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

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-card-hover: #232b3f;
  --accent: #24d4ff;
  --accent-dim: rgba(36, 212, 255, 0.15);
  --accent-glow: rgba(36, 212, 255, 0.3);
  --purple: #7c3aed;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #1e293b;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

.noise {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

.container {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero {
  text-align: center;
  padding: 40px 0 20px;
  animation: fadeInDown 0.8s ease-out;
}

.logo-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.logo {
  width: 140px;
  height: 140px;
  object-fit: contain;
  border-radius: 24px;
  box-shadow: 0 0 40px var(--accent-glow), 0 0 80px rgba(124, 58, 237, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background: var(--bg-card);
  padding: 8px;
}

.logo:hover {
  transform: scale(1.05);
  box-shadow: 0 0 60px var(--accent-glow), 0 0 100px rgba(124, 58, 237, 0.15);
}

.company-name {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.accent {
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.badge {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(36, 212, 255, 0.25);
  animation: pulse 2s ease-in-out infinite;
}

.message-section {
  text-align: center;
  padding: 40px 0;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.tagline {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.contact-section {
  text-align: center;
  padding: 12px 0 32px;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.contact-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
  box-shadow: 0 0 30px var(--accent-glow);
}

.game-section {
  width: 100%;
  max-width: 520px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 16px 0 40px;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.game-title {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
}

.game-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.game-stats {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.btn-reset {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-reset:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.game-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.game-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  perspective: 800px;
}

.card {
  aspect-ratio: 1;
  position: relative;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: var(--radius-sm);
}

.card.flipped {
  transform: rotateY(180deg);
}

.card.matched {
  animation: matchPop 0.5s ease;
  pointer-events: none;
}

.card-face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  backface-visibility: hidden;
  font-size: 1.6rem;
  font-weight: 700;
  border: 2px solid var(--border);
  transition: border-color 0.3s;
}

.card-back {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border-color: var(--border);
}

.card-back::after {
  content: '?';
  font-size: 1.4rem;
  color: var(--text-muted);
  font-weight: 700;
}

.card:hover .card-back {
  border-color: var(--accent);
}

.card-face.card-front {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--accent);
  transform: rotateY(180deg);
  box-shadow: 0 0 15px var(--accent-glow);
}

.card.matched .card-front {
  background: rgba(36, 212, 255, 0.08);
  border-color: var(--accent);
}

.game-win {
  display: none;
  text-align: center;
  padding: 24px 16px 8px;
  animation: fadeInUp 0.5s ease;
}

.game-win h3 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.game-win p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.game-win .btn-reset {
  font-size: 0.9rem;
  padding: 10px 28px;
}

.footer {
  text-align: center;
  padding: 24px 0;
  margin-top: auto;
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.8rem;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes matchPop {
  0% { transform: rotateY(180deg) scale(1); }
  50% { transform: rotateY(180deg) scale(1.12); }
  100% { transform: rotateY(180deg) scale(1); }
}

@media (max-width: 600px) {
  .container {
    padding: 24px 16px;
  }

  .logo {
    width: 100px;
    height: 100px;
    padding: 6px;
  }

  .game-section {
    padding: 20px 16px;
  }

  .game-board {
    gap: 8px;
  }

  .card-face {
    font-size: 1.3rem;
  }

  .game-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .game-controls {
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 400px) {
  .game-board {
    gap: 6px;
  }
}