/* UI Essentials Docs - same palette as UI Essentials Studio */
:root {
  --bg: #050409;
  --bg2: #0a0812;
  --card: #0e0c17;
  --card2: #141120;
  --line: #1e1a2e;
  --line2: #2b2541;
  --text: #ece8f8;
  --muted: #a7a1c2;
  --dim: #6f6890;
  --accent: #8b5cf6;
  --accent2: #c084fc;
  --accent-rgb: 139, 92, 246;
  --grad: linear-gradient(135deg, #d8b4fe 0%, #a855f7 38%, #7c3aed 70%, #5b5bf0 100%);
  --glow: 0 6px 22px rgba(124, 58, 237, .35);
  --ok: #34d399; --warn: #fbbf24; --bad: #fb7185; --info: #60a5fa;
  --mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-family: "Poppins", "Segoe UI", system-ui, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { min-height: 100vh; }
a { color: var(--accent2); }
.hidden { display: none !important; }
::selection { background: rgba(var(--accent-rgb), .45); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--line2); border-radius: 10px; border: 2px solid transparent; background-clip: content-box; }
kbd { font: 600 10.5px var(--mono); color: var(--muted); border: 1px solid var(--line2); border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px; background: var(--bg2); }

/* ---- top bar ---- */
#top { position: sticky; top: 0; z-index: 40; height: 64px; display: flex; align-items: center; gap: 18px; padding: 0 22px;
  background: rgba(5, 4, 9, .88); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; font-weight: 800; font-size: 16.5px; white-space: nowrap; }
.brand em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand small { font-weight: 600; font-size: 11px; color: var(--muted); border: 1px solid var(--line2); padding: 2px 7px; border-radius: 6px; margin-left: 4px; vertical-align: 2px; }
.logo { width: 32px; height: 32px; border-radius: 9px; background: var(--grad); display: grid; place-items: center; color: #fff; font-weight: 900; font-size: 13px; box-shadow: var(--glow); }
.top-links { display: flex; gap: 8px; margin-left: 18px; }
.pill { display: inline-flex; align-items: center; gap: 7px; padding: 8px 14px; border-radius: 8px; background: var(--card2); border: 1px solid var(--line2);
  color: #fff; text-decoration: none; font-weight: 700; font-size: 12.5px; transition: background .15s, border-color .15s; }
.pill span { color: var(--accent2); }
.pill:hover { border-color: rgba(var(--accent-rgb), .6); background: #1a1529; }
.search-box { margin-left: auto; width: 340px; max-width: 40vw; display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 10px;
  background: var(--card); border: 1px solid var(--line2); color: var(--dim); font: inherit; font-size: 13px; cursor: pointer; text-align: left; }
.search-box .ph { flex: 1; }
.search-box:hover { border-color: rgba(var(--accent-rgb), .55); }
.icon-btn { display: none; background: none; border: 0; color: #fff; font-size: 20px; cursor: pointer; padding: 6px; }

/* ---- layout ---- */
#layout { display: grid; grid-template-columns: 290px minmax(0, 1fr) 230px; max-width: 1560px; margin: 0 auto; }
#side { position: sticky; top: 64px; height: calc(100vh - 64px); overflow-y: auto; padding: 22px 14px 40px 22px; border-right: 1px solid var(--line); }
#toc { position: sticky; top: 64px; height: calc(100vh - 64px); overflow-y: auto; padding: 34px 18px; }
#main { min-width: 0; padding: 28px 44px 80px; }

