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

:root {
    /* Navy Blue Theme Colors */
    --primary-navy: #1a237e;
    --secondary-navy: #283593;
    --light-navy: #3f51b5;
    --dark-navy: #0d1421;
    --accent-blue: #2196f3;
    --light-blue: #64b5f6;
    
    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f5f7fa;
    --medium-gray: #9e9e9e;
    --dark-gray: #424242;
    --black: #212121;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-navy) 0%, var(--secondary-navy) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-blue) 0%, var(--light-blue) 100%);
    --gradient-dark: linear-gradient(135deg, var(--dark-navy) 0%, var(--primary-navy) 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(26, 35, 126, 0.1);
    --shadow-md: 0 4px 12px rgba(26, 35, 126, 0.15);
    --shadow-lg: 0 8px 24px rgba(26, 35, 126, 0.2);
    --shadow-xl: 0 16px 48px rgba(26, 35, 126, 0.25);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --white: #121212;
    --light-gray: #1e1e1e;
    --medium-gray: #757575;
    --dark-gray: #e0e0e0;
    --black: #ffffff;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
}

/* Dark mode hero text fix */
[data-theme="dark"] .hero-title,
[data-theme="dark"] .hero-subtitle,
[data-theme="dark"] .page-title,
[data-theme="dark"] .page-subtitle {
    color: #ffffff; /* Pure white for maximum contrast in dark mode */
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

/* Light mode text colors for better contrast */
.hero-title,
.page-title {
    color: #1a237e; /* Dark navy for excellent contrast on light backgrounds */
    text-shadow: 2px 2px 4px rgba(255, 255, 255, 0.8);
}

.hero-subtitle,
.page-subtitle {
    color: #283593; /* Medium navy for good readability */
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.6);
}

/* Base Typography */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--light-blue);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 35, 126, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-normal);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar.scrolled {
    background: rgba(26, 35, 126, 0.98);
    box-shadow: var(--shadow-md);
}

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

.nav-logo a {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--white);
    text-decoration: none;
}

.nav-logo img {
    height: 40px;
    width: auto;
    margin-right: 5px;
}

.nav-logo i {
    font-size: 1.75rem;
    color: var(--accent-blue);
}

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

.nav-link {
    color: var(--white);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-blue);
    background: rgba(33, 150, 243, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.theme-toggle {
    background: none;
    border: 2px solid var(--accent-blue);
    color: var(--accent-blue);
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--accent-blue);
    color: var(--white);
    transform: scale(1.1);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--white);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -2;
    background: url('../images/hero-background.jpg') center/cover no-repeat;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(2px) brightness(0.3);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-dark);
    opacity: 0.8;
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: var(--white);
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 4rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: var(--font-weight-light);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

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

/* Page Hero (for other pages) */
.page-hero {
    position: relative;
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 80px;
}

.page-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-subtitle {
    font-size: 1.125rem;
    font-weight: var(--font-weight-light);
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.9;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

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

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

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

.btn-secondary:hover {
    background: var(--accent-blue);
    transform: translateY(-2px);
}

/* Sections */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xl);
    color: var(--primary-navy);
}

/* Features Section */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--light-gray);
}

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

.feature-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--white);
}

.feature-card h3 {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
}

.feature-link {
    color: var(--accent-blue);
    font-weight: var(--font-weight-medium);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.feature-link:hover {
    transform: translateX(4px);
}

/* Stats Section */
.stats {
    padding: var(--spacing-xxl) 0;
    background: var(--gradient-primary);
    color: var(--white);
}

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

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

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--accent-blue);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* Content Sections */
.content-section {
    padding: var(--spacing-xxl) 0;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-xxl);
}

.main-content {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.main-content h2 {
    color: var(--primary-navy);
    border-bottom: 3px solid var(--accent-blue);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.main-content h3 {
    color: var(--secondary-navy);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.info-card {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-blue);
}

.info-card h4 {
    color: var(--primary-navy);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.info-card i {
    color: var(--accent-blue);
}

