/* =============================================================================
   GAME KAITORI - Premium Design System
   Modern & Luxury Game Trading Landing Page
   ============================================================================= */

/* CSS Custom Properties (Design Tokens) */
:root {
    /* Colors - Refined Dark & Gold Theme */
    --primary-dark: #1d1d1d; /* Replaced green */
    --primary-main: #2a2a2a; /* Replaced green */
    --primary-light: #3c3c3c; /* Replaced green */
    --accent-gold: #c9b068; /* Champagne Gold */
    --accent-gold-light: #e0ca86;
    --accent-gold-dark: #ad954d;
    
    /* Background Colors */
    --bg-primary: #141414; /* Charcoal Black */
    --bg-secondary: #1f1f1f; /* Lighter charcoal for sections */
    --bg-tertiary: #2d2d2d;
    --bg-card: rgba(31, 31, 31, 0.8); /* Adjusted to match secondary */
    
    /* Text Colors */
    --text-primary: #f5f5f5;
    --text-secondary: #c4c4c4;
    --text-muted: #8a8a8a;
    --text-inverse: #1a1a1a;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-main) 50%, var(--primary-light) 100%);
    --gradient-gold: linear-gradient(135deg, var(--accent-gold-dark) 0%, var(--accent-gold) 50%, var(--accent-gold-light) 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(15, 15, 15, 0) 0%, rgba(15, 15, 15, 0.8) 100%);
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Typography */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Shadows & Effects */
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(212, 175, 55, 0.3);
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --transition-base: 0.3s ease-in-out;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-primary); line-height: 1.6; color: var(--text-primary); background: var(--bg-primary); overflow-x: hidden; word-break: auto; overflow-wrap: break-word; }

/* Utilities */
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 var(--space-md); }
.section-header { text-align: center; margin-bottom: var(--space-3xl); }
.section-title { font-family: var(--font-secondary); font-size: var(--font-size-4xl); font-weight: 700; color: var(--text-primary); margin-bottom: var(--space-md); background: var(--gradient-gold); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.section-subtitle { font-size: var(--font-size-lg); color: #6c757d; max-width: 600px; margin: 0 auto; }

/* Header */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: var(--bg-secondary); backdrop-filter: blur(10px); border-bottom: 1px solid var(--accent-gold); transition: padding 0.3s ease-in-out, background-color 0.3s ease-in-out; }
.header.scrolled { padding: var(--space-xs) 0; background: rgba(31, 31, 31, 0.8); }

.header-content { display: flex; align-items: center; justify-content: space-between; padding: var(--space-md) 0; transition: padding 0.3s ease-in-out; }
.header.scrolled .header-content { padding: var(--space-xs) 0; }
.logo h1 { font-family: var(--font-secondary); font-size: var(--font-size-xl); font-weight: 900; color: var(--accent-gold); transition: font-size 0.3s ease-in-out; }
.header.scrolled .logo h1 { font-size: var(--font-size-lg); }
.logo span { font-size: var(--font-size-xs); color: var(--text-secondary); font-weight: 300; }
.nav-list { display: flex; list-style: none; gap: var(--space-xl); }
.nav-list a { text-decoration: none; color: var(--text-secondary); font-weight: 500; transition: var(--transition-base); }
.nav-list a:hover { color: var(--accent-gold); }


/* Hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; background: var(--gradient-primary); }
.hero-content { display: grid; grid-template-columns: 1fr auto; gap: var(--space-3xl); align-items: center; width: 100%; padding: var(--space-3xl) 0; position: relative; z-index: 1; }
/* Canvas for smoky background in hero */
.hero-smoke-canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; opacity: 1; z-index: 0; }
.hero-title { font-family: var(--font-secondary); font-weight: 900; line-height: 1.2; margin-bottom: var(--space-lg); }
.hero-title-sub { display: block; font-size: var(--font-size-lg); color: var(--accent-gold); font-weight: 500; margin-bottom: var(--space-xs); }
.hero-title-main { display: block; font-size: var(--font-size-5xl); color: var(--text-primary); margin-bottom: var(--space-sm); }
.hero-title-accent { display: block; font-size: var(--font-size-5xl); background: var(--gradient-gold); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-stats { display: flex; gap: var(--space-xl); margin-bottom: var(--space-2xl); }
.stat-item { text-align: center; }
.stat-number { font-family: var(--font-secondary); font-size: var(--font-size-2xl); font-weight: 700; color: var(--accent-gold); }
.stat-label { font-size: var(--font-size-sm); color: var(--text-muted); }

