body { margin: 0; font-family: sans-serif; }
.bg-white { background-color: white; }
.text-gray-800 { color: #1f2937; }
.bg-gray-900 { background-color: #111827; }
.text-white { color: white; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.text-center { text-align: center; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.font-bold { font-weight: 700; }
.shadow-md { box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); }
.shadow:hover { box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15); }
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.gap-6 { gap: 1.5rem; }
.card { border: 1px solid #e5e7eb; padding: 1rem; border-radius: 0.5rem; background-color: white; }
.btn { background-color: #ef4444; color: white; padding: 0.75rem 1.5rem; border: none; border-radius: 0.375rem; cursor: pointer; }
.btn:hover { background-color: #dc2626; }