/* ============================================
   CSS Custom Properties (Variables)
   ============================================ */
:root {
    /* Light Mode Colors - Blue Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f0f7ff;
    --bg-card: rgba(59, 130, 246, 0.05);
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-hover: #2563eb;
    --border-color: #bfdbfe;
    --shadow-sm: 0 1px 3px rgba(59, 130, 246, 0.1);
    --shadow-md: 0 4px 6px rgba(59, 130, 246, 0.15);
    --shadow-lg: 0 10px 20px rgba(59, 130, 246, 0.2);
    --shadow-xl: 0 20px 40px rgba(59, 130, 246, 0.25);
    --nav-bg: rgba(255, 255, 255, 0.85);
    --gradient-start: #3b82f6;
    --gradient-end: #1d4ed8;
    --gradient-accent: #60a5fa;
    
    /* Font Families */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Space Mono', 'Courier New', monospace;
    
    /* Transitions - Enhanced with cubic-bezier */
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Animation Durations */
    --duration-fast: 200ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
}

/* Dark Mode Colors - Blue Theme */
body.dark-mode {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(59, 130, 246, 0.1);
    --text-primary: #dbeafe;
    --text-secondary: #93c5fd;
    --accent-primary: #60a5fa;
    --accent-secondary: #93c5fd;
    --accent-hover: #3b82f6;
    --border-color: #1e3a8a;
    --shadow-sm: 0 1px 3px rgba(59, 130, 246, 0.3);
    --shadow-md: 0 4px 6px rgba(59, 130, 246, 0.4);
    --shadow-lg: 0 10px 20px rgba(59, 130, 246, 0.5);
    --shadow-xl: 0 20px 40px rgba(59, 130, 246, 0.6);
    --nav-bg: rgba(15, 23, 42, 0.85);
    --gradient-start: #60a5fa;
    --gradient-end: #3b82f6;
    --gradient-accent: #93c5fd;
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
}

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

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

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

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

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--accent-primary);
    transition: all var(--transition-base);
    position: relative;
}

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

.nav-logo:hover {
    transform: scale(1.1);
}

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

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

.nav-link {
    font-weight: 500;
    position: relative;
    transition: color var(--transition-base);
    padding: 0.25rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    transition: width var(--transition-base);
}

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

/* Theme Toggle Button */
.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-bounce);
    position: relative;
    overflow: hidden;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    transition: opacity var(--transition-base);
    border-radius: 50%;
}

.theme-toggle:hover::before {
    opacity: 1;
}

.theme-toggle:hover {
    transform: rotate(180deg) scale(1.15);
    border-color: transparent;
}

.theme-toggle:hover svg {
    color: #ffffff;
}

.sun-icon,
.moon-icon {
    color: var(--text-primary);
    transition: all var(--transition-base);
    position: relative;
    z-index: 1;
}

body.dark-mode .sun-icon {
    display: none;
}

body.dark-mode .moon-icon {
    display: block;
}

body:not(.dark-mode) .sun-icon {
    display: block;
}

body:not(.dark-mode) .moon-icon {
    display: none;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    opacity: 0.08;
    z-index: -1;
    animation: gradientShift 15s ease-in-out infinite;
    will-change: transform;
}

@keyframes gradientShift {
    0%, 100% {
        transform: translateX(0) translateY(0) scale(1);
    }
    33% {
        transform: translateX(50px) translateY(30px) scale(1.05);
    }
    66% {
        transform: translateX(-30px) translateY(50px) scale(1.02);
    }
}

.hero-content {
    text-align: center;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

.wave {
    display: inline-block;
    animation: wave 2.5s ease-in-out infinite;
    transform-origin: 70% 70%;
}

@keyframes wave {
    0%, 100% {
        transform: rotate(0deg);
    }
    10%, 30% {
        transform: rotate(14deg);
    }
    20% {
        transform: rotate(-8deg);
    }
    40%, 60% {
        transform: rotate(14deg);
    }
    50% {
        transform: rotate(-8deg);
    }
    70%, 90% {
        transform: rotate(0deg);
    }
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end), var(--gradient-accent));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    animation: fadeIn 1s ease 0.2s backwards, shimmer 3s ease-in-out infinite;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes shimmer {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.typing-container {
    font-size: 1.5rem;
    color: var(--accent-secondary);
    font-family: var(--font-mono);
    margin-bottom: 2rem;
    min-height: 40px;
    animation: fadeIn 1s ease 0.4s backwards;
}

.typing-text {
    display: inline;
}

.cursor {
    display: inline-block;
    animation: blink 1s step-end infinite;
    font-weight: 700;
}

@keyframes blink {
    0%, 49% {
        opacity: 1;
    }
    50%, 100% {
        opacity: 0;
    }
}

