/* CSS Variables for Theme Support */
:root {
    /* Enhanced Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    --bg-tertiary: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --accent-primary: #3b82f6;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #06b6d4;
    --accent-quaternary: #10b981;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%);
    --border-color: #e2e8f0;
    --border-color-hover: #cbd5e1;
    --shadow-light: 0 2px 8px rgba(59, 130, 246, 0.08);
    --shadow-medium: 0 8px 25px rgba(59, 130, 246, 0.12);
    --shadow-heavy: 0 20px 40px rgba(59, 130, 246, 0.15);
    --shadow-ai: 0 0 30px rgba(59, 130, 246, 0.25);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-ai: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%);
    --gradient-bg: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f1f5f9 100%);
    --neural-glow: rgba(59, 130, 246, 0.12);
    --avatar-glow: rgba(139, 92, 246, 0.25);
    --ai-glow: rgba(6, 182, 212, 0.15);
    --ai-pulse: rgba(59, 130, 246, 0.3);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.2);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --contact-link-color: #0072c6;
}

/* Dark Theme Colors */
[data-theme="dark"] {
    /* Enhanced Dark Theme Colors */
    --bg-primary: #0f172a;
    --bg-secondary: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --bg-tertiary: linear-gradient(135deg, #334155 0%, #475569 100%);
    --bg-card: rgba(30, 41, 59, 0.9);
    --bg-card-hover: rgba(30, 41, 59, 0.95);
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --accent-primary: #60a5fa;
    --accent-secondary: #a78bfa;
    --accent-tertiary: #22d3ee;
    --accent-quaternary: #34d399;
    --accent-gradient: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #22d3ee 100%);
    --border-color: #334155;
    --border-color-hover: #475569;
    --shadow-light: 0 2px 8px rgba(96, 165, 250, 0.15);
    --shadow-medium: 0 8px 25px rgba(96, 165, 250, 0.2);
    --shadow-heavy: 0 20px 40px rgba(96, 165, 250, 0.25);
    --shadow-ai: 0 0 30px rgba(96, 165, 250, 0.4);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.4);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-ai: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #22d3ee 100%);
    --gradient-bg: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    --neural-glow: rgba(96, 165, 250, 0.2);
    --avatar-glow: rgba(167, 139, 250, 0.3);
    --ai-glow: rgba(34, 211, 238, 0.2);
    --ai-pulse: rgba(96, 165, 250, 0.4);
    --glass-bg: rgba(30, 41, 59, 0.8);
    --glass-border: rgba(51, 65, 85, 0.3);
    --contact-link-color: #4da3ff;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 70px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--gradient-bg);
    background-attachment: fixed;
    transition: background var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    font-feature-settings: 'liga' 1, 'calt' 1;
    text-rendering: optimizeLegibility;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.02) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

[data-theme="dark"] body::before {
    background:
        radial-gradient(circle at 20% 80%, rgba(96, 165, 250, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(167, 139, 250, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(34, 211, 238, 0.03) 0%, transparent 50%);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-light);
    z-index: 1000;
    transition: all var(--transition-normal);
    overflow: visible;
    will-change: background-color, border-color, box-shadow;
    transform: translateZ(0);
}

[data-theme="dark"] .navbar {
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    overflow: visible;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: nowrap;
    overflow: visible;
}



.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1.1rem;
    transition: color var(--transition-fast);
    position: relative;
    padding: 0.75rem 1rem;
}

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

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

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

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Hide mobile elements on desktop */
.mobile-social-links,
.mobile-nav-toggle,
.mobile-menu,
.mobile-only,
.accordion-header {
    display: none;
}

/* Desktop accordion behavior - content always visible */
.accordion-content {
    display: block;
}

/* Navigation Social Icons - Ad Blocker Resistant */
.nav-social {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 2rem;
    /* Anti-ad-blocker protection */
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
}

.nav-social-link {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    /* Anti-ad-blocker protection */
    visibility: visible !important;
    opacity: 1 !important;
    transform: none !important;
}

.nav-social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left var(--transition-slow);
}

.nav-social-link:hover::before {
    left: 100%;
}

.nav-social-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.nav-social-link.github:hover {
    background: #24292e;
    color: white;
    border-color: #24292e;
}

.nav-social-link.linkedin:hover {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

.nav-social-link.orcid:hover {
    background: #a6ce39;
    color: white;
    border-color: #a6ce39;
}

.nav-social-link i {
    font-size: 1.2rem;
    z-index: 1;
    position: relative;
}

/* Navigation Icons - Inline SVG (Primary) + External Backup (Ad Blocker Resistant) */
.nav-icon {
    width: 1.2rem;
    height: 1.2rem;
    display: inline-block;
    transition: all var(--transition-fast);
    vertical-align: middle;
    opacity: 1;
    visibility: visible;
    /* Dark icons for light theme */
    color: var(--text-color, #333);
}

.nav-icon.large {
    width: 1.5rem;
    height: 1.5rem;
}

/* Backup external icon styling - HIDDEN BY DEFAULT */
.nav-icon-backup {
    width: 1.2rem;
    height: 1.2rem;
    display: none !important; /* Hidden by default - only shown when inline SVG fails */
    transition: all var(--transition-fast);
    vertical-align: middle;
    opacity: 1;
    visibility: visible;
    /* Dark icons for light theme */
    filter: brightness(0) saturate(100%) invert(15%) sepia(13%) saturate(2497%) hue-rotate(201deg) brightness(97%) contrast(85%);
}

.nav-icon-backup.large {
    width: 1.5rem;
    height: 1.5rem;
}

/* Show backup when activated by JavaScript */
.nav-icon-backup.backup-active {
    display: inline-block !important;
}

/* Dark theme adjustments */
[data-theme="dark"] .nav-icon {
    color: var(--text-color-dark, #e0e0e0);
}

[data-theme="dark"] .nav-icon-backup {
    filter: brightness(0) saturate(100%) invert(100%) sepia(100%) saturate(0%) hue-rotate(288deg) brightness(102%) contrast(102%);
}

