/* AstraLucent AI - Main Stylesheet */

:root {
    /* Colors - Enhanced for better contrast */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #10b981;
    --dark: #0f172a;
    --dark-lighter: #1e293b;
    --light: #f8fafc;
    --gray: #475569; /* Darker for better contrast */
    --gray-light: #e2e8f0;
    --gray-dark: #334155; /* New darker gray */
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --gradient-hover: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    
    /* Typography - Enhanced weights */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    --transition-fast: all 0.2s ease;
    
    /* Shadows - Enhanced */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: var(--line-height-base);
    color: var(--dark);
    background: var(--light);
    overflow-x: hidden;
}

/* Typography - Enhanced for better readability */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

h1 { 
    font-size: 3.5rem; 
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -0.02em;
}
h2 { 
    font-size: 2.5rem; 
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.01em;
}
h3 { 
    font-size: 1.75rem; 
    font-weight: var(--font-weight-semibold);
}
h4 { 
    font-size: 1.25rem; 
    font-weight: var(--font-weight-semibold);
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--gray-dark);
    line-height: 1.7;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
    font-weight: var(--font-weight-medium);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Focus states for accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

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

/* Navigation - Enhanced */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(248, 250, 252, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.navbar.scrolled {
    padding: 0.75rem 0;
    box-shadow: var(--shadow-md);
}

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

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

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    text-decoration: none;
}

.logo-link:hover {
    text-decoration: none;
}

.logo-container {
    transition: transform 0.3s ease;
}

.logo-link:hover .logo-container {
    transform: scale(1.05);
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline;
    line-height: 1;
    font-weight: 700;
    filter: brightness(1.2);
}

.logo-tagline {
    font-size: 0.875rem;
    font-weight: 600;
    color: #6b7280;
    display: inline;
    margin-left: 0.35rem;
    vertical-align: baseline;
}

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

.nav-link {
    font-weight: 500;
    color: var(--dark);
    position: relative;
    text-decoration: none;
}

.nav-link:hover {
    text-decoration: none;
}

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

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

.nav-cta {
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    white-space: nowrap;
    text-decoration: none;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
    color: white;
    text-decoration: none;
}

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

.nav-toggle .bar {
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition-base);
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        width: 100%;
        height: calc(100vh - 60px);
        height: calc(var(--vh, 1vh) * 100 - 60px);
        background: white;
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-xl);
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    /* Backdrop for mobile menu */
    .nav-backdrop {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.3);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
        z-index: 998;
    }
    
    .nav-backdrop.active {
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
        position: relative;
        z-index: 1001;
        padding: 0.5rem;
        margin: -0.5rem;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    body.menu-open {
        overflow: hidden;
        position: fixed;
        width: 100%;
    }
    
    .nav-link {
        padding: var(--spacing-sm) var(--spacing-xs);
        font-size: 1.125rem;
        font-weight: var(--font-weight-medium);
        border-bottom: 1px solid var(--gray-light);
        transition: var(--transition-fast);
    }
    
    .nav-link:hover {
        background: var(--light);
        padding-left: var(--spacing-sm);
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .nav-cta {
        margin-top: var(--spacing-md);
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* Hero Section */
.hero {
    min-height: calc(100vh - 60px);
    display: flex;
    align-items: center;
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
    margin-top: 60px;
    background: linear-gradient(135deg, #f8fafc 0%, #f3f4f6 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    opacity: 0.3;
}

.hero-particles {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    position: absolute;
    width: 100%;
    height: 100%;
    background: none !important;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-content {
    z-index: 1;
    text-align: left;
}

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

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-dark);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    font-weight: var(--font-weight-normal);
    max-width: 600px;
}

.hero-highlight {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, rgba(139, 69, 255, 0.2), rgba(58, 123, 213, 0.2));
    border: 1px solid rgba(139, 69, 255, 0.4);
    border-radius: 2rem;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero-highlight .highlight-icon {
    font-size: 1.5rem;
}

.hero-highlight p {
    margin: 0;
    color: var(--gray-dark);
    font-size: 0.95rem;
}

