/* ============================================================
   DiagMyPCHub — Storage Spaces & SMB File Servers tutorial
   Local stylesheet. Depends on the site design tokens from
   ../../css/style.css (loaded first in <head>). All page styles
   are namespaced with the "ssmb-" prefix so nothing here can leak
   onto other pages.
   ============================================================ */

/* ---------- Reading progress ---------- */
.ssmb-progress{ position:fixed; top:0; left:0; right:0; height:3px; z-index:120; background:transparent; pointer-events:none; }
.ssmb-progress span{ display:block; height:100%; width:0; background:linear-gradient(90deg, var(--blue), var(--cyan-bright)); transition:width 0.1s linear; }

/* ---------- Grid: TOC + article ---------- */
.ssmb-grid{ display:grid; grid-template-columns:1fr; gap:40px; padding-top:clamp(32px,5vw,56px); padding-bottom:clamp(56px,8vw,96px); }

/* TOC panel: sticky sidebar on wide screens, stacked block above the
   article on narrow screens so search + filters stay reachable. */
.ssmb-toc{ order:-1; border:1px solid var(--line); background:var(--surface); border-radius:var(--radius); padding:18px 16px; box-shadow:var(--shadow-1); }
@media (min-width:1100px){
  .ssmb-grid{ grid-template-columns:270px minmax(0,1fr); gap:56px; }
  .ssmb-toc{
    order:0;
    position:sticky;
    top:calc(var(--header-h) + 20px);
    align-self:start;
    max-height:calc(100vh - var(--header-h) - 40px);
    overflow-y:auto;
    padding:20px 18px;
  }
}

/* ---------- TOC title + search ---------- */
.ssmb-toc-title{ font:500 .7rem var(--font-mono); text-transform:uppercase; letter-spacing:.14em; color:var(--ink-3); margin:0 0 12px; }
.ssmb-search-box{ display:flex; align-items:center; gap:8px; background:var(--bg); border:1.5px solid var(--line-2); border-radius:10px; padding:6px 10px; transition:border-color .2s, box-shadow .2s; }
.ssmb-search-box:focus-within{ border-color:var(--blue); box-shadow:0 0 0 4px rgba(15,91,215,.12); }
.ssmb-search-ico{ color:var(--ink-3); flex:none; display:grid; place-items:center; }
.ssmb-search-box input{ flex:1; min-width:0; border:0; background:transparent; font:400 .9rem var(--font-body); color:var(--ink); padding:6px 0; }
.ssmb-search-box input::placeholder{ color:var(--ink-3); }
.ssmb-search-box input:focus{ outline:none; }

/* ---------- Category filter chips ---------- */
.ssmb-filters{ display:flex; flex-wrap:wrap; gap:7px; margin:14px 0 6px; }
.ssmb-chip{ font:500 .72rem var(--font-mono); letter-spacing:.02em; color:var(--ink-2); background:none; border:1px dashed var(--line-2); border-radius:999px; padding:5px 11px; cursor:pointer; transition:background .2s, color .2s, border-color .2s, border-style .2s; }
.ssmb-chip:hover{ border-color:var(--ink); color:var(--ink); }
.ssmb-chip[aria-pressed="true"]{ background:var(--blue); border-style:solid; border-color:var(--blue); color:#fff; font-weight:600; }

/* ---------- TOC list + status ---------- */
.ssmb-toc-status{ min-height:1.3em; margin:12px 0 8px; font-size:.76rem; color:var(--ink-3); font-family:var(--font-mono); }
.ssmb-toc-list{ display:grid; gap:1px; border-left:1px solid var(--line); list-style:none; margin:0; padding:0; }
.ssmb-toc-list li{ margin:0; }
.ssmb-toc-list a{ display:block; padding:6px 12px; margin-left:-1px; border-left:2px solid transparent; color:var(--ink-2); text-decoration:none; font-size:.84rem; line-height:1.4; transition:color .2s, border-color .2s, background .2s; }
.ssmb-toc-list a:hover{ color:var(--ink); background:var(--tint); }
.ssmb-toc-list a[aria-current="true"]{ color:var(--blue); border-left-color:var(--blue); font-weight:500; background:var(--tint); }
.ssmb-toc-list .ssmb-toc-num{ font-family:var(--font-mono); font-size:.72rem; color:var(--line-2); margin-right:6px; }

