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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
}

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

.nav-link {
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #2563eb;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: width 0.3s ease;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.hero-text {
    width: 100%;
}

.hero-profile {
    margin-bottom: 30px;
    display: flex;
    justify-content: center;
    width: 100%;
}

.hero-profile-picture {
    width: 120px !important;
    height: 120px !important;
    border-radius: 50% !important;
    overflow: hidden !important;
    border: 3px solid rgba(255, 255, 255, 0.3) !important;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2) !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    display: block !important;
    position: relative;
    margin: 0 auto !important;
}

.hero-profile-picture:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3) !important;
}

.hero-profile-img {
    width: 120px !important;
    height: 120px !important;
    border-radius: 50% !important;
    object-fit: cover !important;
    object-position: center !important;
    display: block !important;
    max-width: 120px !important;
    max-height: 120px !important;
    border: none !important;
    outline: none !important;
}

/* Hide the placeholder icon when image loads */
.hero-profile-picture::before {
    display: none !important;
    content: none !important;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    opacity: 0;
    animation: fadeInUp 1s ease 0.5s forwards;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0;
    animation: fadeInUp 1s ease 0.7s forwards;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0;
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 1s ease 0.9s forwards;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    opacity: 0;
    animation: fadeInUp 1s ease 1.1s forwards;
    justify-content: center;
}

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: #ffffff;
    color: #2563eb;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #2563eb;
    transform: translateY(-2px);
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    color: #1e293b;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 2px;
}

/* About Section */
.about {
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #64748b;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: #f8fafc;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-item h3 {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 10px;
}

.stat-item p {
    color: #64748b;
    font-weight: 500;
}

/* Experience Section */
.experience {
    background: #f8fafc;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto 60px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: #e2e8f0;
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 60%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 60%;
}

.timeline-dot {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: #2563eb;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 0 0 4px #e2e8f0;
}

.timeline-content {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
}

.timeline-content h3 {
    color: #1e293b;
    margin-bottom: 5px;
}

.timeline-content h4 {
    color: #2563eb;
    margin-bottom: 10px;
}

.timeline-date {
    color: #64748b;
    font-weight: 500;
    font-size: 0.9rem;
}

.timeline-content p {
    margin-top: 15px;
    color: #64748b;
    line-height: 1.6;
}

/* Certifications */
.certifications {
    max-width: 800px;
    margin: 0 auto;
}

.certifications h3 {
    text-align: center;
    margin-bottom: 30px;
    color: #1e293b;
}

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

.cert-item {
    background: white;
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.cert-item:hover {
    transform: translateY(-5px);
}

.cert-item i {
    font-size: 2rem;
    color: #2563eb;
    margin-bottom: 15px;
}

.cert-item h4 {
    color: #1e293b;
    margin-bottom: 10px;
}

.cert-item p {
    color: #64748b;
    font-size: 0.9rem;
}

/* Skills Section */
.skills {
    background: white;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-category {
    background: #f8fafc;
    padding: 30px;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
}

.skill-category h3 {
    color: #1e293b;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-category i {
    color: #2563eb;
}

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

.skill-tag {
    background: white;
    color: #64748b;
    padding: 8px 15px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.skill-tag:hover {
    border-color: #2563eb;
    color: #2563eb;
    transform: translateY(-2px);
}

/* Projects Section */
.projects {
    background: #f8fafc;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.project-icon i {
    font-size: 1.5rem;
    color: white;
}

.project-card h3 {
    color: #1e293b;
    margin-bottom: 15px;
}

.project-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Interests Section */
.interests {
    background: white;
}

.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.interest-item {
    text-align: center;
    padding: 30px;
    background: #f8fafc;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.interest-item:hover {
    transform: translateY(-5px);
}

.interest-item i {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 15px;
}

.interest-item h3 {
    color: #1e293b;
    margin-bottom: 10px;
}

.interest-item p {
    color: #64748b;
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact .section-title {
    color: white;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.contact-item i {
    font-size: 2rem;
    margin-bottom: 10px;
}

.contact-item a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.contact-item a:hover {
    opacity: 0.8;
}

.contact .hero-buttons {
    justify-content: center !important;
    align-items: center !important;
    opacity: 1 !important;
    animation: none !important;
    display: flex !important;
    margin: 0 auto !important;
    width: 100% !important;
    text-align: center !important;
}

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

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
    }
    
    .hero-profile-picture {
        width: 100px;
        height: 100px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 60px;
        margin-right: 0;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-dot {
        left: 20px;
    }
    
    .contact-info {
        gap: 20px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-profile-picture {
        width: 80px;
        height: 80px;
    }
    
    .hero-profile-picture::before {
        font-size: 2rem;
    }
}