/* =====================================
   Fusion Seek Landing Page - Advanced Animations
   Enhanced micro-interactions and visual effects
   ===================================== */

/* Page Load Animations */
.main {
    opacity: 0;
    animation: fadeInPage 1s ease-out forwards;
    animation-delay: 0.5s;
}

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

/* Hero Section Animations */
.hero-text {
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInLeft 1s ease-out forwards;
    animation-delay: 0.8s;
}

.hero-visual {
    opacity: 0;
    transform: translateX(50px);
    animation: slideInRight 1s ease-out forwards;
    animation-delay: 1s;
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Feature Cards Advanced Animations */
.feature-card {
    opacity: 0;
    transform: translateY(50px) scale(0.95);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card.in-view {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

/* Card Hover Animations */
.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.feature-card:hover::after {
    left: 100%;
}

/* Icon Pulse Animation */
.card-icon {
    position: relative;
    overflow: visible;
}

.card-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    background: inherit;
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
    transition: all 0.3s ease;
}

.feature-card:hover .card-icon::before {
    animation: iconPulse 1.5s infinite;
}

@keyframes iconPulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.7;
    }
    70% {
        transform: translate(-50%, -50%) scale(1.3);
        opacity: 0;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.3);
        opacity: 0;
    }
}

/* Button Animations */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transition: width 0.3s, height 0.3s;
    transform: translate(-50%, -50%);
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

/* Glass Button Special Effects */
.btn-glass {
    position: relative;
    overflow: hidden;
}

.btn-glass::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    transform: rotate(45deg);
    transition: transform 0.5s;
    pointer-events: none;
}

.btn-glass:hover::after {
    transform: rotate(45deg) translate(50%, 50%);
}

/* Navigation Animations */
.nav-link {
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(26, 115, 232, 0.1), transparent);
    transition: left 0.5s ease;
}

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

/* Section Entrance Animations */
.section-header {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.section-header.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Advantage Items Animations */
.advantage-item {
    opacity: 0;
    transform: scale(0.8) translateY(30px);
    transition: all 0.5s ease;
}

.advantage-item.in-view {
    opacity: 1;
    transform: scale(1) translateY(0);
}

.advantage-item:nth-child(1) { transition-delay: 0.1s; }
.advantage-item:nth-child(2) { transition-delay: 0.2s; }
.advantage-item:nth-child(3) { transition-delay: 0.3s; }
.advantage-item:nth-child(4) { transition-delay: 0.4s; }

/* Advantage Icon Animations */
.advantage-icon {
    position: relative;
}

.advantage-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    border: 2px solid currentColor;
    border-radius: inherit;
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
    transition: all 0.3s ease;
}

.advantage-item:hover .advantage-icon::after {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0.3;
}

/* Modal Animations */
.modal {
    backdrop-filter: blur(0px);
    transition: backdrop-filter 0.3s ease;
}

.modal.active {
    backdrop-filter: blur(8px);
}

.modal-content {
    animation: modalSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.8) translateY(-50px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Modal Content Animations */
.modal-feature-info > * {
    opacity: 0;
    transform: translateY(20px);
    animation: modalContentFadeIn 0.4s ease forwards;
}

.modal-feature-info > *:nth-child(1) { animation-delay: 0.1s; }
.modal-feature-info > *:nth-child(2) { animation-delay: 0.2s; }
.modal-feature-info > *:nth-child(3) { animation-delay: 0.3s; }
.modal-feature-info > *:nth-child(4) { animation-delay: 0.4s; }
.modal-feature-info > *:nth-child(5) { animation-delay: 0.5s; }
.modal-feature-info > *:nth-child(6) { animation-delay: 0.6s; }

@keyframes modalContentFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading Spinner Enhancement */
.loading-spinner {
    position: relative;
}

.loading-spinner::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60%;
    height: 60%;
    border: 2px solid var(--color-primary-light);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: spin 2s linear infinite reverse;
}

/* Scroll Indicators */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-gray-200);
    z-index: var(--z-fixed);
}

