/* =========================================================
       Elenweave Docs — single-file static mock
       Layout: left nav + top search/actions + center doc + prev/next
       Themes: Light / Dark (tokenized)
       ========================================================= */

    :root{
      --bg: #f6f8fb;
      --panel: #ffffff;
      --panel2: #fbfcfe;
      --text: #0e1726;
      --muted: rgba(14, 23, 38, .64);
      --muted2: rgba(14, 23, 38, .42);
      --border: rgba(14, 23, 38, .12);
      --shadow: 0 18px 60px rgba(14, 23, 38, .08);
      --shadow2: 0 10px 30px rgba(14, 23, 38, .08);
      --accent: #1e7aff;
      --accent2: #11b6ff;
      --focus: rgba(30, 122, 255, .18);
      --codeBg: #0b1220;
      --codeText: #e8f0ff;
      --codeBorder: rgba(255,255,255,.12);

      --radius-lg: 18px;
      --radius-md: 14px;
      --radius-sm: 10px;

      --topbar-h: 62px;
      --sidebar-w: 292px;

      --grid: rgba(14, 23, 38, .05);
      --grid2: rgba(14, 23, 38, .025);
    }

    [data-theme="dark"]{
      --bg: #071423;
      --panel: rgba(10, 24, 40, .82);
      --panel2: rgba(10, 24, 40, .62);
      --text: #eaf2ff;
      --muted: rgba(234, 242, 255, .72);
      --muted2: rgba(234, 242, 255, .48);
      --border: rgba(234, 242, 255, .14);
      --shadow: 0 24px 70px rgba(0, 0, 0, .35);
      --shadow2: 0 14px 40px rgba(0, 0, 0, .32);
      --accent: #6fe7ff;
      --accent2: #41ffb4;
      --focus: rgba(111, 231, 255, .18);
      --codeBg: #040a13;
      --codeText: #eaf2ff;
      --codeBorder: rgba(234, 242, 255, .14);

      --grid: rgba(111, 231, 255, .07);
      --grid2: rgba(111, 231, 255, .035);
    }

    *{ box-sizing: border-box; }
    html, body{ height: 100%; }
    body{
      margin: 0;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
      background: var(--bg);
      color: var(--text);
      padding-top: var(--topbar-h);
    }

    /* Subtle grid backdrop (docs-only; not a demo app) */
    .backdrop{
      position: fixed;
      inset: 0;
      pointer-events: none;
      background:
        radial-gradient(80% 70% at 20% 0%, rgba(30, 122, 255, .10), transparent 60%),
        radial-gradient(70% 70% at 80% 10%, rgba(17, 182, 255, .10), transparent 55%),
        radial-gradient(80% 90% at 50% 100%, rgba(0, 0, 0, .08), transparent 55%);
      opacity: .9;
    }
    [data-theme="dark"] .backdrop{
      opacity: .75;
      background:
        radial-gradient(70% 70% at 15% 0%, rgba(111, 231, 255, .10), transparent 58%),
        radial-gradient(60% 70% at 85% 8%, rgba(65, 255, 180, .08), transparent 58%),
        radial-gradient(90% 100% at 50% 105%, rgba(0, 0, 0, .42), transparent 60%);
    }

    /* =========================================================
       Top bar
       ========================================================= */
    .topbar{
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 50;
      height: var(--topbar-h);
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 16px;
      border-bottom: 1px solid var(--border);
      background: linear-gradient(to bottom, rgba(255,255,255,.75), rgba(255,255,255,.55));
      backdrop-filter: blur(10px);
    }
    [data-theme="dark"] .topbar{
      background: linear-gradient(to bottom, rgba(7, 20, 35, .75), rgba(7, 20, 35, .55));
    }
    .brand{
      display: flex;
      align-items: center;
      gap: 10px;
      min-width: calc(var(--sidebar-w) - 12px);
      color: inherit;
      text-decoration: none;
    }
    .logo{
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background: none;
      box-shadow: var(--shadow2);
      border: 1px solid rgba(255,255,255,.28);
      object-fit: cover;
    }
    [data-theme="dark"] .logo{
      border: 1px solid rgba(234, 242, 255, .20);
    }
    .brandText{
      display: flex;
      flex-direction: column;
      line-height: 1.05;
    }
    .brandName{
      font-weight: 760;
      letter-spacing: .2px;
    }
    .brandSub{
      font-size: 12px;
      color: var(--muted);
      margin-top: 2px;
    }