/* sidebar */
.nav-group { margin-bottom: 18px; }
.nav-group > h6 { margin: 0 0 8px 10px; font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--dim); font-weight: 700; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 9px; color: #cfc9e6; text-decoration: none; font-size: 13.5px; font-weight: 500; cursor: pointer; user-select: none; }
.nav-item .ic { width: 22px; text-align: center; color: var(--accent2); font-size: 14px; flex: none; }
.nav-item .chev { margin-left: auto; color: var(--dim); font-size: 11px; transition: transform .15s; }
.nav-item:hover { background: var(--card2); color: #fff; }
.nav-item.open .chev { transform: rotate(90deg); }
.nav-item.active { background: rgba(var(--accent-rgb), .14); color: #fff; box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), .45); }
.nav-sub { margin: 2px 0 6px 21px; padding-left: 12px; border-left: 1px solid var(--line2); display: none; }
.nav-sub.open { display: block; }
.nav-sub a { display: block; padding: 6px 10px; border-radius: 7px; color: var(--muted); text-decoration: none; font-size: 13px; }
.nav-sub a:hover { color: #fff; background: var(--card2); }
.nav-sub a.active { color: #fff; background: rgba(var(--accent-rgb), .16); box-shadow: inset 2px 0 0 var(--accent); }

/* toc */
#toc h6 { margin: 0 0 10px; font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--dim); }
#toc a { display: block; color: var(--muted); text-decoration: none; font-size: 12.5px; padding: 5px 0 5px 12px; border-left: 2px solid var(--line); line-height: 1.4; }
#toc a.h3 { padding-left: 24px; font-size: 12px; }
#toc a:hover { color: #fff; }
#toc a.on { color: #fff; border-left-color: var(--accent); }

/* ---- page ---- */
#page { max-width: 860px; }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 11.5px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--accent2); margin-bottom: 12px; }
.crumbs a { color: inherit; text-decoration: none; } .crumbs a:hover { color: #fff; }
.crumbs .sep { color: var(--dim); }
.page-title { display: flex; align-items: center; gap: 14px; margin: 0 0 10px; font-size: 36px; line-height: 1.15; font-weight: 800; color: #fff; letter-spacing: -.01em; }
.page-title .ic { width: 46px; height: 46px; flex: none; border-radius: 12px; display: grid; place-items: center; background: rgba(var(--accent-rgb), .15); border: 1px solid rgba(var(--accent-rgb), .35); color: var(--accent2); font-size: 22px; }
.lead { font-size: 16px; line-height: 1.7; color: var(--muted); margin: 0 0 28px; }
.content { font-size: 15px; line-height: 1.75; color: #d6d1ea; }
.content h2 { font-size: 24px; color: #fff; margin: 44px 0 12px; padding-top: 8px; letter-spacing: -.005em; scroll-margin-top: 84px; }
.content h3 { font-size: 18px; color: #fff; margin: 30px 0 8px; scroll-margin-top: 84px; }
.content h2 .anchor, .content h3 .anchor { opacity: 0; margin-left: 8px; color: var(--dim); text-decoration: none; font-weight: 400; }
.content h2:hover .anchor, .content h3:hover .anchor { opacity: 1; }
.content p { margin: 0 0 14px; }
.content ul, .content ol { padding-left: 22px; margin: 0 0 16px; }
.content li { margin: 4px 0; }
.content strong, .content b { color: #fff; }
.content code { font-family: var(--mono); font-size: 13px; background: #171329; border: 1px solid #272043; padding: 1px 6px; border-radius: 6px; color: #e9ddff; white-space: nowrap; }
.content hr { border: 0; border-top: 1px solid var(--line); margin: 34px 0; }

/* code blocks */
.code { position: relative; margin: 14px 0 20px; border-radius: 12px; border: 1px solid var(--line2); background: #08060f; overflow: hidden; }
.code-head { display: flex; align-items: center; justify-content: space-between; padding: 7px 12px; background: #0f0c19; border-bottom: 1px solid var(--line); font: 600 11px var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .06em; }
.copy { background: none; border: 1px solid var(--line2); color: var(--muted); border-radius: 6px; font: 600 11px "Poppins", sans-serif; padding: 3px 9px; cursor: pointer; text-transform: none; letter-spacing: 0; }
.copy:hover { color: #fff; border-color: rgba(var(--accent-rgb), .6); }
.copy.ok { color: var(--ok); border-color: var(--ok); }
.code pre { margin: 0; padding: 14px 16px; overflow-x: auto; font: 13px/1.65 var(--mono); color: #e7e2f7; }
.code pre code { background: none; border: 0; padding: 0; white-space: pre; font-size: inherit; color: inherit; }
.tk-k { color: #c4a5ff; } .tk-s { color: #86efac; } .tk-n { color: #fbbf24; } .tk-c { color: #6f6890; font-style: italic; }
.tk-t { color: #93c5fd; } .tk-a { color: #f9a8d4; } .tk-p { color: #fca5a5; } .tk-v { color: #67e8f9; }

