/*
Theme Name: Lightning Child - BoKamoso
Description: BoKamoso Custom Child Theme for Lightning
Author: BoKamoso Team
Template: lightning



Version: 1.0.0
*/

/* CSS変数の定義 */



:root {
    --primary-color: #00d4aa;
    --secondary-color: #7c3aed;
    --accent-color: #f59e0b;
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;






    --gradient-primary: linear-gradient(135deg, #00d4aa 0%, #7c3aed 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);


}


/* 基本スタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--light-bg);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}


/* 言語切り替え */
.language-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 25px;
    padding: 6px 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    margin: 0;
    line-height: 1;
    transform: translateY(-8px);
}

.language-switcher button {
    background: none;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;

    transition: all 0.3s ease;
    font-size: 14px;
}

.language-switcher button.active {
    background: var(--gradient-primary);
    color: white;
}

.language-switcher button:not(.active):hover {
    background: rgba(0, 212, 170, 0.1);
    color: var(--primary-color);
}

/* ドロップダウン用スタイル */
.language-switcher .lang-toggle {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 8px 14px;
    border-radius: 22px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.language-switcher .lang-dropdown {
    display: none;
    position: absolute;
    right: 0;
    margin-top: 8px;
    min-width: 160px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    border-radius: 10px;
    padding: 6px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    list-style: none;
}

/* ホバー/フォーカス時に開く */
.language-switcher:hover .lang-dropdown,
.language-switcher:focus-within .lang-dropdown {
    display: block;
}

.language-switcher .lang-dropdown .lang-option {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
}

.language-switcher .lang-dropdown .lang-option:hover {
    background: rgba(0, 212, 170, 0.1);
    color: var(--primary-color);
}

/* ヘッダー */
.site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
    padding: 20px 0;
    transition: all 0.3s ease;
    height: 80px;
    display: flex;
}

/* スクロール時に背景を少し濃く */
.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
}

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

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    height: 100%;
    gap: 20px;
}




.site-name {
    display: flex;
    align-items: center;
    gap: 15px;
}

.site-logo {
    height: 40px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.site-name a {
    font-size: 36px;
    font-weight: 700;
    text-decoration: none;
    padding: 0;
    margin: 0;
    line-height: 1;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ナビゲーション */













.main-navigation ul {
    display: flex;
    list-style: none;
    gap: 30px;
    transform: translateY(-4px);


}

.main-navigation a {
    text-decoration: none;
    color: #4f46e5;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0;
    margin: 0;
    border-bottom: 2px solid transparent;
    line-height: 1;
}

.main-navigation a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
    border-bottom-color: var(--primary-color);
    text-shadow: 0 2px 8px rgba(0, 212, 170, 0.3);
}

/* モバイルメニュー */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
    align-self: baseline;
    transform: translateY(-22px);




























































































    display: none;
































































































    flex-direction: column;

    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #4B0082 !important;
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
    background: #4B0082 !important;
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    background: #4B0082 !important;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
    background: #4B0082 !important;
}

/* ヒーローセクション */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
    padding-top: 100px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: -40%;
    left: -40%;
    width: 180%;
    height: 180%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: float 15s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 2;
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: slideInUp 1s ease-out;
    border: none !important;
    border-top: none !important;
    border-bottom: none !important;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 30px;
    opacity: 0.9;
    animation: slideInUp 1s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.5rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.8;
    animation: slideInUp 1s ease-out 0.4s both;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cta-button {
    display: inline-block;
    padding: 18px 40px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    animation: slideInUp 1s ease-out 0.6s both;
}

.cta-button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* アプリケーションセクション */
.apps-section {
    color: white;
    position: relative;
    z-index: 2;
}

.section-title {
    text-align: center;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: #00d4aa;
    text-shadow: 0 2px 10px rgba(0, 212, 170, 0.3);
}

/* セクションタイトルの下線を削除 */
.section-title::after {
    display: none;
}

.app-grid {



    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.app-card {
    background: rgba(255, 255, 255, 0.2);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 800px;
    margin: 0 auto;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.app-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.app-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    display: block;
}

.app-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: white;
}

.app-card p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 25px;
    line-height: 1.6;
}

