:root {
    --bg-color: #1a1a1a;
    --text-color: #dddddd;
    --accent-color: #66b3ff;
    --link-regular: #aaaaaa;
    --link-highlight: #ffffff;
}

[data-theme="light"] {
    --bg-color: #ffffff;
    --text-color: #333333;
    --accent-color: #0066cc;
    --link-regular: #666666;
    --link-highlight: #000000;
}

body {
    margin: 0;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: system-ui, -apple-system, sans-serif;
    transition: background-color 0.1s ease, color 0.1s ease;
}

nav {
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .nav-left {
    align-items: left;
    display: flex;
    justify-content: space-between;
    margin-right: 1rem;
    color: var(--link-regular);
    text-decoration: none;
}

nav .nav-left .links a {
    margin-right: 1rem;
    color: var(--link-regular);
    text-decoration: none;
}

nav .nav-left .nav-author {
    margin-right: 0.5rem;
    color: var(--link-regular);
    text-decoration: none;
}

nav .nav-left .links a:hover {
    color: var(--link-highlight);
    text-decoration: underline;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

.theme-toggle {
    color: var(--link-regular);
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    position: relative;
    display: inline-flex;
    align-items: center;
}

.theme-toggle:hover {
    color: var(--link-highlight);
}

.theme-toggle .sun-overflow {
    font-size: 1.7rem;
    line-height: 0;  /* prevent line height change */
}