.hero-metrics {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.metric {
    text-align: center;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--primary);
    line-height: 1;
}

.stat-number {
    font-weight: var(--font-weight-extrabold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--gray);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-cta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    align-items: center;
    width: 100%;
}

.hero-cta-grid .btn {
    text-align: center;
    width: 100%;
    margin: 0;
}

/* Buttons - Enhanced */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
    background: var(--gradient-hover);
    text-decoration: none;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-1px);
    text-decoration: none;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border-radius: var(--radius-lg);
}

/* Button loading state */
.btn.loading {
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    margin: auto;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    border: 2px solid transparent;
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ai-visualization {
    width: 400px;
    height: 400px;
    position: relative;
}

.neural-network {
    width: 100%;
    height: 100%;
    position: relative;
    animation: rotate 20s linear infinite;
}

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

.node {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.5);
}

.node.central {
    width: 60px;
    height: 60px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.node.orbit-1 {
    top: 20%;
    left: 50%;
    animation: orbit 5s linear infinite;
}

.node.orbit-2 {
    top: 50%;
    right: 20%;
    animation: orbit 7s linear infinite reverse;
}

.node.orbit-3 {
    bottom: 20%;
    left: 30%;
    animation: orbit 9s linear infinite;
}

@keyframes orbit {
    from { transform: rotate(0deg) translateX(150px) rotate(0deg); }
    to { transform: rotate(360deg) translateX(150px) rotate(-360deg); }
}

/* Trust Indicators */
.trust-indicators {
    background: var(--light);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--gray-light);
    border-bottom: 1px solid var(--gray-light);
}

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

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--gray);
}

.trust-icon {
    width: 24px;
    height: 24px;
    opacity: 0.7;
}

/* Features Section */
.features {
    padding: var(--spacing-xl) 0;
    background: white;
}

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

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

.section-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
}

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

.feature-card {
    background: var(--light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-light);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
    background: white;
}

.feature-card:hover::before {
    transform: translateX(0);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.feature-icon img {
    width: 100%;
    height: 100%;
}

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

.feature-description {
    color: var(--gray);
    margin-bottom: var(--spacing-sm);
}

.feature-link {
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

/* Use Cases Preview */
.use-cases-preview {
    padding: var(--spacing-xl) 0;
    background: var(--light);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.use-case-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 1rem;
    text-align: center;
    transition: var(--transition-base);
    border: 1px solid var(--gray-light);
}

.use-case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.use-case-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-primary);
    border-radius: 50%;
}

.use-case-link {
    margin-top: var(--spacing-sm);
    display: inline-block;
}

/* Tech Demo Section */
.tech-demo {
    padding: var(--spacing-xl) 0;
    background: white;
}

.demo-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.demo-description {
    font-size: 1.125rem;
    color: var(--gray);
    margin-bottom: var(--spacing-md);
}

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

.demo-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.checkmark {
    color: var(--accent);
    font-size: 1.25rem;
}

.demo-visual {
    display: flex;
    justify-content: center;
}

.demo-placeholder {
    width: 100%;
    max-width: 500px;
}

.demo-screen {
    background: var(--dark);
    border-radius: 1rem;
    padding: var(--spacing-md);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.emotion-viz {
    background: var(--dark-lighter);
    border-radius: 0.5rem;
    padding: var(--spacing-md);
    text-align: center;
}

.emotion-state {
    color: var(--primary-light);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.emotion-graph {
    height: 100px;
    background: linear-gradient(to right, 
        rgba(99, 102, 241, 0.2) 0%, 
        rgba(99, 102, 241, 0.5) 50%, 
        rgba(139, 92, 246, 0.3) 100%);
    border-radius: 0.25rem;
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-xl) 0;
    background: var(--gradient-dark);
    color: white;
    text-align: center;
}

.cta-title {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--gray-light);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-title {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    margin-bottom: var(--spacing-md);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-lighter);
    border-radius: 0.5rem;
    color: var(--gray-light);
    transition: var(--transition-base);
}

