:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --link-color: #0000ee;
    --border-color: #000000;
    --font-primary: "JetBrains Mono", monospace;
    --font-secondary: "Fira Code", monospace;
}

body.dark-mode {
    --bg-color: #000000;
    --text-color: #00ff00;
    --link-color: #00ffff;
    --border-color: #00ff00;
}

body.alt-font {
    --font-primary: "Fira Code", monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-primary);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    max-width: 80ch;
    margin: 0 auto;
    padding: 20px;
}

.controls {
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

button {
    background: var(--bg-color);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: bold;
    text-transform: uppercase;
}

button:hover {
    background: var(--text-color);
    color: var(--bg-color);
}

header {
    padding: 1rem 0;
    margin-bottom: 2rem;
    border-bottom: 4px solid var(--border-color);
}

h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.contact-info {
    font-size: 0.9rem;
    margin: 0.5rem 0;
}

a {
    color: var(--link-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
    background-color: var(--text-color);
    color: var(--bg-color);
}

section {
    padding: 1.5rem 0;
    margin-bottom: 2rem;
    border-bottom: 2px dashed var(--border-color);
}

h2 {
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

h3 {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.job {
    margin-bottom: 2rem;
}

.job-title {
    font-weight: bold;
}

.job-period {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.job-period::before {
    content: "> ";
}

ul {
    list-style: square;
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

li {
    margin-bottom: 0.5rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    border-left: 2px solid var(--border-color);
    padding-left: 1rem;
}

@media (max-width: 600px) {
    h1 {
        font-size: 1.5rem;
    }
}