/* Reset y configuración base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --text-dark: #1e293b;
    --text-light: #475569;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

html {
    scroll-behavior: smooth;
}

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

/* Header y Navegación */
.header {
    background-color: var(--bg-white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.nav-menu a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--bg-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

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

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
    line-height: 1.6;
}

.btn-primary {
    display: inline-block;
    background-color: var(--bg-white);
    color: var(--primary-color);
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

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

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.section-intro {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    text-align: center;
}

.section-intro p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.vision-statement {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: #f1f5f9;
    border-left: 4px solid var(--primary-color);
    border-radius: 0.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.vision-statement p {
    font-size: 1.125rem;
    color: var(--text-dark);
    line-height: 1.7;
    margin: 0;
}

.section-description {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.feature-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

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

/* Process Steps */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.step {
    text-align: center;
    padding: var(--spacing-md);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
}

.step h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.step p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Integration Grid */
.integration-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.integration-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 0.75rem;
    border: 2px solid var(--border-color);
    transition: border-color 0.3s ease;
}

.integration-card:hover {
    border-color: var(--primary-color);
}

.integration-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.integration-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Use Cases */
.use-cases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.use-case {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary-color);
}

.use-case h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.use-case p {
    color: var(--text-light);
    line-height: 1.6;
}

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

.channel {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-white);
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

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

.channel h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.channel p {
    color: var(--text-light);
    line-height: 1.6;
}

.communication-note {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    border-radius: 0.5rem;
}

.communication-note p {
    color: var(--text-dark);
    line-height: 1.7;
}

/* Cost Benefit Note */
.cost-benefit-note {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: #ecfdf5;
    border-left: 4px solid #10b981;
    border-radius: 0.5rem;
}

.cost-benefit-note h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.cost-benefit-note p {
    color: var(--text-dark);
    line-height: 1.8;
    font-size: 1rem;
}

/* Sustainability Section */
.sustainability-content {
    max-width: 900px;
    margin: 0 auto;
}

.digital-docs-note {
    margin: var(--spacing-md) 0 var(--spacing-lg);
    padding: var(--spacing-md);
    background: #eff6ff;
    border-left: 4px solid var(--primary-color);
    border-radius: 0.5rem;
}

.digital-docs-note p {
    color: var(--text-dark);
    line-height: 1.7;
    font-size: 1rem;
}

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

.benefit-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-white);
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

.benefit-item h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.benefit-item p {
    color: var(--text-light);
    line-height: 1.6;
}

.sustainability-statement {
    text-align: center;
    padding: var(--spacing-md);
    background: #d1fae5;
    border-left: 4px solid #10b981;
    border-radius: 0.5rem;
}

.sustainability-statement p {
    color: var(--text-dark);
    font-size: 1.125rem;
    line-height: 1.7;
}

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

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--bg-white);
}

.footer-section p,
.footer-section li {
    color: #94a3b8;
    line-height: 1.8;
}

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

.footer-section a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid #334155;
}

.footer-bottom p {
    color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid,
    .integration-grid,
    .use-cases,
    .channels {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Legal Content */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: var(--spacing-lg);
}

.legal-section h2 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--border-color);
}

.legal-section p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.legal-section ul {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.legal-section li {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-xs);
}

.legal-section strong {
    color: var(--text-dark);
    font-weight: 600;
}

.legal-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--border-color);
    text-align: center;
}

.legal-footer p {
    color: var(--text-light);
    margin-bottom: var(--spacing-xs);
}

.legal-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

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

/* Accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Smooth transitions */
a,
button,
.feature-card,
.integration-card {
    transition: all 0.3s ease;
}