/* Helio Swiss Slovakia - Modern Solar Energy CSS */
:root {
    /* Slovak-inspired color palette */
    --primary-color: #0057B7; /* Slovak blue */
    --secondary-color: #DC143C; /* Slovak red */
    --accent-color: #FFD700; /* Gold for solar theme */
    --success-color: #28a745;
    --warning-color: #ffc107;
    
    /* Modern neutral colors */
    --dark-gray: #1a1a1a;
    --medium-gray: #4a5568;
    --light-gray: #f7fafc;
    --white: #ffffff;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    
    /* Modern gradients */
    --primary-gradient: linear-gradient(135deg, #0057B7 0%, #003d82 100%);
    --accent-gradient: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    --card-gradient: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    
    /* Spacing and shadows */
    --border-radius: 12px;
    --border-radius-lg: 24px;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --box-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-semibold);
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
    box-shadow: var(--box-shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(0, 87, 183, 0.4);
}

.btn-secondary {
    background: var(--accent-gradient);
    color: var(--dark-gray);
    box-shadow: var(--box-shadow);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(255, 215, 0, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* Header and Navigation */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 87, 183, 0.1);
    transition: var(--transition);
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-logo h2 {
    color: var(--primary-color);
    margin: 0;
    font-size: 1.8rem;
}

.company-badge {
    background: var(--accent-gradient);
    color: var(--dark-gray);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.cta-button-nav {
    background: var(--primary-gradient);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition);
}

.cta-button-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(0, 87, 183, 0.4);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-slovakia.jpg') center/cover;
    opacity: 0.1;
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: 3.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.hero-text h2 {
    color: var(--secondary-color);
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
    border: 2px solid transparent;
    transition: var(--transition);
}

.stat:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
}

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

.image-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-gradient);
    color: var(--dark-gray);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Company Overview */
.company-overview {
    background: var(--primary-color);
    color: var(--white);
    padding: 3rem 0;
}

.overview-box {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.overview-box i {
    font-size: 3rem;
    color: var(--accent-color);
}

.overview-box h3 {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.overview-box p {
    color: rgba(255, 255, 255, 0.9);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Services Section */
.services {
    padding: 5rem 0;
    background: var(--light-gray);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-lg);
    border-color: var(--primary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon i {
    font-size: 2rem;
    color: var(--white);
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-card ul {
    list-style: none;
    margin-top: 1rem;
}

.service-card li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.service-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: var(--font-weight-bold);
}

/* Technology Section */
.technology {
    padding: 5rem 0;
    background: var(--white);
}

.tech-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.tech-text h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.tech-text h3 {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.tech-features {
    margin: 2rem 0;
}

.tech-feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--light-gray);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.tech-feature:hover {
    background: var(--white);
    box-shadow: var(--box-shadow);
}

.tech-feature i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-top: 0.5rem;
}

.tech-feature h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.tech-highlight {
    background: var(--accent-gradient);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    margin-top: 2rem;
    color: var(--dark-gray);
}

.tech-highlight h4 {
    color: var(--dark-gray);
    margin-bottom: 1rem;
}

.tech-image {
    position: relative;
}

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

.tech-badge {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    background: var(--white);
    color: var(--primary-color);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--box-shadow);
}

/* Benefits Section */
.benefits {
    padding: 5rem 0;
    background: var(--light-gray);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.benefit-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 2px solid transparent;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-lg);
    border-color: var(--primary-color);
}

.benefit-icon {
    width: 70px;
    height: 70px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.benefit-icon i {
    font-size: 1.8rem;
    color: var(--white);
}

.benefit-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.benefit-card ul {
    list-style: none;
    margin-top: 1rem;
}

.benefit-card li {
    padding: 0.3rem 0;
    color: var(--text-secondary);
}

/* Process Section */
.process {
    padding: 5rem 0;
    background: var(--white);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    margin: 0 auto 1.5rem;
    box-shadow: var(--box-shadow);
}

.step-content h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.process-cta {
    text-align: center;
}

/* FAQ Section */
.faq {
    padding: 5rem 0;
    background: var(--light-gray);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--light-gray);
}

.faq-question h3 {
    color: var(--primary-color);
    margin: 0;
    font-size: 1.1rem;
}

.faq-question i {
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 200px;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background: var(--primary-color);
    color: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact h2 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.contact p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.contact-features {
    margin: 2rem 0;
}

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

.contact-feature i {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-top: 0.5rem;
}

.contact-feature h4 {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.contact-feature p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.contact-cta {
    margin-top: 2rem;
}

.contact-cta .btn {
    margin-right: 1rem;
    margin-bottom: 1rem;
}

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

/* Footer */
.footer {
    background: var(--dark-gray);
    color: var(--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 {
    color: var(--white);
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--accent-color);
}

.footer-company {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    align-items: center;
}

.footer-legal p,
.footer-quality p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .tech-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .contact-cta .btn {
        margin-right: 0;
    }
    
    .footer-bottom {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-text h2 {
        font-size: 1.5rem;
    }
    
    .services-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling and transitions */
.section {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}