* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --neo-bg: #e6e6e6;
    --neo-surface: #f0f0f0;
    --neo-light: #ffffff;
    --neo-dark: #d1d1d1;
    --neo-text: #2c2c2c;
    --neo-text-secondary: #666666;
    --neo-accent: #ff6b35;
    --neo-accent-dark: #e55a2e;
    --neo-shadow-light: #ffffff;
    --neo-shadow-dark: #bebebe;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--neo-bg);
    color: var(--neo-text);
    overflow: hidden;
    background-image: 
        radial-gradient(circle at 20% 50%, #ffffff 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, #f5f5f5 0%, transparent 50%);
}

.slideshow-container {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide {
    display: none;
    width: 90%;
    max-width: 1000px;
    height: 80vh;
    background: var(--neo-surface);
    border-radius: 25px;
    padding: 40px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: 
        20px 20px 40px var(--neo-shadow-dark),
        -20px -20px 40px var(--neo-shadow-light),
        inset 0 0 0 1px rgba(255,255,255,0.1);
}

.slide.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

h1 {
    font-size: 2.5em;
    margin-bottom: 20px;
    color: var(--neo-text);
    text-align: center;
    animation: titleFadeIn 1s ease-out 0.3s both;
    font-weight: 700;
    text-shadow: 
        2px 2px 4px rgba(190, 190, 190, 0.3),
        -1px -1px 2px rgba(255, 255, 255, 0.7);
}

h2 {
    font-size: 2em;
    margin-bottom: 30px;
    color: var(--neo-text);
    text-align: center;
    animation: headerSlideIn 0.8s ease-out 0.2s both;
    font-weight: 600;
    position: relative;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--neo-accent);
    border-radius: 2px;
    box-shadow: 
        2px 2px 4px rgba(190, 190, 190, 0.3),
        -1px -1px 2px rgba(255, 255, 255, 0.7);
}

.content {
    display: flex;
    gap: 30px;
    height: calc(100% - 120px);
    align-items: center;
}

.text-content {
    flex: 1;
    font-size: 1.1em;
    line-height: 1.6;
    animation: contentFadeIn 0.8s ease-out 0.4s both;
    color: var(--neo-text);
}

.visual-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: visualSlideIn 1s ease-out 0.6s both;
}

.demo-box {
    width: 300px;
    height: 200px;
    position: relative;
    background: var(--neo-light);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 
        inset 8px 8px 16px var(--neo-shadow-dark),
        inset -8px -8px 16px var(--neo-shadow-light);
}

/* Title Slide Animations */
.title-content {
    text-align: center;
    width: 100%;
}

.subtitle {
    color: var(--neo-accent);
    margin-bottom: 40px;
    animation: subtitleBounce 1s ease-out 0.5s both;
    font-weight: 600;
    text-shadow: 
        2px 2px 4px rgba(190, 190, 190, 0.2),
        -1px -1px 2px rgba(255, 255, 255, 0.5);
}

.intro-text {
    font-size: 1.3em;
    line-height: 1.8;
    color: var(--neo-text-secondary);
}

.main-intro {
    animation: introFadeIn 0.8s ease-out 0.7s both;
}

.navigate-text {
    font-size: 1.1em;
    color: var(--neo-text-secondary);
    animation: navigateSlideUp 0.8s ease-out 0.9s both;
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
    font-size: 1em;
}

.principle-item {
    animation: principleItemPop 0.6s ease-out both;
    transform: scale(0.8);
    opacity: 0;
    padding: 15px;
    background: var(--neo-surface);
    border-radius: 12px;
    box-shadow: 
        6px 6px 12px var(--neo-shadow-dark),
        -6px -6px 12px var(--neo-shadow-light);
    color: var(--neo-text);
    font-weight: 500;
}

