/* Scroll Animations Page Styles */

.intro-demo {
    padding: 4rem 2rem;
    overflow: hidden;
}

.scroll-demo-box {
    padding: 3rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    color: white;
    text-align: center;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.scroll-demo-box h3 {
    margin: 0 0 1rem 0;
    font-size: 2rem;
}

.scroll-demo-box p {
    margin: 0;
    font-size: 1.125rem;
    opacity: 0.9;
}

/* Fade-in on scroll animation */
.fade-in-scroll {
    opacity: 0;
    transform: translateY(50px);
    animation: fade-in-up linear forwards;
    animation-timeline: view();
    animation-range: entry 0% cover 30%;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fallback for browsers without scroll-driven animations */
@supports not (animation-timeline: view()) {
    .fade-in-scroll {
        animation: none;
        opacity: 1;
        transform: translateY(0);
    }
}

/* Progress Indicator Demo */
.progress-demo {
    padding: 3rem 2rem;
    position: relative;
}

.progress-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.dark .progress-container {
    background: rgba(255, 255, 255, 0.1);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(to right, #2563eb, #7c3aed);
    transform-origin: left;
    transform: scaleX(0);
    animation: scroll-progress linear;
    animation-timeline: scroll(root);
}

@keyframes scroll-progress {
    from {
        transform: scaleX(0);
    }
    to {
        transform: scaleX(1);
    }
}

/* Fallback for browsers without scroll-driven animations */
@supports not (animation-timeline: scroll()) {
    .progress-bar {
        animation: none;
        transform: scaleX(0);
    }
}

.progress-content {
    max-width: 800px;
    margin: 0 auto;
}

.progress-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.progress-content p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.125rem;
}

/* Reveal Cards Demo */
.reveal-demo {
    padding: 3rem 2rem;
}

.reveal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.reveal-card {
    padding: 2rem;
    background: var(--color-surface, #f8fafc);
    border: 2px solid var(--color-border, #e2e8f0);
    border-radius: 12px;
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    animation: reveal-card linear forwards;
    animation-timeline: view();
    animation-range: entry 0% cover 25%;
}

.dark .reveal-card {
    background: #1e293b;
    border-color: #334155;
}

@keyframes reveal-card {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Fallback for browsers without scroll-driven animations */
@supports not (animation-timeline: view()) {
    .reveal-card {
        animation: none;
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.reveal-card h3 {
    margin: 0 0 1rem 0;
    font-size: 1.25rem;
    color: var(--color-text, #1e293b);
}

.reveal-card p {
    margin: 0;
    color: var(--color-text-secondary, #64748b);
    line-height: 1.6;
}

/* Stagger the animations for multiple cards */
.reveal-card:nth-child(1) {
    animation-delay: 0ms;
}

.reveal-card:nth-child(2) {
    animation-delay: 100ms;
}

.reveal-card:nth-child(3) {
    animation-delay: 200ms;
}

/* Timeline Demo */
.timeline-demo {
    padding: 3rem 2rem;
}

.timeline-description {
    max-width: 800px;
    margin: 0 auto 3rem;
}

.timeline-description h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.timeline-description p {
    line-height: 1.8;
    color: var(--color-text-secondary, #64748b);
}

.timeline-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.timeline-value {
    padding: 1.5rem;
    background: var(--color-surface, #f8fafc);
    border: 2px solid var(--color-border, #e2e8f0);
    border-radius: 8px;
    text-align: center;
}

.dark .timeline-value {
    background: #1e293b;
    border-color: #334155;
}

.timeline-value code {
    display: block;
    font-family: 'Space Mono', monospace;
    font-size: 0.875rem;
    color: var(--color-primary, #2563eb);
    margin-bottom: 0.5rem;
}

.timeline-value p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--color-text-secondary, #64748b);
    line-height: 1.5;
}

/* Range Demo */
.range-demo {
    padding: 3rem 2rem;
}

.range-description {
    max-width: 800px;
    margin: 0 auto 3rem;
}

.range-description h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.range-description p {
    line-height: 1.8;
    color: var(--color-text-secondary, #64748b);
}

.range-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.range-example {
    padding: 2rem;
    background: var(--color-surface, #f8fafc);
    border: 2px solid var(--color-border, #e2e8f0);
    border-radius: 12px;
}

.dark .range-example {
    background: #1e293b;
    border-color: #334155;
}

.range-example h4 {
    margin: 0 0 1rem 0;
    font-size: 1.125rem;
    color: var(--color-text, #1e293b);
}

.dark .range-example h4 {
    color: #f1f5f9;
}

.range-example code {
    display: block;
    font-family: 'Space Mono', monospace;
    font-size: 0.875rem;
    color: var(--color-primary, #2563eb);
    background: rgba(37, 99, 235, 0.05);
    padding: 0.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.range-example p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--color-text-secondary, #64748b);
    line-height: 1.6;
}

/* Browser Support Info */
.info-box {
    margin-top: 2rem;
    padding: 2rem;
    background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
    border-left: 4px solid #2563eb;
    border-radius: 8px;
}

.dark .info-box {
    background: linear-gradient(135deg, #1e3a8a 0%, #312e81 100%);
    border-left-color: #60a5fa;
}

.info-box h4 {
    margin: 0 0 1rem 0;
    font-size: 1.125rem;
}

.info-box ul {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.info-box li {
    margin: 0.5rem 0;
    line-height: 1.6;
}

.info-box code {
    font-family: 'Space Mono', monospace;
    font-size: 0.875rem;
    background: rgba(0, 0, 0, 0.1);
    padding: 0.125rem 0.375rem;
    border-radius: 3px;
}

.dark .info-box code {
    background: rgba(255, 255, 255, 0.1);
}

/* Related Links */
.related-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.related-card {
    padding: 2rem;
    background: var(--color-surface, #f8fafc);
    border: 2px solid var(--color-border, #e2e8f0);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.dark .related-card {
    background: #1e293b;
    border-color: #334155;
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    border-color: #2563eb;
}

.related-card h3 {
    margin: 0 0 0.75rem 0;
    color: var(--color-text, #1e293b);
    font-size: 1.25rem;
}

.dark .related-card h3 {
    color: #f1f5f9;
}

.related-card p {
    margin: 0;
    color: var(--color-text-secondary, #64748b);
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 768px) {
    .scroll-demo-box h3 {
        font-size: 1.5rem;
    }

    .scroll-demo-box p {
        font-size: 1rem;
    }

    .reveal-grid {
        grid-template-columns: 1fr;
    }

    .timeline-values {
        grid-template-columns: 1fr;
    }

    .range-examples {
        grid-template-columns: 1fr;
    }

    .related-links {
        grid-template-columns: 1fr;
    }

    .progress-content p {
        font-size: 1rem;
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .fade-in-scroll,
    .reveal-card,
    .progress-bar {
        animation: none !important;
        opacity: 1;
        transform: none;
    }
}