/* ============================================================
   DiagMyPCHub — tutorial: Windows troubleshooting
   Scoped to .win-* only. The existing design system
   (css/style.css) is reused; dark theme via
   [data-theme="dark"] overrides near the end of this file.
   ============================================================ */

html { scroll-behavior: smooth; }

/* ---------- Reading progress ---------- */
.win-progress { position: fixed; top: 0; left: 0; z-index: 120; width: 100%; height: 3px; background: transparent; pointer-events: none; }
.win-progress span { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, var(--blue), var(--cyan)); transform-origin: 0 50%; transform: scaleX(0); }

/* ---------- Layout: TOC + article ---------- */
.win-grid { display: grid; grid-template-columns: 1fr; gap: 36px; padding: 34px 0 20px; }
.win-toc { display: none; }
.win-toc-title { font: 500 0.7rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-3); margin: 0 0 12px; }
.win-toc ul { border-left: 1px solid var(--line); }
.win-toc a { display: block; padding: 6px 0 6px 16px; margin-left: -1px; border-left: 2px solid transparent; color: var(--ink-2); text-decoration: none; font-size: 0.85rem; transition: color 0.2s, border-color 0.2s; }
.win-toc a:hover { color: var(--ink); }
.win-toc a.is-active { color: var(--blue); border-left-color: var(--blue); font-weight: 600; }

/* ---------- Article head ---------- */
.win-head h1 { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 2.7rem); font-weight: 700; letter-spacing: -0.02em; margin: 0 0 16px; }
.win-intro { color: var(--ink-2); font-size: 1.02rem; }
.win-intro code { font: 500 0.86em var(--font-mono); background: var(--tint); border: 1px solid var(--blue-soft); border-radius: 6px; padding: 1px 6px; color: var(--blue-deep); }

/* ---------- Callouts ---------- */
.win-warn { display: flex; gap: 14px; align-items: flex-start; margin: 22px 0; padding: 18px 20px; background: #fdf6e9; border: 1px solid #ecd9ad; border-left: 4px solid var(--warn); border-radius: var(--radius); }
.win-warn-ico { flex: none; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: var(--warn); color: #3a2a00; font: 700 0.95rem/1 var(--font-display); }
.win-warn-title { font: 600 0.98rem var(--font-body); color: var(--ink); margin: 0 0 6px; }
.win-warn-title a { color: var(--blue-deep); }
.win-warn-text { margin: 0; font-size: 0.9rem; color: var(--ink-2); }

.win-callout { border: 1px solid var(--line-2); border-left: 4px solid var(--blue); background: var(--tint); border-radius: var(--radius); padding: 14px 18px; margin: 18px 0; font-size: 0.92rem; color: var(--ink-2); }
.win-callout strong { color: var(--ink); }
.win-callout code { font: 500 0.86em var(--font-mono); }
.win-tip { border-left-color: var(--ok); background: rgba(47, 191, 143, 0.08); }
.win-note { border-left-color: var(--ink-3); background: var(--bg); }

/* ---------- Image placeholder (auto-hides when empty) ---------- */
.win-figure { margin: 26px 0 6px; border: 1px dashed var(--line-2); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.win-figure[data-empty="true"] { display: none; }
.win-figure img { display: block; width: 100%; height: auto; }
.win-figure figcaption { padding: 10px 14px; font: 400 0.72rem/1.6 var(--font-mono); color: var(--ink-3); border-top: 1px dashed var(--line-2); }

/* ---------- Sections ---------- */
.win-sec { margin-top: 46px; scroll-margin-top: 84px; }
.win-sec-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 10px; }
.win-sec-index { font: 600 0.95rem var(--font-mono); color: var(--line-2); letter-spacing: 0.06em; flex: none; }
.win-sec-kicker { font: 500 0.7rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.14em; color: var(--blue); margin: 0 0 4px; }
.win-sec-head h2 { font-size: clamp(1.3rem, 1rem + 1.2vw, 1.7rem); font-weight: 600; letter-spacing: -0.01em; margin: 0; }
.win-sec h3 { font-size: 1.08rem; font-weight: 600; margin: 26px 0 8px; color: var(--ink); }
.win-sec-lede { color: var(--ink-2); font-size: 0.96rem; margin: 0 0 18px; max-width: 82ch; }
.win-sec p { color: var(--ink-2); font-size: 0.96rem; }
.win-sec code { font: 500 0.86em var(--font-mono); background: var(--tint); border: 1px solid var(--blue-soft); border-radius: 6px; padding: 1px 6px; color: var(--blue-deep); }
.win-sec a { color: var(--blue); text-decoration: none; }
.win-sec a:hover { text-decoration: underline; }
.win-sec ul, .win-sec ol { color: var(--ink-2); font-size: 0.95rem; padding-left: 22px; margin: 0 0 16px; }
.win-sec li { margin: 6px 0; }
.win-sec li strong { color: var(--ink); }
.win-steps { counter-reset: step; list-style: none; padding: 0; margin: 0 0 18px; }
.win-steps li { counter-increment: step; position: relative; padding: 12px 0 12px 46px; border-bottom: 1px solid var(--line); }
.win-steps li:last-child { border-bottom: 0; }
.win-steps li::before { content: counter(step); position: absolute; left: 0; top: 11px; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 9px; background: var(--tint); color: var(--blue-deep); font: 600 0.82rem var(--font-mono); border: 1px solid var(--blue-soft); }

