/**
 * DeukSpine Scroll Animations - Apple-style Text Reveal
 *
 * Desktop: Two-column layout (animation + text side-by-side)
 * Mobile: Stacked layout (animation on top, text below)
 */

/* ==========================================================================
   DESKTOP: SIDE-BY-SIDE LAYOUT
   ========================================================================== */

/* Override sticky wrapper for side-by-side on desktop */
.dsa-section-apple-reveal .dsa-sticky-wrapper {
    flex-direction: row;
    align-items: stretch;
    gap: 3rem;
}

/* Animation Container - takes up space needed */
.dsa-section-apple-reveal .dsa-animation-container {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dsa-section-apple-reveal .dsa-animation-canvas {
    max-width: 100%;
    max-height: 90vh;
    width: auto;
    height: auto;
    object-fit: contain;
}

/* ==========================================================================
   TEXT REVEAL AREA - Side panel on desktop
   ========================================================================== */

.dsa-text-reveal-area {
    position: relative;
    width: 350px;
    flex-shrink: 0;
    padding: 2rem;
    background: var(--dsa-text-bg, #ffffff);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 200px;
    max-height: 90vh;
}

/* Hide scrollbar but keep functionality */
.dsa-text-reveal-area {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.dsa-text-reveal-area::-webkit-scrollbar {
    display: none;
}

/* ==========================================================================
   LEFT/RIGHT POSITION VARIANTS
   ========================================================================== */

/* Text on left (animation on right) */
.dsa-layout-left .dsa-sticky-wrapper {
    flex-direction: row-reverse;
}

/* Text on right (animation on left) - default */
.dsa-layout-right .dsa-sticky-wrapper {
    flex-direction: row;
}

/* ==========================================================================
   TEXT BLOCKS - Only active one visible
   ========================================================================== */

.dsa-text-block {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.4s ease, transform 0.4s ease, visibility 0s 0.4s;
}

.dsa-text-block.dsa-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 0.4s ease, transform 0.4s ease, visibility 0s 0s;
}

/* ==========================================================================
   TEXT ANIMATION EFFECTS (Desktop Only)
   ========================================================================== */

/* Fade (default) - just opacity */
.dsa-effect-fade .dsa-text-block {
    transform: none;
}

/* Slide from Left */
.dsa-effect-slide-left .dsa-text-block {
    transform: translate(-40px, -50%);
}

.dsa-effect-slide-left .dsa-text-block.dsa-active {
    transform: translate(0, -50%);
}

.dsa-effect-slide-left .dsa-text-block.dsa-exiting {
    transform: translate(40px, -50%);
}

/* Slide from Right */
.dsa-effect-slide-right .dsa-text-block {
    transform: translate(40px, -50%);
}

.dsa-effect-slide-right .dsa-text-block.dsa-active {
    transform: translate(0, -50%);
}

.dsa-effect-slide-right .dsa-text-block.dsa-exiting {
    transform: translate(-40px, -50%);
}

/* Slide from Below (slide up) */
.dsa-effect-slide-up .dsa-text-block {
    transform: translate(0, calc(-50% + 40px));
}

.dsa-effect-slide-up .dsa-text-block.dsa-active {
    transform: translate(0, -50%);
}

.dsa-effect-slide-up .dsa-text-block.dsa-exiting {
    transform: translate(0, calc(-50% - 40px));
}

/* Slide from Above (slide down) */
.dsa-effect-slide-down .dsa-text-block {
    transform: translate(0, calc(-50% - 40px));
}

.dsa-effect-slide-down .dsa-text-block.dsa-active {
    transform: translate(0, -50%);
}

.dsa-effect-slide-down .dsa-text-block.dsa-exiting {
    transform: translate(0, calc(-50% + 40px));
}

/* Zoom In */
.dsa-effect-zoom .dsa-text-block {
    transform: translateY(-50%) scale(0.85);
}

.dsa-effect-zoom .dsa-text-block.dsa-active {
    transform: translateY(-50%) scale(1);
}

.dsa-effect-zoom .dsa-text-block.dsa-exiting {
    transform: translateY(-50%) scale(1.1);
}

/* Flip (3D) */
.dsa-effect-flip .dsa-text-reveal-area {
    perspective: 1000px;
}