    .searchWrap{
      flex: 1;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .search{
      flex: 1;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 12px;
      border-radius: 14px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,.7);
      box-shadow: 0 10px 30px rgba(0,0,0,.04);
      min-width: 220px;
    }
    [data-theme="dark"] .search{
      background: rgba(10, 24, 40, .55);
      box-shadow: 0 14px 44px rgba(0,0,0,.25);
    }
    .search svg{ opacity: .72; }
    .search input{
      width: 100%;
      border: 0;
      outline: none;
      background: transparent;
      color: var(--text);
      font-size: 14px;
    }
    .search input::placeholder{ color: var(--muted2); }

    .actions{
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn{
      border: 1px solid var(--border);
      background: rgba(255,255,255,.7);
      color: var(--text);
      border-radius: 14px;
      padding: 10px 12px;
      font-size: 13px;
      font-weight: 650;
      letter-spacing: .15px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      user-select: none;
      box-shadow: 0 10px 30px rgba(0,0,0,.04);
    }
    [data-theme="dark"] .btn{
      background: rgba(10, 24, 40, .55);
      box-shadow: 0 14px 44px rgba(0,0,0,.25);
    }
    .btn:hover{ border-color: rgba(30, 122, 255, .35); }
    [data-theme="dark"] .btn:hover{ border-color: rgba(111, 231, 255, .45); }

    .btn.primary{
      border-color: rgba(30, 122, 255, .35);
      background: linear-gradient(135deg, rgba(30,122,255,.16), rgba(17,182,255,.10));
    }
    [data-theme="dark"] .btn.primary{
      border-color: rgba(111, 231, 255, .38);
      background: linear-gradient(135deg, rgba(111,231,255,.16), rgba(65,255,180,.08));
    }

    .kbd{
      font-size: 12px;
      padding: 2px 6px;
      border-radius: 8px;
      border: 1px solid var(--border);
      color: var(--muted);
      background: rgba(255,255,255,.55);
    }
    [data-theme="dark"] .kbd{ background: rgba(10,24,40,.55); }

    /* =========================================================
       Main layout
       ========================================================= */
    .shell{
      display: grid;
      grid-template-columns: var(--sidebar-w) 1fr;
      gap: 18px;
      padding: 18px 16px 28px;
      max-width: 1280px;
      margin: 0 auto;
    }

    /* Sidebar */
    .sidebar{
      position: sticky;
      top: calc(var(--topbar-h) + 18px);
      align-self: start;
      border: 1px solid var(--border);
      background: linear-gradient(to bottom, rgba(255,255,255,.72), rgba(255,255,255,.62));
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    [data-theme="dark"] .sidebar{
      background: linear-gradient(to bottom, rgba(10,24,40,.72), rgba(10,24,40,.60));
    }
    .sideHead{
      padding: 14px 14px 10px;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
    }
    .sideTitle{
      font-size: 12px;
      letter-spacing: .18em;
      text-transform: uppercase;
      color: var(--muted);
      font-weight: 720;
    }
    .sideHint{
      font-size: 12px;
      color: var(--muted2);
      white-space: nowrap;
    }
    .nav{
      padding: 8px 8px 10px;
      max-height: calc(100vh - var(--topbar-h) - 62px);
      overflow: auto;
    }
    .group{
      margin: 6px 0 10px;
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid transparent;
    }
    .groupHeader{
      width: 100%;
      border: 0;
      background: transparent;
      color: var(--text);
      padding: 10px 10px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      cursor: pointer;
      border-radius: 12px;
    }
    .groupHeader:hover{
      background: rgba(30, 122, 255, .06);
    }
    [data-theme="dark"] .groupHeader:hover{
      background: rgba(111, 231, 255, .08);
    }
    .groupLabel{
      font-size: 12px;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--muted);
      font-weight: 760;
    }
    .chev{
      width: 18px; height: 18px;
      opacity: .75;
      transform: rotate(0deg);
      transition: transform .15s ease;
    }
    .group[data-open="false"] .chev{ transform: rotate(-90deg); }

    .items{
      padding: 4px 6px 10px;
      display: grid;
      gap: 4px;
    }
    .group[data-open="false"] .items{ display: none; }

