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

:root {
    /* Modern Color Palette */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;
    --bg-gradient: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
    --bg-gradient-light: linear-gradient(135deg, #f0f9ff 0%, #e0e7ff 100%);
    
    /* Border & Shadow */
    --border-color: #e2e8f0;
    --border-radius: 16px;
    --border-radius-lg: 24px;
    --border-radius-sm: 12px;
    
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header - Modern Glass Effect */
.header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.navbar {
    padding: 1.25rem 0;
}

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

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition-base);
}

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

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

.language-selector select {
    padding: 0.625rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    outline: none;
}

.language-selector select:hover,
.language-selector select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Hero Section - Modern Gradient with Video */
.hero {
    padding: var(--spacing-3xl) 0;
    background: 
        linear-gradient(135deg, #3b82f6 0%, #1e40af 50%, #1e3a8a 100%),
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(30, 64, 175, 0.3) 0%, transparent 50%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
    pointer-events: none;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 70% 60%, rgba(147, 197, 253, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(96, 165, 250, 0.1) 0%, transparent 60%);
    animation: rotate 30s linear infinite;
    pointer-events: none;
}

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

/* Hero Decorative Elements */
.hero-decoration {
    position: absolute;
    pointer-events: none;
    opacity: 0.15;
    z-index: 0;
}

.hero-circle-1 {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    animation: float 6s ease-in-out infinite;
}

.hero-circle-2 {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(147, 197, 253, 0.3) 0%, transparent 70%);
    bottom: -150px;
    left: 10%;
    animation: float 8s ease-in-out infinite reverse;
}

.hero-circle-3 {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.25) 0%, transparent 70%);
    top: 50%;
    right: 15%;
    animation: float 7s ease-in-out infinite;
}

.hero-polygon-1 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    top: 20%;
    left: -50px;
    animation: rotate 20s linear infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) translateX(0px);
    }
    33% {
        transform: translateY(-30px) translateX(20px);
    }
    66% {
        transform: translateY(20px) translateX(-15px);
    }
}

.hero .container {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    z-index: 1;
}

.hero-content {
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
    color: var(--text-white);
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
}

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

.hero-video {
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

.hero-video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-video-player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: var(--border-radius-lg);
}

/* Buttons - Modern Design */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-download {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
    width: 100%;
    margin-top: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary-color));
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Features Section - Modern Cards */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
    position: relative;
}

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

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.feature-card {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    text-align: left;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: inline-block;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
}

/* Core Features Section */
.core-features-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0e7ff 50%, #f3e8ff 100%);
    position: relative;
    overflow: hidden;
}

.core-features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.core-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.core-feature-card {
    background: var(--bg-primary);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.core-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.core-feature-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-light);
}

.core-feature-card:hover::before {
    transform: scaleX(1);
}

.core-feature-icon-wrapper {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.core-feature-card:hover .core-feature-icon-wrapper {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-xl);
}

.core-feature-icon-wrapper::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0.3;
    z-index: -1;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.1;
    }
}

.core-feature-icon {
    font-size: 3.5rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.core-feature-card h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.core-feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.05rem;
    margin-bottom: var(--spacing-xl);
}

/* Platform Badges */
.platform-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.platform-badge {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.platform-badge:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* Security Badges */
.security-badges {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.security-badge {
    padding: 0.625rem 1rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border: 1.5px solid var(--primary-light);
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
    transition: all var(--transition-fast);
}

.security-badge:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
    border-color: transparent;
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

/* Powerful Stats */
.powerful-stats {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.powerful-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1.5px solid var(--border-color);
    min-width: 100px;
    transition: all var(--transition-fast);
}

.powerful-stat:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: transparent;
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.powerful-stat:hover .stat-number,
.powerful-stat:hover .stat-text {
    color: var(--text-white);
}

.powerful-stat .stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.powerful-stat .stat-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

/* Video Section */
.video-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.video-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
    margin-top: var(--spacing-3xl);
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.video-player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-info {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.video-info h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-weight: 700;
}

.video-features-list {
    list-style: none;
    padding: 0;
}

.video-features-list li {
    padding: var(--spacing-md) 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.video-features-list li:last-child {
    border-bottom: none;
}

.video-features-list li:hover {
    color: var(--primary-color);
    padding-left: var(--spacing-sm);
    transition: all var(--transition-base);
}

/* Stats Section */
.stats-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.stat-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-base);
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stat-number {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.stat-label {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

/* Use Cases Section */
.use-cases-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.usecases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.usecase-card {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.usecase-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition-base);
}

.usecase-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
    background: var(--bg-primary);
}

.usecase-card:hover::before {
    transform: scaleY(1);
}

.usecase-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.usecase-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 700;
}

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

/* How It Works Section */
.how-it-works-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-gradient-light);
    position: relative;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
    position: relative;
}

.step-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    position: relative;
}

.step-number {
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    flex-shrink: 0;
    width: 80px;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 700;
}

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

/* Security Section */
.security-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

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

.security-text {
    padding-right: var(--spacing-xl);
}

.security-features {
    margin-top: var(--spacing-xl);
}

.security-feature-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    align-items: flex-start;
}

.security-check {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.security-feature-item h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 700;
}

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

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

.security-illustration {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
}

.security-illustration::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

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

.shield-icon {
    font-size: 8rem;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
}

/* Support Section */
.support {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.support-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.support-card {
    background: var(--bg-primary);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.support-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.support-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 700;
}

.support-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-white);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 0.95rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        gap: var(--spacing-2xl);
    }
    
    .video-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .security-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .security-text {
        padding-right: 0;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        gap: var(--spacing-md);
    }

    .nav-menu a {
        display: none;
    }

    .hero {
        padding: var(--spacing-2xl) 0;
    }

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

    .hero-video-wrapper {
        margin-top: var(--spacing-lg);
    }

    .hero-buttons {
        justify-content: center;
    }

    .features-grid,
    .usecases-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .steps-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .core-features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .section-title {
        font-size: 2rem;
    }

    .container {
        padding: 0 20px;
    }
}

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

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }

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

    .video-info {
        padding: var(--spacing-lg);
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background: var(--primary-color);
    color: var(--text-white);
}

::-moz-selection {
    background: var(--primary-color);
    color: var(--text-white);
}