/* Minimalist "terminal / block explorer" theme layered on mdBook's
 * built-in "navy" theme. No gradients, no shadows, no decoration —
 * monospace headings, a single accent color, hairline borders. */

:root {
    --db-accent: #3ddc84;      /* terminal green */
    --db-accent-dim: #245c3f;
    --db-bg: #0d1117;
    --db-bg-alt: #10151c;
    --db-border: #1f2933;
    --db-text: #c9d1d9;
    --db-text-dim: #6e7681;
}

.navy {
    --bg: var(--db-bg);
    --fg: var(--db-text);
    --sidebar-bg: var(--db-bg-alt);
    --sidebar-fg: var(--db-text-dim);
    --sidebar-active: var(--db-accent);
    --links: var(--db-accent);
    --inline-code-color: var(--db-accent);
    --theme-popup-bg: var(--db-bg-alt);
    --theme-popup-border: var(--db-border);
    --quote-bg: var(--db-bg-alt);
    --quote-border: var(--db-accent-dim);
    --table-border-color: var(--db-border);
    --table-header-bg: var(--db-bg-alt);
    --table-alternate-bg: var(--db-bg-alt);
}

body {
    font-family: "Söhne", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0.005em;
}

h1, h2, h3, h4, h5, h6 {
    font-family: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-weight: 600;
    letter-spacing: -0.01em;
    border-bottom: 1px solid var(--db-border);
    padding-bottom: 0.3em;
}

h1 {
    text-transform: lowercase;
}

h1::before {
    content: "// ";
    color: var(--db-text-dim);
    font-weight: 400;
}

code, pre, pre code {
    font-family: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.85em;
}

pre {
    background: var(--db-bg-alt) !important;
    border: 1px solid var(--db-border);
    border-radius: 2px;
    box-shadow: none !important;
}

:not(pre) > code {
    background: var(--db-bg-alt);
    border: 1px solid var(--db-border);
    border-radius: 2px;
    padding: 0.1em 0.35em;
}

a {
    text-decoration: none;
    border-bottom: 1px solid var(--db-accent-dim);
    transition: border-color 0.15s ease;
}

a:hover {
    border-bottom-color: var(--db-accent);
}

table {
    border-collapse: collapse;
    border: 1px solid var(--db-border);
}

th, td {
    border: 1px solid var(--db-border);
    padding: 0.5em 0.8em;
}

th {
    font-family: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.78em;
    letter-spacing: 0.06em;
    color: var(--db-text-dim);
}

blockquote {
    border-left: 2px solid var(--db-accent-dim);
    background: var(--db-bg-alt);
    border-radius: 0;
    padding: 0.6em 1em;
}

.sidebar {
    border-right: 1px solid var(--db-border);
}

.chapter li.chapter-item {
    font-family: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
    font-size: 0.88em;
}

.menu-title {
    font-family: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
    letter-spacing: 0.02em;
}

hr {
    border: none;
    border-top: 1px solid var(--db-border);
}

::selection {
    background: var(--db-accent-dim);
}