    .navItem{
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 9px 10px;
      border-radius: 12px;
      border: 1px solid transparent;
      cursor: pointer;
      color: var(--text);
      text-decoration: none;
      font-size: 13px;
    }
    .navItem:hover{
      background: rgba(30, 122, 255, .06);
      border-color: rgba(30,122,255,.10);
    }
    [data-theme="dark"] .navItem:hover{
      background: rgba(111, 231, 255, .08);
      border-color: rgba(111,231,255,.14);
    }
    .navItem small{
      color: var(--muted2);
      font-weight: 650;
      letter-spacing: .04em;
    }
    .navItem[data-active="true"]{
      background: linear-gradient(135deg, rgba(30,122,255,.12), rgba(17,182,255,.06));
      border-color: rgba(30,122,255,.22);
      box-shadow: 0 10px 26px rgba(30,122,255,.06);
    }
    [data-theme="dark"] .navItem[data-active="true"]{
      background: linear-gradient(135deg, rgba(111,231,255,.12), rgba(65,255,180,.06));
      border-color: rgba(111,231,255,.28);
      box-shadow: 0 14px 34px rgba(0,0,0,.22);
    }

    /* Content */
    main{
      border: 1px solid var(--border);
      background: linear-gradient(to bottom, rgba(255,255,255,.78), rgba(255,255,255,.62));
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      overflow: hidden;
      min-height: 680px;
    }
    [data-theme="dark"] main{
      background: linear-gradient(to bottom, rgba(10,24,40,.76), rgba(10,24,40,.58));
    }

    .docTop{
      padding: 18px 22px 14px;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 18px;
    }
    .crumb{
      display: inline-flex;
      gap: 8px;
      align-items: center;
      font-size: 12px;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--muted);
      font-weight: 780;
    }
    .pill{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,.55);
      padding: 6px 10px;
      border-radius: 999px;
      font-size: 12px;
      color: var(--muted);
      box-shadow: 0 10px 26px rgba(0,0,0,.03);
    }
    [data-theme="dark"] .pill{
      background: rgba(10,24,40,.52);
      box-shadow: 0 14px 40px rgba(0,0,0,.22);
    }
    .dot{
      width: 8px; height: 8px;
      border-radius: 999px;
      background: var(--accent);
      box-shadow: 0 0 0 6px rgba(30,122,255,.12);
    }
    [data-theme="dark"] .dot{
      box-shadow: 0 0 0 6px rgba(111,231,255,.14);
    }

    .titleBlock h1{
      margin: 12px 0 8px;
      font-size: 34px;
      letter-spacing: -0.02em;
      line-height: 1.08;
    }
    .titleBlock p{
      margin: 0;
      color: var(--muted);
      max-width: 78ch;
      line-height: 1.55;
      font-size: 14px;
    }
    .metaRow{
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 12px;
    }

    .docBody{
      padding: 6px 22px 22px;
    }

    section{
      padding: 18px 0;
      border-bottom: 1px dashed rgba(255,255,255,.0);
    }
    section + section{
      border-top: 1px solid rgba(14,23,38,.06);
    }
    [data-theme="dark"] section + section{
      border-top: 1px solid rgba(234,242,255,.10);
    }

    h2{
      margin: 0 0 8px;
      font-size: 20px;
      letter-spacing: -0.01em;
    }
    h3{
      margin: 16px 0 8px;
      font-size: 15px;
      letter-spacing: -0.01em;
      color: var(--text);
    }
    .lead{
      color: var(--muted);
      margin: 0 0 12px;
      line-height: 1.6;
      font-size: 14px;
    }
    ul{
      margin: 10px 0 0;
      padding-left: 18px;
      color: var(--muted);
      line-height: 1.6;
      font-size: 14px;
    }
    li{ margin: 6px 0; }
    code{
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
      font-size: 12.5px;
    }
    .inlineCode{
      padding: 2px 6px;
      border-radius: 8px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,.55);
      color: var(--text);
    }
    [data-theme="dark"] .inlineCode{
      background: rgba(10,24,40,.55);
    }

    .callout{
      margin-top: 12px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      background: rgba(255,255,255,.55);
      padding: 12px 12px;
      color: var(--muted);
      line-height: 1.55;
      font-size: 13px;
    }
    [data-theme="dark"] .callout{
      background: rgba(10,24,40,.50);
    }
    .callout strong{ color: var(--text); }