.scroll-progress {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.1s ease;
}

/* Hero Showcase Window Animations */
.showcase-window {
    animation: showcaseFloat 6s ease-in-out infinite;
}

@keyframes showcaseFloat {
    0%, 100% {
        transform: rotateY(-5deg) rotateX(5deg) translateY(0px);
    }
    50% {
        transform: rotateY(-5deg) rotateX(5deg) translateY(-10px);
    }
}

.demo-chart {
    position: relative;
    overflow: hidden;
}

.demo-chart::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: chartShimmer 3s infinite;
}

@keyframes chartShimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* Footer Animations */
.footer {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.footer.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Stats Counter Animation */
.stat-number {
    overflow: hidden;
    position: relative;
}

.stat-number.counting::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-accent);
    animation: countingIndicator 2s ease-out;
}

@keyframes countingIndicator {
    from {
        width: 0%;
    }
    to {
        width: 100%;
    }
}

/* Text Typing Effect */
.typing-effect {
    overflow: hidden;
    border-right: 3px solid var(--color-primary);
    white-space: nowrap;
    margin: 0 auto;
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink-caret {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: var(--color-primary);
    }
}

/* Particle Effects */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: particleFloat 8s linear infinite;
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) translateX(0px) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-10vh) translateX(100px) rotate(360deg);
        opacity: 0;
    }
}

/* Enhanced Modal Styles */
.feature-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-gray-200);
}

.feature-meta {
    flex: 1;
}

.feature-meta h4 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-xl);
}

.version-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--color-success);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
}

.feature-requirements,
.feature-highlights,
.installation-steps,
.ai-models {
    margin-bottom: var(--space-6);
}

.feature-requirements h5,
.feature-highlights h5,
.installation-steps h5,
.ai-models h5 {
    margin-bottom: var(--space-3);
    color: var(--color-gray-800);
    font-size: var(--text-lg);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.highlight-item:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
}

.highlight-item .material-icons {
    color: var(--color-primary);
    font-size: 20px;
}

.models-list {
    display: grid;
    gap: var(--space-3);
}

.model-item {
    padding: var(--space-3);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

.download-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-gray-200);
}

/* Launch and Error Modal Styles */
.launch-info,
.error-info {
    text-align: center;
    padding: var(--space-6);
}

.launch-icon,
.error-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-4);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-4xl);
}

.launch-icon {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.error-icon {
    background: var(--color-error);
    color: var(--color-white);
}

.launch-actions,
.error-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-top: var(--space-6);
}

.launch-help {
    margin-top: var(--space-4);
    color: var(--color-gray-600);
}

.error-solutions {
    text-align: left;
    margin: var(--space-6) 0;
    padding: var(--space-4);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
}

.error-solutions ul {
    margin: var(--space-3) 0 0 var(--space-4);
}

.error-solutions li {
    margin-bottom: var(--space-2);
    color: var(--color-gray-700);
}

/* Button State Animations */
.btn.success {
    background: var(--color-success) !important;
    color: var(--color-white) !important;
    animation: successPulse 0.6s ease;
}

.btn.error {
    background: var(--color-error) !important;
    color: var(--color-white) !important;
    animation: errorShake 0.6s ease;
}

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

@keyframes errorShake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .highlights-grid {
        grid-template-columns: 1fr;
    }
    
    .download-actions,
    .launch-actions,
    .error-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .modal-content {
        margin: var(--space-4);
        max-height: calc(100vh - var(--space-8));
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .hero-text,
    .hero-visual,
    .feature-card,
    .advantage-item,
    .section-header,
    .footer {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
    
    .showcase-window {
        animation: none !important;
    }
    
    .particles {
        display: none;
    }
}

/* High Contrast Mode Enhancements */
@media (prefers-contrast: high) {
    .highlight-item {
        border: 1px solid var(--color-gray-400);
    }
    
    .model-item {
        border-left-width: 6px;
    }
    
    .version-badge {
        border: 2px solid var(--color-white);
    }
}