/* New navigation links container styling */
.nav-links-external {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 2rem;
    /* Anti-ad-blocker protection */
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
}

/* New navigation link styling */
.nav-ext-link {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    /* Anti-ad-blocker protection */
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    visibility: visible !important;
    opacity: 1 !important;
    transform: none !important;
}

.nav-ext-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left var(--transition-slow);
}

.nav-ext-link:hover::before {
    left: 100%;
}

.nav-ext-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Platform-specific hover styles */
.nav-ext-link.dev-platform:hover {
    background: #24292e;
    color: white;
    border-color: #24292e;
}

.nav-ext-link.professional-platform:hover {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

.nav-ext-link.research-platform:hover {
    background: #a6ce39;
    color: white;
    border-color: #a6ce39;
}

/* Hover states for navigation icons */
.nav-ext-link.dev-platform:hover .nav-icon,
.nav-ext-link.professional-platform:hover .nav-icon,
.nav-ext-link.research-platform:hover .nav-icon {
    color: #ffffff;
}

.nav-ext-link.dev-platform:hover .nav-icon-backup,
.nav-ext-link.professional-platform:hover .nav-icon-backup,
.nav-ext-link.research-platform:hover .nav-icon-backup {
    filter: brightness(0) saturate(100%) invert(100%) sepia(100%) saturate(0%) hue-rotate(288deg) brightness(102%) contrast(102%);
}

/* Text fallbacks for when everything fails */
.text-backup {
    display: none;
    font-size: 0.9rem;
    font-weight: bold;
    color: currentColor;
    text-decoration: none;
    user-select: none;
    pointer-events: none;
}

/* Legacy support for old class names */
.social-icon {
    width: 1.2rem;
    height: 1.2rem;
    display: inline-block;
    transition: all var(--transition-fast);
    vertical-align: middle;
    opacity: 1;
    visibility: visible;
    filter: brightness(0) saturate(100%) invert(15%) sepia(13%) saturate(2497%) hue-rotate(201deg) brightness(97%) contrast(85%);
}

.social-icon.large {
    width: 1.5rem;
    height: 1.5rem;
}

[data-theme="dark"] .social-icon {
    filter: brightness(0) saturate(100%) invert(100%) sepia(100%) saturate(0%) hue-rotate(288deg) brightness(102%) contrast(102%);
}

.text-fallback {
    display: none;
    font-size: 0.9rem;
    font-weight: bold;
    color: currentColor;
    text-decoration: none;
    user-select: none;
    pointer-events: none;
}

/* Screen reader only text */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Fallback for when SVGs fail to load */
.nav-social-link::after {
    content: attr(aria-label);
    display: none;
    font-size: 0.8rem;
    font-weight: bold;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    text-align: center;
    color: currentColor;
}

.social-link::after {
    content: "";
    display: none;
}

/* Show text fallback if SVG doesn't load - JavaScript will add .no-svg class */
.nav-social-link.no-svg::after {
    display: block;
}

.nav-social-link.no-svg .social-svg {
    display: none;
}

/* Enhanced anti-ad-blocker protection */
.nav-social-link {
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
    /* Override common ad blocker hiding techniques */
    display: flex !important;
    z-index: 999 !important;
}

.nav-social-link .social-svg {
    visibility: visible !important;
    display: inline-block !important;
    opacity: 1 !important;
    /* Prevent SVG-specific blocking */
    pointer-events: auto !important;
    filter: none !important;
}

/* Alternative social link class names to evade detection */
.nav-contact-link {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    visibility: visible !important;
    opacity: 1 !important;
}

/* Anti-ad-blocker CSS using alternative selectors */
a[href*="github.com"],
a[href*="linkedin.com"],
a[href*="orcid.org"] {
    visibility: visible !important;
    opacity: 1 !important;
    display: flex !important;
}

/* Multiple backup icon systems */
.backup-icon {
    display: inline-block;
    width: 1.2rem;
    height: 1.2rem;
    text-align: center;
    line-height: 1.2rem;
    font-size: 1rem;
    font-weight: bold;
}

/* Platform-specific emoji fallbacks */
.platform-gh::after { content: "⚡"; }
.platform-li::after { content: "💼"; }
.platform-or::after { content: "🆔"; }

/* Text-based fallbacks */
.text-fallback-gh::after { content: "GH"; }
.text-fallback-li::after { content: "LI"; }
.text-fallback-or::after { content: "OR"; }

/* Platform fallback elements - Enhanced for uBlock Origin resistance */
.platform-fallback {
    display: none !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    font-size: 1.2rem !important;
    z-index: 1000 !important;
    pointer-events: none !important;
    color: currentColor !important;
    line-height: 1 !important;
    user-select: none !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* Show fallbacks when SVG is hidden */
.nav-social-link.fallback-active .social-svg,
.nav-social-link.no-svg .social-svg {
    display: none !important;
}

.nav-social-link.fallback-active .platform-fallback,
.nav-social-link.no-svg .platform-fallback {
    display: inline-block !important;
}

/* Alternative naming for critical elements */
.nav-contact-links {
    visibility: visible !important;
    opacity: 1 !important;
    display: flex !important;
}

.dev-profile,
.professional-profile,
.research-profile {
    visibility: visible !important;
    opacity: 1 !important;
    display: flex !important;
    position: relative !important;
}

.profile-icon {
    visibility: visible !important;
    opacity: 1 !important;
    display: inline-block !important;
}

/* Force visibility with different selector patterns */
[data-platform="github"],
[data-platform="linkedin"],
[data-platform="orcid"] {
    visibility: visible !important;
    opacity: 1 !important;
    display: flex !important;
}

[data-contact="development-portfolio"],
[data-contact="professional-network"],
[data-contact="research-identifier"] {
    visibility: visible !important;
    opacity: 1 !important;
    display: flex !important;
}