/* Buttons */
.line-btn-primary small { display: inline; }

/* Features */
.service-features { padding: var(--space-3xl) 0; background: #ffffff; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-2xl); }
.feature-card { background: #ffffff; border-radius: var(--radius-xl); padding: var(--space-2xl); text-align: center; transition: var(--transition-base); position: relative; overflow: hidden; border: 1px solid #e9ecef; box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), var(--accent-gold-light), transparent 40%); opacity: 0; transition: opacity 0.4s ease-out; }
.feature-card:hover::before { opacity: 0.1; }
.feature-card:hover { transform: translateY(-6px); box-shadow: 0 8px 25px rgba(0,0,0,0.08); border-color: var(--accent-gold); }
.feature-icon { width: 80px; height: 80px; background: var(--gradient-gold); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto var(--space-lg); font-size: var(--font-size-2xl); color: var(--text-inverse); }
.feature-title { font-family: var(--font-secondary); font-size: var(--font-size-xl); font-weight: 600; color: #212529; margin-bottom: var(--space-md); height: 3em; display: flex; align-items: center; justify-content: center; white-space: nowrap; }
.feature-description { color: #495057; }
.feature-highlight { color: #6c757d; font-size: 0.9rem; margin-top: 1rem; }

/* News */
.news { padding: var(--space-3xl) 0; background: #f8f9fa; }
.news-container { display: flex; flex-direction: column; gap: var(--space-lg); max-width: 800px; margin: 0 auto; }
.news-item { display: grid; grid-template-columns: auto auto 1fr; gap: var(--space-md); align-items: center; padding: var(--space-lg); background: #ffffff; border-radius: var(--radius-lg); transition: var(--transition-base); border: 1px solid #e9ecef; box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
.news-item:hover { background: #f8f9fa; transform: translateX(4px); }
.news-date { color: #6c757d; }
.news-category { padding: var(--space-xs) var(--space-sm); border-radius: 0.375rem; font-size: var(--font-size-xs); font-weight: 600; text-transform: uppercase; }
.news-category.campaign { background: rgba(201, 176, 104, 0.3); color: var(--accent-gold-dark); }
.news-category.info { background: rgba(108, 117, 125, 0.3); color: #6c757d; }
.news-title { color: #212529; }

/* Flow */
.flow { padding: var(--space-3xl) 0; background: #ffffff; }
.flow-steps { display: flex; flex-direction: column; align-items: center; gap: 0; max-width: 600px; margin: 0 auto; position: relative; }
.flow-steps::before { content: ''; position: absolute; top: 30px; bottom: 30px; left: 29px; width: 2px; background: linear-gradient(#ffffff, var(--accent-gold-dark), #ffffff); z-index: 0; }

.step-item { position: relative; display: flex; align-items: flex-start; gap: var(--space-xl); width: 100%; padding: var(--space-lg) 0; }
.step-item:nth-child(odd) { justify-content: flex-start; }
.step-item:nth-child(even) { justify-content: flex-start; } /* Simplified for single column */

.step-number { width: 60px; height: 60px; background: #ffffff; color: var(--accent-gold); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: var(--font-size-xl); font-weight: 700; font-family: var(--font-secondary); flex-shrink: 0; border: 2px solid var(--accent-gold-dark); z-index: 1; box-shadow: 0 0 15px rgba(201,176,104,0.2); }
.step-icon { color: var(--accent-gold); font-size: 1.5rem; margin-bottom: 0.5rem; }
.step-content { flex: 1; padding-top: var(--space-xs); }
.step-title { font-family: var(--font-secondary); font-size: var(--font-size-lg); font-weight: 600; margin-bottom: var(--space-xs); color: #212529; }
.step-description { color: #495057; }
.step-arrow { color: #ced4da; font-size: 1.5rem; margin-top: 1rem; }