.principle-item:nth-child(1) { animation-delay: 1.1s; }
.principle-item:nth-child(2) { animation-delay: 1.2s; }
.principle-item:nth-child(3) { animation-delay: 1.3s; }
.principle-item:nth-child(4) { animation-delay: 1.4s; }
.principle-item:nth-child(5) { animation-delay: 1.5s; }
.principle-item:nth-child(6) { animation-delay: 1.6s; }

/* Rule of Thirds Animations */
.rule-of-thirds {
    background: var(--neo-light);
}

.grid-line {
    position: absolute;
    background: var(--neo-accent);
    opacity: 0;
    animation: gridLineGrow 1s ease-out both;
    box-shadow: 
        0 0 8px rgba(255, 107, 53, 0.3),
        inset 1px 1px 2px rgba(255, 255, 255, 0.8);
}

.grid-line-v1, .grid-line-v2 {
    width: 3px;
    height: 100%;
    top: 0;
    border-radius: 1.5px;
}

.grid-line-v1 {
    left: 33.33%;
    animation-delay: 0.8s;
}

.grid-line-v2 {
    left: 66.66%;
    animation-delay: 1s;
}

.grid-line-h1, .grid-line-h2 {
    height: 3px;
    width: 100%;
    left: 0;
    border-radius: 1.5px;
}

.grid-line-h1 {
    top: 33.33%;
    animation-delay: 0.9s;
}

.grid-line-h2 {
    top: 66.66%;
    animation-delay: 1.1s;
}

.focus-point {
    width: 14px;
    height: 14px;
    background: var(--neo-accent);
    border-radius: 50%;
    position: absolute;
    opacity: 0;
    transform: scale(0);
    animation: focusPointPulse 0.8s ease-out both;
    box-shadow: 
        3px 3px 6px var(--neo-shadow-dark),
        -2px -2px 4px var(--neo-shadow-light),
        0 0 0 2px var(--neo-light);
}

.fp1 {
    top: calc(33.33% - 7px);
    left: calc(33.33% - 7px);
    animation-delay: 1.3s;
}

.fp2 {
    top: calc(33.33% - 7px);
    left: calc(66.66% - 7px);
    animation-delay: 1.4s;
}

.fp3 {
    top: calc(66.66% - 7px);
    left: calc(33.33% - 7px);
    animation-delay: 1.5s;
}

.fp4 {
    top: calc(66.66% - 7px);
    left: calc(66.66% - 7px);
    animation-delay: 1.6s;
}

/* Grid System Animations */
.grid-demo {
    background: var(--neo-light);
    position: relative;
}

.grid-column {
    position: absolute;
    width: 3px;
    height: 100%;
    background: var(--neo-accent);
    opacity: 0;
    transform: scaleY(0);
    animation: columnGrow 0.8s ease-out both;
    border-radius: 1.5px;
    box-shadow: 
        1px 1px 3px var(--neo-shadow-dark),
        -1px -1px 2px var(--neo-shadow-light);
}

.gc1 { left: 20%; animation-delay: 0.8s; }
.gc2 { left: 40%; animation-delay: 0.9s; }
.gc3 { left: 60%; animation-delay: 1s; }
.gc4 { left: 80%; animation-delay: 1.1s; }

.grid-row {
    position: absolute;
    height: 3px;
    width: 100%;
    background: var(--neo-accent);
    opacity: 0;
    transform: scaleX(0);
    animation: rowGrow 0.8s ease-out both;
    border-radius: 1.5px;
    box-shadow: 
        1px 1px 3px var(--neo-shadow-dark),
        -1px -1px 2px var(--neo-shadow-light);
}

.gr1 { top: 25%; animation-delay: 1.2s; }
.gr2 { top: 50%; animation-delay: 1.3s; }
.gr3 { top: 75%; animation-delay: 1.4s; }

.grid-content {
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
}

.content-block {
    position: absolute;
    background: var(--neo-surface);
    border-radius: 8px;
    padding: 8px;
    font-size: 11px;
    font-weight: 600;
    color: var(--neo-text);
    opacity: 0;
    transform: scale(0.8);
    animation: contentBlockFade 0.6s ease-out both;
    box-shadow: 
        4px 4px 8px var(--neo-shadow-dark),
        -3px -3px 6px var(--neo-shadow-light);
}

