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

:root {
    /* Cyberpunk Color Palette inspired by avatar */
    --primary-color: #0ea5e9;
    --primary-dark: #0284c7;
    --secondary-color: #a855f7;
    --accent-color: #d946ef;
    --neon-cyan: #06b6d4;
    --neon-purple: #a855f7;
    --neon-pink: #ec4899;
    --background-light: #ffffff;
    --background-dark: #0f0f23;
    --surface-light: #f8fafc;
    --surface-dark: #1e1b4b;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --border-color: #e2e8f0;
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #a855f7 100%);
    --gradient-secondary: linear-gradient(135deg, #a855f7 0%, #d946ef 100%);
    --gradient-cyberpunk: linear-gradient(135deg, #06b6d4 0%, #a855f7 50%, #ec4899 100%);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
}

/* Dark mode variables */
[data-theme="dark"] {
    --background-light: #0f0f23;
    --background-dark: #1e1b4b;
    --surface-light: #1e1b4b;
    --surface-dark: #312e81;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-light: #94a3b8;
    --border-color: #334155;
}

/* Dark mode specific overrides */
[data-theme="dark"] .about,
[data-theme="dark"] .skills,
[data-theme="dark"] .projects,
[data-theme="dark"] .experience,
[data-theme="dark"] .contact {
    background: var(--background-dark);
}

[data-theme="dark"] .project-card,
[data-theme="dark"] .skill-category,
[data-theme="dark"] .timeline-content {
    background: var(--surface-light);
    border-color: var(--border-color);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 15, 35, 0.95);
    border-color: rgba(6, 182, 212, 0.3);
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(15, 15, 35, 0.98) !important;
    border-color: rgba(6, 182, 212, 0.4);
    box-shadow: 0 4px 6px -1px rgba(6, 182, 212, 0.1), 0 2px 4px -1px rgba(6, 182, 212, 0.06);
}

[data-theme="dark"] .footer {
    background: var(--background-dark);
    border-color: var(--border-color);
}

/* Smooth theme transitions */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

:root {
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background-color: var(--background-light);
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition-base);
    position: relative;
}

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

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

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

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

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--radius-lg);
    background: var(--surface-light);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-base);
    font-size: 1rem;
    box-shadow: var(--shadow-sm);
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

#theme-icon {
    transition: transform 0.3s ease;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: var(--transition-base);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #0f0f23 0%, #1e1b4b 50%, #312e81 100%);
    overflow: hidden;
    padding-top: 80px; /* Account for fixed navbar */
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e2e8f0" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
    z-index: 1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hero-content {
    animation: slideInLeft 0.8s ease-out;
    background: rgba(15, 15, 35, 0.4);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.greeting {
    display: block;
    font-size: 1.25rem;
    color: #cbd5e1;
    margin-bottom: var(--spacing-sm);
}

.name {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--gradient-cyberpunk);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #94a3b8;
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.hero-description {
    font-size: 1.125rem;
    color: #cbd5e1;
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-lg), 0 0 20px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(6, 182, 212, 0.5);
}

.btn-secondary {
    background: rgba(15, 15, 35, 0.8);
    color: var(--primary-color);
    border-color: var(--primary-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(6, 182, 212, 0.2);
    border-color: var(--secondary-color);
    color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(6, 182, 212, 0.3);
}

.hero-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: rgba(15, 15, 35, 0.6);
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition-base);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(6, 182, 212, 0.3);
    backdrop-filter: blur(10px);
}

.social-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(6, 182, 212, 0.4);
    color: var(--secondary-color);
    border-color: var(--secondary-color);
    background: rgba(168, 85, 247, 0.2);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    animation: slideInRight 0.8s ease-out;
}

.avatar-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.hero-avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid transparent;
    background: var(--gradient-cyberpunk);
    padding: 4px;
    box-shadow: 
        0 0 30px rgba(6, 182, 212, 0.3),
        0 0 60px rgba(168, 85, 247, 0.2),
        0 0 90px rgba(236, 72, 153, 0.1);
    animation: avatarPulse 3s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

.avatar-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: radial-gradient(circle, 
        rgba(6, 182, 212, 0.2) 0%, 
        rgba(168, 85, 247, 0.1) 50%, 
        transparent 70%);
    animation: glowPulse 2s ease-in-out infinite alternate;
    z-index: 1;
}

