html {
    scroll-behavior: smooth;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    font-size: 1.8rem;
    font-weight: bold;
    color: #4a5568;
    text-decoration: none;
    transition: color 0.3s;
}

.logo:hover {
    color: #667eea;
}

.logo span {
    margin-right: 0.5rem;
    font-size: 2rem;
}

nav a {
    color: #4a5568;
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #667eea;
}

.hero {
    padding: 4rem 0 6rem;
    text-align: center;
    color: white;
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6)), url('img/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
}

.hero-content {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: 2px solid transparent;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: white;
    color: #667eea;
}

.btn-primary:hover {
    background: #f7fafc;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: white;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

.features {
    background: white;
    padding: 6rem 0;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2d3748;
}

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

.feature {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.feature p {
    color: #4a5568;
}

.open-hardware {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
}

.open-hardware h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
}

.open-hardware-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.open-hardware-text h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #e2e8f0;
}

.open-hardware-text p {
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.7;
}

.open-hardware-text ul {
    margin: 1.5rem 0;
    padding-left: 0;
    list-style: none;
}

.open-hardware-text li {
    margin: 1rem 0;
    padding: 0.5rem 0;
    opacity: 0.9;
}

.open-hardware-benefits {
    display: grid;
    gap: 1.5rem;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.benefit-item span {
    font-size: 2rem;
    flex-shrink: 0;
}

.benefit-item h4 {
    margin: 0 0 0.5rem 0;
    color: #e2e8f0;
}

.benefit-item p {
    margin: 0;
    opacity: 0.8;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .open-hardware-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.specs {
    background: #f7fafc;
    padding: 6rem 0;
}

.specs h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2d3748;
}

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

.spec-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.spec-card h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.spec-list {
    list-style: none;
}

.spec-list li {
    padding: 0.5rem 0;
    color: #4a5568;
    border-bottom: 1px solid #e2e8f0;
}

.spec-list li:last-child {
    border-bottom: none;
}

.docs-section {
    background: white;
    padding: 6rem 0;
}

.docs-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2d3748;
}

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

.doc-card {
    background: #f7fafc;
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid #667eea;
    transition: transform 0.3s;
}

.doc-card:hover {
    transform: translateY(-3px);
}

.doc-card h3 {
    color: #2d3748;
    margin-bottom: 1rem;
}

.doc-card p {
    color: #4a5568;
    margin-bottom: 1rem;
}

.doc-card a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.doc-card a:hover {
    text-decoration: underline;
}

footer {
    background: #2d3748;
    color: white;
    padding: 3rem 0;
    text-align: center;
}

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

.footer-section h3 {
    margin-bottom: 1rem;
    color: #90cdf4;
}

.footer-section a {
    color: #cbd5e0;
    text-decoration: none;
    display: block;
    margin: 0.5rem 0;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #4a5568;
    padding-top: 2rem;
    color: #a0aec0;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .hero-content {
        padding: 1.5rem 1rem;
        border-radius: 15px;
        margin: 0 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav {
        display: flex;
        gap: 1rem;
    }
    
    nav a {
        margin: 0;
    }
}