/* drawlib Modern Developer Light Theme (default.css)
 * Inspired by VitePress (Vue/Vite) & Tailwind CSS documentation
 */
:root {
    --rtd-sidebar-bg: #f8fafc;
    --rtd-sidebar-header: #f8fafc;
    --rtd-sidebar-text: #475569;
    --rtd-sidebar-hover: #f1f5f9;
    --rtd-sidebar-active: #eef2ff;
    --rtd-sidebar-active-text: #4338ca;
    --rtd-brand-color: #4f46e5;
    --rtd-brand-dark: #3730a3;
    --rtd-heading-color: #0f172a;
    --rtd-text-color: #334155;
    --rtd-muted-color: #64748b;
    --rtd-bg-color: #f8fafc;
    --rtd-content-bg: #ffffff;
    --rtd-surface-bg: #f1f5f9;
    --rtd-border-color: #e2e8f0;
    --rtd-code-bg: #f8fafc;
    --rtd-inline-code-bg: #eef2ff;
    --rtd-inline-code-color: #4338ca;
    --rtd-note-bg: #eef2ff;
    --rtd-note-border: #6366f1;
    --rtd-code-keyword: #4f46e5;
    --rtd-code-string: #16a34a;
    --rtd-code-comment: #64748b;
    --rtd-code-number: #d97706;
    --rtd-code-function: #2563eb;
    --rtd-code-type: #9333ea;
    --rtd-code-operator: #475569;
    --rtd-code-builtin: #0284c7;
    --rtd-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Noto Sans CJK JP", "Yu Gothic", Meiryo, system-ui, sans-serif;
    --rtd-mono-font: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Noto Sans Mono CJK JP", monospace;
    --sidebar-width: 280px;

  --slide-primary: #4f46e5;
  --slide-secondary: #16a34a;
  --slide-accent: #d97706;
  --slide-yellow: #f59e0b;
  --slide-border: #e2e8f0;
  --slide-card-bg: #f8fafc;
  --slide-code-bg: #1e1b4b;
  --slide-code-text: #e0e7ff;
}

html[data-theme="dark"] {
    --rtd-sidebar-bg: #090d16;
    --rtd-sidebar-header: #090d16;
    --rtd-sidebar-text: #94a3b8;
    --rtd-sidebar-hover: #1e293b;
    --rtd-sidebar-active: #1e1b4b;
    --rtd-sidebar-active-text: #a5b4fc;
    --rtd-brand-color: #818cf8;
    --rtd-brand-dark: #6366f1;
    --rtd-heading-color: #f1f5f9;
    --rtd-text-color: #e2e8f0;
    --rtd-muted-color: #94a3b8;
    --rtd-bg-color: #090d16;
    --rtd-content-bg: #0f172a;
    --rtd-surface-bg: #1e293b;
    --rtd-border-color: #334155;
    --rtd-code-bg: #090d16;
    --rtd-inline-code-bg: #1e1b4b;
    --rtd-inline-code-color: #a5b4fc;
    --rtd-note-bg: #1e1b4b;
    --rtd-note-border: #6366f1;
    --rtd-code-keyword: #818cf8;
    --rtd-code-string: #4ade80;
    --rtd-code-comment: #94a3b8;
    --rtd-code-number: #fbbf24;
    --rtd-code-function: #60a5fa;
    --rtd-code-type: #c084fc;
    --rtd-code-operator: #cbd5e1;
    --rtd-code-builtin: #38bdf8;

    --slide-card-bg: #1e293b;
    --slide-border: #334155;
}



/* drawlib Code Highlighting and Code Blocks */
code {
    font-family: var(--rtd-mono-font);
    font-size: 0.88em;
    background-color: var(--rtd-inline-code-bg);
    color: var(--rtd-inline-code-color);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-weight: 500;
}

pre {
    background-color: var(--rtd-code-bg);
    border: 1px solid var(--rtd-border-color);
    border-radius: 8px;
    padding: 1.25rem;
    overflow-x: auto;
    font-size: 0.9em;
    line-height: 1.5;
}

pre code {
    background-color: transparent;
    color: inherit;
    padding: 0;
    border: none;
}

