/* Transition Utilities */
.transition-fast { 
    transition: all 0.1s ease; 
}

.transition-base { 
    transition: all 0.2s ease; 
}

.transition-slow { 
    transition: all 0.3s ease; 
}

/* Z-Index Utilities */
.z-base { 
    z-index: var(--z-base); 
}

.z-elevated { 
    z-index: var(--z-elevated); 
}

.z-above { 
    z-index: var(--z-above); 
}

.z-dropdown { 
    z-index: var(--z-dropdown); 
}

.z-modal { 
    z-index: var(--z-modal); 
}

.z-tooltip { 
    z-index: var(--z-tooltip); 
}

.z-floating { 
    z-index: var(--z-floating); 
}

.z-floating-high { 
    z-index: var(--z-floating-high); 
}