:root {
    /* Z-index variables */
    --klx-z-index-container: 999998;
    --klx-z-index-elements: 999999;
    
    /* Spacing variables */
    --klx-spacing-sm: .25rem;
    --klx-spacing-md: .5rem;
    
    /* Animation variables */
    --klx-transition-duration: 0.4s;
    --klx-transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
    --klx-transition-duration-hover: 0.2s;
    
    /* Colors */
    --klx-overlay-color: rgba(0, 0, 0, 0.5);
    --klx-popup-bg: #fff;
    --klx-close-button-color: #666;
    --klx-close-button-hover: #333;
    
    /* Shadows */
    --klx-shadow-default: 0 4px 6px rgba(0, 0, 0, 0.1);
    
    /* Sizes */
    --klx-popup-max-size: 90%;
    --klx-popup-min-width: 300px;
    --klx-close-button-size: 30px;
    --klx-button-padding: .5rem;
    --klx-button-mobile-padding: 0;
}

/* Container */
#klx-popup-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--klx-z-index-container);
    pointer-events: none;
}

#klx-popup-container .klx-popup,
#klx-popup-container .klx-floating-button {
    pointer-events: auto;
}

/* Popup Base Styles */
.klx-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--klx-z-index-elements);
    display: none;
    opacity: 0;
    transition: opacity var(--klx-transition-duration) var(--klx-transition-timing);
    will-change: opacity;
}

.klx-popup.active {
    opacity: 1;
}

/* Popup Overlay */
.klx-popup-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--klx-overlay-color);
    opacity: 0;
    transition: opacity var(--klx-transition-duration) var(--klx-transition-timing);
    will-change: opacity;
}

.klx-popup.active .klx-popup-overlay {
    opacity: 1;
}

/* Popup Content Base */
.klx-popup-content {
    position: absolute;
    background-color: var(--klx-popup-bg);
    border-radius: 8px;
    box-shadow: var(--klx-shadow-default);
    max-width: var(--klx-popup-max-size);
    max-height: var(--klx-popup-max-size);
    overflow: auto;
    opacity: 0;
    transform: scale(0.95) translateY(20px);
    transition: all var(--klx-transition-duration) var(--klx-transition-timing);
    will-change: transform, opacity;
}

.klx-popup.active .klx-popup-content {
    opacity: 1;
    transform: scale(1) translateY(0);
}

/* Popup Content Positions */
.klx-popup-content {
    &.top-left {
        top: var(--klx-spacing-md);
        left: var(--klx-spacing-md);
        transform-origin: top left;
    }

    &.top-center {
        top: var(--klx-spacing-md);
        left: 50%;
        transform: translateX(-50%) scale(0.95) translateY(20px);
        transform-origin: top center;
    }

    &.top-right {
        top: var(--klx-spacing-md);
        right: var(--klx-spacing-md);
        transform-origin: top right;
    }

    &.middle-left {
        top: 50%;
        left: var(--klx-spacing-md);
        transform: translateY(-50%) scale(0.95) translateX(-20px);
        transform-origin: center left;
    }

    &.middle-center {
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0.95) translateY(20px);
        transform-origin: center;
    }

    &.middle-right {
        top: 50%;
        right: var(--klx-spacing-md);
        transform: translateY(-50%) scale(0.95) translateX(20px);
        transform-origin: center right;
    }

    &.bottom-left {
        bottom: var(--klx-spacing-md);
        left: var(--klx-spacing-md);
        transform-origin: bottom left;
    }

    &.bottom-center {
        bottom: var(--klx-spacing-md);
        left: 50%;
        transform: translateX(-50%) scale(0.95) translateY(-20px);
        transform-origin: bottom center;
    }

    &.bottom-right {
        bottom: var(--klx-spacing-md);
        right: var(--klx-spacing-md);
        transform-origin: bottom right;
    }
}

/* Active States for Positioned Content */
.klx-popup.active .klx-popup-content {
    &.top-center {
        transform: translateX(-50%) scale(1) translateY(0);
    }

    &.middle-left {
        transform: translateY(-50%) scale(1) translateX(0);
    }

    &.middle-center {
        transform: translate(-50%, -50%) scale(1) translateY(0);
    }

    &.middle-right {
        transform: translateY(-50%) scale(1) translateX(0);
    }

    &.bottom-center {
        transform: translateX(-50%) scale(1) translateY(0);
    }
}

/* Popup Close Button */
.klx-popup-close {
    position: absolute;
    top: var(--klx-spacing-sm);
    right: var(--klx-spacing-sm);
    width: var(--klx-close-button-size);
    height: var(--klx-close-button-size);
    border: none;
    background: none;
    font-size: 24px;
    line-height: 1;
    color: var(--klx-close-button-color);
    cursor: pointer;
    z-index: 1;
    transition: color var(--klx-transition-duration-hover);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;

    &:hover {
        color: var(--klx-close-button-hover);
    }
}

/* Popup Inner Content */
.klx-popup-inner {
    min-width: var(--klx-popup-min-width);
}

/* Floating Button Base Styles */
.klx-floating-button {
    position: fixed;
    z-index: var(--klx-z-index-elements);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    padding: var(--klx-button-padding);
    border-radius: 4px;
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--klx-transition-duration) var(--klx-transition-timing);
    box-shadow: var(--klx-shadow-default);
    cursor: pointer;
    white-space: nowrap;
    max-width: var(--klx-popup-max-size);
    will-change: transform;

    &.active {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
}

/* Button Positions */
.klx-floating-button {
    &.top-left {
        top: var(--klx-spacing-md);
        left: var(--klx-spacing-md);
    }

    &.top-center {
        top: var(--klx-spacing-md);
        left: 50%;
        transform: translateX(-50%) scale(0.8);

        &.active {
            transform: translateX(-50%) scale(1);
        }
    }

    &.top-right {
        top: var(--klx-spacing-md);
        right: var(--klx-spacing-md);
    }

    &.middle-left {
        top: 50%;
        left: var(--klx-spacing-md);
        transform: translateY(-50%) scale(0.8);

        &.active {
            transform: translateY(-50%) scale(1);
        }
    }

    &.middle-right {
        top: 50%;
        right: var(--klx-spacing-md);
        transform: translateY(-50%) scale(0.8);

        &.active {
            transform: translateY(-50%) scale(1);
        }
    }

    &.bottom-left {
        bottom: var(--klx-spacing-md);
        left: var(--klx-spacing-md);
    }

    &.bottom-center {
        bottom: var(--klx-spacing-md);
        left: 50%;
        transform: translateX(-50%) scale(0.8);

        &.active {
            transform: translateX(-50%) scale(1);
        }
    }

    &.bottom-right {
        bottom: var(--klx-spacing-md);
        right: var(--klx-spacing-md);
    }
}

/* Responsive Adjustments */
@media screen and (max-width: 768px) {
    .klx-popup-content {
        width: 95%;
        max-width: none;
        margin: var(--klx-spacing-sm);
    }
    
    .klx-floating-button {
        padding: var(--klx-button-mobile-padding);
        font-size: 14px;
    }
}