@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --gb-bg: #1d1d1d;
    --gb-surface: #222324;
    --gb-surface-2: #2b2c2d;
    --gb-surface-3: #343536;
    --gb-border: rgba(255, 255, 255, 0.08);
    --gb-border-strong: rgba(255, 255, 255, 0.14);
    --gb-text: #f4fbfd;
    --gb-text-soft: #c0c8cc;
    --gb-text-muted: #94a1a8;
    --gb-accent: #00beef;
    --gb-accent-2: #1cd6ff;
    --gb-accent-soft: rgba(0, 190, 239, 0.14);
    --gb-shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
    --content-max-width: 900px;
    --page-padding: 28px;
    --menu-bar-height: 64px;
    --sidebar-width: 320px;
    --sidebar-resize-indicator-width: 2px;
    --sidebar-resize-indicator-color: rgba(255, 255, 255, 0.06);
}

html,
body {
    background: var(--gb-bg);
}

html.navy,
html.coal,
html.ayu,
html.light,
html.rust {
    --bg: var(--gb-bg);
    --fg: var(--gb-text);
    --sidebar-bg: #1f2021;
    --sidebar-fg: var(--gb-text-soft);
    --sidebar-non-existant: #5f6a70;
    --sidebar-active: var(--gb-accent);
    --sidebar-spacer: transparent;
    --scrollbar: rgba(255, 255, 255, 0.12);
    --icons: var(--gb-text-soft);
    --icons-hover: var(--gb-text);
    --links: var(--gb-accent-2);
    --inline-code-color: #9fe8ff;
    --theme-popup-bg: #262728;
    --theme-popup-border: var(--gb-border-strong);
    --theme-hover: rgba(255, 255, 255, 0.08);
    --quote-bg: rgba(255, 255, 255, 0.035);
    --quote-border: var(--gb-accent);
    --table-border-color: var(--gb-border);
    --table-header-bg: rgba(255, 255, 255, 0.03);
    --table-alternate-bg: rgba(255, 255, 255, 0.015);
    --searchbar-border-color: var(--gb-border-strong);
    --searchbar-bg: var(--gb-surface);
    --searchbar-fg: var(--gb-text);
    --searchbar-shadow-color: transparent;
    --searchresults-header-fg: var(--gb-text-soft);
    --searchresults-border-color: var(--gb-border);
    --searchresults-li-bg: transparent;
    --search-mark-bg: rgba(0, 190, 239, 0.25);
}

html,
body,
.menu-title,
.content,
.chapter li a,
.nav-chapters,
.mobile-nav-chapters,
.icon-button,
code {
    font-family: "Inter", "Open Sans", ui-sans-serif, system-ui, sans-serif;
}

body {
    color: var(--gb-text);
}

#mdbook-body-container {
    background:
        radial-gradient(circle at top right, rgba(0, 190, 239, 0.12), transparent 26%),
        radial-gradient(circle at bottom left, rgba(0, 190, 239, 0.08), transparent 22%),
        var(--gb-bg);
}

#mdbook-menu-bar {
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: rgba(29, 29, 29, 0.86);
    border-bottom: 1px solid var(--gb-border);
    box-shadow: none;
}

.menu-bar > .left-buttons,
.menu-bar > .right-buttons {
    gap: 0.45rem;
}

.menu-title {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--gb-text);
}

.icon-button,
.nav-chapters,
.mobile-nav-chapters {
    border-radius: 14px;
    transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.icon-button:hover,
.nav-chapters:hover,
.mobile-nav-chapters:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--gb-text);
}

#mdbook-theme-toggle,
#mdbook-theme-list {
    display: none !important;
}

#mdbook-sidebar {
    background: linear-gradient(180deg, rgba(36, 37, 38, 0.98), rgba(29, 29, 29, 0.98));
    border-right: 1px solid var(--gb-border);
}