.hero-quote {
    margin: 2rem 0;
    animation: fadeIn 1s ease 0.6s backwards, floatSoft 6s ease-in-out infinite;
}

@keyframes floatSoft {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

.quote-img {
    margin: 0 auto;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.quote-img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    animation: fadeIn 1s ease 0.8s backwards;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-base);
    display: inline-block;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
    color: #ffffff;
    border: 2px solid var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent-primary));
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

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

.btn-secondary:hover {
    background: var(--accent-primary);
    color: #ffffff;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.75rem;
    font-weight: 600;
    text-align: center;
    margin: 3rem 0 2rem;
    color: var(--text-primary);
}

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

.about-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.about-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--gradient-start) 0%, transparent 50%, var(--gradient-end) 100%);
    opacity: 0;
    transition: opacity var(--transition-slow);
    z-index: -1;
}

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

.about-card:hover::after {
    opacity: 0.05;
}

.about-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-primary);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: float 3s ease-in-out infinite;
    transition: transform var(--transition-bounce);
}

.about-card:hover .card-icon {
    transform: scale(1.2) rotate(5deg);
}

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

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    transition: color var(--transition-base);
}

.about-card:hover h3 {
    color: var(--accent-primary);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   Skills Section
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.skill-item {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-base);
    position: relative;
}

.skill-item::before {
    content: '';
    position: absolute;
    inset: -10px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    border-radius: 12px;
    transition: opacity var(--transition-base);
    z-index: -1;
    filter: blur(20px);
}

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

.skill-item img {
    width: 60px;
    height: 60px;
    transition: all var(--transition-bounce);
    filter: grayscale(0.2);
    border-radius: 8px;
}

.skill-item:hover img {
    transform: scale(1.25) rotate(5deg) translateY(-5px);
    filter: grayscale(0) drop-shadow(0 10px 20px rgba(59, 130, 246, 0.3));
}

.os-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

.os-grid img {
    transition: all var(--transition-base);
    border-radius: 8px;
}

.os-grid img:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Stats Section
   ============================================ */
.stats-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}

.stat-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

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

.stat-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-primary);
}

.stat-card img {
    border-radius: 8px;
    transition: transform var(--transition-base);
}

.stat-card:hover img {
    transform: scale(1.05);
}

.contribution-graph {
    margin-top: 2rem;
    text-align: center;
}

.contribution-graph img {
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.contribution-graph img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

/* 3D Contribution Graph */
.contribution-3d {
    margin-top: 2rem;
    text-align: center;
    position: relative;
}

.contribution-3d img {
    margin: 0 auto;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-slow);
    background: var(--bg-card);
    padding: 1rem;
}

.contribution-3d img:hover {
    transform: perspective(1000px) rotateY(2deg) rotateX(2deg) scale(1.03);
    box-shadow: 0 25px 50px rgba(59, 130, 246, 0.35);
}

/* ============================================
   Featured Project Section
   ============================================ */
.featured-project {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    margin-bottom: 4rem;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-slow);
}

.featured-project::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.featured-project::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--gradient-start) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
}

.featured-project:hover::before {
    transform: scaleX(1);
}

.featured-project:hover::after {
    opacity: 0.05;
}

.featured-project:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-primary);
}

.featured-project-content {
    text-align: center;
}

.featured-project-icon {
    display: inline-block;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
    animation: float 3s ease-in-out infinite;
    transition: all var(--transition-bounce);
}

.featured-project:hover .featured-project-icon {
    transform: scale(1.15) rotate(5deg);
}

.featured-project-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s ease-in-out infinite;
}

.featured-project-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.featured-project-tags {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.tag {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-primary);
    transition: all var(--transition-bounce);
    position: relative;
    overflow: hidden;
}

.tag::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.tag:hover::before {
    opacity: 1;
}

.tag:hover {
    color: #ffffff;
    transform: translateY(-2px) scale(1.05);
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.tag span {
    position: relative;
    z-index: 1;
}

.featured-project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
    color: #ffffff;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.125rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    z-index: 1;
    box-shadow: var(--shadow-md);
}

.featured-project-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.featured-project-link:hover::before {
    width: 350px;
    height: 350px;
}

.featured-project-link:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent-primary));
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-xl);
    color: #ffffff;
}

.featured-project-link svg {
    transition: transform var(--transition-bounce);
}

.featured-project-link:hover svg {
    transform: translateX(8px);
}

/* Add responsive styles for featured project */
@media (max-width: 768px) {
    .featured-project {
        padding: 2rem 1.5rem;
    }
    
