/* CSS Variables for Color Palette */
:root {
    --charcoal: #2D2D2D;
    --ivory: #F5F5F5;
    --copper: #C17B47;
    --indigo: #4A5568;
    --sakura: #E8B4B8;
    
    --text-primary: var(--charcoal);
    --text-secondary: #5A5A5A;
    --text-light: var(--ivory);
    --background: var(--ivory);
    --background-dark: var(--charcoal);
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    --border-radius: 8px;
    --shadow: 0 2px 12px rgba(45, 45, 45, 0.1);
    --shadow-hover: 0 4px 24px rgba(45, 45, 45, 0.15);
}

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

body {
    font-family: 'Inter', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
    font-weight: 300;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.25rem;
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: 1.5rem;
    font-weight: 500;
}

p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Header */
.header {
    background-color: var(--background);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(45, 45, 45, 0.1);
}

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

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

.logo {
    width: 40px;
    height: 40px;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

/* Hero Section */
.hero {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--ivory) 0%, rgba(232, 180, 184, 0.1) 100%);
}

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

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

.hero-content h1 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.hero-content p {
    margin-bottom: var(--spacing-xl);
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

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

.hero-image {
    width: 100%;
    max-width: 500px;
    height: 350px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

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

.hero-image img:hover {
    transform: scale(1.02);
}

.ar-image {
    width: 100%;
    height: 400px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.ar-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-illustration, .ar-illustration {
    max-width: 100%;
    height: auto;
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.01em;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--charcoal);
    color: var(--ivory);
}

.btn-primary:hover {
    background-color: var(--indigo);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background-color: var(--copper);
    color: var(--ivory);
}

.btn-secondary:hover {
    background-color: var(--sakura);
    color: var(--charcoal);
}

/* Sections */
.intro, .categories, .products, .ar-preview, .installation, .why-choose, .testimonials, .contact {
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.intro {
    background-color: white;
}

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

/* Categories Grid */
.categories {
    background-color: var(--background);
}

.categories h2 {
    margin-bottom: var(--spacing-xxl);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.category-card {
    padding: var(--spacing-xl);
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.category-icon {
    margin-bottom: var(--spacing-lg);
}

.category-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

/* Products Grid */
.products {
    background-color: white;
}

.products h2 {
    margin-bottom: var(--spacing-xxl);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.product-card {
    background-color: var(--background);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s ease;
}

.product-card:hover {
    box-shadow: var(--shadow-hover);
}

.product-image {
    height: 200px;
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
}

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

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

.image-placeholder, .ar-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--ivory);
    font-weight: 500;
    text-align: center;
}

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

.product-info h3 {
    margin-bottom: var(--spacing-sm);
}

.product-info p {
    margin-bottom: var(--spacing-lg);
}

.product-price {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--copper);
    margin-bottom: var(--spacing-md);
}

.product-illustration, .ar-illustration, .about-illustration, .approach-illustration {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* AR Preview Section */
.ar-preview {
    background-color: var(--background);
}

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

.feature-visual {
    height: 400px;
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
}

/* Installation Services */
.installation {
    background-color: white;
}

.installation h2 {
    margin-bottom: var(--spacing-xxl);
}

.installation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    padding: var(--spacing-xl);
    background-color: var(--background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

/* Why Choose Us */
.why-choose {
    background-color: var(--background);
}

.why-choose h2 {
    margin-bottom: var(--spacing-xxl);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.benefit-item {
    padding: var(--spacing-lg);
}

.benefit-item h3 {
    color: var(--copper);
    margin-bottom: var(--spacing-sm);
}

/* Testimonials */
.testimonials {
    background-color: white;
}

.testimonials h2 {
    margin-bottom: var(--spacing-xxl);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial {
    padding: var(--spacing-xl);
    background-color: var(--background);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--sakura);
}

.testimonial p {
    font-style: italic;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.client-name {
    font-weight: 500;
    color: var(--copper);
}

/* Contact Section */
.contact {
    background-color: var(--background);
}

.contact h2 {
    margin-bottom: var(--spacing-xxl);
}

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

.contact-item h3 {
    color: var(--copper);
    margin-bottom: var(--spacing-sm);
}

.contact-item a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
}

.contact-item a:hover {
    color: var(--copper);
}

.contact-item address {
    font-style: normal;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background-color: var(--background-dark);
    color: var(--text-light);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
    font-weight: 600;
}

.footer-description {
    color: rgba(245, 245, 245, 0.8);
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    line-height: 1.5;
}

.footer .logo-section .brand-name {
    color: var(--text-light);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--sakura);
}

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

.footer-contact a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-contact a:hover {
    color: var(--sakura);
}

.footer-contact address {
    font-style: normal;
    color: rgba(245, 245, 245, 0.8);
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(245, 245, 245, 0.1);
}

.footer-bottom p {
    color: rgba(245, 245, 245, 0.7);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    h1 {
        font-size: 2.25rem;
    }
    
    h2 {
        font-size: 1.875rem;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .intro, .categories, .products, .ar-preview, .installation, .why-choose, .testimonials, .contact {
        padding: var(--spacing-xl) 0;
    }
    
    .feature-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .footer-section {
        text-align: center;
    }
    
    .categories-grid,
    .products-grid,
    .installation-grid,
    .benefits-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.875rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial {
        padding: var(--spacing-lg);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
}