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

:root {
    /* Color Palette - Indigo and Persimmon */
    --primary-indigo: #2E4057;
    --primary-persimmon: #D2691E;
    --secondary-light-indigo: #4A5C6A;
    --secondary-light-persimmon: #E67E22;
    --neutral-white: #FFFFFF;
    --neutral-light-gray: #F8F9FA;
    --neutral-gray: #E9ECEF;
    --neutral-dark-gray: #6C757D;
    --neutral-black: #212529;
    
    /* Typography */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-secondary: 'Noto Serif JP', serif;
    
    /* Spacing System (8px base) */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    --spacing-xxxl: 96px;
    
    /* Line Heights */
    --line-height-body: 1.5;
    --line-height-heading: 1.2;
}

body {
    font-family: var(--font-primary);
    font-weight: 400;
    line-height: var(--line-height-body);
    color: var(--neutral-black);
    background-color: var(--neutral-white);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    line-height: var(--line-height-heading);
    margin-bottom: var(--spacing-sm);
    color: var(--primary-indigo);
}

h1 {
    font-size: 2.5rem;
    font-weight: 600;
}

h2 {
    font-size: 2rem;
    font-weight: 500;
}

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

h4 {
    font-size: 1.25rem;
    font-weight: 500;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--neutral-dark-gray);
}

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

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

.logo {
    flex-shrink: 0;
}

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

.brand-name {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 0;
    color: var(--primary-indigo);
}

.brand-subtitle {
    font-size: 0.875rem;
    color: var(--neutral-dark-gray);
    margin-bottom: 0;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--neutral-light-gray) 0%, var(--neutral-white) 100%);
    padding: var(--spacing-xxxl) 0;
}

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

.hero-title {
    font-size: 2.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-indigo);
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    color: var(--neutral-dark-gray);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-image {
    height: 400px;
    width: 100%;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid var(--neutral-gray);
}

/* Sections */
section {
    padding: var(--spacing-xxxl) 0;
}

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

.centered-content .container > * {
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: 2rem;
}

.section-description {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: 1.125rem;
    color: var(--neutral-dark-gray);
}

/* Introduction Section */
.intro {
    background-color: var(--neutral-light-gray);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    text-align: left;
}

.intro-image {
    height: 300px;
    width: 100%;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid var(--neutral-gray);
}

/* Traditional Lessons */
.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.lesson-card {
    background-color: var(--neutral-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    border: 1px solid var(--neutral-gray);
}

.lesson-icon {
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
}

.lesson-card h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-indigo);
}

.lesson-card p {
    color: var(--neutral-dark-gray);
    font-size: 0.95rem;
}

/* Modular Kits */
.modular-kits {
    background-color: var(--neutral-light-gray);
}

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

.kit-item {
    background-color: var(--neutral-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--neutral-gray);
}

.kit-image {
    height: 200px;
    width: 100%;
    object-fit: cover;
    border-radius: 12px 12px 0 0;
    border-bottom: 1px solid var(--neutral-gray);
}

.kit-item h4 {
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    color: var(--primary-indigo);
}

.kit-item p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--neutral-dark-gray);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Workshop Booking */
.workshop-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.workshop-features {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-md);
}

.workshop-features li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--neutral-gray);
    color: var(--neutral-dark-gray);
    position: relative;
    padding-left: var(--spacing-md);
}

.workshop-features li::before {
    content: '•';
    color: var(--primary-persimmon);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.workshop-image {
    height: 350px;
    width: 100%;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid var(--neutral-gray);
}

/* Washi Supply */
.washi-supply {
    background-color: var(--neutral-light-gray);
}

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

.supply-category {
    background-color: var(--neutral-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--neutral-gray);
}

.supply-icon {
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
}

.supply-category h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-indigo);
}

.supply-category p {
    color: var(--neutral-dark-gray);
    font-size: 0.95rem;
}

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

.product-card {
    background-color: var(--neutral-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--neutral-gray);
}

.product-image {
    height: 200px;
    width: 100%;
    object-fit: cover;
    border-radius: 12px 12px 0 0;
    border-bottom: 1px solid var(--neutral-gray);
}

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

.product-info h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-indigo);
}

.product-info p {
    color: var(--neutral-dark-gray);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

.product-price {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--primary-persimmon);
    margin-bottom: var(--spacing-md);
}

.product-btn {
    background-color: var(--primary-indigo);
    color: var(--neutral-white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95rem;
    font-family: var(--font-primary);
    width: 100%;
    transition: background-color 0.3s ease;
}

.product-btn:hover {
    background-color: var(--secondary-light-indigo);
}

/* B2B Services */
.b2b-services {
    background-color: var(--neutral-light-gray);
}

.b2b-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.b2b-service {
    background-color: var(--neutral-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--neutral-gray);
}

.b2b-service h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-indigo);
}

.b2b-service p {
    color: var(--neutral-dark-gray);
    font-size: 0.95rem;
}

/* Contacts */
.contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    background-color: var(--neutral-light-gray);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--neutral-gray);
}

.contact-icon {
    flex-shrink: 0;
    padding: var(--spacing-sm);
    background-color: var(--neutral-white);
    border-radius: 8px;
    border: 1px solid var(--primary-persimmon);
}

.contact-info h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--primary-indigo);
    font-size: 1.1rem;
}

.contact-info p {
    color: var(--neutral-dark-gray);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Footer */
.footer {
    background-color: var(--primary-indigo);
    color: var(--neutral-white);
    padding: var(--spacing-xl) 0;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--neutral-white);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    justify-items: center;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--neutral-white);
    text-decoration: none;
    font-size: 0.95rem;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.footer-links a:hover {
    border-bottom-color: var(--primary-persimmon);
}

.footer-copyright {
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-copyright p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
}

/* Placeholder Styles */
.placeholder-text {
    font-style: italic;
    color: var(--neutral-dark-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .intro-grid,
    .workshop-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .lessons-grid,
    .kits-grid,
    .supply-grid,
    .products-grid,
    .b2b-grid,
    .contacts-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .logo-brand {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
    
    section {
        padding: var(--spacing-xxl) 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
}