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

:root {
    /* Light Theme Colors */
    --primary-color: #dc2626;
    --secondary-color: #991b1b;
    --accent-color: #ef4444;
    --text-primary: #000000;
    --text-secondary: #374151;
    --text-light: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 10px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --border-radius-lg: 12px;
}

[data-theme="dark"] {
    /* Dark Theme Colors */
    --primary-color: #ef4444;
    --secondary-color: #dc2626;
    --accent-color: #f87171;
    --text-primary: #ffffff;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #262626;
    --border-color: #404040;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.5);
    --shadow-heavy: 0 10px 15px rgba(0, 0, 0, 0.5);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: var(--transition);
}

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

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 7rem;
    right: 2rem;
    transform: translateY(-50%);
    background: var(--primary-color);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
    z-index: 1001;
    box-shadow: var(--shadow-medium);
}

.theme-toggle:hover {
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-heavy);
}

/* 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);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 15, 15, 0.95);
}

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

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

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

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

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

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

/* Hero Animations */
.hero-animations {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* Neural Network Animation */
.neural-network {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.neural-node {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: neuralPulse 3s ease-in-out infinite;
    box-shadow: 0 0 15px var(--primary-color);
}

.neural-node:nth-child(odd) {
    animation-delay: 0.5s;
}

.neural-node:nth-child(even) {
    animation-delay: 1s;
}

.neural-connections {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

.neural-connection {
    stroke: var(--primary-color);
    stroke-width: 0.2;
    stroke-dasharray: 2;
    animation: neuralFlow 4s linear infinite;
}

/* AI Code Snippets */
.ai-code-snippets {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.ai-code-snippet {
    position: absolute;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    opacity: 0;
    animation: aiCodeFloat 10s ease-in-out infinite;
    background: rgba(220, 38, 38, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(220, 38, 38, 0.3);
    box-shadow: 0 4px 15px rgba(220, 38, 38, 0.2);
}

.ai-code-snippet:nth-child(1) {
    top: 15%;
    left: 5%;
    animation-delay: 0s;
}

.ai-code-snippet:nth-child(2) {
    top: 70%;
    right: 20%;
    animation-delay: 2s;
}

.ai-code-snippet:nth-child(3) {
    top: 45%;
    right: 5%;
    animation-delay: 4s;
}

.ai-code-snippet:nth-child(4) {
    top: 80%;
    left: 30%;
    animation-delay: 6s;
}

.ai-code-snippet:nth-child(5) {
    top: 25%;
    left: 70%;
    animation-delay: 1s;
}

.code-keyword {
    color: var(--primary-color);
    font-weight: bold;
}

.code-function {
    color: var(--accent-color);
    font-weight: 600;
}

.code-variable {
    color: var(--secondary-color);
}

.code-string {
    color: #10b981;
}

.code-comment {
    color: var(--text-light);
    font-style: italic;
}

/* Data Flow Animation */
.data-flow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.data-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: dataFlow 8s linear infinite;
    box-shadow: 0 0 8px var(--accent-color);
}

.data-particle:nth-child(1) {
    top: 20%;
    left: 0;
    animation: dataFlowHorizontal 6s linear infinite;
}

.data-particle:nth-child(2) {
    top: 50%;
    left: 0;
    animation: dataFlowHorizontal 8s linear infinite;
}

.data-particle:nth-child(3) {
    top: 80%;
    left: 0;
    animation: dataFlowHorizontal 7s linear infinite;
}

.data-particle:nth-child(4) {
    top: 0;
    left: 30%;
    animation: dataFlowVertical 5s linear infinite;
}

.data-particle:nth-child(5) {
    top: 0;
    left: 70%;
    animation: dataFlowVertical 9s linear infinite;
}

/* AI Icons */
.ai-icons {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.ai-icon {
    position: absolute;
    font-size: 2.5rem;
    color: var(--primary-color);
    opacity: 0;
    animation: aiIconFloat 8s ease-in-out infinite;
    filter: drop-shadow(0 0 10px rgba(220, 38, 38, 0.5));
}

.ai-icon:nth-child(1) {
    top: 20%;
    left: 75%;
    animation-delay: 0.5s;
}

.ai-icon:nth-child(2) {
    top: 65%;
    left: 15%;
    animation-delay: 1.5s;
}

.ai-icon:nth-child(3) {
    top: 35%;
    left: 85%;
    animation-delay: 2.5s;
}

.ai-icon:nth-child(4) {
    top: 55%;
    right: 10%;
    animation-delay: 3.5s;
}

.ai-icon:nth-child(5) {
    top: 25%;
    left: 25%;
    animation-delay: 4.5s;
}

.ai-icon:nth-child(6) {
    top: 75%;
    right: 25%;
    animation-delay: 5.5s;
    color: #3776ab;
}

/* Matrix Rain Effect */
.matrix-rain {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.matrix-column {
    position: absolute;
    top: -100px;
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    color: var(--primary-color);
    opacity: 0.4;
    animation: matrixFall 8s linear infinite;
    user-select: none;
    pointer-events: none;
}

.matrix-column:nth-child(odd) {
    animation-duration: 6s;
}

.matrix-column:nth-child(even) {
    animation-duration: 10s;
}

.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 1000 1000"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23000" opacity="0.02"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.hero-container {
    text-align: center;
    z-index: 2;
    position: relative;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    opacity: 0;
    animation: fadeInUp 1s ease 0.2s forwards;
}

.highlight {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    opacity: 0;
    animation: fadeInUp 1s ease 0.4s forwards;
}

