/* Nervix mdBook theme. Inspired by the public site treatment: dark grid,
   cyan/violet accents, restrained technical chrome. */

:root {
    --content-max-width: 920px;
    --menu-bar-height: 64px;
    --page-padding: 28px;
    --mono-font: "Source Code Pro", "JetBrains Mono", Consolas, Menlo, monospace;
    --nervix-bg: #050913;
    --nervix-bg-soft: #09111f;
    --nervix-panel: rgba(8, 13, 31, 0.88);
    --nervix-panel-strong: rgba(9, 14, 34, 0.96);
    --nervix-line: rgba(34, 110, 190, 0.23);
    --nervix-line-soft: rgba(95, 113, 247, 0.18);
    --nervix-text: #f7f8ff;
    --nervix-muted: #96a6ce;
    --nervix-cyan: #17c9ef;
    --nervix-blue: #2aa8e8;
    --nervix-violet: #7d5cff;
    --nervix-warning: #a78bfa;
    --nervix-shadow: 0 22px 80px rgba(0, 0, 0, 0.42);
}

.light,
.rust,
.coal,
.navy,
.ayu,
html:not(.js) {
    --bg: var(--nervix-bg);
    --fg: var(--nervix-text);
    --sidebar-bg: rgba(6, 11, 24, 0.94);
    --sidebar-fg: #b9c4e4;
    --sidebar-non-existant: #52607f;
    --sidebar-active: var(--nervix-cyan);
    --sidebar-spacer: rgba(45, 72, 135, 0.35);
    --scrollbar: #516184;
    --icons: #92a1c9;
    --icons-hover: #ffffff;
    --links: #49d6ff;
    --inline-code-color: #b38cff;
    --theme-popup-bg: #090f22;
    --theme-popup-border: rgba(75, 98, 185, 0.6);
    --theme-hover: rgba(31, 54, 116, 0.38);
    --quote-bg: rgba(11, 21, 46, 0.76);
    --quote-border: rgba(23, 201, 239, 0.48);
    --warning-border: var(--nervix-warning);
    --table-border-color: rgba(76, 112, 190, 0.28);
    --table-header-bg: rgba(17, 31, 69, 0.95);
    --table-alternate-bg: rgba(14, 25, 54, 0.48);
    --searchbar-border-color: rgba(54, 208, 255, 0.46);
    --searchbar-bg: rgba(5, 9, 19, 0.96);
    --searchbar-fg: var(--nervix-text);
    --searchbar-shadow-color: rgba(23, 201, 239, 0.22);
    --searchresults-header-fg: var(--nervix-muted);
    --searchresults-border-color: rgba(75, 98, 185, 0.55);
    --searchresults-li-bg: rgba(11, 20, 47, 0.96);
    --search-mark-bg: rgba(125, 92, 255, 0.55);
    --color-scheme: dark;
}

html {
    background: var(--nervix-bg);
}

body {
    color: var(--nervix-text);
    background:
        radial-gradient(circle at 86% 18%, rgba(125, 92, 255, 0.17), transparent 34rem),
        radial-gradient(circle at 67% 36%, rgba(23, 201, 239, 0.11), transparent 30rem),
        linear-gradient(180deg, #050913 0%, #050913 58%, #070d19 100%);
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    content: "";
    background-image:
        linear-gradient(rgba(34, 110, 190, 0.11) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 110, 190, 0.11) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.94), rgba(0, 0, 0, 0.68));
}

#mdbook-body-container {
    position: relative;
    padding-block-start: 36px;
}

#mdbook-body-container::before {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    z-index: 120;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-block-start: 1px solid rgba(160, 139, 255, 0.38);
    border-block-end: 1px solid rgba(100, 82, 182, 0.32);
    color: #b7acd9;
    background: rgba(32, 27, 58, 0.95);
    box-shadow: 0 0 28px rgba(125, 92, 255, 0.14);
    content: "•  Nervix is in early development - APIs and syntax are subject to change.";
    font-size: 1.28rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.page-wrapper {
    background: transparent;
}

