/* ===================================
   CSS RESET & BASE STYLES
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors - AI Tech Theme */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #ec4899;
    --accent: #14b8a6;
    
    /* Neutral Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #14b8a6 0%, #6366f1 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-display: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===================================
   NAVIGATION
   =================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

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

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

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

.nav-link.cta-button {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.nav-link.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-xs);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    padding: calc(80px + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-xl);
    color: var(--primary-light);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.hero-badge i {
    width: 16px;
    height: 16px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn i {
    width: 20px;
    height: 20px;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero-visual {
    position: relative;
}

.hero-image-container {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    background: var(--gradient-secondary);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    display: block;
}

.floating-card {
    position: absolute;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow-xl);
    animation: float 3s ease-in-out infinite;
}

.floating-card i {
    width: 20px;
    height: 20px;
    color: var(--primary-light);
}

.card-1 {
    top: 10%;
    right: -10%;
    animation-delay: 0s;
}

.card-2 {
    bottom: 30%;
    left: -10%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 10%;
    right: 10%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ===================================
   FEATURES SECTION
   =================================== */
.features {
    padding: var(--spacing-3xl) var(--spacing-lg);
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

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

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

.feature-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

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

.feature-icon i {
    width: 28px;
    height: 28px;
    color: white;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

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

/* ===================================
   HOW IT WORKS SECTION
   =================================== */
.how-it-works {
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.steps {
    display: grid;
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.step-content {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.step-content:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateX(8px);
}

.step-icon {
    width: 48px;
    height: 48px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.step-icon i {
    width: 24px;
    height: 24px;
    color: var(--primary-light);
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

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

/* ===================================
   BENEFITS SECTION
   =================================== */
.benefits {
    padding: var(--spacing-3xl) var(--spacing-lg);
    background: var(--bg-secondary);
}

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

.benefit-list {
    display: grid;
    gap: var(--spacing-lg);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-md);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.benefit-icon i {
    width: 24px;
    height: 24px;
    color: white;
}

.benefit-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

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

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

.benefits-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    width: 100%;
    max-width: 400px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.card-header i {
    width: 24px;
    height: 24px;
    color: var(--primary-light);
}

.card-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.card-stat {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg);
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-chart {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-sm);
    height: 120px;
}

.chart-bar {
    flex: 1;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    transition: height var(--transition-slow);
}

/* ===================================
   CTA SECTION
   =================================== */
.cta {
    padding: var(--spacing-3xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.cta-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.cta-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.cta-note i {
    width: 16px;
    height: 16px;
    color: var(--accent);
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

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

.footer-column h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-base);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
}

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

.footer-social a {
    color: var(--text-secondary);
    transition: color var(--transition-base);
}

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

.footer-social i {
    width: 20px;
    height: 20px;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .benefits-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero {
        padding: calc(80px + var(--spacing-xl)) var(--spacing-md) var(--spacing-xl);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .step {
        grid-template-columns: 1fr;
    }
    
    .step-number {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* ===================================
   PRINT STYLES
   =================================== */
@media print {
    .nav,
    .mobile-menu-toggle,
    .cta,
    .footer {
        display: none;
    }
}