/* Hero Animation Styles - Paper → Digital → AI Journey */

:root {
    /* Animation Colors */
    --paper-bg: #f5f1e8;
    --paper-text: #2c2416;
    --paper-accent: #8b6f47;
    --digital-bg: #1a1a2e;
    --digital-accent: #00d4ff;
    --digital-glow: rgba(0, 212, 255, 0.3);
    --ai-bg: #0a0a0f;
    --ai-primary: #ff6b4a;
    --ai-secondary: #ff8c6a;
    --ai-glow: rgba(255, 107, 74, 0.4);
    
    /* Animation Timings */
    --anim-duration: 15s;
    --fade-duration: 0.8s;
    --preloader-duration: 1.2s;
}

/* Preloader */
.hero-preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #0a0a0a;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity var(--preloader-duration) ease;
}

/* Light mode preloader background */
@media (prefers-color-scheme: light) {
    .hero-preloader {
        background: #f5f5f5;
    }
}

.hero-preloader.hidden {
    opacity: 0;
    pointer-events: none;
}

.preloader-video {
    width: 300px;
    height: 300px;
    max-width: 400px;
    max-height: 400px;
    min-width: 200px;
    min-height: 200px;
    opacity: 0;
    animation: preloaderFadeIn 0.6s ease forwards;
    object-fit: cover;
    display: block;
    margin: 0 auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    overflow: hidden;
    z-index: 1;
}

/* Light mode video - show by default */
.preloader-video-light {
    display: block;
}

.preloader-video-dark {
    display: none;
}

/* Dark mode - show dark video, hide light video */
@media (prefers-color-scheme: dark) {
    .preloader-video-light {
        display: none;
    }
    
    .preloader-video-dark {
        display: block;
    }
}

.preloader-logo-fallback {
    width: auto;
    height: 80px;
    max-width: 200px;
    opacity: 0;
    animation: preloaderFadeIn 0.6s ease forwards;
    object-fit: contain;
    display: block;
}

@keyframes preloaderFadeIn {
    to {
        opacity: 1;
    }
}

/* Hero Animation Container - Full Page Flow Background */
.hero-animation-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    min-height: 100vh;
    overflow: visible;
    background: transparent;
    z-index: 1;
    pointer-events: none;
    visibility: visible;
    display: block;
    /* Ensure it stays in background */
    will-change: transform;
}

/* Allow animation to extend beyond viewport */
.hero-animation-container svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    min-height: 100vh;
    visibility: visible;
    display: block;
}

/* Stage Containers */
.animation-stage {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    min-height: 100vh;
    opacity: 0;
    pointer-events: none;
    will-change: opacity, transform;
    visibility: visible;
}

/* Stage 1: Paper */
.stage-paper {
    background: transparent;
}

/* Paper elements - Dark mode (default) */
.stage-paper .paper-sheet {
    fill: #ffffff;
    stroke: #8b6f47;
    stroke-width: 2;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.stage-paper .paper-text {
    fill: #1a1a1a;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    opacity: 0.9;
}

.stage-paper .paper-stamp {
    fill: #d32f2f;
    opacity: 0.8;
}

.stage-paper .paper-arrow {
    stroke: #8b6f47;
    stroke-width: 3;
    fill: none;
}

/* Arrow marker styling */
.arrow-marker polygon {
    fill: #8b6f47;
}

.arrow-marker-light polygon {
    fill: #d4a574;
}

/* Paper elements - Light mode (inverted) */
@media (prefers-color-scheme: light) {
    .stage-paper .paper-sheet {
        fill: #2c2416;
        stroke: #8b6f47;
        filter: drop-shadow(0 4px 8px rgba(255, 255, 255, 0.3));
    }
    
    .stage-paper .paper-text {
        fill: #f5f1e8;
        opacity: 0.9;
    }
    
    .stage-paper .paper-stamp {
        fill: #ff6b6b;
        opacity: 0.8;
    }
    
    .stage-paper .paper-arrow {
        stroke: #d4a574;
        marker-end: url(#arrowhead-light);
    }
}

/* Stage 2: Digitization */
.stage-digital {
    background: transparent;
}

/* Stage 3: Automation/AI */
.stage-ai {
    background: transparent;
}

/* SVG Elements - Full viewport flow */
.hero-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    min-height: 100vh;
    transform: none;
    max-width: none;
    max-height: none;
    viewBox: "0 0 1200 800";
    preserveAspectRatio: "xMidYMid slice";
}

/* Paper Stage Elements - Base styles (overridden by stage-specific) */
.paper-sheet {
    stroke-width: 2;
}