/* Backup icon containers */
.emoji-icon,
.text-icon,
.unicode-icon {
    visibility: visible !important;
    opacity: 1 !important;
    display: inline-block !important;
}

/* Anti-detection patterns */
.anti-block,
.social-secure,
.fallback-active {
    visibility: visible !important;
    opacity: 1 !important;
    display: flex !important;
    transform: none !important;
}

/* CSS-based icon generation for ultimate fallback */
.nav-social-link:not(.fallback-active):after {
    content: attr(data-text);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.8rem;
    font-weight: bold;
    display: none;
    color: currentColor;
    z-index: 1000;
}

/* Show CSS fallback when needed */
.nav-social-link.ultimate-fallback:after {
    display: block !important;
}

.nav-social-link.ultimate-fallback .social-svg,
.nav-social-link.ultimate-fallback .platform-fallback {
    display: none !important;
}

/* Nuclear CSS-only fallback system */
.nav-social.nuclear-fallback {
    display: flex !important;
    gap: 0.75rem;
    align-items: center;
}

.nav-social.nuclear-fallback::before {
    content: "";
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

/* CSS-only social icon shapes */
.css-icon-gh,
.css-icon-li,
.css-icon-or {
    display: inline-block !important;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    position: relative;
    margin: 0 0.375rem;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.css-icon-gh:hover {
    background: #24292e;
    transform: translateY(-2px);
}

.css-icon-li:hover {
    background: #0077b5;
    transform: translateY(-2px);
}

.css-icon-or:hover {
    background: #a6ce39;
    transform: translateY(-2px);
}

/* CSS-generated icons using geometric shapes */
.css-icon-gh::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1.2rem;
    height: 1.2rem;
    background: currentColor;
    border-radius: 20%;
    box-shadow:
        0 0.2rem 0 currentColor,
        -0.3rem -0.3rem 0 -0.1rem currentColor,
        0.3rem -0.3rem 0 -0.1rem currentColor;
}

.css-icon-li::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1rem;
    height: 1rem;
    background: currentColor;
    border-radius: 0.2rem;
    box-shadow:
        0 0.4rem 0 -0.2rem currentColor,
        0.4rem 0 0 -0.2rem currentColor;
}

.css-icon-or::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1.2rem;
    height: 1.2rem;
    background: transparent;
    border: 0.15rem solid currentColor;
    border-radius: 50%;
    box-shadow: inset 0.3rem 0 0 currentColor;
}

/* Force visibility of nuclear fallback */
.nuclear-fallback-active .css-icon-gh,
.nuclear-fallback-active .css-icon-li,
.nuclear-fallback-active .css-icon-or {
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* Enhanced fallback system for uBlock Origin resistance */
.immediate-backup-github,
.immediate-backup-linkedin,
.immediate-backup-orcid,
.emergency-text-fallback {
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
    color: currentColor !important;
    font-family: inherit !important;
    text-decoration: none !important;
    background: none !important;
    border: none !important;
    outline: none !important;
    filter: none !important;
    transform: none !important;
    position: relative !important;
    z-index: 9999 !important;
}

/* Advanced fallback protection */
.nav-social-link.advanced-fallback-active,
.nav-social-link.ublock-resistant {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    align-items: center !important;
    justify-content: center !important;
    width: 2.5rem !important;
    height: 2.5rem !important;
    border-radius: 0.5rem !important;
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    text-decoration: none !important;
    transition: all 0.2s ease !important;
    border: 1px solid var(--border-color) !important;
    position: relative !important;
    overflow: hidden !important;
    margin: 0 0.375rem !important;
    font-size: 0.9rem !important;
    font-weight: bold !important;
}

/* Ensure text fallbacks are always visible */
.nav-social-link .immediate-backup-github,
.nav-social-link .immediate-backup-linkedin,
.nav-social-link .immediate-backup-orcid {
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    font-size: 0.9rem !important;
    font-weight: bold !important;
    color: currentColor !important;
    z-index: 1000 !important;
    pointer-events: none !important;
    user-select: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    text-shadow: none !important;
    background: none !important;
    border: none !important;
    outline: none !important;
    filter: none !important;
}

/* Show text backups when SVG is hidden */
.nav-social-link.advanced-fallback-active .immediate-backup-github,
.nav-social-link.advanced-fallback-active .immediate-backup-linkedin,
.nav-social-link.advanced-fallback-active .immediate-backup-orcid,
.nav-social-link.ublock-resistant .immediate-backup-github,
.nav-social-link.ublock-resistant .immediate-backup-linkedin,
.nav-social-link.ublock-resistant .immediate-backup-orcid {
    display: block !important;
}

/* Emergency text fallback styling */
.emergency-text-fallback {
    font-size: 0.9rem !important;
    font-weight: bold !important;
    color: currentColor !important;
    display: inline-block !important;
    text-decoration: none !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
    z-index: 9999 !important;
    text-shadow: none !important;
    background: none !important;
    border: none !important;
    outline: none !important;
    filter: none !important;
    transform: none !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* Ultra-high priority overrides for blocked elements */
a[href*="github.com"].nav-social-link,
a[href*="linkedin.com"].nav-social-link,
a[href*="orcid.org"].nav-social-link {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    width: 2.5rem !important;
    height: 2.5rem !important;
    align-items: center !important;
    justify-content: center !important;
    text-decoration: none !important;
    color: var(--text-primary) !important;
    background: var(--bg-tertiary) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 0.5rem !important;
    position: relative !important;
    margin: 0 0.375rem !important;
    font-size: 0.9rem !important;
    font-weight: bold !important;
}

/* Force visibility with different selector patterns to evade detection */
[data-platform="github"].nav-social-link,
[data-platform="linkedin"].nav-social-link,
[data-platform="orcid"].nav-social-link,
[data-contact="development-portfolio"],
[data-contact="professional-network"],
[data-contact="research-identifier"] {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
    z-index: 999 !important;
}

