/* ============================================================
   DiagMyPCHub — Active Directory: Install & First Domain
   Local stylesheet. Depends on the site design tokens from
   ../../css/style.css (loaded first in <head>). All article
   styles are namespaced with the "ad-" prefix.
   ============================================================ */

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

/* ---------- Grid: TOC + article ---------- */
.ad-grid{ display:grid; grid-template-columns:1fr; gap:40px; padding-top:clamp(32px,5vw,56px); padding-bottom:clamp(56px,8vw,96px); }
.ad-toc{ display:none; }
.ad-toc-title{ font:500 .7rem var(--font-mono); text-transform:uppercase; letter-spacing:.14em; color:var(--ink-3); margin:0 0 12px; }
.ad-toc ul{ display:grid; gap:1px; border-left:1px solid var(--line); }
.ad-toc a{ display:block; padding:6px 14px; margin-left:-1px; border-left:2px solid transparent; color:var(--ink-2); text-decoration:none; font-size:.85rem; transition:color .2s, border-color .2s; }
.ad-toc a:hover{ color:var(--ink); }
.ad-toc a[aria-current="true"]{ color:var(--blue); border-left-color:var(--blue); font-weight:500; }

/* ---------- Article head ---------- */
.ad-article{ max-width:820px; }
.ad-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; }
.ad-intro{ font-size:1.05rem; color:var(--ink-2); line-height:1.7; margin:0 0 16px; }

/* ---------- Callouts ---------- */
.ad-callout{ border-left:3px solid var(--blue); background:var(--tint); border-radius:0 var(--radius) var(--radius) 0; padding:14px 18px; margin:24px 0; font-size:.95rem; color:var(--ink-2); }
.ad-callout p{ margin:0; }
.ad-callout strong{ color:var(--ink); }
.ad-callout.ad-warn{ border-left-color:var(--warn); background:#fdf3e6; }
.ad-callout.ad-warn p{ color:#6b5320; }

/* ---------- Static image placeholder (per-section) ----------
   Convention: <figure class="ad-img"><img data-src=""><div class="ad-ph">…</div></figure>
   - no data-src  → img hidden, placeholder shown
   - src loads    → img shown, placeholder hidden
   - src fails    → same as no src (graceful fallback, no broken icon) */
.ad-img{ margin:24px 0; }
.ad-img img{ width:100%; height:auto; display:block; border:1px solid var(--line); border-radius:var(--radius); background:var(--surface); }
.ad-img img.is-hidden{ display:none; }
.ad-ph{ aspect-ratio:16 / 9; display:flex; flex-direction:column; justify-content:center; gap:8px; padding:clamp(16px, 3vw, 28px); background:var(--surface); border:1.5px dashed var(--line-2); border-radius:var(--radius); }
.ad-ph.is-hidden{ display:none; }
.ad-ph-chip{ align-self:flex-start; font:500 .62rem var(--font-mono); text-transform:uppercase; letter-spacing:.1em; color:var(--blue-deep); background:var(--tint); border:1px solid var(--blue-soft); border-radius:999px; padding:4px 10px; }
.ad-ph-title{ font:600 .95rem var(--font-display); color:var(--ink); margin:0; }
.ad-ph-desc{ font-size:.83rem; color:var(--ink-3); margin:0; line-height:1.5; max-width:60ch; }

/* ---------- Hero figure (optional, self-hiding) ---------- */
.ad-figure{ margin:0 0 8px; }
.ad-figure img{ width:100%; height:auto; border:1px solid var(--line); border-radius:var(--radius); background:var(--surface); display:block; }
.ad-figure figcaption{ margin-top:10px; font:400 .78rem var(--font-mono); color:var(--ink-3); }
.ad-figure[data-empty="true"]{ display:none; }

/* ---------- Sections ---------- */
.ad-sec{ margin-top:clamp(48px, 7vw, 72px); scroll-margin-top:calc(var(--header-h) + 16px); }
.ad-sec-head{ display:flex; align-items:flex-start; gap:16px; margin-bottom:18px; }
.ad-sec-index{ font:600 .95rem var(--font-mono); color:var(--line-2); flex:none; padding-top:4px; }
.ad-sec-kicker{ font:500 .7rem var(--font-mono); text-transform:uppercase; letter-spacing:.16em; color:var(--blue); margin:0 0 4px; }
.ad-sec-head h2{ font-size:clamp(1.3rem, 1rem + 1.2vw, 1.7rem); font-weight:600; letter-spacing:-.01em; margin:0; }
.ad-article p{ color:var(--ink-2); line-height:1.75; margin:0 0 16px; }
.ad-article p strong, .ad-article p em{ color:var(--ink); }
.ad-article a{ color:var(--blue); text-decoration:underline; text-underline-offset:2px; text-decoration-color:var(--blue-soft); transition:text-decoration-color .2s; }
.ad-article a:hover{ text-decoration-color:var(--blue); }
.mono{ font-family:var(--font-mono); font-size:.92em; }