.page {
    padding-inline: var(--page-padding);
}

#mdbook-menu-bar-hover-placeholder,
#mdbook-menu-bar {
    margin-inline: calc(0px - var(--page-padding));
}

#mdbook-menu-bar {
    min-height: var(--menu-bar-height);
    padding-inline: clamp(1rem, 5vw, 7rem);
    border-block-end: 1px solid rgba(40, 78, 142, 0.36);
    background: rgba(5, 9, 19, 0.78);
    backdrop-filter: blur(18px);
}

#mdbook-menu-bar.sticky,
#mdbook-menu-bar-hover-placeholder:hover + #mdbook-menu-bar,
#mdbook-menu-bar:hover,
html.sidebar-visible #mdbook-menu-bar {
    top: 36px !important;
}

#mdbook-menu-bar.bordered {
    border-block-end-color: rgba(52, 104, 190, 0.42);
}

.menu-title {
    color: #ffffff;
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: 0;
    text-shadow: 0 0 24px rgba(23, 201, 239, 0.17);
}

.menu-title::before {
    display: inline-block;
    width: 3.2rem;
    height: 3.2rem;
    margin-inline-end: 1.1rem;
    vertical-align: -0.82rem;
    background: url("nervix-mark.svg") center / contain no-repeat;
    filter: drop-shadow(0 0 14px rgba(23, 201, 239, 0.28));
    content: "";
}

/* mdBook renders menu-bar icons as inline `.fa-svg` spans that inherit color. */
#mdbook-menu-bar .fa-svg,
#mdbook-menu-bar .icon-button {
    color: #94a3cf;
}

#mdbook-menu-bar .fa-svg:hover,
#mdbook-menu-bar .icon-button:hover {
    color: #ffffff;
}

.right-buttons a:last-child .fa-svg,
#mdbook-search-toggle,
#mdbook-theme-toggle {
    color: var(--nervix-cyan);
}

#mdbook-sidebar {
    top: 36px;
    border-inline-end: 1px solid rgba(48, 78, 156, 0.38);
    background:
        linear-gradient(180deg, rgba(8, 14, 33, 0.98), rgba(5, 9, 19, 0.98)),
        var(--sidebar-bg);
    box-shadow: 18px 0 60px rgba(0, 0, 0, 0.28);
}

.sidebar .sidebar-resize-handle {
    top: 0;
}

.sidebar-scrollbox {
    padding-block-start: 1.25rem;
}

.chapter {
    color: var(--sidebar-fg);
}

.chapter li {
    margin-block: 0.1rem;
}

/* `.chapter-link-wrapper` is a flex row holding the link and the fold chevron,
   so the link grows instead of being sized against the wrapper. */
.chapter li a {
    box-sizing: border-box;
    flex: 1;
    padding: 0.2rem 0.72rem;
    border-radius: 6px;
    color: #aebbe1;
    font-weight: 500;
    line-height: 1.45;
}

.chapter li a strong {
    color: #8fa0c8;
    font-weight: inherit;
}

.chapter li a:hover {
    color: #ffffff;
    background: rgba(23, 201, 239, 0.08);
    text-decoration: none;
}

.chapter li a.active {
    color: var(--nervix-cyan);
    background: linear-gradient(90deg, rgba(23, 201, 239, 0.16), rgba(23, 201, 239, 0.04));
    box-shadow: inset 2px 0 0 var(--nervix-cyan);
    font-weight: 650;
}

.chapter li a.active strong {
    color: var(--nervix-cyan);
}

.content {
    padding-block-end: 8rem;
}

.content main {
    max-width: var(--content-max-width);
    padding-block: clamp(3rem, 6vw, 6rem);
}

