/* Base Styles */
:root {
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --accent-color: #888888;
    --text-color: #333333;
    --background-light: #f8f8f8;
    --background-dark: #1a1a1a;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--secondary-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 15px;
}

p {
    margin-bottom: 15px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--accent-color);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    font-size: 2.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
}

.btn:hover {
    background-color: rgba(255, 255, 255, 0.95);;
    color: var(--primary-color);
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    background-color: rgba(255, 255, 255, 0.6);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

header.scrolled {
    padding: 10px 0;
}

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

.logo h1 {
    font-size: 1.8rem;
    margin-bottom: 0;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-weight: 500;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: var(--transition);
}

nav ul li a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    background-image: url('../assets/hero-bg.jpg');
    background-color: #000; /* Fallback for when image isn't available */
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--secondary-color);
}

.hero .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease;
}

.hero .btn {
    animation: fadeIn 1.5s ease;
}

/* About Section */
.about {
    padding: 100px 0;
    background-color: var(--background-light);
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.philosophy-item {
    text-align: center;
    padding: 30px;
    background-color: var(--secondary-color);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.philosophy-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.philosophy-item .icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--background-light);
    border-radius: 50%;
    font-size: 2rem;
    color: var(--primary-color);
}

.philosophy-item h3 {
    margin-bottom: 15px;
}

.mission-vision {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.mission, .vision {
    padding: 30px;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border-radius: 10px;
}

/* Achievements Section */
.achievements {
    padding: 100px 0;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto 50px;
}

.timeline::before {
    content: '';
    position: absolute;
    height: 100%;
    width: 2px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-color);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    position: relative;
    margin-bottom: 40px;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-item .date {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: var(--secondary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 700;
}

.timeline-item .content {
    background-color: var(--secondary-color);
    border-radius: 10px;
    padding: 25px;
    width: 80%;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.timeline-item:nth-child(even) .content {
    margin-left: 20px;
}

.timeline-item:nth-child(odd) .content {
    margin-right: 20px;
}

.stats {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    margin-top: 80px;
}

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-item .number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.stat-item .label {
    font-size: 1.2rem;
    color: var(--accent-color);
}

/* Products Section */
.products {
    padding: 100px 0;
    background-color: var(--background-light);
}

.products-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
    font-size: 1.1rem;
    color: var(--text-color);
}

.products-categories {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 50px;
}

.category-btn {
    padding: 12px 24px;
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 2px solid var(--accent-color);
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

.category-btn:hover,
.category-btn.active {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border-color: var(--primary-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.product-card {
    background-color: var(--secondary-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    opacity: 1;
    transform: scale(1);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.product-card.hidden {
    display: none;
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.product-overlay {
    position: absolute;
    top: 15px;
    right: 15px;
}

.product-category {
    background-color: rgba(0, 0, 0, 0.8);
    color: var(--secondary-color);
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.product-content {
    padding: 25px;
}

.product-content h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.product-content p {
    color: var(--text-color);
    line-height: 1.6;
    margin-bottom: 20px;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tag {
    background-color: var(--background-light);
    color: var(--text-color);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 500;
    padding: 10px 0;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.product-link:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.product-link i {
    font-size: 0.9rem;
}

/* Goods Section */
.goods {
    padding: 100px 0;
    overflow: hidden;
}

.goods-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
    font-size: 1.1rem;
    color: var(--text-color);
}

.goods-slider-container {
    position: relative;
    margin-bottom: 60px;
}

.goods-slider {
    overflow: hidden;
    margin: 0 60px;
}

.goods-track {
    display: flex;
    transition: transform 0.5s ease;
    gap: 20px;
}

.goods-item {
    flex: 0 0 300px;
    max-width: 300px;
}

.goods-image {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    cursor: pointer;
}

.goods-image:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.goods-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.goods-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    color: var(--secondary-color);
    padding: 30px 20px 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.goods-image:hover .goods-overlay {
    transform: translateY(0);
}

.goods-overlay h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.goods-overlay p {
    font-size: 0.95rem;
    margin-bottom: 15px;
    opacity: 0.9;
}

.btn-overlay {
    display: inline-block;
    padding: 8px 20px;
    background-color: var(--secondary-color);
    color: var(--primary-color);
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.btn-overlay:hover {
    background-color: rgba(255, 255, 255, 0.95);
    transform: scale(1.05);
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--secondary-color);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.slider-btn:hover {
    background-color: var(--primary-color);
    transform: translateY(-50%) scale(1.1);
}

.slider-prev {
    left: 0;
}

.slider-next {
    right: 0;
}

.goods-cta {
    text-align: center;
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background-color: var(--background-light);
}

.contact-minimal {
    text-align: center;
    padding: 60px 0;
}

.email-container {
    max-width: 600px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.email-link {
    display: inline-flex;
    align-items: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    text-decoration: none;
    padding: 20px 40px;
    border: 2px solid var(--primary-color);
    border-radius: 50px;
    transition: background-color 0.4s ease, color 0.4s ease;
    background-color: var(--secondary-color);
    width: 280px;
    height: 60px;
    justify-content: center;
    box-sizing: border-box;
}

.email-link i {
    font-size: 1.8rem;
    margin-right: 15px;
    flex-shrink: 0;
}

.email-link span {
    display: inline-block;
    transition: font-size 0.4s ease;
    overflow: hidden;
    white-space: nowrap;
    flex-shrink: 0;
}

.email-link:hover span,
.email-link:active span {
    font-size: 0.9rem;
}

.email-link:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-logo h2 {
    margin-bottom: 15px;
}

.footer-links h3 {
    margin-bottom: 15px;
    position: relative;
}

.footer-links h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: var(--secondary-color);
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Media Queries */
@media (max-width: 992px) {
    .timeline-item {
        padding-right: 0;
        padding-left: 80px;
        justify-content: flex-start;
    }
    
    .timeline-item:nth-child(even) {
        padding-left: 80px;
    }
    
    .timeline::before {
        left: 40px;
    }
    
    .timeline-item .date {
        left: 40px;
        transform: translateX(-50%);
    }
    
    .timeline-item .content {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 80%;
        height: calc(100vh - 70px);
        background-color: var(--secondary-color);
        transition: var(--transition);
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    }
    
    nav.active {
        left: 0;
    }
    
    nav ul {
        flex-direction: column;
        padding: 30px;
    }
    
    nav ul li {
        margin: 15px 0;
    }
    
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* Products responsive */
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }
    
    .products-categories {
        gap: 10px;
    }
    
    .category-btn {
        padding: 10px 18px;
        font-size: 0.9rem;
    }
    
    .goods-slider {
        margin: 0 40px;
    }
    
    .goods-item {
        flex: 0 0 250px;
        max-width: 250px;
    }
    
    .goods-image img {
        height: 350px;
    }
}

@media (max-width: 576px) {
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-item:nth-child(even) {
        padding-left: 50px;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item .date {
        left: 20px;
        transform: translateX(-50%);
        padding: 5px 10px;
        font-size: 0.85rem;
    }
    
    .stats {
        flex-direction: column;
        gap: 30px;
    }
    
    /* Products mobile */
    .products-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .products-categories {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
    
    .category-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
        width: 150px;
        text-align: center;
    }
    
    .product-content {
        padding: 20px;
    }
    
    .product-content h3 {
        font-size: 1.2rem;
    }
    
    .goods-slider {
        margin: 0 30px;
    }
    
    .goods-item {
        flex: 0 0 200px;
        max-width: 200px;
    }
    
    .goods-image img {
        height: 280px;
    }
    
    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}