.cb1 {
    top: 8px;
    left: 8px;
    right: 8px;
    height: 24px;
    animation-delay: 1.5s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cb2 {
    top: 40px;
    left: 8px;
    width: calc(60% - 4px);
    bottom: 8px;
    animation-delay: 1.6s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cb3 {
    top: 40px;
    right: 8px;
    width: calc(35% - 4px);
    bottom: 8px;
    animation-delay: 1.7s;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Golden Ratio Animations */
.golden-ratio {
    display: flex;
    position: relative;
    overflow: hidden;
    border-radius: 20px;
}

.golden-section {
    position: relative;
    height: 100%;
}

.large-section {
    width: 61.8%;
    background: linear-gradient(135deg, var(--neo-accent), var(--neo-accent-dark));
    animation: sectionSlideLeft 1s ease-out 0.8s both;
    transform: translateX(-100%);
    border-radius: 20px 0 0 20px;
    box-shadow: 
        inset 6px 6px 12px rgba(0,0,0,0.1),
        inset -2px -2px 4px rgba(255,255,255,0.3);
}

.small-section {
    width: 38.2%;
    background: var(--neo-surface);
    animation: sectionSlideRight 1s ease-out 1s both;
    transform: translateX(100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0 20px 20px 0;
    box-shadow: 
        inset 6px 6px 12px var(--neo-shadow-dark),
        inset -6px -6px 12px var(--neo-shadow-light);
}

.spiral-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.fibonacci-spiral {
    width: 80px;
    height: 80px;
    border: 4px solid rgba(255,255,255,0.9);
    border-radius: 50%;
    border-left: transparent;
    border-bottom: transparent;
    animation: spiralRotate 3s ease-in-out 1.2s both;
    opacity: 0;
    box-shadow: 0 0 15px rgba(255,255,255,0.3);
}

.ratio-label {
    color: var(--neo-text);
    font-weight: 700;
    font-size: 20px;
    animation: labelPulse 2s ease-in-out 1.4s infinite;
    text-shadow: 
        2px 2px 4px var(--neo-shadow-dark),
        -1px -1px 2px var(--neo-shadow-light);
}

.ratio-indicator {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--neo-text);
    font-size: 12px;
    text-align: center;
    background: var(--neo-surface);
    padding: 8px 16px;
    border-radius: 20px;
    opacity: 0;
    animation: indicatorFadeIn 0.8s ease-out 1.6s both;
    font-weight: 600;
    box-shadow: 
        4px 4px 8px var(--neo-shadow-dark),
        -3px -3px 6px var(--neo-shadow-light);
}

/* Visual Hierarchy Animations */
.hierarchy-demo {
    background: var(--neo-light);
    padding: 25px;
    border-radius: 15px;
    height: 100%;
    position: relative;
    overflow: hidden;
    box-shadow: 
        inset 6px 6px 12px var(--neo-shadow-dark),
        inset -6px -6px 12px var(--neo-shadow-light);
}

.hierarchy-h1 {
    font-size: 26px;
    margin-bottom: 18px;
    color: var(--neo-text);
    opacity: 0;
    transform: translateY(-20px);
    animation: hierarchySlideDown 0.8s ease-out 0.8s both;
    font-weight: 700;
}

.hierarchy-h2 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--neo-accent);
    opacity: 0;
    transform: translateY(-20px);
    animation: hierarchySlideDown 0.8s ease-out 1s both;
    font-weight: 600;
}

.hierarchy-p1, .hierarchy-p2 {
    font-size: 15px;
    color: var(--neo-text-secondary);
    margin-bottom: 10px;
    opacity: 0;
    transform: translateY(-20px);
    animation: hierarchySlideDown 0.8s ease-out both;
}

