/* リセットとベーススタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', 'Meiryo', sans-serif;
    line-height: 1.7;
    color: #333;
    background-color: #fff;
    font-weight: 300;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/sakura-bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.3;
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヘッダー */
.header {
    background: linear-gradient(135deg, #ffb7c5 0%, #ff9a9e 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav a {
    color: white;
    text-decoration: none;
    font-weight: 300;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: #f0f0f0;
}

/* メインコンテンツ */
main {
    margin-top: 80px;
}

/* ヒーローセクション */
.hero {
    background: linear-gradient(135deg, #ffb7c5 0%, #ff9a9e 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 400;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', 'Meiryo', sans-serif;
}

.btn-primary {
    background: #e91e63;
    color: white;
}

.btn-primary:hover {
    background: #c2185b;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(233, 30, 99, 0.4);
}

/* セクション共通 */
.section {
    padding: 4rem 0;
}

.section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
    position: relative;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #ffb7c5 0%, #ff9a9e 100%);
}

/* 私たちについて */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-text h3 {
    color: #e91e63;
    margin: 2rem 0 1rem 0;
    font-size: 1.3rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.about-text li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background: rgba(248, 249, 250, 0.9);
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    backdrop-filter: blur(5px);
}

.stat h3 {
    color: #e91e63;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.stat p {
    font-size: 1.2rem;
    font-weight: 400;
    color: #333;
}

/* 活動内容 */
.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.activity-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(5px);
}

.activity-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.activity-card h3 {
    color: #e91e63;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.activity-card p {
    color: #666;
    line-height: 1.6;
}

/* 会員募集 */
.membership-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.membership-intro {
    font-size: 1.1rem;
    margin-bottom: 3rem;
    color: #666;
    line-height: 1.8;
}

.membership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.membership-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid transparent;
    backdrop-filter: blur(5px);
}

.membership-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-color: #ffb7c5;
}

.membership-card h3 {
    color: #e91e63;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.membership-details {
    margin-bottom: 1.5rem;
}

.fee-item {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid #f0f0f0;
    gap: 1.5rem;
}

.fee-item:last-child {
    border-bottom: none;
}

.fee-label {
    font-weight: 400;
    color: #666;
}

.fee-amount {
    font-size: 1.3rem;
    font-weight: 500;
    color: #e91e63;
    text-align: left;
}

.fee-note {
    font-size: 0.9rem;
    color: #999;
    font-weight: 300;
    margin-left: 0.5rem;
}

.membership-description {
    color: #666;
    line-height: 1.6;
    font-size: 0.95rem;
}

.membership-cta {
    margin-top: 2rem;
}

.membership-cta p {
    margin-bottom: 1.5rem;
    color: #666;
    font-size: 1.1rem;
}

/* お問い合わせ */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-content > p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #666;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.contact-item {
    background: rgba(248, 249, 250, 0.9);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    backdrop-filter: blur(5px);
}

.contact-item h3 {
    color: #e91e63;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.contact-item p {
    color: #333;
    font-weight: 400;
}

/* フッター */
.footer {
    background: #333;
    color: white;
    padding: 2rem 0;
    margin-top: 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-main {
    text-align: center;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

.info-item {
    display: flex;
    gap: 0.5rem;
}

.info-label {
    font-weight: 400;
}

.info-value {
    font-weight: 300;
}

/* 活動内容ページ */
.activity-detail {
    max-width: 800px;
    margin: 0 auto;
}

.activity-content h3 {
    color: #e91e63;
    margin: 2rem 0 1rem 0;
    font-size: 1.3rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.activity-content h3:first-child {
    margin-top: 0;
}

.activity-content p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: #666;
}

.activity-image {
    margin-bottom: 2rem;
    text-align: center;
}

.activity-img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.activity-img:hover {
    transform: scale(1.02);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(5px);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.feature-card h3 {
    color: #e91e63;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

.achievements {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.achievement-item {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(5px);
}

.achievement-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.achievement-item h3 {
    color: #e91e63;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.achievement-item p {
    color: #666;
    line-height: 1.6;
}

/* 応援ページ */
.support-content {
    max-width: 900px;
    margin: 0 auto;
}

.support-intro {
    text-align: center;
    margin-bottom: 3rem;
}

.support-intro p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 1rem;
}

.support-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.gallery-item {
    text-align: center;
}

.support-img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.support-img:hover {
    transform: scale(1.02);
}

.video-item {
    text-align: center;
}

.support-video {
    width: 100%;
    max-width: 600px;
    height: 400px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.support-video:hover {
    transform: scale(1.02);
}

.support-detail {
    max-width: 800px;
    margin: 0 auto;
}

.support-detail h3 {
    color: #e91e63;
    margin: 2rem 0 1rem 0;
    font-size: 1.3rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.support-detail h3:first-child {
    margin-top: 0;
}

.support-detail p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: #666;
}

.message-content {
    max-width: 800px;
    margin: 0 auto;
}

.message-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    backdrop-filter: blur(5px);
    text-align: center;
}

.message-card h3 {
    color: #e91e63;
    margin-bottom: 2rem;
    font-size: 1.5rem;
    font-weight: 400;
    font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', 'Meiryo', serif;
}

.message-card p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 1.5rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav ul {
        gap: 1rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .section h2 {
        font-size: 2rem;
    }
    
    .activities-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .membership-grid {
        grid-template-columns: 1fr;
    }
    
    .membership-card {
        padding: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-info {
        align-items: center;
    }
    
    .support-video {
        height: 300px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 3rem 0;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .section h2 {
        font-size: 1.8rem;
    }
}

/* ハンバーガーメニュー */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1100;
}
.hamburger span {
    display: block;
    height: 4px;
    width: 28px;
    margin: 5px auto;
    background: #fff;
    border-radius: 2px;
    transition: 0.3s;
}

@media (max-width: 900px) {
    .nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 70vw;
        max-width: 320px;
        height: 100vh;
        background: linear-gradient(135deg, #ffb7c5 0%, #ff9a9e 100%);
        box-shadow: -2px 0 16px rgba(0,0,0,0.08);
        transform: translateX(100%);
        transition: transform 0.3s cubic-bezier(.4,0,.2,1);
        z-index: 1050;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding-top: 80px;
    }
    .nav.open {
        transform: translateX(0);
    }
    .nav ul {
        flex-direction: column;
        gap: 2rem;
        width: 100%;
        align-items: flex-start;
        padding-left: 2rem;
    }
    .nav li {
        width: 100%;
    }
    .nav a {
        font-size: 1.2rem;
        color: #fff;
        width: 100%;
        display: block;
        padding: 0.5rem 0;
    }
    .header .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    .hamburger {
        display: flex;
    }
}

@media (max-width: 900px) {
    .nav {
        background: linear-gradient(135deg, #ffb7c5 0%, #ff9a9e 100%);
    }
}

@media (max-width: 480px) {
    .nav {
        width: 90vw;
        max-width: 100vw;
    }
}

body.menu-open {
    overflow: hidden;
}