/* Comparison Grid */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.comparison-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid;
}

.comparison-card.original {
    border-color: #4caf50;
    background: rgba(76, 175, 80, 0.05);
}

.comparison-card.deepfake {
    border-color: #f44336;
    background: rgba(244, 67, 54, 0.05);
}

.comparison-card h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.comparison-card.original h4 {
    color: #4caf50;
}

.comparison-card.deepfake h4 {
    color: #f44336;
}

.comparison-card ul {
    list-style: none;
    padding: 0;
}

.comparison-card li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.comparison-card li:last-child {
    border-bottom: none;
}

/* Tech Steps */
.tech-explanation {
    margin: var(--spacing-lg) 0;
}

.tech-step {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--light-gray);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.tech-step:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.step-content h4 {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-xs);
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.sidebar-widget {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.sidebar-widget h3 {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.sidebar-nav {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: var(--spacing-xs);
}

.sidebar-nav a {
    color: var(--dark-gray);
    padding: var(--spacing-xs);
    display: block;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.sidebar-nav a:hover {
    background: var(--light-gray);
    color: var(--primary-navy);
    transform: translateX(4px);
}

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

.related-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.related-link:hover {
    background: var(--accent-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.related-link i {
    color: var(--accent-blue);
    transition: color var(--transition-fast);
}

.related-link:hover i {
    color: var(--white);
}

/* Latest Content */
.latest-content {
    padding: var(--spacing-xxl) 0;
    background: var(--light-gray);
}

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

.content-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.content-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.content-image {
    height: 200px;
    overflow: hidden;
}

.content-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.content-card:hover .content-image img {
    transform: scale(1.1);
}

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

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

.content-category {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
}

.content-date {
    color: var(--medium-gray);
    font-size: 0.875rem;
}

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

.content-link {
    color: var(--accent-blue);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
}

.content-link:hover {
    color: var(--primary-navy);
}

/* Footer */
.footer {
    background: var(--dark-navy);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 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: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    color: var(--accent-blue);
}

.footer-section h4 {
    color: var(--accent-blue);
    margin-bottom: var(--spacing-md);
}

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--accent-blue);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--accent-blue);
    transform: translateY(-2px);
}

.newsletter {
    display: flex;
    margin-top: var(--spacing-md);
}

.newsletter-input {
    flex: 1;
    padding: var(--spacing-sm);
    border: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.newsletter-btn {
    background: var(--accent-blue);
    border: none;
    padding: var(--spacing-sm);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--white);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.newsletter-btn:hover {
    background: var(--light-blue);
}

.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);
}

.footer-bottom a {
    color: var(--accent-blue);
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .sidebar {
        order: -1;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .page-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--primary-navy);
        flex-direction: column;
        padding: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.2;
        margin-bottom: var(--spacing-md);
    }
    
    .page-title {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .hero-subtitle,
    .page-subtitle {
        font-size: 1rem;
        line-height: 1.5;
        padding: 0 var(--spacing-sm);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .nav-container {
        padding: var(--spacing-sm);
    }
    
    .nav-logo a {
        font-size: 1.25rem;
    }
    
    .nav-logo img {
        height: 35px;
    }
    
    .section-title {
        font-size: 1.75rem;
        text-align: center;
    }
    
    .newsletter {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .newsletter-input,
    .newsletter-btn {
        border-radius: var(--radius-md);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .page-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .tech-step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        margin: 0 auto var(--spacing-sm);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

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

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

button:focus,
.btn:focus {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .navbar,
    .footer,
    .sidebar,
    .hero-buttons,
    .scroll-to-top {
        display: none;
    }
    
    .hero {
        height: auto;
        padding: var(--spacing-lg) 0;
    }
    
    .page-hero {
        height: auto;
        margin-top: 0;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1 { font-size: 24pt; }
    h2 { font-size: 20pt; }
    h3 { font-size: 16pt; }
    h4 { font-size: 14pt; }
    h5 { font-size: 12pt; }
    h6 { font-size: 10pt; }
}