// Name:            Sticky
// Description:     Make elements remain at the top of the viewport
//
// Component:       `data-uk-sticky`
//
// States:          `uk-active`
//
// ========================================================================


// Variables
// ========================================================================

@sticky-z-index:                                980;

@sticky-animation-duration:                     0.2s;
@sticky-reverse-animation-duration:             0.2s;


/* ========================================================================
   Component: Sticky
 ========================================================================== */

/*
 * 1. More robust if padding and border are used
 */

[data-uk-sticky].uk-active {
   z-index: @sticky-z-index;
   /* 1 */
   box-sizing: border-box;
}

/*
 * 1. Resolve frame-rate issues on devices with lower frame-rates. Forces hardware acceleration
 */

.uk-sticky-placeholder > * {
    /* 1 */
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

/*
 * Faster animations
 */

[data-uk-sticky][class*='uk-animation-'] {
    -webkit-animation-duration: @sticky-animation-duration;
    animation-duration: @sticky-animation-duration;
}

[data-uk-sticky].uk-animation-reverse {
    -webkit-animation-duration: @sticky-reverse-animation-duration;
    animation-duration: @sticky-reverse-animation-duration;
}


// Hooks
// ========================================================================

.hook-sticky-misc;

.hook-sticky-misc() {}