/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

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

/* Header */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2c3e50;
    margin: 0;
}

.logo-subtitle {
    font-size: 0.9rem;
    color: #7f8c8d;
    font-weight: 300;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

.nav-menu a:hover {
    color: #3498db;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 140px 20px 80px;
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.8;
}

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

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background-color: #fff;
    color: #667eea;
}

.btn-primary:hover {
    background-color: #f8f9fa;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: #fff;
    color: #667eea;
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-alt {
    background-color: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
    font-weight: 600;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: #555;
    line-height: 1.8;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.info-table th,
.info-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.info-table th {
    background-color: #667eea;
    color: white;
    font-weight: 600;
    width: 30%;
}

.info-table td {
    color: #555;
}

.info-table tr:last-child th,
.info-table tr:last-child td {
    border-bottom: none;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: #fff;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.service-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.7;
    text-align: left;
}

.service-features {
    list-style: none;
    text-align: left;
}

.service-features li {
    padding: 0.5rem 0;
    color: #555;
    border-bottom: 1px solid #eee;
    position: relative;
    padding-left: 1.5rem;
}

.service-features li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 0;
}

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

/* Portfolio Section */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    background-color: #fff;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.portfolio-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.portfolio-item h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.portfolio-url {
    margin-bottom: 1rem;
}

.portfolio-url a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.portfolio-url a:hover {
    color: #764ba2;
    text-decoration: underline;
}

.portfolio-item p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.7;
    text-align: left;
}

.portfolio-tech {
    list-style: none;
    text-align: left;
}

.portfolio-tech li {
    padding: 0.5rem 0;
    color: #555;
    border-bottom: 1px solid #eee;
    position: relative;
    padding-left: 1.5rem;
}

.portfolio-tech li:before {
    content: "•";
    color: #667eea;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.portfolio-tech li:last-child {
    border-bottom: none;
}

/* Contact Section */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-text {
    margin-bottom: 3rem;
}

.contact-text p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
}

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

.contact-item {
    background-color: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.contact-item h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.contact-item p {
    color: #666;
    line-height: 1.6;
}

/* Footer */
.footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 2rem 0;
}

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

.footer-logo h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-subtitle {
    opacity: 0.8;
    font-size: 0.9rem;
}

.footer-info p {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 15px;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 300px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        padding: 2rem;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-item {
        padding: 2rem;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 120px 15px 60px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .nav-container {
        height: auto;
        padding: 1rem 15px;
        flex-direction: column;
        gap: 1rem;
    }
    
    .header {
        position: relative;
    }
    
    .hero {
        padding: 80px 15px 60px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card {
    animation: fadeIn 0.6s ease-out;
}

/* Focus States for Accessibility */
.btn-primary:focus,
.btn-secondary:focus,
.nav-menu a:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Legal Pages Styles */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h2 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin: 2rem 0 1rem;
    font-weight: 600;
}

.legal-content p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.legal-content ul,
.legal-content ol {
    margin: 1rem 0 1.5rem 2rem;
    color: #555;
    line-height: 1.8;
}

.legal-content li {
    margin-bottom: 0.5rem;
}

.legal-date {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    text-align: right;
}

.legal-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
    text-align: center;
}

.language-switch {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 1rem;
    display: inline-block;
}

.language-switch:hover {
    text-decoration: underline;
}

.back-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    text-decoration: underline;
}

/* Footer Links */
.footer-links {
    margin-top: 0.5rem;
}

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

.footer-links a:hover {
    opacity: 1;
}

.footer-links .separator {
    margin: 0 0.5rem;
    opacity: 0.5;
}