/* ---------- Copyable code blocks ---------- */
.ad-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; }
.ad-cmd-label{ font:500 .68rem var(--font-mono); text-transform:uppercase; letter-spacing:.08em; color:var(--ink-3); min-width:88px; }
.ad-cmd code{ font:500 .85rem/1.6 var(--font-mono); color:var(--ink); background:var(--tint); border-radius:6px; padding:8px 12px; overflow-x:auto; white-space:pre; }
.ad-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; flex:none; }
.ad-cmd-copy:hover{ background:var(--blue); color:#fff; border-color:var(--blue); }
.ad-cmd-copy.is-done{ background:var(--ok); border-color:var(--ok); color:#06281c; }
.ad-cmd-note{ grid-column:1 / -1; margin:2px 0 0; font-size:.8rem; color:var(--ink-3); }

/* ---------- Animated SVG diagram ---------- */
.ad-diagram{ margin:32px 0; background:var(--dark-2); border:1px solid var(--dark-line); border-radius:14px; padding:clamp(8px, 2vw, 18px); }
.ad-diagram svg{ width:100%; height:auto; display:block; }
.ad-glow{ animation:adGlow 7s ease-in-out infinite alternate; transform-box:fill-box; transform-origin:center; }
@keyframes adGlow{ from{ opacity:.6; } to{ opacity:1; transform:scale(1.04); } }
.ad-box{ fill:#0e2038; stroke:#2e5f93; stroke-width:1.5; }
.ad-box.ad-dashed{ stroke-dasharray:6 6; opacity:.75; }
.ad-chip{ fill:#12314f; stroke:#24466f; stroke-width:1.5; }
.ad-trace{ stroke:#24466f; stroke-width:2; stroke-dasharray:6 10; animation:adFlow 1.8s linear infinite; }
.ad-trace.ad-rep{ stroke:#f0b429; opacity:.7; animation-duration:2.6s; }
@keyframes adFlow{ to{ stroke-dashoffset:-32; } }
.ad-led{ fill:var(--ok); transform-box:fill-box; transform-origin:center; animation:adLed 3s ease-in-out infinite; }
@keyframes adLed{ 50%{ transform:scale(1.35); opacity:.7; } }
.ad-label{ fill:#8aa3c4; font:600 12px var(--font-mono); letter-spacing:1.5px; }
.ad-sub{ fill:#5b7396; font:500 10px var(--font-mono); letter-spacing:.5px; }
.ad-stable{ fill:#8aa3c4; font:600 11px var(--font-mono); letter-spacing:2px; }
.ad-forest{ fill:#5b7396; font:500 12px var(--font-mono); letter-spacing:1px; }

/* ---------- Troubleshooting matrix & filter ---------- */
.ad-matrix-filters{ display:flex; flex-wrap:wrap; gap:8px; margin:8px 0 12px; }
.ad-matrix-btn{ font:500 .82rem var(--font-mono); color:var(--ink-2); background:var(--surface); border:1px solid var(--line-2); border-radius:999px; padding:9px 16px; cursor:pointer; transition:border-color .2s, color .2s, background .2s; }
.ad-matrix-btn:hover{ border-color:var(--blue); color:var(--blue); }
.ad-matrix-btn[aria-pressed="true"]{ background:var(--blue); border-color:var(--blue); color:#fff; }
.ad-matrix-count{ font:500 .78rem var(--font-mono); color:var(--ink-3); margin:0 0 12px; min-height:1.2em; }
.ad-matrix tr.is-hidden{ display:none; }
.mono-cell{ font-size:.82rem; }
.mono-cell .mono{ white-space:normal; }
.ad-matrix-empty{ font-size:.9rem; color:var(--ink-2); margin:0; }
.ad-linklike{ font:inherit; font-size:.9rem; color:var(--blue); background:none; border:0; padding:0; cursor:pointer; text-decoration:underline; text-underline-offset:2px; }

