/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-green: #10B981;
    --primary-green-dark: #059669;
    --secondary-blue: #3B82F6;
    --neutral-900: #111827;
    --neutral-800: #1F2937;
    --neutral-700: #374151;
    --neutral-600: #4B5563;
    --neutral-500: #6B7280;
    --neutral-400: #9CA3AF;
    --neutral-300: #D1D5DB;
    --neutral-200: #E5E7EB;
    --neutral-100: #F3F4F6;
    --neutral-50: #F9FAFB;
    --white: #FFFFFF;
    --spacing-unit: 8px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--neutral-800);
    background-color: var(--white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }

p {
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--neutral-600);
}

/* Layout utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
}

/* Header */
.header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand h1 {
    color: var(--primary-green);
    font-size: 1.5rem;
    margin: 0;
}

.nav-links {
    display: flex;
    gap: calc(var(--spacing-unit) * 4);
}

.nav-links a {
    text-decoration: none;
    color: var(--neutral-700);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero section */
.hero {
    padding: calc(var(--spacing-unit) * 10) calc(var(--spacing-unit) * 3);
    background: linear-gradient(135deg, var(--neutral-50) 0%, var(--neutral-100) 100%);
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing-unit) * 8);
    align-items: center;
}

.hero-text h2 {
    font-size: 3rem;
    color: var(--neutral-900);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--primary-green);
    font-weight: 500;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.hero-text p {
    font-size: 1.125rem;
    margin-bottom: calc(var(--spacing-unit) * 4);
    color: var(--neutral-600);
}

.cta-button {
    display: inline-block;
    background: var(--primary-green);
    color: var(--white);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    background: var(--primary-green-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Benefits section */
.benefits {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: var(--white);
}

.benefits h2 {
    text-align: center;
    color: var(--neutral-900);
    margin-bottom: calc(var(--spacing-unit) * 8);
    font-size: 2.5rem;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    margin-top: calc(var(--spacing-unit) * 6);
}

.benefit-card {
    background: var(--white);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--neutral-200);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-green);
}

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

.benefit-card h3 {
    color: var(--neutral-900);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.benefit-card p {
    color: var(--neutral-600);
    margin-bottom: 0;
}

/* Testimonials section */
.testimonials {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: var(--neutral-50);
}

.testimonials h2 {
    text-align: center;
    color: var(--neutral-900);
    margin-bottom: calc(var(--spacing-unit) * 8);
    font-size: 2.5rem;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-4px);
}

.testimonial-content {
    padding: calc(var(--spacing-unit) * 4);
}

.testimonial-content blockquote {
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--neutral-700);
    margin-bottom: calc(var(--spacing-unit) * 4);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author cite {
    font-weight: 600;
    color: var(--neutral-900);
    font-style: normal;
    display: block;
}

.testimonial-author span {
    color: var(--neutral-500);
    font-size: 0.875rem;
}

/* Contact section */
.contact {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing-unit) * 8);
    align-items: start;
}

.contact-info h2 {
    color: var(--neutral-900);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.contact-info p {
    font-size: 1.125rem;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.contact-info img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form {
    background: var(--neutral-50);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    color: var(--neutral-900);
    margin-bottom: calc(var(--spacing-unit) * 4);
    text-align: center;
}

.form-group {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.form-group label {
    display: block;
    margin-bottom: calc(var(--spacing-unit) * 1);
    color: var(--neutral-700);
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: calc(var(--spacing-unit) * 1.5);
    border: 1px solid var(--neutral-300);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: calc(var(--spacing-unit) * 1);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-top: 2px;
    flex-shrink: 0;
}

.checkbox-group label {
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--neutral-600);
}

.checkbox-group a {
    color: var(--primary-green);
    text-decoration: none;
}

.checkbox-group a:hover {
    text-decoration: underline;
}

.submit-button {
    width: 100%;
    background: var(--primary-green);
    color: var(--white);
    padding: calc(var(--spacing-unit) * 2);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-button:hover {
    background: var(--primary-green-dark);
    transform: translateY(-1px);
}

/* Footer */
.footer {
    background: var(--neutral-900);
    color: var(--neutral-300);
    padding: calc(var(--spacing-unit) * 6) 0 calc(var(--spacing-unit) * 3) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: calc(var(--spacing-unit) * 6);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.footer-brand h4 {
    color: var(--primary-green);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.footer-brand p {
    color: var(--neutral-400);
    margin-bottom: 0;
}

.footer-links h5,
.footer-contact h5 {
    color: var(--white);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

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

.footer-links li {
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.footer-links a {
    color: var(--neutral-400);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-green);
}

.footer-contact p {
    color: var(--neutral-400);
    margin-bottom: 0;
}

.footer-bottom {
    border-top: 1px solid var(--neutral-700);
    padding-top: calc(var(--spacing-unit) * 3);
    text-align: center;
}

.footer-bottom p {
    color: var(--neutral-500);
    margin-bottom: 0;
    font-size: 0.875rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 2);
        padding: calc(var(--spacing-unit) * 3);
    }
    
    .nav-links {
        gap: calc(var(--spacing-unit) * 3);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 6);
        text-align: center;
    }
    
    .hero-text h2 {
        font-size: 2.5rem;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 3);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 3);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 6);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 4);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 3);
    }
    
    .hero-text h2 {
        font-size: 2rem;
    }
    
    .benefits,
    .testimonials,
    .contact {
        padding: calc(var(--spacing-unit) * 6) 0;
    }
    
    .benefits h2,
    .testimonials h2 {
        font-size: 2rem;
    }
    
    .benefit-card,
    .contact-form {
        padding: calc(var(--spacing-unit) * 3);
    }
}

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

.hero-text,
.hero-image {
    animation: fadeInUp 0.6s ease-out;
}

.benefit-card {
    animation: fadeInUp 0.6s ease-out;
}

.testimonial-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Focus states for accessibility */
a:focus,
button:focus,
input:focus,
select:focus {
    outline: 2px solid var(--primary-green);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .footer {
        display: none;
    }
    
    .hero,
    .benefits,
    .testimonials,
    .contact {
        page-break-inside: avoid;
    }
}