:root {
  --primary: #0d6e3f;
  --primary-dark: #09522e;
  --primary-light: #e7f5ee;
  --secondary: #1a8a5a;
  --accent: #d4a017;
  --accent-dark: #b8860b;
  --success: #2e7d32;
  --warning: #f9a825;
  --error: #c62828;
  --text: #1a1a1a;
  --text-light: #555;
  --border: #e0e0e0;
  --bg: #fafafa;
  --card-bg: #ffffff;
  --header-bg: #ffffff;
  --footer-bg: #0d6e3f;
  --footer-text: #ffffff;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 20px rgba(0,0,0,0.12);
  --transition: 0.25s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }

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

.logo-round { border-radius: 50%; object-fit: cover; }

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

/* Header */
.site-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.site-logo img { width: 40px; height: 40px; }
.site-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}
.main-nav { display: flex; gap: 20px; align-items: center; }
.main-nav a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary-light) 0%, #ffffff 100%);
  padding: 40px 0;
  text-align: center;
}
.hero-inner { max-width: 800px; }
.hero-logo { margin: 0 auto 16px; width: 100px; height: 100px; }
.hero h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.3;
  margin-bottom: 12px;
}
.hero-subtitle { color: var(--text-light); font-size: 1.05rem; margin-bottom: 20px; }
.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.hero-features span {
  background: var(--card-bg);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary-dark);
  border: 1px solid var(--border);
}

/* Sections */
.content-section { padding: 28px 16px; }
.content-section h2 {
  font-size: 1.4rem;
  color: var(--primary-dark);
  margin-bottom: 14px;
  line-height: 1.3;
}
.content-section h3 {
  font-size: 1.15rem;
  color: var(--text);
  margin: 18px 0 10px;
}
.content-section p { margin-bottom: 14px; color: var(--text); }
.section-title { text-align: center; font-size: 1.5rem; color: var(--primary-dark); margin: 30px 0 20px; }

/* Game grid */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  padding: 0 0 30px;
}
.game-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.game-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.game-card-logo img { width: 80px; height: 80px; margin-bottom: 12px; }
.game-card h3 { font-size: 1.05rem; color: var(--primary-dark); margin-bottom: 6px; }
.game-card p { font-size: 0.85rem; color: var(--text-light); margin-bottom: 12px; flex-grow: 1; }
.card-btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 8px 18px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
}
.card-btn:hover { background: var(--primary-dark); color: #fff; }

/* Download button */
.download-btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  margin: 10px 0;
}
.download-btn:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: scale(1.03);
}
.download-btn.btn-large { padding: 14px 36px; font-size: 1.1rem; }

/* Game page */
.game-hero {
  background: linear-gradient(135deg, var(--primary-light) 0%, #ffffff 100%);
  padding: 30px 0;
}
.game-hero-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.game-hero-logo img { width: 100px; height: 100px; }
.game-hero-text { flex: 1; min-width: 250px; }
.game-hero-text h1 {
  font-size: 1.6rem;
  color: var(--primary-dark);
  margin-bottom: 8px;
  line-height: 1.3;
}
.game-tagline { color: var(--text-light); font-size: 1rem; margin-bottom: 14px; }

.game-image-section { padding: 20px 0; }
.game-image-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow);
  text-align: center;
}
.game-image {
  max-width: 100%;
  border-radius: 4px;
  margin: 0 auto;
}

/* Lists */
.features-list, .rules-list, .step-list { margin: 12px 0 16px 20px; }
.features-list li, .rules-list li { margin-bottom: 8px; color: var(--text); }
.step-list { margin-left: 22px; }
.step-list li { margin-bottom: 8px; color: var(--text); }

.related-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0;
}
.related-links li { margin: 0; }
.related-links a {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
}
.related-links a:hover { background: var(--primary); color: #fff; }

/* FAQ */
.faq-list { margin: 16px 0; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  padding: 0;
  overflow: hidden;
}
.faq-item summary {
  padding: 14px 18px;
  font-weight: 600;
  cursor: pointer;
  color: var(--primary-dark);
  font-size: 0.98rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::after { content: '+'; font-size: 1.3rem; color: var(--primary); }
.faq-item[open] summary::after { content: '\2212'; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { padding: 0 18px 14px; color: var(--text); }

/* Footer */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 36px 0 16px;
  margin-top: 30px;
}
.footer-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}
.footer-col h3 {
  font-size: 1rem;
  margin-bottom: 12px;
  color: #fff;
}
.footer-col p { font-size: 0.88rem; color: rgba(255,255,255,0.85); line-height: 1.5; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 6px; }
.footer-col ul a { color: rgba(255,255,255,0.85); font-size: 0.88rem; }
.footer-col ul a:hover { color: #fff; }
.footer-col img { margin-bottom: 10px; width: 48px; height: 48px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.2);
  padding-top: 16px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
}
.footer-links a { color: rgba(255,255,255,0.85); }
.footer-links a:hover { color: #fff; }

/* Back to top */
#backToTop {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
  z-index: 99;
}
#backToTop.show { opacity: 1; visibility: visible; }
#backToTop:hover { background: var(--primary-dark); }

/* Responsive */
@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 64px;
    right: 0;
    width: 240px;
    height: calc(100vh - 64px);
    background: var(--header-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
    gap: 16px;
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: -2px 0 10px rgba(0,0,0,0.1);
    overflow-y: auto;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav a { width: 100%; border-bottom: 1px solid var(--border); padding: 8px 0; }
  .hero h1 { font-size: 1.5rem; }
  .game-hero-text h1 { font-size: 1.3rem; }
  .content-section h2 { font-size: 1.25rem; }
  .game-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.3rem; }
  .hero-subtitle { font-size: 0.95rem; }
  .game-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .game-card { padding: 14px; }
  .game-card h3 { font-size: 0.95rem; }
  .game-card p { font-size: 0.78rem; }
  .download-btn { padding: 10px 22px; font-size: 0.95rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .container { padding: 0 12px; }
}