.dsa-effect-flip .dsa-text-block {
    transform: translateY(-50%) rotateX(-90deg);
    transform-origin: center center;
    backface-visibility: hidden;
}

.dsa-effect-flip .dsa-text-block.dsa-active {
    transform: translateY(-50%) rotateX(0);
}

.dsa-effect-flip .dsa-text-block.dsa-exiting {
    transform: translateY(-50%) rotateX(90deg);
}

/* ==========================================================================
   PLACEHOLDER TEXT
   ========================================================================== */

.dsa-text-placeholder {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0s 0.4s;
}

.dsa-text-placeholder.active {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.4s ease, visibility 0s 0s;
}

.dsa-placeholder-image {
    margin-bottom: 16px;
    text-align: center;
}

.dsa-placeholder-image img {
    max-width: 100%;
    max-height: 120px;
    width: auto;
    height: auto;
    border-radius: 8px;
    opacity: 0.7;
}

.dsa-placeholder-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #888;
    margin: 0 0 12px;
}

.dsa-placeholder-subtitle {
    font-size: 1rem;
    color: #aaa;
    margin: 0;
    line-height: 1.6;
}

/* ==========================================================================
   TEXT CONTENT STYLES
   ========================================================================== */

/* Stage Badge */
.dsa-stage-badge {
    display: inline-block;
    padding: 6px 14px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #2271b1;
    background: rgba(34, 113, 177, 0.1);
    border-radius: 20px;
    margin: 0 0 16px 0;
}

/* Label Title */
.dsa-label-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 12px 0;
    line-height: 1.2;
}

/* Label Subtitle */
.dsa-label-subtitle {
    font-size: 1.1rem;
    color: #4a4a5a;
    margin: 0 0 16px 0;
    line-height: 1.5;
    font-weight: 500;
}

/* Label Detail (Full Description) */
.dsa-label-detail {
    font-size: 1rem;
    color: #666;
    line-height: 1.7;
    margin: 0;
}

.dsa-label-detail p {
    margin: 0 0 12px 0;
}

.dsa-label-detail p:last-child {
    margin-bottom: 0;
}

.dsa-label-detail p:empty {
    display: none; /* Hide empty paragraphs that might be auto-inserted */
}

/* Ensure stage badge is not wrapped in <p> */
.dsa-text-block > p:first-child {
    display: contents; /* Remove any auto-inserted <p> wrapper */
}

/* Details Link */
.dsa-details-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    color: #fff !important;
    background: #2271b1;
    border-radius: 8px;
    text-decoration: none;
    transition: background 0.2s ease, transform 0.2s ease;
}

.dsa-details-link svg {
    fill: currentColor;
}

.dsa-details-link:hover {
    background: #135e96;
    transform: translateY(-2px);
    color: #fff !important;
}

/* ==========================================================================
   NO TEXT MODE
   ========================================================================== */

.dsa-layout-none .dsa-text-reveal-area {
    display: none;
}

.dsa-layout-none .dsa-animation-container {
    width: 100%;
}

/* ==========================================================================
   MOBILE STAGE INDICATORS (Hidden on Desktop)
   ========================================================================== */

/* Hide mobile stage indicators on desktop - only show on mobile */
.dsa-mobile-stage-indicators,
.dsa-mobile-modal {
    display: none;
}

/* ==========================================================================
   MOBILE: STACKED LAYOUT
   ========================================================================== */

@media (max-width: 768px) {
    /* ==========================================================================
       MOBILE STACKED LAYOUT (default)
       ========================================================================== */

    /* Switch to stacked layout on mobile by default */
    .dsa-section-apple-reveal .dsa-sticky-wrapper,
    .dsa-mobile-layout-stacked .dsa-sticky-wrapper {
        flex-direction: column;
        padding: 0;
        gap: 0;
    }

    /* Override left/right variants on mobile - stacked */
    .dsa-mobile-layout-stacked.dsa-layout-left .dsa-sticky-wrapper,
    .dsa-mobile-layout-stacked.dsa-layout-right .dsa-sticky-wrapper {
        flex-direction: column;
    }

    /* Animation container - full width in stacked mode */
    .dsa-mobile-layout-stacked .dsa-animation-container {
        flex: none;
        width: 100%;
        min-height: 75vh;
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Canvas - responsive sizing */
    .dsa-mobile-layout-stacked .dsa-animation-canvas {
        max-width: 100%;
        max-height: 60vh;
    }

