/* ===================================
   NyxLabs Landing Page Styles
   Modern, Dark Theme with Privacy Aesthetics
   =================================== */

/* CSS Variables */
:root {
    /* Colors - Dark Theme with Purple/Cyan Accents */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a25;
    --color-surface: rgba(255, 255, 255, 0.03);
    --color-surface-hover: rgba(255, 255, 255, 0.06);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(255, 255, 255, 0.12);
    
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-tertiary: rgba(255, 255, 255, 0.5);
    
    --color-accent-primary: #8b5cf6;
    --color-accent-secondary: #06b6d4;
    --color-accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
    --color-accent-glow: rgba(139, 92, 246, 0.4);
    
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--color-accent-glow);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--color-surface);
    padding: 0.2em 0.5em;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(139, 92, 246, 0.4);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    border-bottom-color: var(--color-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.5rem;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-links a {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4xl) var(--spacing-lg);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(139, 92, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(139, 92, 246, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 40%, transparent 100%);
}

.hero-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.03em;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Hero Visual */
.hero-visual {
    position: absolute;
    right: 10%;
    top: 50%;
    transform: translateY(-50%);
    width: 400px;
    height: 400px;
    display: none;
}

@media (min-width: 1200px) {
    .hero-visual {
        display: block;
    }
    
    .hero-content {
        text-align: left;
        margin-right: auto;
        margin-left: 5%;
    }
    
    .hero-actions {
        justify-content: flex-start;
    }
    
    .hero-stats {
        justify-content: flex-start;
    }
}

.visual-ring {
    position: absolute;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    animation: rotate 30s linear infinite;
}

.ring-1 {
    inset: 0;
    border-color: rgba(139, 92, 246, 0.2);
}

.ring-2 {
    inset: 40px;
    border-color: rgba(6, 182, 212, 0.2);
    animation-direction: reverse;
    animation-duration: 25s;
}

.ring-3 {
    inset: 80px;
    border-color: rgba(139, 92, 246, 0.3);
    animation-duration: 20s;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.visual-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: var(--color-accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    box-shadow: var(--shadow-glow);
    animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 40px var(--color-accent-glow); }
    50% { box-shadow: 0 0 60px var(--color-accent-glow), 0 0 80px rgba(6, 182, 212, 0.3); }
}

/* ===================================
   Section Styles
   =================================== */
section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

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

.feature-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
    border-color: rgba(139, 92, 246, 0.3);
}

@media (max-width: 768px) {
    .feature-card.featured {
        grid-column: span 1;
    }
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-gradient);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.feature-icon svg {
    stroke: white;
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.tag {
    padding: 0.25rem 0.75rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}

/* ===================================
   Architecture Section
   =================================== */
.architecture {
    background: var(--color-bg-primary);
}

.architecture-visual {
    max-width: 900px;
    margin: 0 auto;
}

.arch-layers {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.arch-layer {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.arch-layer:hover {
    border-color: var(--color-accent-primary);
    background: rgba(139, 92, 246, 0.05);
}

.layer-number {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.layer-content h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.layer-content p {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.layer-role {
    padding: 0.375rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--color-accent-secondary);
    font-weight: 500;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .arch-layer {
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
    }
    
    .layer-role {
        grid-column: 2;
        justify-self: start;
    }
}

/* ===================================
   How It Works Section
   =================================== */
.how-it-works {
    background: var(--color-bg-secondary);
}

.flow-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 200px;
    padding: var(--spacing-lg);
}

.flow-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-gradient);
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
}

.flow-content h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.flow-content p {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.flow-connector {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-secondary));
    border-radius: 1px;
}

@media (max-width: 900px) {
    .flow-container {
        flex-direction: column;
    }
    
    .flow-connector {
        width: 2px;
        height: 40px;
        background: linear-gradient(180deg, var(--color-accent-primary), var(--color-accent-secondary));
    }
}

/* ===================================
   Roadmap Section
   =================================== */
.roadmap {
    background: var(--color-bg-primary);
}

.roadmap-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: var(--spacing-3xl);
}

.timeline-line {
    position: absolute;
    left: 11px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-accent-primary), var(--color-accent-secondary));
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-2xl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--spacing-3xl) + 3px);
    width: 18px;
    height: 18px;
    background: var(--color-bg-primary);
    border: 3px solid var(--color-accent-primary);
    border-radius: 50%;
    transition: all var(--transition-base);
}

.timeline-marker.active {
    background: var(--color-accent-primary);
    box-shadow: 0 0 20px var(--color-accent-glow);
}

.timeline-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.timeline-item:hover .timeline-content {
    border-color: var(--color-accent-primary);
}

.timeline-period {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent-secondary);
    margin-bottom: var(--spacing-sm);
}

.timeline-content h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.timeline-content ul {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.timeline-content li {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
}

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

@media (max-width: 600px) {
    .timeline-content ul {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   CTA Section
   =================================== */
.cta-section {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

.cta-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    font-size: 1.125rem;
}

.waitlist-form .form-group {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 500px;
    margin: 0 auto;
}

.waitlist-form input {
    flex: 1;
    padding: 1rem 1.25rem;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.waitlist-form input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.waitlist-form input::placeholder {
    color: var(--color-text-tertiary);
}

.cta-note {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-md);
}

@media (max-width: 500px) {
    .waitlist-form .form-group {
        flex-direction: column;
    }
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--color-bg-secondary);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--color-border);
}

.footer-brand p {
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-md);
    max-width: 280px;
}

.footer-col h5 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-md);
}

.footer-col a {
    display: block;
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-xl);
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-xl);
}

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

@media (max-width: 900px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 600px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-brand {
        grid-column: span 1;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* ===================================
   Mobile Navigation
   =================================== */
@media (max-width: 900px) {
    .nav-links,
    .nav-actions {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }
    
    .nav-actions.active {
        display: flex;
        position: absolute;
        top: calc(100% + 180px);
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-lg);
        justify-content: center;
    }
}

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

.hero-content > * {
    animation: fadeInUp 0.8s ease-out both;
}

.hero-badge { animation-delay: 0.1s; }
.hero-title { animation-delay: 0.2s; }
.hero-description { animation-delay: 0.3s; }
.hero-actions { animation-delay: 0.4s; }
.hero-stats { animation-delay: 0.5s; }

/* Scroll animations (activated by JS) */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}