/* callouts */
.callout { display: flex; gap: 12px; padding: 14px 16px; border-radius: 12px; margin: 18px 0; border: 1px solid; font-size: 14.5px; line-height: 1.65; }
.callout .ci { font-size: 16px; line-height: 1.5; flex: none; }
.callout p:last-child { margin-bottom: 0; }
.callout.tip { background: rgba(var(--accent-rgb), .08); border-color: rgba(var(--accent-rgb), .35); }
.callout.info { background: rgba(96, 165, 250, .07); border-color: rgba(96, 165, 250, .35); }
.callout.warn { background: rgba(251, 191, 36, .07); border-color: rgba(251, 191, 36, .35); }
.callout.danger { background: rgba(251, 113, 133, .07); border-color: rgba(251, 113, 133, .4); }
.callout b.t { display: block; color: #fff; margin-bottom: 2px; }

/* tables */
.table { overflow-x: auto; margin: 14px 0 22px; border: 1px solid var(--line2); border-radius: 12px; }
.table table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th { text-align: left; background: #110e1d; color: #fff; font-weight: 700; padding: 10px 14px; border-bottom: 1px solid var(--line2); white-space: nowrap; }
.table td { padding: 9px 14px; border-bottom: 1px solid var(--line); vertical-align: top; color: #cfc9e6; }
.table tr:last-child td { border-bottom: 0; }
.table td:first-child { white-space: nowrap; }

/* numbered steps (timeline) */
.steps { list-style: none; padding: 0; margin: 20px 0 26px; counter-reset: st; }
.steps > li { position: relative; padding: 0 0 22px 50px; margin: 0; counter-increment: st; }
.steps > li::before { content: counter(st); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; background: var(--grad); color: #fff; font-weight: 800; font-size: 13px; display: grid; place-items: center; box-shadow: var(--glow); }
.steps > li::after { content: ''; position: absolute; left: 14.5px; top: 34px; bottom: 4px; width: 1px; background: var(--line2); }
.steps > li:last-child::after { display: none; }
.steps > li > h4 { margin: 2px 0 6px; font-size: 17px; color: #fff; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; margin: 16px 0 24px; }
.card { display: block; padding: 18px; border-radius: 12px; background: var(--card); border: 1px solid var(--line); text-decoration: none; color: inherit; transition: border-color .15s, transform .15s; }
.card:hover { border-color: rgba(var(--accent-rgb), .55); transform: translateY(-2px); }
.card .ci { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: rgba(var(--accent-rgb), .14); color: var(--accent2); margin-bottom: 10px; font-size: 17px; }
.card b { display: block; color: #fff; font-size: 15px; margin-bottom: 4px; }
.card span { color: var(--muted); font-size: 13px; line-height: 1.55; }

/* badges */
.badge { display: inline-block; font: 700 10.5px "Poppins", sans-serif; padding: 2px 7px; border-radius: 6px; vertical-align: 2px; text-transform: uppercase; letter-spacing: .04em; }
.badge.new { background: rgba(52, 211, 153, .14); color: var(--ok); }
.badge.req { background: rgba(251, 113, 133, .14); color: var(--bad); }
.badge.opt { background: rgba(96, 165, 250, .14); color: var(--info); }