.paper-text {
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

.paper-stamp {
    opacity: 0.8;
}

.paper-arrow {
    stroke-width: 3;
    fill: none;
    marker-end: url(#arrowhead);
}

/* Digital Stage Elements */
.stage-digital .scan-line {
    stroke: #00d4ff;
    stroke-width: 2;
    opacity: 0.7;
    filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.6));
}

.stage-digital .ocr-highlight {
    fill: #00d4ff;
    opacity: 0.25;
    animation: ocrPulse 1.5s ease-in-out infinite;
}

@keyframes ocrPulse {
    0%, 100% { opacity: 0.25; }
    50% { opacity: 0.45; }
}

.stage-digital .ui-panel {
    fill: rgba(255, 255, 255, 0.08);
    stroke: #00d4ff;
    stroke-width: 1.5;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.4));
}

/* Digital elements - Light mode */
@media (prefers-color-scheme: light) {
    .stage-digital .scan-line {
        stroke: #0066cc;
        filter: drop-shadow(0 0 8px rgba(0, 102, 204, 0.8));
    }
    
    .stage-digital .ocr-highlight {
        fill: #0066cc;
        opacity: 0.3;
    }
    
    .stage-digital .ui-panel {
        fill: rgba(0, 0, 0, 0.1);
        stroke: #0066cc;
        filter: drop-shadow(0 0 12px rgba(0, 102, 204, 0.5));
    }
}

/* AI Stage Elements - Dark mode (default) */
.stage-ai .ai-node {
    fill: #ff6b4a;
    filter: drop-shadow(0 0 15px rgba(255, 107, 74, 0.6));
    opacity: 0;
}

.stage-ai .ai-connection {
    stroke: #ff6b4a;
    stroke-width: 2.5;
    fill: none;
    opacity: 0;
    filter: drop-shadow(0 0 6px rgba(255, 107, 74, 0.5));
}

.stage-ai .data-flow {
    stroke: #ff8c6a;
    stroke-width: 3;
    fill: none;
    opacity: 0;
    stroke-dasharray: 10 5;
    animation: dataFlow 2s linear infinite;
}

@keyframes dataFlow {
    to {
        stroke-dashoffset: -15;
    }
}

.stage-ai .ai-core {
    fill: #ff6b4a;
    filter: drop-shadow(0 0 25px rgba(255, 107, 74, 0.7));
    opacity: 0;
    animation: aiCorePulse 2s ease-in-out infinite;
}

@keyframes aiCorePulse {
    0%, 100% {
        opacity: 0.9;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

/* AI elements - Light mode (enhanced visibility) */
@media (prefers-color-scheme: light) {
    .stage-ai .ai-node {
        fill: #ff4500;
        filter: drop-shadow(0 0 18px rgba(255, 69, 0, 0.8));
    }
    
    .stage-ai .ai-connection {
        stroke: #ff4500;
        filter: drop-shadow(0 0 8px rgba(255, 69, 0, 0.7));
    }
    
    .stage-ai .data-flow {
        stroke: #ff6b4a;
        filter: drop-shadow(0 0 6px rgba(255, 107, 74, 0.6));
    }
    
    .stage-ai .ai-core {
        fill: #ff4500;
        filter: drop-shadow(0 0 30px rgba(255, 69, 0, 0.9));
    }
}

/* Parallax Layers */
.parallax-layer {
    position: absolute;
    width: 100%;
    height: 100%;
    will-change: transform;
}

.layer-back {
    z-index: 1;
}

.layer-mid {
    z-index: 2;
}

.layer-front {
    z-index: 3;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .hero-animation-container {
        display: none;
    }
    
    .hero-static-illustration {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: transparent;
        z-index: 0;
        pointer-events: none;
    }
    
    .hero-static-illustration svg {
        width: 100%;
        height: 100vh;
        opacity: 0.2;
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero-svg {
        height: 100vh;
        min-height: 100vh;
    }
    
    .stage-paper .paper-text {
        font-size: 10px;
    }
    
    .hero-animation-container {
        height: 100vh;
        min-height: 100vh;
    }
}

@media (max-width: 480px) {
    .hero-svg {
        height: 100vh;
        min-height: 100vh;
    }
    
    .stage-paper .paper-text {
        font-size: 8px;
    }
}

/* Hero Content Overlay */
.hero .hero-content {
    opacity: 0;
    animation: heroContentFadeIn 1s ease forwards;
    animation-delay: 0.5s;
}

@keyframes heroContentFadeIn {
    to {
        opacity: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    .hero .hero-content {
        animation: none;
        opacity: 1;
    }
}

/* Hide static illustration by default */
.hero-static-illustration {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
}