/* Backup styling for completely blocked scenarios */
.nav-social.fallback-mode {
    display: flex !important;
    align-items: center !important;
    gap: 0.75rem !important;
    margin-left: 2rem !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.nav-social.fallback-mode::after {
    content: "GH LI OR" !important;
    display: flex !important;
    gap: 0.75rem !important;
    font-size: 0.9rem !important;
    font-weight: bold !important;
    color: var(--text-primary) !important;
    visibility: visible !important;
    opacity: 1 !important;
}



.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.75rem;
}

.bar {
    width: 28px;
    height: 3px;
    background: var(--text-primary);
    margin: 4px 0;
    transition: var(--transition-fast);
    border-radius: 2px;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 0.75rem;
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
    margin-left: 1rem;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    transform: scale(1.1);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    width: 100%;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    width: 100%;
    max-width: 1000px;
}

.hero-text {
    flex: 2.5;
    min-width: 0;
    max-width: 1000px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gradient-ai);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1rem;
    animation: pulse 2s ease-in-out infinite;
}

.hero-stats {
    display: flex;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.stat-item {
    text-align: center;
}

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

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.0;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% { filter: hue-rotate(0deg); }
    50% { filter: hue-rotate(10deg); }
}

.hero-subtitle {
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
}

.btn-secondary:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

/* Avatar Section */
.hero-avatar {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    width: 100%;
    max-width: 400px;
}

.avatar-container {
    position: relative;
    width: clamp(280px, 35vw, 350px);
    height: clamp(280px, 35vw, 350px);
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-secondary);
    border-radius: 50%;
}

.avatar-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent-primary);
    box-shadow: var(--shadow-heavy);
    position: relative;
    z-index: 3;
    transition: transform var(--transition-normal), opacity 0.3s ease;
    display: block;
    opacity: 1;
}

.avatar-image.loading {
    opacity: 0;
}

.avatar-image:hover {
    transform: scale(1.05);
}

/* CSS Avatar Fallback Styling */
.css-avatar-fallback {
    transition: transform var(--transition-normal);
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.css-avatar-fallback:hover {
    transform: scale(1.05);
}

/* Avatar Loading Indicator */
.avatar-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--gradient-ai);
    border-radius: 50%;
    border: 4px solid var(--accent-primary);
    box-shadow: var(--shadow-heavy);
    z-index: 2;
    transition: opacity 0.3s ease;
}

.avatar-loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 0.5rem;
}

.loading-text {
    color: white;
    font-size: 2rem;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* CSS Avatar Fallback positioning */
.avatar-container .css-avatar-fallback {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.avatar-glow {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    border-radius: 50%;
    background: var(--avatar-glow);
    filter: blur(20px);
    animation: pulse 3s ease-in-out infinite;
    z-index: 1;
}

.avatar-glow::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border-radius: 50%;
    background: var(--gradient-ai);
    filter: blur(15px);
    animation: pulse 2s ease-in-out infinite reverse;
    opacity: 0.6;
}

.avatar-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background: radial-gradient(circle, transparent 30%, var(--neural-glow) 70%);
    animation: rotate 20s linear infinite;
    z-index: 0;
}

/* Enhanced AI-themed avatar overlay */
.avatar-ai-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    z-index: 3;
    pointer-events: none;
}

/* Rotating objects around avatar */
.avatar-rotating-objects {
    position: absolute;
    top: -30px;
    left: -30px;
    right: -30px;
    bottom: -30px;
    border-radius: 50%;
    z-index: 1;
    pointer-events: none;
}

.rotating-ring {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: rotate-ring 8s linear infinite;
}

.rotating-ring:nth-child(2) {
    border-color: var(--accent-secondary);
    animation-duration: 12s;
    animation-direction: reverse;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
}

.rotating-ring:nth-child(3) {
    border-color: var(--accent-tertiary);
    animation-duration: 6s;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
}

.rotating-dots {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
}

.rotating-dot {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--accent-quaternary);
    border-radius: 50%;
    animation: rotate-dot 10s linear infinite;
}

.rotating-dot:nth-child(1) {
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

.rotating-dot:nth-child(2) {
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    animation-delay: 2.5s;
}

.rotating-dot:nth-child(3) {
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 5s;
}

.rotating-dot:nth-child(4) {
    top: 50%;
    left: 10%;
    transform: translateY(-50%);
    animation-delay: 7.5s;
}

@keyframes rotate-ring {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes rotate-dot {
    0% {
        transform: translateX(-50%) rotate(0deg) translateX(60px) rotate(0deg);
        opacity: 0.8;
    }
    25% {
        transform: translateX(-50%) rotate(90deg) translateX(60px) rotate(-90deg);
        opacity: 1;
    }
    50% {
        transform: translateX(-50%) rotate(180deg) translateX(60px) rotate(-180deg);
        opacity: 0.8;
    }
    75% {
        transform: translateX(-50%) rotate(270deg) translateX(60px) rotate(-270deg);
        opacity: 1;
    }
    100% {
        transform: translateX(-50%) rotate(360deg) translateX(60px) rotate(-360deg);
        opacity: 0.8;
    }
}

/* Flying objects around avatar */
.avatar-flying-objects {
    position: absolute;
    top: -50px;
    left: -50px;
    right: -50px;
    bottom: -50px;
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
}

.flying-object {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: fly-orbit 15s linear infinite;
    box-shadow: 0 0 10px var(--accent-primary);
}

.flying-object:nth-child(1) {
    background: var(--accent-primary);
    animation-duration: 12s;
    animation-delay: 0s;
}

.flying-object:nth-child(2) {
    background: var(--accent-secondary);
    animation-duration: 18s;
    animation-delay: 3s;
    width: 6px;
    height: 6px;
}

.flying-object:nth-child(3) {
    background: var(--accent-tertiary);
    animation-duration: 14s;
    animation-delay: 6s;
    width: 10px;
    height: 10px;
}

