/* Apple-Inspired Design System */
:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #64748b;
    --accent: #06b6d4;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --background: #ffffff;
    --background-secondary: #f8fafc;
    --background-tertiary: #f1f5f9;
    --surface: #ffffff;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
    --transition: all 0.2s ease;
    --radius: 8px;
    --radius-lg: 12px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    font-size: 16px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Header & Navigation */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}


.nav {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.nav-logo h1 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: -0.01em;
}

.nav-tagline {
    color: var(--text-tertiary);
    font-size: 0.6875rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-top: 1px;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: var(--transition);
    position: relative;
}

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

.nav-link.active {
    color: var(--text-primary);
    font-weight: 590;
}

.nav-cta {
    background: var(--primary);
    color: var(--background) !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: var(--transition);
    border: none;
}

.nav-cta:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: var(--background);
    padding: 8rem 0 6rem;
    margin-top: 80px;
    text-align: center;
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(4rem, 8vw, 7rem);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    color: var(--text-secondary);
    line-height: 1.6;
    font-weight: 400;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: var(--spacing-2xl);
    position: relative;
    height: 400px;
    width: 100%;
    overflow: hidden;
}

.network-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.8;
}

.hero-device {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-illustration {
    width: 100%;
    max-width: 600px;
    height: auto;
}

.float-element {
    animation: float-gentle 4s ease-in-out infinite;
}

@keyframes float-gentle {
    0%, 100% { 
        transform: translateY(0px) scale(1); 
        opacity: 0.4;
    }
    50% { 
        transform: translateY(-8px) scale(1.05); 
        opacity: 0.8;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition);
    border: none;
    cursor: pointer;
    min-height: 44px;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: var(--background);
    border: none;
    font-weight: 500;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
    font-weight: 500;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--background-secondary);
    border-color: var(--text-tertiary);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

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

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 3.5vw, 2.5rem);
    font-weight: 590;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.003em;
    line-height: 1.0877;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.381;
    letter-spacing: -0.01em;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--background-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--border);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--surface);
}

.feature-title {
    color: var(--text-primary);
    font-size: 1.3125rem;
    font-weight: 590;
    margin-bottom: var(--spacing-sm);
    line-height: 1.19;
    letter-spacing: -0.01em;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.47059;
    font-size: 1.0625rem;
    letter-spacing: -0.01em;
}

/* About Section */
.about {
    padding: 5rem 0;
    background: var(--background);
}

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

.about-description {
    font-size: 1.125rem;
    color: var(--blue-gray);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--blue-gray);
    font-weight: 600;
}

.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-placeholder {
    background: var(--white);
    color: var(--primary);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border);
}

.visual-icon {
    margin-bottom: 1rem;
    opacity: 0.8;
}

.visual-placeholder p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0.5rem 0;
}

/* CTA Section */
.cta {
    background: var(--text-primary);
    color: var(--background);
    padding: 4rem 0;
    text-align: center;
}

.cta-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 590;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.003em;
    line-height: 1.0877;
}

.cta-subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.8;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.381;
    letter-spacing: -0.01em;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: var(--background);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-heading {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-description,
.footer-text {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
    line-height: 1.6;
    font-size: 0.875rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.875rem;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

/* Legal Pages */
.legal-page {
    margin-top: 50px;
    padding: 4rem 0;
    min-height: calc(100vh - 50px);
}

.legal-header {
    text-align: center;
    margin-bottom: 3rem;
}

.legal-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-blue);
    margin-bottom: 0.5rem;
}

.legal-updated {
    color: var(--blue-gray);
    font-style: italic;
}

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

.legal-section {
    margin-bottom: 2rem;
}

.legal-section h2 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.legal-section h3 {
    color: var(--dark-blue);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
}

.legal-section p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

.legal-section ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.legal-section li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.legal-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
}

.legal-link:hover {
    text-decoration: underline;
}

.legal-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    gap: 1rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: var(--spacing-md);
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .hero-visual {
        height: 300px;
        margin-top: var(--spacing-lg);
    }
    
    .network-background {
        height: 100%;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(
            180deg,
            rgba(255, 255, 255, 0.02) 0%,
            rgba(255, 255, 255, 0.01) 100%
        );
        backdrop-filter: saturate(200%) blur(40px) brightness(1.15);
        -webkit-backdrop-filter: saturate(200%) blur(40px) brightness(1.15);
        box-shadow: 
            0 1px 0 0 rgba(255, 255, 255, 0.1) inset,
            0 0 30px rgba(255, 255, 255, 0.3),
            0 10px 60px rgba(0, 0, 0, 0.08);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-lg);
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .btn {
        width: 200px;
        justify-content: center;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .legal-nav {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: clamp(2.5rem, 8vw, 4rem);
    }
    
    .hero {
        min-height: 70vh;
        padding: 6rem 0 4rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
    }
}