.footer-social a:hover {
    background: var(--primary);
    color: white;
}

.footer-section h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

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

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--gray-light);
    transition: var(--transition-base);
}

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

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--dark-lighter);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

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

.footer-legal a {
    color: var(--gray-light);
}

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

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-visual {
        margin-top: var(--spacing-lg);
    }
    
    .demo-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    /* Typography adjustments */
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .hero {
        padding: var(--spacing-lg) 0;
        min-height: auto;
    }
    
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-metrics {
        justify-content: center;
        gap: var(--spacing-md);
        flex-wrap: wrap;
    }
    
    .metric {
        min-width: 100px;
    }
    
    .metric-value {
        font-size: 2rem;
    }
    
    .hero-cta {
        justify-content: center;
        gap: var(--spacing-xs);
    }
    
    .hero-cta-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 1rem;
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    /* Features section */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .feature-card {
        padding: var(--spacing-md);
    }
    
    /* Use cases */
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    /* Tech demo */
    .demo-visual {
        margin-top: var(--spacing-md);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-legal {
        margin-top: var(--spacing-sm);
    }
    
    /* AI Visualization */
    .ai-visualization {
        width: 300px;
        height: 300px;
    }
    
    /* Section spacing */
    .features,
    .use-cases-preview,
    .tech-demo,
    .cta-section,
    .testimonials-section,
    .case-studies-section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-header {
        margin-bottom: var(--spacing-lg);
    }
    
    /* Container padding for mobile */
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* iPhone specific fixes */
@supports (-webkit-touch-callout: none) {
    .nav-menu {
        -webkit-transform: translateX(-100%);
    }
    
    .nav-menu.active {
        -webkit-transform: translateX(0);
    }
    
    .nav-toggle {
        -webkit-tap-highlight-color: transparent;
        cursor: pointer;
    }
    
    /* Fix for iOS Safari bounce effect */
    body.menu-open {
        position: fixed;
        overflow: hidden;
        width: 100%;
        height: 100%;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Loading States */
.loading {
    position: relative;
    color: transparent;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.8s linear infinite;
}

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

/* Testimonials Section */
.testimonials-section {
    padding: var(--spacing-xl) 0;
    background: var(--light);
}

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

.testimonial-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: var(--transition-base);
    border: 1px solid var(--gray-light);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-light);
}

.testimonial-content {
    margin-bottom: var(--spacing-md);
}

.testimonial-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--dark);
    font-style: italic;
    position: relative;
    padding-left: var(--spacing-md);
}

.testimonial-content p::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -10px;
    font-size: 3rem;
    color: var(--primary);
    opacity: 0.3;
    font-style: normal;
}

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

.author-photo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--gradient-primary);
}

.testimonial-author h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark);
    margin: 0 0 4px 0;
}

.testimonial-author p {
    font-size: 0.875rem;
    color: var(--gray);
    margin: 0;
}

/* Case Studies Section */
.case-studies-section {
    padding: var(--spacing-xl) 0;
    background: white;
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.case-study-card {
    background: var(--light);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: var(--transition-base);
    border: 1px solid var(--gray-light);
}

.case-study-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.case-study-image {
    position: relative;
    height: 240px;
    background: var(--gradient-primary);
    overflow: hidden;
}

.case-study-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-study-category {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--primary);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.case-study-content {
    padding: var(--spacing-lg);
}

.case-study-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin: 0 0 var(--spacing-sm) 0;
}

.case-study-content p {
    font-size: 1rem;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.case-study-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray);
}

.case-study-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: var(--transition-base);
}

.case-study-link:hover {
    transform: translateX(5px);
}

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

/* Research Foundation Section */
.research-foundation-section {
    padding: var(--spacing-xl) 0;
    background: var(--light);
}

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

.research-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition-base);
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.research-card .research-icon {
    margin-bottom: var(--spacing-sm);
}

.research-card .research-icon img {
    width: 48px;
    height: 48px;
}

.research-card h3 {
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.research-description {
    font-style: italic;
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--light);
    border-left: 3px solid var(--primary);
}