.typewriter {
    color: var(--primary-color);
    font-weight: 600;
}

.cursor {
    animation: blink 1s infinite;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 1s ease 0.8s forwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

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

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    font-size: 1.5rem;
    color: var(--text-light);
}

/* Section Styles */
section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.about-image {
    text-align: center;
}

.profile-img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-heavy);
    transition: var(--transition);
}

.profile-img:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.15);
}

.about-bio p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-tabs {
    margin-top: 2rem;
}

.tab-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.tab-content {
    position: relative;
    min-height: 400px;
    margin-bottom: 2rem;
}

.tab-pane {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    min-height: 350px;
}

.tab-pane.active {
    opacity: 1;
    visibility: visible;
    position: static;
}

.timeline-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.timeline-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.timeline-date {
    flex-shrink: 0;
    width: 120px;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.9rem;
}

.timeline-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.company {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.6;
}

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

.skill-category {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.category-header i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.category-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.skill-name {
    flex-shrink: 0;
    width: 100px;
    font-weight: 500;
}

.skill-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    width: 0;
    transition: width 2s ease;
    border-radius: 4px;
}

.skill-percentage {
    flex-shrink: 0;
    width: 40px;
    text-align: right;
    font-weight: 600;
    color: var(--primary-color);
}

.soft-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.soft-skill-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.soft-skill-badge:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* Portfolio & Projects Sections */
.portfolio {
    background: var(--bg-secondary);
}

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

.project-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
}

.project-image {
    position: relative;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 250px;
    object-fit: fit;
    transition: var(--transition);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(79, 70, 229, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: white;
    color: var(--primary-color);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.project-link:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.project-content {
    padding: 1.5rem;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

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

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.contact-info p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.contact-details {
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.contact-item i {
    width: 20px;
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

.contact-form {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-light);
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;

}
.form-group input::placeholder {
    color: transparent;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: var(--text-light);
    transition: var(--transition);
    pointer-events: none;
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -0.5rem;
    left: 0.75rem;
    font-size: 0.8rem;
    color: var(--primary-color);
    background: var(--bg-primary);
    padding: 0 0.5rem;
}

/* Footer */
.footer {
    background: var(--bg-tertiary);
    padding: 2rem 0;
    text-align: center;
}

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

.footer-content i {
    color: #ef4444;
}

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

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 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 neuralPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 15px var(--primary-color);
    }
    50% {
        transform: scale(1.3);
        box-shadow: 0 0 25px var(--primary-color);
    }
}

@keyframes neuralFlow {
    0% {
        stroke-dashoffset: 10;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

@keyframes aiCodeFloat {
    0% {
        opacity: 0;
        transform: translateY(30px) rotateX(10deg);
    }
    20%, 80% {
        opacity: 0.9;
        transform: translateY(0) rotateX(0deg);
    }
    100% {
        opacity: 0;
        transform: translateY(-30px) rotateX(-10deg);
    }
}

@keyframes dataFlowHorizontal {
    0% {
        left: -5%;
        opacity: 0;
    }
    10%, 90% {
        opacity: 1;
    }
    100% {
        left: 105%;
        opacity: 0;
    }
}

@keyframes dataFlowVertical {
    0% {
        top: -5%;
        opacity: 0;
    }
    10%, 90% {
        opacity: 1;
    }
    100% {
        top: 105%;
        opacity: 0;
    }
}

@keyframes aiIconFloat {
    0%, 100% {
        opacity: 0;
        transform: translateY(0) scale(1) rotate(0deg);
    }
    50% {
        opacity: 0.8;
        transform: translateY(-15px) scale(1.2) rotate(5deg);
    }
}

@keyframes matrixFall {
    0% {
        top: -100px;
        opacity: 0;
    }
    10% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.8;
    }
    100% {
        top: 100vh;
        opacity: 0;
    }
}

/* Fade In Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--bg-primary);
        flex-direction: column;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-medium);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1rem 0;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .tab-buttons {
        flex-direction: column;
        gap: 0.5rem;
        margin-bottom: 1.5rem;
    }
    
    .tab-btn {
        width: 100%;
        justify-content: center;
    }
    
    .tab-content {
        margin-bottom: 3rem;
    }
    
    .tab-pane {
        min-height: auto;
    }
    
    .tab-pane.active {
        position: static;
    }
    
    .timeline-item {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .timeline-date {
        width: auto;
        font-size: 0.8rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .skill-category {
        padding: 1.5rem;
    }
    
    .skill-item {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
    
    .skill-name {
        width: auto;
        margin-bottom: 0.25rem;
    }
    
    .skill-bar {
        width: 100%;
        margin-bottom: 0.25rem;
    }
    
    .skill-percentage {
        width: auto;
        text-align: left;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .theme-toggle {
        right: 1rem;
    }
    
    /* Hide complex animations on mobile for performance */
    .ai-code-snippets,
    .matrix-rain,
    .neural-connections {
        display: none;
    }
    
    .neural-node {
        width: 6px;
        height: 6px;
    }
    
    .data-particle {
        display: none;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .about-content {
        gap: 2rem;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .portfolio-grid,
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tab-content {
        min-height: 300px;
    }
    
    .tab-pane.active {
        position: static;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .portfolio-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-img {
        width: 250px;
        height: 250px;
    }
    
    .ai-code-snippet {
        font-size: 0.7rem;
        padding: 0.25rem 0.5rem;
    }
    
    .ai-icon {
        font-size: 1.8rem;
    }
    
    .neural-node {
        width: 8px;
        height: 8px;
    }
    
    .data-particle {
        width: 3px;
        height: 3px;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

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

/* Selection */
::selection {
    background: var(--primary-color);
    color: white;
}

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