/* Pygments syntax highlighting tokens */
pre code .k, pre code .kc, pre code .kd, pre code .kn, pre code .kp, pre code .kr, pre code .kt { color: var(--rtd-code-keyword); font-weight: 600; }
pre code .s, pre code .sa, pre code .sb, pre code .sc, pre code .dl, pre code .sd, pre code .s2, pre code .se, pre code .sh, pre code .si, pre code .sx, pre code .sr, pre code .s1, pre code .ss { color: var(--rtd-code-string); }
pre code .c, pre code .ch, pre code .cm, pre code .cp, pre code .cpf, pre code .c1, pre code .cs { color: var(--rtd-code-comment); font-style: italic; }
pre code .m, pre code .mb, pre code .mf, pre code .mh, pre code .mi, pre code .mo, pre code .il { color: var(--rtd-code-number); }
pre code .nf, pre code .fm { color: var(--rtd-code-function); }
pre code .nc, pre code .ne, pre code .nn, pre code .nt { color: var(--rtd-code-type); font-weight: 600; }
pre code .na, pre code .nd, pre code .py { color: var(--rtd-code-type); font-weight: 600; }
pre code .nb, pre code .bp { color: var(--rtd-code-builtin); }
pre code .o, pre code .ow { color: var(--rtd-code-operator); }
pre code .err { color: #ef4444; }


/* drawlib Markdown Typography and Content Elements */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--rtd-font);
    font-size: 16px;
    line-height: 1.65;
    color: var(--rtd-text-color);
    background-color: var(--rtd-bg-color);
    margin: 0;
    padding: 0;
    transition: background-color 0.15s ease, color 0.15s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--rtd-font);
    color: var(--rtd-heading-color);
    margin-top: 2.2rem;
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 2.25rem;
    margin-top: 0;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--rtd-border-color);
}

h2 {
    font-size: 1.65rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--rtd-border-color);
}

h3 {
    font-size: 1.35rem;
}

h4 {
    font-size: 1.15rem;
}

p {
    margin-top: 0;
    margin-bottom: 1.25rem;
}

a {
    color: var(--rtd-brand-color);
    text-decoration: none;
    font-weight: 500;
}

a:hover {
    color: var(--rtd-brand-dark);
    text-decoration: underline;
}

ul, ol {
    margin-top: 0;
    margin-bottom: 1.25rem;
    padding-left: 2rem;
}

li {
    margin-bottom: 0.4rem;
}

li > ul, li > ol {
    margin-top: 0.4rem;
    margin-bottom: 0;
}

hr {
    border: none;
    border-top: 1px solid var(--rtd-border-color);
    margin: 2rem 0;
}

blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    background-color: var(--rtd-note-bg);
    border-left: 4px solid var(--rtd-note-border);
    color: var(--rtd-text-color);
    border-radius: 0 8px 8px 0;
}

blockquote p {
    margin: 0;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1.5rem 0;
    font-size: 0.95rem;
    border: 1px solid var(--rtd-border-color);
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    border-bottom: 1px solid var(--rtd-border-color);
    padding: 0.75rem 1rem;
    text-align: left;
}

tr:last-child td {
    border-bottom: none;
}

th {
    font-family: var(--rtd-font);
    background-color: var(--rtd-surface-bg);
    color: var(--rtd-heading-color);
    font-weight: 600;
}

tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.02);
}

.drawlib-image {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 2rem 0;
    padding: 1.25rem;
    background-color: #ffffff;
    border: 1px solid var(--rtd-border-color);
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.drawlib-image img, .drawlib-image svg {
    max-width: 100%;
    height: auto;
    display: block;
}

.drawlib-caption {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    color: var(--rtd-muted-color, #64748b);
    text-align: center;
    font-weight: 500;
    line-height: 1.4;
}

details.drawlib-code-details {
    margin: 1rem 0 2rem 0;
    border: 1px solid var(--rtd-border-color);
    border-radius: 8px;
    background-color: var(--rtd-code-bg);
    overflow: hidden;
}

.drawlib-image + details.drawlib-code-details {
    margin-top: -1rem;
}

details.drawlib-code-details summary {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--rtd-muted-color);
    cursor: pointer;
    user-select: none;
    transition: background-color 0.15s ease, color 0.15s ease;
}

details.drawlib-code-details summary:hover {
    color: var(--rtd-heading-color);
    background-color: var(--rtd-surface-bg);
}

details.drawlib-code-details[open] summary {
    border-bottom: 1px solid var(--rtd-border-color);
}

details.drawlib-code-details pre {
    margin: 0 !important;
    border: none !important;
    border-radius: 0 !important;
}