.content main::before {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    margin-block-end: 2.4rem;
    padding: 0.52rem 1.2rem;
    border: 1px solid rgba(23, 201, 239, 0.36);
    border-radius: 999px;
    color: var(--nervix-cyan);
    background: rgba(8, 48, 68, 0.48);
    content: "NSPL RUNTIME ENGINE";
    font-family: var(--mono-font);
    font-size: 1.18rem;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.content h1,
.content h2,
.content h3 {
    color: #ffffff;
    letter-spacing: 0;
}

.content h1 {
    max-width: 14ch;
    margin-block: 0 2.2rem;
    font-size: clamp(4.4rem, 8vw, 8.6rem);
    line-height: 0.96;
    font-weight: 800;
}

.content h1 .header {
    color: #ffffff;
}

.content h2 {
    border-block-start: 1px solid rgba(52, 104, 190, 0.26);
    padding-block-start: 2.5rem;
    font-size: 3.2rem;
}

.content h3 {
    font-size: 2.35rem;
}

.content p,
.content li {
    color: var(--nervix-muted);
    font-size: 1.72rem;
    line-height: 1.72;
}

.content strong,
.content li::marker {
    color: #ffffff;
}

.content a:link,
.content a:visited,
#mdbook-searchresults a {
    color: var(--nervix-cyan);
    font-weight: 700;
}

.content a:hover {
    color: #8feaff;
}

pre,
.hljs {
    border-radius: 8px;
}

pre {
    border: 1px solid rgba(36, 79, 177, 0.55);
    background: var(--nervix-panel-strong) !important;
    box-shadow: var(--nervix-shadow);
}

:not(pre) > .hljs {
    border: 1px solid rgba(125, 92, 255, 0.26);
    border-radius: 5px;
    color: #c7adff;
    background: rgba(12, 19, 43, 0.92);
}

blockquote,
.warning {
    border-radius: 8px;
    box-shadow: inset 0 0 0 1px rgba(70, 111, 190, 0.2);
}

.content img {
    display: block;
    max-width: 100%;
    height: auto;
    margin-block: 2.4rem;
    border: 1px solid rgba(36, 79, 177, 0.55);
    border-radius: 8px;
    box-shadow: var(--nervix-shadow);
}

table {
    width: 100%;
    border: 1px solid var(--table-border-color);
    border-radius: 8px;
    overflow: hidden;
    background: rgba(6, 12, 28, 0.68);
    box-shadow: var(--nervix-shadow);
}

table th,
table td {
    padding: 0.9rem 1.2rem;
}

#mdbook-search-wrapper {
    border-block-end: 1px solid rgba(52, 104, 190, 0.28);
    background: rgba(5, 9, 19, 0.85);
    backdrop-filter: blur(16px);
}

#mdbook-searchbar {
    border-radius: 8px;
}

.nav-chapters {
    color: rgba(73, 214, 255, 0.72);
}

.nav-chapters:hover,
.mobile-nav-chapters:hover {
    background: rgba(23, 201, 239, 0.08);
}

@media only screen and (max-width: 700px) {
    :root {
        --page-padding: 18px;
        --menu-bar-height: 58px;
    }

    #mdbook-body-container::before {
        padding-inline: 1rem;
        font-size: 1.08rem;
        text-align: center;
    }

    #mdbook-menu-bar {
        padding-inline: 0.75rem;
    }

    .menu-title {
        font-size: 1.35rem;
    }

    .menu-title::before {
        width: 2.6rem;
        height: 2.6rem;
        margin-inline-end: 0.65rem;
        vertical-align: -0.72rem;
    }

    .content main {
        padding-block-start: 3.2rem;
    }

    .content h1 {
        max-width: 100%;
        font-size: 4.2rem;
    }

    .content p,
    .content li {
        font-size: 1.58rem;
    }
}

@media print {
    #mdbook-body-container {
        padding-block-start: 0;
    }

    #mdbook-body-container::before,
    body::before,
    .content main::before,
    .menu-title::before {
        display: none;
    }

    body,
    .page-wrapper {
        background: #ffffff;
    }
}