/* Russell Korus - Personal Brand Website
   Dark/Tech Elegant Design */

/* CSS Reset & Variables */
:root {
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a25;
    --color-bg-card: #16161f;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #6b6b7b;
    --color-accent: #00d4ff;
    --color-accent-hover: #00b8e0;
    --color-accent-glow: rgba(0, 212, 255, 0.15);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(0, 212, 255, 0.3);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background:
        radial-gradient(ellipse 100% 80% at 0% 0%, rgba(0, 150, 255, 0.5) 0%, transparent 40%),
        radial-gradient(ellipse 80% 80% at 100% 100%, rgba(0, 100, 220, 0.4) 0%, transparent 40%),
        radial-gradient(ellipse 60% 60% at 50% 50%, rgba(0, 80, 180, 0.25) 0%, transparent 50%),
        repeating-linear-gradient(0deg, transparent, transparent 59px, rgba(0, 212, 255, 0.4) 59px, rgba(0, 212, 255, 0.4) 60px),
        repeating-linear-gradient(90deg, transparent, transparent 59px, rgba(0, 212, 255, 0.4) 59px, rgba(0, 212, 255, 0.4) 60px),
        linear-gradient(180deg, #050508 0%, #080810 50%, #050508 100%);
    background-attachment: fixed;
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
    color: var(--color-text-secondary);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #0099cc 100%);
    color: var(--color-bg-primary);
    box-shadow: 0 4px 20px var(--color-accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.25);
    color: var(--color-bg-primary);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

/* Ensure content above grid overlay */
section, footer {
    position: relative;
    z-index: 2;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

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

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav a {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.social-icons {
    display: flex;
    gap: var(--spacing-sm);
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.social-icons a:hover {
    color: var(--color-accent);
    background: var(--color-accent-glow);
}

/* Grid pattern variable for reuse */
:root {
    --grid-pattern: repeating-linear-gradient(0deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        repeating-linear-gradient(90deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px);
}

/* Hero Section */
.hero {
    padding-top: calc(80px + var(--spacing-2xl));
    padding-bottom: var(--spacing-2xl);
    background:
        repeating-linear-gradient(0deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        repeating-linear-gradient(90deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        radial-gradient(ellipse 70% 50% at 85% 20%, rgba(0, 180, 255, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse 60% 60% at 15% 80%, rgba(0, 120, 220, 0.3) 0%, transparent 50%),
        linear-gradient(180deg, rgba(5,5,10,0.95) 0%, rgba(8,8,16,0.98) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-tagline {
    font-size: 1.125rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.hero h1 {
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #ffffff 0%, #a0a0b0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    max-width: 540px;
}

.hero-image {
    display: flex;
    justify-content: center;
}

.hero-image img {
    max-width: 400px;
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--color-border);
}

/* Section Styles */
section {
    padding: var(--spacing-2xl) 0;
}

/* Cyan divider lines between ALL sections (except first) */
.featured-section,
.about,
.engage,
.media,
.gallery,
.blog,
.cta {
    border-top: 3px solid rgba(0, 212, 255, 0.7) !important;
}

/* Featured Section (right after hero) */
.featured-section {
    background:
        repeating-linear-gradient(0deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        repeating-linear-gradient(90deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        radial-gradient(ellipse 70% 60% at 80% 30%, rgba(0, 180, 255, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse 50% 50% at 20% 70%, rgba(0, 120, 220, 0.3) 0%, transparent 50%),
        linear-gradient(180deg, #080810 0%, #0a0a14 100%);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.section-intro {
    text-align: center;
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.subsection-title {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: 1.25rem;
}

/* About Section */
.about {
    background:
        repeating-linear-gradient(0deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        repeating-linear-gradient(90deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        radial-gradient(ellipse 60% 60% at 95% 20%, rgba(0, 180, 255, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse 50% 50% at 5% 80%, rgba(0, 120, 220, 0.25) 0%, transparent 50%),
        linear-gradient(180deg, #0a0a14 0%, #0c0c18 100%);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.about-content .highlight {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-top: var(--spacing-lg);
}