    /* Hide text area completely in stacked mode - we'll use floating indicators instead */
    .dsa-mobile-layout-stacked .dsa-text-reveal-area {
        display: none !important;
    }

    /* Floating stage indicators - appear below animation */
    .dsa-mobile-stage-indicators {
        position: relative;
        display: flex;
        gap: 8px;
        z-index: 100;
        padding: 0;
        margin-top: -20px;
        flex-wrap: wrap;
        justify-content: center;
        max-width: 100%;
    }

    /* Hide all indicators by default */
    .dsa-mobile-stage-indicator {
        display: none;
        flex-direction: column;
        align-items: center;
        gap: 3px;
        padding: 0;
        background: transparent;
        border: none;
        font-size: 11px;
        font-weight: 600;
        color: #1a1a2e;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .dsa-mobile-stage-indicator .dsa-stage-number {
        font-weight: 700;
        font-size: 10px;
        letter-spacing: 0.05em;
        text-transform: uppercase;
        color: #666;
    }

    /* Title row - horizontal layout for title + icon */
    .dsa-mobile-stage-indicator .dsa-stage-title-row {
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .dsa-mobile-stage-indicator .dsa-stage-name {
        font-weight: 600;
        font-size: 12px;
        color: #1a1a2e;
        white-space: nowrap;
    }

    /* Only show the active indicator */
    .dsa-mobile-stage-indicator.active {
        display: flex;
    }

    .dsa-mobile-stage-indicator:active {
        opacity: 0.7;
    }

    .dsa-mobile-stage-indicator svg {
        width: 16px;
        height: 16px;
        flex-shrink: 0;
        color: #2271b1;
    }

    /* Mobile modal/slide-up sheet */
    .dsa-mobile-modal {
        display: block; /* Override desktop display: none */
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 999999;
        visibility: hidden;
        opacity: 0;
        transition: visibility 0s 0.3s, opacity 0.3s ease;
    }

    .dsa-mobile-modal.active {
        visibility: visible;
        opacity: 1;
        transition: visibility 0s 0s, opacity 0.3s ease;
    }

    .dsa-mobile-modal-backdrop {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        cursor: pointer;
    }

    .dsa-mobile-modal-content {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        max-height: 85vh;
        background: white;
        border-radius: 20px 20px 0 0;
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.25);
        transform: translateY(100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }

    .dsa-mobile-modal.active .dsa-mobile-modal-content {
        transform: translateY(0);
    }

    .dsa-mobile-modal-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 12px 20px 10px;
        border-bottom: 1px solid #e5e5e5;
        flex-shrink: 0;
    }

    .dsa-mobile-modal-header h3 {
        margin: 0;
        font-size: 16px;
        font-weight: 700;
        color: #1a1a2e;
    }

    .dsa-mobile-modal-close {
        background: none;
        border: none;
        padding: 6px;
        cursor: pointer;
        color: #666;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        transition: background 0.2s ease;
    }

    .dsa-mobile-modal-close:active {
        background: #f0f0f0;
    }

    .dsa-mobile-modal-close svg {
        width: 18px;
        height: 18px;
    }

    .dsa-mobile-modal-body {
        padding: 16px 20px;
        overflow-y: auto;
        flex: 1;
        -webkit-overflow-scrolling: touch;
    }

    .dsa-mobile-modal-body .dsa-stage-badge {
        margin-bottom: 12px;
    }

    .dsa-mobile-modal-body .dsa-label-title {
        font-size: 1.5rem;
        margin-bottom: 12px;
    }

    .dsa-mobile-modal-body .dsa-label-subtitle {
        font-size: 1rem;
        margin-bottom: 16px;
    }

    .dsa-mobile-modal-body .dsa-label-detail {
        font-size: 0.95rem;
        line-height: 1.6;
    }

    .dsa-mobile-modal-body .dsa-details-link {
        width: 100%;
        justify-content: center;
        margin-top: 20px;
    }

    /* ==========================================================================
       MOBILE OVERLAY LAYOUT
       ========================================================================== */

