/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */

/* Grid Systems */
.grid-auto-fit {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-lg); }

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

/* Flexbox Utilities */
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-1 { flex: 1; }
.flex-shrink-0 { flex-shrink: 0; }
.flex-grow-1 { flex-grow: 1; }

/* Spacing */
.space-y-1 > * + * { margin-top: var(--spacing-xs); }
.space-y-2 > * + * { margin-top: var(--spacing-sm); }
.space-y-3 > * + * { margin-top: var(--spacing-md); }
.space-y-4 > * + * { margin-top: var(--spacing-lg); }
.space-y-5 > * + * { margin-top: var(--spacing-xl); }

.space-x-1 > * + * { margin-left: var(--spacing-xs); }
.space-x-2 > * + * { margin-left: var(--spacing-sm); }
.space-x-3 > * + * { margin-left: var(--spacing-md); }
.space-x-4 > * + * { margin-left: var(--spacing-lg); }
.space-x-5 > * + * { margin-left: var(--spacing-xl); }

/* Width and Height */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-fit { width: fit-content; }
.h-full { height: 100%; }
.h-auto { height: auto; }
.h-fit { height: fit-content; }
.min-h-screen { min-height: 100vh; }

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

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

/* Visibility */
.visible { visibility: visible; }
.invisible { visibility: hidden; }
.hidden { display: none !important; }
.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* Colors */
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }
.text-info { color: var(--info-color); }
.text-light { color: var(--light-color); }
.text-dark { color: var(--dark-color); }
.text-muted { color: var(--gray-600); }

.bg-primary { background-color: var(--primary-color); }
.bg-secondary { background-color: var(--secondary-color); }
.bg-success { background-color: var(--success-color); }
.bg-danger { background-color: var(--danger-color); }
.bg-warning { background-color: var(--warning-color); }
.bg-info { background-color: var(--info-color); }
.bg-light { background-color: var(--light-color); }
.bg-dark { background-color: var(--dark-color); }
.bg-white { background-color: var(--white); }
.bg-transparent { background-color: transparent; }

/* Border */
.border { border: 1px solid var(--gray-300); }
.border-0 { border: none; }
.border-top { border-top: 1px solid var(--gray-300); }
.border-bottom { border-bottom: 1px solid var(--gray-300); }
.border-left { border-left: 1px solid var(--gray-300); }
.border-right { border-right: 1px solid var(--gray-300); }

.rounded { border-radius: var(--border-radius-sm); }
.rounded-md { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-full { border-radius: 50%; }
.rounded-none { border-radius: 0; }

/* Shadow */
.shadow-none { box-shadow: none; }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }
.cursor-not-allowed { cursor: not-allowed; }

/* User Select */
.select-none { user-select: none; }
.select-all { user-select: all; }
.select-auto { user-select: auto; }

/* Transform */
.transform { transform: translateZ(0); }
.scale-105 { transform: scale(1.05); }
.scale-110 { transform: scale(1.1); }
.translate-y-1 { transform: translateY(-4px); }
.translate-y-2 { transform: translateY(-8px); }

/* Transition */
.transition { transition: all var(--transition-fast); }
.transition-colors { transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast); }
.transition-transform { transition: transform var(--transition-fast); }
.transition-opacity { transition: opacity var(--transition-fast); }

/* Font */
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-xs { font-size: 0.75em; }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }
.normal-case { text-transform: none; }

.italic { font-style: italic; }
.not-italic { font-style: normal; }

/* Line Height */
.leading-none { line-height: 1; }
.leading-tight { line-height: 1.25; }
.leading-normal { line-height: 1.5; }
.leading-relaxed { line-height: 1.75; }