:root {
  --bg-color: #0B0F19;
  --text-color: #f8fafc;
  --text-muted: #94a3b8;
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-border: rgba(255, 255, 255, 0.08);
  --hover-border: rgba(56, 189, 248, 0.4);
  --accent-color: #38bdf8;
  --gradient-start: #3b82f6;
  --gradient-end: #8b5cf6;
  --card-radius: 16px;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

/* Dynamic Animated Background */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle at 30% 30%, rgba(59, 130, 246, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 70% 70%, rgba(139, 92, 246, 0.08) 0%, transparent 40%);
  z-index: -1;
  pointer-events: none;
  animation: bg-pulse 15s ease-in-out infinite alternate;
}

@keyframes bg-pulse {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.1); opacity: 1; }
}

header {
  padding: 4rem 1rem 3rem;
  text-align: center;
}

.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.logo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--card-border);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.logo:hover {
  transform: scale(1.05) rotate(5deg);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.4);
}

h1 {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-color), var(--text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.15rem;
  font-weight: 400;
}

main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
  width: 100%;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: 1.75rem;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  text-decoration: none;
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--hover-border);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 0 20px rgba(56, 189, 248, 0.1) inset;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
  transition: left 0.5s ease;
}

.card:hover::before {
  left: 100%;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 1rem;
}

.card-icon {
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform 0.3s ease, background 0.3s ease;
  overflow: hidden;
}

.card-icon img {
  width: 24px;
  height: 24px;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.card:hover .card-icon {
  transform: scale(1.1);
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.2);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  transition: color 0.3s ease;
}

.card:hover .card-title {
  color: var(--accent-color);
}

.card-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  flex-grow: 1;
}

.tag {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: 1.25rem;
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-color);
  align-self: flex-start;
  border: 1px solid rgba(56, 189, 248, 0.2);
  transition: all 0.3s ease;
}

.card:hover .tag {
  background: rgba(56, 189, 248, 0.2);
  border-color: rgba(56, 189, 248, 0.4);
}

footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--card-border);
  background: rgba(11, 15, 25, 0.5);
  backdrop-filter: blur(10px);
}

@media (max-width: 640px) {
  h1 {
    font-size: 2.25rem;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  header {
    padding: 3rem 1rem 2rem;
  }
}