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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    line-height: 1.7;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: 2px solid transparent;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.btn-outline {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-outline:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.2);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    font-weight: 500;
    color: #333;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: all 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
    left: 0;
}

/* Mobile Menu */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #666;
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.hero-description {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

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

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

.social-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #667eea;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    color: white;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-img {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 8px solid white;
    transition: all 0.3s ease;
}

.profile-img:hover {
    transform: scale(1.05);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    font-weight: 300;
}

/* About Section */
.about {
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
}

.skills h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: #333;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.stat:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.stat h3 {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat p {
    color: #666;
    font-weight: 500;
    margin: 0;
}

/* Bio Section */
.bio {
    background: white;
}

.bio-content {
    max-width: 1000px;
    margin: 0 auto;
}

.bio-timeline {
    position: relative;
    margin-bottom: 4rem;
}

.bio-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 80px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 21px;
    top: 8px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: 4px solid white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2);
}

.timeline-year {
    position: absolute;
    left: -80px;
    top: 0;
    width: 70px;
    font-weight: 600;
    color: #667eea;
    font-size: 0.9rem;
    text-align: right;
}

.timeline-content {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.timeline-content:hover h3 a {
    pointer-events: auto;
}

.timeline-content h3 {
    color: #333;
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.timeline-content h3 a {
    color: #667eea;
    text-decoration: underline;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    z-index: 10;
}

.timeline-content h3 a:hover {
    color: #764ba2;
    text-decoration: none;
}

.timeline-content h4 {
    color: #667eea;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.timeline-content p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.achievements {
    list-style: none;
    padding: 0;
    margin-top: 1.5rem;
}

.achievements li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #666;
    line-height: 1.6;
}

.achievements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.bio-credentials {
    background: #f8f9fa;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.bio-credentials h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: #333;
    font-size: 1.5rem;
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.credential-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.credential-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.credential-item i {
    font-size: 2rem;
    color: #667eea;
    width: 40px;
    text-align: center;
}

.credential-item h4 {
    margin: 0 0 0.5rem 0;
    color: #333;
    font-size: 1.1rem;
}

.credential-item p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
}

.credential-item h4 a {
    color: #667eea;
    text-decoration: underline;
    font-weight: 600;
    transition: all 0.3s ease;
}

.credential-item h4 a:hover {
    color: #764ba2;
    text-decoration: none;
}

/* Rotating Gallery Section */
.rotating-gallery {
    max-width: 100%;
    margin: 0 auto;
}

.gallery-container {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    background: #f8f9fa;
}

.gallery-track {
    display: flex;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
}

.gallery-item {
    flex: 0 0 25%; /* Each item takes 25% width (4 items visible) */
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.gallery-item:hover {
    transform: scale(1.02);
}

.gallery-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
    transition: all 0.3s ease;
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 2rem 1.5rem 1.5rem;
    transform: translateY(100%);
    transition: all 0.3s ease;
    font-size: 0.9rem;
    text-align: center;
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-item:hover .gallery-img {
    transform: scale(1.05);
}

/* Gallery Controls */
.gallery-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 2rem;
}

.gallery-control-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.gallery-control-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.gallery-control-btn i {
    font-size: 1rem;
}

/* Gallery Indicators */
.gallery-indicators {
    display: flex;
    gap: 0.5rem;
}

.gallery-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ccc;
    cursor: pointer;
    transition: all 0.3s ease;
}

.gallery-indicator.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: scale(1.2);
}

.gallery-indicator:hover {
    background: #667eea;
    transform: scale(1.1);
}

/* Gallery Status */
.gallery-status {
    text-align: center;
    margin-top: 1rem;
    color: #666;
    font-size: 0.9rem;
}

.gallery-status.paused {
    color: #667eea;
    font-weight: 500;
}

/* Blog Section */
.blog {
    background: #f8f9fa;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.blog-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.blog-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: none; /* Hide blog images */
}

.blog-content {
    padding: 2rem;
}

.blog-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.blog-date {
    font-weight: 500;
}

.blog-category {
    background: #e3f2fd;
    color: #1976d2;
    padding: 0.2rem 0.8rem;
    border-radius: 15px;
    font-weight: 500;
}

.blog-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
}

.blog-excerpt {
    color: #666;
    margin-bottom: 1.5rem;
    font-size: 1rem;
    line-height: 1.6;
}

.blog-link {
    color: #667eea;
    font-weight: 600;
    transition: all 0.3s ease;
}

.blog-link:hover {
    color: #764ba2;
}

.blog-more {
    text-align: center;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.contact-item i {
    font-size: 1.5rem;
    color: #667eea;
    width: 30px;
    text-align: center;
}

.contact-item h4 {
    margin: 0;
    color: #333;
}

.contact-item p {
    margin: 0;
    color: #666;
}

.contact-item a {
    margin: 0;
    font-weight: 600;
    color: #667eea;
    text-decoration: underline;
    transition: all 0.3s ease;
}

.contact-item a:hover {
    color: #764ba2;
    text-decoration: none;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left p {
    margin: 0;
    color: #ccc;
}

.footer .social-links {
    gap: 1rem;
}

.footer .social-link {
    background: #555;
    color: #ccc;
}

.footer .social-link:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 1rem 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .profile-img {
        width: 300px;
        height: 300px;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-stats {
        flex-direction: row;
        justify-content: space-around;
    }

    .bio-timeline::before {
        left: 20px;
    }

    .timeline-item {
        padding-left: 60px;
    }

    .timeline-item::before {
        left: 11px;
    }

    .timeline-year {
        left: -60px;
        width: 50px;
        font-size: 0.8rem;
    }

    .timeline-content {
        padding: 1.5rem;
    }

    .bio-credentials {
        padding: 2rem;
    }

    .credentials-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .profile-img {
        width: 250px;
        height: 250px;
    }

    .gallery-item {
        flex: 0 0 50%; /* 2 items visible on tablet */
    }
    
    .gallery-img {
        height: 250px;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    .skill-tags {
        justify-content: center;
    }

    .about-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .bio-timeline::before {
        display: none;
    }

    .timeline-item {
        padding-left: 0;
        margin-bottom: 2rem;
    }

    .timeline-item::before {
        display: none;
    }

    .timeline-year {
        position: static;
        width: auto;
        text-align: left;
        margin-bottom: 0.5rem;
        font-size: 0.9rem;
    }

    .timeline-content {
        padding: 1.5rem;
    }

    .bio-credentials {
        padding: 1.5rem;
    }

    .gallery-item {
        flex: 0 0 100%; /* 1 item visible on mobile */
    }
    
    .gallery-img {
        height: 200px;
    }
    
    .gallery-controls {
        gap: 1rem;
    }
    
    .gallery-control-btn {
        width: 40px;
        height: 40px;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Loading states */
.gallery-img,
.blog-img {
    background: linear-gradient(90deg, #f0f0f0 25%, transparent 37%, #f0f0f0 63%);
    background-size: 400% 100%;
}

/* Placeholder images styling */
img[src*="placeholder"] {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6b42a0 100%);
}