/*
===========================================
SILVA - 心理戦カードゲーム Premium Styles
Version: 7.0 (Ultimate Edition)
Author: KUKU DAO
===========================================
*/

/* 横スクロールの制御 */
html, body {
  max-width: 100vw;
  overflow-x: hidden;
}

.container {
  max-width: 100%;
  overflow-x: hidden;
}

/* カード一覧のみ横スクロール許可 */
.cards-grid-container {
  overflow-x: visible !important;
}

.cards-grid {
  overflow-x: auto !important;
}

/* 最新のモバイル最適化とタッチ操作の改善 */
@media (hover: none) and (pointer: coarse) {
  /* タッチデバイス専用の最適化 */
  .game-card:hover {
    transform: none;
    box-shadow: inherit;
  }
  
  .btn:hover {
    transform: none;
    box-shadow: inherit;
  }
  
  .nav-link:hover {
    transform: none;
    background: inherit;
  }
  
  .cards-toggle-btn:hover {
    transform: none;
    box-shadow: inherit;
  }
}

/* 動的ビューポートハイトのサポート */
@supports (height: 100dvh) {
  .hero {
    min-height: 100dvh;
  }
  
  .modal-content {
    max-height: 90dvh;
  }
}

/* CSS Custom Properties (Variables) */
:root {
  /* Primary Colors */
  --color-primary: #10b981;
  --color-primary-dark: #059669;
  --color-primary-light: #34d399;
  --color-primary-rgb: 16, 185, 129;
  
  /* Secondary Colors */
  --color-secondary: #ff6b6b;
  --color-secondary-dark: #ee5a24;
  --color-secondary-light: #ff8e8e;
  
  /* Accent Colors */
  --color-accent: #22d3ee;
  --color-accent-dark: #0891b2;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  /* Background Colors */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #111111;
  --color-bg-tertiary: #1a1a1a;
  --color-bg-card: #1a2e1a;
  --color-bg-gradient: linear-gradient(135deg, #0a0a0a 0%, #1a2e1a 50%, #16213e 100%);
  
  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #cccccc;
  --color-text-tertiary: #999999;
  --color-text-muted: #666666;
  
  /* Border Colors */
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-light: rgba(255, 255, 255, 0.05);
  --color-border-primary: var(--color-primary);
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(var(--color-primary-rgb), 0.3);
  --shadow-glow-intense: 0 0 60px rgba(var(--color-primary-rgb), 0.5);
  
  /* Typography */
  --font-primary: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Font Sizes */
  --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;
  --font-size-6xl: 3.75rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 50%;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1010;
  --z-fixed: 1020;
  --z-modal-backdrop: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
  --z-toast: 1070;
}

/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: 1.5;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Selection Styles */
::selection {
  background: rgba(var(--color-primary-rgb), 0.3);
  color: var(--color-text-primary);
}

::-moz-selection {
  background: rgba(var(--color-primary-rgb), 0.3);
  color: var(--color-text-primary);
}

/* Scrollbar Styles */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

a:hover {
  color: var(--color-primary-light);
}

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Utility Classes */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.section-padding {
  padding: var(--spacing-4xl) 0;
  position: relative;
}

/* Add subtle section dividers */
.section-padding:not(:last-child)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0.3;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: var(--color-bg-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  z-index: var(--z-tooltip);
  transition: var(--transition-normal);
}

.skip-link:focus {
  top: 6px;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.fade-out {
  opacity: 0;
  visibility: hidden;
}

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

.silva-logo-loading {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  justify-content: center;
}

.logo-letter {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-primary);
  opacity: 0;
  transform: translateY(20px);
  animation: letterReveal 0.6s ease forwards;
}

.logo-letter:nth-child(1) { animation-delay: 0.1s; }
.logo-letter:nth-child(2) { animation-delay: 0.2s; }
.logo-letter:nth-child(3) { animation-delay: 0.3s; }
.logo-letter:nth-child(4) { animation-delay: 0.4s; }
.logo-letter:nth-child(5) { animation-delay: 0.5s; }

@keyframes letterReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.loading-bar {
  width: 200px;
  height: 4px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.loading-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  transform: translateX(-100%);
  animation: loadingProgress 2s ease-in-out forwards;
}

@keyframes loadingProgress {
  to {
    transform: translateX(0);
  }
}

.loading-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  opacity: 0;
  animation: fadeInUp 0.5s ease 1s forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-fixed);
  transition: var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(10, 10, 10, 0.98);
  box-shadow: var(--shadow-lg);
}