    .featured-project-title {
        font-size: 1.5rem;
    }
    
    .featured-project-description {
        font-size: 1rem;
    }
    
    .featured-project-link {
        font-size: 1rem;
        padding: 0.875rem 2rem;
    }
}

/* ============================================
   Badges Section
   ============================================ */
.badges {
    background: var(--bg-primary);
    --badge-border-radius: 16px;
}

.badges-container {
    text-align: center;
    margin-top: 2rem;
    padding: 2rem 0;
}

.holopin-link {
    display: inline-block;
    transition: all var(--transition-base);
    border-radius: var(--badge-border-radius);
    overflow: hidden;
    position: relative;
}

.holopin-link::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    border-radius: var(--badge-border-radius);
    transition: opacity var(--transition-base);
    z-index: -1;
    filter: blur(15px);
}

.holopin-link:hover::before {
    opacity: 0.4;
}

.holopin-link:hover {
    transform: translateY(-8px) scale(1.02);
}

.holopin-board {
    max-width: 100%;
    width: 100%;
    height: auto;
    border-radius: var(--badge-border-radius);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    background: var(--bg-card);
}

.holopin-link:hover .holopin-board {
    box-shadow: var(--shadow-xl);
}

/* Responsive adjustments for badges */
@media (max-width: 768px) {
    .badges {
        --badge-border-radius: 8px;
    }
    
    .badges-container {
        padding: 1rem 0;
    }
}

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

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

.social-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-link {
    width: 60px;
    height: 60px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-bounce);
    position: relative;
    overflow: visible;
}

.social-link::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.social-link::after {
    content: '';
    position: absolute;
    inset: -10px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    opacity: 0;
    filter: blur(20px);
    transition: opacity var(--transition-base);
    z-index: -2;
}

.social-link:hover::before {
    opacity: 1;
}

.social-link:hover::after {
    opacity: 0.5;
}

.social-link:hover {
    transform: translateY(-8px) scale(1.15) rotate(5deg);
    color: #ffffff;
    border-color: transparent;
    box-shadow: var(--shadow-xl);
}

.social-link svg {
    width: 32px;
    height: 32px;
    transition: all var(--transition-base);
    position: relative;
    z-index: 1;
}

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

.footer p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-tagline {
    font-size: 0.875rem;
    opacity: 0.7;
}

/* ============================================
   Animations
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation for grid children */
.about-grid .about-card.fade-in {
    transition-delay: calc(var(--index, 0) * 0.1s);
}

.skills-grid .skill-item {
    animation: fadeInScale 0.6s cubic-bezier(0.4, 0, 0.2, 1) backwards;
    animation-delay: calc(var(--index, 0) * 0.03s);
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero-name {
        font-size: 3rem;
    }
    
    .about-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
    }
    
    .nav-link {
        font-size: 0.875rem;
    }
    
    .hero {
        padding-top: 100px;
    }
    
    .hero-name {
        font-size: 2.5rem;
    }
    
    .typing-container {
        font-size: 1.25rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
        gap: 1rem;
    }
    
    .skill-item img {
        width: 50px;
        height: 50px;
    }
    
    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2rem;
    }
    
    .typing-container {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .nav-menu {
        gap: 0.5rem;
    }
    
    .nav-link {
        display: none;
    }
    
    .nav-link:nth-child(1),
    .nav-link:nth-child(4) {
        display: block;
    }
}

/* ============================================
   Prefers Color Scheme
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root:not(.light-mode) {
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-card: rgba(59, 130, 246, 0.1);
        --text-primary: #dbeafe;
        --text-secondary: #93c5fd;
        --accent-primary: #60a5fa;
        --accent-secondary: #93c5fd;
        --accent-hover: #3b82f6;
        --border-color: #1e3a8a;
        --shadow-sm: 0 1px 3px rgba(59, 130, 246, 0.3);
        --shadow-md: 0 4px 6px rgba(59, 130, 246, 0.4);
        --shadow-lg: 0 10px 20px rgba(59, 130, 246, 0.5);
        --shadow-xl: 0 20px 40px rgba(59, 130, 246, 0.6);
        --nav-bg: rgba(15, 23, 42, 0.85);
        --gradient-start: #60a5fa;
        --gradient-end: #3b82f6;
        --gradient-accent: #93c5fd;
    }
}

/* ============================================
   Accessibility - Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0s !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0s !important;
        scroll-behavior: auto !important;
    }
    
    .wave,
    .card-icon,
    .hero-background {
        animation: none !important;
    }
}

/* ============================================
   Smooth Scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 6px;
    border: 3px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

/* ============================================
   Selection Styling
   ============================================ */
::selection {
    background: var(--accent-primary);
    color: #ffffff;
}

::-moz-selection {
    background: var(--accent-primary);
    color: #ffffff;
}