/* ============================================
   奇想クラブ - メインスタイルシート
   アカデミック × 奇想的 × 宇宙的幻想
   ============================================ */

/* ============================================
   リセット & 基本設定
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg-dark: #0b0b0b;
    --color-text-primary: #f5e6c8;
    --color-text-secondary: #e0d4b8;
    --color-accent: #c9a961;
    --color-accent-bright: #e6d4a0;
    --color-glass-bg: rgba(0, 0, 0, 0.5);
    --color-glass-border: rgba(191, 168, 106, 0.3);
    --font-heading: 'Shippori Mincho', serif;
    --font-body: 'Noto Sans JP', sans-serif;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    color: var(--color-text-primary);
    background: url('background1.png') no-repeat center center fixed;
    background-size: cover;
    background-color: var(--color-bg-dark);
    line-height: 1.8;
    overflow-x: hidden;
}

/* ============================================
   星の背景アニメーション
   ============================================ */
@keyframes twinkle {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 1;
    }
}

@keyframes moveStars {
    from {
        transform: translateY(0px);
    }
    to {
        transform: translateY(-2000px);
    }
}

.stars,
.stars2,
.stars3 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 200%;
    pointer-events: none;
    z-index: 1;
}

.stars {
    background: transparent url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="2" height="2"><circle cx="1" cy="1" r="1" fill="%23fff"/></svg>') repeat;
    background-size: 200px 200px;
    animation: moveStars 200s linear infinite, twinkle 3s ease-in-out infinite;
    opacity: 0.15;
}

.stars2 {
    background: transparent url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="3" height="3"><circle cx="1.5" cy="1.5" r="1.5" fill="%238b7355"/></svg>') repeat;
    background-size: 300px 300px;
    animation: moveStars 300s linear infinite, twinkle 5s ease-in-out infinite;
    opacity: 0.12;
}

.stars3 {
    background: transparent url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="1.5" height="1.5"><circle cx="0.75" cy="0.75" r="0.75" fill="%23a0927d"/></svg>') repeat;
    background-size: 250px 250px;
    animation: moveStars 150s linear infinite, twinkle 4s ease-in-out infinite;
    opacity: 0.18;
}

/* ============================================
   メインコンテナ
   ============================================ */
.container {
    position: relative;
    z-index: 10;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   ヘッダー
   ============================================ */
.site-header {
    text-align: center;
    padding: 80px 0 40px;
    transition: all 0.3s ease;
}

.logo-container {
    margin-bottom: 30px;
    animation: fadeInDown 1s ease-out;
}

.logo {
    width: 180px;
    height: auto;
    filter: drop-shadow(0 0 20px rgba(191, 168, 106, 0.6));
    transition: all 0.3s ease;
}

.logo:hover {
    filter: drop-shadow(0 0 30px rgba(191, 168, 106, 0.9));
    transform: scale(1.05);
}

.site-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--color-text-primary);
    margin-bottom: 15px;
    letter-spacing: 0.15em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8), 0 0 20px rgba(191, 168, 106, 0.5);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.site-subtitle {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-accent);
    margin-bottom: 15px;
    letter-spacing: 0.1em;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.site-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 1s ease-out 0.6s both;
}

/* ============================================
   ナビゲーション
   ============================================ */
.main-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
    padding: 30px 0;
    margin-bottom: 60px;
    background: var(--color-glass-bg);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--color-glass-border);
    border-bottom: 1px solid var(--color-glass-border);
    animation: fadeIn 1s ease-out 0.8s both;
}

.nav-link {
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-accent);
    text-decoration: none;
    letter-spacing: 0.08em;
    padding: 8px 15px;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent-bright);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 100%;
}

.nav-link:hover {
    color: var(--color-accent-bright);
    text-shadow: 0 0 10px rgba(191, 168, 106, 0.5);
}

.nav-link.highlight {
    background: linear-gradient(135deg, rgba(191, 168, 106, 0.2), rgba(212, 188, 122, 0.2));
    border: 1px solid var(--color-accent);
    border-radius: 5px;
    padding: 8px 20px;
}

.nav-link.highlight:hover {
    background: linear-gradient(135deg, rgba(191, 168, 106, 0.3), rgba(212, 188, 122, 0.3));
    box-shadow: 0 0 20px rgba(191, 168, 106, 0.4);
}