.flying-object:nth-child(4) {
    background: var(--accent-quaternary);
    animation-duration: 16s;
    animation-delay: 9s;
    width: 7px;
    height: 7px;
}

.flying-object:nth-child(5) {
    background: var(--accent-primary);
    animation-duration: 20s;
    animation-delay: 12s;
    width: 5px;
    height: 5px;
}

.flying-object:nth-child(6) {
    background: var(--accent-secondary);
    animation-duration: 13s;
    animation-delay: 15s;
    width: 9px;
    height: 9px;
}

@keyframes fly-orbit {
    0% {
        transform: translate(-50%, -50%) rotate(0deg) translateX(80px) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    25% {
        transform: translate(-50%, -50%) rotate(90deg) translateX(80px) rotate(-90deg);
        opacity: 0.8;
    }
    50% {
        transform: translate(-50%, -50%) rotate(180deg) translateX(80px) rotate(-180deg);
        opacity: 1;
    }
    75% {
        transform: translate(-50%, -50%) rotate(270deg) translateX(80px) rotate(-270deg);
        opacity: 0.8;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg) translateX(80px) rotate(-360deg);
        opacity: 0;
    }
}

/* Spiral flying objects */
.spiral-flying-object {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-tertiary);
    border-radius: 50%;
    animation: spiral-fly 25s linear infinite;
    box-shadow: 0 0 8px var(--accent-tertiary);
}

.spiral-flying-object:nth-child(1) {
    animation-delay: 0s;
    animation-duration: 22s;
}

.spiral-flying-object:nth-child(2) {
    animation-delay: 8s;
    animation-duration: 28s;
    background: var(--accent-quaternary);
    box-shadow: 0 0 8px var(--accent-quaternary);
}

.spiral-flying-object:nth-child(3) {
    animation-delay: 16s;
    animation-duration: 20s;
    background: var(--accent-primary);
    box-shadow: 0 0 8px var(--accent-primary);
}

@keyframes spiral-fly {
    0% {
        transform: translate(-50%, -50%) rotate(0deg) translateX(40px) rotate(0deg);
        opacity: 0;
    }
    20% {
        transform: translate(-50%, -50%) rotate(72deg) translateX(60px) rotate(-72deg);
        opacity: 1;
    }
    40% {
        transform: translate(-50%, -50%) rotate(144deg) translateX(80px) rotate(-144deg);
        opacity: 0.8;
    }
    60% {
        transform: translate(-50%, -50%) rotate(216deg) translateX(100px) rotate(-216deg);
        opacity: 1;
    }
    80% {
        transform: translate(-50%, -50%) rotate(288deg) translateX(120px) rotate(-288deg);
        opacity: 0.8;
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg) translateX(140px) rotate(-360deg);
        opacity: 0;
    }
}

.ai-circuit {
    position: absolute;
    top: 10%;
    left: 10%;
    width: 80%;
    height: 80%;
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: circuit-pulse 4s ease-in-out infinite;
}

.ai-circuit::before,
.ai-circuit::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-secondary);
    border-radius: 50%;
    animation: circuit-node 3s ease-in-out infinite;
}

.ai-circuit::before {
    top: 20%;
    left: 20%;
}

.ai-circuit::after {
    bottom: 20%;
    right: 20%;
    animation-delay: 1.5s;
}

.ai-data-stream {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background: conic-gradient(from 0deg, transparent, var(--accent-tertiary), transparent);
    opacity: 0.2;
    animation: data-stream 8s linear infinite;
}

.ai-nodes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
}

.ai-nodes::before,
.ai-nodes::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--accent-quaternary);
    border-radius: 50%;
    animation: node-pulse 2s ease-in-out infinite;
}

.ai-nodes::before {
    top: 15%;
    right: 15%;
    animation-delay: 0.5s;
}

.ai-nodes::after {
    bottom: 15%;
    left: 15%;
    animation-delay: 1s;
}

.avatar-status {
    position: absolute;
    bottom: -50px; /* Moved slightly lower for larger size */
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 1rem; /* Increased gap */
    background: var(--bg-primary);
    padding: 1rem 2rem; /* Increased padding significantly */
    border-radius: 1.5rem; /* Larger border radius */
    border: 1px solid var(--border-color);
    font-size: 1.2rem; /* Increased font size */
    font-weight: 600; /* Bolder font weight */
    color: var(--text-primary);
    white-space: nowrap;
    box-shadow: var(--shadow-medium); /* Enhanced shadow */
}

.status-dot {
    width: 12px; /* Increased size */
    height: 12px; /* Increased size */
    background: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.5); /* Enhanced glow */
    animation: status-pulse 2s ease-in-out infinite;
}



@keyframes circuit-pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.1); opacity: 0.6; }
}

@keyframes circuit-node {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.5); opacity: 1; }
}

@keyframes data-stream {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes node-pulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.5); opacity: 1; }
}

@keyframes status-pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

@keyframes status-ring {
    0% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.1;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

@keyframes ai-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.3;
        box-shadow: 0 0 20px var(--ai-pulse);
    }
    50% {
        transform: scale(1.05);
        opacity: 0.6;
        box-shadow: 0 0 40px var(--ai-pulse);
    }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Neural Network Background */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    opacity: 0.1;
}

.neural-network {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 20%, var(--accent-primary) 1px, transparent 1px),
        radial-gradient(circle at 80% 80%, var(--accent-secondary) 1px, transparent 1px),
        radial-gradient(circle at 40% 60%, var(--accent-tertiary) 1px, transparent 1px),
        radial-gradient(circle at 60% 30%, var(--accent-quaternary) 1px, transparent 1px);
    background-size: 100px 100px, 150px 150px, 200px 200px, 120px 120px;
    animation: float 20s ease-in-out infinite;
    will-change: transform;
    transform: translateZ(0);
}

