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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    font-size: 16px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.content-wrapper {
    margin-top: 80px;
}

/* Typography */
h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: #1a365d;
}

h2 {
    font-size: 2.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #2d3748;
    border-bottom: 3px solid #3182ce;
    padding-bottom: 0.5rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2d3748;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #4a5568;
}

p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

/* Links */
a {
    text-decoration: none;
    transition: all 0.3s ease;
}

.keyword-link {
    color: #3182ce;
    font-weight: 600;
    border-bottom: 2px solid transparent;
}

.keyword-link:hover {
    border-bottom-color: #3182ce;
}

/* Header and Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-logo h2 {
    color: #3182ce;
    font-size: 1.5rem;
    margin: 0;
    border: none;
    padding: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: #4a5568;
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.nav-menu a:hover {
    color: #3182ce;
    border-bottom-color: #3182ce;
}

.cta-btn {
    background: #3182ce !important;
    color: white !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: 6px !important;
    border: none !important;
    font-weight: 600 !important;
}

.cta-btn:hover {
    background: #2c5282 !important;
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8rem 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="%23ffffff10"><polygon points="0,0 1000,0 1000,100 0,70"/></svg>') no-repeat bottom;
    background-size: cover;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.hero h1 {
    color: white;
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 6px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: #e53e3e;
    color: white;
    border-color: #e53e3e;
}

.btn-primary:hover {
    background: #c53030;
    border-color: #c53030;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(229, 62, 62, 0.4);
}

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

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

/* Content Sections */
.content-section {
    padding: 4rem 0;
}

.bg-light {
    background: #f7fafc;
}

.intro-section {
    padding: 3rem 0;
    background: white;
}

.intro-text {
    font-size: 1.125rem;
    line-height: 1.8;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    color: #4a5568;
}

/* Compressor Types */
.compressor-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.type-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-left: 4px solid #3182ce;
    transition: all 0.3s ease;
}

.type-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.type-card h4 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #3182ce;
    margin-bottom: 1rem;
}

.type-card i {
    font-size: 1.5rem;
}

/* Benefits Grid */
.benefit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.benefit-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.benefit-item i {
    font-size: 3rem;
    color: #3182ce;
    margin-bottom: 1rem;
}

.cost-benefits ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    list-style: none;
}

.cost-benefits li {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-left: 4px solid #48bb78;
}

.cost-benefits li strong {
    color: #2f855a;
}

/* Industry Grid */
.industry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.industry-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.industry-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.industry-card i {
    font-size: 3rem;
    color: #e53e3e;
    margin-bottom: 1rem;
}

.industry-card h3 {
    color: #2d3748;
    margin-bottom: 1rem;
}

.industry-card ul {
    list-style-position: inside;
    color: #4a5568;
}

.industry-card li {
    margin-bottom: 0.5rem;
}

/* Sizing Guide */
.sizing-guide {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.sizing-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    text-align: center;
    border-top: 4px solid #9f7aea;
}

.sizing-card h4 {
    color: #9f7aea;
    margin-bottom: 1rem;
}

/* Comparison Table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-radius: 12px;
    overflow: hidden;
}

.comparison-table thead {
    background: #3182ce;
    color: white;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.comparison-table tbody tr:hover {
    background: #f7fafc;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.product-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-top: 4px solid #ed8936;
}

.product-card h4 {
    color: #ed8936;
    margin-bottom: 1rem;
}

/* Energy Features */
.energy-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.feature-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    text-align: center;
}

.feature-item i {
    font-size: 2.5rem;
    color: #48bb78;
    margin-bottom: 1rem;
}

/* Service Grid */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.service-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.service-item i {
    font-size: 2.5rem;
    color: #3182ce;
    margin-bottom: 1rem;
}

.service-item ul {
    color: #4a5568;
}

.service-item li {
    margin-bottom: 0.5rem;
}

/* FAQ Grid */
.faq-grid {
    display: grid;
    gap: 1.5rem;
    margin: 2rem 0;
}

.faq-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-left: 4px solid #9f7aea;
}

.faq-item h3 {
    color: #2d3748;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.faq-item p {
    color: #4a5568;
    margin-bottom: 0;
}

/* Why Choose Us */
.why-choose-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.choose-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    text-align: center;
}

.choose-item i {
    font-size: 3rem;
    color: #e53e3e;
    margin-bottom: 1rem;
}

/* Testimonial */
.testimonial {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    margin: 3rem 0;
    text-align: center;
    border-left: 4px solid #48bb78;
}

.testimonial blockquote {
    font-size: 1.125rem;
    font-style: italic;
    color: #4a5568;
    margin-bottom: 1rem;
}

.testimonial cite {
    font-weight: 600;
    color: #2d3748;
}

/* Contact Section */
.contact-section {
    background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
    color: white;
}

.contact-section h2 {
    color: white;
    border-bottom-color: #48bb78;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin: 3rem 0;
}

.contact-info h3 {
    color: white;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item i {
    font-size: 1.25rem;
    color: #48bb78;
    margin-top: 0.25rem;
}

.contact-item strong {
    display: block;
    margin-bottom: 0.25rem;
}

/* Contact Form */
.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.contact-form h3 {
    color: #2d3748;
    margin-bottom: 1.5rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3182ce;
}

/* Footer */
footer {
    background: #1a202c;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

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

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

.footer-section ul li a {
    color: #a0aec0;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #48bb78;
}

.footer-section p {
    color: #a0aec0;
    margin-bottom: 0.5rem;
}

.footer-section i {
    color: #48bb78;
    margin-right: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid #2d3748;
    padding-top: 1rem;
    text-align: center;
    color: #a0aec0;
}

.footer-bottom a {
    color: #48bb78;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 1.875rem;
    }
    
    .content-section {
        padding: 2rem 0;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .comparison-table {
        font-size: 0.875rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .nav-container {
        padding: 0.75rem 15px;
    }
    
    .nav-logo h2 {
        font-size: 1.25rem;
    }
    
    .content-section {
        padding: 1.5rem 0;
    }
}

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

.content-section {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading States */
.form-group button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Accessibility */
:focus {
    outline: 2px solid #3182ce;
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .navbar,
    .hero-cta,
    .contact-section,
    footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3, h4 {
        page-break-after: avoid;
    }
}