/* ==========================================================================
   Design System Variables & Base Settings
   ========================================================================== */
:root {
    /* Colors - Light Theme with Gold Accents */
    --bg-primary: #fafaf9;      /* 高級感のあるウォームホワイト（オフホワイト） */
    --bg-secondary: #f4f4f3;    /* やや深みのあるオフホワイト */
    --bg-tertiary: #eaeaeb;     /* さらに落ち着いたトーン */
    
    --accent-gold: #b89020;     /* 白背景に映える、視認性の高い落ち着いたゴールド */
    --accent-gold-rgb: 184, 144, 32;
    --accent-gold-hover: #9c7816;
    
    --text-white: #1c1c1c;      /* 元の text-white だった箇所をダークグレーに */
    --text-muted: #555555;      /* コントラストを担保した中間グレー */
    --text-dark: #fafaf9;       /* ボタン等の反転表示用（背景がゴールドの時など） */
    
    --border-color: rgba(184, 144, 32, 0.2);
    --border-light: rgba(0, 0, 0, 0.08);
    
    /* Transitions */
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-primary);
    color: var(--text-white);
}

body {
    font-family: 'Shippori Mincho', 'Georgia', serif;
    line-height: 1.8;
    letter-spacing: 0.05em;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Typography helper */
.montserrat {
    font-family: 'Montserrat', sans-serif;
}

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

img, video {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   Layout & Grid Utilities
   ========================================================================== */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 24px;
}

@media (max-width: 768px) {
    .section-container {
        padding: 60px 20px;
    }
}

.grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.grid-2col.reverse {
    direction: rtl;
}
.grid-2col.reverse > * {
    direction: ltr;
}

.grid-2col.gap-lg {
    gap: 80px;
}

@media (max-width: 992px) {
    .grid-2col {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .grid-2col.reverse {
        direction: ltr;
    }
}

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

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 14px 36px;
    font-family: 'Montserrat', 'Shippori Mincho', serif;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background-color: var(--accent-gold);
    color: var(--text-dark);
}

.btn-primary:hover {
    background-color: var(--accent-gold-hover);
    box-shadow: 0 0 20px rgba(var(--accent-gold-rgb), 0.4);
}

.btn-secondary {
    background-color: transparent;
    border-color: rgba(0, 0, 0, 0.2);
    color: var(--text-white);
}

.btn-secondary:hover {
    background-color: rgba(0, 0, 0, 0.03);
    border-color: var(--text-white);
}

.btn-gold {
    background-color: transparent;
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.btn-gold:hover {
    background-color: var(--accent-gold);
    color: var(--text-dark);
    box-shadow: 0 0 15px rgba(var(--accent-gold-rgb), 0.3);
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

.btn-lg {
    padding: 18px 48px;
    font-size: 1rem;
}

/* ==========================================================================
   Header Navigation
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    transition: var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.site-header.scrolled {
    background-color: rgba(250, 250, 249, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border-light);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-header.scrolled .header-container {
    padding: 16px 24px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--text-white);
}

.nav-menu ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-menu a {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--text-white);
    text-shadow: 
        -1.5px -1.5px 0 var(--bg-primary),
         1.5px -1.5px 0 var(--bg-primary),
        -1.5px  1.5px 0 var(--bg-primary),
         1.5px  1.5px 0 var(--bg-primary),
         0 0 8px var(--bg-primary);
}

.nav-menu a:hover {
    color: var(--accent-gold);
}

.nav-menu .nav-cta {
    border: 1px solid var(--accent-gold);
    padding: 8px 20px;
    color: var(--accent-gold);
    background-color: rgba(250, 250, 249, 0.8);
    border-radius: 2px;
}

.nav-menu .nav-cta:hover {
    background-color: var(--accent-gold);
    color: var(--text-dark);
}

/* Hamburger Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 101;
}

.menu-toggle .bar {
    width: 25px;
    height: 2px;
    background-color: var(--text-white);
    transition: var(--transition-fast);
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--bg-secondary);
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.08);
        padding: 100px 40px;
        transition: var(--transition-smooth);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }
    