/* ============================================
   メインコンテンツ
   ============================================ */
.main-content {
    min-height: 100vh;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    text-align: center;
    color: var(--color-accent-bright);
    margin-bottom: 50px;
    letter-spacing: 0.1em;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8), 0 0 15px rgba(191, 168, 106, 0.4);
}

/* ============================================
   投稿カード
   ============================================ */
.post-card {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 15px;
    padding: 35px;
    margin-bottom: 40px;
    transition: all 0.4s ease;
    opacity: 0.95;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.post-card:hover {
    background: rgba(0, 0, 0, 0.65);
    border-color: var(--color-accent);
    box-shadow: 0 10px 40px rgba(191, 168, 106, 0.3), 0 4px 20px rgba(0, 0, 0, 0.6);
    transform: translateY(-5px);
    opacity: 1;
}

.post-header {
    margin-bottom: 20px;
}

.post-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.post-meta {
    display: flex;
    gap: 20px;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

.post-author {
    color: var(--color-accent);
}

.post-date {
    opacity: 0.8;
}

.post-content {
    margin-bottom: 25px;
}

.post-excerpt {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

.post-tags {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.tag {
    display: inline-block;
    background: rgba(191, 168, 106, 0.15);
    border: 1px solid rgba(191, 168, 106, 0.4);
    color: var(--color-accent-bright);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
}

.tag:hover {
    background: rgba(191, 168, 106, 0.25);
    border-color: var(--color-accent-bright);
    box-shadow: 0 0 10px rgba(191, 168, 106, 0.3);
}

.read-more {
    display: inline-block;
    color: var(--color-accent-bright);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.05rem;
    padding: 10px 25px;
    border: 1px solid var(--color-accent);
    border-radius: 5px;
    transition: all 0.3s ease;
    letter-spacing: 0.05em;
}

.read-more:hover {
    background: rgba(191, 168, 106, 0.2);
    box-shadow: 0 0 15px rgba(191, 168, 106, 0.4);
    transform: translateX(5px);
}

/* ============================================
   もっと見るボタン
   ============================================ */
.load-more {
    text-align: center;
    margin: 60px 0;
}

.btn-more {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--color-accent-bright);
    text-decoration: none;
    padding: 15px 40px;
    border: 2px solid var(--color-accent);
    border-radius: 8px;
    background: rgba(191, 168, 106, 0.1);
    transition: all 0.3s ease;
    letter-spacing: 0.08em;
}

.btn-more:hover {
    background: rgba(191, 168, 106, 0.25);
    box-shadow: 0 0 25px rgba(191, 168, 106, 0.5);
    transform: scale(1.05);
}

/* ============================================
   ABOUTセクション
   ============================================ */
.about-section,
.contact-section {
    margin: 80px 0;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 2;
    margin-bottom: 20px;
}

.highlight-text {
    text-align: center;
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-accent-bright);
    margin-top: 30px;
    padding: 25px;
    border-top: 1px solid var(--color-glass-border);
    border-bottom: 1px solid var(--color-glass-border);
    font-style: italic;
    line-height: 1.8;
}

/* ============================================
   MEMBERSセクション
   ============================================ */
.members-section {
    margin: 80px 0;
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.member-card {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s ease;
    opacity: 0.9;
}

.member-card:hover {
    background: rgba(0, 0, 0, 0.5);
    border-color: var(--color-accent);
    box-shadow: 0 8px 30px rgba(191, 168, 106, 0.3);
    transform: translateY(-5px);
    opacity: 1;
}

.member-card h4 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-accent-bright);
    margin-bottom: 10px;
}

.member-title {
    font-size: 0.95rem;
    color: var(--color-accent);
    margin-bottom: 15px;
    font-weight: 500;
}

.member-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ============================================
   CONTACTセクション
   ============================================ */
.contact-content p {
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 20px;
}

.contact-info {
    margin: 30px 0;
    padding: 25px;
    background: rgba(191, 168, 106, 0.08);
    border-left: 3px solid var(--color-accent);
    border-radius: 5px;
}

.contact-info p {
    margin-bottom: 12px;
}

.contact-info strong {
    color: var(--color-accent-bright);
}

.note {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    font-style: italic;
    opacity: 0.8;
}

/* ============================================
   フッター
   ============================================ */
.site-footer {
    text-align: center;
    padding: 60px 20px 40px;
    margin-top: 100px;
    border-top: 1px solid var(--color-glass-border);
    background: var(--color-glass-bg);
    backdrop-filter: blur(8px);
}