.navbar {
  padding: var(--spacing-md) 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}

.site-branding .brand-link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  color: var(--color-primary);
  text-decoration: none;
}

.brand-text {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  line-height: 1;
  text-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.5);
}

.brand-subtitle {
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-xs);
  letter-spacing: 0.05em;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  margin: 0;
  padding: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  font-weight: 500;
  position: relative;
}

.nav-link:hover {
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.nav-icon {
  font-size: var(--font-size-sm);
}

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

.theme-toggle {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
}

.theme-toggle:hover {
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--color-text-secondary);
  transition: var(--transition-normal);
  border-radius: var(--radius-sm);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Scroll Progress */
.scroll-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-border);
}

.scroll-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  width: 0%;
  transition: width 0.1s ease;
}

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

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 25% 25%, rgba(var(--color-primary-rgb), 0.1) 0%, transparent 50%),
              radial-gradient(circle at 75% 75%, rgba(255, 107, 107, 0.1) 0%, transparent 50%);
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-gradient);
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  space-y: var(--spacing-xl);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
}

.hero-title {
  margin-bottom: var(--spacing-lg);
}

.title-main {
  display: block;
  font-size: var(--font-size-6xl);
  font-weight: 900;
  color: var(--color-primary);
  text-shadow: 0 0 40px rgba(var(--color-primary-rgb), 0.5);
  line-height: 0.9;
  margin-bottom: var(--spacing-sm);
}

.title-sub {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: 400;
  color: var(--color-text-secondary);
  letter-spacing: 0.05em;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-xl);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-xs);
}

.stat-divider {
  width: 1px;
  height: 30px;
  background: var(--color-border);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.card-showcase {
  position: relative;
  width: 300px;
  height: 420px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.showcase-card {
  width: 250px;
  height: 350px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-slow);
  background: linear-gradient(145deg, var(--color-bg-card), #16213e);
  border: 2px solid rgba(var(--color-primary-rgb), 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.showcase-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.showcase-card.single-card {
  position: static;
}

.card-featured {
  z-index: 3;
  box-shadow: var(--shadow-glow);
}

.card-featured:hover {
  transform: scale(1.05) rotateY(5deg);
  box-shadow: var(--shadow-glow-intense);
}

.card-support {
  width: 200px;
  height: 280px;
}

.card-1 {
  z-index: 2;
  left: 0;
  top: 20%;
  transform: rotate(-15deg);
}

.card-2 {
  z-index: 1;
  right: 0;
  bottom: 20%;
  transform: rotate(15deg);
}

.card-support:hover {
  transform: scale(1.1) rotate(0deg);
}

.card-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  right: -50%;
  bottom: -50%;
  background: radial-gradient(circle, rgba(var(--color-primary-rgb), 0.3) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition-slow);
}

.showcase-card:hover .card-glow {
  opacity: 1;
}

.card-content {
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: var(--spacing-lg);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.card-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
}

.card-level {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.card-artwork {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.card-placeholder {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.7;
}

.card-placeholder.main {
  font-size: var(--font-size-3xl);
  text-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.5);
}

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

.card-description p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

/* Floating Elements */
.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
}

.floating-card {
  position: absolute;
  font-size: var(--font-size-xl);
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.floating-1 { top: 20%; left: 10%; animation-delay: 0s; }
.floating-2 { top: 60%; right: 15%; animation-delay: 1.5s; }
.floating-3 { bottom: 30%; left: 20%; animation-delay: 3s; }
.floating-4 { top: 40%; right: 30%; animation-delay: 4.5s; }

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-tertiary);
  animation: bounce 2s infinite;
}

.scroll-mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-text-tertiary);
  border-radius: 12px;
  position: relative;
}

.scroll-wheel {
  width: 2px;
  height: 8px;
  background: var(--color-text-tertiary);
  border-radius: 1px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-wheel 2s infinite;
}

@keyframes scroll-wheel {
  0% { top: 8px; opacity: 1; }
  100% { top: 24px; opacity: 0; }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

.scroll-text {
  font-size: var(--font-size-xs);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(45deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-bg-primary);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-bg-primary);
}

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

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

.btn-outline {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text-primary);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: var(--color-primary);
}

.btn-large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-xl);
}

.btn-glow {
  box-shadow: 0 0 30px rgba(var(--color-primary-rgb), 0.4);
}

.btn-glow:hover {
  box-shadow: 0 0 40px rgba(var(--color-primary-rgb), 0.6);
}

.btn-price {
  background: rgba(255, 255, 255, 0.2);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  margin-left: var(--spacing-sm);
}