/* ---------- Diagnostic selector ---------- */
.win-diag { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.win-diag-opts { display: grid; grid-template-columns: 1fr; gap: 8px; }
.win-diag-btn { display: flex; align-items: center; justify-content: center; text-align: center; font: 600 0.88rem var(--font-body); padding: 11px 14px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--bg); color: var(--ink-2); cursor: pointer; transition: border-color 0.2s, color 0.2s, background 0.2s, transform 0.15s; }
.win-diag-btn:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-1px); }
.win-diag-btn[aria-pressed="true"] { background: var(--blue); border-color: var(--blue); color: #fff; }
.win-diag-hint { margin: 14px 0 0; font: 500 0.78rem var(--font-mono); color: var(--ink-3); min-height: 1.2em; }
.win-diag-result { margin-top: 14px; }
.win-diag-path { border-top: 1px dashed var(--line-2); padding-top: 14px; }
.win-diag-path p { font-size: 0.92rem; color: var(--ink-2); margin: 0 0 10px; }
.win-diag-path p:last-child { margin-bottom: 0; }
.win-diag-links { font-size: 0.88rem; }
.win-diag-links a { color: var(--blue); text-decoration: none; }
.win-diag-links a:hover { text-decoration: underline; }
.win-noscript { margin: 14px 0 0; font-size: 0.85rem; color: var(--ink-2); }

/* ---------- Verdict ---------- */
.win-verdict { margin: 18px 0 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; transition: border-color 0.25s, box-shadow 0.25s; }
.win-verdict.is-fixed { border-color: var(--ok); box-shadow: 0 0 0 4px rgba(47, 191, 143, 0.15); }
.win-verdict.is-notfix { border-color: var(--warn); box-shadow: 0 0 0 4px rgba(245, 180, 83, 0.15); }
.win-verdict-label { font: 600 0.95rem var(--font-display); margin: 0 0 10px; color: var(--ink); }
.win-verdict-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.win-vbtn { font: 600 0.82rem var(--font-body); padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line-2); background: var(--surface); color: var(--ink-2); cursor: pointer; transition: border-color 0.2s, color 0.2s, background 0.2s, transform 0.15s; }
.win-vbtn:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-1px); }
.win-vbtn-yes { color: #06281c; background: var(--ok); border-color: var(--ok); }
.win-vbtn-yes:hover { color: #06281c; background: var(--ok); border-color: var(--ok); }
.win-verdict-msg { min-height: 1.4em; margin: 10px 0 0; font-size: 0.85rem; color: var(--ink-2); }