.code-animation {
    background: var(--background-dark);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    min-width: 300px;
}

.code-line {
    margin-bottom: var(--spacing-sm);
    animation: typewriter 1s ease-in-out both;
}

.code-line:nth-child(1) { animation-delay: 0.5s; }
.code-line:nth-child(2) { animation-delay: 0.8s; }
.code-line:nth-child(3) { animation-delay: 1.1s; }
.code-line:nth-child(4) { animation-delay: 1.4s; }

.code-keyword { color: var(--secondary-color); }
.code-module { color: var(--primary-color); }
.code-variable { color: #f1f5f9; }
.code-class { color: var(--accent-color); }
.code-method { color: #fbbf24; }
.code-string { color: #34d399; }

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border: 2px solid var(--primary-color);
    border-top: none;
    border-right: none;
    transform: rotate(-45deg);
    animation: bounce 2s infinite;
}

/* Section Styles */
section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* About Section */
.about {
    background: var(--surface-light);
    position: relative;
}

.about .section-title {
    position: relative;
    padding-left: var(--spacing-md);
}

.about .section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.about .section-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: var(--spacing-md);
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.about:hover .section-title::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-color) 50%, transparent 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-intro {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

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

.stat {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--background-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    border-top: 4px solid var(--primary-color);
}

.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 0%, rgba(37, 99, 235, 0.03) 50%, transparent 100%);
    opacity: 0;
    transition: var(--transition-base);
    z-index: 1;
}

.stat::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
    transition: left 0.8s ease;
    z-index: 2;
}

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

.stat:hover::after {
    left: 100%;
}

.stat:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-top-color: var(--primary-dark);
}

.stat > * {
    position: relative;
    z-index: 3;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-base);
}

.stat:hover .stat-number {
    color: var(--primary-dark);
    transform: scale(1.05);
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-base);
}

.stat:hover .stat-label {
    color: var(--text-primary);
    transform: translateY(-2px);
}

.education-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    position: relative;
    padding-left: var(--spacing-md);
}

.education-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.education-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: var(--spacing-md);
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.about-education:hover .education-title::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-color) 50%, transparent 100%);
}

.education-item {
    background: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-md);
    position: relative;
    transition: var(--transition-base);
    border-left: 4px solid transparent;
    overflow: hidden;
}

.education-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 0%, rgba(37, 99, 235, 0.03) 50%, transparent 100%);
    opacity: 0;
    transition: var(--transition-base);
    z-index: 1;
}

.education-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--primary-color);
}

.education-item:hover::before {
    opacity: 1;
}

.education-item > * {
    position: relative;
    z-index: 2;
}

.education-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-base);
}

.education-item:hover h4 {
    color: var(--primary-color);
}

.education-school {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    transition: var(--transition-base);
    display: inline-block;
}

.education-item:hover .education-school {
    transform: translateX(2px);
}

.education-period,
.education-grade {
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: var(--transition-base);
    margin-bottom: var(--spacing-xs);
}

.education-period {
    position: relative;
    padding-left: var(--spacing-md);
}

.education-period::before {
    content: '📅';
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0.7;
}

.education-grade {
    position: relative;
    padding-left: var(--spacing-md);
    font-weight: 500;
}

.education-grade::before {
    content: '🏆';
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0.7;
}

.education-item:hover .education-period,
.education-item:hover .education-grade {
    color: var(--text-primary);
    transform: translateX(2px);
}

/* Experience Section */
/* Experience Section */
.experience {
    position: relative;
}

.experience .section-title {
    position: relative;
    padding-left: var(--spacing-md);
}

.experience .section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.experience .section-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: var(--spacing-md);
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.experience:hover .section-title::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-color) 50%, transparent 100%);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-3xl);
    padding-left: 80px;
    transition: var(--transition-base);
}

.timeline-marker {
    position: absolute;
    left: 23px;
    top: 8px;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 4px solid var(--background-light);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    z-index: 2;
}

.timeline-content {
    background: var(--background-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 0%, rgba(37, 99, 235, 0.03) 50%, transparent 100%);
    opacity: 0;
    transition: var(--transition-base);
    z-index: 1;
}

.timeline-content::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
    transition: left 0.8s ease;
    z-index: 2;
}