/* About Section */
.about {
  background: var(--color-bg-secondary);
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 80% 20%, rgba(var(--color-primary-rgb), 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.game-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-4xl);
}

.game-info-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: var(--transition-normal);
  backdrop-filter: blur(10px);
}

.game-info-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.info-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  display: block;
}

.info-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.info-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.info-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin: 0;
}

.about-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--spacing-4xl);
  align-items: start;
}

.text-highlight {
  background: rgba(var(--color-primary-rgb), 0.1);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
  border-left: 4px solid var(--color-primary);
}

.text-highlight h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
}

.feature-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: rgba(26, 46, 26, 0.3);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(16, 185, 129, 0.2);
  transition: var(--transition-normal);
  align-items: flex-start;
  height: 100%;
}

.feature-item:hover {
  background: rgba(26, 46, 26, 0.5);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.feature-icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.feature-content {
  flex: 1;
}

.feature-content h4 {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.feature-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* Stats Container */
.stats-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
}

.stat-card .stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.stat-card .stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.stat-description {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* Testimonial */
.testimonial {
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.testimonial-content p {
  font-style: italic;
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.testimonial-author {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.author-name {
  font-weight: 600;
  color: var(--color-primary);
}

.author-title {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.rating {
  color: var(--color-accent);
}

.star {
  font-size: var(--font-size-sm);
}

/* Cards Section */
.cards {
  background: linear-gradient(135deg, #0d1b0d 0%, #1b2a1b 25%, #0d2a0d 75%, #1b0d1b 100%);
  position: relative;
  overflow: hidden;
}

.cards::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cards-filter {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-3xl);
  flex-wrap: wrap;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-normal);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-bg-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* レスポンシブ表示制御 */
.mobile-only {
  display: none;
}

.desktop-visible {
  display: block;
}

/* PC版用グリッドレイアウト（デフォルト） */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
}

/* PC版カード表示設定 */
.cards-grid-container {
  display: block !important;
  max-height: none !important;
  opacity: 1 !important;
  overflow: visible !important;
}

/* PC版用カード配置 */
.game-card:nth-child(1) { grid-column: 1; grid-row: 1; } /* ククノチ (10) */
.game-card:nth-child(2) { grid-column: 2; grid-row: 1; } /* 刀の少女 (9) */
.game-card:nth-child(3) { grid-column: 3; grid-row: 1; } /* 精霊 (8) */
.game-card:nth-child(4) { grid-column: 4; grid-row: 1; } /* 農家 (7) */
.game-card:nth-child(5) { grid-column: 5; grid-row: 1; } /* 枡職人 (6) */
.game-card:nth-child(6) { grid-column: 1; grid-row: 2; } /* 蔵人 (5) */
.game-card:nth-child(7) { grid-column: 2; grid-row: 2; } /* 戦士 (4) */
.game-card:nth-child(8) { grid-column: 3; grid-row: 2; } /* 偵察隊 (3) */
.game-card:nth-child(9) { grid-column: 4; grid-row: 2; } /* 訓練生 (2) */
.game-card:nth-child(10) { grid-column: 5; grid-row: 2; } /* 少年 (1) */
.game-card:nth-child(11) { grid-column: 6; grid-row: 2; } /* 幼きククノチ (0) */

.game-card {
  background: rgba(26, 46, 26, 0.95);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  backdrop-filter: blur(15px);
  min-height: 450px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(16, 185, 129, 0.1);
  position: relative;
}

.game-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-primary);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

/* シンプルなホバーエフェクト */

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
  background: rgba(255, 255, 255, 0.03);
}

.card-name {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.card-level {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
}

.character-name {
  display: none;
}

.card-effect {
  color: var(--color-success);
  font-weight: 600;
}

.card-artwork {
  flex: 1;
  min-height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  position: relative;
  overflow: hidden;
  padding: var(--spacing-md);
}

/* アートワークアニメーションを削除 */

.card-artwork img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: var(--radius-md);
  transition: transform 0.3s ease;
  display: block;
  margin: 0 auto;
}

.game-card:hover .card-artwork img {
  transform: scale(1.02);
}

.card-artwork .card-placeholder {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-primary);
  opacity: 0.7;
  text-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.5);
}

.card-description {
  padding: var(--spacing-lg);
  background: rgba(0, 0, 0, 0.5);
}

.card-description p {
  color: var(--color-text-primary);
  line-height: 1.6;
  margin: 0;
  font-size: var(--font-size-sm);
}

