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

:root {
    /* Japanese Modern Color Palette */
    --color-sumi: #2C2C2C; /* 墨色 - Charcoal */
    --color-ai: #1E3A8A; /* 藍色 - Indigo */
    --color-kohaku: #F59E0B; /* 琥珀 - Amber */
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* Typography */
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing System (8px base) */
    --spacing-1: 0.5rem; /* 8px */
    --spacing-2: 1rem; /* 16px */
    --spacing-3: 1.5rem; /* 24px */
    --spacing-4: 2rem; /* 32px */
    --spacing-5: 2.5rem; /* 40px */
    --spacing-6: 3rem; /* 48px */
    --spacing-8: 4rem; /* 64px */
    --spacing-10: 5rem; /* 80px */
    --spacing-12: 6rem; /* 96px */
    --spacing-16: 8rem; /* 128px */
    
    /* Layout */
    --max-width: 1200px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--color-sumi);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-3);
}

/* Centered Content */
.centered-content {
    text-align: center;
}

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

.centered-content .about-grid,
.centered-content .services-grid,
.centered-content .products-grid,
.centered-content .benefits-grid,
.centered-content .testimonials-grid {
    text-align: center;
}

.centered-content .process-steps {
    text-align: center;
}

.centered-content .feature-main {
    text-align: center;
}

/* Header */
.header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--spacing-3) 0;
}

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

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.logo-svg {
    flex-shrink: 0;
}

.brand-name {
    display: flex;
    flex-direction: column;
}

.brand-main {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-sumi);
    line-height: 1.2;
}

.brand-sub {
    font-size: 0.75rem;
    font-weight: var(--font-weight-regular);
    color: var(--color-gray-600);
    line-height: 1.2;
}

.nav {
    display: none;
}

.nav a {
    color: var(--color-sumi);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--border-radius);
    transition: all 0.2s ease-in-out;
}

.nav a:hover {
    color: var(--color-ai);
    background-color: var(--color-gray-50);
}

/* Hero Section */
.hero {
    padding: var(--spacing-12) 0 var(--spacing-10);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.hero-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
    align-items: center;
}

.hero-content {
    text-align: center;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--color-sumi);
    margin-bottom: var(--spacing-4);
}

.accent-text {
    color: var(--color-ai);
}

.hero-description {
    font-size: 1.125rem;
    font-weight: var(--font-weight-regular);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-6);
    line-height: 1.6;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    background-color: var(--color-ai);
    color: var(--color-white);
    padding: var(--spacing-3) var(--spacing-5);
    border: none;
    border-radius: var(--border-radius-lg);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    background-color: #1E40AF;
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.cta-button.large {
    padding: var(--spacing-4) var(--spacing-6);
    font-size: 1.125rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

.image-placeholder {
    width: 100%;
    max-width: 400px;
    height: 250px;
    background-color: var(--color-gray-100);
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
    font-weight: var(--font-weight-medium);
    text-align: center;
    padding: var(--spacing-2);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.section-header h2 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-sumi);
    margin-bottom: var(--spacing-2);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    font-weight: var(--font-weight-regular);
}

/* About Section */
.about {
    padding: var(--spacing-10) 0;
    background-color: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.about-item {
    text-align: center;
    padding: var(--spacing-4);
}

.about-icon {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-3);
    color: var(--color-ai);
}

.about-item h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sumi);
    margin-bottom: var(--spacing-2);
}

.about-item p {
    color: var(--color-gray-700);
    line-height: 1.6;
}

/* Services Section */
.services {
    padding: var(--spacing-10) 0;
    background-color: var(--color-gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
}

.service-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-5);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    text-align: center;
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.service-icon {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-3);
    color: var(--color-ai);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sumi);
    margin-bottom: var(--spacing-2);
}

.service-card p {
    color: var(--color-gray-700);
    line-height: 1.6;
}

/* Products Section */
.products {
    padding: var(--spacing-10) 0;
    background-color: var(--color-white);
}

.products-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.product-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.product-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.product-image {
    width: 100%;
    height: 200px;
    background-color: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-img {
    transform: scale(1.05);
}

.product-image .image-placeholder {
    color: var(--color-gray-500);
    font-weight: var(--font-weight-medium);
    max-width: none;
    height: auto;
    border: none;
    background: none;
}

.product-info {
    padding: var(--spacing-4);
}

.product-info h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sumi);
    margin-bottom: var(--spacing-2);
}

.product-info p {
    color: var(--color-gray-700);
    line-height: 1.6;
    margin-bottom: var(--spacing-3);
}

.product-price {
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-ai);
    margin-bottom: var(--spacing-3);
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-4);
}

.feature-tag {
    background-color: var(--color-kohaku);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: var(--font-weight-medium);
    padding: 0.25rem var(--spacing-1);
    border-radius: var(--border-radius);
}

.product-cta {
    width: 100%;
    background-color: var(--color-ai);
    color: var(--color-white);
    padding: var(--spacing-2) var(--spacing-3);
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.product-cta:hover {
    background-color: #1E40AF;
}

.product-cta.secondary {
    background-color: var(--color-kohaku);
}

.product-cta.secondary:hover {
    background-color: #D97706;
}

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

.product-cta.outline:hover {
    background-color: var(--color-ai);
    color: var(--color-white);
}

/* Features Section */
.features {
    padding: var(--spacing-10) 0;
    background-color: var(--color-gray-50);
}

