:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --gray-color: #6b7280;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f8fafc;
    color: var(--dark-color);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: white;
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo span {
    color: var(--dark-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: var(--transition);
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--dark-color);
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 40px;
}

.hero-text {
    flex: 1;
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    width: 100%;
    max-width: 350px;
    border-radius: 50%;
    border: 8px solid white;
    box-shadow: var(--box-shadow);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.hero h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.1rem;
    color: var(--gray-color);
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 28px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: var(--dark-color);
    margin-left: 10px;
}

.btn-secondary:hover {
    background-color: #374151;
}

/* Section Styling */
section {
    padding: 80px 0;
}

.section-bg {
    background-color: #f8fafc;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--dark-color);
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    width: 70px;
    height: 4px;
    background-color: var(--primary-color);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.section-subtitle {
    color: var(--gray-color);
    margin-top: 10px;
    font-size: 1.1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.skill-category {
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.skill-category h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    background-color: #e0f2fe;
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.skill-tag:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Projects Section */
.projects-container {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.project-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.project-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.project-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.project-tag {
    background-color: var(--primary-color);
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-content {
    padding: 30px;
}

.project-content h3 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.project-description {
    color: var(--gray-color);
    margin-bottom: 20px;
    line-height: 1.7;
}

.project-features {
    margin-bottom: 25px;
}

.project-features h4 {
    color: var(--dark-color);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.project-features ul {
    list-style-type: none;
    padding-left: 0;
}

.project-features li {
    padding: 5px 0;
    color: var(--gray-color);
    position: relative;
    padding-left: 25px;
}

.project-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.project-tech {
    margin-bottom: 20px;
}

.project-tech h4 {
    color: var(--dark-color);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-tags span {
    background-color: #f3f4f6;
    color: var(--dark-color);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

.project-role {
    background-color: #f0f9ff;
    padding: 15px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.project-role p {
    color: var(--dark-color);
    margin: 0;
}

/* Other Projects */
.other-projects {
    margin-top: 60px;
}

.other-projects h3 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--dark-color);
    font-size: 1.8rem;
}

.other-projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.mini-project-card {
    background-color: white;
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.mini-project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.mini-project-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.mini-project-card h4 {
    color: var(--dark-color);
    margin-bottom: 10px;
}

.mini-project-card p {
    color: var(--gray-color);
    font-size: 0.9rem;
}

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

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: var(--primary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

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

.timeline-content {
    padding: 20px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.timeline-content .company {
    color: var(--gray-color);
    font-weight: 500;
    margin-bottom: 10px;
}

.timeline-content .duration {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 15px;
    display: inline-block;
    background-color: #dbeafe;
    padding: 4px 12px;
    border-radius: 4px;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: white;
    border: 4px solid var(--primary-color);
    border-radius: 50%;
    top: 15px;
    z-index: 1;
}

.timeline-item:nth-child(odd)::after {
    right: -10px;
}

.timeline-item:nth-child(even)::after {
    left: -10px;
}

.project-reference {
    display: flex;
    align-items: center;
    margin-top: 10px;
    color: var(--primary-color);
    font-size: 0.9rem;
}

.project-reference i {
    margin-right: 8px;
}

/* Education Section */
.education-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.education-card {
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border-left: 5px solid var(--primary-color);
    transition: var(--transition);
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.education-card h3 {
    color: var(--dark-color);
    margin-bottom: 10px;
}

.education-card .institution {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 10px;
}

.education-card .details {
    color: var(--gray-color);
    margin-bottom: 5px;
}

.education-card .duration {
    color: var(--secondary-color);
    font-weight: 500;
    margin-top: 15px;
}

/* Contact Section */
.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-details {
    margin-top: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background-color: #e0f2fe;
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.contact-item h4 {
    margin-bottom: 5px;
    color: var(--dark-color);
}

.contact-item p, .contact-item a {
    color: var(--gray-color);
    text-decoration: none;
}

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

.contact-form {
    flex: 1;
    min-width: 300px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 40px 0;
    text-align: center;
}

footer .logo {
    color: white;
    margin-bottom: 10px;
}

footer .logo span {
    color: #93c5fd;
}

footer p {
    color: #d1d5db;
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0 30px;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

.copyright {
    color: #9ca3af;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-item:nth-child(odd)::after,
    .timeline-item:nth-child(even)::after {
        left: 21px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1