:root {
    --primary: #111827;
    --secondary: #4B5563;
    --accent: #2563EB;
    --accent-hover: #1D4ED8;
    --bg: #FAFAFA;
    --surface: #FFFFFF;
    --border: #E5E7EB;
    --text-main: #1F2937;
    --text-muted: #6B7280;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
nav {
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.btn-primary {
    background-color: var(--accent);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.2s, transform 0.1s;
    display: inline-block;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    border: 1px solid var(--border);
    transition: background-color 0.2s;
    display: inline-block;
}

.btn-secondary:hover {
    background-color: var(--surface);
    border-color: var(--text-muted);
}

/* Hero Section */
.hero {
    padding: 8rem 0 6rem;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

/* Features Grid */
.features {
    padding: 4rem 0;
}

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

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.1);
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

/* Comparison Section */
.comparison {
    background-color: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 6rem 0;
    margin: 4rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.comparison-col h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border);
}

.comparison-list li {
    list-style: none;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-muted);
}

.comparison-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* Structure Preview */
.structure {
    padding: 4rem 0;
}

.code-window {
    background: #1e1e1e;
    border-radius: 12px;
    box-shadow: 0 20px 40px -20px rgba(0,0,0,0.3);
    overflow: hidden;
    font-family: var(--font-mono);
    margin: 2rem auto;
    max-width: 800px;
}

.code-header {
    background: #2d2d2d;
    padding: 0.75rem 1rem;
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.code-content {
    padding: 2rem;
    color: #e0e0e0;
    font-size: 0.9rem;
    line-height: 1.5;
    overflow-x: auto;
}

.comment { color: #6a9955; }
.folder { color: #569cd6; font-weight: bold; }
.file { color: #ce9178; }

/* Getting Started */
.getting-started {
    padding: 4rem 0 6rem;
}

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: flex-start;
}

.step-number {
    background: var(--surface);
    border: 2px solid var(--border);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    margin-bottom: 0.5rem;
}

/* Markdown Content Styling (for Manifesto/Comparison pages) */
.markdown-page {
    padding: 4rem 0;
}

.markdown-page h1 {
    font-size: 3rem;
    margin-bottom: 2rem;
    line-height: 1.2;
}

.markdown-page h2 {
    font-size: 2rem;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.markdown-page h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.markdown-page p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.markdown-page ul, .markdown-page ol {
    margin-bottom: 2rem;
    padding-left: 2rem;
}

.markdown-page li {
    margin-bottom: 0.25rem;
}

.markdown-page blockquote {
    border-left: 4px solid var(--accent);
    padding-left: 1.5rem;
    margin-left: 0;
    margin-bottom: 2rem;
    font-style: italic;
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 0 8px 8px 0;
}

.markdown-page code {
    background: var(--border);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: var(--font-mono);
}

.markdown-page pre {
    background: #1e1e1e;
    color: #e0e0e0;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 2rem;
}

.markdown-page pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.markdown-page hr {
    margin: 3rem 0;
    border: 0;
    border-top: 1px solid var(--border);
}

/* Specific comparison page layout */
.comparison-detail-section {
    margin-bottom: 4rem;
}

.comparison-detail-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

.comparison-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.comparison-detail-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2.5rem;
}

.comparison-detail-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
    border-bottom: none; /* Override markdown-page default */
    padding-bottom: 0;
}

.comparison-detail-card ul {
    list-style: none;
    padding-left: 0;
}

.comparison-detail-card li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
    color: var(--text-main);
}

.comparison-detail-card li::before {
    content: '\2713'; /* Checkmark */
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}


/* Footer */
footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 3rem 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .comparison-grid { grid-template-columns: 1fr; gap: 2rem; }
    .markdown-page h1 { font-size: 2.5rem; }
    .comparison-detail-grid { grid-template-columns: 1fr; }
    .comparison-detail-card { padding: 1.5rem; }
}