/* Display */
.show { display: block; }
.hidden { display: none; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.inline-grid { display: inline-grid; }
.table { display: table; }
.table-row { display: table-row; }
.table-cell { display: table-cell; }

/* Visibility */
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.static { position: static; }

/* Positioning helpers */
.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }
.top-50 { top: 50%; }
.left-50 { left: 50%; }

/* Flex Direction */
.flex-row { flex-direction: row; }
.flex-row-reverse { flex-direction: row-reverse; }
.flex-col { flex-direction: column; }
.flex-col-reverse { flex-direction: column-reverse; }

/* Justify Content */
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.justify-evenly { justify-content: space-evenly; }

/* Align Items */
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }
.items-baseline { align-items: baseline; }

/* Align Self */
.self-auto { align-self: auto; }
.self-start { align-self: flex-start; }
.self-center { align-self: center; }
.self-end { align-self: flex-end; }
.self-stretch { align-self: stretch; }
.self-baseline { align-self: baseline; }

/* Flex Wrap */
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-wrap-reverse { flex-wrap: wrap-reverse; }

/* Flex Grow & Shrink */
.flex-1 { flex: 1; }
.flex-auto { flex: auto; }
.flex-none { flex: none; }
.grow { flex-grow: 1; }
.shrink { flex-shrink: 1; }

/* Grid Template Columns */
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Grid Gap */
.gap-0 { gap: 0; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }

/* Grid Auto Flow */
.grid-flow-row { grid-auto-flow: row; }
.grid-flow-col { grid-auto-flow: column; }
.grid-flow-dense { grid-auto-flow: dense; }

/* Margin */
.m-0 { margin: 0; }
.m-1 { margin: 0.25rem; }
.m-2 { margin: 0.5rem; }
.m-3 { margin: 0.75rem; }
.m-4 { margin: 1rem; }
.m-auto { margin: auto; }

/* Margin Top, Right, Bottom, Left */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mr-1 { margin-right: 0.25rem; }
.mb-1 { margin-bottom: 0.25rem; }
.ml-1 { margin-left: 0.25rem; }

/* Padding */
.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }

/* Padding Top, Right, Bottom, Left */
.pt-1 { padding-top: 0.25rem; }
.pr-1 { padding-right: 0.25rem; }
.pb-1 { padding-bottom: 0.25rem; }
.pl-1 { padding-left: 0.25rem; }

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

/* Font Weight */
.font-normal { font-weight: normal; }
.font-bold { font-weight: bold; }
.font-light { font-weight: 300; }

/* Font Style */
.italic { font-style: italic; }
.not-italic { font-style: normal; }

/* Text Decoration */
.underline { text-decoration: underline; }
.line-through { text-decoration: line-through; }
.no-underline { text-decoration: none; }

/* Text Transform */
.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

/* Font Size */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }

/* Text Colors */
.text-black { color: #000; }
.text-white { color: #fff; }
.text-gray { color: #666; }
.text-red { color: #ff0000; }
.text-blue { color: #0000ff; }
.text-green { color: #00ff00; }
.text-purple { color: #9b59b6; }

/* Background Colors */
.bg-black { background-color: #000; }
.bg-white { background-color: #fff; }
.bg-gray { background-color: #666; }
.bg-red { background-color: #ff0000; }
.bg-blue { background-color: #0000ff; }
.bg-green { background-color: #00ff00; }

/* Transparency */
.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

/* Width */
.w-full { width: 100%; }
.w-50 { width: 50%; }
.w-33 { width: 33.33%; }
.w-25 { width: 25%; }
.w-auto { width: auto; }

/* Height */
.h-full { height: 100%; }
.h-screen { height: 100vh; }
.h-auto { height: auto; }

/* Min/Max Width & Height */
.min-w-full { min-width: 100%; }
.max-w-full { max-width: 100%; }
.min-h-screen { min-height: 100vh; }

/* Border Width */
.border-0 { border-width: 0; }
.border-1 { border-width: 1px; }
.border-2 { border-width: 2px; }

/* Border Color */
.border-black { border-color: #000; }
.border-white { border-color: #fff; }
.border-gray { border-color: #666; }

/* Border Radius */
.rounded-none { border-radius: 0; }
.rounded-sm { border-radius: 0.125rem; }
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-full { border-radius: 9999px; }

/* Border Style */
.border-solid { border-style: solid; }
.border-dashed { border-style: dashed; }
.border-dotted { border-style: dotted; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }

/* Z-Index */
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-50 { z-index: 50; }

/* Box Shadow */
.shadow-none { box-shadow: none; }
.shadow-sm { box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05); }
.shadow { box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1); }
.shadow-lg { box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1); }

/* Transition */
.transition { transition: all 0.2s ease; }
.transition-slow { transition: all 0.5s ease; }