:root {
    --primary-color: #4f46e5;
    --primary-dark: #4338ca;
    --secondary-color: #06b6d4;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-large: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 0.5rem;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 2rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--bg-primary);
    border-radius: 1rem;
    box-shadow: var(--shadow-large);
    overflow: hidden;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 3rem 2rem;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: none;
}

@keyframes float {
    from { }
    to { }
}

.header-content {
    position: relative;
    z-index: 1;
}

.profile-section {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.profile-image {
    position: relative;
}

.profile-image img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
    object-fit: cover;
    object-position: center;
}

.profile-image:hover img {
    transform: scale(1.05);
    box-shadow: var(--shadow-large);
}

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

.name {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
}

.contact-item:hover {
    color: white;
    transform: translateX(5px);
}

.contact-item i {
    width: 20px;
    text-align: center;
    color: var(--accent-color);
}

.contact-item a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

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

/* Header Actions */
.header-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 2rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    font-family: inherit;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: rgba(79, 70, 229, 0.15);
    color: var(--primary-color);
    border: 1px solid rgba(79, 70, 229, 0.4);
    backdrop-filter: blur(10px);
}

.btn-primary:hover {
    background: rgba(79, 70, 229, 0.25);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.25);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.6);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.3);
}

.btn i {
    font-size: 0.875rem;
    transition: var(--transition);
}

.btn:hover i {
    transform: scale(1.1);
}

/* Main Content Styles */
.main-content {
    padding: 3rem 2rem;
}

.section {
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    opacity: 1;
    transform: none;
}

.section:hover {
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

.section-header {
    margin-bottom: 2rem;
    position: relative;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 2px;
}

.section-title i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.section-content {
    position: relative;
}

/* About Section */
.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 800px;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    position: relative;
}

.about-text::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 10px;
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.3;
    font-family: serif;
}

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

.skill-category {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
}

.skill-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: 0.3em 0.9em;
    border-radius: 1.2em;
    font-size: 0.85em;
    font-weight: 500;
    margin: 0.15em 0.25em 0.15em 0;
    border: none;
    box-shadow: none;
    vertical-align: middle;
    cursor: default;
}

.tech-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--bg-tertiary) 100%);
    color: #fff;
    padding: 0.18em 0.7em;
    border-radius: 1em;
    font-size: 0.78em;
    font-weight: 500;
    margin: 0.12em 0.18em 0.12em 0;
    border: none;
    box-shadow: none;
    vertical-align: middle;
    cursor: default;
}

.skill-tag:hover, .tech-tag:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
    box-shadow: none;
    transform: none;
}

/* Timeline Styles */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

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

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    background: var(--primary-color);
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
    box-shadow: var(--shadow-medium);
    z-index: 1;
}

.timeline-content {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

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

.job-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.company {
    font-weight: 500;
    color: var(--primary-color);
    font-size: 1rem;
}

.period {
    font-size: 0.875rem;
    color: var(--text-light);
    background: var(--bg-tertiary);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    white-space: nowrap;
}

.job-description {
    list-style: none;
    padding: 0;
}

.job-description li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.job-description li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: 0.75rem;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-large);
    border-color: var(--primary-color);
}

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

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

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

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    font-size: 0.875rem;
}

.project-link:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

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

.tech-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.2rem 0.5rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

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

/* Education Section */
.education-item {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
}

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

.degree {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.university {
    font-weight: 500;
    color: var(--primary-color);
}

.education-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--bg-tertiary);
    padding: 2rem;
    border-top: 1px solid var(--border-color);
}

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

.footer-content p {
    color: var(--text-secondary);
    margin: 0;
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.125rem;
}

.social-links a:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.footer-links {
    display: flex;
    gap: 1.2rem;
    justify-content: center;
    margin-top: 0.5rem;
}

.footer-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    font-size: 1.25rem;
    text-decoration: none;
    transition: background 0.2s;
}

.footer-link:hover {
    background: var(--primary-dark);
    color: #fff;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    
    .container {
        border-radius: 0.5rem;
    }
    
    .header {
        padding: 2rem 1rem;
    }
    
    .profile-section {
        flex-direction: column;
        text-align: center;
    }
    
    .header-actions {
        margin-top: 1rem;
        justify-content: center;
    }
    
    .name {
        font-size: 2.5rem;
    }
    
    .main-content {
        padding: 2rem 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        padding-left: 1rem;
    }
    
    .timeline-item {
        padding-left: 1.5rem;
    }
    
    .timeline-marker {
        left: -1.5rem;
    }
    
    .job-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1.5rem 1rem;
    }
    
    .name {
        font-size: 2rem;
    }
    
    .title {
        font-size: 1.25rem;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: 1.5rem 1rem;
    }
    
    .section {
        padding: 1rem;
    }
    
    .section {
        margin-bottom: 2rem;
        padding: 1.5rem;
    }
    
    .skill-category,
    .project-card,
    .education-item {
        padding: 1.5rem;
    }
    
    .timeline-content {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
        gap: 0.4rem;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        padding: 0;
    }
    
    .container {
        box-shadow: none;
        border-radius: 0;
    }
    
    .header {
        background: var(--primary-color) !important;
        -webkit-print-color-adjust: exact;
        color-adjust: exact;
    }
    
    .section {
        page-break-inside: avoid;
        animation: none;
        opacity: 1;
        transform: none;
    }
    
    .project-card:hover,
    .skill-category:hover,
    .timeline-content:hover,
    .education-item:hover {
        transform: none;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000080;
        --text-primary: #000000;
        --text-secondary: #333333;
        --border-color: #000000;
    }
}

/* Dark Theme */
body.dark-theme {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #0891b2;
    --accent-color: #f59e0b;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --border-color: #4b5563;
}

body.dark-theme .header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

body.dark-theme .section {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

body.dark-theme .skill-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

body.dark-theme .tech-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

body.dark-theme .experience-item {
    border-color: var(--border-color);
}

body.dark-theme .education-item {
    border-color: var(--border-color);
}

body.dark-theme .btn-primary {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-color);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

body.dark-theme .btn-primary:hover {
    background: rgba(99, 102, 241, 0.25);
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

body.dark-theme .btn-secondary {
    background: rgba(55, 65, 81, 0.6);
    color: var(--text-secondary);
    border: 1px solid rgba(75, 85, 99, 0.5);
}

body.dark-theme .btn-secondary:hover {
    background: rgba(75, 85, 99, 0.8);
    border-color: rgba(156, 163, 175, 0.5);
    color: var(--text-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

body.dark-theme .footer-links a {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

body.dark-theme .footer-links a:hover {
    background: var(--primary-color);
    color: white;
}

.experience-item {
    margin-bottom: 2rem;
}

.experience-item:last-child {
    margin-bottom: 0;
}