.hierarchy-p1 { animation-delay: 1.2s; }
.hierarchy-p2 { animation-delay: 1.4s; }

.hierarchy-caption {
    font-size: 13px;
    color: var(--neo-text-secondary);
    opacity: 0;
    transform: translateY(-20px);
    animation: hierarchySlideDown 0.8s ease-out 1.6s both;
    font-style: italic;
}

.eye-path {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.eye-tracker {
    position: absolute;
    width: 28px;
    height: 28px;
    background: var(--neo-accent);
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: bold;
    opacity: 0;
    transform: scale(0);
    animation: eyeTrackerPop 0.6s ease-out both;
    box-shadow: 
        4px 4px 8px var(--neo-shadow-dark),
        -2px -2px 4px var(--neo-shadow-light),
        0 0 0 3px var(--neo-light);
}

.et1 {
    top: 25px;
    left: 25px;
    animation-delay: 1.8s;
}

.et2 {
    top: 70px;
    left: 25px;
    animation-delay: 2s;
}

.et3 {
    top: 115px;
    left: 25px;
    animation-delay: 2.2s;
}

/* Whitespace Animations */
.whitespace-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    height: 100%;
}

.comparison-box {
    border-radius: 15px;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    animation: comparisonSlideUp 0.8s ease-out both;
}

.crowded {
    background: var(--neo-light);
    padding: 8px;
    animation-delay: 0.8s;
    box-shadow: 
        inset 8px 8px 16px rgba(255, 107, 53, 0.1),
        inset -4px -4px 8px var(--neo-shadow-light);
}

.spacious {
    background: var(--neo-light);
    padding: 25px;
    animation-delay: 1s;
    box-shadow: 
        inset 6px 6px 12px var(--neo-shadow-dark),
        inset -6px -6px 12px var(--neo-shadow-light);
}

.demo-text {
    font-size: 13px;
    line-height: 1.3;
    position: relative;
    z-index: 2;
    color: var(--neo-text);
}

.spacious .demo-text {
    font-size: 15px;
    line-height: 1.7;
}

.clutter-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.clutter-item {
    position: absolute;
    background: var(--neo-accent);
    opacity: 0;
    animation: clutterFloat 2s ease-in-out infinite;
    box-shadow: 
        2px 2px 4px var(--neo-shadow-dark),
        -1px -1px 2px var(--neo-shadow-light);
}

.ci1 {
    width: 22px;
    height: 22px;
    top: 12px;
    right: 12px;
    border-radius: 50%;
    animation-delay: 1.2s;
}

.ci2 {
    width: 18px;
    height: 18px;
    bottom: 25px;
    left: 12px;
    border-radius: 25%;
    animation-delay: 1.4s;
}

.ci3 {
    width: 28px;
    height: 12px;
    top: 50%;
    right: 25px;
    border-radius: 6px;
    animation-delay: 1.6s;
}

.breathing-space {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 35px;
    height: 35px;
    border: 3px dashed var(--neo-accent);
    border-radius: 50%;
    opacity: 0;
    animation: breathingEffect 3s ease-in-out 1.2s infinite;
    box-shadow: 0 0 10px rgba(255, 107, 53, 0.2);
}

/* Alignment Animations */
.alignment-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    height: 100%;
}

.alignment-example {
    background: var(--neo-light);
    padding: 20px;
    border-radius: 15px;
    position: relative;
    opacity: 0;
    transform: translateX(-20px);
    animation: alignmentSlideIn 0.8s ease-out both;
    color: var(--neo-text);
    box-shadow: 
        inset 6px 6px 12px var(--neo-shadow-dark),
        inset -6px -6px 12px var(--neo-shadow-light);
}

.left-aligned {
    text-align: left;
    animation-delay: 0.8s;
}

.center-aligned {
    text-align: center;
    animation-delay: 1s;
    transform: translateX(20px);
}