.app-download-btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.app-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 170, 0.3);
}

/* ポリシーセクション */
.policy-section {
    color: white;
    position: relative;
    z-index: 2;
}

.policy-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.policy-card {
    background: rgba(255, 255, 255, 0.2);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    max-width: 800px;
    margin: 0 auto;
}

.policy-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.policy-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.policy-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.policy-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: white;
    border: none !important;
    border-bottom: none !important;
    border-top: none !important;
    border-left: none !important;
    border-right: none !important;
    text-decoration: none !important;
    outline: none !important;
    box-shadow: none !important;
    background: none !important;
    background-image: none !important;
    background-color: transparent !important;
}

/* WordPressテーマの下線スタイルを無効化 */
.policy-card h3::before,
.policy-card h3::after {
    display: none !important;
    content: none !important;
}

.policy-card p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin-bottom: 15px;
}

.policy-text {
    text-align: left;
}

.policy-text a {
    color: #00d4aa;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.policy-text a:hover {
    color: #7c3aed;
    text-decoration: underline;
}

/* お問い合わせセクション */
.contact-section {
    position: relative;
    z-index: 2;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

/* お問い合わせセクションのタイトルを統一 */
.contact-section .section-title {
    color: #00d4aa;
    text-shadow: 0 2px 10px rgba(0, 212, 170, 0.3);
}

.contact-content {
    text-align: center;
    color: white;
    position: relative;
    z-index: 2;
}

.contact-description {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.8;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.contact-link:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.contact-icon {
    font-size: 1.2rem;
}

/* ページレイアウト */
.page-layout {
    min-height: calc(100vh - 80px - 200px); /* ヘッダーとフッターの高さを引く */
    margin-top: 80px; /* ヘッダーの高さ分 */
    display: flex;
    flex-direction: column;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.page-layout::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.page-layout::after {
    content: '';
    position: absolute;
    top: -40%;
    left: -40%;
    width: 180%;
    height: 180%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: lightReflection 15s ease-in-out infinite;
}

/* タイトルヘッダー（上段） */
.title-header {
    padding: 40px 0;
    height: 120px;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 2;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    text-align: center;
    margin: 0;
    position: relative;
    z-index: 2;
    text-shadow: 0 2px 10px rgba(0, 212, 170, 0.3);
}

/* メインコンテンツ（下段） */
.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0px 0;
    min-height: calc(100vh - 80px - 120px - 200px); /* ヘッダー、タイトルヘッダー、フッターの高さを引く */
    position: relative;
    z-index: 2;
    transform: translateY(-60px);
}

/* フッター */
.site-footer {
    background: var(--dark-bg);
    color: white;
    padding: 30px 0 20px;
    position: relative;
    height: 120px;
    margin-top: auto;
}

@media (max-width: 768px) {
    .site-footer {
        height: 140px;
        padding: 20px 0 15px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 10px;
        margin-bottom: 10px;
    }
    
    .footer-content p {
        font-size: 0.9rem;
    }
    
    .footer-links {
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .site-footer {
        height: 120px;
        padding: 15px 0 10px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 8px;
        margin-bottom: 8px;
    }
    
    .footer-content p {
        font-size: 0.8rem;
    }
    
    .footer-links {
        gap: 8px;
    }
    
    .footer-links a {
        font-size: 0.75rem;
    }
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.footer-content p {
    font-size: 1rem;
    margin-bottom: 0;
    opacity: 0.9;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 0;
}



.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {

    opacity: 1;
}

.copyright {
    text-align: center;
    opacity: 0.6;
    font-size: 0.9rem;
}

/* 自然要素のアニメーション */
.nature-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    overflow: hidden;
    z-index: 1;
}

/* Homeページ専用スタイル */
.home-section {
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
    min-height: calc(100vh - 80px - 200px); /* ヘッダーとフッターの高さを引く */
    margin-top: 80px; /* ヘッダーの高さ分 */
    z-index: 0;
}

.home-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.home-section::after {
    content: '';
    position: absolute;
    top: -40%;
    left: -40%;
    width: 180%;
    height: 180%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: lightReflection 15s ease-in-out infinite;
}

