:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --bg-color: #f9fafb;
  --text-color: #1f2937;
  --card-bg: #ffffff;
  --border-color: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #111827;
    --text-color: #f3f4f6;
    --card-bg: #1f2937;
    --border-color: #374151;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.18);
  }
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  padding: 2rem 1rem;
  text-align: center;
}

.logo {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), #818cf8);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.8;
  max-width: 600px;
  margin: 0 auto;
}

main {
  flex: 1;
  padding: 2rem 1rem;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

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

.app-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: var(--text-color);
  box-shadow: var(--shadow);
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  border-color: var(--primary-color);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: rgba(99, 102, 241, 0.1);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.95rem;
  opacity: 0.7;
  margin-bottom: 1.5rem;
  flex: 1;
}

.card-link {
  font-weight: 600;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-link::after {
  content: '→';
  transition: transform 0.2s;
}

.app-card:hover .card-link::after {
  transform: translateX(4px);
}

footer {
  text-align: center;
  padding: 2rem;
  opacity: 0.6;
  font-size: 0.9rem;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}