.timeline-item:hover .timeline-content::before {
    opacity: 1;
}

.timeline-item:hover .timeline-content::after {
    left: 100%;
}

.timeline-item:hover .timeline-content {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-left-color: var(--primary-dark);
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.2);
    background: var(--primary-dark);
    box-shadow: var(--shadow-lg);
}

.timeline-content > * {
    position: relative;
    z-index: 3;
}

.job-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-base);
}

.timeline-item:hover .job-title {
    color: var(--primary-color);
    transform: translateX(4px);
}

.company {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    transition: var(--transition-base);
}

.timeline-item:hover .company {
    color: var(--primary-dark);
    transform: translateX(2px);
}

.period {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    transition: var(--transition-base);
}

.timeline-item:hover .period {
    color: var(--text-primary);
    transform: translateX(2px);
}

.job-responsibilities {
    list-style: none;
}

.job-responsibilities li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    transition: var(--transition-base);
}

.job-responsibilities li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    transition: var(--transition-base);
}

.timeline-item:hover .job-responsibilities li {
    color: var(--text-primary);
    transform: translateX(2px);
}

.timeline-item:hover .job-responsibilities li::before {
    color: var(--primary-dark);
    transform: scale(1.1);
}

/* Skills Section */
.skills {
    background: var(--surface-light);
    position: relative;
}

.skills .section-title {
    position: relative;
    padding-left: var(--spacing-md);
}

.skills .section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.skills .section-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: var(--spacing-md);
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.skills:hover .section-title::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-color) 50%, transparent 100%);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.skill-category {
    background: var(--background-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    border-left: 4px solid var(--primary-color);
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 0%, rgba(37, 99, 235, 0.03) 50%, transparent 100%);
    opacity: 0;
    transition: var(--transition-base);
    z-index: 1;
}

.skill-category::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
    transition: left 0.6s ease;
    z-index: 2;
}

.skill-category:hover::before {
    opacity: 1;
}

.skill-category:hover::after {
    left: 100%;
}

.skill-category:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-left-color: var(--primary-dark);
}

.skill-category > * {
    position: relative;
    z-index: 3;
}

.category-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    transition: var(--transition-base);
}

.skill-category:hover .category-title {
    color: var(--primary-color);
    transform: translateX(2px);
}

.category-title i {
    color: var(--primary-color);
    font-size: 1.5rem;
    transition: transform 0.3s ease, color 0.3s ease;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface-light);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.skill-tag::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 0.5s ease;
}

.skill-category:hover .skill-tag::before {
    left: 100%;
}

.skill-tag:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    border-color: var(--primary-color);
}

/* Projects Section */
.projects {
    position: relative;
}

.projects .section-title {
    position: relative;
    padding-left: var(--spacing-md);
}

.projects .section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.projects .section-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: var(--spacing-md);
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.projects:hover .section-title::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-color) 50%, transparent 100%);
}

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

.project-card {
    background: var(--background-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    border-top: 4px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.05), transparent);
    transition: left 0.8s ease;
}

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

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

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.3s ease, transform 0.3s ease;
}

.project-period {
    color: var(--text-secondary);
    font-size: 0.875rem;
    white-space: nowrap;
    transition: color 0.3s ease, transform 0.3s ease;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--surface-light);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.tech-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
    transition: left 0.6s ease;
}

.project-card:hover .tech-tag::before {
    left: 100%;
}

.tech-tag:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

/* Contact Section */
.contact {
    background: var(--surface-light);
    position: relative;
}

.contact .section-title {
    position: relative;
    padding-left: var(--spacing-md);
}

.contact .section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.contact .section-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: var(--spacing-md);
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.contact:hover .section-title::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-color) 50%, transparent 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    position: relative;
    padding-left: var(--spacing-md);
}

.contact-info h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.contact-info h3::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: var(--spacing-md);
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.contact-info:hover h3::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-color) 50%, transparent 100%);
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.contact-methods {
    margin-bottom: var(--spacing-xl);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--background-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    border-left: 4px solid var(--primary-color);
}

.contact-method::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 0%, rgba(37, 99, 235, 0.03) 50%, transparent 100%);
    opacity: 0;
    transition: var(--transition-base);
    z-index: 1;
}

.contact-method::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
    transition: left 0.8s ease;
    z-index: 2;
}

