/**
 * Frontend Styles for Divi Scroll Story - Optimized
 */

/* Container and Layout */
.dss-scroll-story-container {
    position: relative;
    width: 100%;
    overflow: visible;
    min-height: 300vh;
    visibility: hidden;
}

.dss-scroll-story-container.dss-loaded {
    visibility: visible;
}

/* Sticky Mode */
.dss-scroll-story-container.dss-sticky-mode {
    height: auto;
}

.dss-stage {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background: transparent;
}

.dss-sticky-mode .dss-stage {
    position: sticky;
    top: 0;
    /* GPU acceleration */
    will-change: transform;
    transform: translateZ(0);
}

/* Image Sequence Layer */
.dss-image-sequence {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    background-color: #000;
    /* GPU acceleration */
    transform: translateZ(0);
}

.dss-frame {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    display: block;
    /* GPU acceleration - CRITICAL for performance */
    will-change: opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.dss-frame.dss-active-frame {
    opacity: 1;
    z-index: 2;
}

/* Scenes Layer */
.dss-scenes-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    /* GPU acceleration */
    transform: translateZ(0);
}

.dss-scene {
    position: relative;
    margin: 0 auto;
    padding: 40px 20px;
    width: 80%;
    max-width: 1080px;
    opacity: 0;
    pointer-events: auto;
    text-align: center;
    min-height: 200px;
    /* GPU acceleration */
    will-change: opacity, transform;
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.dss-scene.dss-active-scene {
    opacity: 1;
}

/* Positioning Classes */
.dss-scene.dss-align-left {
    margin-left: 0;
    margin-right: auto;
    text-align: left;
}

.dss-scene.dss-align-right {
    margin-left: auto;
    margin-right: 0;
    text-align: right;
}

.dss-scene.dss-align-center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

/* Vertical Alignment */
.dss-scenes-layer.dss-valign-top {
    justify-content: flex-start;
    padding-top: 80px;
}

.dss-scenes-layer.dss-valign-bottom {
    justify-content: flex-end;
    padding-bottom: 80px;
}

.dss-scenes-layer.dss-valign-center {
    justify-content: center;
}

/* Animation Classes - Applied via JS transition-duration */
.dss-scene {
    transition-property: opacity, transform;
    transition-timing-function: ease-out;
}

/* Fade (default) */
.dss-scene.dss-anim-fade {
    transform: translateZ(0);
}

/* Slide Animations */
.dss-scene.dss-anim-slide_left:not(.dss-active-scene) {
    transform: translate3d(-100px, 0, 0);
}

.dss-scene.dss-anim-slide_right:not(.dss-active-scene) {
    transform: translate3d(100px, 0, 0);
}

.dss-scene.dss-anim-slide_up:not(.dss-active-scene) {
    transform: translate3d(0, 100px, 0);
}

.dss-scene.dss-anim-slide_down:not(.dss-active-scene) {
    transform: translate3d(0, -100px, 0);
}

/* Scale Animations */
.dss-scene.dss-anim-scale_up:not(.dss-active-scene) {
    transform: scale3d(0.8, 0.8, 1);
}

.dss-scene.dss-anim-scale_down:not(.dss-active-scene) {
    transform: scale3d(1.2, 1.2, 1);
}

.dss-scene.dss-active-scene {
    transform: translate3d(0, 0, 0) scale3d(1, 1, 1);
}

/* Typography Defaults */
.dss-scene-heading {
    margin-bottom: 20px;
    font-weight: 700;
}

.dss-scene-body {
    margin-bottom: 30px;
    line-height: 1.6;
}

.dss-scene-button {
    display: inline-block;
    transition: transform 0.2s;
}

.dss-scene-button:hover {
    transform: scale(1.05);
}

/* Responsive */
@media (max-width: 768px) {
    .dss-scene {
        width: 90%;
        padding: 20px;
    }

    .dss-scenes-layer.dss-valign-top {
        padding-top: 40px;
    }

    .dss-scenes-layer.dss-valign-bottom {
        padding-bottom: 40px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {

    .dss-scene,
    .dss-frame {
        transition: none !important;
        animation: none !important;
    }

    .dss-scene.dss-anim-slide_left:not(.dss-active-scene),
    .dss-scene.dss-anim-slide_right:not(.dss-active-scene),
    .dss-scene.dss-anim-slide_up:not(.dss-active-scene),
    .dss-scene.dss-anim-slide_down:not(.dss-active-scene),
    .dss-scene.dss-anim-scale_up:not(.dss-active-scene),
    .dss-scene.dss-anim-scale_down:not(.dss-active-scene) {
        transform: none;
    }
}