.research-citation {
    font-size: 0.875rem;
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.research-implementation {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--accent);
}

.research-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-light);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray);
    margin-top: var(--spacing-xs);
}

/* System Demonstrations Section */
.demonstrations-section {
    padding: var(--spacing-xl) 0;
    background: white;
}

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

.demo-card {
    background: var(--light);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-base);
}

.demo-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.demo-header {
    padding: var(--spacing-md);
    background: white;
    border-bottom: 1px solid var(--gray-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.demo-icon img {
    width: 40px;
    height: 40px;
}

.demo-category {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.demo-content {
    padding: var(--spacing-lg);
}

.demo-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.demo-features {
    margin: var(--spacing-md) 0;
}

.demo-features .feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--gray);
}

.demo-features .checkmark {
    color: var(--accent);
    font-weight: bold;
}

.demo-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
}

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

/* Deployment Section */
.deployment-section {
    padding: var(--spacing-xl) 0;
    background: var(--gradient-dark);
    color: white;
}

.deployment-section .section-title {
    color: white;
}

.deployment-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

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

.deployment-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
}

.deployment-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary);
    transform: translateY(-5px);
}

.deployment-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.deployment-card h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.deployment-description {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.deployment-features {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-md);
}

.deployment-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.deployment-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary);
}

.deployment-highlight {
    background: linear-gradient(135deg, rgba(139, 69, 255, 0.1), rgba(58, 123, 213, 0.1));
    border: 1px solid rgba(139, 69, 255, 0.3);
    border-radius: 0.75rem;
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.deployment-highlight p {
    margin: 0;
    color: rgba(255, 255, 255, 0.95);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Discord Whisper Mode Section */
.whisper-mode {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, 
        rgba(139, 69, 255, 0.05), 
        rgba(58, 123, 213, 0.05)
    );
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.whisper-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.whisper-explanation h3 {
    color: var(--primary);
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
    font-size: 1.25rem;
}

.whisper-explanation p {
    color: var(--gray-dark);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.whisper-features-highlight {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.feature-highlight {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.highlight-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.highlight-content h4 {
    margin: 0 0 0.25rem 0;
    color: var(--primary);
    font-size: 1rem;
}

.highlight-content p {
    margin: 0;
    color: var(--gray-dark);
    font-size: 0.9rem;
    line-height: 1.4;
}

.whisper-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

/* Discord Interface Mockup */
.discord-interface-mockup {
    background: #36393f;
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid #202225;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.discord-header {
    background: #2f3136;
    padding: var(--spacing-md);
    border-bottom: 1px solid #202225;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.discord-channel {
    color: #ffffff;
    font-weight: 600;
    font-size: 1rem;
}

.discord-users {
    display: flex;
    gap: var(--spacing-sm);
}

.user-indicator {
    color: #b9bbbe;
    font-size: 0.85rem;
    padding: 0.25rem 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
}

.user-indicator.speaking {
    color: #00d166;
    background: rgba(0, 209, 102, 0.2);
}

.voice-interaction {
    padding: var(--spacing-md);
}

.voice-message {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: 0.75rem;
}

.voice-message.user {
    background: rgba(114, 137, 218, 0.2);
    border-left: 3px solid #7289da;
}

.voice-message.lilly {
    background: rgba(139, 69, 255, 0.2);
    border-left: 3px solid var(--primary);
}

.voice-message.lilly.ambient {
    background: rgba(139, 69, 255, 0.1);
    border-left: 3px solid rgba(139, 69, 255, 0.5);
    font-style: italic;
}

.message-audio {
    color: #ffffff;
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.message-status {
    color: #b9bbbe;
    font-size: 0.8rem;
    font-style: italic;
}

.screen-share-indicator {
    background: #202225;
    padding: var(--spacing-sm);
    text-align: center;
    border-top: 1px solid #36393f;
}

.screen-share-indicator span {
    color: #00d166;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Responsive Design for Whisper Mode */
@media (max-width: 768px) {
    .whisper-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .whisper-features-highlight {
        grid-template-columns: 1fr;
    }
    