    /* Animation wrapper - constrained height, contained scrolling */
    .dsa-section-apple-reveal.dsa-mobile-layout-overlay .dsa-animation-wrapper {
        position: relative !important;
        height: 50vh !important; /* Fixed height for medium default */
        min-height: 50vh !important;
        max-height: 50vh !important;
        overflow-y: auto !important; /* Allow internal scrolling */
        overflow-x: hidden !important;
    }

    /* Sticky wrapper - fills wrapper, allows internal scroll */
    .dsa-section-apple-reveal.dsa-mobile-layout-overlay .dsa-sticky-wrapper {
        display: block !important;
        flex-direction: initial !important;
        position: relative !important; /* Not sticky, just relative */
        height: auto !important; /* Let it be tall internally */
        min-height: 100% !important; /* At least fill parent */
        gap: 0 !important;
    }

    /* Animation container - sticky positioned to stay in view */
    .dsa-section-apple-reveal.dsa-mobile-layout-overlay .dsa-animation-container {
        position: sticky !important;
        top: 0 !important;
        width: 100% !important;
        height: 50vh !important; /* Match wrapper height */
        min-height: 0 !important;
        flex: none !important;
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 1 !important;
    }

    /* Text overlay - positioned over sticky animation */
    .dsa-section-apple-reveal.dsa-mobile-layout-overlay .dsa-text-reveal-area {
        position: absolute !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        max-height: 50% !important;
        padding: 1rem 1.5rem !important;
        background: linear-gradient(to top, rgba(255,255,255,1) 0%, rgba(255,255,255,0.95) 60%, rgba(255,255,255,0) 100%) !important;
        overflow-y: auto !important;
        z-index: 10 !important;
        flex: none !important;
        pointer-events: auto !important;
    }

    /* Text blocks in overlay mode - adjust positioning */
    .dsa-mobile-layout-overlay .dsa-text-block {
        position: static; /* Not absolutely positioned in overlay mode */
        transform: none;
        padding: 0.5rem 0;
    }

    .dsa-mobile-layout-overlay .dsa-text-block.dsa-active {
        transform: none;
    }

    .dsa-mobile-layout-overlay .dsa-text-placeholder {
        position: static;
        transform: none;
        padding: 0.5rem 0;
    }

    /* Canvas - fill container in overlay mode */
    .dsa-mobile-layout-overlay .dsa-animation-canvas {
        width: 100%;
        height: 100%;
        object-fit: contain;
        max-width: 100%;
        max-height: 100%;
    }

    /* ==========================================================================
       MOBILE ANIMATION SIZE VARIANTS
       ========================================================================== */

    /* Small - 40vh */
    .dsa-section-apple-reveal.dsa-mobile-small.dsa-mobile-layout-overlay .dsa-animation-wrapper {
        height: 40vh !important;
        min-height: 40vh !important;
        max-height: 40vh !important;
    }

    /* Medium - 50vh (default) - already set above */

    /* Large - 60vh */
    .dsa-section-apple-reveal.dsa-mobile-large.dsa-mobile-layout-overlay .dsa-animation-wrapper {
        height: 60vh !important;
        min-height: 60vh !important;
        max-height: 60vh !important;
    }

    .dsa-stage-badge {
        font-size: 10px;
        padding: 4px 12px;
        margin: 0 0 8px 0;
    }

    .dsa-label-title {
        font-size: 1.5rem;
        margin: 0 0 8px 0;
    }

    .dsa-label-subtitle {
        font-size: 1rem;
        margin: 0 0 8px 0;
    }

    .dsa-label-detail {
        font-size: 0.95rem;
    }

    .dsa-details-link {
        width: 100%;
        justify-content: center;
        margin-top: 12px;
    }

    /* Smaller text in overlay mode to fit better */
    .dsa-mobile-layout-overlay .dsa-stage-badge {
        font-size: 9px;
        padding: 3px 10px;
        margin: 0 0 6px 0;
    }

    .dsa-mobile-layout-overlay .dsa-label-title {
        font-size: 1.25rem;
        margin: 0 0 6px 0;
    }

    .dsa-mobile-layout-overlay .dsa-label-subtitle {
        font-size: 0.9rem;
        margin: 0 0 6px 0;
    }

    .dsa-mobile-layout-overlay .dsa-label-detail {
        font-size: 0.85rem;
    }

    .dsa-mobile-layout-overlay .dsa-details-link {
        margin-top: 8px;
        font-size: 14px;
        padding: 10px 20px;
    }
}

