* ── ナビシェアボタン（左側・アイコンのみ） ── */

.nav-share {
    position: absolute;
    left: 2rem;
    bottom: 0.35rem;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.nav-share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.15s;
    flex-shrink: 0;
}
.nav-share-btn svg {
    width: 16px;
    height: 16px;
}
.nav-share-btn:hover {
    opacity: 0.78;
    transform: translateY(-1px);
}
.nav-share-x   { background: #000; color: #fff; }
.nav-share-line { background: #06c755; color: #fff; }
.nav-share-fb  { background: #1877f2; color: #fff; }
.nav-share-copy {
    background: transparent;
    color: #8b4513;
    border: 1.5px solid rgba(139,69,19,0.35);
    font-family: inherit;
}
.nav-share-copy:hover {
    background: rgba(139,69,19,0.06);
}

/* ── フッター ── */

footer {
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    text-align: center;
    padding: 3rem 2rem;
    margin-top: 6rem;
    color: #5d4037;
    border-top: 1px solid rgba(178,34,34,0.2);
}
.footer-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 1rem 2rem;
}
.footer-label {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: #8b0000;
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
    text-shadow: 1px 1px 2px rgba(139,0,0,0.3);
}
.footer-label-links {
    margin-top: 2rem;
}
.footer-contact {
    font-size: 1rem;
    color: #5d4037;
    margin-bottom: 0.5rem;
    line-height: 1.8;
}
.contact-link {
    color: #8b0000;
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.2s;
}
.contact-link:hover {
    opacity: 0.7;
}
.copyright {
    margin-top: 1.5rem;
    font-size: 0.75rem;
    color: #999;
    line-height: 1.6;
}
.official-link, .puniket-link, .sht-link {
    color: #8b4513;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s;
}
.official-link:hover, .puniket-link:hover, .sht-link:hover {
    color: #b22222;
    text-shadow: 0 0 10px rgba(178,34,34,0.5);
}

/* ════════════════════════════════════════
   メディアクエリ
   ════════════════════════════════════════ */

@media (max-width: 768px) {
    /* ナビ：ハンバーガー展開 */
    .nav-label, .nav-subtitle-de { display: none; }
    .nav-title { font-size: 1.4rem; }
    .nav-countdown { display: none; }
    .nav-share { display: none; }
    .nav-toggle { display: flex; }
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%; left: 0; right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(178,34,34,0.2);
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        margin-top: 0;
    }
    .nav-menu.open { display: flex; }
    .nav-link { padding: 1rem 1.5rem; border-top: 1px solid rgba(178,34,34,0.1); font-size: 1.1rem; }

    /* メインビジュアル・サークル */
    .hero-image { margin: 1.5rem auto; }
    .circle-section { margin: 2rem auto; padding: 0 1rem; }
    .circle-section h2 { font-size: 2rem; }

    /* 会場・アクセス */
    .venue-section { margin: 3rem auto; padding: 0 1rem; }
    .venue-section h2 { font-size: 2rem; margin-bottom: 2rem; }
    .venue-grid { grid-template-columns: 1fr; gap: 2rem; padding: 2rem 1.5rem; }
    .venue-map iframe { min-height: 240px; }

    /* フッター */
    footer { padding: 2rem 1rem; }
    .footer-label { font-size: 1.3rem; margin-bottom: 1rem; }
    .official-link, .puniket-link, .sht-link { font-size: 1rem; display: block; margin: 0.5rem 0; }
}

@media (max-width: 480px) {
    .nav-title { font-size: 1.2rem; }
    .circle-section h2 { font-size: 1.8rem; }
}