    .nav-menu a {
        font-size: 1.1rem;
    }
    
    /* Toggle active state animation */
    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.video-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    will-change: transform;
    transform: translate3d(0, 0, 0);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(250,250,249,0.85) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
}

.hero-subtitle {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    color: var(--accent-gold);
    text-transform: uppercase;
    margin-bottom: 24px;
    text-shadow: 
        -1.5px -1.5px 0 var(--bg-primary),
         1.5px -1.5px 0 var(--bg-primary),
        -1.5px  1.5px 0 var(--bg-primary),
         1.5px  1.5px 0 var(--bg-primary),
         0 0 8px var(--bg-primary);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 500;
    line-height: 1.4;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
    text-shadow: 
        -2px -2px 0 var(--bg-primary),
         2px -2px 0 var(--bg-primary),
        -2px  2px 0 var(--bg-primary),
         2px  2px 0 var(--bg-primary),
        -3px  0px 0 var(--bg-primary),
         3px  0px 0 var(--bg-primary),
         0px -3px 0 var(--bg-primary),
         0px  3px 0 var(--bg-primary),
         0 0 10px var(--bg-primary),
         0 0 20px var(--bg-primary);
}

.hero-desc {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-muted);
    margin-bottom: 40px;
    text-shadow: 
        -1.5px -1.5px 0 var(--bg-primary),
         1.5px -1.5px 0 var(--bg-primary),
        -1.5px  1.5px 0 var(--bg-primary),
         1.5px  1.5px 0 var(--bg-primary),
         0 0 8px var(--bg-primary);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

@media (max-width: 576px) {
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
}

.scroll-indicator .arrow {
    width: 1px;
    height: 40px;
    background-color: rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.scroll-indicator .arrow::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background-color: var(--accent-gold);
    animation: scrollDown 2s infinite ease-in-out;
}

@keyframes scrollDown {
    0% { transform: translateY(-20px); }
    50% { transform: translateY(40px); }
    100% { transform: translateY(-20px); }
}

/* ==========================================================================
   Section Headers & Common Text Elements
   ========================================================================== */
.section-header {
    margin-bottom: 60px;
}

.section-subtitle {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    color: var(--accent-gold);
    text-transform: uppercase;
    display: block;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 500;
    line-height: 1.4;
    letter-spacing: 0.08em;
    color: var(--text-white);
}

.section-desc {
    color: var(--text-muted);
    margin-top: 16px;
    font-size: 1.05rem;
}

.text-p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 24px;
    text-align: justify;
}

.text-p.highlight {
    color: var(--text-white);
    border-left: 2px solid var(--accent-gold);
    padding-left: 20px;
    font-weight: 400;
}

/* ==========================================================================
   Introduction & Story Sections
   ========================================================================== */
.intro-section {
    background-color: var(--bg-primary);
}

.story-section {
    background-color: var(--bg-secondary);
}

.video-card {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    aspect-ratio: 16/9;
    border: 1px solid var(--border-color);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
    background-color: #fcfcfc;
}

.video-card video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.quote {
    font-style: italic;
    color: var(--accent-gold);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 24px 0;
    margin-top: 32px;
    font-size: 1.1rem;
    line-height: 1.6;
}

/* ==========================================================================
   Products Section
   ========================================================================== */
.products-section {
    background-color: var(--bg-primary);
}

.product-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-light);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: rgba(184, 144, 32, 0.4);
    box-shadow: 0 15px 35px rgba(184, 144, 32, 0.1);
}

.product-img-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    background-color: #000;
}

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

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

.product-video-wrapper {
    width: 100%;
    height: 100%;
}

.product-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--accent-gold);
    color: var(--text-dark);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    padding: 6px 14px;
    border-radius: 2px;
    z-index: 2;
}

.product-info {
    padding: 36px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-name {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 16px;
    letter-spacing: 0.08em;
}

.product-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 32px;
    line-height: 1.7;
    flex-grow: 1;
}

/* ==========================================================================
   Gallery Section
   ========================================================================== */
.gallery-section {
    background-color: var(--bg-secondary);
}

.gallery-slideshow-container {
    position: relative;
    width: 100%;
    max-width: 550px;
    margin: 0 auto;
    aspect-ratio: 1/1;
    overflow: hidden;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
    background-color: var(--bg-secondary);
}