.alignment-guide {
    position: absolute;
    background: var(--neo-accent);
    opacity: 0;
    animation: guideLineAppear 1s ease-out both;
    border-radius: 1px;
    box-shadow: 
        0 0 8px rgba(255, 107, 53, 0.4),
        2px 2px 4px var(--neo-shadow-dark);
}

.guide-left {
    left: 20px;
    top: 15px;
    bottom: 15px;
    width: 3px;
    animation-delay: 1.2s;
}

.guide-center {
    left: 50%;
    top: 15px;
    bottom: 15px;
    width: 3px;
    transform: translateX(-50%);
    animation-delay: 1.4s;
}

/* Contrast Animations */
.contrast-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    height: 100%;
}

.contrast-example {
    padding: 25px;
    border-radius: 15px;
    position: relative;
    opacity: 0;
    transform: scale(0.9);
    animation: contrastPop 0.8s ease-out both;
}

.low-contrast {
    background: var(--neo-dark);
    color: #a0a0a0;
    animation-delay: 0.8s;
    box-shadow: 
        inset 6px 6px 12px #c0c0c0,
        inset -6px -6px 12px #e2e2e2;
}

.high-contrast {
    background: var(--neo-text);
    color: var(--neo-light);
    animation-delay: 1s;
    box-shadow: 
        inset 6px 6px 12px #1a1a1a,
        inset -6px -6px 12px #3e3e3e;
}

.contrast-meter {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 70px;
    height: 10px;
    background: var(--neo-surface);
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 
        inset 3px 3px 6px var(--neo-shadow-dark),
        inset -2px -2px 4px var(--neo-shadow-light);
}

.meter-fill {
    height: 100%;
    border-radius: 5px;
    animation: meterFill 2s ease-out both;
    box-shadow: 
        0 0 8px rgba(255, 107, 53, 0.3),
        inset 1px 1px 2px rgba(255, 255, 255, 0.3);
}

.low-meter .meter-fill {
    background: linear-gradient(90deg, var(--neo-accent), var(--neo-accent-dark));
    width: 30%;
    animation-delay: 1.2s;
}

.high-meter .meter-fill {
    background: linear-gradient(90deg, #4CAF50, #2E7D32);
    width: 90%;
    animation-delay: 1.4s;
}

/* Summary Animations */
.summary-content {
    width: 100%;
}

.summary-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.summary-column {
    opacity: 0;
    transform: translateY(20px);
    animation: summaryColumnSlide 0.8s ease-out both;
}

.summary-column:first-child {
    animation-delay: 0.8s;
}

.summary-column:last-child {
    animation-delay: 1s;
}

.summary-title {
    color: var(--neo-accent);
    margin-bottom: 20px;
    position: relative;
    font-weight: 600;
    text-shadow: 
        2px 2px 4px var(--neo-shadow-dark),
        -1px -1px 2px var(--neo-shadow-light);
}

.summary-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--neo-accent);
    border-radius: 1.5px;
    animation: underlineGrow 1s ease-out both;
    box-shadow: 
        1px 1px 3px var(--neo-shadow-dark),
        -1px -1px 2px var(--neo-shadow-light);
}

.summary-column:first-child .summary-title::after {
    animation-delay: 1.2s;
}

.summary-column:last-child .summary-title::after {
    animation-delay: 1.4s;
}

.summary-item {
    opacity: 0;
    transform: translateX(-10px);
    animation: summaryItemSlide 0.6s ease-out both;
    color: var(--neo-text);
}

.summary-item:nth-child(1) { animation-delay: 1.6s; }
.summary-item:nth-child(2) { animation-delay: 1.7s; }
.summary-item:nth-child(3) { animation-delay: 1.8s; }
.summary-item:nth-child(4) { animation-delay: 1.9s; }

.final-message {
    text-align: center;
    background: var(--neo-surface);
    padding: 35px;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: finalMessageSlide 1s ease-out 2s both;
    box-shadow: 
        12px 12px 24px var(--neo-shadow-dark),
        -12px -12px 24px var(--neo-shadow-light);
    border-left: 6px solid var(--neo-accent);
}

