/* =========================================================================
   murmer brand theme — overrides all mdBook themes
   Brand: brand.html (slate ground + amber/coral signal)
   Fonts: JetBrains Mono (code/wordmark), DM Sans (body)
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;600;700&family=DM+Sans:wght@300;400;500;700&display=swap');

/* ---------- Brand tokens ---------- */
:root {
    --m-slate-950: #0a0e17;
    --m-slate-900: #0f1623;
    --m-slate-800: #1a2235;
    --m-slate-700: #2a3650;
    --m-slate-500: #64748b;
    --m-slate-400: #94a3b8;
    --m-slate-300: #cbd5e1;
    --m-slate-200: #e2e8f0;
    --m-slate-100: #f1f5f9;
    --m-signal-warm: #f59e42;
    --m-signal-hot: #ef6443;
    --m-signal-cool: #38bdf8;
    --m-signal-teal: #2dd4bf;
    --m-signal-glow: rgba(245, 158, 66, 0.15);

    /* Widen content area for comfortable reading at larger text */
    --content-max-width: 840px;
}

/* ---------- Override every theme to the brand palette ---------- */
.ayu, .coal, .light, .navy, .rust,
html:not(.js) {
    --bg: var(--m-slate-950);
    --fg: var(--m-slate-200);

    --sidebar-bg: var(--m-slate-900);
    --sidebar-fg: var(--m-slate-300);
    --sidebar-non-existant: var(--m-slate-500);
    --sidebar-active: var(--m-signal-warm);
    --sidebar-spacer: var(--m-slate-700);

    --scrollbar: var(--m-slate-500);

    --icons: var(--m-slate-500);
    --icons-hover: var(--m-slate-100);

    --links: var(--m-signal-warm);

    --inline-code-color: var(--m-signal-warm);

    --theme-popup-bg: var(--m-slate-900);
    --theme-popup-border: var(--m-slate-700);
    --theme-hover: var(--m-slate-800);

    --quote-bg: var(--m-slate-900);
    --quote-border: var(--m-slate-700);

    --warning-border: var(--m-signal-hot);

    --table-border-color: var(--m-slate-800);
    --table-header-bg: var(--m-slate-800);
    --table-alternate-bg: var(--m-slate-900);

    --searchbar-border-color: var(--m-slate-700);
    --searchbar-bg: var(--m-slate-800);
    --searchbar-fg: var(--m-slate-100);
    --searchbar-shadow-color: rgba(245, 158, 66, 0.1);
    --searchresults-header-fg: var(--m-slate-400);
    --searchresults-border-color: var(--m-slate-700);
    --searchresults-li-bg: var(--m-slate-900);
    --search-mark-bg: var(--m-signal-glow);

    --color-scheme: dark;

    --footnote-highlight: var(--m-signal-warm);

    --overlay-bg: rgba(10, 14, 23, 0.6);

    --blockquote-note-color: var(--m-signal-cool);
    --blockquote-tip-color: var(--m-signal-teal);
    --blockquote-important-color: #d3abff;
    --blockquote-warning-color: var(--m-signal-warm);
    --blockquote-caution-color: var(--m-signal-hot);

    --sidebar-header-border-color: var(--m-signal-warm);

    --mono-font: 'JetBrains Mono', 'Source Code Pro', Consolas, monospace;
}

/* Also override prefers-color-scheme dark fallback */
@media (prefers-color-scheme: dark) {
    html:not(.js) {
        --bg: var(--m-slate-950);
        --fg: var(--m-slate-200);
        --sidebar-bg: var(--m-slate-900);
        --sidebar-fg: var(--m-slate-300);
        --sidebar-active: var(--m-signal-warm);
        --links: var(--m-signal-warm);
        --inline-code-color: var(--m-signal-warm);
        --color-scheme: dark;
    }
}

/* ---------- Typography ---------- */

/* Bump base text size: mdBook 1rem = 10px, so 1.8rem = 18px */
body {
    font-size: 1.8rem;
}

/* Body: DM Sans, weight 400, brighter than default */
.content main,
.content main p,
.content main li,
.content main td,
.content main dd {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    font-weight: 400;
}

