/* ヘッダー */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 20px 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::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 1440 320"><path fill="%23ffffff10" d="M0,192L48,197.3C96,203,192,213,288,229.3C384,245,480,267,576,250.7C672,235,768,181,864,181.3C960,181,1056,235,1152,234.7C1248,235,1344,181,1392,154.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    font-weight: bold;
    text-shadow: 0 2px 10px rgba(0,0,0,0.1);
    color: white;
}

.header-subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto 30px;
}

.header-cta {
    display: inline-block;
    background: white;
    color: #667eea;
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* セクション共通 */
section {
    padding: 80px 20px;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    text-align: center;
    color: #333;
    font-weight: bold;
}

.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 60px;
    font-size: 1.1rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* サービス概要 */
.overview {
    background: #f8f9fa;
}

.overview-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.overview-text {
    font-size: 1.15rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 40px;
}

.overview-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.overview-point {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    text-align: center;
}

.overview-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    display: block;
}

.overview-title {
    font-size: 1.1rem;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 10px;
}

.overview-desc {
    color: #666;
    font-size: 0.95rem;
}

/* サービス詳細 */
.services {
    background: white;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.service-header {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    padding: 30px;
    border-bottom: 2px solid #667eea30;
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    display: block;
}

.service-title {
    font-size: 1.3rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.service-body {
    padding: 30px;
}

.service-description {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #555;
    font-size: 0.95rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4CAF50;
    font-weight: bold;
}

/* 開発プロセス */
.process {
    background: #f8f9fa;
}

.process-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: #667eea30;
}

.process-item {
    display: flex;
    margin-bottom: 60px;
    align-items: center;
    position: relative;
}

.process-item:nth-child(even) {
    flex-direction: row-reverse;
}

.process-content {
    width: 45%;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.process-number {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
}

.process-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.process-description {
    color: #666;
    line-height: 1.6;
}

/* 技術スタック */
.tech-stack {
    background: white;
}

.tech-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.tech-category {
    text-align: center;
}

.tech-category-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 20px;
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.tech-item {
    background: #f8f9fa;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.95rem;
    color: #555;
    border: 1px solid #e0e0e0;
    transition: all 0.3s;
}

.tech-item:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

/* 料金プラン */
.pricing {
    background: #f8f9fa;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.pricing-card.featured {
    border: 2px solid #667eea;
    transform: scale(1.05);
}

.pricing-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

.pricing-title {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: white;
}

.pricing-price {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.pricing-price span {
    font-size: 1rem;
    font-weight: normal;
    opacity: 0.9;
}

.pricing-description {
    font-size: 0.95rem;
    opacity: 0.95;
}

.pricing-body {
    padding: 30px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
    color: #555;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-button {
    display: block;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

/* 実績 */
.portfolio {
    background: white;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.portfolio-item {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 30px;
    transition: transform 0.3s;
}

.portfolio-item:hover {
    transform: translateY(-5px);
}

.portfolio-industry {
    display: inline-block;
    background: #667eea20;
    color: #667eea;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 0.85rem;
    margin-bottom: 15px;
}

.portfolio-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
}

.portfolio-description {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.portfolio-tech-item {
    background: white;
    border: 1px solid #e0e0e0;
    padding: 5px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    color: #555;
}

/* FAQ */
.faq {
    background: #f8f9fa;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.faq-question {
    padding: 25px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.faq-question:hover {
    background: #f8f9fa;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: #667eea;
    transition: transform 0.3s;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

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

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

.faq-answer p {
    color: #666;
    line-height: 1.7;
}

/* CTA */
.cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 100px 20px;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: white;
}

.cta-text {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s;
}

.cta-button-primary {
    background: white;
    color: #667eea;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.cta-button-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

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

.cta-button-secondary:hover {
    background: white;
    color: #667eea;
}

/* レスポンシブ */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    .process-timeline::before {
        left: 30px;
    }

    .process-item,
    .process-item:nth-child(even) {
        flex-direction: column;
        align-items: flex-start;
    }

    .process-content {
        width: calc(100% - 60px);
        margin-left: 60px;
    }

    .process-number {
        left: 30px;
    }

    .pricing-card.featured {
        transform: scale(1);
    }
}