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

body {
  font-family: 'Arial', sans-serif;
  background: linear-gradient(135deg, #0f4c75 0%, #3282b8 50%, #1e6091 100%);
  min-height: 100vh;
  color: #333;
  overflow-x: hidden;
}

header {
  background: linear-gradient(45deg, #1e6091, #16a085, #27ae60, #2ecc71);
  background-size: 400% 400%;
  animation: gradientShift 8s ease infinite;
  padding: 1rem 0;
  position: relative;
  overflow: hidden;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 2rem;
  font-weight: bold;
  color: white;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: transform 0.3s ease, text-shadow 0.3s ease;
}

.nav-links a:hover {
  transform: translateY(-2px);
  text-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.hero {
  max-width: 1200px;
  margin: 4rem auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.2rem;
  color: white;
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
  animation: slideInLeft 1s ease-out;
  font-weight: 700;
  line-height: 1.2;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-content p {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 2rem;
  line-height: 1.6;
  animation: slideInLeft 1s ease-out 0.3s both;
  font-weight: 400;
}

.cta-button {
  background: linear-gradient(45deg, #16a085, #27ae60);
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: none;
  letter-spacing: 0.5px;
  animation: slideInLeft 1s ease-out 0.6s both;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(22,160,133,0.4);
}

.phone-image {
  text-align: center;
  animation: slideInRight 1s ease-out;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.phone-mockup {
  width: 300px;
  height: 600px;
  background: linear-gradient(135deg, #1e3c72, #2a5298);
  border-radius: 30px;
  margin: 0 auto;
  position: relative;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.phone-screen {
  width: 260px;
  height: 520px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 20px;
  position: absolute;
  top: 40px;
  left: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  font-weight: bold;
}

.features {
  max-width: 1200px;
  margin: 6rem auto;
  padding: 0 2rem;
}

.features h2 {
  text-align: center;
  font-size: 2.5rem;
  color: white;
  margin-bottom: 3rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

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

.feature-card {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 2rem;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid rgba(255,255,255,0.2);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

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

.feature-card h3 {
  color: white;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.feature-card p {
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
}

.specs {
  max-width: 1200px;
  margin: 6rem auto;
  padding: 0 2rem;
}

.specs h2 {
  text-align: center;
  font-size: 2.5rem;
  color: white;
  margin-bottom: 3rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.specs-container {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 3rem;
  border: 1px solid rgba(255,255,255,0.2);
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: rgba(255,255,255,0.05);
  border-radius: 10px;
  border-left: 4px solid #16a085;
}

.spec-label {
  color: rgba(255,255,255,0.8);
  font-weight: 500;
}

.spec-value {
  color: white;
  font-weight: bold;
}

footer {
  background: rgba(0,0,0,0.3);
  color: white;
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
}

.content-section {
  max-width: 1200px;
  margin: 4rem auto;
  padding: 0 2rem;
}

.content-section h2 {
  color: white;
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 2rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.content-section p {
  color: rgba(255,255,255,0.9);
  font-size: 1.2rem;
  line-height: 1.8;
  margin-bottom: 2rem;
  text-align: center;
}

.linux-features {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: 15px;
  display: grid;
  gap: 1.5rem;
}

.linux-feature {
  color: rgba(255,255,255,0.9);
  font-size: 1.1rem;
  position: relative;
  padding-left: 1.5rem;
}

.linux-feature::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: #2ecc71;
  font-weight: bold;
}

.back-button {
  margin-top: 3rem;
  display: block;
  text-align: center;
}

.back-button a {
  background: linear-gradient(45deg, #16a085, #27ae60);
  color: white;
  padding: 1rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 600;
  transition: all 0.3s ease;
}

.back-button a:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(22,160,133,0.4);
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

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

  .nav-links {
    flex-direction: column;
    gap: 1rem;
  }

  .phone-mockup {
    width: 250px;
    height: 500px;
  }

  .phone-screen {
    width: 210px;
    height: 420px;
    font-size: 1.2rem;
  }

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

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-content p {
    font-size: 1.1rem;
  }

  .phone-mockup {
    width: 200px;
    height: 400px;
  }

  .phone-screen {
    width: 160px;
    height: 320px;
    font-size: 1rem;
  }

  nav {
    flex-direction: column;
    gap: 1rem;
  }

  .logo {
    font-size: 1.5rem;
  }
}