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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-alt: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    display: inline-block;
    margin-right: 12px;
}

.version {
    font-size: 14px;
    color: var(--text-secondary);
    background: var(--bg-alt);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

.nav {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
    position: relative;
}

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

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

.nav a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

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

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 32px;
    opacity: 0.95;
    line-height: 1.6;
}

.hero-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.badge {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-alt {
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 48px;
    text-align: center;
    color: var(--text-primary);
}

.section-intro {
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Overview Grid */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.overview-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.overview-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.overview-card p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.7;
}

.overview-card a {
    color: var(--primary-color);
    text-decoration: none;
}

.overview-card a:hover {
    text-decoration: underline;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-card ul {
    list-style: none;
    padding: 0;
}

.feature-card li {
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
    line-height: 1.6;
}

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

/* Permissions List */
.permissions-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.permission-item {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-color);
}

.permission-item h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.permission-item p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.7;
}

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

.permission-item ul {
    margin-top: 12px;
    padding-left: 24px;
    color: var(--text-secondary);
}

.permission-item code {
    background: var(--bg-alt);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 14px;
    font-family: 'Monaco', 'Courier New', monospace;
}

/* Privacy Grid */
.privacy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.privacy-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.privacy-card h3 {
    font-size: 22px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.privacy-card ul {
    list-style: none;
    padding: 0;
}

.privacy-card li {
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
    line-height: 1.6;
}

.privacy-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 20px;
}

.privacy-card code {
    background: var(--bg-alt);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 14px;
    font-family: 'Monaco', 'Courier New', monospace;
}

.privacy-link {
    text-align: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Technical Grid */
.technical-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.technical-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.technical-card h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.technical-card ul {
    list-style: none;
    padding: 0;
}

.technical-card li {
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
    line-height: 1.6;
}

.technical-card li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.technical-card p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.7;
}

/* Info Table */
.info-table {
    width: 100%;
    border-collapse: collapse;
}

.info-table td {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.info-table td:first-child {
    width: 40%;
    color: var(--text-primary);
    font-weight: 500;
}

/* Code Blocks */
.code-block {
    display: block;
    background: var(--bg-alt);
    padding: 16px;
    border-radius: var(--radius-sm);
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    overflow-x: auto;
    margin: 12px 0;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    line-height: 1.6;
}

code {
    font-family: 'Monaco', 'Courier New', monospace;
}

pre.code-block {
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Support Grid */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.support-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.support-card h3 {
    font-size: 22px;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.support-card ul {
    list-style: none;
    padding: 0;
}

.support-card li {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.6;
}

.support-card a {
    color: var(--primary-color);
    text-decoration: none;
}

.support-card a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 48px 0;
    text-align: center;
}

.footer p {
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.8);
}

.footer strong {
    color: white;
}

.footer-links {
    margin: 16px 0;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-links span {
    margin: 0 12px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-note {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 24px;
}

/* Hero CTA */
.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 32px;
    flex-wrap: wrap;
}

.btn-hero {
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
}

.btn-hero-secondary {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-install {
    background: var(--primary-color);
    color: white !important;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
}

.btn-install:hover {
    background: var(--primary-dark);
}

/* Benefit Icons */
.benefit-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

/* Pricing Section */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px 32px;
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
}

.pricing-header h3 {
    font-size: 28px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.pricing-price {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.price {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
}

.period {
    font-size: 16px;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 16px;
}

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

.btn-pricing {
    width: 100%;
    text-align: center;
    display: block;
}

/* Steps Section */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.step-card {
    text-align: center;
    padding: 32px;
}

.step-number {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    margin: 0 auto 24px;
}

.step-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.step-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Install CTA */
.install-cta {
    text-align: center;
    padding: 64px 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius);
    color: white;
}

.install-cta h2 {
    font-size: 36px;
    margin-bottom: 16px;
    color: white;
}

.install-cta > p {
    font-size: 20px;
    margin-bottom: 32px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.cta-note {
    font-size: 14px;
    opacity: 0.8;
    margin-top: 24px;
}

/* FAQ Section */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-primary);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.faq-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Footer Updates */
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 48px;
    text-align: left;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 16px;
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section li {
    margin-bottom: 8px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 32px;
    text-align: center;
}

.footer-copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 16px;
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.testimonial-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.testimonial-stars {
    font-size: 20px;
    margin-bottom: 16px;
}

.testimonial-text {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .section-title {
        font-size: 28px;
    }

    .nav {
        gap: 16px;
        font-size: 13px;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .overview-grid,
    .features-grid,
    .privacy-grid,
    .technical-grid,
    .support-grid,
    .pricing-grid,
    .steps-grid,
    .faq-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

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

    .install-cta {
        padding: 48px 24px;
    }

    .install-cta h2 {
        font-size: 28px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .section {
        padding: 48px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 48px 0;
    }

    .hero-title {
        font-size: 28px;
    }

    .overview-card,
    .feature-card,
    .permission-item,
    .privacy-card,
    .technical-card,
    .support-card {
        padding: 24px;
    }
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background: var(--primary-color);
    color: white;
}