/* Root Variables */
:root {
    /* Light theme colors */
    --color-primary-bg: #ffffff;
    --color-secondary-bg: #f5f5f5;
    --color-tertiary-bg: #e8e8e8;
    --color-text-primary: #2a2a2a;
    --color-text-secondary: #666666;
    --color-border: #e0e0e0;
    --color-premium-black: #000000;
    --color-dark-section: #1a1a1a;
    --color-accent: #4a9eff;
    
    --font-system: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", monospace;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-system);
    background-color: var(--color-primary-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-premium-black);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-premium-black);
    font-weight: 600;
    line-height: 1.2;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    padding: var(--spacing-md) 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

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

.nav-brand a {
    display: flex;
    align-items: center;
}

.logo {
    height: 60px;
    width: auto;
    display: block;
    transform: scale(4);
    transform-origin: left center;
    margin-left: 20px;
    margin-right: 80px;
}

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

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    font-size: 1.05rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition);
    color: var(--color-text-primary);
    font-weight: 500;
}

.nav-links a:hover {
    background: var(--color-secondary-bg);
    color: var(--color-premium-black);
}

/* Hero Section */
.hero {
    padding-top: 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--color-secondary-bg);
}

.hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    height: auto;
    justify-content: center;
    padding: var(--spacing-lg) 0;
}

.product-title-container {
    width: 100%;
    text-align: center;
    margin-bottom: 3rem;
    margin-top: 0rem;
    padding-top: 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    width: 100%;
    max-width: 1200px;
    flex: 0;
    align-content: center;
    margin-top: 0;
    margin-bottom: 0;
}

.hero-content {
    text-align: left;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
    text-align: left;
    line-height: 1.2;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--color-premium-black), var(--color-text-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.product-name {
    font-size: 5.5rem;
    font-weight: 800;
    text-align: center;
    margin: 0;
    color: var(--color-premium-black);
    letter-spacing: -3px;
    animation: fadeInUp 0.6s ease;
    line-height: 0.9;
    display: inline-block;
    font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(180deg, #000000 0%, #333333 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    animation: fadeInUp 0.8s ease 0.1s backwards;
    text-align: left;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.2s backwards;
    justify-content: flex-start;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: var(--color-premium-black);
    color: var(--color-primary-bg);
    border-color: var(--color-premium-black);
}

.btn-primary:hover {
    background: transparent;
    color: var(--color-premium-black);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-secondary-bg);
    border-color: var(--color-text-primary);
    transform: translateY(-2px);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.3s backwards;
    justify-content: flex-start;
    margin-bottom: 0;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-premium-black);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* Extension Preview */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 0;
}

.extension-preview {
    animation: fadeIn 1s ease 0.4s backwards;
    width: 100%;
    max-width: 700px;
}

.preview-window {
    background: rgba(7, 7, 7, 0.9);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(0, 0, 0, 0.2);
}

.preview-header {
    display: flex;
    gap: 8px;
    margin-bottom: var(--spacing-md);
    padding: 0 4px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff5f56;
}

.dot:nth-child(2) {
    background: #ffbd2e;
}

.dot:nth-child(3) {
    background: #27c93f;
}

.preview-content {
    background: var(--color-primary-bg);
    border-radius: calc(var(--border-radius) / 2);
    padding: var(--spacing-lg);
    min-height: 200px;
    display: flex;
    align-items: center;
}

.typing-demo {
    font-family: var(--font-mono);
    font-size: 1.4rem;
}

.typed-text {
    color: var(--color-premium-black);
}

.suggestion {
    color: var(--color-text-secondary);
    opacity: 0.7;
}

.cursor {
    display: inline-block;
    width: 2px;
    height: 1.4em;
    background: var(--color-accent);
    animation: blink 1s infinite;
    margin-left: 2px;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Sections */
section {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* Features Section */
.features {
    background: var(--color-primary-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--color-secondary-bg);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-text-primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    background: var(--color-primary-bg);
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-accent);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    opacity: 0.8;
    line-height: 1.8;
}

/* AI Models Section */
.ai-models {
    background: var(--color-dark-section);
    color: var(--color-primary-bg);
    padding: var(--spacing-xxl) 0;
}