/* hero on the welcome page */
.hero { position: relative; overflow: hidden; border-radius: 18px; border: 1px solid var(--line2); padding: 36px 34px; margin-bottom: 30px;
  background: radial-gradient(600px 300px at 85% 0%, rgba(var(--accent-rgb), .35), transparent 65%), linear-gradient(180deg, #100c1e, #08060f); }
.hero h1 { margin: 0 0 10px; font-size: 40px; font-weight: 900; color: #fff; letter-spacing: -.02em; }
.hero h1 span { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { margin: 0 0 22px; color: #c9c3e0; font-size: 16px; line-height: 1.65; max-width: 620px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; border-radius: 9px; font-weight: 800; font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; text-decoration: none; color: #fff; margin-right: 8px; }
.btn.primary { background: var(--grad); box-shadow: var(--glow); }
.btn.ghost { border: 1px solid var(--line2); background: rgba(255, 255, 255, .03); }
.btn:hover { filter: brightness(1.08); }

/* pager */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 50px; }
.pager a { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px; border-radius: 12px; border: 1px solid var(--line2); background: var(--card); text-decoration: none; color: #fff; font-weight: 700; transition: border-color .15s; }
.pager a small { color: var(--dim); font-weight: 500; font-size: 12px; }
.pager a.next { text-align: right; grid-column: 2; }
.pager a:hover { border-color: rgba(var(--accent-rgb), .6); }
.updated { margin-top: 18px; font-size: 12px; color: var(--dim); }

/* search */
#search { position: fixed; inset: 0; z-index: 60; background: rgba(3, 2, 7, .7); backdrop-filter: blur(6px); display: flex; justify-content: center; padding-top: 10vh; }
.search-panel { width: min(680px, 92vw); max-height: 72vh; display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line2); border-radius: 16px; box-shadow: 0 30px 80px rgba(0, 0, 0, .6); overflow: hidden; }
.search-input { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.search-input input { flex: 1; background: none; border: 0; outline: none; color: #fff; font: 500 16px "Poppins", sans-serif; }
#results { overflow-y: auto; padding: 8px; }
.res { display: block; padding: 10px 12px; border-radius: 10px; text-decoration: none; color: inherit; }
.res b { color: #fff; font-size: 14px; } .res small { display: block; color: var(--dim); font-size: 11.5px; margin-bottom: 2px; text-transform: uppercase; letter-spacing: .05em; font-weight: 700; }
.res span { display: block; color: var(--muted); font-size: 12.5px; margin-top: 3px; }
.res mark { background: rgba(var(--accent-rgb), .35); color: #fff; border-radius: 3px; padding: 0 2px; }
.res.sel, .res:hover { background: rgba(var(--accent-rgb), .14); }
.empty { padding: 24px; text-align: center; color: var(--dim); font-size: 14px; }

@media (max-width: 1200px) { #layout { grid-template-columns: 270px minmax(0, 1fr); } #toc { display: none; } }
@media (max-width: 860px) {
  #layout { grid-template-columns: 1fr; }
  #side { position: fixed; left: 0; top: 64px; width: 290px; z-index: 50; background: var(--bg); transform: translateX(-100%); transition: transform .2s; border-right: 1px solid var(--line2); }
  body.nav-open #side { transform: none; }
  .icon-btn { display: block; }
  .top-links { display: none; }
  .search-box { width: auto; flex: 1; max-width: none; }
  .search-box .ph, .search-box kbd { display: none; }
  #main { padding: 22px 16px 60px; }
  .page-title { font-size: 28px; }
  .pager { grid-template-columns: 1fr; } .pager a.next { grid-column: 1; }
}

/* language selector */
.lang-pick { display: inline-flex; align-items: center; gap: 6px; padding: 0 10px; height: 38px; border-radius: 10px; background: var(--card2);
  border: 1px solid var(--line2); cursor: pointer; flex-shrink: 0; }
.lang-pick:hover { border-color: rgba(var(--accent-rgb), .55); }
.lang-pick select { appearance: none; -webkit-appearance: none; background: transparent; border: 0; color: inherit; font: inherit; font-size: 13.5px;
  cursor: pointer; outline: none; padding-right: 2px; }
.lang-pick select option { background: #14111f; color: #fff; }
@media (max-width: 860px) { .lang-pick { padding: 0 8px; } }