/* CSS Variables for theming */
:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent-primary: #3b82f6;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --border-color: #374151;
    --timeline-line: #4b5563;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.16);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.16);
    --transition: all 0.3s ease;
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --container-max-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Hero Section */
.hero {
    background: var(--bg-secondary);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.profile-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.profile-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent-primary);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.profile-photo:hover {
    transform: scale(1.05);
    border-color: var(--accent-secondary);
}

.profile-info {
    text-align: center;
}

.name {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.role {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Main Content */
.main-content {
    padding: var(--spacing-2xl) 0;
}

/* Section Styles */
.section {
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.section:last-child {
    border-bottom: none;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.icon {
    font-size: 1.8rem;
}

.section-content {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
}

.section-content p {
    margin-bottom: var(--spacing-md);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--timeline-line);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-md);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(var(--spacing-xl) * -1 - 5px);
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 3px var(--accent-primary);
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.timeline-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    font-style: italic;
}

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

.timeline-description li {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.timeline-description li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

/* Education */
.education-item {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.education-item:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow);
}

.education-item h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.education-institution {
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.education-status {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

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

.skill-category:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.skill-category h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--accent-primary);
}

.skill-list {
    list-style: none;
    padding: 0;
}

.skill-list li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: var(--spacing-md);
}

.skill-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
}

.footer-title {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.contact-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: 50px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.contact-link:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.contact-icon {
    font-size: 1.2rem;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: var(--spacing-lg);
}

/* Responsive Design */
@media (min-width: 768px) {
    .profile-container {
        flex-direction: row;
        justify-content: center;
        text-align: left;
    }

    .profile-info {
        text-align: left;
    }

    .name {
        font-size: 3rem;
    }

    .contact-links {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-xl) 0;
    }

    .name {
        font-size: 2rem;
    }

    .role {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .timeline {
        padding-left: var(--spacing-lg);
    }

    .timeline::before {
        left: 0;
    }

    .timeline-item::before {
        left: calc(var(--spacing-lg) * -1 - 5px);
    }

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

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

    .profile-photo {
        width: 120px;
        height: 120px;
    }

    .name {
        font-size: 1.8rem;
    }

    .section {
        padding: var(--spacing-lg) 0;
    }

    .timeline {
        padding-left: var(--spacing-md);
    }

    .timeline-item::before {
        left: calc(var(--spacing-md) * -1 - 5px);
    }
}

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

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

/* Print styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .hero,
    .footer {
        background: white;
        border: none;
    }

    .contact-link {
        background: white;
        border: 1px solid #ccc;
    }
}