:root {
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    --color-accent: #4a5568;
    --color-accent-dark: #2d3748;
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s ease;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--color-gray-700);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-gray-900);
}

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

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-gray-900);
}

.logo img {
    border-radius: 8px;
}

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

.nav-links a {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-gray-600);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-gray-800);
    transition: width var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--color-gray-800);
    color: var(--color-white);
}

.btn-primary:hover {
    background: var(--color-gray-900);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.btn-secondary:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-800);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-gray-300);
    color: var(--color-gray-700);
}

.btn-outline:hover {
    border-color: var(--color-gray-400);
    background: var(--color-gray-50);
}

.btn-full {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

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

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
    margin-bottom: 24px;
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: 32px;
    max-width: 500px;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

#particles-js {
    width: 100%;
    height: 400px;
    background: transparent;
}

/* Section Styles */
section {
    padding: 100px 0;
}

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

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 16px;
}

.divider {
    width: 60px;
    height: 3px;
    background: var(--color-gray-300);
    margin: 0 auto 20px;
    border-radius: 2px;
}

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

/* About Section */
.about {
    background: var(--color-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: var(--color-gray-50);
    border-radius: 12px;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-gray-800);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

/* Products Section */
.products {
    background: var(--color-gray-50);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.product-card {
    background: var(--color-white);
    border-radius: 16px;
    padding: 40px;
    position: relative;
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition);
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.product-card.featured {
    border-color: var(--color-gray-300);
}

.product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--color-gray-800);
    color: var(--color-white);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.product-icon {
    width: 64px;
    height: 64px;
    background: var(--color-gray-100);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.product-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--color-gray-700);
}

.product-icon-image {
    background: transparent;
    overflow: hidden;
}

.product-icon-image img {
    width: 56px;
    height: 56px;
    object-fit: contain;
    border-radius: 8px;
}

.product-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 8px;
}

.product-tagline {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    margin-bottom: 16px;
    font-weight: 500;
}

.product-card > p:not(.product-tagline) {
    color: var(--color-gray-600);
    margin-bottom: 20px;
}

.product-features {
    list-style: none;
    margin-bottom: 28px;
}

.product-features li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--color-gray-600);
    font-size: 0.95rem;
}

.product-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-gray-300);
}

/* Services Section */
.services {
    background: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    padding: 32px 24px;
    text-align: center;
    border-radius: 12px;
    background: var(--color-gray-50);
    transition: all var(--transition);
}

.service-card:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--color-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: var(--shadow-sm);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-gray-600);
}

.service-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    line-height: 1.6;
}

/* Tech Stack */
.tech-stack {
    background: var(--color-gray-50);
    padding: 80px 0;
}

.tech-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
}

.tech-item {
    width: 72px;
    height: 72px;
    background: var(--color-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.tech-item img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all var(--transition);
}

.tech-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* Contact Section */
.contact {
    background: var(--color-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
}

.contact-centered {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
}

.contact-centered .contact-info {
    text-align: center;
    align-items: center;
}

.contact-centered .info-item {
    justify-content: center;
}

.info-row {
    display: flex;
    gap: 48px;
    justify-content: center;
    flex-wrap: wrap;
}

.info-row .info-item {
    margin-bottom: 0;
}

.contact-centered .btn {
    margin-top: 24px;
}

.contact-form {
    background: var(--color-gray-50);
    padding: 40px;
    border-radius: 16px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-family: var(--font-family);
    font-size: 0.95rem;
    border: 1px solid var(--color-gray-200);
    border-radius: 8px;
    background: var(--color-white);
    color: var(--color-gray-700);
    transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-gray-400);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 32px;
}

.info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.info-item svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-gray-500);
    flex-shrink: 0;
    margin-top: 4px;
}

.info-item strong {
    display: block;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: 4px;
}

.info-item span,
.info-item a {
    color: var(--color-gray-600);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 16px;
    margin-top: 16px;
}

.social-link {
    width: 44px;
    height: 44px;
    background: var(--color-gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.social-link:hover {
    background: var(--color-gray-800);
}

.social-link svg {
    width: 20px;
    height: 20px;
    fill: var(--color-gray-600);
    transition: fill var(--transition);
}

.social-link:hover svg {
    fill: var(--color-white);
}

/* Footer */
.footer {
    background: var(--color-gray-900);
    padding: 48px 0;
}

.footer-content {
    text-align: center;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-brand img {
    border-radius: 8px;
}

.footer-brand span {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-white);
}

.footer-legal {
    color: var(--color-gray-400);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.footer-copyright {
    color: var(--color-gray-500);
    font-size: 0.85rem;
}

/* Mobile Responsive */
@media (max-width: 992px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 24px;
        gap: 0;
        border-bottom: 1px solid var(--color-gray-100);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        padding: 12px 0;
        border-bottom: 1px solid var(--color-gray-100);
    }
    
    .nav-links li:last-child {
        border-bottom: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .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);
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.25rem;
    }
    
    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    #particles-js {
        height: 280px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .tech-logos {
        gap: 24px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-content h1 {
        font-size: 1.875rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .product-card {
        padding: 28px;
    }
    
    .contact-form {
        padding: 24px;
    }
}