.final-message h3 {
    color: var(--neo-text);
    margin-bottom: 18px;
    font-weight: 600;
}

.final-message p {
    font-size: 1.1em;
    line-height: 1.6;
    color: var(--neo-text-secondary);
}

.design-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    opacity: 0;
    animation: floatingShapes 4s ease-in-out infinite;
    box-shadow: 
        3px 3px 6px var(--neo-shadow-dark),
        -2px -2px 4px var(--neo-shadow-light);
}

.fs1 {
    width: 24px;
    height: 24px;
    background: var(--neo-accent);
    border-radius: 50%;
    top: 20%;
    left: 10%;
    animation-delay: 2.5s;
}

.fs2 {
    width: 18px;
    height: 18px;
    background: var(--neo-text);
    border-radius: 25%;
    top: 70%;
    right: 15%;
    animation-delay: 3s;
}

.fs3 {
    width: 30px;
    height: 12px;
    background: var(--neo-accent);
    border-radius: 6px;
    top: 40%;
    right: 20%;
    animation-delay: 3.5s;
}

/* Navigation */
.navigation {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-btn {
    background: var(--neo-surface);
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    color: var(--neo-text);
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 
        8px 8px 16px var(--neo-shadow-dark),
        -8px -8px 16px var(--neo-shadow-light);
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 53, 0.1), transparent);
    transition: left 0.5s ease;
}

.nav-btn:hover::before {
    left: 100%;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 
        10px 10px 20px var(--neo-shadow-dark),
        -10px -10px 20px var(--neo-shadow-light);
    color: var(--neo-accent);
}

.nav-btn:active {
    transform: translateY(0);
    box-shadow: 
        inset 4px 4px 8px var(--neo-shadow-dark),
        inset -4px -4px 8px var(--neo-shadow-light);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: 
        inset 4px 4px 8px var(--neo-shadow-dark),
        inset -4px -4px 8px var(--neo-shadow-light);
}

.slide-counter {
    background: var(--neo-surface);
    padding: 12px 24px;
    border-radius: 20px;
    color: var(--neo-text);
    font-weight: 600;
    font-size: 16px;
    box-shadow: 
        6px 6px 12px var(--neo-shadow-dark),
        -6px -6px 12px var(--neo-shadow-light);
    border: 2px solid var(--neo-accent);
}

.key-points {
    background: var(--neo-light);
    padding: 25px;
    border-radius: 15px;
    margin: 25px 0;
    border-left: 6px solid var(--neo-accent);
    box-shadow: 
        8px 8px 16px var(--neo-shadow-dark),
        -8px -8px 16px var(--neo-shadow-light);
}

.key-points h3 {
    color: var(--neo-text);
    margin-bottom: 15px;
    font-weight: 600;
    font-size: 18px;
}

.key-points ul {
    list-style: none;
    padding: 0;
}

.key-points li {
    padding: 8px 0;
    position: relative;
    padding-left: 25px;
    color: var(--neo-text);
    line-height: 1.5;
}

.key-points li:before {
    content: "•";
    color: var(--neo-accent);
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 20px;
    top: 5px;
}

.key-points li strong {
    color: var(--neo-accent);
    font-weight: 600;
}

/* Enhanced Neomorphism Effects */
.demo-box:hover {
    transform: scale(1.02);
    transition: transform 0.3s ease-out;
    box-shadow: 
        inset 10px 10px 20px var(--neo-shadow-dark),
        inset -10px -10px 20px var(--neo-shadow-light);
}

.focus-point {
    cursor: pointer;
    transition: all 0.3s ease-out;
}

.focus-point:hover {
    transform: scale(1.3);
    box-shadow: 
        6px 6px 12px var(--neo-shadow-dark),
        -4px -4px 8px var(--neo-shadow-light),
        0 0 0 3px var(--neo-light),
        0 0 20px rgba(255, 107, 53, 0.4);
}