.contact-method:hover::before {
    opacity: 1;
}

.contact-method:hover::after {
    left: 100%;
}

.contact-method:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-left-color: var(--primary-dark);
}

.contact-method > * {
    position: relative;
    z-index: 3;
}

.contact-method i {
    color: var(--primary-color);
    font-size: 1.25rem;
    width: 24px;
    transition: var(--transition-base);
}

.contact-method:hover i {
    color: var(--primary-dark);
    transform: scale(1.1) rotate(5deg);
}

.contact-method h4 {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    transition: var(--transition-base);
}

.contact-method:hover h4 {
    color: var(--primary-color);
    transform: translateX(2px);
}

.contact-method p,
.contact-method a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-base);
}

.contact-method:hover p,
.contact-method:hover a {
    color: var(--text-primary);
    transform: translateX(2px);
}

.contact-method a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.contact-languages h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    position: relative;
    padding-left: var(--spacing-md);
}

.contact-languages h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.contact-languages h3::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: var(--spacing-md);
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.contact-languages:hover h3::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-color) 50%, transparent 100%);
}

.language-list {
    background: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.language-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    transition: var(--transition-base);
    cursor: pointer;
    overflow: hidden;
}

.language-item::before {
    content: '';
    position: absolute;
    left: -100%;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(66, 139, 202, 0.08),
        transparent
    );
    transition: left 0.5s ease;
    z-index: 1;
}

.language-item:hover::before {
    left: 100%;
}

.language-item:hover {
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
    margin-left: calc(-1 * var(--spacing-sm));
    margin-right: calc(-1 * var(--spacing-sm));
    border-radius: var(--border-radius-sm);
    background: rgba(66, 139, 202, 0.03);
}

.language-item:last-child {
    border-bottom: none;
}

.language {
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
    z-index: 2;
    transition: var(--transition-base);
}

.language-item:hover .language {
    color: var(--primary-color);
    transform: translateX(4px);
}

.proficiency {
    color: var(--text-secondary);
    font-size: 0.875rem;
    position: relative;
    z-index: 2;
    transition: var(--transition-base);
}

.language-item:hover .proficiency {
    color: var(--primary-dark);
    transform: translateX(-4px);
}

/* Contact Form Styles - Cyberpunk Theme */
.contact-form-section {
    background: linear-gradient(135deg, rgba(15, 15, 35, 0.95) 0%, rgba(30, 27, 75, 0.95) 100%);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: 
        var(--shadow-xl),
        0 0 30px rgba(6, 182, 212, 0.2),
        inset 0 0 50px rgba(168, 85, 247, 0.05);
    border: 1px solid rgba(6, 182, 212, 0.3);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
}

.contact-form-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-cyberpunk);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.contact-form-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="cyber-grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="%2306b6d4" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23cyber-grid)"/></svg>');
    opacity: 0.3;
    pointer-events: none;
    z-index: 1;
}

.contact-form-section h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    background: var(--gradient-cyberpunk);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 2;
    text-align: center;
    text-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.contact-form-section p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
    text-align: center;
    position: relative;
    z-index: 2;
    font-size: 1.05rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.form-group {
    display: flex;
    flex-direction: column;
    position: relative;
}

.form-group label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(6, 182, 212, 0.5);
    transition: var(--transition-base);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-lg);
    border: 2px solid rgba(6, 182, 212, 0.3);
    border-radius: var(--radius-lg);
    font-family: var(--font-family);
    font-size: 1rem;
    background: rgba(15, 15, 35, 0.8);
    color: var(--text-primary);
    transition: all 0.3s ease;
    outline: none;
    backdrop-filter: blur(10px);
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.2),
        0 0 0 0 rgba(6, 182, 212, 0);
    position: relative;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(148, 163, 184, 0.7);
    font-style: italic;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    background: rgba(15, 15, 35, 0.95);
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.2),
        0 0 20px rgba(6, 182, 212, 0.4),
        0 0 0 3px rgba(6, 182, 212, 0.1);
    transform: translateY(-2px);
    color: var(--text-primary);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: rgba(6, 182, 212, 0.6);
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.2),
        0 0 15px rgba(6, 182, 212, 0.2);
    transform: translateY(-1px);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
    line-height: 1.6;
    font-family: var(--font-family);
}