.cards-cta {
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.cta-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
}

.modal-content {
  position: relative;
  background: linear-gradient(145deg, var(--color-bg-card), #16213e);
  margin: 2% auto;
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 900px;
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-glow-intense);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: var(--transition-normal);
  z-index: 1;
}

.modal-close:hover {
  background: var(--color-primary);
  color: var(--color-bg-primary);
  transform: scale(1.1);
}

.close-icon {
  font-size: var(--font-size-xl);
  line-height: 1;
}

.modal-card-display {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-lg);
}

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

.card-3d-container {
  perspective: 1000px;
}

.card-3d {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: var(--radius-lg);
  transition: var(--transition-slow);
  transform-style: preserve-3d;
}

.card-3d:hover {
  transform: rotateY(10deg) rotateX(5deg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-primary);
}

.modal-title {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  margin: 0;
}

.modal-level {
  background: rgba(var(--color-primary-rgb), 0.2);
  color: var(--color-primary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.modal-details {
  space-y: var(--spacing-lg);
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.detail-item.description {
  margin-top: var(--spacing-lg);
}

.detail-label {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.detail-value {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: 500;
}

.detail-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  justify-content: center;
}

/* Rules Section */
.rules {
  background: var(--color-bg-secondary);
  position: relative;
}

.rules::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 70% 30%, rgba(255, 107, 107, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.rules-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto var(--spacing-3xl);
}

.rule-step {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
  position: relative;
}

.rule-step:last-child {
  margin-bottom: 0;
}

.step-number {
  position: relative;
  flex-shrink: 0;
}

.step-number .number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: linear-gradient(45deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-bg-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xl);
  font-weight: 800;
  box-shadow: var(--shadow-glow);
}

.step-connector {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100px;
  background: linear-gradient(180deg, var(--color-primary), transparent);
}

.rule-step:last-child .step-connector {
  display: none;
}

.step-content {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  backdrop-filter: blur(10px);
  transition: var(--transition-normal);
}

.step-content:hover {
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.08);
}

.step-icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
  display: block;
}

.step-title {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.step-description {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.step-tips {
  background: rgba(var(--color-primary-rgb), 0.1);
  border-left: 3px solid var(--color-primary);
  padding: var(--spacing-md);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.tip-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.tip-icon {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.rules-cta {
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
}

.cta-title {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.cta-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Purchase Section */
.purchase {
  background: var(--color-bg-primary);
  position: relative;
}

.purchase::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 70%, rgba(var(--color-primary-rgb), 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.purchase-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  justify-content: center;
  margin-bottom: var(--spacing-3xl);
}

.purchase-option {
  background: linear-gradient(145deg, var(--color-bg-card), #16213e);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  position: relative;
  transition: var(--transition-normal);
  max-width: 500px;
  width: 100%;
}

.purchase-option.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  transform: scale(1.05);
}

.purchase-option:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: var(--shadow-glow-intense);
}

.purchase-option.featured:hover {
  transform: translateY(-5px) scale(1.08);
}

.option-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(45deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-bg-primary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  box-shadow: var(--shadow-md);
}

.option-header {
  margin-bottom: var(--spacing-xl);
}

.option-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  display: block;
}

.option-title {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.option-subtitle {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.price-display {
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.price-main {
  font-size: var(--font-size-5xl);
  font-weight: 900;
  color: var(--color-text-primary);
  line-height: 1;
}

.price-tax {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-left: var(--spacing-sm);
}

.price-badge {
  display: inline-block;
  background: var(--color-success);
  color: var(--color-text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  margin-top: var(--spacing-sm);
}

.features-list {
  text-align: left;
  margin-bottom: var(--spacing-xl);
}

.features-list .feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.features-list .feature-item:last-child {
  border-bottom: none;
}

.feature-icon {
  color: var(--color-success);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.feature-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.purchase-actions {
  margin-bottom: var(--spacing-lg);
}

.purchase-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
  margin-top: var(--spacing-md);
}

.note-icon {
  color: var(--color-primary);
}

.purchase-info {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
}

.info-title {
  text-align: center;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-2xl);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.info-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  transition: var(--transition-normal);
}

.info-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.08);
}

.info-card .info-icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
  display: block;
}

.info-heading {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.info-text {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
  font-size: var(--font-size-sm);
}

/* Community Section */
.community {
  background: var(--color-bg-secondary);
  position: relative;
}

.community::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 60% 40%, rgba(255, 107, 107, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.community-content {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-4xl);
  align-items: start;
}