.neural-network::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(45deg, transparent 40%, var(--neural-glow) 50%, transparent 60%),
        linear-gradient(-45deg, transparent 40%, var(--ai-glow) 50%, transparent 60%);
    background-size: 300px 300px, 250px 250px;
    animation: neural-flow 15s linear infinite;
    opacity: 0.3;
    will-change: transform;
    transform: translateZ(0);
}

/* Enhanced AI Particles */
.ai-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    background: radial-gradient(circle at 25% 25%, var(--accent-primary) 1px, transparent 1px),
                radial-gradient(circle at 75% 75%, var(--accent-secondary) 1px, transparent 1px),
                radial-gradient(circle at 50% 10%, var(--accent-tertiary) 1px, transparent 1px),
                radial-gradient(circle at 10% 90%, var(--accent-quaternary) 1px, transparent 1px);
    background-size: 80px 80px, 120px 120px, 60px 60px, 100px 100px;
    animation: ai-particle-drift 25s linear infinite;
    opacity: 0.3;
}

@keyframes ai-particle-drift {
    0% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(10px, -15px) rotate(90deg); }
    50% { transform: translate(-5px, -25px) rotate(180deg); }
    75% { transform: translate(-15px, -10px) rotate(270deg); }
    100% { transform: translate(0, 0) rotate(360deg); }
}

.data-flow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(90deg, transparent 0%, var(--neural-glow) 50%, transparent 100%),
        linear-gradient(0deg, transparent 0%, var(--ai-glow) 50%, transparent 100%);
    background-size: 200px 200px, 150px 150px;
    animation: data-flow 20s linear infinite;
    opacity: 0.1;
    will-change: transform;
    transform: translateZ(0);
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

@keyframes neural-flow {
    0% { transform: translateX(-100%) translateY(-100%); }
    100% { transform: translateX(100%) translateY(100%); }
}

@keyframes data-flow {
    0% { transform: translateX(-100px) translateY(-100px); }
    100% { transform: translateX(100px) translateY(100px); }
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-intro {
    margin-bottom: 2rem;
}

.about-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.skills-grid {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
}

.skill-category h3 {
    font-size: 1.2rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-category h3::before {
    content: '';
    width: 20px;
    height: 2px;
    background: var(--gradient-accent);
    border-radius: 1px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--glass-border);
    transition: all var(--transition-normal);
    cursor: pointer;
    opacity: 1;
    transform: translateY(0);
    box-shadow: var(--shadow-light);
    position: relative;
    overflow: hidden;
}



.skill-tag:hover {
    background: var(--gradient-ai);
    color: white;
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-medium), var(--shadow-ai);
    animation: ai-pulse 1s ease-in-out;
}

/* Social Links */
.social-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-normal);
    border: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left var(--transition-slow);
}

.social-link:hover::before {
    left: 100%;
}

.social-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.social-link.github:hover {
    background: #24292e;
    color: white;
}

.social-link.linkedin:hover {
    background: #0077b5;
    color: white;
}

.social-link.orcid:hover {
    background: #a6ce39;
    color: white;
}

.social-link i {
    font-size: 1.5rem;
}

/* Projects Section */
.projects {
    padding: 6rem 0;
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid var(--glass-border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease-out forwards;
    box-shadow: var(--shadow-card);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.project-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--ai-glow), transparent);
    transition: left var(--transition-slow);
    z-index: 0;
}

.project-card:hover::after {
    left: 100%;
}

.project-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-card-hover), var(--shadow-ai);
    border-color: var(--accent-primary);
    background: var(--bg-card-hover);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-links a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: color var(--transition-fast);
}

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

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    position: relative;
    z-index: 1;
}

.tech-tag {
    background: var(--accent-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Experience Section */
.experience {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    width: 100%;
    opacity: 0;
    transform: translateX(-50px);
    animation: fadeInLeft 0.6s ease-out forwards;
}

.timeline-item:nth-child(even) {
    animation: fadeInRight 0.6s ease-out forwards;
    transform: translateX(50px);
}

.timeline-item:nth-child(odd) {
    padding-right: 50%;
    padding-left: 2rem;
}

.timeline-item:nth-child(even) {
    padding-left: 50%;
    padding-right: 2rem;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    top: 1rem;
    width: 1rem;
    height: 1rem;
    background: var(--accent-primary);
    border-radius: 50%;
    border: 3px solid var(--bg-secondary);
    box-shadow: var(--shadow-light);
    transform: translateX(-50%);
    z-index: 2;
}

.timeline-content {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 2.2rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
    position: relative;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 2rem;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 2rem;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium), var(--shadow-ai);
}

.timeline-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-company {
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.timeline-type {
    color: var(--accent-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Publications Section */
.publications {
    padding: 6rem 0;
    background: var(--bg-primary);
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.publication-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--glass-border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease-out forwards;
    box-shadow: var(--shadow-card);
}

.publication-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--ai-glow), transparent);
    transition: left var(--transition-slow);
    z-index: 0;
}

.publication-card:hover::before {
    left: 100%;
}

.publication-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.publication-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.publication-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    margin-right: 1rem;
}

.publication-date {
    color: var(--accent-primary);
    font-weight: 500;
    font-size: 0.9rem;
    white-space: nowrap;
}

.publication-venue {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.publication-description {
    color: var(--text-secondary);
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.9fr;
    gap: 4rem;
    align-items: start;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-primary);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.contact-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--accent-primary);
    width: 2rem;
    text-align: center;
}

.contact-details {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.contact-value {
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: color var(--transition-fast);
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    background: none;
    border: none;
    padding: 0;
    font-family: inherit;
    font-size: inherit;
    text-align: left;
}

.contact-value-list {
    list-style: none;
    margin: 0;
    padding: 0;
    color: var(--text-primary);
    font-weight: 500;
}

.contact-value-list li {
    position: relative;
    padding-left: 1.2rem;
    margin-bottom: 0.25rem;
    line-height: 1.4;
}

.contact-value-list li:before {
    content: '•';
    position: absolute;
    left: 0;
    top: 0.1em;
    color: var(--accent-primary);
    font-weight: bold;
    font-size: 1em;
    line-height: 1;
}

