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

:root {
  --primary-color: #00a8ff;
  --secondary-color: #003366;
  --dark-bg: #0a0a0a;
  --card-bg: #000000;
  --text-primary: #ffffff;
  --text-secondary: #ffffff;
  --accent-glow: rgba(0, 168, 255, 0.3);
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background 0.3s ease;
  padding: 1rem 0;
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 168, 255, 0.1);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

.nav-logo img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

.nav-menu {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--primary-color);
  transition: all 0.3s ease;
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 2rem 2rem;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, var(--dark-bg), transparent 50%);
  opacity: 0.3;
  pointer-events: none;
}

.hero-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  animation: float 6s ease-in-out infinite;
}

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

.hero-content h1 {
  font-size: 4rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary-color), #0066cc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-block;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
  box-shadow: 0 4px 20px rgba(0, 168, 255, 0.4);
}

.btn-primary:hover {
  background: #0088cc;
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(0, 168, 255, 0.6);
}

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

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

/* Info Section */
.info-section {
  padding: 6rem 2rem;
  background: linear-gradient(180deg, var(--dark-bg) 0%, var(--dark-bg) 100%);
}

.info-container {
  max-width: 1400px;
  margin: 0 auto;
}

.section-title {
  font-size: 3rem;
  text-align: center;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, var(--primary-color), white);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.video-container {
  margin-bottom: 4rem;
}

.video-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 168, 255, 0.3);
}

.video-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: none;
  border: none;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.play-button:hover {
  transform: translate(-50%, -50%) scale(1.1);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid rgba(0, 168, 255, 0.1);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: 0 10px 40px rgba(0, 168, 255, 0.2);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Download Section */
.download-section {
  padding: 6rem 2rem;
  background: var(--dark-bg);
}

.download-container {
  max-width: 1400px;
  margin: 0 auto;
}

.download-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 4rem;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.download-card {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 20px;
  text-align: center;
  border: 2px solid rgba(0, 168, 255, 0.1);
  transition: all 0.3s ease;
}

.download-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: 0 15px 50px rgba(0, 168, 255, 0.3);
}

.download-icon {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.download-card h3 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.download-card p {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.download-size {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.btn-download {
  width: 100%;
  background: var(--primary-color);
  color: white;
}

.btn-download:hover {
  background: #0088cc;
}

.system-requirements {
  background: var(--card-bg);
  padding: 3rem;
  border-radius: 20px;
  border: 1px solid rgba(0, 168, 255, 0.1);
}

.system-requirements h3 {
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--primary-color);
}

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.requirement h4 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.requirement ul {
  list-style: none;
}

.requirement li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Footer */
.footer {
  background: var(--dark-bg);
  padding: 4rem 2rem 2rem;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h4 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.footer-section p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: 0.75rem;
}

.footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    flex-direction: column;
    background: rgba(10, 10, 10, 0.98);
    width: 100%;
    padding: 2rem;
    transition: left 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  }

  .nav-menu.active {
    left: 0;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .download-grid {
    grid-template-columns: 1fr;
  }

  .requirements-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}