.footer-content p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: 10px;
}

.footer-note {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    color: var(--color-accent);
    font-style: italic;
    margin-top: 15px;
}

/* ============================================
   アニメーション
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease-out both;
}

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }

/* ============================================
   レスポンシブデザイン
   ============================================ */
@media (max-width: 768px) {
    .site-title {
        font-size: 2.5rem;
    }
    
    .site-subtitle {
        font-size: 1.1rem;
    }
    
    .main-nav {
        gap: 15px;
        padding: 20px 10px;
    }
    
    .nav-link {
        font-size: 1rem;
        padding: 6px 12px;
    }
    
    .post-card {
        padding: 25px;
    }
    
    .post-title {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .members-grid {
        grid-template-columns: 1fr;
    }
    
    .logo {
        width: 140px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .site-title {
        font-size: 2rem;
    }
    
    .main-nav {
        flex-direction: column;
        gap: 10px;
    }
    
    .post-card {
        padding: 20px;
    }
    
    .post-meta {
        flex-direction: column;
        gap: 8px;
    }
}

/* ============================================
   スクロール時のロゴ固定（JavaScript連携）
   ============================================ */
.header-fixed .logo-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    background: rgba(11, 11, 11, 0.9);
    padding: 10px 20px;
    border-radius: 50px;
    border: 1px solid var(--color-glass-border);
    backdrop-filter: blur(10px);
}

.header-fixed .logo {
    width: 80px;
}

/* ============================================
   スポンサーページ専用スタイル
   ============================================ */

/* ヒーローセクション */
.sponsor-hero {
    margin: 40px 0 60px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: start;
}

.hero-text {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 15px;
    padding: 40px;
}

.hero-description {
    margin: 20px 0;
    line-height: 1.9;
    color: var(--color-text-secondary);
}

.cta-button {
    display: inline-block;
    margin-top: 30px;
    padding: 15px 40px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #d4a574 100%);
    color: #0b0b0b;
    text-decoration: none;
    font-weight: bold;
    border-radius: 30px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(191, 168, 106, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(191, 168, 106, 0.5);
}

.hero-visual {
    display: flex;
    align-items: center;
}

.worldview-card {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 15px;
    padding: 30px;
}

.worldview-card h3 {
    font-family: var(--font-heading);
    color: var(--color-accent-bright);
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.worldview-card ul {
    list-style: none;
    padding: 0;
}

.worldview-card li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: var(--color-text-secondary);
}

.worldview-card li:before {
    content: '✧';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* 世界観グリッド */
.worldview-section {
    margin: 60px 0;
}

.worldview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.worldview-item {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
}

.worldview-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 8px 25px rgba(191, 168, 106, 0.2);
}

.worldview-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 画像アイコン対応 */
.worldview-icon img {
    max-width: 60px;
    max-height: 60px;
    object-fit: contain;
}

/* 絵文字フォールバック非表示（画像がある場合） */
.worldview-icon:has(img) .emoji-fallback {
    display: none;
}

.worldview-item h3 {
    font-family: var(--font-heading);
    color: var(--color-accent-bright);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.worldview-item p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* 寄付プラン */
.donation-section {
    margin: 60px 0;
}

.section-description {
    text-align: center;
    color: var(--color-text-secondary);
    margin-top: 15px;
    font-size: 1.05rem;
}

.donation-tiers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.donation-tier {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border: 2px solid var(--color-glass-border);
    border-radius: 20px;
    padding: 35px 25px;
    text-align: center;
    position: relative;
    transition: all 0.3s;
}

.donation-tier:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(191, 168, 106, 0.3);
}

.donation-tier.featured {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, rgba(191, 168, 106, 0.1) 0%, rgba(0, 0, 0, 0.5) 100%);
}

.tier-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: #0b0b0b;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
}

.tier-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 画像アイコン対応 */
.tier-icon img {
    max-width: 60px;
    max-height: 60px;
    object-fit: contain;
}

/* 絵文字フォールバック非表示（画像がある場合） */
.tier-icon:has(img) .emoji-fallback {
    display: none;
}

.tier-name {
    font-family: var(--font-heading);
    color: var(--color-accent-bright);
    margin-bottom: 10px;
    font-size: 1.15rem;
}

