/* ====================================
   Kevin Evans - Living Resume
   Modern, Sleek, High-Impact Design
   ==================================== */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-bg: #0a0a0b;
    --color-bg-secondary: #111113;
    --color-bg-tertiary: #18181b;
    --color-surface: #1c1c1f;
    --color-surface-hover: #242428;
    --color-border: #27272a;
    --color-border-subtle: #1f1f23;
    
    --color-text: #fafafa;
    --color-text-secondary: #a1a1aa;
    --color-text-tertiary: #71717a;
    
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-glow: rgba(59, 130, 246, 0.3);
    
    --color-accent: #06b6d4;
    --color-accent-secondary: #8b5cf6;
    
    --color-success: #10b981;
    --color-warning: #f59e0b;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    --gradient-surface: linear-gradient(135deg, var(--color-surface), var(--color-bg-tertiary));
    --gradient-glow: radial-gradient(ellipse at center, var(--color-primary-glow), transparent 70%);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 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;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--color-primary-glow);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

/* Accessibility - Skip Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    z-index: 9999;
    font-weight: 600;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-md);
    outline: 2px solid white;
    outline-offset: 2px;
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn:focus-visible {
    outline: 2px solid white;
    outline-offset: 2px;
    box-shadow: var(--shadow-glow);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Section Base */
.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ====================================
   Navigation
   ==================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition-base);
}

.nav.scrolled {
    border-bottom-color: var(--color-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--gradient-primary);
    color: white !important;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    font-weight: 600;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg);
    z-index: 999;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: var(--transition-base);
}

.mobile-menu.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.mobile-link {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: var(--space-sm) 0;
    transition: var(--transition-fast);
}

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

/* ====================================
   Hero Section
   ==================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-4xl) var(--space-lg);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150%;
    height: 80%;
    background: radial-gradient(ellipse at top center, 
        rgba(59, 130, 246, 0.15) 0%, 
        rgba(6, 182, 212, 0.08) 30%,
        transparent 70%);
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.badge-icon {
    font-size: 1.25rem;
}

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

.hero-name {
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.hero-role {
    font-size: clamp(1.25rem, 4vw, 2rem);
    font-weight: 500;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero-subtitle .highlight {
    color: var(--color-primary);
    font-weight: 600;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

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

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-number::after {
    content: '+';
}

.stat-icon {
    font-size: 2rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-tertiary);
    font-size: 0.75rem;
    animation: float 3s ease-in-out infinite;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--color-text-tertiary);
    border-bottom: 2px solid var(--color-text-tertiary);
    transform: rotate(45deg);
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ====================================
   About Section
   ==================================== */
.about {
    background: var(--color-bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-intro {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.about-intro strong {
    color: var(--color-primary);
}

.about-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.about-highlights {
    display: grid;
    gap: var(--space-md);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-weight: 500;
}

.highlight-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-primary);
}

.about-visual {
    position: relative;
}

.profile-image-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-xl);
    position: relative;
}

.profile-image-wrapper::before {
    content: '';
    position: absolute;
    width: 284px;
    height: 284px;
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    z-index: 0;
}

.profile-image {
    width: 280px;
    height: 280px;
    border-radius: var(--radius-2xl);
    object-fit: cover;
    border: none;
    box-shadow: var(--shadow-xl);
    transition: var(--transition-base);
    position: relative;
    z-index: 1;
}

.profile-image:hover {
    box-shadow: var(--shadow-glow);
    transform: scale(1.02);
}

.visual-card {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    overflow: hidden;
}

.card-glow {
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: var(--gradient-glow);
    opacity: 0.5;
    pointer-events: none;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    position: relative;
    z-index: 1;
}

.tech-tag {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.tech-tag:hover {
    border-color: var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-primary);
}

/* ====================================
   Expertise Section
   ==================================== */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.expertise-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.expertise-card.featured {
    background: linear-gradient(135deg, var(--color-surface), rgba(139, 92, 246, 0.08));
    border-color: rgba(139, 92, 246, 0.3);
}

.expertise-card.featured .card-icon {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
}

.expertise-card.featured::before {
    background: linear-gradient(135deg, #8b5cf6, #06b6d4);
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-base);
}

.expertise-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.expertise-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.card-text {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.card-tags span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-tertiary);
    background: var(--color-bg-tertiary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
}

/* ====================================
   Community Section
   ==================================== */
.community {
    background: var(--color-bg-secondary);
}

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

.community-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    transition: var(--transition-base);
}

.community-card.featured {
    background: linear-gradient(135deg, var(--color-surface), rgba(59, 130, 246, 0.05));
    border-color: rgba(59, 130, 246, 0.3);
}

.community-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.community-badge {
    display: inline-block;
    align-self: flex-start;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.community-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.community-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.community-text {
    flex: 1;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
}

.community-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition-fast);
}

.community-link:hover {
    gap: var(--space-md);
}

/* ====================================
   Credentials Section
   ==================================== */
.credentials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.credential-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition-base);
}

.credential-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.1);
}

.credential-card.featured {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    border-color: var(--color-primary);
}

