:root {
    --bg-color: #fafafa;
    --text-color: #1a202c;
    --accent-color: #4299e1;
    --secondary-color: #4a5568;
    --spacing: 2rem;
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    padding: 2rem;
    font-size: 16px;
    letter-spacing: -0.011em;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

header {
    padding: calc(var(--spacing) * 1.5) 0;
    margin-bottom: calc(var(--spacing) * 1.5);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    color: var(--text-color);
}

.role-title {
    font-size: 1.2rem;
    color: var(--secondary-color);
    font-weight: 400;
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-weight: 600;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-weight: 600;
}

section {
    margin-bottom: calc(var(--spacing) * 2);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

.summary {
    font-size: 1.1rem;
    max-width: 800px;
    color: var(--secondary-color);
    line-height: 1.8;
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.impact-item {
    padding: 2rem;
    background: white;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid rgba(49, 130, 206, 0.1);
    box-shadow: var(--card-shadow);
}

.impact-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--hover-shadow);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.skills-grid div {
    padding: 1.75rem;
    background: white;
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--card-shadow);
}

.skills-grid div:hover {
    transform: translateY(-4px);
    box-shadow: var(--hover-shadow);
}

.experience-item, .expertise-item {
    margin-bottom: 2rem;
    border-left: 3px solid var(--accent-color);
    padding: 2rem;
    background: white;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    transition: var(--transition);
    box-shadow: var(--card-shadow);
}

.experience-item:hover, .expertise-item:hover {
    transform: translateX(4px);
    box-shadow: var(--hover-shadow);
}

.experience-item h3,  .expertise-item h3 {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1rem;
}

.date {
    font-size: 0.9rem;
    color: var(--secondary-color);
    font-weight: 400;
}

.experience-item ul, .expertise-item ul {
    list-style-position: inside;
    color: var(--secondary-color);
}

.experience-item li, .expertise-item li {
    margin-bottom: 0.5rem;
}

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

.project-card {
    padding: 2rem;
    background: white;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid rgba(49, 130, 206, 0.1);
    box-shadow: var(--card-shadow);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--hover-shadow);
}

.project-card ul {
    list-style-position: inside;
    color: var(--secondary-color);
}

.project-card li {
    margin-bottom: 0.5rem;
}

.contact {
    text-align: center;
    padding: calc(var(--spacing) * 1.5) 0;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    margin-top: calc(var(--spacing) * 2);
}

.contact a {
    color: var(--accent-color);
    text-decoration: none;
    margin: 0 1rem;
    transition: var(--transition);
    font-weight: 500;
    position: relative;
}

.contact a::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease-out;
}

.contact a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

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

    .container {
        padding: 0 1rem;
    }
}

/* Add smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

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

/* Add print styles */
@media print {
    body {
        padding: 0;
        background: white;
    }

    .container {
        max-width: 100%;
    }

    section {
        opacity: 1;
        transform: none;
    }
}