/* home.css - ホームページ専用スタイル（UI改善版） */

/* ---------- ヒーローセクション ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 4rem 2rem;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(118, 75, 162, 0.05) 50%,
        rgba(255, 255, 255, 0) 100%);
}

.hero-pattern {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
                      radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 0.5rem 1.5rem;
    border-radius: 30px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.2;
    margin-bottom: 1.5rem;
    font-weight: 800;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.title-line {
    display: block;
}

.gradient-text {
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none;
}

.cta-button.primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.4);
}

.cta-button.secondary {
    background: white;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.cta-button.secondary:hover {
    background: rgba(102, 126, 234, 0.05);
    transform: translateY(-2px);
}

.cta-button.large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

.cta-arrow {
    transition: transform 0.3s;
}

.cta-button:hover .cta-arrow {
    transform: translateX(3px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* ---------- 共通セクションスタイル ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 5rem 0;
}

.section-header {
    margin-bottom: 3rem;
}

.section-header.center {
    text-align: center;
}

.section-tag {
    display: inline-block;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 0.375rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-tag.light {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-title.light {
    color: white;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-light);
    line-height: 1.8;
}

.section-description.light {
    color: rgba(255, 255, 255, 0.9);
}

/* ---------- 特徴セクション ---------- */
.features {
    background: var(--light-bg);
}

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

.feature-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card.highlighted {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.feature-icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-bg);
    border-radius: 20px;
    transition: all 0.3s;
}

.feature-card:hover .feature-icon-wrapper {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon {
    font-size: 2.5rem;
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-description {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s;
}

.feature-link:hover {
    gap: 0.75rem;
}

/* ---------- サービス紹介セクション ---------- */
.services {
    background: white;
}

.services-showcase {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
    align-items: center;
}

.service-preview {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.service-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.preview-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 2rem;
    color: white;
}

.preview-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.preview-content p {
    margin-bottom: 1rem;
    opacity: 0.9;
}

.cta-button.white {
    background: white;
    color: var(--primary-color);
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.service-item {
    background: var(--light-bg);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.service-item:hover,
.service-item.active {
    background: white;
    border-color: var(--primary-color);
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.service-item-icon {
    font-size: 2rem;
    min-width: 50px;
}

.service-item-content {
    flex: 1;
}

.service-item-content h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
    color: var(--text-dark);
}

.service-item-content p {
    font-size: 0.875rem;
    color: var(--text-light);
}

.service-item-arrow {
    font-size: 1.25rem;
    color: var(--primary-color);
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s;
}

.service-item:hover .service-item-arrow,
.service-item.active .service-item-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* ---------- 学習ステップ ---------- */
.learning-path {
    background: var(--light-bg);
}

.steps-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.step-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
}

.step-marker {
    position: relative;
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    z-index: 1;
}

.step-number {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.step-content {
    flex: 1;
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.step-content p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 0.75rem;
}

.step-duration {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 600;
}

/* ---------- AIセクション ---------- */
.ai-showcase {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    position: relative;
    overflow: hidden;
}

.ai-showcase::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.ai-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.ai-features {
    margin: 2rem 0;
}

.ai-feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.ai-feature-icon {
    font-size: 2rem;
    min-width: 50px;
}

.ai-feature-text h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.ai-feature-text p {
    font-size: 0.875rem;
    opacity: 0.9;
}

.cta-button.white {
    background: white;
    color: var(--primary-color);
}

.cta-button.white:hover {
    background: rgba(255,255,255,0.9);
}

.ai-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ai-demo-screen {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 1rem;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    width: 100%;
    max-width: 400px;
}

.demo-header {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.demo-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
}

.demo-content {
    background: rgba(0,0,0,0.2);
    border-radius: 12px;
    padding: 2rem;
}

.demo-chart {
    height: 150px;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.1), transparent);
    margin-bottom: 2rem;
    border-radius: 8px;
}

.demo-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.demo-stat {
    text-align: center;
    padding: 1rem;
    background: rgba(255,255,255,0.1);
    border-radius: 8px;
}

.demo-stat .stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.demo-stat .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

/* ---------- 価格プレビュー ---------- */
.pricing-preview {
    background: white;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card-preview {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    position: relative;
    transition: all 0.3s;
}

.pricing-card-preview:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.pricing-card-preview.featured {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.375rem 1.5rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.plan-price {
    margin-bottom: 2rem;
}

.currency {
    font-size: 1.5rem;
    color: var(--text-light);
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.period {
    font-size: 1rem;
    color: var(--text-light);
}

.plan-features {
    list-style: none;
    margin-bottom: 2rem;
}

.plan-features li {
    padding: 0.75rem 0;
    color: var(--text-light);
    position: relative;
    padding-left: 1.5rem;
}

.plan-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

.cta-button.outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.cta-button.outline:hover {
    background: var(--primary-color);
    color: white;
}

/* ---------- 市場情報 ---------- */
.market-info {
    background: var(--light-bg);
}

.market-ticker-wrapper {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.05);
}

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

.ticker-item {
    padding: 1.5rem;
    background: var(--light-bg);
    border-radius: 16px;
    transition: all 0.3s;
}

.ticker-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.ticker-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.ticker-symbol {
    font-weight: 600;
    color: var(--text-dark);
}

.ticker-market {
    font-size: 0.75rem;
    color: var(--text-light);
}

.ticker-price {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.ticker-change {
    display: flex;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.ticker-change.positive {
    color: var(--secondary-color);
}

.ticker-change.negative {
    color: var(--danger-color);
}

.ticker-chart.mini {
    height: 50px;
    margin-top: 1rem;
    background: linear-gradient(to right, var(--border-color), var(--primary-color), var(--border-color));
    opacity: 0.2;
    border-radius: 4px;
}

.disclaimer {
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: 2rem;
}

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

/* ---------- レスポンシブ ---------- */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 2rem;
    }
    
    .features-grid,
    .pricing-cards,
    .ticker-items {
        grid-template-columns: 1fr;
    }
    
    .services-showcase {
        grid-template-columns: 1fr;
    }
    
    .ai-content {
        grid-template-columns: 1fr;
    }
    
    .timeline-line {
        display: none;
    }
    
    .step-item {
        flex-direction: column;
        align-items: center;
    }
}