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

:root {
    /* Colors - Based on NegocioListo brand */
    --primary: #009FE3;
    --primary-dark: #312783;
    --secondary: #4285F4;
    --accent: #FFCA28;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #121212;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

html {
    scroll-behavior: smooth;
}

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo-icon {
    font-size: var(--font-size-2xl);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

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

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

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

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

.cta-button {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 8px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.cta-button::after {
    display: none;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

/* Hero Section */
.hero {
    padding: calc(80px + var(--spacing-2xl)) 0 var(--spacing-2xl);
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    min-height: auto;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

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

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

.feature-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.badge-icon {
    font-size: var(--font-size-lg);
}

.hero-image {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
    object-fit: contain;
    display: block;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: high-quality;
}

.hero-img:hover {
    transform: scale(1.02);
}

/* Why Section */
.why-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    color: var(--text-primary);
}

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

.why-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    text-align: center;
}

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

.why-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.why-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

/* Featured Section - Colecciones + Portal del Cliente */
.featured-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.featured-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.featured-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.featured-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 800px;
    margin: var(--spacing-md) auto 0;
    line-height: 1.8;
}

.featured-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.featured-main-card {
    background: white;
    border-radius: 24px;
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
}

.featured-card-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.featured-image-carousel {
    position: relative;
    width: 100%;
}

.carousel-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    max-height: 600px;
}

.carousel-slide {
    display: none;
    width: 100%;
    height: 100%;
    position: relative;
}

.carousel-slide.active {
    display: block;
}

.carousel-image {
    width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: contain;
    display: block;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
    padding: var(--spacing-lg);
    text-align: center;
}

.carousel-caption h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.carousel-caption p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.carousel-btn {
    background: var(--primary);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.carousel-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.carousel-dots {
    display: flex;
    gap: var(--spacing-xs);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all var(--transition-base);
}

.dot.active {
    background: var(--primary);
    transform: scale(1.2);
}


.featured-main-card:hover .featured-main-image {
    transform: scale(1.02);
}

.featured-text h3 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.featured-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.featured-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: all var(--transition-base);
}

.benefit-item:hover {
    background: white;
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.benefit-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.benefit-item strong {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.benefit-item p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

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

.featured-feature-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-base);
}

.featured-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.featured-feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.featured-feature-card h4 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

/* Features Section */
.features-section {
    padding: var(--spacing-2xl) 0;
}

.features-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.feature-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    background: white;
    padding: var(--spacing-xl);
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.feature-card.reverse {
    direction: rtl;
}

.feature-card.reverse > * {
    direction: ltr;
}

.feature-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.feature-image img {
    width: 100%;
    height: auto;
    max-height: 500px;
    display: block;
    transition: transform var(--transition-slow);
    object-fit: contain;
    border-radius: 16px;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: high-quality;
}

.feature-card:hover .feature-image img {
    transform: scale(1.05);
}

.feature-content h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.feature-content ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature-content li {
    color: var(--text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
    line-height: 1.7;
}

.feature-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

/* Detailed Features Section */
.detailed-features-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

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

.detailed-feature-category {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
}

.detailed-feature-category h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.detailed-feature-category ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.detailed-feature-category li {
    color: var(--text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
    line-height: 1.7;
    font-size: var(--font-size-sm);
}

.detailed-feature-category li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

/* Tools Section */
.tools-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.tools-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.tools-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.tools-section .section-title {
    color: white;
}

.tools-subtitle {
    font-size: var(--font-size-lg);
    margin: var(--spacing-md) auto 0;
    max-width: 800px;
    opacity: 0.95;
    line-height: 1.8;
}

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

.tool-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: 20px;
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.tool-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
}

.tool-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.tool-card p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    font-size: var(--font-size-sm);
}

/* Modules Section */
.modules-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

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

.module-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    text-align: center;
}

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

.module-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.module-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

/* Roadmap Section */
.roadmap-section {
    padding: var(--spacing-2xl) 0;
}

.roadmap-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: var(--spacing-xl);
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary), var(--primary-dark));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-2xl);
    padding-left: var(--spacing-xl);
}

.timeline-marker {
    position: absolute;
    left: -10px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: var(--shadow-md);
}

.timeline-marker.short-term {
    background: var(--primary);
}

.timeline-marker.medium-term {
    background: var(--secondary);
}

.timeline-marker.long-term {
    background: var(--primary-dark);
}

.timeline-content {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
}

.timeline-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.timeline-content ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.timeline-content li {
    color: var(--text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
    line-height: 1.7;
}

.timeline-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

/* Download Section */
.download-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    text-align: center;
}

.download-section .section-title {
    color: white;
}

.download-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

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

.download-buttons .btn-primary {
    background: white;
    color: var(--primary);
}

.download-buttons .btn-primary:hover {
    background: var(--bg-secondary);
}

.download-buttons .btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.download-buttons .btn-secondary:hover {
    background: white;
    color: var(--primary);
}

.download-info {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.info-icon {
    font-size: var(--font-size-lg);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: var(--spacing-2xl) 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: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.footer-author {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-sm);
}

.footer-author-name {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

.footer-author-name a {
    color: var(--primary);
    text-decoration: none;
}

.footer-author-name a:hover {
    text-decoration: underline;
}

.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-version {
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .featured-card-content {
        grid-template-columns: 1fr;
    }
    
    .feature-card,
    .feature-card.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }
    
    .detailed-features-grid {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: white;
        width: 100%;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
        transition: left var(--transition-base);
        gap: var(--spacing-md);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .why-grid,
    .modules-grid {
        grid-template-columns: 1fr;
    }
}