/* リセットCSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基本設定 */
body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* ヘッダー */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-brand h1 {
    color: #6366f1;
    font-size: 2rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #6366f1;
}

/* ヒーローセクション */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.hero-image {
    position: relative;
    z-index: 2;
    margin-bottom: 3rem;
    width: 100%;
    display: flex;
    justify-content: center;
}

.header-image {
    width: 50%;
    height: auto;
    border-radius: 6px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    object-fit: cover;
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #fff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
    text-align: center;
    width: max-content;
    max-width: 95%;
    overflow: hidden;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: #ff6b6b;
    color: white;
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
}

.btn-primary:hover {
    background: #ff5252;
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(255, 107, 107, 0.6);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #6366f1;
    transform: translateY(-2px);
}

/* 機能セクション */
.features {
    padding: 100px 0;
    background: #f8fafc;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1e293b;
}

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

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

.feature-card p {
    color: #64748b;
    line-height: 1.7;
}

/* 統計セクション */
.stats {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, #fff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* お客様の声 */
.testimonials {
    padding: 100px 0;
    background: white;
}

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

.testimonial-card {
    background: #f8fafc;
    padding: 2.5rem;
    border-radius: 20px;
    border-left: 4px solid #6366f1;
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.testimonial-content {
    margin-bottom: 1.5rem;
}

.testimonial-content p {
    font-style: italic;
    color: #475569;
    font-size: 1.1rem;
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h4 {
    color: #1e293b;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.author-info span {
    color: #64748b;
    font-size: 0.9rem;
}

/* ダウンロードセクション */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    text-align: center;
}

.download-subtitle {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.download-btn {
    transition: all 0.3s ease;
    display: block;
}

.download-btn:hover {
    transform: translateY(-5px);
}

.download-btn img {
    height: 60px;
    filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.3));
    max-width: 180px;
    object-fit: contain;
}

/* Google Play バッジの高さ調整 */
.android-btn img {
    height: 60px !important;
    width: auto;
}

/* Windows Store バッジのフォールバック */
.windows-btn img {
    background-color: #0078d4;
    color: white;
    padding: 8px 16px;
    border-radius: 6px;
    min-height: 60px;
    min-width: 180px;
}

/* カスタムストアバッジ */
.custom-store-badge {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0078d4, #106ebe);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    height: 60px;
    min-width: 180px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.windows-btn {
    text-decoration: none;
}

.windows-btn:hover {
    text-decoration: none;
}

.custom-store-badge:hover {
    background: linear-gradient(135deg, #106ebe, #005a9e);
    transform: translateY(-2px);
}

.store-icon {
    font-size: 24px;
    margin-right: 12px;
}

.store-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-decoration: none;
}

.store-action {
    font-size: 11px;
    opacity: 0.8;
    line-height: 1;
    text-decoration: none;
}

.store-name {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
}

/* 画像が読み込まれない場合のフォールバック */
.windows-btn img::after {
    content: "Microsoft Store で入手";
    display: block;
    color: white;
    font-weight: bold;
    text-align: center;
    line-height: 44px;
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.download-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.download-info i {
    color: #4ade80;
}

/* フッター */
.footer {
    background: #1e293b;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #6366f1;
}

.footer-section p {
    color: #94a3b8;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #6366f1;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #334155;
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #6366f1;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #334155;
    color: #94a3b8;
}

/* レスポンシブデザイン */
@media (max-width: 1024px) {
    .hero-title {
        font-size: clamp(2.5rem, 4vw, 3.5rem);
        white-space: nowrap;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: clamp(1.8rem, 4vw, 2.5rem);
        white-space: normal;
        max-width: 95%;
        line-height: 1.2;
        text-align: center;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .header-image {
        border-radius: 6px;
        width: 60%;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-info {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-image {
        margin-bottom: 3rem;
        margin-top: -23px;
    }
    
    .header-image {
        border-radius: 6px;
        width: 100%;
    }
    
    .feature-card,
    .testimonial-card {
        padding: 1.5rem;
    }
    
    .hero-title {
        font-size: clamp(1.5rem, 3.5vw, 2rem);
        white-space: normal;
        max-width: 95%;
        line-height: 1.2;
        text-align: center;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.testimonial-card {
    animation: fadeInUp 0.6s ease-out;
}

/* スクロールアニメーション */
html {
    scroll-behavior: smooth;
}