/* ==========================================================================
   MOBILE: DISABLE COMPLEX ANIMATIONS
   ========================================================================== */

@media (max-width: 768px) {
    /* Reset all effects to simple fade on mobile, but keep vertical centering */
    .dsa-effect-slide-left .dsa-text-block,
    .dsa-effect-slide-right .dsa-text-block,
    .dsa-effect-slide-up .dsa-text-block,
    .dsa-effect-slide-down .dsa-text-block,
    .dsa-effect-zoom .dsa-text-block,
    .dsa-effect-flip .dsa-text-block {
        transform: translateY(-50%);
    }

    .dsa-effect-slide-left .dsa-text-block.dsa-active,
    .dsa-effect-slide-right .dsa-text-block.dsa-active,
    .dsa-effect-slide-up .dsa-text-block.dsa-active,
    .dsa-effect-slide-down .dsa-text-block.dsa-active,
    .dsa-effect-zoom .dsa-text-block.dsa-active,
    .dsa-effect-flip .dsa-text-block.dsa-active {
        transform: translateY(-50%);
    }

    .dsa-effect-slide-left .dsa-text-block.dsa-exiting,
    .dsa-effect-slide-right .dsa-text-block.dsa-exiting,
    .dsa-effect-slide-up .dsa-text-block.dsa-exiting,
    .dsa-effect-slide-down .dsa-text-block.dsa-exiting,
    .dsa-effect-zoom .dsa-text-block.dsa-exiting,
    .dsa-effect-flip .dsa-text-block.dsa-exiting {
        transform: translateY(-50%);
    }
}

/* ==========================================================================
   ACCESSIBILITY
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .dsa-text-block,
    .dsa-text-placeholder {
        transition: none;
    }

    /* Also disable transforms for reduced motion, but keep vertical centering */
    [class*="dsa-effect-"] .dsa-text-block,
    [class*="dsa-effect-"] .dsa-text-block.dsa-active,
    [class*="dsa-effect-"] .dsa-text-block.dsa-exiting {
        transform: translateY(-50%);
    }
}

/* ==========================================================================
   DEBUG MODE (Enable via Settings > Debug Mode)
   ========================================================================== */

body.dsa-debug-mode .dsa-mobile-layout-overlay .dsa-animation-wrapper {
    outline: 3px solid red !important;
}

body.dsa-debug-mode .dsa-mobile-layout-overlay .dsa-sticky-wrapper {
    outline: 3px solid blue !important;
}

body.dsa-debug-mode .dsa-mobile-layout-overlay .dsa-animation-container {
    outline: 3px solid green !important;
}

body.dsa-debug-mode .dsa-mobile-layout-overlay .dsa-text-reveal-area {
    outline: 3px solid orange !important;
    background: rgba(255, 165, 0, 0.3) !important;
}

body.dsa-debug-mode .dsa-mobile-layout-overlay .dsa-animation-wrapper::before {
    content: 'Animation Wrapper (RED)';
    position: absolute;
    top: 0;
    left: 0;
    background: red;
    color: white;
    padding: 2px 5px;
    font-size: 10px;
    z-index: 9999;
}

body.dsa-debug-mode .dsa-mobile-layout-overlay .dsa-sticky-wrapper::before {
    content: 'Sticky Wrapper (BLUE) - Height: ' attr(style);
    position: absolute;
    top: 20px;
    left: 0;
    background: blue;
    color: white;
    padding: 2px 5px;
    font-size: 10px;
    z-index: 9999;
}

    /* Size-specific sticky wrapper heights */
    .dsa-section-apple-reveal.dsa-mobile-small.dsa-mobile-layout-overlay .dsa-sticky-wrapper {
        height: 40vh !important;
        max-height: 40vh !important;
    }

    .dsa-section-apple-reveal.dsa-mobile-medium.dsa-mobile-layout-overlay .dsa-sticky-wrapper {
        height: 50vh !important;
        max-height: 50vh !important;
    }

    .dsa-section-apple-reveal.dsa-mobile-large.dsa-mobile-layout-overlay .dsa-sticky-wrapper {
        height: 60vh !important;
        max-height: 60vh !important;
    }