@media (max-width: 768px) {
    .gallery-slideshow-container {
        max-width: 90%;
        aspect-ratio: 1/1;
    }
}

.gallery-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1.5s ease-in-out;
    z-index: 1;
}

.gallery-slide.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
}

.gallery-slide img, .gallery-slide video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(250, 250, 249, 0.95);
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    transition: var(--transition-fast);
    z-index: 3;
}

.gallery-slide:hover .gallery-slide-overlay {
    opacity: 1;
}

.gallery-slide-overlay span {
    font-size: 1.1rem;
    letter-spacing: 0.1em;
    color: var(--text-white);
    border-bottom: 1px solid var(--accent-gold);
    padding-bottom: 8px;
    text-align: center;
}

.slideshow-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    background: rgba(250, 250, 249, 0.85);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition-fast);
}

.slideshow-arrow:hover {
    background: var(--accent-gold);
    color: var(--text-dark);
    border-color: var(--accent-gold);
}

.slideshow-arrow.prev {
    left: 20px;
}

.slideshow-arrow.next {
    right: 20px;
}

@media (max-width: 576px) {
    .slideshow-arrow {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    .slideshow-arrow.prev { left: 10px; }
    .slideshow-arrow.next { right: 10px; }
}

.slideshow-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.slideshow-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: var(--transition-fast);
}

.slideshow-dot.active {
    background: var(--accent-gold);
    transform: scale(1.2);
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta-section {
    position: relative;
    padding: 120px 24px;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.cta-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    will-change: transform;
    transform: translate3d(0, 0, 0);
}

.cta-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(250, 250, 249, 0.85);
    z-index: 2;
}

.cta-content {
    position: relative;
    z-index: 3;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 500;
    margin-bottom: 20px;
    letter-spacing: 0.08em;
}

.cta-content p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background-color: #eae9e4;
    border-top: 1px solid var(--border-light);
    padding: 80px 24px 40px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

@media (max-width: 768px) {
    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

.footer-logo {
    font-size: 1.5rem;
    letter-spacing: 0.2em;
    margin-bottom: 16px;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.footer-tel {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.25rem;
    color: var(--accent-gold);
    font-weight: 600;
}

.footer-container h3 {
    font-size: 1rem;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
    color: var(--text-white);
    border-left: 2px solid var(--accent-gold);
    padding-left: 10px;
    line-height: 1.2;
}

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

.footer-links li, .footer-external li {
    margin-bottom: 12px;
}

.footer-links a, .footer-external a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links a:hover, .footer-external a:hover {
    color: var(--accent-gold);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid var(--border-light);
    padding-top: 40px;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Scroll Animations
   ========================================================================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1),
                transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

.collaboration-tag {
    font-size: 0.9rem;
    color: var(--accent-gold);
    margin-left: 8px;
    font-weight: 400;
}

/* ==========================================================================
   Wine Section
   ========================================================================== */
.wine-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.wine-img-card {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.06);
    background-color: var(--bg-secondary);
    aspect-ratio: 3/4;
}

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

.wine-img-card:hover .wine-img {
    transform: scale(1.03);
}

.wine-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: var(--accent-gold);
    color: var(--text-dark);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    padding: 6px 14px;
    border-radius: 2px;
    z-index: 2;
}

.wine-types {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin: 32px 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    padding: 24px 0;
}

.wine-type-item {
    position: relative;
    padding-left: 20px;
}

.wine-type-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background-color: var(--accent-gold);
    border-radius: 50%;
}

.wine-type-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 6px;
    font-family: 'Montserrat', 'Shippori Mincho', serif;
}

.wine-type-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.wine-cta {
    margin-top: 10px;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .wine-img-card {
        max-width: 400px;
        margin: 0 auto;
        aspect-ratio: 3/4;
    }
    
    .wine-types {
        margin: 24px 0;
        padding: 16px 0;
        gap: 16px;
    }
}

/* ==========================================================================
   Header Logo & Wine Image Grid Styles (Added)
   ========================================================================== */
.logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: 4px;
    object-fit: contain;
}

.wine-images-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 576px) {
    .wine-images-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        max-width: 280px;
        margin: 0 auto;
    }
}