scroll-stack.css

/* Reset and base styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    overflow-x: hidden;
}

/* Hero Section */
.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-content {
    max-width: 800px;
    padding: 0 2rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    opacity: 0.9;
    margin-bottom: 3rem;
    line-height: 1.6;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.8;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Scroll Stack Styles */
.scroll-stack-scroller {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow-y: auto;
    overflow-x: visible;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: scroll-position;
    background: linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%);
}

.scroll-stack-inner {
    padding: 15vh 2rem 30rem;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
}

.scroll-stack-card {
    transform-origin: top center;
    will-change: transform, filter;
    backface-visibility: hidden;
    transform-style: preserve-3d;
    height: auto;
    min-height: 450px;
    width: 100%;
    margin: 50px 0;
    border-radius: 24px;
    box-sizing: border-box;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

/* Feature Card Styles */
.feature-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 
        0 20px 25px -5px rgba(0, 0, 0, 0.1),
        0 10px 10px -5px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    padding: 3rem;
    display: flex;
    align-items: center;
    gap: 2.5rem;
    position: relative;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 24px 24px 0 0;
}

.feature-icon {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.feature-content {
    flex: 1;
}

.feature-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.feature-description {
    font-size: 1.1rem;
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.feature-benefits {
    list-style: none;
    padding: 0;
}

.feature-benefits li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: #2d3748;
    font-weight: 500;
}

.feature-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

/* Card-specific styling */
.feature-card[data-feature="analytics"] .feature-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.feature-card[data-feature="audience"] .feature-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.feature-card[data-feature="scheduling"] .feature-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.feature-card[data-feature="collaboration"] .feature-icon {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.feature-card[data-feature="content"] .feature-icon {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.feature-card[data-feature="assets"] .feature-icon {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.feature-card[data-feature="monetization"] .feature-icon {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
}

.feature-card[data-feature="engagement"] .feature-icon {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
}

.scroll-stack-end {
    width: 100%;
    height: 1px;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.cta-content p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.cta-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .scroll-stack-inner {
        padding: 15vh 1.5rem 30rem;
    }
    
    .feature-card {
        flex-direction: column;
        text-align: center;
        padding: 2.5rem;
        gap: 2rem;
        min-height: 400px;
    }
    
    .feature-icon {
        width: 100px;
        height: 100px;
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .scroll-stack-inner {
        padding: 10vh 1rem 25rem;
    }
    
    .feature-card {
        padding: 2rem;
        margin: 30px 0;
        border-radius: 16px;
        min-height: 350px;
    }
    
    .feature-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
        border-radius: 16px;
    }
    
    .feature-title {
        font-size: 1.6rem;
    }
    
    .feature-description {
        font-size: 1rem;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .cta-content p {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .feature-card {
        padding: 1.5rem;
        gap: 1.5rem;
        min-height: 300px;
    }
    
    .feature-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
        border-radius: 12px;
    }
    
    .feature-title {
        font-size: 1.4rem;
    }
    
    .feature-benefits li {
        font-size: 0.9rem;
    }
}

/* Performance optimizations */
.feature-card {
    contain: layout style paint;
}

.feature-icon {
    contain: layout style paint;
}