.info-content {
  margin-bottom: var(--spacing-xl);
}

.community-title {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-2xl);
}

.community-description {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.community-benefits {
  display: grid;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: var(--transition-normal);
}

.benefit-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-primary);
}

.benefit-icon {
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.benefit-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.community-links {
  display: grid;
  gap: var(--spacing-md);
}

.community-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.community-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: var(--transition-slow);
}

.community-link:hover::before {
  left: 100%;
}

.community-link:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-primary);
}

.community-link.discord:hover {
  border-color: #5865f2;
}

.community-link.twitter:hover {
  border-color: #1da1f2;
}

.community-link.website:hover {
  border-color: var(--color-success);
}

.link-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.link-icon svg {
  width: 100%;
  height: 100%;
}

.link-content {
  flex: 1;
}

.link-title {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-sm);
}

.link-description {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  line-height: 1.4;
}

.link-arrow {
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  transition: var(--transition-normal);
}

.community-link:hover .link-arrow {
  transform: translateX(4px);
}

.community-stats {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

.stats-title {
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-lg);
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.community-stats .stat-card {
  padding: var(--spacing-md);
}

.community-stats .stat-icon {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.community-stats .stat-number {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.community-stats .stat-label {
  font-size: var(--font-size-xs);
  margin-bottom: var(--spacing-sm);
}

.stat-trend {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--color-success);
}

.trend-icon {
  font-size: var(--font-size-xs);
}

.community-events {
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
}

.events-title {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
  text-align: center;
}

.event-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

.event-item:last-child {
  border-bottom: none;
}

.event-date {
  background: var(--color-primary);
  color: var(--color-bg-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  flex-shrink: 0;
}

.event-info {
  flex: 1;
}

.event-name {
  display: block;
  color: var(--color-text-primary);
  font-weight: 500;
  font-size: var(--font-size-xs);
  margin-bottom: var(--spacing-xs);
}

.event-desc {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
}

/* Footer */
.site-footer {
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 0%, rgba(var(--color-primary-rgb), 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
  position: relative;
}

.footer-section.brand {
  grid-column: 1 / -1;
}

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

.footer-title {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  text-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.3);
}

.footer-tagline {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
  margin: 0;
}

.footer-description {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: var(--transition-normal);
}

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

.social-link.twitter:hover {
  background: #1da1f2;
  border-color: #1da1f2;
}

.social-link.discord:hover {
  background: #5865f2;
  border-color: #5865f2;
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.footer-heading {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: var(--transition-normal);
  font-size: var(--font-size-sm);
}

.footer-links a:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

.footer-text {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
}

.footer-badges {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.badge {
  background: rgba(var(--color-primary-rgb), 0.2);
  color: var(--color-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
  font-weight: 500;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-xl);
  position: relative;
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.copyright p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: var(--font-size-sm);
}

.sub-text {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
}

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

.legal-link {
  color: var(--color-text-tertiary);
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: var(--transition-normal);
}

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

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: var(--color-bg-primary);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-normal);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

.back-to-top-text {
  font-size: var(--font-size-xs);
  font-weight: 600;
}

/* Floating Action Button */
.fab-container {
  position: fixed;
  bottom: var(--spacing-xl);
  left: var(--spacing-xl);
  z-index: var(--z-fixed);
}

.fab-main {
  width: 56px;
  height: 56px;
  background: linear-gradient(45deg, var(--color-primary), var(--color-primary-light));
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
  position: relative;
  z-index: 2;
}

.fab-main:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

.fab-main .fab-icon {
  font-size: var(--font-size-xl);
  color: var(--color-bg-primary);
}

.fab-menu {
  position: absolute;
  bottom: 70px;
  left: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-normal);
}

.fab-menu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.fab-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: var(--transition-normal);
  white-space: nowrap;
  box-shadow: var(--shadow-md);
}

.fab-item:hover {
  background: var(--color-primary);
  color: var(--color-bg-primary);
  transform: translateX(-4px);
}

.fab-item .fab-icon {
  font-size: var(--font-size-lg);
}

.fab-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* Responsive Design */
@media (max-width: 1200px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
  
  .hero-container {
    gap: var(--spacing-2xl);
  }
  
  .card-showcase {
    width: 350px;
    height: 450px;
  }
}

@media (max-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
  }
  
  /* Adjust card positioning for medium screens */
  .game-card:nth-child(6) { grid-column: 6; grid-row: 1; } /* Move card 6 to first row */
  .game-card:nth-child(11) { grid-column: 5; grid-row: 2; } /* Adjust last card position */
}

