/* 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;
    background-color: #fff;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 2px;
}

.logo span {
    font-size: 12px;
    opacity: 0.9;
    letter-spacing: 1px;
}

.header-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.header-contact i {
    color: #fbbf24;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: #1e293b;
}

.hero-title .highlight {
    display: block;
    color: #3b82f6;
    font-size: 36px;
    margin-top: 8px;
}

.hero-subtitle {
    font-size: 20px;
    color: #64748b;
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-subtitle strong {
    color: #dc2626;
    font-weight: 600;
}

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

.benefit-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.benefit-item i {
    color: #3b82f6;
    font-size: 20px;
    width: 24px;
}

.benefit-item span {
    font-weight: 500;
    color: #374151;
}

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

.cta-primary, .cta-secondary {
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.cta-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.cta-secondary {
    background: white;
    color: #3b82f6;
    border: 2px solid #3b82f6;
}

.cta-secondary:hover {
    background: #3b82f6;
    color: white;
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
}

.smart-grid-demo {
    position: relative;
    width: 300px;
    height: 300px;
}

.grid-node {
    position: absolute;
    width: 120px;
    height: 80px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
    border: 2px solid #e2e8f0;
}

.grid-node.active {
    border-color: #3b82f6;
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.2);
}

.grid-node:nth-child(1) { top: 0; left: 50%; transform: translateX(-50%); }
.grid-node:nth-child(2) { top: 50%; left: 0; transform: translateY(-50%); }
.grid-node:nth-child(3) { bottom: 0; left: 50%; transform: translateX(-50%); }
.grid-node:nth-child(4) { top: 50%; right: 0; transform: translateY(-50%); }

.grid-node i {
    font-size: 24px;
    color: #3b82f6;
}

.grid-node span {
    font-size: 12px;
    font-weight: 500;
    color: #374151;
    text-align: center;
}

/* Trust Section */
.trust-section {
    background: white;
    padding: 60px 0;
    border-bottom: 1px solid #e2e8f0;
}

.trust-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.trust-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: #3b82f6;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: #64748b;
    font-weight: 500;
}

.certifications h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #1e293b;
}

.cert-badges {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.cert-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: #f8fafc;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.cert-badge i {
    color: #059669;
    font-size: 16px;
}

.cert-badge span {
    font-size: 14px;
    font-weight: 500;
    color: #374151;
}

/* Problem Solution Section */
.problem-solution {
    background: #f8fafc;
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: #64748b;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.problem-item {
    background: white;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.problem-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.problem-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.problem-icon i {
    font-size: 24px;
    color: #dc2626;
}

.problem-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 12px;
}

.problem-item p {
    color: #64748b;
    margin-bottom: 16px;
    line-height: 1.6;
}

.solution-preview {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: #f0f9ff;
    border-radius: 8px;
    border-left: 4px solid #3b82f6;
}

.solution-preview i {
    color: #3b82f6;
    font-size: 14px;
}

.solution-preview span {
    font-size: 14px;
    font-weight: 500;
    color: #1e40af;
}

/* Products Section */
.products-section {
    background: white;
    padding: 80px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.product-card {
    background: #f8fafc;
    padding: 40px;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    border-color: #3b82f6;
}

.product-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.product-icon i {
    font-size: 32px;
    color: white;
}

.product-card h3 {
    font-size: 24px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 16px;
}

.product-card p {
    color: #64748b;
    margin-bottom: 24px;
    line-height: 1.6;
}

.product-features {
    list-style: none;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: #374151;
}

.product-features i {
    color: #059669;
    font-size: 14px;
    width: 16px;
}

/* Applications Section */
.applications {
    background: #f8fafc;
    padding: 80px 0;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.app-item {
    background: white;
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.app-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    border-color: #3b82f6;
}

.app-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.app-icon i {
    font-size: 24px;
    color: #3b82f6;
}

.app-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 12px;
}

.app-item p {
    color: #64748b;
    font-size: 14px;
    line-height: 1.5;
}

/* Contact Form Section */
.contact-form-section {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    padding: 80px 0;
    color: white;
}

.form-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.form-info h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.form-info p {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.9;
    line-height: 1.6;
}

.form-benefits {
    display: grid;
    gap: 16px;
}

.benefit {
    display: flex;
    align-items: center;
    gap: 12px;
}

.benefit i {
    color: #fbbf24;
    font-size: 18px;
    width: 20px;
}

.benefit span {
    font-weight: 500;
}

.form-container {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.contact-form {
    display: grid;
    gap: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 500;
    color: #374151;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 14px;
    color: #64748b;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin: 0;
}

.submit-btn {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    padding: 16px 32px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.3);
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.footer-logo p {
    color: #94a3b8;
    margin-bottom: 24px;
}

.footer-contact {
    display: grid;
    gap: 12px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.contact-item i {
    color: #3b82f6;
    width: 16px;
}

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

.link-group h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: white;
}

.link-group ul {
    list-style: none;
    display: grid;
    gap: 8px;
}

.link-group a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.link-group a:hover {
    color: #3b82f6;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: #94a3b8;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-title .highlight {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-benefits {
        grid-template-columns: 1fr;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .trust-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .trust-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .problems-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .form-info h2 {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-title .highlight {
        font-size: 24px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .cta-primary, .cta-secondary {
        padding: 14px 24px;
        font-size: 14px;
    }
    
    .trust-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .applications-grid {
        grid-template-columns: 1fr;
    }
    
    .cert-badges {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    .form-info h2 {
        font-size: 24px;
    }
    
    .form-info p {
        font-size: 16px;
    }
}

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

.hero-title,
.hero-subtitle,
.hero-benefits,
.hero-cta {
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    animation-delay: 0.2s;
}

.hero-benefits {
    animation-delay: 0.4s;
}

.hero-cta {
    animation-delay: 0.6s;
}

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