/* ==========================================================================
   Hub Landing Page Styles
   jesse-anderson.net
   ========================================================================== */

/* CSS Custom Properties */
:root {
    /* Colors - Light theme */
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f5f5f5;
    --bg-card: #ffffff;
    
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #717171;
    --text-subtle: #9a9a9a;
    
    --border-color: #e5e5e5;
    --border-hover: #d0d0d0;
    
    --accent-primary: #2563eb;
    --accent-secondary: #3b82f6;
    --accent-engineering: #f59e0b;
    --accent-tools: #10b981;
    --accent-blog: #8b5cf6;
    --accent-bio: #ec4899;
    
    /* Typography */
    --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Layout */
    --max-width: 1200px;
    --header-height: 64px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0f0f0f;
        --bg-secondary: #1a1a1a;
        --bg-tertiary: #141414;
        --bg-card: #1a1a1a;
        
        --text-primary: #f5f5f5;
        --text-secondary: #b0b0b0;
        --text-muted: #808080;
        --text-subtle: #606060;
        
        --border-color: #2a2a2a;
        --border-hover: #3a3a3a;
        
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
        --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    }
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-display);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.page-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.nav-link--doc {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.nav-divider {
    width: 1px;
    height: 20px;
    background-color: var(--border-color);
    margin: 0 var(--space-sm);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: var(--space-sm);
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-fast);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-md);
    z-index: 99;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav-link {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
}

.mobile-nav-link:hover {
    background-color: var(--bg-tertiary);
}

.mobile-nav-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: var(--space-sm) 0;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.hero-content {
    max-width: 720px;
}

/* Availability Badge */
.availability {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-tools);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    padding: 0.4rem 0.9rem 0.4rem 0.7rem;
    border-radius: 100px;
    margin-bottom: var(--space-lg);
}

.pulse {
    width: 8px;
    height: 8px;
    background: var(--accent-tools);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}
.currently {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin: 0 0 var(--space-xl) 0;
    padding-left: var(--space-md);
    border-left: 2px solid var(--accent-primary);
}

.currently-label {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-primary);
}
.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0 0 var(--space-md) 0;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--text-primary);
    margin: 0 0 var(--space-lg) 0;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0 0 var(--space-xl) 0;
    max-width: 600px;
}

.hero-proof {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.proof-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-engineering);
}

.proof-number {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent-engineering);
    line-height: 1;
    flex-shrink: 0;
}

.proof-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.proof-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.hero-background {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.background-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.background-text {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Tech Stack Pills */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.stack-pill {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 0.3rem 0.75rem;
    border-radius: 100px;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.stack-pill:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ==========================================================================
   Section Headers
   ========================================================================== */

.section-header {
    margin-bottom: var(--space-xl);
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-sm) 0;
}

.section-subtitle {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin: 0;
}

/* ==========================================================================
   Destinations Section
   ========================================================================== */

.destinations {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.destinations-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.destination-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-xl);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.destination-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.destination-card:hover .card-cta {
    color: var(--accent-primary);
}

.destination-card--tools:hover {
    border-color: var(--accent-tools);
}

.destination-card--tools:hover .card-cta {
    color: var(--accent-tools);
}

.destination-card--blog:hover {
    border-color: var(--accent-blog);
}

.destination-card--blog:hover .card-cta {
    color: var(--accent-blog);
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.card-icon svg {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-sm) 0;
}

.card-description {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin: 0 0 var(--space-md) 0;
    line-height: 1.6;
}

.card-examples {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-lg) 0;
    flex: 1;
}

.card-examples li {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
}

.card-examples li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--text-subtle);
}

.card-cta {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

/* ==========================================================================
   Featured Tools Section
   ========================================================================== */

.featured-tools {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.tool-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--accent-engineering);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.tool-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.tool-card:hover::before {
    opacity: 1;
}

.tool-card:hover .tool-cta {
    color: var(--accent-primary);
}

.tool-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.tool-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.tool-icon svg {
    width: 22px;
    height: 22px;
}

.tool-icon--bio {
    background-color: rgba(236, 72, 153, 0.1);
    color: var(--accent-bio);
}

.tool-icon--eng {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--accent-engineering);
}

.tool-icon--it {
    background-color: rgba(139, 92, 246, 0.1);
    color: var(--accent-blog);
}