/* Engage Section */
.engage {
    background:
        repeating-linear-gradient(0deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        repeating-linear-gradient(90deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        radial-gradient(ellipse 80% 80% at 50% 50%, rgba(0, 150, 220, 0.25) 0%, transparent 50%),
        radial-gradient(ellipse 40% 40% at 90% 25%, rgba(0, 180, 255, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse 35% 35% at 10% 75%, rgba(0, 120, 200, 0.2) 0%, transparent 50%),
        linear-gradient(180deg, #050508 0%, #08080e 100%);
}

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

.engage-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.engage-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.engage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-glow);
    border-radius: 50%;
    color: var(--color-accent);
}

.engage-card h3 {
    margin-bottom: var(--spacing-xs);
}

.engage-tagline {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.engage-card ul {
    list-style: none;
    text-align: left;
}

.engage-card li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-secondary);
    position: relative;
    padding-left: var(--spacing-md);
}

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

.engage-cta {
    text-align: center;
}

/* Media Section */
.media {
    background:
        repeating-linear-gradient(0deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        repeating-linear-gradient(90deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        radial-gradient(ellipse 50% 70% at 100% 50%, rgba(0, 180, 255, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse 40% 40% at 5% 20%, rgba(0, 140, 220, 0.25) 0%, transparent 50%),
        linear-gradient(180deg, #0a0a14 0%, #0c0c18 100%);
}

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

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

.video-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.video-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.video-card.featured {
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-tertiary) 100%);
}

.video-embed {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-info {
    padding: var(--spacing-md);
}

.video-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-accent-glow);
    color: var(--color-accent);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

.video-info h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.video-info p {
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Gallery Section */
.gallery {
    background:
        repeating-linear-gradient(0deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        repeating-linear-gradient(90deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        radial-gradient(ellipse 70% 50% at 50% 0%, rgba(0, 180, 255, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse 40% 40% at 20% 80%, rgba(0, 140, 220, 0.2) 0%, transparent 50%),
        linear-gradient(180deg, #050508 0%, #08080e 100%);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-md);
}

.gallery-grid img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.gallery-grid img:hover {
    transform: scale(1.05);
    border-color: var(--color-border-hover);
}

/* Blog Section */
.blog {
    background:
        repeating-linear-gradient(0deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        repeating-linear-gradient(90deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        radial-gradient(ellipse 50% 50% at 15% 30%, rgba(0, 160, 240, 0.28) 0%, transparent 50%),
        radial-gradient(ellipse 45% 45% at 85% 70%, rgba(0, 130, 200, 0.22) 0%, transparent 50%),
        linear-gradient(180deg, #0a0a14 0%, #0c0c18 100%);
}

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

.blog-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.blog-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.blog-meta {
    margin-bottom: var(--spacing-sm);
}

.blog-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-accent-glow);
    color: var(--color-accent);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
}

.blog-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.blog-card p {
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-md);
}

.blog-link {
    font-size: 0.875rem;
    font-weight: 500;
}

/* CTA Section */
.cta {
    background:
        repeating-linear-gradient(0deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        repeating-linear-gradient(90deg, transparent 0px, transparent 57px, rgba(0, 212, 255, 0.12) 57px, rgba(0, 212, 255, 0.12) 60px),
        radial-gradient(ellipse 100% 80% at 50% 100%, rgba(0, 180, 255, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse 50% 50% at 20% 30%, rgba(0, 140, 220, 0.25) 0%, transparent 50%),
        linear-gradient(135deg, #0c0c16 0%, #050508 100%);
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.cta h2 {
    margin-bottom: var(--spacing-md);
}

.cta p {
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    font-size: 1.125rem;
}

/* Footer */
.footer {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand .logo {
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    font-size: 0.9375rem;
}

.footer-links h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.footer-links a {
    display: block;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    padding: var(--spacing-xs) 0;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-image {
        order: -1;
    }

    .hero-image img {
        max-width: 300px;
    }

    .engage-grid,
    .featured-videos,
    .media-grid,
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .engage-grid,
    .featured-videos,
    .media-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .hero {
        padding-top: calc(70px + var(--spacing-xl));
    }

    .hero-image img {
        max-width: 250px;
    }

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

    .social-icons {
        gap: var(--spacing-xs);
    }
}