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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin: 0;
  padding: 20px;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  overflow-x: hidden;
}

.background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.shapes {
  position: relative;
  width: 100%;
  height: 100%;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.shape1 {
  width: 200px;
  height: 200px;
  background: white;
  top: 10%;
  left: -50px;
  animation-delay: 0s;
}

.shape2 {
  width: 300px;
  height: 300px;
  background: white;
  top: 60%;
  right: -100px;
  animation-delay: 2s;
}

.shape3 {
  width: 150px;
  height: 150px;
  background: white;
  top: 40%;
  left: 50%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(10deg); }
}

.container {
  max-width: 420px;
  margin: 0 auto;
  padding: 40px 0 0 0;
  text-align: center;
  position: relative;
  z-index: 1;
}

.header {
  margin-bottom: 40px;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 12px;
}

.logo-icon {
  font-size: 2.5rem;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: white;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
  margin: 0;
}

.tagline {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 300;
  margin-top: 8px;
}

.action-cards {
  display: grid;
  gap: 20px;
  margin-bottom: 40px;
  justify-content: center;
  grid-template-columns: 1fr;
}

.card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 30px 24px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.action-cards {
  width: 100%;
  max-width: 600px;
  box-sizing: border-box;
}

.card {
  min-width: 0;
  width: 100%;
  flex: 1 1 0;
  box-sizing: border-box;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
  background: rgba(255, 255, 255, 1);
}

.card:active {
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
}

.card h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 8px;
}

.card p {
  font-size: 1rem;
  color: #718096;
  font-weight: 400;
  line-height: 1.5;
}

.features {
  display: grid;
  gap: 16px;
  margin-top: 32px;
  justify-content: center;
  grid-template-columns: 1fr;
}

.feature {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 16px 20px;
  border-radius: 12px;
  color: white;
  font-weight: 400;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  justify-content: center;
}

.feature span:first-child {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  color: white;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top: 3px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 20px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-overlay p {
  font-size: 1.1rem;
  font-weight: 400;
}

/* Tablet and Desktop */
@media (min-width: 768px) {
  .action-cards {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    justify-content: center;
  }
  .features {
    grid-template-columns: repeat(3, 1fr);
    justify-content: center;
  }
  .feature {
    justify-content: center;
    text-align: center;
  }
  h1 {
    font-size: 3rem;
  }
  .tagline {
    font-size: 1.2rem;
  }
}