/* Products */
.products { padding: var(--space-3xl) 0; background: #f8f9fa; }
.products-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-2xl); }
.product-category { background: #ffffff; border: 1px solid #e9ecef; box-shadow: 0 4px 12px rgba(0,0,0,0.05); border-radius: var(--radius-xl); padding: var(--space-2xl); text-align: center; transition: var(--transition-base); display: flex; flex-direction: column; }
.product-category:hover { transform: translateY(-4px); box-shadow: 0 8px 25px rgba(0,0,0,0.08); }
.category-icon { font-size: 2rem; color: var(--accent-gold); margin-bottom: 1rem; }
.category-title { font-family: var(--font-secondary); font-size: 1.1rem; font-weight: 600; color: #212529; margin-bottom: 1rem; height: 2.5em; display: flex; align-items: center; justify-content: center; white-space: nowrap; }
.category-list { list-style: none; text-align: left; }
.category-list li { padding: var(--space-xs) 0; color: #495057; position: relative; padding-left: var(--space-lg); white-space: nowrap; }
.category-list li::before { content: '✓'; position: absolute; left: 0; color: var(--accent-gold); font-weight: bold; }

/* FAQ */
.faq { padding: var(--space-3xl) 0; background: #ffffff; }
.faq-container { max-width: 800px; margin: 0 auto; }
.faq-item { margin-bottom: var(--space-lg); background: #ffffff; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid #e9ecef; box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
.faq-question { display: flex; justify-content: space-between; align-items: center; padding: var(--space-lg); cursor: pointer; transition: var(--transition-base); }
.faq-question:hover { background: #f8f9fa; }
.faq-question h3 { color: #212529; font-size: var(--font-size-base); font-weight: 600; }
.faq-answer { max-height: 0; overflow: hidden; transition: var(--transition-base); }
.faq-item.active .faq-answer { max-height: 200px; }
.faq-answer p { padding: 0 var(--space-lg) var(--space-lg); color: #495057; }
.faq-question i.faq-icon { color: #adb5bd; }

/* Closing */
.closing { padding: var(--space-3xl) 0; background: #f8f9fa; text-align: center; color: #212529; }
.closing-title { font-family: var(--font-secondary); font-size: var(--font-size-4xl); font-weight: 700; color: #212529; margin-bottom: var(--space-lg); }
.closing-accent { color: var(--accent-gold); }
.closing-description { color: #6c757d; margin-bottom: var(--space-2xl); }
.closing-benefits { display: flex; justify-content: center; gap: var(--space-xl); flex-wrap: wrap; margin-top: 1.5rem; }
.benefit-item { display: flex; align-items: center; gap: var(--space-xs); color: #495057; font-size: var(--font-size-sm); }
.benefit-item i { color: var(--accent-gold); }

/* Footer */
.footer { background: var(--bg-secondary); border-top: 1px solid var(--accent-gold); padding: var(--space-3xl) 0 var(--space-lg); }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: var(--space-2xl); margin-bottom: var(--space-2xl); }
.footer-section { text-align: center; }
.footer-description { text-align: center; }
.footer-links { list-style: none; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: var(--font-size-sm); transition: var(--transition-base); }
.footer-links a:hover { color: var(--accent-gold); }

.footer-bottom-content {
    text-align: right;
}

/* Terms and Privacy Pages */
.content-section {
    padding-top: 120px;
    padding-bottom: var(--space-3xl);
    background: #ffffff;
    color: #212529;
}

.terms-content h3, .privacy-content h3 {
    font-family: var(--font-secondary);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: #212529;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-lg);
    padding-left: var(--space-md);
    border-left: 4px solid var(--accent-gold);
}

.terms-content p, .privacy-content p,
.terms-content ul, .privacy-content ul {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-lg);
    line-height: 1.8;
}

.terms-content ul, .privacy-content ul {
    padding-left: calc(var(--space-lg) + 20px)
}
 
