/* Modern CSS with CSS Variables for easy theming */
:root {
    /* Primary colors */
    --primary-color: #4A90E2;
    --secondary-color: #34495e;
    --accent-color: #1abc9c;
    
    /* Background colors */
    --bg-light: #ffffff;
    --bg-dark: #2c3e50;
    --bg-accent: #f0f6ff;
    
    /* Text colors */
    --text-dark: #333333;
    --text-light: #ffffff;
    --text-muted: #7f8c8d;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Border radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-light);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

a:hover {
    color: var(--accent-color);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

h3 {
    font-size: 1.5rem;
}

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

/* Header Styles */
header {
    background-color: var(--bg-light);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-sm);
}

.logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.logo-svg {
    margin-right: var(--spacing-xs);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: var(--spacing-md);
}

nav ul li a {
    color: var(--text-dark);
    font-weight: 500;
    padding: var(--spacing-xs);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

nav ul li a:hover {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    height: 3px;
    width: 100%;
    background-color: var(--text-dark);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-accent) 100%);
    padding: var(--spacing-xl) 0;
}

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

.hero-content {
    flex: 1;
    padding-right: var(--spacing-md);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
}

.hero-visual {
    flex: 1;
}

/* CTA Buttons */
.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background-color: var(--accent-color);
    color: var(--text-light);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.secondary-button {
    display: inline-block;
    background-color: transparent;
    color: var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition-normal);
    border: 2px solid var(--primary-color);
    cursor: pointer;
}

.secondary-button:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
}

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

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

.feature-card {
    background-color: var(--bg-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-10px);
}

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

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
}

/* Technology Section */
.technology {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-accent);
}

.tech-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}

.tech-info {
    flex: 1;
    min-width: 300px;
    padding-right: var(--spacing-md);
}

.tech-visual {
    flex: 1;
    min-width: 300px;
}

.tech-list {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-md);
}

.tech-list li {
    margin-bottom: var(--spacing-sm);
}

/* About Section */
.about {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
    text-align: center;
}

.about-text {
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    font-size: 1.1rem;
}

.keywords-section {
    margin: var(--spacing-md) 0;
}

.keyword-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.keyword {
    background-color: var(--bg-accent);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--text-light);
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    flex: 1;
    min-width: 200px;
    margin-bottom: var(--spacing-md);
}

.footer-logo p {
    margin-top: var(--spacing-xs);
}

.footer-links {
    flex: 2;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.link-group {
    margin-bottom: var(--spacing-md);
    min-width: 150px;
}

.link-group h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
}

.link-group ul {
    list-style: none;
}

.link-group ul li {
    margin-bottom: var(--spacing-xs);
}

.link-group ul li a {
    color: var(--text-light);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.link-group ul li a:hover {
    opacity: 1;
}

.copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-sm);
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: var(--spacing-md);
    }
    
    .tech-content {
        flex-direction: column;
    }
    
    .tech-info {
        padding-right: 0;
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    header .container {
        flex-wrap: wrap;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    nav {
        flex-basis: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
        width: 100%;
    }
    
    nav.active {
        max-height: 300px;
    }
    
    nav ul {
        flex-direction: column;
        width: 100%;
        padding: var(--spacing-sm) 0;
    }
    
    nav ul li {
        margin: 0;
        text-align: center;
    }
    
    nav ul li a {
        display: block;
        padding: var(--spacing-xs) 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}

@media (max-width: 576px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}