/* ========================================
   WHITE TEXT OVERRIDE - Load first for maximum priority
   ======================================== */
@import url('white-text-override.css');

/* ========================================
   NUCLEAR DARK THEME - Maximum priority override
   ======================================== */
@import url('nuclear-dark-override.css');

/* ========================================
   DARK THEME OVERRIDE - Apply to entire site
   ======================================== */
@import url('dark-theme-override.css');

/* ========================================
   CITY PAGES DARK THEME
   ======================================== */
@import url('city-pages-dark.css');

/* ========================================
   LUXURY THEME IMPORT
   ======================================== */
@import url('luxury-theme.css');

/* ========================================
   MOBILE OPTIMIZATION IMPORT
   ======================================== */
@import url('mobile-optimized.css');

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

:root {
    /* Color Palette - Serene Space AI Logo Theme (Dark Navy + Light Blue) */
    --primary-color: #66d9ff;
    --primary-dark: #0099cc;
    --primary-light: #99e6ff;
    --secondary-color: #66d9ff;
    --accent-color: #66d9ff;
    --success-color: #10b981;
    --dark-navy: #001a33;
    --dark-navy-light: #002d4d;
    
    /* Gradient Colors */
    --gradient-1: linear-gradient(135deg, #001a33 0%, #002d4d 100%);
    --gradient-2: linear-gradient(135deg, #66d9ff 0%, #0099cc 100%);
    --gradient-3: linear-gradient(135deg, #001a33 0%, #66d9ff 100%);
    --gradient-hero: linear-gradient(135deg, #001a33 0%, #002d4d 50%, #004d80 100%);
    
    /* Neutral Colors - DARK THEME */
    --text-primary: #ffffff;
    --text-secondary: #ffffff;
    --text-light: #ffffff;
    --bg-primary: #001a33;
    --bg-secondary: #002d4d;
    --bg-tertiary: #004d80;
    --border-color: #0066a3;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Legal Checkbox */
    --checkbox-size: 18px;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 400ms ease-in-out;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background: var(--deep-navy, #0a1628) !important;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(102, 217, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(102, 217, 255, 0.05) 0%, transparent 50%),
        linear-gradient(180deg, #0a1628 0%, #050b14 100%) !important;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Add subtle circuit pattern to body */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(102, 217, 255, 0.02) 2px, rgba(102, 217, 255, 0.02) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(102, 217, 255, 0.02) 2px, rgba(102, 217, 255, 0.02) 4px);
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

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

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

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

.logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* ========================================
   Buttons
   ======================================== */
.btn-primary, .btn-secondary, .btn-large {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-2);
    color: white;
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.arrow {
    transition: transform var(--transition-base);
}

.btn-primary:hover .arrow,
.btn-large:hover .arrow {
    transform: translateX(4px);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #e0f2fe 0%, #e0f7fa 50%, #e1f5fe 100%);
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    top: -250px;
    left: -250px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%);
    top: 50%;
    right: -200px;
    animation-delay: 5s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    bottom: -175px;
    left: 30%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1.25rem;
    background: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    animation: slideDown 0.6s ease-out;
}

.hero-badge span {
    font-weight: 600;
    color: var(--primary-color);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    animation: slideUp 0.6s ease-out 0.2s both;
}

.gradient-text {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.8;
    animation: slideUp 0.6s ease-out 0.4s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
    animation: slideUp 0.6s ease-out 0.6s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
    animation: slideUp 0.6s ease-out 0.8s both;
}

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

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-top: var(--spacing-xs);
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

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

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

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-2);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    color: white;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-title {
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
    background: white;
}

.steps-container {
    max-width: 800px;
    margin: 0 auto;
}

.step-item {
    display: flex;
    gap: var(--spacing-lg);
    position: relative;
    margin-bottom: var(--spacing-2xl);
}

.step-item:last-child {
    margin-bottom: 0;
}

.step-item:last-child .step-line {
    display: none;
}

.step-number {
    flex-shrink: 0;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-2);
    color: white;
    border-radius: 50%;
    font-size: 1.75rem;
    font-weight: 700;
    font-family: var(--font-heading);
    box-shadow: var(--shadow-lg);
}

.step-line {
    position: absolute;
    left: 35px;
    top: 70px;
    width: 2px;
    height: calc(100% + var(--spacing-lg));
    background: linear-gradient(180deg, var(--primary-color) 0%, transparent 100%);
}

.step-content {
    flex: 1;
    padding-top: var(--spacing-sm);
}

.step-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.step-description {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.0625rem;
}

/* ========================================
   Benefits Section
   ======================================== */
.benefits {
    background: var(--bg-secondary);
}

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

.benefit-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

.benefit-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: var(--gradient-hero);
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><circle cx="30" cy="30" r="1.5" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.5;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .btn-primary {
    background: white;
    color: var(--primary-color);
    font-size: 1.25rem;
    padding: 1.25rem 2.5rem;
    margin-bottom: var(--spacing-md);
}

.cta-section .btn-primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.cta-note {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9375rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

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

.footer-brand .logo-container {
    margin-bottom: var(--spacing-md);
}

.footer-brand .logo-text {
    color: white;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    max-width: 350px;
}

.footer-heading {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

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

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

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.disclaimer {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.trust-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
}

.trust-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    white-space: nowrap;
}

.contact-info {
    margin-top: 15px;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 768px) {
    .trust-badges {
        gap: 10px;
    }
    .trust-badge {
        font-size: 0.75rem;
        padding: 6px 12px;
    }
    .contact-info {
        font-size: 0.8rem;
        line-height: 1.6;
    }
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        gap: var(--spacing-md);
        z-index: 999;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: var(--spacing-sm) 0;
        width: 100%;
        text-align: center;
    }

    .nav-links .btn-primary {
        width: 100%;
        justify-content: center;
    }

    .mobile-menu-toggle {
        display: flex;
        z-index: 1000;
    }

    .hero {
        padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-xl);
        min-height: auto;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

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

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

    .stat-number {
        font-size: 2rem;
    }

    .features-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .step-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .step-line {
        left: 50%;
        transform: translateX(-50%);
    }

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

    .footer-brand,
    .footer-column {
        text-align: center;
    }

    .footer-description {
        margin: 0 auto;
    }
}

/* Tablet Landscape Optimization (768px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }

    .hero-title {
        font-size: 2.75rem;
        line-height: 1.2;
    }

    .section-title {
        font-size: 2.25rem;
    }

    .features-grid,
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }

    .chat-demo {
        max-width: 650px;
    }
}

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

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

    .feature-card,
    .benefit-card {
        padding: var(--spacing-lg);
    }

    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* ========================================
   Legal Agreement Checkbox
   ======================================== */
.legal-agreement {
    margin-top: 1rem;
    text-align: center;
}

.legal-checkbox {
    display: inline-flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 500px;
    text-align: left;
}

.legal-checkbox input[type="checkbox"] {
    margin-top: 0.2rem;
    width: var(--checkbox-size);
    height: var(--checkbox-size);
    min-width: var(--checkbox-size);
    cursor: pointer;
    accent-color: var(--primary-color);
}

.legal-checkbox span {
    flex: 1;
}

.legal-checkbox a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .legal-agreement {
        margin-top: 0.875rem;
    }
    
    .legal-checkbox {
        font-size: 0.8125rem;
        gap: 0.4rem;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .legal-checkbox {
        font-size: 0.75rem;
    }
}