xjs/doc/demo.css

:root {
    --bg-color: #111;
    --text-color: #9b9b9b;
    --highlight-color: #ff4b4b;
    --secondary-color: #2a2a2e;
    --accent-color: #ff9f43;
    --code-bg: #000;
    --orange: #FF8F42;
    --border-color: #222;
    --panel-bg: #171717;
    --panel-bg-2: #141414;
    --muted-1: #666;
    --muted-2: #888;
    --text-strong: #e6e6e6;
    --shadow-1: 0 10px 40px rgba(0,0,0,0.25);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    margin: 0;
    padding: 60px 60px;
    display: flex;
    justify-content: center;
    overflow-y: auto;
}

/* Auto-hide scrollbar (shown only on scroll/hover via parent) */
html, body {
    scrollbar-width: none; /* Firefox (hidden by default) */
    -ms-overflow-style: none; /* IE/old Edge */
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
    width: 0 !important;
    height: 0 !important;
}

/* Some pages may scroll a nested container; hide vertical scrollbars by default */
*::-webkit-scrollbar:vertical {
    width: 0 !important;
}

/* Shown when scrolling (class is toggled by doc/index.html) */
html.scrolling,
body.scrolling {
    scrollbar-width: thin; /* Firefox */
    scrollbar-color: rgba(0, 0, 0, 0.9) transparent;
}

html.scrolling::-webkit-scrollbar,
body.scrolling::-webkit-scrollbar {
    width: 6px !important;
    height: 6px !important;
}

html.scrolling::-webkit-scrollbar-track,
body.scrolling::-webkit-scrollbar-track {
    background: transparent;
}

html.scrolling::-webkit-scrollbar-thumb,
body.scrolling::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.95) !important;
    border-radius: 999px;
}

html.scrolling::-webkit-scrollbar-thumb:hover,
body.scrolling::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 1);
}

/* Show vertical scrollbars (narrow + black) for any scrolled container while scrolling */
html.scrolling *::-webkit-scrollbar:vertical,
body.scrolling *::-webkit-scrollbar:vertical {
    width: 6px !important;
}

html.scrolling *::-webkit-scrollbar-thumb,
body.scrolling *::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.95) !important;
    border-radius: 999px;
}

html.scrolling *::-webkit-scrollbar-track,
body.scrolling *::-webkit-scrollbar-track {
    background: transparent !important;
}

.container {
   
    width: 100%;
}

h1 {
    color: var(--orange);
    font-size: 42px;
    margin-bottom: 15px;
    font-weight: 600;
    letter-spacing: -1px;
}

.description {
    font-size: 18px;
    line-height: 1.5;
    margin-bottom: 40px;
    color: #ccc;
}

h2 {
    font-size: 24px;
    color: #fff;
    margin-bottom: 10px;
    font-weight: 500;
}

p {
    margin-top: 0;
    margin-bottom: 20px;
    line-height: 1.6;
}

code.inline {
    background: rgba(255,255,255,0.1);
    color: #e6e6e6;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9em;
}

/* Page top meta (breadcrumb + since) */
.page-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.crumb {
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--highlight-color);
    text-transform: uppercase;
}

.since {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    color: #7a6a55;
    text-transform: uppercase;
}

/* Code & Demo Box */
.box-container {
    margin-top: 50px;
    background: var(--panel-bg);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: var(--shadow-1);
}

.box-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 50px;
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--border-color);
}

.box-title {
    color: var(--orange);
    font-weight: 600;
    font-size: 14px;
}

.box-right {
    display: flex;
    align-items: center;
    gap: 14px;
    height: 100%;
}

.tabs {
    display: flex;
    gap: 20px;
    height: 100%;
}

.tab {
    display: flex;
    align-items: center;
    height: 100%;
    cursor: pointer;
    color: #666;
    font-weight: 600;
    font-size: 13px;
    border-bottom: 2px solid transparent;
    transition: color 0.2s;
}

.tab:hover {
    color: #999;
}

.tab.active {
    color: var(--orange);
    border-bottom-color: var(--orange);
}

/* Code Views */
.code-view, .html-view, .css-view {
    background: var(--code-bg);
    padding: 20px;
    font-family: 'Roboto Mono', 'Monaco', monospace;
    font-size: 13px;
    line-height: 1.6;
    color: #abb2bf;
    overflow-x: auto;
    display: none;
    white-space: pre; /* Use pre to respect indentation */
    margin: 0;
}

.code-view.active, .html-view.active, .css-view.active {
    display: block;
}

/* Reduce background paint cost while a layer is open */
.layer-open .box-header,
.layer-open .code-view,
.layer-open .html-view,
.layer-open .css-view,
.layer-open .feature-desc {
    visibility: hidden;
}

/* Syntax Highlighting */
.kwd { color: #c678dd; }
.str { color: #98c379; }
.fun { color: #61afef; }
.num { color: #d19a66; }
.tag { color: #e06c75; }
.attr { color: #d19a66; }
.val { color: #98c379; }
.punc { color: #abb2bf; }
.com { color: #5c6370; font-style: italic; }

/* Header icon buttons (copy, etc.) */
.icon-btn {
    appearance: none;
    border: 1px solid transparent;
    background: transparent;
    color: #777;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.icon-btn:hover {
    color: #b0b0b0;
    border-color: #2a2a2a;
    background: rgba(255,255,255,0.03);
}

.icon-btn:active {
    transform: translateY(1px);
}

.icon-btn svg {
    width: 16px;
    height: 16px;
    display: block;
}

/* Visual Demo Area */
.demo-visual {
    padding: 30px;
    background: #1a1a1a;
    border-top: 1px solid var(--border-color);
    min-height: 150px;
    /* Flex alignment defaults, can be overridden by specific page styles */
    display: flex;
    flex-direction: column; 
    justify-content: center;
}

.action-bar {
    padding: 15px 30px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 10px;
    border-top: 1px solid var(--border-color);
}

.play-btn {
    background: transparent;
    border: 1px solid #444;
    color: #fff;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.play-btn:hover {
    border-color: var(--orange);
    color: var(--orange);
}

/* Secondary action button (pause/resume) */
.play-btn.secondary {
    border-color: #2f2f2f;
    color: #c8c8c8;
    background: rgba(255, 255, 255, 0.02);
}

.play-btn.secondary:hover {
    border-color: #5a5a5a;
    color: #e6e6e6;
}

/* Small per-demo note block (feature description) */
.feature-desc {
    padding: 14px 20px;
    border-top: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.01);
    color: #9a9a9a;
    font-size: 12px;
    line-height: 1.6;
}

.feature-desc strong {
    color: #ddd;
    font-weight: 700;
}

/* Toast */
.toast {
    position: fixed;
    right: 16px;
    bottom: 16px;
    background: rgba(20,20,20,0.95);
    border: 1px solid #2a2a2a;
    color: #ddd;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 12px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.35);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.18s, transform 0.18s;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* Previous / Next nav */
.doc-nav {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #aaa;
    font-size: 12px;
}

.doc-nav a {
    color: #aaa;
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid transparent;
    min-width: 180px;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    background: rgba(255,255,255,0.02);
}

.doc-nav a:hover {
    border-color: #2a2a2a;
    background: rgba(255,255,255,0.03);
    color: #ddd;
}

.doc-nav .nav-label {
    color: #777;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-size: 10px;
}

.doc-nav .nav-title {
    color: #cfcfcf;
    font-weight: 600;
    font-size: 12px;
}

.doc-nav .nav-center {
    color: #7a7a7a;
    font-weight: 600;
    letter-spacing: 0.4px;
}