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

:root {
    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --secondary-color: #f59e0b;
    --accent-color: #10b981;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --background-light: #f9fafb;
    --white: #ffffff;
    --error-color: #dc2626;
    --success-color: #059669;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    font-size: 16px;
}

/* Accessibility and Focus States */
*:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 0.5rem 1rem;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    z-index: 2000;
    border-radius: 4px;
    top: 1rem;
    left: 1rem;
}

/* Skip Navigation */
.skip-nav {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 2000;
    background: var(--primary-color);
    color: var(--white);
    padding: 0.75rem 1rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    transform: translateY(-100px);
    transition: transform 0.3s ease;
}

.skip-nav:focus {
    transform: translateY(0);
}

/* Header and Navigation */
.header {
    background: var(--white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    position: relative;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    z-index: 1001;
}

.nav-menu {
    display: none;
    list-style: none;
    gap: 2rem;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 2rem 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 999;
}

.nav-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    font-size: 1.5rem;
    color: var(--text-primary);
    z-index: 1001;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
}

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

.cta-button {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.2s ease;
    display: inline-block;
    z-index: 1001;
}

.cta-button:hover,
.cta-button:focus {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* Main Content */
.main-content {
    margin-top: 70px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 4rem 1rem;
    text-align: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Services Section */
.services {
    padding: 4rem 1rem;
    background: var(--background-light);
}

.services-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* Contact Form Section */
.contact-form-section {
    padding: 4rem 1rem;
    background: var(--white);
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: var(--white);
}

.form-input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.form-input:invalid {
    border-color: var(--error-color);
}

.error-message {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.checkbox-input {
    margin-top: 0.125rem;
    transform: scale(1.2);
}

.checkbox-label {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.submit-button {
    width: 100%;
    background: var(--primary-color);
    color: var(--white);
    padding: 1rem 2rem;
    border: none;
    border-radius: 6px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

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

.submit-button:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
}

/* Testimonials Section */
.testimonials {
    padding: 4rem 1rem;
    background: var(--background-light);
}

.testimonials-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    position: relative;
}

.testimonial-quote {
    font-size: 1.125rem;
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    color: var(--text-primary);
}

.testimonial-author {
    font-weight: 600;
    color: var(--primary-color);
}

.testimonial-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.trust-badges {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.trust-badge {
    background: var(--white);
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: var(--white);
    padding: 3rem 1rem 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-section p,
.footer-section a {
    color: #d1d5db;
    text-decoration: none;
    line-height: 1.6;
}

.footer-section a:hover,
.footer-section a:focus {
    color: var(--white);
    text-decoration: underline;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid #4b5563;
    padding-top: 1rem;
    text-align: center;
    font-size: 0.9rem;
    color: #9ca3af;
}

/* Responsive Design */
@media (min-width: 640px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .nav-menu {
        position: static;
        display: flex;
        flex-direction: row;
        background: none;
        box-shadow: none;
        transform: none;
        padding: 0;
        top: auto;
        left: auto;
        right: auto;
    }
    
    .nav-toggle {
        display: none;
    }
    
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .hero p {
        font-size: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000080;
        --text-primary: #000000;
        --text-secondary: #333333;
    }
    
    .form-input {
        border-width: 3px;
    }
    
    .service-card,
    .testimonial-card {
        border: 2px solid #000000;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}