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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans JP', -webkit-hiragino-pron-gothic-w3, 'Hiragino Kaku Gothic ProN', meiryo, sans-serif;
    line-height: 1.7;
    color: #333;
    background-color: #ffffff;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    background-color: #f5f5f5;
}

/* ===== Color Variables ===== */
:root {
    --primary-white: #ffffff;
    --primary-gold: #d4af37;
    --accent-gold: #f4e7c1;
    --light-gold: #faf6e8;
    --dark-text: #654321;
    --medium-text: #555555;
    --light-text: #888888;
    --border-light: #f0f0f0;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Typography ===== */
h1, h2, h3 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--dark-text);
}

/* ===== Buttons ===== */
.btn-primary, .btn-secondary, .btn-purchase {
    display: inline-block;
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-gold) 0%, #b8941f 100%);
    color: var(--primary-white);
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.4);
}

.btn-secondary {
    background: var(--primary-white);
    color: var(--primary-gold);
    border: 2px solid var(--primary-gold);
}

.btn-secondary:hover {
    background: var(--primary-gold);
    color: var(--primary-white);
    transform: translateY(-2px);
}

.btn-purchase {
    background: var(--primary-gold);
    color: var(--primary-white);
    padding: 12px 24px;
    font-size: 14px;
}

.btn-purchase:hover {
    background: #b8941f;
    transform: translateY(-1px);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--light-gold) 0%, var(--primary-white) 50%, var(--accent-gold) 100%);
    display: flex;
    align-items: center;
    position: relative;
    padding: 60px 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="%23d4af37" opacity="0.1"/><circle cx="80" cy="80" r="1" fill="%23d4af37" opacity="0.1"/><circle cx="40" cy="60" r="1.5" fill="%23d4af37" opacity="0.1"/></svg>');
    pointer-events: none;
}



.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    margin-top: 20px;
}

.main-copy {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark-text);
    background: linear-gradient(135deg, var(--dark-text) 0%, var(--primary-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sub-copy {
    font-size: 18px;
    color: var(--medium-text);
    margin-bottom: 40px;
    line-height: 1.6;
}

.product-collection {
    margin: 0 0 40px 0;
    padding: 0;
}

.collection-img {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    border-radius: 20px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.1);
}

.cta-primary {
    margin-top: 40px;
}

/* ===== Products Section ===== */
.products {
    padding: 80px 0;
    background: var(--primary-white);
}

.section-title {
    font-size: 28px;
    text-align: center;
    margin-bottom: 60px;
    color: var(--dark-text);
    position: relative;
}

.section-title::after {
    content: '';
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-gold), var(--accent-gold));
    display: block;
    margin: 20px auto 0;
    border-radius: 2px;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.product-item {
    background: var(--primary-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--border-light);
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(212, 175, 55, 0.2);
}

.product-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: var(--light-gold);
}

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

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

.product-info {
    padding: 30px;
    text-align: center;
}

.product-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark-text);
}

.product-variant {
    font-size: 14px;
    color: var(--medium-text);
    margin-bottom: 8px;
}

.release-info {
    font-size: 14px;
    color: var(--primary-gold);
    font-weight: 500;
    margin-bottom: 20px;
}

.product-cta {
    margin-top: 24px;
}

/* ===== Limited Offer Section ===== */
.limited-offer {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--light-gold) 100%);
    position: relative;
}

.limited-offer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><polygon points="50,10 65,35 90,35 72.5,52.5 80,80 50,65 20,80 27.5,52.5 10,35 35,35" fill="%23d4af37" opacity="0.05"/></svg>') center/300px;
    pointer-events: none;
}

.offer-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
}

.offer-badge {
    display: inline-block;
    background: var(--primary-gold);
    color: var(--primary-white);
    padding: 8px 24px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 30px;
    letter-spacing: 1px;
}

.offer-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--dark-text);
}

.offer-description {
    font-size: 16px;
    color: var(--medium-text);
    margin-bottom: 40px;
    line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
    background: var(--dark-text);
    color: var(--primary-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--accent-gold);
}

.company-address {
    font-style: normal;
    line-height: 1.7;
    color: #cccccc;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 15px;
}

.social-link {
    display: block;
    padding: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    text-decoration: none;
    color: var(--primary-white);
    text-align: center;
    transition: all 0.3s ease;
    font-size: 14px;
}

.social-link:hover {
    background: var(--primary-gold);
    transform: translateY(-2px);
}

.contact-email {
    color: var(--accent-gold);
    text-decoration: none;
    word-break: break-all;
}

.contact-email:hover {
    color: var(--primary-gold);
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 30px;
    text-align: center;
}

.copyright {
    color: #999;
    font-size: 14px;
}

/* ===== Responsive Design ===== */

/* タブレット以上 */
@media (min-width: 768px) {
    .container {
        padding: 0 40px;
    }
    
    .logo-img {
        max-width: 350px;
    }
    
    .main-copy {
        font-size: 42px;
    }
    
    .sub-copy {
        font-size: 20px;
    }
    
    .collection-img {
        max-width: 500px;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        gap: 60px;
    }
    
    .social-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* デスクトップ */
@media (min-width: 1024px) {
    .hero {
        padding: 80px 0;
    }
    
    .logo-img {
        max-width: 400px;
    }
    
    .main-copy {
        font-size: 48px;
    }
    
    .sub-copy {
        font-size: 22px;
    }
    
    .collection-img {
        max-width: 600px;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .product-image {
        height: 300px;
    }
    
    .offer-title {
        font-size: 32px;
    }
    
    .social-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 大型デスクトップ */
@media (min-width: 1200px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 1000px;
    }
}

/* ===== アクセシビリティ ===== */
.keyboard-navigation *:focus {
    outline: 3px solid var(--primary-gold);
    outline-offset: 2px;
}

/* フォーカス表示の改善 */
.btn-primary:focus,
.btn-secondary:focus,
.btn-purchase:focus,
.social-link:focus,
.contact-email:focus {
    outline: 3px solid var(--primary-gold);
    outline-offset: 2px;
}

/* 画像の読み込み状態 */
img {
    transition: opacity 0.3s ease;
}

/* ===== アニメーション用クラス ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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