@media (max-width: 768px) {
  :root {
    --font-size-6xl: 2.5rem;
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
  }

  /* モバイル用レスポンシブ表示制御 */
  .mobile-only {
    display: block;
  }
  
  .desktop-visible {
    display: block;
  }
  
  /* 改善されたモバイルナビゲーション */
  .nav-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    z-index: 999;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }
  
  .nav-menu.active {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    animation: slideDownFade 0.3s ease-out;
  }
  
  .nav-item {
    width: 100%;
  }
  
  .nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    background: rgba(26, 26, 26, 0.8);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
    min-height: 60px;
  }
  
  .nav-link:hover {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--color-primary);
    transform: translateY(-2px);
  }
  
  .nav-icon {
    font-size: 1.5rem;
    min-width: 32px;
  }
  
  .nav-text {
    font-size: var(--font-size-lg);
    font-weight: 500;
  }
  
  .mobile-menu-toggle {
    display: flex;
    position: relative;
    z-index: 1000;
  }
  
  .mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  @keyframes slideDownFade {
    from {
      opacity: 0;
      transform: translateY(-20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* 改善されたヒーローセクション */
  .hero {
    padding-top: 100px; /* ヘッダー高さ分のパディング */
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .hero-visual {
    order: -1;
    margin-bottom: var(--spacing-lg);
  }
  
  .hero-title {
    margin-bottom: var(--spacing-lg);
  }
  
  .title-main {
    font-size: 3rem;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
  }
  
  .title-sub {
    font-size: 1.2rem;
    opacity: 0.9;
  }
  
  .hero-description {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 100%;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
    min-height: 56px;
    font-size: var(--font-size-lg);
    justify-content: center;
  }
  
  .btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    box-shadow: 0 8px 16px rgba(16, 185, 129, 0.3);
  }
  
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(16, 185, 129, 0.4);
  }
  
  .card-showcase {
    width: 300px;
    height: 400px;
  }
  
  .showcase-card {
    width: 200px;
    height: 280px;
  }
  
  .card-support {
    width: 160px;
    height: 220px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .stat-divider {
    width: 100%;
    height: 1px;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .game-info-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  /* カード一覧トグルボタン - タブレット */
  .cards-toggle-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
  }
  
  .cards-toggle-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    border: none;
    border-radius: var(--border-radius-xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 56px;
    box-shadow: 0 8px 16px rgba(16, 185, 129, 0.3);
  }
  
  .cards-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(16, 185, 129, 0.4);
  }
  
  .cards-toggle-btn.active .toggle-arrow {
    transform: rotate(180deg);
  }
  
  .toggle-icon {
    font-size: 2rem;
  }
  
  .toggle-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
  }
  
  .toggle-arrow {
    transition: transform 0.3s ease;
    font-size: 1.2rem;
    font-weight: bold;
  }
  
  /* モバイル版カードコンテナ（トグル機能） */
  .cards-grid-container {
    display: none !important;
    overflow: hidden;
    transition: all 0.6s ease;
    max-height: 0;
    opacity: 0;
  }
  
  .cards-grid-container.show {
    display: block !important;
    max-height: none;
    opacity: 1;
    overflow: visible;
    animation: slideDown 0.6s ease-out;
  }

  /* モバイル版横スクロールカードグリッド */
  .cards-grid {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) var(--spacing-md);
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) transparent;
  }
  
  .cards-grid::-webkit-scrollbar {
    height: 8px;
  }
  
  .cards-grid::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
  }
  
  .cards-grid::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 4px;
  }
  
  .cards-grid::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
  }
  
  /* Reset card positioning on tablet - allow natural flow */
  .game-card:nth-child(n) {
    grid-column: auto;
    grid-row: auto;
  }
  
  .game-card {
    min-height: 420px;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    position: relative;
    width: 300px;
    min-width: 300px;
    flex-shrink: 0;
    scroll-snap-align: start;
  }
  
  .game-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
  }
  
  .game-card:active {
    transform: translateY(-3px);
  }
  
  .card-artwork {
    min-height: 220px;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-md);
  }
  
  .card-artwork img {
    transition: transform 0.4s ease;
  }
  
  .game-card:hover .card-artwork img {
    transform: scale(1.05);
  }
  
  .card-name {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
  }
  
  .card-description {
    font-size: var(--font-size-sm);
    line-height: 1.5;
    opacity: 0.9;
  }
  