.contact-value-list li:last-child {
    margin-bottom: 0;
}

.contact-value-list a {
  color: var(--contact-link-color);
  text-decoration: underline;
  transition: color 0.2s;
}

.contact-value:hover {
    color: var(--accent-primary);
}

.contact-message {
    color: var(--text-secondary);
    line-height: 1.7;
}

.contact-message p {
    margin-bottom: 1rem;
}

.contact-highlights {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-primary);
    font-weight: 500;
}

.highlight-item i {
    font-size: 1.2rem;
}

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

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer-text {
    color: var(--text-secondary);
}



/* Enhanced Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-animation {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.ai-brain {
    width: 80px;
    height: 80px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    position: relative;
}

.ai-brain::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    border: 2px solid var(--accent-secondary);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: spin 1.5s linear infinite reverse;
}

.ai-brain::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    border: 2px solid var(--accent-tertiary);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: spin 2s linear infinite;
}

.loading-text {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 500;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal);
    z-index: 1000;
    box-shadow: var(--shadow-medium);
    will-change: opacity, visibility, transform;
    transform: translateZ(0);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Completely hide the navbar on mobile */
    .navbar {
        display: none;
    }

    /* Mobile menu - positioned as overlay */
    .mobile-menu {
        position: fixed;
        left: -100%;
        top: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--bg-primary);
        text-align: center;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-medium);
        padding: 2rem;
        backdrop-filter: blur(10px);
        border: none;
        z-index: 10000;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
    }

    .mobile-menu.active {
        left: 0;
    }

    /* Hide the navbar hamburger on mobile */
    .nav-toggle {
        display: none;
    }

    /* Mobile-only floating hamburger menu button */
    .mobile-nav-toggle {
        position: fixed;
        top: 20px;
        right: 20px;
        display: flex;
        flex-direction: column;
        cursor: pointer;
        padding: 0.5rem;
        z-index: 10001;
        background: var(--bg-card);
        border-radius: 8px;
        box-shadow: var(--shadow-medium);
        border: 1px solid var(--border-color);
    }

    .mobile-nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .mobile-nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .mobile-nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Hide desktop social icons and theme toggle */
    .nav-social,
    .nav-links-external,
    .theme-toggle {
        display: none;
    }

    /* Mobile social links - horizontal layout at top of menu */
    .mobile-social-links {
        display: flex;
        flex-direction: row;
        gap: 1.5rem;
        justify-content: center;
        align-items: center;
        margin-bottom: 2rem;
        padding-bottom: 2rem;
        border-bottom: 1px solid var(--border-color);
    }

    /* Mobile navigation links container */
    .mobile-nav-links {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        align-items: center;
        width: 100%;
    }

    .mobile-social-link {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 3rem;
        height: 3rem;
        color: var(--text-primary);
        text-decoration: none;
        border-radius: 50%;
        background: var(--bg-tertiary);
        border: 1px solid var(--border-color);
        transition: all var(--transition-fast);
        position: relative;
        overflow: hidden;
    }

    .mobile-social-link:hover {
        background: var(--accent-primary);
        color: white;
        transform: translateY(-2px);
        box-shadow: var(--shadow-medium);
    }

    .mobile-social-icon {
        width: 20px;
        height: 20px;
        flex-shrink: 0;
    }

    /* Hide text labels on mobile social links */
    .mobile-social-link span {
        display: none;
    }

    /* Mobile navigation links styling */
    .mobile-nav-link {
        font-size: 1.2rem;
        padding: 1rem 2rem;
        margin: 0.5rem 0;
        border-radius: 8px;
        transition: all var(--transition-fast);
        width: 100%;
        max-width: 300px;
        text-decoration: none;
        color: var(--text-primary);
        display: block;
    }

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

    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
        padding: 0 1rem;
        min-height: calc(100vh - 60px);
        width: 100%;
    }

    .hero-content {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
        text-align: center;
        width: 100%;
    }

    .hero-text {
        width: 100%;
        max-width: 100%;
        align-items: center;
        text-align: center;
    }

    .hero-avatar {
        order: -1;
        margin-bottom: 1rem;
    }

    .hero-stats {
        justify-content: space-evenly;
        gap: 1rem;
        width: 100%;
        padding: 0 1rem;
        margin: 2rem 0;
        flex-wrap: wrap;
    }

    .hero-buttons {
        justify-content: center;
        gap: 1rem;
        width: 100%;
        flex-direction: row;
        align-items: center;
        flex-wrap: wrap;
        padding: 0 1rem;
    }

    .btn {
        flex: 1;
        min-width: 140px;
        max-width: none;
        justify-content: center;
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-description {
        font-size: 1rem;
        line-height: 1.7;
        text-align: left;
        margin-bottom: 1.5rem;
    }

    .about-intro {
        margin-bottom: 2rem;
        text-align: left;
        width: 100%;
    }

    .about {
        padding: 4rem 0;
    }

    .about .container {
        padding: 0 1rem;
    }

    /* Mobile Accordion Styles */
    .mobile-only {
        display: block;
    }

    .desktop-title {
        display: none;
    }

    .accordion-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1.5rem 1rem;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        margin-bottom: 0.5rem;
        cursor: pointer;
        transition: all var(--transition-fast);
        user-select: none;
    }

    .accordion-header:hover {
        background: var(--bg-tertiary);
        transform: translateY(-1px);
        box-shadow: var(--shadow-light);
    }

    .accordion-header.active {
        background: var(--accent-primary);
        color: white;
        border-color: var(--accent-primary);
    }

    .accordion-title {
        font-size: 1.3rem;
        font-weight: 600;
        margin: 0;
        color: inherit;
    }

    .accordion-icon {
        transition: transform var(--transition-fast);
        font-size: 1.1rem;
    }

    .accordion-header.active .accordion-icon {
        transform: rotate(180deg);
    }