    .grid2{
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 12px;
    }
    @media (max-width: 980px){
      .shell{ grid-template-columns: 1fr; }
      .brand{ min-width: auto; }
      .sidebar{ position: relative; top: 0; }
      .grid2{ grid-template-columns: 1fr; }
      :root{ --sidebar-w: 1fr; }
    }

    .card{
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      background: rgba(255,255,255,.55);
      padding: 12px;
    }
    [data-theme="dark"] .card{
      background: rgba(10,24,40,.50);
    }
    .card h4{
      margin: 0 0 6px;
      font-size: 13px;
      letter-spacing: .02em;
    }
    .card p{
      margin: 0;
      color: var(--muted);
      line-height: 1.55;
      font-size: 13px;
    }
    .cardLink{
      color: inherit;
      text-decoration: none;
    }
    .cardLink:hover{
      color: var(--accent);
    }

    /* Code blocks */
    .codeBlock{
      position: relative;
      margin-top: 10px;
      border-radius: 16px;
      border: 1px solid var(--codeBorder);
      background: var(--codeBg);
      color: var(--codeText);
      overflow: hidden;
      box-shadow: 0 18px 60px rgba(0,0,0,.16);
    }
    .codeTop{
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 10px 12px;
      border-bottom: 1px solid rgba(255,255,255,.10);
      background: linear-gradient(to bottom, rgba(255,255,255,.05), rgba(255,255,255,.02));
    }
    .codeLabel{
      font-size: 12px;
      color: rgba(232,240,255,.72);
      letter-spacing: .14em;
      text-transform: uppercase;
      font-weight: 740;
    }
    .copyBtn{
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(255,255,255,.06);
      color: rgba(232,240,255,.92);
      padding: 7px 10px;
      border-radius: 12px;
      font-size: 12px;
      font-weight: 700;
      cursor: pointer;
    }
    .copyBtn:hover{
      border-color: rgba(255,255,255,.28);
      background: rgba(255,255,255,.09);
    }
    pre{
      margin: 0;
      padding: 12px 12px 14px;
      overflow: auto;
      line-height: 1.55;
      font-size: 12.5px;
    }

    /* Footer nav */
    .docNav{
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 14px 22px 16px;
      border-top: 1px solid var(--border);
      background: rgba(255,255,255,.50);
    }
    [data-theme="dark"] .docNav{
      background: rgba(10,24,40,.50);
    }
    .navLink{
      flex: 1;
      border-radius: 16px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,.55);
      padding: 12px 12px;
      cursor: pointer;
      text-decoration: none;
      color: var(--text);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
    }
    [data-theme="dark"] .navLink{
      background: rgba(10,24,40,.55);
    }
    .navLink:hover{
      border-color: rgba(30, 122, 255, .30);
    }
    [data-theme="dark"] .navLink:hover{
      border-color: rgba(111, 231, 255, .36);
    }
    .navDir{
      color: var(--muted2);
      font-weight: 760;
      letter-spacing: .14em;
      text-transform: uppercase;
      font-size: 12px;
    }
    .navTitle{
      font-weight: 760;
      font-size: 13px;
      margin-top: 4px;
    }

    /* Toast */
    .toast{
      position: fixed;
      right: 14px;
      bottom: 14px;
      z-index: 100;
      display: grid;
      gap: 8px;
      pointer-events: none;
    }
    .toastItem{
      pointer-events: none;
      border: 1px solid var(--border);
      background: rgba(255,255,255,.75);
      backdrop-filter: blur(10px);
      border-radius: 16px;
      padding: 10px 12px;
      box-shadow: var(--shadow2);
      min-width: 220px;
    }
    [data-theme="dark"] .toastItem{
      background: rgba(10,24,40,.70);
    }
    .toastItem .t1{
      font-size: 12px;
      letter-spacing: .14em;
      text-transform: uppercase;
      font-weight: 780;
      color: var(--text);
    }
    .toastItem .t2{
      margin-top: 4px;
      font-size: 12px;
      color: var(--muted);
    }

    /* Anchor offset for sticky top bar */
    .anchor{
      scroll-margin-top: calc(var(--topbar-h) + 18px);
    }

    /* Selection highlight */
    mark{
      background: rgba(30,122,255,.18);
      color: inherit;
      padding: 0 .2em;
      border-radius: 6px;
    }
    [data-theme="dark"] mark{
      background: rgba(111,231,255,.18);
    }