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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #374151;
    background-color: #f9fafb;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: #111827;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: #111827;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #6b7280;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

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

.bar {
    width: 24px;
    height: 3px;
    background-color: #6b7280;
    margin: 3px 0;
    transition: 0.3s;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

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

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

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

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

/* Hero Section */
.hero-section {
    padding-top: 5rem;
    padding-bottom: 3rem;
    background: #ffffff;
    color: #333;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
}

.hero-content {
    text-align: center;
}

.profile-photo-mobile {
    display: block;
    margin-bottom: 2rem;
}

.profile-photo-desktop {
    display: none;
}

.profile-placeholder {
    width: 8rem;
    height: 8rem;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 4px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.profile-placeholder.large {
    width: 16rem;
    height: 16rem;
}

.profile-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.profile-icon.large {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.profile-text {
    font-size: 0.75rem;
    font-weight: 500;
    opacity: 0.9;
}

/* Profile Image Styles */
.profile-image {
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.profile-image.mobile {
    width: 8rem;
    height: 8rem;
    margin: 0 auto;
    display: block;
}

.profile-image.desktop {
    width: 16rem;
    height: 16rem;
    margin: 0 auto;
    display: block;
}

.profile-image:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    display: block;
    font-size: 2rem;
    color: #fbbf24;
    margin-top: 0.5rem;
}

.hero-tagline {
    display: block;
    font-size: 1.5rem;
    font-weight: 500;
    opacity: 0.9;
    margin-top: 0.5rem;
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 50rem;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 4rem;
}

.metric-card {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 1rem;
    backdrop-filter: blur(10px);
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.metric-value.green { color: #10b981; }
.metric-value.blue { color: #3b82f6; }
.metric-value.purple { color: #8b5cf6; }
.metric-value.orange { color: #f59e0b; }

.metric-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #111827;
}

.section-subtitle {
    font-size: 1.125rem;
    color: #6b7280;
    max-width: 40rem;
    margin: 0 auto;
}

/* Experience Section */
.experience-section {
    padding: 4rem 0;
    background: white;
}

.experience-timeline {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.experience-card {
    background: #f9fafb;
    border-radius: 1rem;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.experience-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
}

.experience-company {
    font-size: 1.125rem;
    color: #3b82f6;
    font-weight: 600;
}

.experience-period {
    background: #dbeafe;
    color: #1e40af;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.experience-description {
    margin-bottom: 1.5rem;
    color: #6b7280;
    line-height: 1.7;
}

.experience-metrics {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.metric-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: #374151;
}

.metric-icon {
    font-size: 1rem;
}

.experience-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: #e5e7eb;
    color: #374151;
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Projects Section */
.projects-section {
    padding: 4rem 0;
    background: #f9fafb;
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.project-image {
    height: 12rem;
    background: #e5e7eb;
    position: relative;
}

.project-placeholder {
    height: 100%;
    background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.project-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.project-category {
    font-weight: 600;
    color: #6b7280;
}

.project-content {
    padding: 1.5rem;
}

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

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #111827;
}

.project-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.project-badge.fintech {
    background: #10b981;
    color: white;
}

.project-badge.healthtech {
    background: #3b82f6;
    color: white;
}

.project-badge.iot {
    background: #8b5cf6;
    color: white;
}

.project-description {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-metrics {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-metric {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: #374151;
}

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

/* Skills Section */
.skills-section {
    padding: 4rem 0;
    background: white;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.skill-card {
    background: #f9fafb;
    border-radius: 1rem;
    padding: 1.5rem;
    transition: transform 0.3s ease;
}

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

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

.skill-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.skill-icon.ai { background: #dbeafe; }
.skill-icon.product { background: #d1fae5; }
.skill-icon.cloud { background: #e0e7ff; }
.skill-icon.compliance { background: #fef3c7; }
.skill-icon.analytics { background: #fed7d7; }
.skill-icon.emerging { background: #e0f2fe; }

.skill-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #111827;
}

.skill-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skill-list li {
    color: #6b7280;
    position: relative;
    padding-left: 1rem;
}

.skill-list li::before {
    content: "•";
    color: #3b82f6;
    position: absolute;
    left: 0;
}

/* Education Section */
.education-section {
    padding: 4rem 0;
    background: #f9fafb;
}

.education-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.education-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

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

.education-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.education-icon.degree { background: #dbeafe; }
.education-icon.certification { background: #d1fae5; }

.education-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
}

.education-field {
    font-size: 1.125rem;
    color: #3b82f6;
    font-weight: 600;
}

.education-description {
    color: #6b7280;
    margin-bottom: 1rem;
    line-height: 1.6;
}

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

.edu-tag {
    background: #dbeafe;
    color: #1e40af;
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Contact Section */
.contact-section {
    padding: 4rem 0;
    background: white;
}

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

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-icon {
    width: 3rem;
    height: 3rem;
    background: #dbeafe;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.contact-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #111827;
    margin-bottom: 0.25rem;
}

.contact-link {
    color: #3b82f6;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.contact-cta {
    text-align: center;
}

.cta-card {
    background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
    border-radius: 1rem;
    padding: 2rem;
}

.cta-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
    margin-bottom: 1rem;
}

.cta-description {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.cta-points {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.cta-point {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.cta-check {
    color: #10b981;
    font-weight: 700;
}

/* Footer */
.footer {
    background: #111827;
    color: white;
    padding: 2rem 0;
}

.footer-content {
    text-align: center;
}

.footer-text {
    color: #9ca3af;
    margin-bottom: 0.5rem;
}

.footer-subtitle {
    color: #6b7280;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
    }
    
    .metrics-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .experience-metrics {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .education-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr 1fr;
        text-align: left;
    }
    
    .hero-content {
        text-align: left;
    }
    
    .profile-photo-mobile {
        display: none;
    }
    
    .profile-photo-desktop {
        display: flex;
        justify-content: center;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-subtitle {
        font-size: 2.5rem;
    }
    
    .hero-tagline {
        font-size: 2rem;
    }
    
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Mobile Navigation */
@media (max-width: 767px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 64px;
        flex-direction: column;
        background-color: 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-link {
        display: block;
        margin: 1rem 0;
    }
}

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

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

/* Smooth transitions */
* {
    transition: all 0.3s ease;
}

/* Focus states for accessibility */
.btn:focus,
.nav-link:focus,
.contact-link:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}