@keyframes lightReflection {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg) scale(1);
        opacity: 0.3;
    }
    25% { 
        transform: translateY(-20px) rotate(90deg) scale(1.1);
        opacity: 0.5;
    }
    50% { 
        transform: translateY(-40px) rotate(180deg) scale(1.2);
        opacity: 0.4;
    }
    75% { 
        transform: translateY(-20px) rotate(270deg) scale(1.1);
        opacity: 0.5;
    }
}

.leaf {
    position: absolute;
    width: 30px;
    height: 30px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50% 0 50% 0;
    animation: leafFall 4s linear infinite;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

@keyframes leafFall {
    0% {
        transform: translateY(-100vh) rotate(0deg) translateX(0px);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    50% {
        transform: translateY(-50vh) rotate(180deg) translateX(20px);
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg) translateX(-20px);
        opacity: 0;
    }
}

/* レスポンシブデザイン */
@media (max-width: 1200px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .site-header {
        height: 60px;
        padding: 15px 0;
    }
    
    .page-layout {
        min-height: calc(100vh - 60px - 120px);
    }
    
    .title-header {
        height: 60px;
        padding: 15px 0;
    }
    
    .page-title {
        font-size: 1.8rem;
    }
    
    .main-content {
        min-height: calc(100vh - 60px - 60px - 120px);
        padding: 20px 0;
    }
    
    .home-section {
        min-height: calc(100vh - 60px - 120px);
    }
    
    .hero-content {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1.2rem;
        padding: 0 10px;
    }
    
    .cta-button {
        padding: 15px 30px;
        font-size: 1rem;
    }
    
    .app-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-top: 40px;
    }
    
    .app-card {
        padding: 30px 20px;
        width: auto;
        max-width: 100%;
    }
    
    .section-title {
        font-size: 2.5rem;
        margin-bottom: 40px;
    }
    
    .main-navigation { 
        display: none; 
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }
    .main-navigation.mobile-active {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        display: flex;
        align-items: flex-start;
        justify-content: flex-start;
        z-index: 1000;
        padding: 80px 0 0 0;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transform: translateX(0);
        transition: transform 0.3s ease;
    }
    .main-navigation.mobile-active ul { 
        flex-direction: column; 
        text-align: left; 
        gap: 0; 
        width: 100%;
        padding: 0;
        margin: 0;
    }
    .main-navigation.mobile-active li {
        width: 100%;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    }
    .main-navigation.mobile-active a { 
        font-size: 1.2rem; 
        color: #4B0082; 
        padding: 20px 30px;
        display: block;
        width: 100%;
        transition: background-color 0.3s ease;
    }
    .main-navigation.mobile-active a:hover {
        background-color: rgba(75, 0, 130, 0.1);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .language-switcher {
        padding: 6px;
    }
    
    .language-switcher button {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .site-name a {
        font-size: 24px;
        white-space: nowrap;
    }
    
    .site-logo {
        height: 32px;
    }
    
    .policy-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .policy-card {
        padding: 30px 20px;
    }
    
    .contact-links {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .site-header {
        height: 50px;
        padding: 10px 0;
    }
    
    .page-layout {
        min-height: calc(100vh - 50px - 100px);
    }
    
    .title-header {
        height: 50px;
        padding: 10px 0;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .main-content {
        min-height: calc(100vh - 50px - 50px - 100px);
        padding: 15px 0;
    }
    
    .home-section {
        min-height: calc(100vh - 50px - 100px);
    }
    
    .hero-content {
        padding: 0 10px;
    }
    
    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 25px;
    }
    
    .cta-button {
        padding: 12px 25px;
        font-size: 0.9rem;
    }
    
    .app-card {
        padding: 25px 15px;
        width: auto;
        max-width: 100%;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 15px;
    }
    
    .language-switcher {
        padding: 5px;
    }
    
    .language-switcher button {
        padding: 5px 10px;
        font-size: 11px;
    }
    
    .site-name a {
        font-size: 20px;
        white-space: nowrap;
    }
}

@media (max-width: 360px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .app-card {
        padding: 20px 10px;
        width: auto;
        max-width: 100%;
    }
}

/* 言語切り替えのアニメーション */
.fade-out {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.fade-in {
    opacity: 1;
    transition: opacity 0.3s ease;
}