.drawlib-source-link {
    text-align: center;
    margin-top: -1.25rem;
    margin-bottom: 2rem;
    font-size: 0.88rem;
}

/* Admonition / Callout boxes */
.admonition {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    border-left: 4px solid var(--rtd-brand-color);
    background-color: var(--rtd-note-bg);
    border-radius: 0 8px 8px 0;
}

.admonition-title {
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--rtd-heading-color);
}


/* drawlib Web Documentation Site Layout (targets/site.css) */
.doc-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--rtd-sidebar-bg);
    flex-shrink: 0;
    border-right: 1px solid var(--rtd-border-color);
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: sticky;
    top: 0;
    overflow-y: auto;
}

.sidebar-header {
    background-color: var(--rtd-sidebar-header);
    padding: 1.1rem 1.25rem 0.35rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-shrink: 0;
}

.sidebar-subbar {
    background-color: var(--rtd-sidebar-header);
    border-bottom: 1px solid var(--rtd-border-color);
    padding: 0.2rem 1.25rem 0.85rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-shrink: 0;
}

.sidebar-version-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--rtd-mono-font);
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1;
    padding: 0.34rem 0.65rem;
    border-radius: 9999px;
    background-color: var(--rtd-sidebar-active);
    color: var(--rtd-sidebar-active-text);
    border: 1px solid rgba(99, 102, 241, 0.24);
    text-decoration: none;
    transition: all 0.15s ease;
}

.sidebar-version-badge:hover {
    border-color: var(--rtd-brand-color);
    color: var(--rtd-brand-color);
    text-decoration: none;
}

.sidebar-version-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--rtd-brand-color);
    flex-shrink: 0;
}

.sidebar-github-link {
    width: 36px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: 1px solid transparent;
    color: var(--rtd-muted-color);
    text-decoration: none;
    transition: all 0.15s ease;
    flex-shrink: 0;
}

.sidebar-github-link:hover {
    background-color: var(--rtd-sidebar-hover);
    color: var(--rtd-heading-color);
    border-color: var(--rtd-border-color);
    text-decoration: none;
}

.sidebar-github-link svg {
    width: 19px;
    height: 19px;
    display: block;
}

.site-title,
.sidebar-brand {
    font-family: var(--rtd-font);
    color: var(--rtd-heading-color);
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.site-title:hover,
.sidebar-brand:hover {
    color: var(--rtd-brand-color);
    text-decoration: none;
}

.sidebar-logo {
    height: 42px;
    width: auto;
    max-width: 100%;
    display: block;
    object-fit: contain;
    border-radius: 6px;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--rtd-border-color);
    border-radius: 8px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--rtd-muted-color);
    transition: all 0.2s ease;
    flex-shrink: 0;
    padding: 0;
}

.theme-toggle-btn:hover {
    background-color: var(--rtd-sidebar-hover);
    color: var(--rtd-brand-color);
    border-color: var(--rtd-brand-color);
}

.theme-toggle-btn svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.theme-toggle-btn .icon-sun { display: none; }
.theme-toggle-btn .icon-moon { display: block; }

@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) .theme-toggle-btn .icon-sun { display: block !important; }
    html:not([data-theme="light"]) .theme-toggle-btn .icon-moon { display: none !important; }
}

html[data-theme="light"] .theme-toggle-btn .icon-sun { display: none !important; }
html[data-theme="light"] .theme-toggle-btn .icon-moon { display: block !important; }

html[data-theme="dark"] .theme-toggle-btn .icon-sun { display: block !important; }
html[data-theme="dark"] .theme-toggle-btn .icon-moon { display: none !important; }

/* Sidebar Header & Action buttons */
.sidebar-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Mobile Hamburger Menu Toggle Button */
.menu-toggle-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--rtd-border-color);
    border-radius: 8px;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--rtd-muted-color);
    transition: all 0.2s ease;
    flex-shrink: 0;
    padding: 0;
}

.menu-toggle-btn:hover {
    background-color: var(--rtd-sidebar-hover);
    color: var(--rtd-brand-color);
    border-color: var(--rtd-brand-color);
}

.menu-toggle-btn svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.menu-toggle-btn .icon-close {
    display: none;
}

