:root {
    --primary-color: #18181b;
    --secondary-color: #27272a;
    --accent-color: #a855f7;
    --text-color: #18181b;
    --light-text: #71717a;
    --bg-light: #fafafa;
    --bg-dark: #18181b;
    --white: #fff;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow);
    z-index: 100;
    padding: 15px 0;
    transition: all 0.3s ease;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo-container {
    display: flex;
    flex-direction: column;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-image {
    width: 32px;
    height: 32px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-white {
    font-size: 28px;
    font-weight: 700;
    color: var(--white);
}

.tagline {
    font-size: 14px;
    color: var(--light-text);
}

.nav-list {
    display: flex;
}

.nav-list li {
    margin-left: 30px;
}

.nav-list a {
    font-weight: 500;
    transition: color 0.3s;
}

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

.cta-button {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: var(--secondary-color);
}

.cta-button.secondary {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.cta-button.secondary:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.cta-button.large {
    padding: 15px 30px;
    font-size: 18px;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 2px 0;
    transition: all 0.3s;
}

main {
    margin-top: 70px;
}

.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4ecfb 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.hero-content h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    gap: 15px;
}

.hero-image img {
    width: 100%;
    height: auto;
    box-shadow: var(--shadow);
}

.slider {
    width: 100%;
    position: relative;
    box-shadow: var(--shadow);
}

.slider-track {
    display: flex;
    position: relative;
    height: 100%;
    transition: transform 0.5s ease;
}

.slide {
    flex: 0 0 100%;
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: opacity 0.5s ease;
}

.slide.active {
    opacity: 1;
    z-index: 1;
}

.slide img {
    width: 100%;
    height: auto;
    display: block;
}

.slider-nav {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 8px;
    z-index: 2;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background-color 0.3s;
}

.slider-dot.active {
    background-color: var(--accent-color);
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
}

.features {
    padding: 80px 0;
    background-color: var(--white);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.feature-card h3 {
    margin-bottom: 10px;
    font-size: 20px;
}

.badge {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--white);
    font-size: 12px;
    font-weight: 500;
    padding: 3px 8px;
    border-radius: 12px;
    margin-left: 8px;
    vertical-align: middle;
}

.how-it-works {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step {
    text-align: center;
    padding: 0 15px;
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step h3 {
    margin-bottom: 10px;
}

.testimonials {
    padding: 80px 0;
}

.testimonial-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.testimonial {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin: 0 auto;
    max-width: 700px;
    text-align: center;
}

.quote {
    font-size: 18px;
    font-style: italic;
    margin-bottom: 20px;
}

.author {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.name {
    font-weight: 500;
    font-size: 18px;
}

.rating {
    color: var(--light-text);
}

.slider-dots {
    text-align: center;
    margin-top: 20px;
}

.dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    background-color: #ddd;
    border-radius: 50%;
    margin: 0 5px;
    cursor: pointer;
}

.dot.active {
    background-color: var(--primary-color);
}

.open-source {
    padding: 80px 0;
    background-color: var(--white);
}

.open-source-content {
    align-items: center;
}

.open-source-text p {
    margin-bottom: 20px;
    font-size: 18px;
}

.repo-links {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: 30px 0;
}

.repo-link {
    display: flex;
    gap: 15px;
    padding: 20px;
    border-radius: 8px;
    background-color: var(--white);
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.repo-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.repo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
}

.repo-info h3 {
    margin-bottom: 5px;
    color: var(--primary-color);
}

.repo-info p {
    margin-bottom: 0;
    font-size: 16px;
    color: var(--light-text);
}

.open-source-cta {
    margin-top: 30px;
    padding: 25px;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.open-source-cta h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.contribution-list {
    margin: 15px 0 25px 20px;
}

.contribution-list li {
    margin-bottom: 10px;
    position: relative;
}

.contribution-list li::before {
    content: "•";
    color: var(--accent-color);
    font-weight: bold;
    position: absolute;
    left: -15px;
}

.open-source-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.cta-section {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .cta-button {
    background-color: var(--white);
    color: var(--primary-color);
}

.cta-section .cta-button:hover {
    background-color: var(--bg-light);
}

.footer {
    background-color: var(--bg-dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
}

.footer-title {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 15px;
}

.footer-column {
    flex: 1;
    min-width: 160px;
}

.main-column {
    flex: 2;
}

.footer-links {
    display: flex;
    gap: 40px;
    flex: 1;
}

.support-link {
    margin-top: 20px;
}

.social-links {
    display: flex;
    gap: 10px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: background-color 0.3s;
}

.social-icon:hover {
    background-color: var(--primary-color);
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-column ul li a:hover {
    opacity: 1;
}

.copyright {
    text-align: center;
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    opacity: 0.7;
}

.team-cta {
    margin-top: 30px;
}

.about-hero {
    padding: 60px 0;
    background-color: var(--bg-light);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 18px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.contact-hero {
    padding: 80px 0;
    background-color: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.contact-info h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.contact-info p {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 30px;
}

.contact-methods {
    margin-top: 40px;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    color: var(--accent-color);
}

.contact-details h4 {
    margin-bottom: 5px;
    color: var(--primary-color);
}

.contact-details a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.contact-details a:hover {
    color: var(--primary-color);
}

.contact-form-container {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.contact-form-container h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    font-weight: 500;
    color: var(--primary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    transition: border 0.3s;
}

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

.active {
    color: var(--accent-color) !important;
    font-weight: 500;
}

@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .hero-content {
        text-align: center;
        order: 1;
    }
    
    .hero-image {
        order: 0;
        margin-bottom: 30px;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .mobile-hidden {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
        display: none;
    }
    
    .nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-list li {
        margin: 10px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .hero-content h2 {
        font-size: 32px;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-5px);
    }
}