:root {
    /* Color Palette - Light Theme with High Contrast */
    --color-primary: hsl(240, 85%, 55%);
    --color-primary-hover: hsl(240, 85%, 48%);
    --color-secondary: hsl(280, 75%, 50%);
    --color-background: hsl(0, 0%, 98%);
    --color-surface: hsl(0, 0%, 100%);
    --color-surface-light: hsl(210, 40%, 98%);
    --color-text: hsl(220, 30%, 15%);
    --color-text-muted: hsl(220, 15%, 40%);
    --color-border: hsl(220, 15%, 85%);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, hsl(240, 85%, 55%) 0%, hsl(280, 75%, 50%) 100%);
    --gradient-hero: linear-gradient(180deg, hsl(240, 60%, 98%) 0%, hsl(260, 55%, 96%) 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.25);

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.logo-icon {
    font-size: 1.75rem;
}

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

.nav-link {
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-xs);
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-base);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.625rem 1.25rem;
    font-weight: 600;
    font-size: var(--font-size-sm);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(109, 98, 255, 0.5);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-surface-light);
    border-color: var(--color-primary);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-outline:hover {
    background: var(--color-surface);
    border-color: var(--color-primary);
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: var(--font-size-base);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.12), transparent 70%);
}

.hero-content {
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

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

.hero-subtitle {
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-3xl);
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

/* Sections */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Glass Card */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-slow);
}

.glass-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-xl);
}

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

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

.feature-card {
    text-align: center;
}

.feature-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.feature-list {
    list-style: none;
    text-align: left;
}

.feature-list li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-muted);
    position: relative;
    padding-left: 1.5rem;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* Workflow Section */
.workflow {
    background: linear-gradient(180deg, var(--color-background), var(--color-surface-light));
}

.workflow-steps {
    display: grid;
    gap: var(--spacing-xl);
}

.workflow-step {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    border: 2px solid rgba(109, 98, 255, 0.3);
    border-radius: var(--radius-xl);
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.step-description {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

/* Code Block */
.code-block {
    position: relative;
    background: hsl(220, 25%, 96%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    overflow-x: auto;
}

.copy-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: var(--spacing-xs);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
    opacity: 0;
}

.code-block:hover .copy-btn {
    opacity: 1;
}

.copy-btn:hover {
    background: var(--color-surface-light);
    color: var(--color-primary);
}

/* Collapsible Code Block */
.collapsible-code {
    margin-top: var(--spacing-md);
}

.collapsible-code summary {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: var(--spacing-sm);
    background: hsl(220, 25%, 96%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    list-style: none;
}

.collapsible-code summary::-webkit-details-marker {
    display: none;
}

.collapsible-code summary::before {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 6px solid var(--color-text-muted);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    transition: transform var(--transition-fast);
}

.collapsible-code[open] summary::before {
    transform: rotate(90deg);
}

.collapsible-code summary:hover {
    background: hsl(220, 25%, 93%);
    color: var(--color-primary);
}

.collapsible-code[open] summary {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    border-bottom: none;
}

.collapsible-code .code-block {
    margin-top: 0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    border-top: none;
    max-height: 400px;
    overflow-y: auto;
}

.collapsible-code .code-block pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--color-text);
}

/* Collapsible Preview Image */
.collapsible-preview {
    margin-top: var(--spacing-md);
}

.collapsible-preview summary {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: var(--spacing-sm);
    background: hsl(220, 25%, 96%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    list-style: none;
}

.collapsible-preview summary::-webkit-details-marker {
    display: none;
}

.collapsible-preview summary::before {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 6px solid var(--color-text-muted);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    transition: transform var(--transition-fast);
}

.collapsible-preview[open] summary::before {
    transform: rotate(90deg);
}

.collapsible-preview summary:hover {
    background: hsl(220, 25%, 93%);
    color: var(--color-primary);
}

.collapsible-preview[open] summary {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    border-bottom: none;
}

.collapsible-preview .preview-image-container {
    background: hsl(220, 25%, 96%);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
}

.collapsible-preview .preview-image {
    max-width: 66.67%;
    height: auto;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
}

/* Getting Started Section */
.getting-started {
    background: var(--color-background);
}

.getting-started-content {
    max-width: 900px;
    margin: 0 auto;
}

.getting-started-text {
    text-align: center;
}

.install-steps {
    margin: var(--spacing-2xl) 0;
    text-align: left;
}

.install-step {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.install-step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    font-size: var(--font-size-lg);
}

.install-step-content {
    flex: 1;
}

.install-step-content h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

/* Footer */
.footer {
    background: var(--color-surface-light);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    color: var(--color-text-muted);
}

.footer-title {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.animate-fade-in {
    animation: fadeIn 0.8s ease-out;
}

.animate-fade-in-delay-1 {
    animation: fadeIn 0.8s ease-out 0.2s both;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 0.8s ease-out 0.4s both;
}

.animate-fade-in-delay-3 {
    animation: fadeIn 0.8s ease-out 0.6s both;
}

.animate-fade-in-delay-4 {
    animation: fadeIn 0.8s ease-out 0.8s both;
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */

/* Mobile Menu */
.nav-links.mobile-active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-lg);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Tablet */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    section {
        padding: var(--spacing-2xl) 0;
    }

    .hero-content {
        padding: var(--spacing-2xl) 0;
    }

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

    .step-number {
        width: 70px;
        height: 70px;
        font-size: var(--font-size-xl);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    /* Navigation */
    .nav-content {
        height: 60px;
    }

    .logo {
        font-size: var(--font-size-lg);
    }

    .logo-icon {
        font-size: 1.5rem;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    /* Hero */
    .hero {
        min-height: auto;
        padding-top: 60px;
    }

    .hero-content {
        padding: var(--spacing-xl) 0;
    }

    .hero-description {
        font-size: var(--font-size-base);
    }

    .hero-description br {
        display: none;
    }

    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        gap: var(--spacing-lg);
        margin-top: var(--spacing-xl);
    }

    .stat-value {
        font-size: var(--font-size-2xl);
    }

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

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

    .section-description {
        font-size: var(--font-size-base);
    }

    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .glass-card {
        padding: var(--spacing-lg);
    }

    .feature-icon {
        font-size: 3rem;
    }

    .feature-title {
        font-size: var(--font-size-lg);
    }

    /* Workflow */
    .workflow-step {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .step-number {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-xl);
    }

    .step-title {
        font-size: var(--font-size-lg);
    }

    .step-description {
        font-size: var(--font-size-sm);
    }

    /* Code blocks */
    .code-block {
        padding: var(--spacing-sm);
        font-size: 0.8rem;
    }

    .code-block code {
        word-break: break-all;
    }

    .copy-btn {
        opacity: 1;
        background: rgba(255, 255, 255, 0.9);
    }

    /* Getting Started */
    .install-step {
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-lg);
    }

    .install-step-number {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-base);
    }

    .install-step-content h4 {
        font-size: var(--font-size-base);
        overflow-x: auto;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .cta-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    /* Footer */
    .footer {
        padding: var(--spacing-xl) 0 var(--spacing-md);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-bottom {
        font-size: var(--font-size-xs);
    }

    /* Buttons - Touch friendly */
    .btn {
        padding: 0.75rem 1.5rem;
        min-height: 44px;
    }

    .btn-lg {
        padding: 1rem 2rem;
        min-height: 48px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .hero-stats {
        gap: var(--spacing-md);
    }

    .stat {
        min-width: 80px;
    }

    .stat-value {
        font-size: var(--font-size-xl);
    }

    .stat-label {
        font-size: var(--font-size-xs);
    }
}