/* ---------- Empty state ---------- */
.ssmb-empty{ margin-top:14px; padding:16px 14px; background:var(--tint); border-radius:10px; text-align:center; }
.ssmb-empty p{ margin:0 0 12px; font-size:.86rem; color:var(--ink-2); line-height:1.5; }

/* ---------- Article head ---------- */
.ssmb-article{ max-width:820px; }
.ssmb-head h1{ font-size:clamp(1.8rem, 1.2rem + 2.4vw, 2.7rem); font-weight:700; letter-spacing:-.02em; line-height:1.12; margin:0 0 20px; }
.ssmb-intro{ font-size:1.05rem; color:var(--ink-2); line-height:1.7; margin:0 0 16px; }

/* ---------- Sections ---------- */
.ssmb-sec{ margin-top:clamp(48px, 7vw, 72px); scroll-margin-top:calc(var(--header-h) + 16px); }
.ssmb-sec[hidden]{ display:none; }
.ssmb-sec-head{ display:flex; align-items:flex-start; gap:16px; margin-bottom:18px; }
.ssmb-sec-index{ font:600 .95rem var(--font-mono); color:var(--line-2); flex:none; padding-top:4px; }
.ssmb-sec-kicker{ font:500 .7rem var(--font-mono); text-transform:uppercase; letter-spacing:.16em; color:var(--blue); margin:0 0 4px; }
.ssmb-sec-head h2{ font-size:clamp(1.3rem, 1rem + 1.2vw, 1.7rem); font-weight:600; letter-spacing:-.01em; margin:0; }
.ssmb-sec-lede{ color:var(--ink-2); font-size:1rem; line-height:1.7; margin:0 0 18px; max-width:70ch; }

/* ---------- Article body text ---------- */
.ssmb-article p{ color:var(--ink-2); line-height:1.75; margin:0 0 16px; }
.ssmb-article p strong, .ssmb-article p em{ color:var(--ink); }
.ssmb-article a{ color:var(--blue); text-decoration:underline; text-underline-offset:2px; text-decoration-color:var(--blue-soft); transition:text-decoration-color .2s; }
.ssmb-article a:hover{ text-decoration-color:var(--blue); }
.ssmb-article ul, .ssmb-article ol{ margin:0 0 16px; padding-left:22px; color:var(--ink-2); line-height:1.7; list-style:disc; }
.ssmb-article ol{ list-style:decimal; }
.ssmb-article li{ margin-bottom:8px; }
.ssmb-article li::marker{ color:var(--blue); }
.ssmb-article code{ font:500 .84rem var(--font-mono); background:var(--tint); border-radius:4px; padding:2px 6px; color:var(--ink); }
.ssmb-article h3{ font-size:1.12rem; font-weight:600; margin:26px 0 10px; letter-spacing:-.01em; }

/* ---------- Callouts (beginner / exercise / advanced / warning) ---------- */
.ssmb-callout{ display:flex; gap:14px; align-items:flex-start; border-radius:var(--radius); padding:16px 18px; margin:24px 0; border:1px solid var(--line); background:var(--surface); }
.ssmb-callout-ico{ flex:none; width:26px; height:26px; display:grid; place-items:center; border-radius:50%; font:700 .95rem/1 var(--font-display); background:var(--tint); color:var(--blue-deep); }
.ssmb-callout-body{ min-width:0; }
.ssmb-callout-title{ margin:0 0 6px; font-weight:600; font-size:.98rem; color:var(--ink); }
.ssmb-callout-text{ margin:0; font-size:.92rem; color:var(--ink-2); line-height:1.6; }
/* variants — colour is never the only signal: each also carries a title + icon glyph */
.ssmb-beginner{ border-left:3px solid var(--cyan); }
.ssmb-exercise{ border-left:3px solid var(--ok); background:#eefaf4; }
.ssmb-advanced{ border-left:3px solid var(--blue); }
.ssmb-warn{ border-left:3px solid var(--warn); background:#fdf3e6; }
.ssmb-warn .ssmb-callout-ico{ background:var(--warn); color:#3a2a00; }
.ssmb-warn .ssmb-callout-title, .ssmb-warn .ssmb-callout-text{ color:#6b5320; }
.ssmb-exercise .ssmb-callout-ico{ background:var(--ok); color:#06281c; }

