.site-notice {
    max-width: 700px;
    margin: 24px auto; /* centers horizontally */
    text-align: center;

    background: #1e1e1e;
    border: 2px solid #ff9800;
    padding: 16px 20px;
    font-size: 0.95rem;
}

body {
    background-color: #0b0620;
    color: #e6e6f0;
    font-family:
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Ubuntu,
        Cantarell,
        "Noto Sans",
        Arial,
        sans-serif;
    font-size: 15px;
    line-height: 1.55;
    margin: 0;
    padding: 0;
}

b {
    font-weight: 900;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: #c084fc;
    margin-top: 20px;
    margin-bottom: 12px;
    text-shadow: none;
}

h1 {
    font-size: 2.2em;
}

h2 {
    font-size: 1.8em;
}

h3 {
    font-size: 1.5em;
}

h4,
h5,
h6 {
    font-size: 1.2em;
}

a {
    color: #a855f7;
    text-decoration: none;
    border-bottom: none;
}

a:hover {
    color: #c084fc;
    border-color: #f4a261;
    text-decoration: underline;
}

ul,
ol {
    padding-left: 30px;
}

code {
    background-color: #160c2f;
    border-radius: 6px;
    color: #a6e3a1;
    padding: 0.4em 0.6em;
    font-family: "Courier New", monospace;
}

pre code {
    background: none;
}

pre {
    background-color: #161b22;
    border-radius: 6px;
    padding: 1em;
    overflow: auto;
    box-shadow: none;
}

blockquote {
    background-color: #22113f;
    border-left: 4px solid #9333ea;
    padding-left: 2em;
    margin-left: 0;
    padding-top: 0.5em;
    padding-bottom: 0.5em;
    padding-right: 0.5em;
    color: #ddd;
    font-style: italic;
}

article img {
    width: 100%;
    max-width: 600px;
    aspect-ratio: 16 / 9;
    object-fit: contain;
    display: block;
    margin: 16px auto;
}

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: #1f1c25;
    border-radius: 6px;
}

::-webkit-scrollbar-thumb {
    background-color: #3c3c42;
    border-radius: 6px;
    border: 3px solid #1f1c25;
}

::-webkit-scrollbar-thumb:hover {
    background-color: #5a5466;
}

* {
    scrollbar-width: thin;
    scrollbar-color: #3c3c42 #1f1c25;
}

::-webkit-scrollbar-corner {
    background: #1f1c25;
}

.layout {
    display: grid;
    grid-template-columns: 260px 1fr 260px;
    min-height: 100vh;
}

.sidebar {
    margin-top: 24px;
    margin: 16px;
    padding: 16px 14px;
    background-color: #0b0620;
    flex-shrink: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.sidebar.left {
    justify-self: start;
    border-right: 1px solid #2d1b55;
    margin-right: 12px;
    padding-right: 32px;
}

.sidebar.right {
    border-left: 1px solid #2d1b55;
    color: #9aa0a6;
    font-size: 0.9em;
}

.sidebar h2,
.sidebar h3 {
    margin-top: 0;
}

.sidebar h2 {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.sidebar h3 {
    font-size: 0.95rem;
    margin-top: 16px;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #9aa0a6;
}

.sidebar ul {
    list-style: none;
    padding-left: 0;
}

/* Indent nested sidebar items (doc-style) */
.sidebar ul ul {
    padding-left: 18px; /* indentation */
    margin-top: 6px;
    display: none;
}
/* Child items (pages) */
.sidebar ul ul a {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: normal;
    color: #c9d1d9;
}

.sidebar li {
    margin-bottom: 8px;
}
.sidebar li.open > ul {
    display: block;
}

.sidebar li > span {
    cursor: pointer;
    color: #9aa0a6;
}
.sidebar li > span:hover {
    text-decoration: underline;
}
/* Optional: subtle visual guide */
.sidebar ul ul li {
    position: relative;
}
/* Optional: vertical guide line (docs feel) */
.sidebar ul ul li::before {
    content: "";
    position: absolute;
    left: -10px;
    top: 0.2em;
    bottom: 0.2em;
    width: 1px;
    background-color: #1f2937;
}
.sidebar a {
    color: #e6e6f0;
    text-decoration: none;
}

.sidebar a:hover {
    color: #c9d1d9;
    text-decoration: underline;
}

/* Sidebar top-level sections (doc-style) */
.sidebar > ul > li > span,
.sidebar > ul > li > a {
    font-size: 1.05rem; /* bigger */
    font-weight: 600;
    color: #c084fc; /* same as h1/h2 */
    cursor: pointer;
    text-transform: capitalize;
}

.content {
    padding: 16px 24px;
    display: flex;
    justify-content: center;
}

.content article {
    max-width: 1050px;
    width: 100%;
}

@media (max-width: 1200px) {
    .layout {
        grid-template-columns: 220px 1fr;
    }

    .sidebar.right {
        display: none;
    }
}

@media (max-width: 900px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        margin: 8px;
    }

    .sidebar.left,
    .sidebar.right {
        border: none;
    }

    .sidebar.left {
        width: 100%;
        order: -1;
    }
}