.content-block {
    transition: all 0.3s ease-out;
    cursor: pointer;
}

.content-block:hover {
    box-shadow: 
        6px 6px 12px var(--neo-shadow-dark),
        -4px -4px 8px var(--neo-shadow-light),
        0 0 15px rgba(255, 107, 53, 0.2);
}

.golden-section {
    transition: all 0.3s ease-out;
    cursor: pointer;
}

.golden-section:hover {
    filter: brightness(1.05);
    transform: scale(1.01);
}

.contrast-example {
    transition: all 0.3s ease-out;
}

.contrast-example:hover {
    transform: scale(1.02);
}

.contrast-meter {
    transition: all 0.3s ease-out;
}

.contrast-meter:hover {
    transform: scale(1.1);
}

.principle-item:hover {
    transform: scale(1.05);
    box-shadow: 
        8px 8px 16px var(--neo-shadow-dark),
        -8px -8px 16px var(--neo-shadow-light);
    color: var(--neo-accent);
}

/* Keyframe Animations */
@keyframes titleFadeIn {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes headerSlideIn {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes contentFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes visualSlideIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes subtitleBounce {
    0% { opacity: 0; transform: translateY(-20px); }
    60% { transform: translateY(5px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes introFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes navigateSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes principleItemPop {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes gridLineGrow {
    from { opacity: 0; transform: scale(0); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes focusPointPulse {
    0% { opacity: 0; transform: scale(0); }
    50% { opacity: 1; transform: scale(1.2); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes columnGrow {
    from { opacity: 0; transform: scaleY(0); }
    to { opacity: 1; transform: scaleY(1); }
}

@keyframes rowGrow {
    from { opacity: 0; transform: scaleX(0); }
    to { opacity: 1; transform: scaleX(1); }
}

@keyframes contentBlockFade {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes sectionSlideLeft {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes sectionSlideRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes spiralRotate {
    from { opacity: 0; transform: rotate(0deg) scale(0); }
    to { opacity: 1; transform: rotate(360deg) scale(1); }
}

@keyframes labelPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes indicatorFadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@keyframes hierarchySlideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes eyeTrackerPop {
    0% { opacity: 0; transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes comparisonSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes clutterFloat {
    0%, 100% { opacity: 0.4; transform: translateY(0) rotate(0deg); }
    50% { opacity: 0.8; transform: translateY(-8px) rotate(5deg); }
}

@keyframes breathingEffect {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.15); }
}

@keyframes alignmentSlideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes guideLineAppear {
    from { opacity: 0; transform: scaleY(0); }
    to { opacity: 0.8; transform: scaleY(1); }
}

@keyframes contrastPop {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes meterFill {
    from { width: 0; }
    to { width: var(--fill-width, 50%); }
}

@keyframes summaryColumnSlide {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes underlineGrow {
    from { width: 0; }
    to { width: 60px; }
}

@keyframes summaryItemSlide {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes finalMessageSlide {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes floatingShapes {
    0%, 100% { opacity: 0.4; transform: translateY(0) rotate(0deg); }
    50% { opacity: 0.8; transform: translateY(-12px) rotate(180deg); }
}

@keyframes keyPointsPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

@keyframes textSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .slide {
        width: 95%;
        height: 85vh;
        padding: 25px;
    }
    
    .content {
        flex-direction: column;
        gap: 20px;
    }
    
    .demo-box {
        width: 250px;
        height: 150px;
    }
    
    .principles-grid {
        grid-template-columns: 1fr;
    }
    
    .summary-columns {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .whitespace-demo, 
    .alignment-demo, 
    .contrast-demo {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    h1 {
        font-size: 2em;
    }
    
    h2 {
        font-size: 1.5em;
    }
    
    .navigation {
        gap: 15px;
    }
    
    .nav-btn {
        padding: 12px 20px;
        font-size: 14px;
    }
}