.sidebar-scrollbox {
    padding: 1rem 0.9rem 2rem;
}

.chapter {
    gap: 0.1rem;
}

.chapter li.chapter-item {
    margin: 0.08rem 0;
}

.chapter li a,
.chapter li span {
    border-radius: 12px;
    padding: 0.55rem 0.8rem;
    line-height: 1.25;
}

.chapter li a {
    color: var(--gb-text-soft);
    border: 1px solid transparent;
}

.chapter li a:hover {
    color: var(--gb-text);
    text-decoration: none;
    background: rgba(255, 255, 255, 0.045);
}

.chapter li a.active,
.chapter a.current-header {
    color: var(--gb-text);
    background: var(--gb-accent-soft);
    border-color: rgba(0, 190, 239, 0.28);
    box-shadow: inset 2px 0 0 var(--gb-accent);
}

.chapter > .chapter-item > .chapter-link-wrapper > a {
    font-weight: 600;
}

#mdbook-page-wrapper {
    background: transparent;
}

.content {
    padding-top: 2.25rem;
}

.content main {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--gb-border);
    border-radius: 24px;
    padding: 2.2rem 2.4rem 2.8rem;
    box-shadow: var(--gb-shadow);
}

.content h1,
.content h2,
.content h3,
.content h4 {
    color: var(--gb-text);
    letter-spacing: -0.025em;
}

.content h1 {
    font-size: 2.35rem;
    line-height: 1.05;
    font-weight: 800;
    margin-top: 0.2rem;
    margin-bottom: 1rem;
}

.content h2 {
    font-size: 1.5rem;
    font-weight: 750;
    margin-top: 2.6rem;
    padding-top: 0.35rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.content h3 {
    font-size: 1.12rem;
    font-weight: 700;
}

.content p,
.content li,
.content td,
.content th {
    color: var(--gb-text-soft);
    line-height: 1.68;
}

.content strong {
    color: var(--gb-text);
}

.content a {
    color: var(--gb-accent-2);
    text-decoration: none;
}

.content a:hover {
    color: #7deaff;
    text-decoration: none;
}

.content .header:link,
.content .header:visited {
    color: var(--gb-text);
}

.content code {
    background: rgba(255, 255, 255, 0.055);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    padding: 0.18rem 0.42rem;
    font-size: 0.9em;
}

.content pre {
    background: #202122;
    border: 1px solid var(--gb-border);
    border-radius: 20px;
    padding: 1rem 1.15rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

.content pre code {
    background: transparent;
    border: 0;
    padding: 0;
    border-radius: 0;
}

.content blockquote {
    margin: 1.35rem 0;
    padding: 0.8rem 1rem 0.8rem 1.15rem;
    background: rgba(255, 255, 255, 0.03);
    border-left: 3px solid var(--gb-accent);
    border-radius: 0 16px 16px 0;
}

.content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    overflow: hidden;
    border: 1px solid var(--gb-border);
    border-radius: 18px;
}

.content thead {
    background: rgba(255, 255, 255, 0.04);
}

.content tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.018);
}

.content th,
.content td {
    padding: 0.82rem 0.95rem;
}

.content hr {
    border-color: var(--gb-border);
}

.nav-wrapper,
.nav-wide-wrapper {
    margin-top: 1rem;
}

.nav-chapters,
.mobile-nav-chapters {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--gb-border);
}

.nav-chapters.next,
.nav-chapters.previous {
    border-radius: 16px;
}

#print-button,
#git-edit-button {
    opacity: 0.95;
}

.left-buttons,
.right-buttons {
    align-items: center;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.14);
    border-radius: 999px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

@media (max-width: 1080px) {
    .content {
        padding-top: 1.25rem;
    }

    .content main {
        border-radius: 0;
        border-left: 0;
        border-right: 0;
        padding: 1.4rem 1.1rem 2rem;
        background: transparent;
        box-shadow: none;
    }

    #mdbook-menu-bar {
        background: rgba(29, 29, 29, 0.92);
    }
}