/* ---------- Ordered steps ---------- */
.ssmb-steps{ counter-reset:ssmb-step; list-style:none; padding:0; margin:0 0 20px; display:grid; gap:12px; }
.ssmb-steps > li{ counter-increment:ssmb-step; position:relative; padding:0 0 0 46px; margin:0; min-height:40px; line-height:1.7; color:var(--ink-2); }
.ssmb-steps > li::before{ content:counter(ssmb-step, decimal-leading-zero); position:absolute; left:0; top:2px; width:32px; height:32px; display:grid; place-items:center; font:600 .78rem var(--font-mono); color:var(--blue-deep); background:var(--tint); border:1px solid var(--blue-soft); border-radius:9px; }
.ssmb-steps > li strong{ color:var(--ink); }

/* ---------- Code blocks with copy ---------- */
.ssmb-cmd{ display:grid; grid-template-columns:auto 1fr auto; align-items:center; gap:12px; background:var(--surface); border:1px solid var(--line); border-radius:10px; padding:12px 14px; margin:14px 0; }
.ssmb-cmd-label{ font:500 .68rem var(--font-mono); text-transform:uppercase; letter-spacing:.08em; color:var(--ink-3); min-width:96px; flex:none; }
.ssmb-cmd code{ font:500 .84rem/1.6 var(--font-mono); color:var(--ink); background:var(--tint); border-radius:6px; padding:8px 12px; overflow-x:auto; white-space:pre-wrap; word-break:break-word; }
.ssmb-cmd-copy{ font:500 .78rem var(--font-mono); color:var(--blue); background:none; border:1px solid var(--blue-soft); border-radius:7px; padding:6px 12px; cursor:pointer; transition:background .2s, color .2s, border-color .2s; flex:none; white-space:nowrap; }
.ssmb-cmd-copy:hover{ background:var(--blue); color:#fff; border-color:var(--blue); }
.ssmb-cmd-copy.is-done{ background:var(--ok); border-color:var(--ok); color:#06281c; }
.ssmb-cmd-note{ grid-column:1 / -1; margin:4px 0 0; font-size:.8rem; color:var(--ink-3); line-height:1.5; }

/* ---------- Tables ---------- */
.ssmb-table-wrap{ overflow-x:auto; margin:20px 0; border:1px solid var(--line); border-radius:var(--radius); }
.ssmb-table{ width:100%; border-collapse:collapse; font-size:.88rem; min-width:600px; }
.ssmb-table thead th{ font:600 .78rem var(--font-mono); text-transform:uppercase; letter-spacing:.06em; color:var(--ink-3); background:var(--bg); padding:12px 14px; text-align:left; border-bottom:2px solid var(--line); }
.ssmb-table tbody td{ padding:11px 14px; border-bottom:1px solid var(--line); color:var(--ink-2); vertical-align:top; line-height:1.5; }
.ssmb-table tbody tr:last-child td{ border-bottom:0; }
.ssmb-table tbody tr:hover{ background:var(--tint); }
.ssmb-table caption{ padding:0; margin:0; }