.menu-toggle-btn .icon-hamburger {
    display: block;
}

.sidebar.is-open .menu-toggle-btn .icon-hamburger {
    display: none;
}

.sidebar.is-open .menu-toggle-btn .icon-close {
    display: block;
}

/* Base default: Light logo visible, Dark logo hidden */
.sidebar-logo-light {
    display: block;
}

.sidebar-logo-dark {
    display: none;
}

/* Fallback for OS Dark mode when no explicit data-theme="light" is set */
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) .sidebar-logo-light {
        display: none !important;
    }
    html:not([data-theme="light"]) .sidebar-logo-dark {
        display: block !important;
    }
}

/* Explicit Light Mode Override: ALWAYS show light logo and hide dark logo */
html[data-theme="light"] .sidebar-logo-light,
.light .sidebar-logo-light {
    display: block !important;
}

html[data-theme="light"] .sidebar-logo-dark,
.light .sidebar-logo-dark {
    display: none !important;
}

/* Explicit Dark Mode Override: ALWAYS show dark logo and hide light logo */
html[data-theme="dark"] .sidebar-logo-light,
.dark .sidebar-logo-light {
    display: none !important;
}

html[data-theme="dark"] .sidebar-logo-dark,
.dark .sidebar-logo-dark {
    display: block !important;
}

.nav-tree,
.sidebar-menu {
    padding: 1rem 0;
    flex: 1;
}

.nav-section {
    margin-bottom: 1.25rem;
}

.nav-section-title,
.sidebar-heading {
    font-family: var(--rtd-font);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--rtd-muted-color);
    padding: 0.5rem 1.5rem;
    margin-top: 0.5rem;
}

.nav-items,
.nav-list {
    list-style: none;
    padding: 0;
    margin: 0 0 0.75rem 0;
}

.nav-item {
    margin: 0;
}

.nav-item a {
    font-family: var(--rtd-font);
    color: var(--rtd-sidebar-text);
    display: block;
    padding: 0.55rem 1.25rem;
    margin: 2px 0.5rem;
    font-size: 0.92rem;
    text-decoration: none;
    border-radius: 6px;
    border-left: 3px solid transparent;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.nav-item a:hover {
    background-color: var(--rtd-sidebar-hover);
    color: var(--rtd-heading-color);
}

.nav-item.active a {
    background-color: var(--rtd-sidebar-active);
    color: var(--rtd-sidebar-active-text);
    font-weight: 600;
    border-left-color: var(--rtd-brand-color);
}

.content-wrapper {
    flex: 1;
    background-color: var(--rtd-content-bg);
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.top-bar {
    background-color: var(--rtd-content-bg);
    border-bottom: 1px solid var(--rtd-border-color);
    padding: 0.85rem 2.5rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.breadcrumbs {
    font-family: var(--rtd-font);
    color: var(--rtd-muted-color);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.crumb {
    color: var(--rtd-brand-color);
    font-weight: 600;
}

.crumb.active {
    color: var(--rtd-text-color);
    font-weight: 400;
}

.crumb-separator {
    margin: 0 0.4rem;
    color: var(--rtd-border-color);
}

/* Multi-locale Language Switcher Dropdown */
.lang-switcher {
    position: relative;
    flex-shrink: 0;
}

.lang-dropdown {
    position: relative;
}

.lang-dropdown-btn {
    list-style: none;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.38rem 0.7rem;
    border: 1px solid var(--rtd-border-color);
    border-radius: 8px;
    background-color: var(--rtd-surface-bg);
    color: var(--rtd-text-color);
    font-family: var(--rtd-font);
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.2;
    cursor: pointer;
    user-select: none;
    transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.lang-dropdown-btn::-webkit-details-marker {
    display: none;
}

.lang-dropdown-btn:hover,
.lang-dropdown[open] .lang-dropdown-btn {
    border-color: var(--rtd-brand-color);
    color: var(--rtd-heading-color);
}

.lang-globe-icon,
.lang-caret-icon,
.lang-check-icon {
    width: 15px;
    height: 15px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

.lang-caret-icon {
    width: 14px;
    height: 14px;
    color: var(--rtd-muted-color);
    transition: transform 0.15s ease;
}

.lang-dropdown[open] .lang-caret-icon {
    transform: rotate(180deg);
}

.lang-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 160px;
    background-color: var(--rtd-content-bg);
    border: 1px solid var(--rtd-border-color);
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.12);
    padding: 0.35rem;
    z-index: 950;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

html[data-theme="dark"] .lang-dropdown-menu {
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
}