.tool-tag {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.tool-name {
    font-family: var(--font-display);
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-sm) 0;
}

.tool-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0 0 var(--space-md) 0;
    flex: 1;
}

.tool-cta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.tools-footer {
    text-align: center;
}

.view-all-link {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.view-all-link:hover {
    color: var(--accent-primary);
}

/* ==========================================================================
   Latest Writing Section
   ========================================================================== */

.latest-writing {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.section-head-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.writing {
    margin-bottom: var(--space-xl);
}

.writing-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.writing-item {
    padding: var(--space-lg);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.writing-item:hover {
    border-color: var(--accent-blog);
    box-shadow: var(--shadow-md);
}

.writing-title {
    font-family: var(--font-display);
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-sm) 0;
    line-height: 1.4;
}

.writing-title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.writing-title a:hover {
    color: var(--accent-blog);
}

.writing-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.writing-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.writing-tags {
    display: flex;
    gap: var(--space-xs);
}

.writing-tag {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--accent-blog);
    padding: 2px var(--space-sm);
    background-color: rgba(139, 92, 246, 0.1);
    border-radius: var(--radius-sm);
}

.muted {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: var(--space-sm) 0 0 0;
}

/* Skeleton Loading States */
.writing-skeleton {
    padding: var(--space-lg);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.sk-line {
    height: 14px;
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--border-color) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.sk-line:last-child {
    margin-bottom: 0;
}

.w-25 { width: 25%; }
.w-30 { width: 30%; }
.w-35 { width: 35%; }
.w-50 { width: 50%; }
.w-55 { width: 55%; }
.w-60 { width: 60%; }
.w-70 { width: 70%; }
.w-75 { width: 75%; }
.w-80 { width: 80%; }

@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Hide skeletons when content loaded */
[aria-busy="false"] .writing-skeleton {
    display: none;
}

.text-link {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.text-link:hover {
    color: var(--accent-primary);
}

.posts-footer {
    text-align: center;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact-section {
    padding: var(--space-3xl) 0;
}

.contact-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2xl);
    padding: var(--space-2xl);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.contact-text {
    flex: 1;
}

.contact-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-sm) 0;
}

.contact-description {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin: 0 0 var(--space-md) 0;
    max-width: 480px;
}

.contact-email {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    color: var(--accent-primary);
    transition: opacity var(--transition-fast);
}

.contact-email:hover {
    opacity: 0.8;
}

.contact-docs {
    display: flex;
    gap: var(--space-md);
}

.doc-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.doc-button:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-card);
}

.doc-button svg {
    width: 18px;
    height: 18px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-lg) 0;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-copyright {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.footer-right {
    display: flex;
    gap: var(--space-lg);
}

.footer-link {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--text-primary);
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero,
.destinations,
.featured-tools,
.latest-writing,
.contact-section {
    animation: fadeInUp 0.5s ease forwards;
}

.hero { animation-delay: 0.1s; }
.destinations { animation-delay: 0.2s; }
.featured-tools { animation-delay: 0.3s; }
.latest-writing { animation-delay: 0.4s; }
.contact-section { animation-delay: 0.5s; }

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1024px) {
    .destinations-grid,
    .tools-grid,
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }
    
    main {
        padding: 0 var(--space-md);
    }
    
    .header-inner {
        padding: 0 var(--space-md);
    }
    
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: var(--space-2xl) 0;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .destinations-grid,
    .tools-grid,
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .destinations,
    .featured-tools,
    .latest-writing,
    .contact-section {
        padding: var(--space-2xl) 0;
    }
    
    .contact-content {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-description {
        max-width: none;
    }
    
    .contact-docs {
        flex-direction: column;
        width: 100%;
    }
    
    .doc-button {
        justify-content: center;
    }
    
    .footer-inner {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.25rem;
    }
    
    .proof-item {
        flex-direction: column;
        gap: var(--space-sm);
        align-items: flex-start;
    }
    
    .proof-number {
        font-size: 1.5rem;
    }
    
    .hero-background {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .site-header,
    .site-footer,
    .mobile-nav {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero,
    .destinations,
    .featured-tools,
    .latest-writing,
    .contact-section {
        animation: none;
        page-break-inside: avoid;
    }
}