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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e2e8f0;
    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 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
}

.nav-logo i {
    color: #3b82f6;
    font-size: 1.5rem;
}

.nav-logo img.gsd-logo {
    height: 48px;
    width: auto;
    margin-right: 12px;
    vertical-align: middle;
    display: inline-block;
}

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

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

.nav-menu a.active {
    color: #3b82f6;
    font-weight: 600;
}

.nav-menu a:hover {
    color: #3b82f6;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1200;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #1e293b;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
    padding: 100px 20px 20px;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.profile-section {
    margin-bottom: 2rem;
}

.profile-image {
    margin-bottom: 1.5rem;
}

.profile-image img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.profile-badge {
    margin-bottom: 1rem;
}

.profile-badge span {
    background: #dbeafe;
    color: #1e40af;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    border: 1px solid #bfdbfe;
}

.profile-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: #64748b;
    font-size: 1rem;
}

.profile-location i {
    color: #3b82f6;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #1e293b;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.hero-description {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 1rem;
}

.hero-tagline {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1d4ed8;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #3b82f6;
    color: white;
}

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

.btn-secondary {
    background: white;
    color: #3b82f6;
    border: 2px solid #3b82f6;
}

.btn-secondary:hover {
    background: #3b82f6;
    color: white;
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: white;
    color: #3b82f6;
}

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

.scroll-indicator i {
    color: #64748b;
    font-size: 1.5rem;
}

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

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

.section-header h2 {
    font-size: 3rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.25rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: #dbeafe;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.service-icon i {
    font-size: 2rem;
    color: #3b82f6;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.service-card p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-impact {
    margin-top: 15px;
    display: flex;
    align-items: center;
    color: #4A5568;
    font-weight: 500;
}

.service-impact i {
    color: #48BB78;
    margin-right: 8px;
}

/* Experience Section */
.experience {
    background: #f8fafc;
    padding: 80px 0;
}

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

.timeline-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.timeline-item:hover {
    transform: translateY(-2px);
}

.timeline-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.timeline-icon i {
    font-size: 2rem;
    color: white;
}

.timeline-icon.healthcare {
    background: #3b82f6;
}

.timeline-icon.analytics {
    background: #0d9488;
}

.timeline-icon.certifications {
    background: #059669;
}

.timeline-content {
    padding: 1.5rem;
    flex: 1;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.timeline-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.company {
    color: #64748b;
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.duration {
    background: #dbeafe;
    color: #1e40af;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.875rem;
    font-weight: 500;
}

.period {
    background: #f1f5f9;
    color: #64748b;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.875rem;
    font-weight: 500;
}

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

/* Projects Section */
.projects {
    background: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.project-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.project-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.location {
    color: #64748b;
    font-size: 0.875rem;
}

.category {
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
}

.category.ai-innovation {
    background: #dbeafe;
    color: #1e40af;
}

.category.leadership {
    background: #dcfce7;
    color: #166534;
}

.category.education {
    background: #f3e8ff;
    color: #7c3aed;
}

.category.innovation {
    background: #fed7aa;
    color: #c2410c;
}

.project-description {
    color: #64748b;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-impact {
    margin-bottom: 1rem;
}

.project-impact p {
    color: #64748b;
    font-size: 0.875rem;
}

.project-impact p:first-child {
    font-weight: 500;
    color: #1e293b;
}

.project-impact p:last-child {
    color: #059669;
}

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

.project-tech span {
    background: #f1f5f9;
    color: #64748b;
    padding: 0.25rem 0.5rem;
    border-radius: 10px;
    font-size: 0.75rem;
}

/* Speaking Section */
.speaking {
    background: #f8fafc;
}

.speaking-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
}

.speaking-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

.speaking-icon {
    width: 60px;
    height: 60px;
    background: #dbeafe;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.speaking-icon i {
    font-size: 1.5rem;
    color: #3b82f6;
}

.speaking-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
}

.speaking-image {
    margin-bottom: 1.5rem;
}

.speaking-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    object-position: center top;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.speaking-image p {
    text-align: center;
    color: #64748b;
    font-size: 0.875rem;
}

.speaking-description {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.speaking-topics {
    list-style: none;
}

.speaking-topics li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.speaking-topics li::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #3b82f6;
    border-radius: 50%;
    margin-top: 0.5rem;
    flex-shrink: 0;
}

.certifications-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.certification-item {
    background: #f8fafc;
    padding: 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.certification-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.certification-item h4 {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.issuer {
    color: #3b82f6;
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.description {
    color: #64748b;
    font-size: 0.875rem;
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    text-align: center;
}

.contact h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: #bfdbfe;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.contact-availability {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
    max-width: 500px;
    margin: 0 auto;
}

.contact-availability p {
    margin-bottom: 1rem;
    font-weight: 600;
}

.availability-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.availability-tags span {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
}

/* Footer */
.footer {
    background: #1e293b;
    color: #cbd5e1;
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.footer-social a {
    color: #94a3b8;
    font-size: 1.25rem;
    transition: color 0.3s ease;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    color: white;
    background: #334155;
}

/* Remove focus outline */
a,
button,
a:focus,
button:focus {
    outline: none !important;
    -webkit-tap-highlight-color: transparent; /* For mobile devices */
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        right: 0;
        left: 0;
        background: white;
        width: 100vw;
        flex-direction: column;
        gap: 0;
        box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        z-index: 1100;
    }
    .nav-menu.active {
        display: flex;
    }
    .nav-menu li {
        width: 100%;
        text-align: right;
        border-bottom: 1px solid #e2e8f0;
    }
    .nav-menu a {
        display: block;
        padding: 1.25rem 2rem;
    }
    .hamburger {
        display: flex;
        z-index: 1200;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-tagline {
        font-size: 1.25rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .timeline-item {
        flex-direction: column;
    }
    
    .timeline-icon {
        width: 100%;
        height: 60px;
        border-radius: 0;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .speaking-grid {
        grid-template-columns: 1fr;
    }
    
    .contact h2 {
        font-size: 2rem;
    }
    
    .contact p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 80px 15px 20px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .service-card,
    .project-card,
    .speaking-card {
        padding: 1.5rem;
    }
    
    .timeline-content {
        padding: 1.5rem;
    }
}