    .whisper-cta {
        flex-direction: column;
    }
    
    .discord-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
    
    .discord-users {
        align-self: stretch;
        justify-content: space-between;
    }
}

.deployment-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.deployment-link:hover {
    color: #00a8cc;
}

/* Research Program Section */
.research-program-section {
    padding: var(--spacing-xl) 0;
    background: var(--dark);
    color: white;
}

.research-program-section .section-title,
.research-program-section .section-subtitle {
    color: white;
}

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

.program-card {
    background: var(--dark-lighter);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.program-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.program-card h3 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.program-card p {
    color: var(--gray-light);
    margin-bottom: var(--spacing-md);
}

.program-benefits {
    list-style: none;
    padding: 0;
}

.program-benefits li {
    color: var(--gray-light);
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-sm);
    position: relative;
}

.program-benefits li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-light);
}

.program-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.program-cta h3 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.program-cta p {
    color: var(--gray-light);
    margin-bottom: var(--spacing-md);
}

/* Responsive updates for new sections */
@media (max-width: 768px) {
    .research-grid,
    .demo-grid,
    .program-grid,
    .deployment-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .research-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .demo-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .deployment-card {
        padding: var(--spacing-md);
    }
}

/* Page Hero Section */
.page-hero {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.page-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
        word-wrap: break-word;
    }
    
    .page-subtitle {
        font-size: 1.125rem;
    }
}

/* Text utilities */
.text-center {
    text-align: center;
}

/* Emotional Avatars Section */
.emotional-avatars {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
}

.avatar-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

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

.avatar-demo {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-light);
}

.avatar-container {
    text-align: center;
}

.avatar-preview {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.avatar-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary);
    transition: var(--transition-base);
}

.emotion-indicator {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
}

.vad-display {
    margin-top: 2px;
    opacity: 0.8;
    font-size: 0.75rem;
}

.emotion-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xs);
}

.emotion-btn {
    background: var(--light);
    border: 1px solid var(--gray-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

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

.avatar-upload {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    border: 2px dashed var(--gray-light);
    transition: var(--transition-base);
}

.avatar-upload:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.avatar-upload h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
    font-weight: var(--font-weight-semibold);
}

.upload-options {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.upload-btn {
    flex: 1;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: var(--transition-base);
}

.upload-btn:hover {
    background: var(--gradient-hover);
    transform: translateY(-1px);
}

.upload-info {
    color: var(--gray);
    font-size: 0.875rem;
    line-height: 1.5;
}

.avatar-text .section-title {
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.avatar-description {
    font-size: 1.125rem;
    color: var(--gray-dark);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.avatar-features {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.avatar-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.avatar-feature .feature-icon {
    font-size: 1.5rem;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.avatar-feature h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
    font-weight: var(--font-weight-semibold);
}

.avatar-feature p {
    color: var(--gray);
    font-size: 0.875rem;
    line-height: 1.5;
}

.avatar-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.avatar-stats .stat {
    text-align: center;
}

.avatar-stats .stat-number {
    display: block;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.avatar-stats .stat-label {
    font-size: 0.875rem;
    color: var(--gray);
    font-weight: var(--font-weight-medium);
}

@media (max-width: 768px) {
    .avatar-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .avatar-visual {
        order: 2;
    }
    
    .avatar-text {
        order: 1;
    }
    
    .avatar-image {
        width: 150px;
        height: 150px;
    }
    
    .emotion-controls {
        grid-template-columns: 1fr;
    }
    
    .upload-options {
        flex-direction: column;
    }
    
    .avatar-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}
/* Phone Number Styling */
.nav-phone {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white !important;
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s;
    margin-left: 15px;
}

.nav-phone:hover {
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

@media (max-width: 768px) {
    .nav-phone {
        margin: 10px 20px;
        display: block;
        text-align: center;
    }
}

.hero-phone a:hover {
    text-decoration: underline !important;
}

/* Pulsing animation for phone CTAs */
@keyframes phonePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.hero-phone a {
    display: inline-block;
    animation: phonePulse 2s ease-in-out infinite;
}