:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

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

.container {
    max-width: 1000px;
    margin: 2rem auto;
    background: var(--bg-primary);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

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

.name {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    font-size: 1.1rem;
}

.contact-info span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-info i {
    font-size: 1rem;
    opacity: 0.9;
}

.section {
    padding: 2.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.section:last-of-type {
    border-bottom: none;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--accent-color);
    border-radius: 2px;
}

.summary-text {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    font-style: italic;
}

.competencies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.competency-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1.25rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.competency-item i {
    color: var(--accent-color);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.experience-item {
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

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

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

.company-info h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.position-info h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.location, .duration {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.achievements {
    list-style: none;
    padding-left: 0;
}

.achievements li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.achievements li::before {
    content: '•';
    color: var(--accent-color);
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

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

.education-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.education-item {
    padding: 1.25rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.institution {
    color: var(--primary-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.degree {
    font-weight: 500;
    color: var(--text-primary);
    margin: 0.5rem 0;
}

.details {
    color: var(--text-secondary);
    font-style: italic;
}

.certifications {
    padding: 1.25rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.subsection-title {
    color: var(--secondary-color);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    background: white;
    border-radius: 4px;
}

.cert-item i {
    color: var(--accent-color);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.skill-category {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.skill-category h3 {
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-tag {
    display: inline-block;
    background: white;
    color: var(--text-primary);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    margin: 0.25rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.skill-tag:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    transform: translateY(-1px);
}

.footer {
    background: var(--bg-secondary);
    text-align: center;
    padding: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.print-note {
    font-size: 0.8rem;
    margin-top: 0.5rem;
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        margin: 0;
        border-radius: 0;
    }
    
    .header {
        padding: 2rem 1rem;
    }
    
    .name {
        font-size: 2rem;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .section {
        padding: 1.5rem 1rem;
    }
    
    .experience-header {
        flex-direction: column;
    }
    
    .education-content {
        grid-template-columns: 1fr;
    }
    
    .competencies-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
    }
    
    .container {
        box-shadow: none;
        max-width: 100%;
        margin: 0;
    }
    
    .section {
        page-break-inside: avoid;
    }
    
    .skill-tag:hover {
        background: white;
        color: var(--text-primary);
    }
    
    .header {
        background: var(--primary-color) !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    .print-note {
        display: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --bg-primary: #1f2937;
        --bg-secondary: #374151;
        --border-color: #4b5563;
    }
    
    body {
        background: linear-gradient(135deg, #1e3a8a 0%, #312e81 100%);
    }
    
    .skill-tag {
        background: var(--bg-secondary);
        border-color: var(--border-color);
    }
    
    .cert-item {
        background: var(--bg-secondary);
    }
}