/* Clean, Professional Styling - Refined Typography */

:root {
    --primary: #2563eb;
    --secondary: #64748b;
    --accent: #0ea5e9;
    --text: #1e293b;
    --text-light: #64748b;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --border: #e2e8f0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
}

.logo {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

.github-btn {
    padding: 0.5rem 1rem;
    background: var(--text);
    color: white !important;
    border-radius: 0.375rem;
}

.github-btn:hover {
    background: var(--primary);
}

/* Hero */
.hero {
    padding: 5rem 0;
    text-align: center;
    background: linear-gradient(to bottom, var(--bg-alt), var(--bg));
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    display: inline-block;
}

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

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.stats {
    display: flex;
    gap: 3rem;
    justify-content: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    max-width: 600px;
    margin: 0 auto;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Sections */
section {
    padding: 5rem 0;
}

section h2 {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text);
}

.section-intro {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Features */
.features {
    background: var(--bg-alt);
}

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

.feature {
    background: var(--bg);
    padding: 2rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.feature p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Quick Start */
.install-note {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 1rem 1.5rem;
    margin-bottom: 3rem;
    border-radius: 0.375rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.steps {
    max-width: 800px;
    margin: 0 auto 2rem;
}

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text);
}

pre {
    background: #1e293b;
    border-radius: 0.375rem;
    padding: 1.25rem;
    overflow-x: auto;
}

code {
    color: #e2e8f0;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.7;
}

.footnote {
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
    max-width: 800px;
    margin: 0 auto;
}

/* Architecture */
.architecture {
    background: var(--bg-alt);
}

.arch-diagram {
    max-width: 500px;
    margin: 0 auto 3rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.arch-box {
    background: var(--bg);
    padding: 1.5rem;
    border-radius: 0.5rem;
    text-align: center;
    border: 2px solid var(--border);
}

.arch-box.accent {
    border-color: var(--accent);
    background: #f0f9ff;
}

.arch-box strong {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text);
}

.arch-box small {
    color: var(--text-light);
    font-size: 0.875rem;
}

.arch-arrow {
    text-align: center;
    font-size: 1.5rem;
    color: var(--accent);
    font-weight: 700;
}

.arch-features {
    max-width: 700px;
    margin: 0 auto;
}

.arch-features h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-align: center;
}

.arch-features ul {
    list-style: none;
}

.arch-features li {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.arch-features li:last-child {
    border-bottom: none;
}

.arch-features strong {
    color: var(--primary);
}

/* Documentation */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.doc-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--text);
    transition: all 0.2s;
}

.doc-link:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.doc-icon {
    font-size: 1.75rem;
}

.doc-title {
    font-weight: 600;
}

/* Footer */
.footer {
    background: var(--text);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.footer a {
    color: white;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.footer a:hover {
    border-bottom-color: white;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .step {
        flex-direction: column;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.875rem;
    }
}