    .accordion-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-slow), padding var(--transition-fast);
        padding: 0 1rem;
    }

    .accordion-content.active {
        max-height: 2000px;
        padding: 1.5rem 1rem 2rem 1rem;
    }

    /* Section spacing for accordion */
    .accordion-section {
        padding: 1rem 0;
        margin-bottom: 0.5rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-highlights {
        justify-content: center;
        gap: 1rem;
    }

    .projects-grid,
    .publications-grid {
        grid-template-columns: 1fr;
    }

    /* Mobile timeline adjustments */
    .timeline::before {
        left: 2rem;
    }

    .timeline-item {
        padding-left: 4rem !important;
        padding-right: 0 !important;
    }

    .timeline-marker {
        left: 1.5rem;
        transform: none;
    }

    .timeline-content {
        margin-left: 0 !important;
        margin-right: 0 !important;
    }

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

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

    .section-title {
        font-size: 2rem;
    }

    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .project-card,
    .publication-card {
        padding: 1.5rem;
    }

    .skill-tags {
        gap: 0.5rem;
        justify-content: flex-start;
        width: 100%;
    }

    .skill-tag {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
        flex-shrink: 0;
    }

    /* Improve mobile text styling */
    .hero-title {
        font-size: clamp(2rem, 10vw, 2.8rem);
        line-height: 1.1;
        margin-bottom: 1.5rem;
    }

    .hero-subtitle {
        font-size: clamp(1.1rem, 5vw, 1.3rem);
        margin-bottom: 1.5rem;
        line-height: 1.3;
    }

    .hero-description {
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 2rem;
        text-align: center;
        width: 100%;
        padding: 0 0.5rem;
    }

    .hero-badge {
        margin-bottom: 1.5rem;
        font-size: 0.85rem;
    }

    .stat-item {
        text-align: center;
        flex: 1;
        min-width: 100px;
        padding: 0.5rem;
    }

    .stat-number {
        display: block;
        font-size: 1.8rem;
        font-weight: 700;
        margin-bottom: 0.25rem;
    }

    .stat-label {
        font-size: 0.85rem;
        color: var(--text-secondary);
    }

    .contact-highlights {
        flex-direction: column;
        align-items: center;
    }

    .avatar-status {
        font-size: 1.1rem; /* Larger font size on mobile */
        padding: 0.9rem 1.8rem; /* Increased padding on mobile */
        bottom: -45px; /* Adjusted position on mobile */
        gap: 0.9rem; /* Increased gap on mobile */
    }

    .status-dot {
        width: 11px; /* Larger dot on mobile */
        height: 11px; /* Larger dot on mobile */
    }

    .hero-container {
        padding: 0 1rem;
    }

    .avatar-container {
        width: clamp(200px, 60vw, 250px);
        height: clamp(200px, 60vw, 250px);
    }
}

/* Focus styles for accessibility */
.nav-link:focus,
.btn:focus,
.social-link:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Loading animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Email protection styles */
#email-display {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

/* Floating particles animation */
@keyframes float-particle {
    0% {
        transform: translateY(0px) translateX(0px);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0;
    }
}

.floating-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-primary);
    border-radius: 50%;
    opacity: 0.3;
    pointer-events: none;
    animation: float-particle 15s linear infinite;
}

/* Enhanced AI-themed elements with matrix effect */
.ai-glow {
    position: relative;
    overflow: hidden;
}

.ai-glow::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--ai-glow), transparent);
    transition: left var(--transition-slow);
    z-index: 0;
}

.ai-glow:hover::before {
    left: 100%;
}

/* Matrix rain effect for hero background */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(90deg, transparent 0%, var(--neural-glow) 1%, transparent 2%),
        linear-gradient(180deg, transparent 0%, var(--ai-glow) 1%, transparent 2%);
    background-size: 2px 100px, 100px 2px;
    animation: matrix-rain 20s linear infinite;
    opacity: 0.1;
    z-index: -1;
    pointer-events: none;
}

@keyframes matrix-rain {
    0% {
        background-position: 0% 0%, 0% 0%;
        opacity: 0.1;
    }
    50% {
        background-position: 100% 50%, 50% 100%;
        opacity: 0.05;
    }
    100% {
        background-position: 200% 100%, 100% 200%;
        opacity: 0.1;
    }
}

/* Holographic effect for skill tags */
.skill-tag {
    position: relative;
    overflow: hidden;
}

.skill-tag::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        from 0deg,
        transparent,
        var(--accent-primary),
        var(--accent-secondary),
        var(--accent-tertiary),
        transparent
    );
    opacity: 0;
    transition: opacity var(--transition-normal);
    animation: hologram-rotate 3s linear infinite;
    z-index: -1;
}

.skill-tag:hover::before {
    opacity: 0.3;
}

@keyframes hologram-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Enhanced button animations */
.btn-ai {
    background: var(--gradient-ai);
    color: white;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-ai::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left var(--transition-slow);
}

.btn-ai:hover::before {
    left: 100%;
}

/* Enhanced focus styles */
.nav-link:focus,
.btn:focus,
.social-link:focus,
.contact-value:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
    border-radius: 0.25rem;
}

/* Enhanced hover effects for timeline */
.timeline-content:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-medium), var(--shadow-ai);
}

/* Enhanced publication cards */
.publication-card:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: var(--shadow-medium), var(--shadow-ai);
    border-color: var(--accent-secondary);
}

/* Print styles */
@media print {
    .navbar,
    .hero-background,
    .avatar-glow,
    .avatar-particles,
    .loading-screen,
    .scroll-to-top {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 2rem 0;
    }

    .container {
        max-width: none;
        padding: 0 1rem;
    }
}

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

    .neural-network,
    .neural-network::before,
    .data-flow {
        animation: none !important;
        will-change: auto !important;
    }

    .navbar {
        will-change: auto !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
    }

    [data-theme="dark"] {
        --border-color: #ffffff;
        --text-secondary: #ffffff;
    }
}