.form-group select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2306b6d4' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 16px center;
    background-repeat: no-repeat;
    background-size: 16px;
    padding-right: 50px;
    appearance: none;
}

.form-group select option {
    background: rgba(15, 15, 35, 0.95);
    color: var(--text-primary);
    padding: var(--spacing-sm);
}

.recaptcha-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: var(--spacing-lg) 0;
}

.g-recaptcha {
    transform: scale(0.95);
    transform-origin: 0 0;
}

.recaptcha-note {
    margin-top: var(--spacing-sm);
    text-align: center;
}

.recaptcha-note small {
    color: var(--text-secondary);
    font-size: 0.75rem;
    line-height: 1.4;
}

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

.recaptcha-note a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* reCAPTCHA v3 Notice - Cyberpunk Style */
.recaptcha-v3-notice {
    margin-top: var(--spacing-lg);
    text-align: center;
    opacity: 0.7;
    position: relative;
    z-index: 2;
}

.recaptcha-v3-notice small {
    color: var(--text-secondary);
    font-size: 0.75rem;
    line-height: 1.5;
    font-style: italic;
}

.recaptcha-v3-notice a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition-base);
    text-shadow: 0 0 5px rgba(6, 182, 212, 0.3);
}

.recaptcha-v3-notice a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
    text-shadow: 0 0 10px rgba(168, 85, 247, 0.5);
}

.form-submit-btn {
    align-self: center;
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    min-width: 200px;
    justify-content: center;
    transition: all 0.3s ease;
    background: var(--gradient-primary);
    color: white;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 
        var(--shadow-lg),
        0 0 20px rgba(6, 182, 212, 0.3);
}

.form-submit-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 0.8s ease;
}

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

.form-submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 
        var(--shadow-xl),
        0 0 30px rgba(6, 182, 212, 0.5),
        0 0 50px rgba(168, 85, 247, 0.3);
    background: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 50%, #a855f7 100%);
}

.form-submit-btn:active {
    transform: translateY(-1px);
}

.form-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
    background: rgba(100, 116, 139, 0.5);
    box-shadow: none;
}

.form-submit-btn:disabled:hover {
    transform: none !important;
    box-shadow: none !important;
}

.btn-text,
.btn-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: var(--transition-base);
    position: relative;
    z-index: 2;
}

.form-status {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-lg);
    font-weight: 500;
    text-align: center;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.form-status.show {
    opacity: 1;
    transform: translateY(0);
}

.form-status.success {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2) 0%, rgba(34, 197, 94, 0.1) 100%);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.4);
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.2);
}

.form-status.error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(239, 68, 68, 0.1) 100%);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.4);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.2);
}

/* Input validation states */
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: #ef4444;
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.2),
        0 0 15px rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.05);
}

.form-group.success input,
.form-group.success select,
.form-group.success textarea {
    border-color: #22c55e;
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.2),
        0 0 15px rgba(34, 197, 94, 0.3);
    background: rgba(34, 197, 94, 0.05);
}

.error-message {
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: var(--spacing-sm);
    display: none;
    font-weight: 500;
    text-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}

.form-group.error .error-message {
    display: block;
    animation: slideInError 0.3s ease-out;
}

@keyframes slideInError {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Footer */
.footer {
    background: var(--background-dark);
    color: var(--text-light);
    text-align: center;
    padding: var(--spacing-xl) 0;
}

/* Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes typewriter {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes educationSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes skillSlideIn {
    from {
        opacity: 0;
        transform: translateX(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes projectSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes experienceSlideIn {
    from {
        opacity: 0;
        transform: translateX(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes statSlideIn {
    from {
        opacity: 0;
        transform: translateY(25px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes skillPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

@keyframes projectPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.01);
    }
}

@keyframes educationPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

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

@keyframes underlinePulse {
    0%, 100% {
        opacity: 1;
        transform: scaleX(1);
    }
    50% {
        opacity: 0.8;
        transform: scaleX(0.98);
    }
}

@keyframes avatarPulse {
    0%, 100% {
        box-shadow: 
            0 0 30px rgba(6, 182, 212, 0.3),
            0 0 60px rgba(168, 85, 247, 0.2),
            0 0 90px rgba(236, 72, 153, 0.1);
        transform: scale(1);
    }
    50% {
        box-shadow: 
            0 0 40px rgba(6, 182, 212, 0.5),
            0 0 80px rgba(168, 85, 247, 0.3),
            0 0 120px rgba(236, 72, 153, 0.2);
        transform: scale(1.02);
    }
}

