:root {
    --color-black: #000000;
    --color-tan: #86745c;
    --color-light-tan: #c2baab;
    --color-dark-tan: #6a5c48;
    --color-white: #ffffff;
    --color-black-63: rgba(0, 0, 0, 0.63);
    --color-black-80: rgba(0, 0, 0, 0.8);
    --color-black-88: rgba(0, 0, 0, 0.88);
    --color-gold: #b19977;
    --color-accent: #b19977;
    --color-accent-light: #c2baab;
}

body {
    background-color: var(--color-black);
    color: var(--color-white);
    font-family: monospace;
    margin: 0;
    padding: 0;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    padding: 20px;
}

h1, h2, h3 {
    color: var(--color-accent);
}

input, button, select, textarea {
    font-family: monospace;
    padding: 10px;
    margin: 5px 0;
    background-color: var(--color-black-80);
    color: var(--color-white);
    border: 1px solid var(--color-accent);
    border-radius: 5px;
}

button:hover {
    background-color: var(--color-accent);
    color: var(--color-black);
    cursor: pointer;
}

.lesson-container {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.lesson-left {
    width: 35%;
    background-color: var(--color-black-88);
    padding: 20px;
    border-radius: 10px;
    overflow-y: auto;
    max-height: 80vh;
}

.lesson-right {
    width: 65%;
    background-color: var(--color-black-80);
    padding: 20px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
}

.terminal-input {
    background-color: var(--color-black);
    color: var(--color-white);
    border: 1px solid var(--color-accent);
    padding: 10px;
    width: 100%;
}

.terminal-output {
    background-color: var(--color-black-88);
    color: var(--color-white);
    border: 1px solid var(--color-accent);
    padding: 10px;
    margin-top: 10px;
    height: 300px;
    overflow-y: auto;
}

.completed {
    color: var(--color-gold);
}