.feature-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
    align-items: center;
}

.feature-image {
    order: 2;
}

.feature-img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    object-fit: cover;
}

.content-img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    object-fit: cover;
}

.team-img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    object-fit: cover;
}

.feature-details {
    order: 1;
}

.feature-details h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sumi);
    margin-bottom: var(--spacing-3);
}

.feature-details p {
    color: var(--color-gray-700);
    line-height: 1.6;
    margin-bottom: var(--spacing-4);
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    color: var(--color-gray-700);
    padding: var(--spacing-1) 0;
    position: relative;
    padding-left: var(--spacing-4);
}

.feature-list li:before {
    content: "•";
    color: var(--color-ai);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* Process Section */
.process {
    padding: var(--spacing-10) 0;
    background-color: var(--color-white);
}

.process-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-4);
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--color-ai);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-3);
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sumi);
    margin-bottom: var(--spacing-2);
}

.step-content p {
    color: var(--color-gray-700);
    line-height: 1.6;
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-10) 0;
    background-color: var(--color-gray-50);
}

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.benefit-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-5);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.benefit-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.benefit-number {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-kohaku);
    margin-bottom: var(--spacing-2);
}

.benefit-card h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sumi);
    margin-bottom: var(--spacing-2);
}

.benefit-card p {
    color: var(--color-gray-700);
    line-height: 1.6;
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-10) 0;
    background-color: var(--color-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.testimonial-card {
    background-color: var(--color-gray-50);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-5);
    border-left: 4px solid var(--color-kohaku);
}

.testimonial-content {
    margin-bottom: var(--spacing-4);
}

.testimonial-content p {
    color: var(--color-gray-700);
    line-height: 1.6;
    font-style: italic;
}

.author-info strong {
    color: var(--color-sumi);
    font-weight: var(--font-weight-semibold);
}

.author-info span {
    color: var(--color-gray-600);
    font-size: 0.875rem;
    display: block;
    margin-top: var(--spacing-1);
}

/* Contact Section */
.contact {
    padding: var(--spacing-10) 0;
    background-color: var(--color-gray-50);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    color: var(--color-ai);
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.contact-details h4 {
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sumi);
    margin-bottom: 0.25rem;
}

.contact-details p {
    color: var(--color-gray-700);
    line-height: 1.4;
}

.contact-cta {
    text-align: center;
    padding: var(--spacing-6);
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-cta h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sumi);
    margin-bottom: var(--spacing-2);
}

.contact-cta p {
    color: var(--color-gray-700);
    line-height: 1.6;
    margin-bottom: var(--spacing-4);
}

/* Footer */
.footer {
    background-color: var(--color-sumi);
    color: var(--color-white);
    padding: var(--spacing-8) 0 var(--spacing-4);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-6);
    align-items: start;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.footer-brand {
    text-align: left;
}

.footer-brand .logo-container {
    justify-content: flex-start;
    margin-bottom: var(--spacing-2);
}

.footer-brand .brand-main {
    color: var(--color-white);
}

.footer-brand p {
    color: var(--color-gray-300);
    font-size: 0.875rem;
    line-height: 1.5;
}

.footer-contact h4 {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--spacing-2);
}

.footer-contact p {
    color: var(--color-gray-300);
    font-size: 0.875rem;
    line-height: 1.4;
    margin-bottom: var(--spacing-1);
}

.footer-links {
    text-align: left;
}

.footer-links-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--spacing-3);
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-column a {
    color: var(--color-gray-300);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-column a:hover {
    color: var(--color-kohaku);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-gray-700);
}

.footer-bottom p {
    color: var(--color-gray-400);
    font-size: 0.875rem;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3);
}

.modal-content {
    background-color: var(--color-white);
    border-radius: var(--border-radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--color-gray-200);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sumi);
}

.close-button {
    background: none;
    border: none;
    color: var(--color-gray-500);
    cursor: pointer;
    padding: var(--spacing-1);
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

.close-button:hover {
    color: var(--color-gray-700);
    background-color: var(--color-gray-100);
}

.modal-body {
    padding: var(--spacing-4);
}

/* Form Styles */
.order-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-sumi);
    margin-bottom: var(--spacing-1);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-2);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-ai);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-actions {
    margin-top: var(--spacing-2);
}

/* Responsive Design */
@media (min-width: 640px) {
    .nav {
        display: block;
    }
    
    .hero-layout {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-8);
    }
    
    .hero-content {
        text-align: left;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .about-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: var(--spacing-8);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-6);
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: var(--spacing-6);
    }
    
    .feature-main {
        grid-template-columns: 1fr 1fr;
    }
    
    .feature-image {
        order: 1;
    }
    
    .feature-details {
        order: 2;
    }
    
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-10);
        align-items: start;
    }
    
    .footer-content {
        grid-template-columns: 1fr auto;
        gap: var(--spacing-10);
    }
    
    .footer-main {
        grid-template-columns: 2fr 1fr;
        gap: var(--spacing-8);
    }
    
    .footer-links-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-6);
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .process-steps {
        grid-template-columns: repeat(4, 1fr);
    }

    /* Maintain centered content for larger screens */
    .centered-content .hero-content {
        text-align: center;
    }
}

/* High Contrast and Accessibility */
@media (prefers-contrast: high) {
    :root {
        --color-gray-500: #525252;
        --color-gray-600: #404040;
    }
}

/* Focus Styles for Accessibility */
button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--color-ai);
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}