.lang-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    padding: 0.45rem 0.7rem;
    border-radius: 6px;
    font-family: var(--rtd-font);
    font-size: 0.86rem;
    color: var(--rtd-text-color);
    text-decoration: none;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.lang-option:hover {
    background-color: var(--rtd-sidebar-hover);
    color: var(--rtd-heading-color);
    text-decoration: none;
}

.lang-option.active {
    background-color: var(--rtd-sidebar-active);
    color: var(--rtd-sidebar-active-text);
    font-weight: 600;
}

.lang-check-icon {
    width: 14px;
    height: 14px;
    color: var(--rtd-brand-color);
}

.main-content {
    padding: 2.5rem 3rem 4rem 3rem;
    max-width: 960px;
    flex: 1;
}

.footer {
    border-top: 1px solid var(--rtd-border-color);
    padding: 1.75rem 2.5rem;
    font-size: 0.85rem;
    color: var(--rtd-muted-color);
    text-align: center;
}

@media (max-width: 768px) {
    .doc-layout {
        flex-direction: column;
        min-height: 100vh;
    }

    .sidebar {
        width: 100%;
        height: 60px;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        border-right: none;
        border-bottom: 1px solid var(--rtd-border-color);
        background-color: var(--rtd-sidebar-bg);
        overflow: visible;
    }

    .sidebar.is-open {
        border-bottom: none;
    }

    .content-wrapper {
        margin-top: 60px;
    }

    .sidebar-header {
        height: 60px;
        padding: 0 1.25rem;
        border-bottom: none;
    }

    .sidebar-subbar {
        display: none;
    }

    .sidebar.is-open .sidebar-subbar {
        display: flex;
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        height: 44px;
        padding: 0 1.25rem 0.4rem 1.25rem;
        background-color: var(--rtd-sidebar-bg);
        border-top: none;
        border-bottom: 1px solid var(--rtd-border-color);
        z-index: 1000;
    }

    .sidebar-logo {
        height: 32px;
    }

    .menu-toggle-btn {
        display: flex;
    }

    .sidebar-menu {
        display: none;
        position: fixed;
        top: 104px;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: calc(100vh - 104px);
        height: calc(100dvh - 104px);
        background-color: var(--rtd-sidebar-bg);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: 1rem 0.75rem 4rem 0.75rem;
        border-top: none;
        box-shadow: 0 16px 32px rgba(0, 0, 0, 0.18);
        z-index: 999;
    }

    .sidebar.is-open .sidebar-menu {
        display: block !important;
        animation: menuFadeIn 0.2s ease-out;
    }

    .nav-item a {
        padding: 0.65rem 1rem;
        font-size: 0.95rem;
    }

    body.menu-open {
        overflow: hidden;
    }

    .top-bar {
        padding: 0.75rem 1.25rem;
    }

    .main-content {
        padding: 1.5rem 1.25rem 3rem 1.25rem;
    }
}

@keyframes menuFadeIn {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Print & PDF Export Immunity: Ensure clean Light Mode in printed / PDF documents */
@media print {
    #theme-toggle,
    #menu-toggle,
    .lang-switcher,
    .drawlib-source-link {
        display: none !important;
    }

    html[data-theme="dark"] {
        --rtd-sidebar-bg: #f8fafc;
        --rtd-sidebar-header: #f8fafc;
        --rtd-sidebar-text: #475569;
        --rtd-sidebar-hover: #f1f5f9;
        --rtd-sidebar-active: #eef2ff;
        --rtd-sidebar-active-text: #4338ca;
        --rtd-brand-color: #4f46e5;
        --rtd-brand-dark: #3730a3;
        --rtd-heading-color: #0f172a;
        --rtd-text-color: #334155;
        --rtd-muted-color: #64748b;
        --rtd-bg-color: #f8fafc;
        --rtd-content-bg: #ffffff;
        --rtd-surface-bg: #f1f5f9;
        --rtd-border-color: #e2e8f0;
        --rtd-code-bg: #f8fafc;
        --rtd-inline-code-bg: #eef2ff;
        --rtd-inline-code-color: #4338ca;
        --rtd-note-bg: #eef2ff;
        --rtd-note-border: #6366f1;
    }

    html[data-theme="dark"] .sidebar-logo-light {
        display: block !important;
    }

    html[data-theme="dark"] .sidebar-logo-dark {
        display: none !important;
    }
}