/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #10b981;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --border: #e2e8f0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: #ffffff;
}

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

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    transition: color 0.3s;
}

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

.github-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--dark);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: background 0.3s;
}

.github-btn:hover {
    background: #334155;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s;
    display: inline-block;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

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

.feature-number {
    font-size: 2.5rem;
    font-weight: 800;
}

.feature-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* Section Styles */
section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--dark);
}

/* Features Section */
.features {
    background: var(--light);
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.feature-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* Setup Section */
.setup {
    background: white;
}

.setup-content {
    max-width: 900px;
    margin: 0 auto;
}

.setup-method {
    margin-bottom: 3rem;
}

.setup-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.setup-icon {
    font-size: 2rem;
}

.setup-method h4 {
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.code-block {
    background: #1e293b;
    border-radius: 8px;
    padding: 1.5rem;
    overflow-x: auto;
    margin: 1rem 0;
}

.code-block pre {
    margin: 0;
}

.code-block code {
    color: #e2e8f0;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.setup-note {
    color: var(--gray);
    font-style: italic;
    margin-top: 1rem;
}

.requirements {
    background: var(--light);
    padding: 2rem;
    border-radius: 12px;
    margin-top: 2rem;
}

.requirements h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.requirements ul {
    list-style: none;
    padding: 0;
}

.requirements li {
    padding: 0.5rem 0;
    color: var(--gray);
}

.requirements strong {
    color: var(--dark);
}

/* Tech Stack Section */
.tech-stack {
    background: var(--light);
}

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

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

.tech-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.tech-list {
    list-style: none;
    padding: 0;
}

.tech-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--dark);
}

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

/* Contribute Section */
.contribute {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.contribute-content {
    max-width: 900px;
    margin: 0 auto;
}

.contribute-subtitle {
    text-align: center;
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.contribute-ways {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contribute-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contribute-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contribute-card ul,
.contribute-card ol {
    padding-left: 1.5rem;
}

.contribute-card li {
    margin: 0.75rem 0;
    line-height: 1.7;
}

.contribute-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 3rem 0;
}

.contribute-footer {
    text-align: center;
    font-size: 1.125rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--dark);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-section p {
    color: #94a3b8;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin: 0.5rem 0;
}

.footer-section a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-features {
        flex-direction: column;
        gap: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .features-grid,
    .tech-grid,
    .contribute-ways {
        grid-template-columns: 1fr;
    }

    .contribute-cta {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 4rem 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    section {
        padding: 3rem 0;
    }

    .code-block {
        padding: 1rem;
    }

    .code-block code {
        font-size: 0.8rem;
    }
}