/* DGP Website Styles - Dark Theme, Agent-Friendly */

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #1f2937;
    --text-primary: #e6edf3;
    --text-secondary: #9198a1;
    --text-muted: #6e7681;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --border: #30363d;
    --code-bg: #161b22;
    --code-border: #30363d;
    --success: #3fb950;
    --warning: #d29922;

    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', 'Consolas', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 40px;
    width: auto;
}

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

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.nav .github-link {
    color: var(--accent);
    font-weight: 500;
}

/* Hero Section */
.hero {
    padding: 6rem 0 4rem;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent) 0%, #79c0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 400;
}

.description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.version-badge {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.5rem 1.5rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--success);
    border-radius: 2rem;
    color: var(--success);
    font-size: 0.9rem;
}

.version-badge strong {
    color: var(--text-primary);
}

/* Features Section */
.features {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

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

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

.feature {
    padding: 1.5rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.feature h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--accent);
}

.feature p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Example Section */
.example {
    padding: 4rem 0;
}

.example h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.example > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

pre {
    background-color: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 8px;
    padding: 1.5rem;
    overflow-x: auto;
    margin: 1.5rem 0;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--text-primary);
}

.example-note {
    color: var(--text-muted);
    font-style: italic;
    margin-top: 1rem;
}

/* Atom Types Section */
.atom-types {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.atom-types h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.atom-types > .container > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.atom-types > .container > p a {
    color: var(--accent);
    text-decoration: none;
}

.atom-types > .container > p a:hover {
    text-decoration: underline;
}

.atom-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.atom-type {
    padding: 1.5rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.atom-type h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.atom-icon {
    color: var(--accent);
    font-size: 1.5rem;
}

.atom-type p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.atom-note {
    margin-top: 2rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.atom-note a {
    color: var(--accent);
    text-decoration: none;
}

.atom-note a:hover {
    text-decoration: underline;
}

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

.getting-started h2 {
    font-size: 2.5rem;
    margin-bottom: 2.5rem;
    text-align: center;
}

.start-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.start-item {
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: center;
    display: flex;
    flex-direction: column;
    min-height: 220px;
}

.start-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--accent);
}

.start-item p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
    font-size: 0.95rem;
    flex-grow: 1;
}

.btn {
    display: inline-block;
    padding: 0.6rem 1rem;
    background-color: var(--accent);
    color: var(--bg-primary);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: background-color 0.2s;
    white-space: nowrap;
    font-size: 0.9rem;
    margin-top: auto;
}

.btn:hover {
    background-color: var(--accent-hover);
}

/* Use Cases Section */
.use-cases {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.use-cases h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.use-case-list {
    list-style: none;
    max-width: 900px;
}

.use-case-list li {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.use-case-list strong {
    color: var(--accent);
    font-weight: 600;
}

/* Footer */
.footer {
    padding: 3rem 0 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
}

.footer p {
    margin-bottom: 0.75rem;
}

.footer a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-note {
    margin-top: 1.5rem;
    font-style: italic;
    color: var(--text-muted);
}

/* CSN Section */
.csn {
    padding: 4rem 0;
}

.csn h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.csn > .container > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.csn-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1.5rem;
    align-items: center;
}

.csn-example {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
}

.csn-example h4 {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.csn-example pre {
    margin: 0;
    font-size: 0.85rem;
}

.csn-arrow {
    font-size: 2.5rem;
    color: var(--accent);
    font-weight: bold;
}

.csn-note {
    color: var(--text-muted);
    font-style: italic;
    margin-top: 1.5rem;
    text-align: center;
}

/* Works With Section */
.works-with {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.works-with h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.works-with-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.works-with-item {
    padding: 1.5rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.works-with-item.primary {
    border-left: 3px solid var(--accent);
}

.works-with-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.works-with-item h3 a {
    color: var(--accent);
    text-decoration: none;
}

.works-with-item h3 a:hover {
    text-decoration: underline;
}

.works-with-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.works-with-item .btn {
    margin-top: 0.5rem;
}

/* Security Section */
.security {
    padding: 4rem 0;
}

.security h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.security .section-intro {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 800px;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.security-item {
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.security-item.risk {
    border-left: 3px solid var(--warning);
}

.security-item.mitigation {
    border-left: 3px solid var(--success);
}

.security-item h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.security-item.risk h3 {
    color: var(--warning);
}

.security-item.mitigation h3 {
    color: var(--success);
}

.security-item ul {
    list-style: none;
}

.security-item li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.security-item li strong {
    color: var(--text-primary);
}

/* Python Implementation Section */
.python-impl {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.python-impl h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.python-impl .section-intro {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.install-block {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    margin-bottom: 2rem;
    display: inline-block;
}

.install-block code {
    font-size: 1.1rem;
    color: var(--accent);
}

.code-example {
    margin-bottom: 2.5rem;
}

.code-example h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.code-example pre {
    margin: 0;
}

.impl-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.impl-feature {
    padding: 1.25rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.impl-feature h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.impl-feature p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.btn-github {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: transparent;
    color: var(--accent);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    border: 1px solid var(--accent);
    transition: all 0.2s;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.2rem;
    }

    .description {
        font-size: 1rem;
    }

    .nav {
        gap: 1rem;
        flex-wrap: wrap;
    }

    .header .container {
        flex-direction: column;
        gap: 1rem;
    }

    .feature-grid,
    .atom-list,
    .csn-grid,
    .impl-features,
    .security-grid,
    .works-with-content {
        grid-template-columns: 1fr;
    }

    .start-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .csn-arrow {
        transform: rotate(90deg);
        text-align: center;
    }

    section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 3rem 0 2rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    pre {
        padding: 1rem;
        font-size: 0.85rem;
    }

    .start-grid {
        grid-template-columns: 1fr;
    }
}

/* Syntax Highlighting for Code Blocks */
code .string { color: #a5d6ff; }
code .number { color: #79c0ff; }
code .boolean { color: #79c0ff; }
code .null { color: #79c0ff; }
code .key { color: #7ee787; }