  .cards-filter {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }
  
  .modal-content {
    margin: 5% auto;
    padding: var(--spacing-lg);
  }
  
  .modal-card-display {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .rule-step {
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
  }
  
  .step-connector {
    display: none;
  }
  
  .purchase-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-md);
  }
  
  .purchase-option {
    padding: var(--spacing-lg);
    width: 100%;
    max-width: none;
  }
  
  .info-grid {
    grid-template-columns: 1fr;
  }
  
  .community-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-section.brand {
    grid-column: auto;
  }
  
  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
  }
  
  .fab-container {
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
  }
  
  .back-to-top {
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .section-padding {
    padding: var(--spacing-2xl) 0;
  }
  
  /* スマートフォン用の最適化されたタイポグラフィ */
  .title-main {
    font-size: 2.5rem !important;
    line-height: 1.1;
  }
  
  .title-sub {
    font-size: 1rem !important;
  }
  
  .hero-description {
    font-size: var(--font-size-base) !important;
    line-height: 1.6;
    padding: 0 var(--spacing-sm);
  }
  
  .section-title {
    font-size: var(--font-size-3xl) !important;
    margin-bottom: var(--spacing-lg);
  }
  
  .section-description {
    font-size: var(--font-size-base);
    line-height: 1.6;
  }
  
  /* スマートフォン用ヒーローセクション */
  .hero {
    padding-top: 120px; /* スマートフォン用ヘッダー高さ分のパディング */
  }
  
  .hero-container {
    padding: var(--spacing-md);
    gap: var(--spacing-lg);
  }
  
  .hero-stats {
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
  }
  
  .card-showcase {
    width: 280px;
    height: 360px;
    margin: 0 auto;
  }
  
  .showcase-card {
    width: 180px;
    height: 250px;
  }
  
  .card-support {
    width: 140px;
    height: 190px;
  }
  
  /* スマートフォン用カードフィルター */
  .cards-filter {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-xl);
  }
  
  .filter-btn {
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  /* スマートフォン用カード最適化 */
  .game-card {
    width: 260px;
    min-width: 260px;
    min-height: 380px;
  }
  
  .cards-grid {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .card-artwork {
    min-height: 200px;
    font-size: var(--font-size-base);
    min-height: 48px;
    border-radius: var(--border-radius-xl);
    transition: all 0.3s ease;
  }
  
  .filter-btn:active {
    transform: scale(0.98);
  }
  
  /* カード一覧トグルボタン - スマートフォン */
  .cards-toggle-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    padding: 0 var(--spacing-md);
  }
  
  .cards-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl) var(--spacing-2xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    border: none;
    border-radius: var(--border-radius-xl);
    font-size: var(--font-size-xl);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 80px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 12px 32px rgba(16, 185, 129, 0.5);
  }
  
  .cards-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(16, 185, 129, 0.4);
  }
  
  .cards-toggle-btn:active {
    transform: scale(0.98);
  }
  
  .cards-toggle-btn.active .toggle-arrow {
    transform: rotate(180deg);
  }
  
  .toggle-icon {
    font-size: 2rem;
  }
  
  .toggle-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
  }
  
  .toggle-arrow {
    transition: transform 0.3s ease;
    font-size: 1.2rem;
    font-weight: bold;
  }
  
  .cards-grid-container {
    overflow: hidden;
    transition: all 0.6s ease;
    max-height: 0;
    opacity: 0;
  }
  
  .cards-grid-container.show {
    max-height: none;
    opacity: 1;
    overflow: visible;
    animation: slideDown 0.6s ease-out;
  }
  
  .cards-scroll-hint {
    text-align: center;
    padding: var(--spacing-md) 0;
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    opacity: 0.9;
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(16, 185, 129, 0.2);
  }
  
  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* スマートフォン用カードグリッド - 横スクロール */
  .cards-grid {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) var(--spacing-md);
    width: 100%;
    min-height: auto;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  
  .cards-grid::-webkit-scrollbar {
    display: none;
  }
  
  /* Reset card positioning on mobile - single column */
  .game-card:nth-child(n) {
    grid-column: auto;
    grid-row: auto;
  }
  
  .game-card {
    min-height: 400px;
    padding: var(--spacing-lg);
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-xl);
    transition: all 0.3s ease;
    width: 280px;
    min-width: 280px;
    flex-shrink: 0;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    scroll-snap-align: start;
  }
  
  .game-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
    border-color: var(--color-primary);
  }
  
