:root {
  --bg-dark: #090d16;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(56, 189, 248, 0.3);
  --primary: #38bdf8;
  --primary-glow: rgba(56, 189, 248, 0.4);
  --accent-mint: #34d399;
  --accent-amber: #f59e0b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  background-image: 
    radial-gradient(circle at 20% 15%, rgba(56, 189, 248, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(52, 211, 153, 0.10) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.8) 0%, var(--bg-dark) 100%);
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ──────── Navigation ──────── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.8);
  border-bottom: 1px solid var(--border-color);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #38bdf8, #34d399);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 0 20px var(--primary-glow);
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: #ffffff;
}

.brand-text span {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

.btn-nav {
  padding: 10px 20px;
  background: linear-gradient(135deg, #38bdf8, #0284c7);
  color: #0f172a !important;
  font-weight: 800 !important;
  border-radius: 10px;
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease !important;
}

.btn-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.5) !important;
}

/* ──────── Hero ──────── */
.hero {
  padding: 90px 0 60px;
  text-align: center;
  position: relative;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}

.hero h2 {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 36px;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  background: linear-gradient(135deg, #38bdf8, #0284c7);
  color: #090d16;
  font-size: 1.05rem;
  font-weight: 800;
  border-radius: 14px;
  text-decoration: none;
  box-shadow: 0 10px 25px rgba(56, 189, 248, 0.4);
  transition: all 0.25s ease;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(56, 189, 248, 0.6);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 30px;
  background: var(--bg-card);
  color: #ffffff;
  border: 1px solid var(--border-color);
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: 14px;
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-3px);
}

/* ──────── Interactive Demo Preview ──────── */
.game-preview {
  margin: 50px auto 0;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 24px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(56, 189, 248, 0.15);
  backdrop-filter: blur(12px);
}

.board-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 18px;
  background: rgba(15, 23, 42, 0.9);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.arrow-tile {
  aspect-ratio: 1;
  background: rgba(30, 41, 59, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  user-select: none;
}

.arrow-tile:hover {
  transform: scale(1.08);
  border-color: var(--primary);
  box-shadow: 0 0 16px var(--primary-glow);
}

.arrow-tile.escaped {
  transform: translateY(-80px) scale(0);
  opacity: 0;
  pointer-events: none;
}

/* ──────── Features ──────── */
.features {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h3 {
  font-size: 2.4rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 36px 30px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 24px;
}

.feature-card h4 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* ──────── Legal & Privacy Layout ──────── */
.legal-page {
  padding: 60px 0 100px;
}

.legal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 48px;
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.legal-card h1 {
  font-size: 2.6rem;
  font-weight: 900;
  margin-bottom: 8px;
  color: #ffffff;
}

.legal-meta {
  color: var(--primary);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 36px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.legal-content h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 36px 0 16px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.legal-content p, .legal-content li {
  color: #cbd5e1;
  font-size: 1.02rem;
  line-height: 1.75;
  margin-bottom: 16px;
}

.legal-content ul {
  padding-left: 24px;
  margin-bottom: 20px;
}

.legal-content a {
  color: var(--primary);
  text-decoration: underline;
}

.badge-privacy {
  background: rgba(52, 211, 153, 0.15);
  border: 1px solid rgba(52, 211, 153, 0.35);
  color: var(--accent-mint);
  padding: 4px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 700;
}

/* ──────── Footer ──────── */
footer {
  border-top: 1px solid var(--border-color);
  background: rgba(9, 13, 22, 0.95);
  padding: 50px 0 30px;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--primary);
}

.copyright {
  color: #64748b;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .hero h2 {
    font-size: 2.4rem;
  }
  .legal-card {
    padding: 28px 20px;
  }
  .nav-links {
    display: none;
  }
}