.credential-badge {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.credential-badge.azure {
    background: linear-gradient(135deg, #0078d4 0%, #00bcf2 100%);
    color: white;
}

.credential-badge.cncf {
    background: linear-gradient(135deg, #446ca9 0%, #6b8dd6 100%);
    color: white;
}

.credential-badge.ambassador {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
}

.credential-content {
    flex: 1;
}

.credential-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.credential-issuer {
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.credential-desc {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ====================================
   Contributions Section
   ==================================== */
.contributions-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.contributions-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-full);
}

.timeline-item {
    position: relative;
    padding-left: var(--space-3xl);
    padding-bottom: var(--space-2xl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--color-bg);
    border: 3px solid var(--color-primary);
    border-radius: 50%;
}

.timeline-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.timeline-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.timeline-content p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

/* ====================================
   Contact Section
   ==================================== */
.contact {
    background: var(--color-bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-3xl);
    align-items: center;
}

.contact-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-text {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--space-2xl);
}

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

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: var(--transition-base);
}

.contact-link:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
}

.contact-link-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-link-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contact-link-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
}

.contact-link-value {
    font-weight: 500;
}

.contact-visual {
    display: flex;
    justify-content: center;
}

.cta-card {
    background: linear-gradient(135deg, var(--color-surface), rgba(59, 130, 246, 0.1));
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    text-align: center;
    max-width: 320px;
}

.cta-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.cta-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

/* ====================================
   Footer
   ==================================== */
.footer {
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

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

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.social-link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

/* ====================================
   Animations
   ==================================== */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ====================================
   Responsive Design
   ==================================== */
@media (max-width: 1024px) {
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .community-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .community-card.featured {
        grid-column: span 2;
    }
    
    .credentials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .credential-card.featured {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    :root {
        --space-4xl: 4rem;
        --space-3xl: 3rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
        min-width: 44px;
        min-height: 44px;
        align-items: center;
        justify-content: center;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .mobile-link {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    .hero {
        padding-top: 100px;
        min-height: auto;
        padding-bottom: var(--space-3xl);
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-stats {
        gap: var(--space-lg);
    }
    
    .stat-divider {
        display: none;
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .stat-icon {
        font-size: 1.75rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .about-visual {
        order: -1;
    }
    
    .profile-image-wrapper::before {
        width: 224px;
        height: 224px;
    }
    
    .profile-image {
        width: 220px;
        height: 220px;
    }
    
    .about-intro {
        font-size: 1.125rem;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .expertise-card {
        padding: var(--space-lg);
    }
    
    .community-grid {
        grid-template-columns: 1fr;
    }
    
    .community-card {
        padding: var(--space-lg);
    }
    
    .community-card.featured {
        grid-column: auto;
    }
    
    .credentials-grid {
        grid-template-columns: 1fr;
    }
    
    .credential-card {
        padding: var(--space-xl);
    }
    
    .credential-card.featured {
        grid-column: auto;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .contact-visual {
        order: -1;
    }
    
    .cta-card {
        max-width: 100%;
    }
    
    .contact-link {
        padding: var(--space-md);
    }
    
    .contact-link-icon {
        width: 40px;
        height: 40px;
    }
    
    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    :root {
        --space-4xl: 3rem;
        --space-3xl: 2.5rem;
        --space-2xl: 2rem;
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .section {
        padding: var(--space-3xl) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero-badge {
        font-size: 0.6875rem;
        padding: var(--space-xs) var(--space-sm);
        text-align: center;
        line-height: 1.4;
    }
    
    .hero-name {
        font-size: 2.5rem;
    }
    
    .hero-role {
        font-size: 1.125rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        min-height: 48px;
        padding: var(--space-md);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .stat {
        flex-direction: row;
        gap: var(--space-sm);
    }
    
    .stat-label {
        text-align: left;
    }
    
    .profile-image-wrapper::before {
        width: 184px;
        height: 184px;
    }
    
    .profile-image {
        width: 180px;
        height: 180px;
    }
    
    .about-highlights {
        gap: var(--space-sm);
    }
    
    .highlight-item {
        font-size: 0.9375rem;
    }
    
    .card-icon {
        width: 48px;
        height: 48px;
    }
    
    .contributions-timeline::before {
        left: 6px;
    }
    
    .timeline-item {
        padding-left: var(--space-2xl);
    }
    
    .timeline-marker {
        left: 0;
    }
    
    .timeline-content {
        padding: var(--space-lg);
    }
    
    .cta-card {
        padding: var(--space-lg);
    }
    
    .footer-brand {
        flex-direction: column;
        gap: var(--space-xs);
    }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .nav-link,
    .mobile-link,
    .contact-link,
    .social-link,
    .community-link {
        min-height: 44px;
    }
    
    .expertise-card:hover,
    .community-card:hover,
    .timeline-content:hover {
        transform: none;
    }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-border: #555;
        --color-text-secondary: #ccc;
    }
}

/* Print styles */
@media print {
    .nav,
    .mobile-menu,
    .scroll-indicator,
    .hero-bg {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .section {
        padding: 1rem 0;
    }
}