.tier-price {
    font-size: 1.8rem;
    color: var(--color-accent);
    font-weight: bold;
    margin: 20px 0;
}

.tier-benefits {
    list-style: none;
    padding: 0;
    margin: 25px 0;
    text-align: left;
}

.tier-benefits li {
    padding: 8px 0;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.tier-button {
    width: 100%;
    padding: 12px 25px;
    background: var(--color-accent);
    color: #0b0b0b;
    border: none;
    border-radius: 25px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
}

.tier-button:hover {
    background: var(--color-accent-bright);
    transform: scale(1.05);
}

/* 法人スポンサーセクション */
.corporate-sponsor-section {
    margin: 80px 0;
}

.corporate-cta-box {
    background: linear-gradient(135deg, rgba(191, 168, 106, 0.15) 0%, rgba(0, 0, 0, 0.5) 100%);
    backdrop-filter: blur(10px);
    border: 2px solid var(--color-accent);
    border-radius: 20px;
    padding: 50px 40px;
    text-align: center;
    margin: 40px 0;
}

.corporate-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 画像アイコン対応 */
.corporate-icon img {
    max-width: 80px;
    max-height: 80px;
    object-fit: contain;
}

/* 絵文字フォールバック非表示（画像がある場合） */
.corporate-icon:has(img) .emoji-fallback {
    display: none;
}

.corporate-cta-box h3 {
    font-family: var(--font-heading);
    color: var(--color-accent-bright);
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.corporate-cta-box p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.corporate-cta-button {
    display: inline-block;
    padding: 18px 50px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #d4a574 100%);
    color: #0b0b0b;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    border-radius: 30px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(191, 168, 106, 0.4);
}

.corporate-cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(191, 168, 106, 0.6);
}

.corporate-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.feature-item {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 15px;
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 8px 25px rgba(191, 168, 106, 0.2);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 画像アイコン対応 */
.feature-icon img {
    max-width: 50px;
    max-height: 50px;
    object-fit: contain;
}

/* 絵文字フォールバック非表示（画像がある場合） */
.feature-icon:has(img) .emoji-fallback {
    display: none;
}

.feature-item h4 {
    font-family: var(--font-heading);
    color: var(--color-accent-bright);
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.feature-item p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* FAQ */
.faq-section {
    margin: 60px 0;
}

.faq-list {
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.faq-item {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 25px;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: 1.05rem;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
}

.faq-question:hover {
    color: var(--color-accent-bright);
}

.faq-icon {
    color: var(--color-accent);
    font-size: 0.9rem;
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 25px;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 25px 20px;
}

.faq-answer p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* お問い合わせフォーム */
.contact-section {
    margin: 80px 0;
}

.contact-forms {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 40px;
}

.contact-card {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 20px;
    padding: 40px;
}

.contact-card h3 {
    font-family: var(--font-heading);
    color: var(--color-accent-bright);
    font-size: 1.4rem;
    margin-bottom: 30px;
    text-align: center;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    color: var(--color-accent);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--color-glass-border);
    border-radius: 8px;
    color: var(--color-text-primary);
    font-size: 1rem;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 10px rgba(191, 168, 106, 0.2);
}

.form-group textarea {
    resize: vertical;
    font-family: var(--font-body);
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin: 0;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
    cursor: pointer;
}

.submit-button {
    padding: 15px 30px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #d4a574 100%);
    color: #0b0b0b;
    border: none;
    border-radius: 25px;
    font-size: 1.05rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(191, 168, 106, 0.4);
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.form-message {
    margin-top: 30px;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    font-weight: bold;
}

.form-message.success {
    background: rgba(76, 175, 80, 0.2);
    border: 1px solid rgba(76, 175, 80, 0.5);
    color: #a5d6a7;
}

.form-message.error {
    background: rgba(244, 67, 54, 0.2);
    border: 1px solid rgba(244, 67, 54, 0.5);
    color: #ef9a9a;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .worldview-grid {
        grid-template-columns: 1fr;
    }
    
    .donation-tiers {
        grid-template-columns: 1fr;
    }
    
    .corporate-features {
        grid-template-columns: 1fr;
    }
    
    .contact-forms {
        grid-template-columns: 1fr;
    }
    
    .hero-text,
    .worldview-card,
    .corporate-cta-box,
    .feature-item,
    .contact-card {
        padding: 25px;
    }
}