@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --dark-bg: #0f0f23;
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-border: rgba(255, 255, 255, 0.1);
  --text-primary: #ffffff;
  --text-secondary: #a0a0c0;
  --shadow-glow: 0 8px 32px rgba(102, 126, 234, 0.3);
  --shadow-card: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--dark-bg);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Animated Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 30%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(118, 75, 162, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(75, 108, 254, 0.1) 0%, transparent 50%);
  animation: backgroundPulse 15s ease-in-out infinite;
  z-index: -1;
}

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

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

/* Header */
header {
  text-align: center;
  padding: 4rem 2rem 2rem;
  position: relative;
}

.logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--primary-gradient);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  box-shadow: var(--shadow-glow);
  animation: float 3s ease-in-out infinite;
}

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

h1 {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  animation: gradientShift 5s ease infinite;
  background-size: 200% 200%;
}

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

.subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 3rem;
}

/* Main Content */
main {
  padding: 2rem 0;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
  border-color: rgba(102, 126, 234, 0.5);
}

.card:hover::before {
  opacity: 0.1;
}

.card-icon {
  width: 60px;
  height: 60px;
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  transition: transform 0.3s ease;
}

.card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
}

.ios-card .card-icon {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.android-card .card-icon {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

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

.app-id {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.75rem 1rem;
  border-radius: 10px;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  margin-top: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  word-break: break-all;
}

/* Test Links Section */
.test-links {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2.5rem;
  margin-bottom: 3rem;
}

.test-links h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
}

.links-container {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.test-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.test-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--success-gradient);
  opacity: 0.1;
  transition: left 0.3s ease;
}

.test-link:hover::before {
  left: 0;
}

.test-link:hover {
  transform: translateX(5px);
  border-color: rgba(79, 172, 254, 0.5);
  box-shadow: 0 4px 20px rgba(79, 172, 254, 0.2);
}

.link-text {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.link-icon {
  font-size: 1.5rem;
}

.link-label {
  font-weight: 500;
}

.link-arrow {
  font-size: 1.25rem;
  transition: transform 0.3s ease;
}

.test-link:hover .link-arrow {
  transform: translateX(5px);
}

/* Instructions */
.instructions {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2.5rem;
}

.instructions h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
}

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

.instruction-block h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.instruction-block ol {
  padding-left: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.instruction-block li {
  margin-bottom: 0.75rem;
}

.instruction-block code {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.85rem;
  color: #4facfe;
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

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

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

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  .subtitle {
    font-size: 1rem;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .platform-instructions {
    grid-template-columns: 1fr;
  }
  
  .test-link {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}