/* Decision Graph Website Styles */

:root {
    --bg: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --surface: #1f1f1f;
    --border: #2a2a2a;
    --text: #e5e5e5;
    --text-secondary: #a0a0a0;
    --text-muted: #666;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #10b981;
    --code-bg: #0d1117;
    --radius: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

code {
    font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
    background: var(--code-bg);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
}

pre {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    overflow-x: auto;
    font-size: 0.875rem;
    line-height: 1.7;
}

pre code {
    background: none;
    padding: 0;
    font-size: inherit;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
}

.btn:hover {
    text-decoration: none;
}

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

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

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

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

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

.btn-outline:hover {
    background: var(--surface);
}

/* Navigation */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text);
    font-weight: 600;
    font-size: 1.1rem;
}

.logo:hover {
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--text);
    text-decoration: none;
}

/* Hero */
.hero {
    min-height: 100vh;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-secondary) 100%);
    padding-bottom: 4rem;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

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

.hero-code {
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
}

.hero-code pre {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.hero-code .prompt {
    color: var(--accent);
}

.hero-code .output {
    color: var(--text-secondary);
}

/* Sections */
section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

section h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 1rem;
}

/* Features */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    color: var(--primary);
}

.feature h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

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

/* Demos */
.demos {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 4rem 2rem;
}

.demos-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.demo-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    color: var(--text);
}

.demo-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
    text-decoration: none;
}

.demo-header {
    padding: 2rem;
    position: relative;
}

.demo-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: white;
}

.demo-body {
    padding: 1.5rem;
}

.demo-body h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.demo-body p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.demo-body p a {
    color: var(--primary);
    text-decoration: underline;
}

.demo-body p a:hover {
    color: var(--text);
}

.demo-stats {
    list-style: none;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.demo-stats li {
    background: var(--bg-tertiary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Record Types */
.record-types {
    background: var(--bg);
}

.types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 3rem;
}

.type-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

.type-prefix {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: monospace;
    margin-bottom: 0.5rem;
}

.type-name {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.type-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Install */
.install {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

/* Install Tabs */
.install-tabs {
    max-width: 600px;
    margin: 3rem auto 0;
}

.install-tabs input[type="radio"] {
    display: none;
}

.tab-labels {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0;
    flex-wrap: wrap;
    justify-content: center;
}

.tab-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
}

.tab-label:hover {
    color: var(--text);
}

.tab-label svg {
    flex-shrink: 0;
}

/* Active tab styles */
#tab-brew:checked ~ .tab-labels label[for="tab-brew"],
#tab-nix:checked ~ .tab-labels label[for="tab-nix"],
#tab-cargo:checked ~ .tab-labels label[for="tab-cargo"],
#tab-source:checked ~ .tab-labels label[for="tab-source"] {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-panels {
    margin-top: 1.5rem;
}

.tab-panel {
    display: none;
}

/* Show active panel */
#tab-brew:checked ~ .tab-panels #panel-brew,
#tab-nix:checked ~ .tab-panels #panel-nix,
#tab-cargo:checked ~ .tab-panels #panel-cargo,
#tab-source:checked ~ .tab-panels #panel-source {
    display: block;
}

.tab-panel p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.tab-panel pre {
    margin-bottom: 1rem;
}

.install-note {
    margin-top: 1rem;
    font-size: 0.85rem !important;
    color: var(--text-muted) !important;
}

/* Legacy install-method styles (kept for compatibility) */
.install-method h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.install-method p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.quickstart {
    margin-top: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.quickstart h3 {
    text-align: center;
    margin-bottom: 1rem;
}

.quickstart .comment {
    color: var(--text-muted);
}

.quickstart .prompt {
    color: var(--accent);
}

/* CTA */
.cta {
    text-align: center;
    padding: 6rem 2rem;
}

.cta h2 {
    margin-bottom: 1rem;
}

.cta p {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 2rem;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .hero-content {
        padding: 2rem 1rem;
    }

    .hero-actions {
        flex-direction: column;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 1rem;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .tab-labels {
        gap: 0.25rem;
    }

    .tab-label {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    .tab-label svg {
        width: 16px;
        height: 16px;
    }
}