:root {
    --doc-bg: #070707;
    --doc-bg-soft: #121212;
    --doc-text: #ececec;
    --doc-muted: #b7b7b7;
    --doc-card: rgba(255, 255, 255, 0.06);
    --doc-border: rgba(255, 255, 255, 0.16);
    --doc-accent: #e0a3ff;
    --doc-accent-2: #9f9f9f;
    --doc-sidebar: rgba(0, 0, 0, 0.5);
    --doc-code-border: rgba(255, 255, 255, 0.12);
}

html[data-theme="light"] {
    --doc-bg: #f4f6f8;
    --doc-bg-soft: #ffffff;
    --doc-text: #111111;
    --doc-muted: #3e3e3e;
    --doc-card: rgba(255, 255, 255, 0.9);
    --doc-border: rgba(0, 0, 0, 0.14);
    --doc-accent: #6a2f8f;
    --doc-accent-2: #555555;
    --doc-sidebar: rgba(255, 255, 255, 0.86);
    --doc-code-border: rgba(0, 0, 0, 0.2);
}

body {
    background: radial-gradient(circle at 20% 10%, rgba(224, 163, 255, 0.16) 0%, transparent 35%),
        radial-gradient(circle at 85% 70%, rgba(255, 255, 255, 0.08) 0%, transparent 45%),
        linear-gradient(140deg, var(--doc-bg) 0%, var(--doc-bg-soft) 100%);
    color: var(--doc-text);
}

h1,
h2,
h3,
h4,
h5,
h6,
strong {
    color: var(--doc-text);
}

p,
li,
.lead {
    color: var(--doc-muted);
}

a {
    color: var(--doc-accent);
}

a:hover,
a:focus {
    color: var(--doc-text);
}

hr {
    border-top-color: var(--doc-border);
}

.section.docs-heading {
    padding: 46px 0 30px;
}

.big-title h1 {
    font-size: 42px;
    font-weight: 700;
    letter-spacing: .4px;
}

.doc-badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.doc-badges span {
    background: var(--doc-card);
    border: 1px solid var(--doc-border);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--doc-text);
}

.dark-text {
    font-size: 2.45rem;
    line-height: 1.22;
    font-weight: 650;
}

.dark-text hr {
    border-color: var(--doc-accent);
    opacity: .55;
}

.section {
    padding: 62px 0;
}

.docs-sidebar {
    background: var(--doc-sidebar);
    border: 1px solid var(--doc-border);
    border-radius: 14px;
    padding: 14px;
    backdrop-filter: blur(8px);
    position: sticky;
    top: 16px;
    max-height: calc(100vh - 32px);
    overflow: auto;
}

.affix,
.affix-bottom {
    position: static !important;
    width: auto !important;
}

.docs-sidebar .nav>li>a {
    color: var(--doc-muted);
    border-left: 2px solid transparent;
    background: transparent;
}

.docs-sidebar .nav>li:not(.active)>a:hover,
.docs-sidebar .nav>.active>a {
    color: var(--doc-text);
    border-left-color: var(--doc-accent);
}

.docs-sidebar .nav>li>a:hover,
.docs-sidebar .nav>li>a:focus,
.docs-sidebar .nav>.active>a,
.docs-sidebar .nav>.active>a:hover,
.docs-sidebar .nav>.active>a:focus {
    background: rgba(224, 163, 255, 0.14) !important;
    color: var(--doc-text) !important;
    text-decoration: none;
}

html[data-theme="light"] .docs-sidebar .nav>li>a:hover,
html[data-theme="light"] .docs-sidebar .nav>li>a:focus,
html[data-theme="light"] .docs-sidebar .nav>.active>a,
html[data-theme="light"] .docs-sidebar .nav>.active>a:hover,
html[data-theme="light"] .docs-sidebar .nav>.active>a:focus {
    background: rgba(106, 47, 143, 0.12) !important;
    color: #111111 !important;
}

.intro1,
.intro2,
.course-card {
    background: var(--doc-card);
    border: 1px solid var(--doc-border);
    border-radius: 14px;
}

.intro1,
.course-card {
    padding: 18px;
}

.intro2 {
    margin-top: 14px;
    padding: 14px 18px;
}

pre,
.syntaxhighlighter {
    border: 1px solid var(--doc-code-border);
    border-radius: 10px;
}

.syntaxhighlighter {
    background-color: #121826 !important;
    margin-top: 1.2em !important;
    padding: 10px 0 !important;
}

pre {
    background: #121826 !important;
    color: #f2f7ff !important;
}

.syntaxhighlighter .gutter,
.syntaxhighlighter .gutter .line {
    color: #7e8ca6 !important;
}

.syntaxhighlighter .plain,
.syntaxhighlighter .plain a {
    color: #f2f7ff !important;
}

.syntaxhighlighter .keyword,
.syntaxhighlighter .js.keyword,
.syntaxhighlighter .css.keyword {
    color: #ff8ec2 !important;
}

.syntaxhighlighter .string,
.syntaxhighlighter .string a {
    color: #8df7a4 !important;
}

.syntaxhighlighter .value,
.syntaxhighlighter .color1,
.syntaxhighlighter .color1 a {
    color: #86d8ff !important;
}

.syntaxhighlighter .comments,
.syntaxhighlighter .comments a {
    color: #8a9ab5 !important;
}

.syntaxhighlighter .functions,
.syntaxhighlighter .functions a {
    color: #ffd089 !important;
}

.syntaxhighlighter .color2,
.syntaxhighlighter .color2 a {
    color: #c7a0ff !important;
}

.syntaxhighlighter .script,
.syntaxhighlighter .script a {
    color: #ffb86b !important;
}

html[data-theme="light"] .syntaxhighlighter {
    background-color: #1d2330 !important;
    border-color: rgba(18, 26, 40, 0.4);
}

.mode-toggle {
    cursor: pointer;
    position: fixed;
    right: 16px;
    top: 16px;
    z-index: 999;
    border-radius: 999px;
    line-height: 0;
    border: 1px solid var(--doc-border);
    background: var(--doc-card);
    color: var(--doc-text);
    padding: 8px;
}

.mode-icon {
    display: inline-block;
    width: 24px;
    text-align: center;
    font-size: 16px;
}

html[data-theme="dark"] .mode-light,
html[data-theme="light"] .mode-dark {
    display: none;
}

#myBtn {
    background: var(--doc-accent);
    color: #111;
}

#myBtn:hover {
    opacity: .86;
}

.quiz-form {
    margin-top: 18px;
}

.quiz-block .quiz-generate {
    margin-bottom: 10px;
}

.quiz-question {
    padding: 14px;
    border: 1px solid var(--doc-border);
    border-radius: 10px;
    margin-bottom: 12px;
    background: rgba(255, 255, 255, 0.03);
}

.quiz-question p {
    margin: 0 0 10px;
    color: var(--doc-text);
    font-weight: 600;
}

.quiz-options label {
    display: block;
    margin: 6px 0;
    cursor: pointer;
    color: var(--doc-muted);
    font-weight: 400;
}

.quiz-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.quiz-result {
    margin-top: 12px;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--doc-border);
    color: var(--doc-text);
}

.quiz-good {
    background: rgba(86, 216, 125, 0.12);
}

.quiz-mid {
    background: rgba(255, 203, 95, 0.14);
}

.quiz-low {
    background: rgba(255, 113, 113, 0.13);
}

@media (max-width: 991px) {
    .docs-sidebar {
        margin-bottom: 24px;
    }

    .big-title h1 {
        font-size: 31px;
    }

    .dark-text {
        font-size: 2rem;
    }

    .section {
        padding: 44px 0;
    }
}