  .game-card:active {
    transform: translateY(-2px);
  }
  
  .card-header {
    margin-bottom: var(--spacing-md);
  }
  
  .card-name {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
  }
  
  .card-level {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin-bottom: var(--spacing-md);
  }
  
  .card-artwork {
    min-height: 200px;
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
  }
  
  .card-artwork img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
  }
  
  .card-description {
    font-size: var(--font-size-sm);
    line-height: 1.6;
  }
  
  .card-description p {
    color: var(--color-text-primary);
  }
  
  /* スマートフォン用モーダル */
  .modal-content {
    width: 96%;
    margin: 2% auto;
    padding: var(--spacing-md);
    max-height: 96vh;
    overflow-y: auto;
    border-radius: var(--border-radius-lg);
  }
  
  .modal-card-display {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  /* モバイル版カード画像のサイズ調整 */
  .card-3d {
    max-width: 200px;
    max-height: 250px;
  }
  
  /* モバイル版モーダル文字サイズ調整 */
  .modal-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
  }
  
  .detail-item {
    margin-bottom: var(--spacing-sm);
  }
  
  .detail-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
  }
  
  .detail-value {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
  }
  
  .detail-description {
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--color-text-primary);
  }
    gap: var(--spacing-lg);
  }
  
  .modal-card-image {
    max-height: 300px;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
  }
  
  .modal-actions {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  /* スマートフォン用購入セクション */
  .purchase-container {
    grid-template-columns: 1fr !important;
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-md);
    max-width: 100%;
    overflow: hidden;
  }
  
  .purchase-option {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius-xl);
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(10px);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
  }
  
  .purchase-option.featured {
    transform: none;
    margin-bottom: var(--spacing-lg);
  }
  
  .price-main {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
  }
  
  .features-list {
    margin: var(--spacing-lg) 0;
  }
  
  .feature-item {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .feature-item:last-child {
    border-bottom: none;
  }
  
  .feature-text {
    font-size: var(--font-size-sm);
    line-height: 1.5;
  }
  
  /* ボタンの改善 */
  .hero-buttons {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    width: 100%;
  }
  
  .cta-buttons {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .btn {
    min-height: 56px;
    font-size: var(--font-size-lg);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    font-weight: 600;
    transition: all 0.3s ease;
  }
  
  .btn:active {
    transform: scale(0.98);
  }
  
  /* タッチターゲットの改善 */
  .nav-link,
  .btn,
  .filter-btn,
  .game-card {
    min-height: 44px;
  }
  
  /* フォーカス状態の改善 */
  .nav-link:focus,
  .btn:focus,
  .filter-btn:focus,
  .game-card:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
  }
  
  /* セーフエリア対応 */
  .hero-container,
  .container {
    padding-left: max(var(--spacing-md), env(safe-area-inset-left));
    padding-right: max(var(--spacing-md), env(safe-area-inset-right));
  }
  
  .nav-menu {
    padding-bottom: max(var(--spacing-lg), env(safe-area-inset-bottom));
  }
  
  /* スマートフォン用モーダル最適化 */
  .modal-content {
    width: 98%;
    margin: 1% auto;
    padding: var(--spacing-sm);
    max-height: 98vh;
    overflow-y: auto;
  }
  
  .modal-header {
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
  }
  
  .modal-title {
    font-size: var(--font-size-base);
  }
  
  .modal-level {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs);
  }
  
  .card-3d {
    max-width: 160px;
    max-height: 200px;
  }
  
  .detail-item {
    margin-bottom: var(--spacing-xs);
  }
  
  .detail-label {
    font-size: var(--font-size-xs);
  }
  
  .detail-value {
    font-size: var(--font-size-xs);
  }
  
  .detail-description {
    font-size: var(--font-size-xs);
    line-height: 1.4;
  }
  
  .modal-actions {
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
  }
  
  .modal-actions .btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    min-height: 40px;
  }
}

/* Print Styles */
@media print {
  .site-header,
  .scroll-indicator,
  .floating-elements,
  .back-to-top,
  .fab-container,
  .loading-screen {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .hero {
    background: none !important;
    color: black !important;
    min-height: auto !important;
  }
  
  a {
    color: black !important;
    text-decoration: underline !important;
  }
  
  .section-title::after {
    background: black !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --color-bg-primary: #000000;
    --color-bg-secondary: #111111;
    --color-text-primary: #ffffff;
    --color-text-secondary: #ffffff;
    --color-border: #ffffff;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .floating-card {
    animation: none !important;
  }
  
  .scroll-indicator {
    animation: none !important;
  }
}