/* ---------- SVG diagram ---------- */
.ssmb-diagram{ margin:28px 0; background:var(--dark-2); border:1px solid var(--dark-line); border-radius:14px; padding:clamp(12px,3vw,24px); }
.ssmb-diagram svg{ width:100%; height:auto; display:block; color:#5b7396; }
.ssmb-svg-box{ fill:#0e2038; stroke:#2e5f93; stroke-width:1.5; }
.ssmb-svg-storage{ stroke:var(--cyan-bright); stroke-width:2; }
.ssmb-svg-label{ fill:var(--dark-ink); font:600 12px var(--font-mono); letter-spacing:1.5px; }
.ssmb-svg-sub{ fill:var(--dark-muted); font:400 10px var(--font-mono); letter-spacing:.3px; }
.ssmb-svg-accent{ fill:var(--cyan-bright); font:600 11px var(--font-mono); letter-spacing:.5px; }
.ssmb-svg-trace{ stroke:#24466f; stroke-width:2; fill:none; }
.ssmb-svg-flow{ stroke:var(--cyan-bright); stroke-width:2.4; stroke-dasharray:12 60; animation:ssmb-flow 2.2s linear infinite; }
.ssmb-svg-flow-b{ stroke:var(--blue, #0f5bd7); stroke-width:2.4; stroke-dasharray:12 50; animation:ssmb-flow-b 2.6s linear infinite .4s; }
.ssmb-svg-legend-bg{ fill:#0a1830; stroke:#1d3a5f; stroke-width:1; }
@keyframes ssmb-flow{ to{ stroke-dashoffset:-72; } }
@keyframes ssmb-flow-b{ to{ stroke-dashoffset:-62; } }
@media (prefers-reduced-motion:reduce){
  .ssmb-svg-flow, .ssmb-svg-flow-b{ animation:none; stroke-dasharray:none; opacity:.7; }
}

/* ---------- Image placeholders (hidden until populated) ---------- */
.ssmb-figure{ margin:20px 0 8px; }
.ssmb-figure[data-empty="true"]{ display:none; }
.ssmb-figure img{ width:100%; height:auto; border:1px solid var(--line); border-radius:var(--radius); background:var(--surface); display:block; }
.ssmb-figure figcaption{ margin-top:8px; font:400 .76rem/1.5 var(--font-mono); color:var(--ink-3); }

/* ---------- Expand / collapse (native <details>) ---------- */
.ssmb-details{ border:1px solid var(--line); border-radius:10px; margin:18px 0; background:var(--surface); overflow:hidden; }
.ssmb-details summary{ cursor:pointer; list-style:none; padding:13px 16px; font-weight:600; font-size:.95rem; color:var(--ink); display:flex; align-items:center; gap:10px; transition:background .2s; }
.ssmb-details summary::-webkit-details-marker{ display:none; }
.ssmb-details summary::before{ content:"+"; flex:none; width:20px; height:20px; display:grid; place-items:center; font:600 1rem/1 var(--font-mono); color:var(--blue); border:1px solid var(--blue-soft); border-radius:6px; transition:transform .2s, background .2s, color .2s; }
.ssmb-details[open] summary::before{ content:"–"; background:var(--blue); color:#fff; border-color:var(--blue); }
.ssmb-details summary:hover{ background:var(--tint); }
.ssmb-details-body{ padding:0 16px 16px; border-top:1px solid var(--line); }

/* ---------- Ad placeholder (hidden until populated) ---------- */
.ssmb-ad-wrap{ margin:40px auto 0; max-width:var(--wrap); padding-inline:20px; }
.ssmb-ad-wrap[data-populated="false"]{ display:none; }
.ssmb-ad-slot{ min-height:100px; background:var(--surface); border:1px dashed var(--line-2); border-radius:var(--radius); display:grid; place-items:center; color:var(--ink-3); font:500 .78rem var(--font-mono); }

/* ---------- Glossary / end note ---------- */
.ssmb-glossary{ margin:20px 0; }
.ssmb-glossary dt{ font:600 .95rem var(--font-display); color:var(--ink); margin-top:16px; }
.ssmb-glossary dt:first-child{ margin-top:0; }
.ssmb-glossary dd{ margin:4px 0 0 0; font-size:.92rem; color:var(--ink-2); line-height:1.6; padding-left:14px; border-left:2px solid var(--line); }
.ssmb-end-note{ margin-top:32px; padding:16px 20px; background:var(--tint); border-radius:var(--radius); font-size:.92rem; color:var(--ink-2); border-left:3px solid var(--cyan); }

