/* リセットCSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* カスタムプロパティ（CSS変数） */
:root {
    /* カラーパレット */
    --primary-green: #4a5c3a;
    --primary-green-light: #6b7c5b;
    --primary-green-dark: #3a4a2a;
    --accent-gold: #d4af37;
    --accent-gold-light: #e8c547;
    --neutral-white: #ffffff;
    --neutral-cream: #f5f3f0;
    --neutral-beige: #e8e4df;
    --neutral-gray: #666666;
    --neutral-dark: #333333;
    --text-dark: #2c2c2c;
    
    /* フォント */
    --font-sans: 'Noto Sans JP', sans-serif;
    --font-serif: 'Noto Serif JP', serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* レイアウト */
    --max-width: 1200px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* アニメーション */
    --transition-default: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

/* ベーススタイル */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--neutral-white);
    overflow-x: hidden;
}

/* コンテナ */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ヘッダー */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: var(--transition-default);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    text-decoration: none;
    color: var(--primary-green);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
}

.logo-subtitle {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    font-weight: 300;
    margin-top: 2px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 400;
    position: relative;
    transition: var(--transition-default);
}

.nav-link:hover {
    color: var(--primary-green);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-green);
    transition: var(--transition-default);
}

.nav-link:hover::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.cart-btn {
    color: var(--text-dark);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--neutral-gray);
    border-radius: var(--border-radius);
    transition: var(--transition-default);
}

.cart-btn:hover {
    background-color: var(--primary-green);
    color: var(--neutral-white);
    border-color: var(--primary-green);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 4px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    transition: var(--transition-default);
}

/* メインビジュアル */
.hero {
    margin-top: 80px;
    height: 80vh;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--neutral-cream) 0%, var(--neutral-beige) 100%);
}

.hero-slider {
    height: 100%;
    position: relative;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: var(--transition-slow);
    display: flex;
    align-items: center;
}

.hero-slide.active {
    opacity: 1;
}

.hero-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
    width: 100%;
}

.hero-text {
    animation: slideInLeft 1s ease-out;
}

.hero-season {
    color: var(--accent-gold);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--neutral-gray);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-btn {
    display: inline-block;
    background-color: var(--primary-green);
    color: var(--neutral-white);
    padding: var(--spacing-md) var(--spacing-xl);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition-default);
    font-weight: 500;
}

.hero-btn:hover {
    background-color: var(--primary-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(74, 92, 58, 0.3);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: slideInRight 1s ease-out;
}

.hero-image-placeholder {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: var(--transition-default);
}

.hero-image-placeholder:hover {
    transform: scale(1.05);
}

.hero-image-placeholder.matcha {
    background: radial-gradient(circle, #8BC34A 0%, #4CAF50 100%);
}

.hero-image-placeholder.chestnut {
    background: radial-gradient(circle, #D4AF37 0%, #B8860B 100%);
}

.hero-dots {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition-default);
}

.dot.active {
    background-color: var(--primary-green);
}

/* お知らせセクション */
.news-banner {
    background-color: var(--neutral-cream);
    padding: var(--spacing-xl) 0;
}

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

.news-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--primary-green);
    margin-bottom: var(--spacing-lg);
}

.news-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.news-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--neutral-white);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: var(--transition-default);
}

.news-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.news-date {
    color: var(--neutral-gray);
    font-size: 0.9rem;
    min-width: 80px;
}

.news-label {
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 500;
    min-width: 80px;
    text-align: center;
}

.news-label.info {
    background-color: var(--primary-green);
    color: var(--neutral-white);
}

.news-label.campaign {
    background-color: var(--accent-gold);
    color: var(--neutral-white);
}

.news-text {
    flex: 1;
    text-align: left;
}

.news-more {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid var(--primary-green);
    transition: var(--transition-default);
}

.news-more:hover {
    color: var(--primary-green-dark);
}

/* セクションタイトル */
.section-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    color: var(--primary-green);
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--accent-gold);
    margin: var(--spacing-md) auto 0;
}

/* 商品セクション */
.products-section {
    padding: var(--spacing-xxl) 0;
}

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

.product-category:nth-child(even) {
    direction: rtl;
}

.product-category:nth-child(even) .product-info {
    direction: ltr;
}

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

.product-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--primary-green);
    margin-bottom: var(--spacing-md);
}

.product-description {
    color: var(--neutral-gray);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.product-link {
    display: inline-block;
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--primary-green);
    border-radius: var(--border-radius);
    transition: var(--transition-default);
}

.product-link:hover {
    background-color: var(--primary-green);
    color: var(--neutral-white);
    transform: translateY(-2px);
}

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

.product-image-placeholder {
    width: 350px;
    height: 280px;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition-default);
}

.product-image-placeholder:hover {
    transform: scale(1.05);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.15);
}

.product-image-placeholder.seasonal {
    background: linear-gradient(135deg, #E8F5E8 0%, #C8E6C9 100%);
}

.product-image-placeholder.traditional {
    background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
}

.product-image-placeholder.gift {
    background: linear-gradient(135deg, #F3E5F5 0%, #E1BEE7 100%);
}

/* 特徴セクション */
.features-section {
    background-color: var(--neutral-cream);
    padding: var(--spacing-xxl) 0;
}

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

.feature-item {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--neutral-white);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: var(--transition-default);
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    margin-bottom: var(--spacing-md);
}

.icon-placeholder {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    border-radius: 50%;
    background-color: var(--primary-green);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.icon-placeholder::before {
    content: '';
    width: 40px;
    height: 40px;
    background-color: var(--neutral-white);
    border-radius: 4px;
}

.feature-title {
    font-size: 1.2rem;
    color: var(--primary-green);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.feature-description {
    color: var(--neutral-gray);
    line-height: 1.6;
}

/* フッター */
.footer {
    background-color: var(--primary-green-dark);
    color: var(--neutral-white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

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

.footer-logo {
    margin-bottom: var(--spacing-md);
}

.footer-logo .logo-text {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-logo .logo-subtitle {
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    opacity: 0.8;
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xs);
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--accent-gold);
}

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

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-default);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-default);
}

.footer-legal a:hover {
    color: var(--neutral-white);
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* アニメーション */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        height: 60vh;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-image-placeholder {
        width: 280px;
        height: 280px;
    }
    
    .product-category {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .product-category:nth-child(even) {
        direction: ltr;
    }
    
    .product-image-placeholder {
        width: 100%;
        max-width: 300px;
        height: 240px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .news-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .news-date {
        min-width: auto;
    }
    
    .news-label {
        min-width: auto;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-image-placeholder {
        width: 240px;
        height: 240px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .product-title {
        font-size: 1.5rem;
    }
}