/* Heading base: DM Sans, slate-100 for high contrast on dark bg */
.content main h1,
.content main h2,
.content main h3,
.content main h4,
.content main h5 {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--m-slate-100);
    line-height: 1.25;
}

/* h1 — chapter title: large, bold, slight negative tracking */
.content main h1 {
    font-size: 3.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--m-slate-800);
}

/* h2 — section heading: clear break from body */
.content main h2 {
    font-size: 2.4rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 0.75rem;
}

/* h3 — subsection: still distinct from body */
.content main h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* h4 — minor heading: same size as body but bolder */
.content main h4 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--m-slate-200);
}

/* h5 — label-style: JetBrains Mono, uppercase, amber accent */
.content main h5 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--m-signal-warm);
    margin-bottom: 0.4rem;
}

/* Paragraphs: generous spacing for readability */
.content main p {
    margin-bottom: 1.2em;
}

/* Strong/bold in body: use weight 600 for emphasis */
.content main strong {
    font-weight: 600;
    color: var(--m-slate-100);
}

/* Code: JetBrains Mono */
code, pre, .content main code, .content main pre,
.sidebar .sidebar-scrollbox {
    font-family: var(--mono-font);
}

/* Sidebar: JetBrains Mono for nav labels */
.sidebar .sidebar-scrollbox a {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.35rem;
    font-weight: 400;
    letter-spacing: 0.02em;
}

/* Chapter title in sidebar */
.sidebar .chapter li.chapter-item > a.active {
    color: var(--m-signal-warm);
    font-weight: 500;
}

/* ---------- Code blocks ---------- */

pre {
    background: var(--m-slate-900) !important;
    border: 1px solid var(--m-slate-700);
    border-radius: 8px;
    padding: 1rem 1.25rem;
}

pre > code {
    background: transparent !important;
}

/* Inline code */
:not(pre) > code {
    background: rgba(245, 158, 66, 0.08);
    border-radius: 4px;
    padding: 0.15rem 0.4rem;
    font-size: 0.875em;
}

/* ---------- Links ---------- */

a {
    color: var(--m-signal-warm);
    text-decoration: none;
}

a:hover {
    color: var(--m-signal-hot);
    text-decoration: underline;
}

/* ---------- Tables ---------- */

table {
    border-collapse: collapse;
}

table th {
    background: var(--m-slate-800);
    color: var(--m-slate-100);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.8rem 1.2rem;
}

table td {
    padding: 0.8rem 1.2rem;
    border-color: var(--m-slate-800);
    font-size: 1.6rem;
}

table tr:nth-child(2n) {
    background: var(--m-slate-900);
}

/* ---------- Sidebar refinements ---------- */

.sidebar {
    border-right: 1px solid var(--m-slate-800);
}

/* Sidebar chapter header (book title) */
.sidebar .sidebar-scrollbox .chapter > a:first-child,
nav.sidebar .sidebar-scrollbox .sidebar-header {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    color: var(--m-slate-100);
}

/* Part titles in sidebar */
.sidebar .chapter li.part-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--m-signal-warm);
    opacity: 0.8;
}

/* ---------- Menu bar ---------- */

#menu-bar {
    background: var(--m-slate-950);
    border-bottom: 1px solid var(--m-slate-800);
}

/* ---------- Horizontal rules ---------- */

hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--m-slate-700), transparent);
}

/* ---------- Blockquotes ---------- */

blockquote {
    border-left: 3px solid var(--m-signal-warm);
    background: var(--m-slate-900);
    border-radius: 0 8px 8px 0;
    padding: 0.75rem 1.25rem;
}

/* ---------- Scrollbar ---------- */

::-webkit-scrollbar-thumb {
    background: var(--m-slate-700);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--m-slate-500);
}

/* ---------- Selection ---------- */

::selection {
    background: rgba(245, 158, 66, 0.25);
    color: var(--m-slate-100);
}

/* ---------- Search ---------- */

#searchbar {
    border-radius: 8px;
    border: 1px solid var(--m-slate-700);
}

#searchbar:focus {
    border-color: var(--m-signal-warm);
    box-shadow: 0 0 0 2px rgba(245, 158, 66, 0.15);
}

/* ---------- Print styles — keep readable ---------- */

@media print {
    :root {
        --bg: #fff;
        --fg: #000;
    }
}