/* ============================================
   HeatENE Website Styles
   Brand Color: #f15a29 (Orange)
   Font: Poppins
   ============================================ */

:root {
    --primary: #f15a29;
    --primary-dark: #d94a1e;
    --primary-light: #ff7a4d;
    --dark: #1a1a2e;
    --gray-900: #212529;
    --gray-700: #495057;
    --gray-500: #6c757d;
    --gray-300: #dee2e6;
    --gray-100: #f8f9fa;
    --white: #ffffff;
    
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s ease;
    --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(0,0,0,0.12);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============ Typography ============ */

h1, h2, h3, h4, h5, h6 {
    color: var(--gray-900);
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.5rem; }

.highlight {
    color: var(--primary);
}

/* ============ Buttons ============ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

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

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1.1rem;
}

/* ============ Navigation ============ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-100);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo img {
    height: 36px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: var(--transition);
}

/* ============ Hero ============ */

.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-content {
    padding: 60px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-500);
    margin: 24px 0 40px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image {
    height: 100%;
    position: relative;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============ Stats Bar ============ */

.stats-bar {
    background: var(--dark);
    color: var(--white);
    padding: 48px 0;
}

.stats-bar .container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ============ Sections ============ */

.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--gray-100);
}

.section-title {
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-500);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 60px;
}

.disclaimer {
    text-align: center;
    color: var(--gray-500);
    font-size: 0.85rem;
    font-style: italic;
    max-width: 600px;
    margin: -40px auto 40px;
}

/* ============ Steps ============ */

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.step {
    text-align: center;
    padding: 32px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 24px;
}

.step h3 {
    margin-bottom: 16px;
}

/* ============ Thermal Section ============ */

.thermal-section {
    background: var(--dark);
    color: var(--white);
}

.thermal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.thermal-content h2 {
    color: var(--white);
    margin-bottom: 20px;
}

.thermal-content p {
    color: var(--gray-300);
    font-size: 1.1rem;
    margin-bottom: 24px;
}

.thermal-stats {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.thermal-stats li {
    padding: 16px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
}

.thermal-stats strong {
    display: block;
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 4px;
}

@media (max-width: 768px) {
    .thermal-grid {
        grid-template-columns: 1fr;
    }
    
    .thermal-stats {
        grid-template-columns: 1fr;
    }
}

/* ============ Benefits ============ */

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.benefit {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}

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

.benefit-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.benefit h3 {
    margin-bottom: 12px;
}

/* ============ Product ============ */

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.product-details h3 {
    font-size: 2rem;
    margin-bottom: 24px;
}

.product-specs {
    list-style: none;
    margin-bottom: 32px;
}

.product-specs li {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-300);
}

.product-specs li:last-child {
    border-bottom: none;
}

/* ============ Comparison Table ============ */

.comparison-table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.comparison-table th,
.comparison-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--gray-100);
}

.comparison-table th {
    background: var(--gray-100);
    font-weight: 600;
    color: var(--gray-900);
}

.comparison-table th.highlight,
.comparison-table td.highlight {
    background: var(--primary);
    color: var(--white);
}

.comparison-table tbody tr:hover {
    background: var(--gray-100);
}

.comparison-table tbody tr:hover td.highlight {
    background: var(--primary-dark);
}

/* ============ CTA Section ============ */

.cta-section {
    background: var(--primary);
    color: var(--white);
    text-align: center;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ============ Footer ============ */

.footer {
    background: var(--dark);
    color: var(--gray-300);
    padding: 80px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand img {
    margin-bottom: 16px;
}

.footer-brand p {
    opacity: 0.8;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--white);
    margin-bottom: 20px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color var(--transition);
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    opacity: 0.6;
}

/* ============ Responsive ============ */

@media (max-width: 992px) {
    .hero {
        grid-template-columns: 1fr;
    }
    
    .hero-content {
        padding: 40px;
        text-align: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-image {
        height: 400px;
    }
    
    .steps,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .product-showcase {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .stats-bar .container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .comparison-table {
        font-size: 0.9rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 12px;
    }
}

/* Mobile Nav Open */
.nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 24px;
    box-shadow: var(--shadow-md);
    gap: 16px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 480px) {
    .hero-content {
        padding: 24px;
    }
    
    .btn-large {
        width: 100%;
    }
    
    .hero-cta {
        flex-direction: column;
    }
}

/* Made in USA Badge */
.made-in-usa {
    display: inline-block;
    background: linear-gradient(135deg, #002868 0%, #bf0a30 100%);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
}

.made-usa-footer {
    font-size: 0.85rem;
    margin-top: 12px;
    opacity: 0.9;
}

/* ============ Lead Capture Form ============ */

.lead-capture {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 60px 0;
}

.lead-box {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.lead-box h3 {
    font-size: 2rem;
    margin-bottom: 12px;
}

.lead-box > p {
    color: var(--gray-500);
    margin-bottom: 32px;
}

.lead-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.lead-form input,
.lead-form select {
    padding: 16px 20px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color var(--transition);
}

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

.lead-form .btn {
    margin-top: 8px;
}

.form-note {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-top: 16px;
}

/* ============ Trust Badges ============ */

.trust-badges {
    background: var(--gray-100);
    padding: 24px 0;
    overflow-x: auto;
}

.badges {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--gray-700);
    white-space: nowrap;
    padding: 12px 20px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
    .badges {
        justify-content: flex-start;
        flex-wrap: nowrap;
        gap: 16px;
        padding: 0 16px;
    }
    
    .trust-badges {
        -webkit-overflow-scrolling: touch;
    }
}

/* ============ Testimonials ============ */

.testimonials {
    background: var(--white);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial {
    background: var(--gray-100);
    padding: 32px;
    border-radius: var(--radius-lg);
    position: relative;
}

.testimonial::before {
    content: '"';
    position: absolute;
    top: 16px;
    left: 24px;
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.2;
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-text {
    font-style: italic;
    color: var(--gray-700);
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    font-weight: 600;
    color: var(--gray-900);
    font-size: 0.9rem;
}

@media (max-width: 992px) {
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
}

/* ============ FAQ Section ============ */

.faq-section {
    background: var(--gray-100);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.faq-item {
    background: var(--white);
    padding: 28px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}

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

.faq-item h4 {
    color: var(--gray-900);
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.faq-item p {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

/* ============ Gallery Section ============ */

.gallery-section {
    background: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 40px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    aspect-ratio: 4/3;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}

.gallery-item:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

@media (max-width: 992px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

/* ============ Floating CTA ============ */

.floating-cta {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    box-shadow: var(--shadow-lg);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(241, 90, 41, 0.4);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(241, 90, 41, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(241, 90, 41, 0);
    }
}

.floating-cta:hover {
    animation: none;
    transform: translateY(-4px);
}

@media (max-width: 480px) {
    .floating-cta {
        bottom: 16px;
        right: 16px;
        left: 16px;
        text-align: center;
    }
    
    .lead-box {
        padding: 32px 24px;
    }
}