:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #0f0f0f;
    --bg-card: #151515;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-blue: #00d4ff;
    --accent-purple: #7c3aed;
    --gradient: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    --border-color: #2a2a2a;
    --max-width: 1200px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary) !important;
}

.nav-brand a:hover,
.nav-brand a:visited,
.nav-brand a:active,
.nav-brand a:focus {
    text-decoration: none;
    color: var(--text-primary) !important;
}

.nav-brand a .brand-name {
    color: inherit;
}

.logo {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-blue);
}

.cta-button {
    background: var(--gradient);
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
    color: white !important;
    font-weight: 500;
    transition: transform 0.2s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.primary-button, .secondary-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.3);
}

.secondary-button {
    background: transparent;
    color: var(--accent-blue);
    border: 2px solid var(--accent-blue);
}

.secondary-button:hover {
    background: var(--accent-blue);
    color: var(--bg-primary);
}

.trust-indicators {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stars {
    color: #fbbf24;
    font-size: 1.25rem;
}

.stat {
    color: var(--text-secondary);
}

.stat strong {
    color: var(--text-primary);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.file-animation {
    position: relative;
    width: 300px;
    height: 300px;
}

.file-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(-50%, -50%) translateY(0); }
    50% { transform: translate(-50%, -50%) translateY(-20px); }
}

.shred-particles {
    position: absolute;
    inset: 0;
}

.shred-particles::before,
.shred-particles::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--accent-blue);
    opacity: 0.6;
    animation: particle 3s linear infinite;
}

.shred-particles::after {
    background: var(--accent-purple);
    animation-delay: 1.5s;
}

@keyframes particle {
    0% {
        transform: translate(150px, 150px) scale(0);
        opacity: 0;
    }
    20% {
        opacity: 0.6;
    }
    100% {
        transform: translate(300px, 0) scale(1);
        opacity: 0;
    }
}

/* Section Styles */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.25rem;
    margin-bottom: 3rem;
}

/* How It Works */
.how-it-works {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 4rem;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    position: absolute;
    top: -10px;
    right: 20%;
    font-size: 3rem;
    font-weight: 700;
    opacity: 0.1;
}

.step-icon {
    margin-bottom: 1.5rem;
}

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

.step p {
    color: var(--text-secondary);
}

/* Features Grid */
.features {
    padding: 80px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
}

.feature-icon {
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Security Showcase */
.security-showcase {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 3rem;
    align-items: center;
    margin-top: 3rem;
}

.comparison-side {
    text-align: center;
}

.comparison-side h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.file-preview {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 1rem;
}

.file-header {
    background: var(--accent-purple);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-weight: 500;
}

.file-body p {
    margin: 0.5rem 0;
}

.chunks-preview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    padding: 2rem;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.chunk {
    background: rgba(124, 58, 237, 0.2);
    border: 1px solid var(--accent-purple);
    padding: 0.75rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.875rem;
    opacity: 0.8;
}

.comparison-caption {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.comparison-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Use Cases */
.use-cases {
    padding: 80px 0;
}

.use-cases-carousel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.use-case-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.use-case-card:hover,
.use-case-card.active {
    border-color: var(--accent-blue);
    transform: translateY(-5px);
}

.use-case-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.use-case-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.use-case-card p {
    color: var(--text-secondary);
}

/* Demo Section */
.demo-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.demo-container {
    max-width: 600px;
    margin: 0 auto;
}

.upload-area {
    background: var(--bg-card);
    border: 2px dashed var(--accent-blue);
    border-radius: 12px;
    padding: 4rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-area:hover {
    border-color: var(--accent-purple);
    background: rgba(124, 58, 237, 0.05);
}

.upload-area p {
    margin: 1rem 0;
    font-size: 1.25rem;
}

.demo-note {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.demo-visualization {
    text-align: center;
    animation: fadeIn 0.5s;
}

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

.demo-visualization h4 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--accent-blue);
}

.chunk-visualization {
    margin: 2rem 0;
}

.chunk-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 0.5rem;
    max-width: 400px;
    margin: 0 auto;
}

.demo-chunk {
    height: 40px;
    background: var(--gradient);
    border-radius: 4px;
    animation: chunkAppear 0.3s ease-out;
    animation-fill-mode: both;
}

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

.demo-stats {
    color: var(--text-secondary);
    margin: 2rem 0;
}

.demo-stats span {
    color: var(--accent-purple);
    font-weight: 600;
}

.reset-demo {
    background: transparent;
    color: var(--accent-blue);
    border: 2px solid var(--accent-blue);
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.reset-demo:hover {
    background: var(--accent-blue);
    color: var(--bg-primary);
}

/* FAQ */
.faq {
    padding: 80px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.faq-item {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.faq-item summary {
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--accent-blue);
    transition: transform 0.3s;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item p {
    margin-top: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-button-large {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: var(--gradient);
    color: white;
    padding: 1.25rem 2.5rem;
    border-radius: 8px;
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
}

.cta-button-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.4);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-tagline {
    color: var(--text-secondary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: var(--accent-blue);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
}

.footer-note {
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-visual {
        display: none;
    }
    
    .steps {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .comparison {
        grid-template-columns: 1fr;
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
    }
    
    .nav-links {
        display: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* Coming Soon Styles */
.coming-soon {
    color: var(--text-secondary);
    font-style: italic;
}

.coming-soon-button {
    background: var(--bg-card) !important;
    border: 2px dashed var(--border-color) !important;
    color: var(--text-secondary) !important;
    cursor: not-allowed !important;
    opacity: 0.7;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.coming-soon-button:hover {
    transform: none !important;
    box-shadow: none !important;
}

/* Video Modal */
.video-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 1200px;
    max-height: 90vh;
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 10;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.modal-close svg {
    color: white;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 80vh;
    }
    
    .modal-close {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
    }
}