/* ===================================
   Global Styles and CSS Variables
   =================================== */

:root {
    /* Color Palette */
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --background-light: #ecf0f1;
    --background-white: #ffffff;
    --border-color: #bdc3c7;
    --success-color: #27ae60;
    
    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* ===================================
   Reset and Base Styles
   =================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

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

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

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

/* ===================================
   Layout Container
   =================================== */

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

/* ===================================
   Header and Navigation
   =================================== */

#header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #34495e 100%);
    color: var(--background-white);
    position: relative;
}

.navbar {
    background-color: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    width: 50px;
    height: 50px;
    color: var(--secondary-color);
}

.company-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--background-white);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--background-white);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--background-white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--background-white);
    transition: all var(--transition-normal);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    color: var(--background-white);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.cta-button {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--background-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.cta-button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--background-white);
}

/* ===================================
   Section Styles
   =================================== */

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

.section-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    border-radius: var(--radius-sm);
}

.section-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

/* ===================================
   About Section
   =================================== */

.about-section {
    background-color: var(--background-white);
}

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

.about-text h3 {
    color: var(--secondary-color);
    margin-top: var(--spacing-md);
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    color: var(--text-light);
    line-height: 1.8;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.illustration {
    width: 100%;
    max-width: 400px;
    height: auto;
}

/* ===================================
   Product Section
   =================================== */

.product-section {
    background-color: var(--background-light);
}

.product-showcase {
    margin-top: var(--spacing-lg);
}

.product-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.product-name {
    color: var(--primary-color);
    font-size: 2rem;
}

.product-tagline {
    font-size: 1.1rem;
    color: var(--text-light);
    font-style: italic;
}

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

.feature-card {
    background-color: var(--background-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.feature-card h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

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

.product-details {
    background-color: var(--background-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.product-details h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.capabilities-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
    list-style: none;
}

.capabilities-list li {
    padding: var(--spacing-xs) 0;
    color: var(--text-light);
    position: relative;
    padding-left: var(--spacing-md);
}

.capabilities-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
    font-size: 1.2rem;
}

/* ===================================
   Benefits Section
   =================================== */

.benefits-section {
    background-color: var(--background-white);
}

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

.benefit-card {
    background: linear-gradient(135deg, var(--background-white) 0%, var(--background-light) 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
}

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

.benefit-icon {
    width: 60px;
    height: 60px;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.benefit-card h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
}

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

/* ===================================
   Footer
   =================================== */

.footer {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1a252f 100%);
    color: var(--background-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

.contact-list {
    list-style: none;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.8);
}

.contact-icon {
    width: 20px;
    height: 20px;
    color: var(--secondary-color);
    flex-shrink: 0;
}

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

.contact-list a:hover {
    color: var(--secondary-color);
}

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

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

.social-link:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

.social-link svg {
    width: 20px;
    height: 20px;
    color: var(--background-white);
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-link {
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--secondary-color);
}

/* ===================================
   Responsive Design - Tablet
   =================================== */

@media (max-width: 768px) {
    /* Typography adjustments */
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    /* Navigation */
    .nav-wrapper {
        position: relative;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--primary-color);
        padding: var(--spacing-sm);
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }
    
    .nav-menu.active {
        max-height: 300px;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-sm);
        border-radius: var(--radius-sm);
    }
    
    /* About section */
    .about-content {
        grid-template-columns: 1fr;
    }
    
    /* Product features */
    .product-features {
        grid-template-columns: 1fr;
    }
    
    /* Benefits grid */
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    /* Spacing adjustments */
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
}

/* ===================================
   Responsive Design - Mobile
   =================================== */

@media (max-width: 480px) {
    /* Typography */
    html {
        font-size: 14px;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    /* Logo and company name */
    .logo-icon {
        width: 40px;
        height: 40px;
    }
    
    .company-name {
        font-size: 1.2rem;
    }
    
    /* Container padding */
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* CTA button */
    .cta-button {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 1rem;
    }
    
    /* Cards */
    .feature-card,
    .benefit-card {
        padding: var(--spacing-sm);
    }
    
    /* Capabilities list */
    .capabilities-list {
        grid-template-columns: 1fr;
    }
    
    /* Spacing adjustments */
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 2.5rem;
    }
}

/* ===================================
   Accessibility Enhancements
   =================================== */

/* Focus styles for keyboard navigation */
a:focus,
button:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Reduced motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000000;
        --secondary-color: #0066cc;
        --border-color: #000000;
    }
    
    .feature-card,
    .benefit-card {
        border: 2px solid var(--border-color);
    }
}

/* ===================================
   Print Styles
   =================================== */

@media print {
    .navbar,
    .mobile-menu-toggle,
    .cta-button,
    .social-links {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
    }
    
    body {
        font-size: 12pt;
        color: #000000;
    }
}