 /* Fixed Elements */
 .line-fixed-btn { position: fixed; bottom: var(--space-lg); right: var(--space-lg); z-index: 999; }
.back-to-top { position: fixed; bottom: var(--space-lg); left: var(--space-lg); width: 50px; height: 50px; background: var(--bg-tertiary); border: 1px solid var(--primary-light); color: var(--accent-gold); border-radius: 50%; cursor: pointer; transition: var(--transition-base); opacity: 0; visibility: hidden; z-index: 998; }
.back-to-top.visible { opacity: 1; visibility: visible; }

/* Mobile Responsive */
@media (max-width: 768px) {
    main {
        padding-top: 80px; /* Adjust this value based on header height */
    }
    .container { padding: 0 var(--space-sm); }
    .nav { display: none; }
    .hero-content { grid-template-columns: 1fr; text-align: center; gap: var(--space-2xl); }
    .hero-actions {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .hero-title-main, .hero-title-accent { font-size: 2rem; }
    .section-title { font-size: 1.8rem; }
    .features-grid { grid-template-columns: 1fr; gap: var(--space-xl); }
    .products-grid { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
    .category-list { text-align: center; }
    .category-list li::before { left: 50%; transform: translateX(-80px); }
    .news-item { grid-template-columns: 1fr; text-align: center; gap: var(--space-sm); }
    .step-item { flex-direction: column; align-items: center; text-align: center; gap: var(--space-lg); }
    .flow-steps::before { display: none; }
    .closing-title { font-size: 1.8rem; }
    .closing-actions { display: flex; flex-direction: column; align-items: center; }
    .closing-actions .line-btn-primary { flex-direction: row; align-items: center; gap: 0.5rem; }
    .closing-actions .line-btn-primary small { display: none; }
    .closing-benefits { flex-wrap: nowrap; justify-content: space-around; width: 100%; margin-top: 1.5rem; }
    .footer-content { grid-template-columns: 1fr; }
    .line-btn-primary { width: 100%; max-width: 300px; }
}

.page-template-page-lp .category-list { list-style: none; text-align: left; padding-left: 0; }
.page-template-page-lp .category-list li { padding: var(--space-xs) 0; color: #495057; position: relative; padding-left: var(--space-lg); white-space: nowrap; }
.page-template-page-lp .category-list li::before { content: '✓'; position: absolute; left: 0; color: var(--accent-gold); font-weight: bold; }

/* FAQ */
.page-template-page-lp .faq { padding: var(--space-3xl) 0; background: #ffffff; }
.page-template-page-lp .feature-icon i { display: flex; align-items: center; justify-content: center; }

/* Product Articles */
.page-template-page-lp .product-articles { padding: var(--space-3xl) 0; background: #f8f9fa; }
.page-template-page-lp .articles-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-2xl); }
.page-template-page-lp .article-card { display: block; text-decoration: none; background: #ffffff; border-radius: var(--radius-xl); overflow: hidden; box-shadow: 0 4px 12px rgba(0,0,0,0.05); transition: var(--transition-base); border: 1px solid #e9ecef; }
.page-template-page-lp .article-card:hover { transform: translateY(-6px); box-shadow: 0 8px 25px rgba(0,0,0,0.08); border-color: var(--accent-gold); }
.page-template-page-lp .article-card-image { width: 100%; height: 180px; overflow: hidden; }
.page-template-page-lp .article-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.page-template-page-lp .article-card:hover .article-card-image img { transform: scale(1.05); }
.page-template-page-lp .article-card-content { padding: var(--space-lg); }
.page-template-page-lp .article-card-title { font-family: var(--font-secondary); font-size: var(--font-size-lg); font-weight: 600; color: #212529; margin-bottom: var(--space-sm); }
.page-template-page-lp .article-card-date { font-size: var(--font-size-sm); color: #6c757d; }

/* News */
.page-template-page-lp .news { padding: var(--space-3xl) 0; background: #ffffff; }
.page-template-page-lp .news-container { display: flex; flex-direction: column; gap: var(--space-lg); max-width: 800px; margin: 0 auto; }
.page-template-page-lp .news-item { display: grid; grid-template-columns: auto auto 1fr; gap: var(--space-md); align-items: center; padding: var(--space-lg); background: #ffffff; border-radius: var(--radius-lg); transition: var(--transition-base); border: 1px solid #e9ecef; box-shadow: 0 2px 8px rgba(0,0,0,0.04); }