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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #121212 0%, #1e1e1e 100%);
  color: #ffffff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.container {
  text-align: center;
  padding: 2rem;
  max-width: 500px;
  width: 90%;
}

.logo {
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, #e91e63, #f06292);
  border-radius: 50%;
  margin: 0 auto 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: bold;
  box-shadow: 0 20px 40px rgba(233, 30, 99, 0.3);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff, #e91e63);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 1.1rem;
  color: #b3b3b3;
  margin-bottom: 2rem;
  line-height: 1.5;
}

.install-prompt {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(233, 30, 99, 0.3);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
}

.install-button {
  background: linear-gradient(135deg, #e91e63, #f06292);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(233, 30, 99, 0.4);
  margin: 0.5rem;
}

.install-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(233, 30, 99, 0.6);
}

.install-button:active {
  transform: translateY(0);
}

.success-message {
  display: none;
  background: linear-gradient(135deg, #4caf50, #66bb6a);
  color: white;
  padding: 1.5rem;
  border-radius: 12px;
  font-size: 1.2rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(76, 175, 80, 0.4);
  animation: slideIn 0.5s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.feature {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 1rem;
  border: 1px solid rgba(233, 30, 99, 0.2);
  transition: all 0.3s ease;
}

.feature:hover {
  border-color: rgba(233, 30, 99, 0.5);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.hidden {
  display: none !important;
}

@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .logo {
    width: 100px;
    height: 100px;
    font-size: 2.5rem;
  }
}