@keyframes glowPulse {
    0% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1);
    }
    100% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* Animation classes */
.education-item.animate-in {
    animation: educationSlideIn 0.6s ease-out forwards;
}

.skill-category.animate-in {
    animation: skillSlideIn 0.6s ease-out forwards;
}

.project-card.animate-in {
    animation: projectSlideIn 0.6s ease-out forwards;
}

.timeline-item.animate-in {
    animation: experienceSlideIn 0.8s ease-out forwards;
}

.stat.animate-in {
    animation: statSlideIn 0.7s ease-out forwards;
}

.education-item:hover {
    animation: educationPulse 0.3s ease-in-out;
}

.skill-category:hover .category-title {
    animation: skillPulse 0.3s ease-in-out;
}

.project-card:hover .project-title {
    animation: projectPulse 0.3s ease-in-out;
}

/* Responsive Design */

/* Large Tablets and Small Laptops (900px - 1200px) */
@media (max-width: 1200px) and (min-width: 900px) {
    .hero-container {
        gap: var(--spacing-2xl);
        padding: 0 var(--spacing-xl);
    }
    
    .name {
        font-size: 3.25rem;
    }
    
    .code-animation {
        min-width: 280px;
    }
}

/* Portrait Tablets (600px - 900px width) */
@media (max-width: 900px) and (min-width: 600px) {
    .hero {
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-2xl);
        max-width: 600px;
        margin: 0 auto;
        padding: var(--spacing-xl);
        justify-items: center;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        width: 100%;
    }
    
    .hero-visual {
        order: -1;
        margin-bottom: var(--spacing-xl);
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    
    .avatar-container {
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-avatar {
        width: 150px;
        height: 150px;
    }
    
    .avatar-glow {
        width: 170px;
        height: 170px;
    }
    
    .code-animation {
        max-width: 350px;
        margin: 0 auto;
        width: 100%;
    }
    
    .name {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.375rem;
    }
    
    .hero-description {
        max-width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-xl);
        padding: 0 var(--spacing-md);
    }
    
    .greeting,
    .hero-subtitle {
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
        width: 100%;
    }
    
    .hero-social {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(15, 15, 35, 0.95);
        backdrop-filter: blur(20px);
        border: 1px solid rgba(6, 182, 212, 0.3);
        width: 100%;
        text-align: center;
        transition: var(--transition-base);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-xl) 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: var(--spacing-md) 0;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
        padding: var(--spacing-lg) var(--spacing-md) 0;
        justify-items: center;
        align-items: center;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        width: 100%;
        padding: var(--spacing-lg);
        margin: 0 auto;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .name {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
        text-align: center;
    }
    
    .hero-description {
        max-width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-xl);
        padding: 0 var(--spacing-md);
    }
    
    .greeting {
        text-align: center;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        width: 100%;
        gap: var(--spacing-md);
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .hero-social {
        justify-content: center;
        align-items: center;
        width: 100%;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .contact-form-section {
        padding: var(--spacing-lg);
    }
    
    .form-submit-btn {
        width: 100%;
        max-width: none;
        align-self: stretch;
    }
    
    .g-recaptcha {
        transform: scale(0.85);
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-marker {
        left: 7px;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-container {
        padding: var(--spacing-md);
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100%;
        gap: var(--spacing-md);
    }
    
    .name {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-description {
        text-align: center;
        max-width: 100%;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        width: 100%;
        gap: var(--spacing-sm);
    }
    
    .hero-social {
        justify-content: center;
        align-items: center;
        width: 100%;
        margin-top: var(--spacing-sm);
    }
    
    .social-link {
        width: 44px;
        height: 44px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-section {
        padding: var(--spacing-md);
        margin: 0 var(--spacing-xs);
    }
    
    .form-submit-btn {
        width: 100%;
        align-self: stretch;
    }
    
    .g-recaptcha {
        transform: scale(0.75);
    }
    
    .code-animation {
        min-width: 250px;
        padding: var(--spacing-md);
        font-size: 0.75rem;
    }
}