:root {
    --primary-color: #1e293b;
    --accent-color: #2563eb;
    --bg-light: #f8fafc;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #334155;
    background-color: #fff;
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color);
}

.hero-section {
    background-color: var(--bg-light);
    border-bottom: 1px solid #e2e8f0;
    padding: 4rem 0;
}

.section-title {
    position: relative;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.section-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 3px;
    background-color: var(--accent-color);
}

.badge-skill {
    background-color: #e0e7ff;
    color: #3730a3;
    font-weight: 500;
    font-size: 0.85rem;
    margin: 0.2rem;
    padding: 0.4em 0.8em;
}

.timeline {
    border-left: 2px solid #e2e8f0;
    padding-left: 1.5rem;
    margin-left: 0.5rem;
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.95rem;
    top: 0.25rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--accent-color);
    border: 2px solid #fff;
}

.card-project {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid #e2e8f0;
}

.card-project:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

pre {
    background-color: #1e293b;
    color: #f8fafc;
    padding: 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    overflow-x: auto;
}