.ai-models .section-title {
    color: var(--color-primary-bg);
}

.ai-models .section-subtitle {
    color: #b0b0b0;
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.model-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.model-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.model-card.featured {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.model-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-bg);
    border-radius: 12px;
    position: relative;
}

.model-text-logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-premium-black);
    letter-spacing: -1px;
}

.model-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}

.model-card h3 {
    color: var(--color-primary-bg);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.model-card p {
    color: #b0b0b0;
    line-height: 1.6;
    font-size: 0.95rem;
}

.models-note {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.models-note p {
    color: var(--color-primary-bg);
    font-size: 1.1rem;
    margin: 0;
}

/* How It Works */
.steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xxl);
}

.step {
    flex: 1;
    text-align: center;
    padding: var(--spacing-lg);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--color-premium-black);
    color: var(--color-primary-bg);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.step-arrow {
    font-size: 2rem;
    color: var(--color-text-secondary);
}

.step h3 {
    margin-bottom: var(--spacing-sm);
}

/* Keyboard Shortcuts */
.keyboard-shortcuts {
    background: var(--color-secondary-bg);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.keyboard-shortcuts h3 {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.shortcut {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
}

kbd {
    background: var(--color-premium-black);
    border: 1px solid var(--color-text-primary);
    border-radius: 4px;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-primary-bg);
    box-shadow: 0 2px 0 var(--color-text-secondary);
}

/* Demo Section */
.demo {
    background: var(--color-secondary-bg);
}

.demo-placeholder {
    background: var(--color-primary-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
}

.video-placeholder {
    text-align: center;
    color: var(--color-text-secondary);
}

.video-placeholder svg {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-md);
}

/* Pricing Section */
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--color-secondary-bg);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    text-align: center;
    position: relative;
    border: 2px solid var(--color-border);
    transition: var(--transition);
}

.pricing-card.featured {
    background: var(--color-premium-black);
    border-color: var(--color-premium-black);
    transform: scale(1.05);
    color: var(--color-primary-bg);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary-bg);
    color: var(--color-premium-black);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 2px solid var(--color-premium-black);
}

.pricing-card h3 {
    margin-bottom: var(--spacing-md);
}

.pricing-card.featured h3 {
    color: var(--color-primary-bg);
}

.price {
    margin-bottom: var(--spacing-lg);
}

.amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-premium-black);
}

.pricing-card.featured .amount {
    color: var(--color-primary-bg);
}

.period {
    opacity: 0.7;
}

.features-list {
    list-style: none;
    margin-bottom: var(--spacing-xl);
    text-align: left;
}

.features-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.pricing-card.featured .features-list li {
    border-bottom-color: rgba(255, 255, 255, 0.2);
    color: var(--color-primary-bg);
}

.features-list li:last-child {
    border-bottom: none;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--color-premium-black), var(--color-text-primary));
    text-align: center;
    padding: var(--spacing-xxl) 0;
    color: var(--color-primary-bg);
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary-bg);
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--color-dark-section);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    border-top: 1px solid var(--color-text-primary);
    color: #e0e0e0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    height: 60px;
    margin-bottom: var(--spacing-md);
    transform: scale(4);
    transform-origin: left center;
}

.footer-section h4 {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary-bg);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: #e0e0e0;
}

.footer-section a:hover {
    color: var(--color-primary-bg);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    opacity: 0.7;
    color: #b0b0b0;
}

.compliance-note {
    margin-top: var(--spacing-sm);
    font-size: 0.85rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .hero {
        padding-top: 80px;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
        text-align: center;
    }
    
    .hero-subtitle {
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .extension-preview {
        max-width: 600px;
        margin: 0 auto;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar .container {
        justify-content: center;
    }
    
    .nav-brand {
        width: 100%;
        justify-content: center;
    }
    
    .logo {
        transform: scale(3.5);
        transform-origin: center center;
        margin-left: 0;
        margin-right: 0;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .shortcuts-grid {
        grid-template-columns: 1fr;
    }
    
    .models-grid {
        grid-template-columns: 1fr;
    }
    
    .model-card {
        padding: var(--spacing-lg);
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-logo {
        transform: scale(3.5);
        transform-origin: center center;
        margin-left: auto;
        margin-right: auto;
        display: block;
    }
}