.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.text-primary { color: #2563eb; }
.text-secondary { color: #64748b; }
.text-dark { color: #1e293b; }
.text-white { color: white; }
.w-full { width: 100%; }
.w-auto { width: auto; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-50 { z-index: 50; }
.overflow-hidden { overflow: hidden; }
.cursor-pointer { cursor: pointer; }