/* ---------- Final validation checklist ---------- */
.ad-check{ background:var(--surface); color:var(--ink); border:1px solid var(--line); border-radius:14px; padding:20px; margin:20px 0; }
.ad-check-file{ display:flex; justify-content:space-between; font-size:.72rem; color:var(--ink-3); border-bottom:1px dashed var(--line-2); padding-bottom:12px; margin:0 0 12px; }
.ad-check-list{ list-style:none; padding:0; margin:0; }
.ad-check-list li{ margin:0; }
.ad-check-list label{ display:flex; align-items:flex-start; gap:12px; padding:10px 8px; border-radius:8px; cursor:pointer; transition:background .15s; font-size:.93rem; color:var(--ink-2); }
.ad-check-list label:hover{ background:#f2f7ff; }
.ad-check-box{ width:18px; height:18px; margin:2px 0 0; accent-color:var(--blue); flex:none; cursor:pointer; }
.ad-check-box:checked + span{ color:var(--ink); }
.ad-check-actions{ display:flex; align-items:center; flex-wrap:wrap; gap:12px; margin-top:16px; padding-top:16px; border-top:1px solid var(--line); }
.ad-check-hint{ font-size:.7rem; color:var(--ink-3); margin:0; }

/* ---------- Related cards ---------- */
.ad-related{ display:grid; grid-template-columns:1fr; gap:14px; margin-top:8px; }
.ad-related-card{ display:flex; flex-direction:column; gap:6px; padding:18px; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); text-decoration:none; color:var(--ink); transition:border-color .2s, transform .2s, box-shadow .2s; }
.ad-related-card:hover, .ad-related-card:focus-visible{ border-color:var(--blue); transform:translateY(-3px); box-shadow:var(--shadow-1); }
.ad-related-title{ font-size:1.02rem; font-weight:600; margin:0; }
.ad-related-sub{ font-size:.86rem; color:var(--ink-2); margin:0; }

/* ---------- Article footer ---------- */
.ad-foot{ margin-top:48px; padding-top:20px; border-top:1px solid var(--line); }
.ad-foot p{ font-size:.85rem; color:var(--ink-3); margin:0; }

/* ---------- Ad slot (self-contained; hides when empty) ---------- */
.ad-wrap{ margin:clamp(40px, 6vw, 64px) 0; }
.ad-slot{ display:none; }
.ad-slot:not(:empty){ display:flex; align-items:center; justify-content:center; position:relative; max-width:720px; min-height:250px; margin-inline:auto; border:1px dashed var(--line-2); background:var(--surface); border-radius:var(--radius); overflow:hidden; }
.ad-slot:not(:empty)::before{ content:"Advertisement"; position:absolute; top:8px; right:12px; font:500 .62rem var(--font-mono); text-transform:uppercase; letter-spacing:.1em; color:var(--ink-3); }
.ad-slot:not(:empty) *{ max-width:100%; }

/* ---------- Responsive ---------- */
@media (min-width:560px){
  .ad-related{ grid-template-columns:1fr 1fr; }
}
@media (min-width:1000px){
  .ad-grid{ grid-template-columns:230px minmax(0,1fr); gap:56px; }
  .ad-toc{ display:block; position:sticky; top:calc(var(--header-h) + 24px); align-self:start; max-height:calc(100vh - var(--header-h) - 48px); overflow:auto; }
}
@media (max-width:559px){
  .ad-cmd{ grid-template-columns:1fr; }
  .ad-cmd-label{ min-width:0; }
  .ad-matrix-filters{ gap:6px; }
  .ad-matrix-btn{ padding:8px 12px; font-size:.76rem; }
  .ad-related{ grid-template-columns:1fr; }
}

/* ---------- Dark theme ---------- */
[data-theme="dark"] .ad-ph{ border-color:var(--dark-line); }
[data-theme="dark"] .ad-ph-chip{ color:var(--blue); background:var(--tint); border-color:var(--blue-soft); }
[data-theme="dark"] .ad-cmd code{ background:var(--tint); }
[data-theme="dark"] .ad-check-list label:hover{ background:var(--tint); }
[data-theme="dark"] .ad-callout.ad-warn{ background:#241a09; }
[data-theme="dark"] .ad-callout.ad-warn p{ color:#d8b878; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  .ad-progress{ display:none; }
  .ad-glow, .ad-trace, .ad-led{ animation:none !important; }
  .ad-trace{ stroke-dasharray:none; opacity:.6; }
}

/* ---------- Print ---------- */
@media print{
  .ad-progress, .ad-toc, .to-top, .site-header, .topbar, .ad-diagram, .ad-wrap, .ad-matrix-filters, .ad-check-actions, .site-footer, .consent{ display:none !important; }
  .ad-grid{ display:block; padding:0; }
  .ad-article{ max-width:100%; }
  a{ color:var(--ink); text-decoration:none; }
  .ad-sec{ page-break-inside:avoid; }
  .ad-ph{ border-style:solid; }
}