/* Minimal Text-First CSS */

:root {
    --bg-color: #fdfdfc;
    --text-color: #1a1a1a;
    --link-color: #0056b3;
    --link-hover: #003d82;
    --header-bg: #f5f5f4;
    --border-color: #e5e5e5;
}

[data-theme="dark"] {
    --bg-color: #111111;
    --text-color: #e4e4e4;
    --link-color: #66b3ff;
    --link-hover: #99ccff;
    --header-bg: #1a1a1a;
    --border-color: #333333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

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

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
}

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

nav li {
    display: flex;
    flex-direction: column;
    margin-bottom: 0;
}

.tab-desc {
    font-size: 0.8rem;
    color: #666;
    margin-top: 0.2rem;
}

[data-theme="dark"] .tab-desc {
    color: #999;
}

main {
    padding: 2rem 0;
    min-height: 60vh;
}

h1, h2, h3, h4 {
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    line-height: 1.2;
}

h1 {
    font-size: 2rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--link-color);
    text-decoration: underline;
}

a:hover {
    color: var(--link-hover);
}

ul, ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    font-size: 0.9em;
    color: #666;
}

[data-theme="dark"] footer {
    color: #999;
}