/* ---------- Toast ---------- */
#ssmb-toast{ position:fixed; bottom:24px; left:50%; transform:translateX(-50%) translateY(80px); background:var(--ink); color:var(--bg); padding:10px 20px; border-radius:8px; font-size:.86rem; opacity:0; transition:opacity .3s, transform .3s; z-index:200; pointer-events:none; }
#ssmb-toast.is-visible{ opacity:1; transform:translateX(-50%) translateY(0); }

/* ---------- Back to top ---------- */
#ssmb-backtop{ position:fixed; bottom:24px; right:24px; width:42px; height:42px; display:grid; place-items:center; background:var(--surface); border:1px solid var(--line-2); border-radius:10px; color:var(--ink-2); cursor:pointer; opacity:0; transform:translateY(10px); transition:opacity .3s, transform .3s, border-color .2s, color .2s; z-index:90; }
#ssmb-backtop.is-visible{ opacity:1; transform:none; }
#ssmb-backtop:hover{ border-color:var(--blue); color:var(--blue); }

/* ---------- Dark theme overrides (hardcoded colours only) ---------- */
[data-theme="dark"] .ssmb-toc{ background:var(--surface); border-color:var(--line); }
[data-theme="dark"] .ssmb-search-box{ background:var(--bg); border-color:var(--line-2); }
[data-theme="dark"] .ssmb-chip[aria-pressed="true"]{ background:#2563e8; border-color:#2563e8; }
[data-theme="dark"] .ssmb-exercise{ background:#0f2a1f; }
[data-theme="dark"] .ssmb-warn{ background:#2a2010; border-left-color:var(--warn); }
[data-theme="dark"] .ssmb-warn .ssmb-callout-title, [data-theme="dark"] .ssmb-warn .ssmb-callout-text{ color:#e8d5a0; }
[data-theme="dark"] .ssmb-cmd{ background:var(--dark-2); border-color:var(--dark-line); }
[data-theme="dark"] .ssmb-cmd code{ background:rgba(255,255,255,.04); color:var(--dark-ink); }
[data-theme="dark"] .ssmb-table thead th{ background:var(--dark-2); color:var(--dark-muted); border-bottom-color:var(--dark-line); }
[data-theme="dark"] .ssmb-table tbody td{ color:var(--dark-ink); border-bottom-color:var(--dark-line); }
[data-theme="dark"] .ssmb-table tbody tr:hover{ background:rgba(255,255,255,.03); }
[data-theme="dark"] .ssmb-details{ background:var(--surface); border-color:var(--line); }
[data-theme="dark"] .ssmb-details summary:hover{ background:var(--tint); }
[data-theme="dark"] .ssmb-end-note{ background:var(--tint); color:var(--ink-2); border-left-color:var(--cyan); }
[data-theme="dark"] .ssmb-ad-slot{ background:var(--surface); border-color:var(--line-2); color:var(--ink-3); }
[data-theme="dark"] #ssmb-backtop{ background:var(--surface); border-color:var(--line-2); color:var(--ink-2); }

/* ---------- Print ---------- */
@media print{
  .ssmb-progress, .ssmb-toc, .ssmb-cmd-copy, #ssmb-backtop, .site-header, .topbar, .nav-toggle, .theme-toggle, .nav-cta{ display:none !important; }
  .ssmb-grid{ grid-template-columns:1fr; gap:0; padding:0; }
  .ssmb-article{ max-width:100%; }
  .ssmb-sec{ margin-top:32px; page-break-inside:avoid; }
  .ssmb-diagram{ background:#fff; border-color:#ccc; }
  body{ background:#fff; color:#000; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  .ssmb-progress span{ transition:none; }
  .ssmb-toc-list a{ transition:none; }
  .ssmb-cmd-copy{ transition:none; }
  #ssmb-backtop{ transition:none; }
}