/* ---------- Diagram SVG ---------- */
.win-diagram { margin: 26px 0 6px; background: var(--dark-2); border: 1px solid var(--dark-line); border-radius: 14px; padding: 10px; }
.win-diagram svg { display: block; width: 100%; height: auto; }
.win-diagram figcaption { padding: 12px 10px 6px; font-size: 0.8rem; color: var(--dark-muted); }
.win-box { fill: #0e2038; stroke: #2e5f93; stroke-width: 2; }
.win-pane { fill: #122a48; stroke: #3f7fbf; stroke-width: 1.5; }
.win-trace { stroke: #24466f; stroke-width: 2; fill: none; }
.win-flow { stroke: var(--cyan-bright); stroke-width: 2.4; fill: none; stroke-dasharray: 12 240; opacity: 0.9; animation: winflow 3.8s linear infinite; }
.win-flow-b { animation-duration: 4.8s; animation-direction: reverse; }
@keyframes winflow { to { stroke-dashoffset: -252; } }
.win-via { fill: #24466f; }
.win-glow { animation: winglow 7s ease-in-out infinite alternate; transform-box: fill-box; transform-origin: center; }
@keyframes winglow { from { opacity: 0.55; } to { opacity: 1; transform: scale(1.04); } }
.win-recovery { stroke: var(--ok); stroke-width: 2; fill: none; stroke-dasharray: 6 10; opacity: 0.7; animation: winrecover 12s linear infinite; }
@keyframes winrecover { to { stroke-dashoffset: -200; } }
.win-node-ping { fill: none; stroke: var(--cyan-bright); stroke-width: 1.5; opacity: 0; transform-box: fill-box; transform-origin: center; animation: winping 3.6s ease-out infinite; }
@keyframes winping { 0% { transform: scale(0.6); opacity: 0.7; } 70% { transform: scale(1.9); opacity: 0; } 100% { opacity: 0; } }
.win-svg-label { fill: #8aa3c4; font: 600 12px var(--font-mono); letter-spacing: 3px; }
.win-svg-sub { fill: #5b7396; font: 500 10px var(--font-mono); letter-spacing: 1px; }
.win-svg-status { fill: #5b7396; font: 500 12px var(--font-mono); letter-spacing: 1px; }

/* ---------- Accordions ---------- */
.win-art { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); margin: 14px 0; overflow: hidden; transition: border-color 0.2s; }
.win-art[open] { border-color: var(--line-2); }
.win-art-sum { display: flex; align-items: center; gap: 14px; padding: 16px 18px; cursor: pointer; list-style: none; }
.win-art-sum::-webkit-details-marker { display: none; }
.win-art-num { flex: none; width: 34px; height: 34px; display: grid; place-items: center; font-size: 0.76rem; color: var(--ink-3); background: var(--bg); border: 1px solid var(--line-2); border-radius: 9px; transition: background 0.2s, color 0.2s, border-color 0.2s; }
.win-art[open] .win-art-num { background: var(--blue); border-color: var(--blue); color: #fff; }
.win-art-body { display: grid; gap: 2px; min-width: 0; flex: 1; }
.win-art-title { font: 600 1.02rem var(--font-display); color: var(--ink); }
.win-art-meta { display: flex; align-items: center; gap: 8px; }
.win-art-time { font-size: 0.7rem; color: var(--ink-3); }
.win-art-ico { position: relative; width: 16px; height: 16px; flex: none; margin-left: auto; }
.win-art-ico::before, .win-art-ico::after { content: ""; position: absolute; left: 0; top: 7px; width: 16px; height: 2px; background: var(--ink-3); transition: transform 0.25s, background 0.25s; }
.win-art-ico::after { transform: rotate(90deg); }
.win-art[open] .win-art-ico::after { transform: rotate(0); }
.win-art[open] .win-art-ico::before, .win-art[open] .win-art-ico::after { background: var(--blue); }
.win-art-panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.35s ease; }
.win-art[open] .win-art-panel { grid-template-rows: 1fr; }
.win-art-inner { overflow: hidden; min-height: 0; visibility: hidden; transition: visibility 0s 0.35s; padding: 0 18px 20px; }
.win-art[open] .win-art-inner { visibility: visible; transition-delay: 0s; }
.win-art-inner p { color: var(--ink-2); font-size: 0.95rem; }
.win-art-inner p:last-child { margin-bottom: 0; }
.win-art-inner a { color: var(--blue); text-decoration: none; }
.win-art-inner a:hover { text-decoration: underline; }

/* ---------- Copyable command ---------- */
.win-cmd { margin: 14px 0; border: 1px solid var(--line-2); border-radius: 10px; overflow: hidden; }
.win-cmd-label { display: block; padding: 8px 14px; background: var(--tint); font: 600 0.68rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--blue-deep); }
.win-cmd code { display: block; font: 500 0.85rem/1.5 var(--font-mono); padding: 12px 14px; background: var(--bg); color: var(--ink); overflow-x: auto; white-space: pre; -webkit-overflow-scrolling: touch; }
.win-cmd-copy { display: block; width: 100%; text-align: left; background: var(--tint); color: var(--blue-deep); border: 0; border-top: 1px solid var(--line-2); padding: 9px 14px; font: 600 0.76rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; cursor: pointer; }
.win-cmd-copy:hover { color: var(--blue); }
.win-cmd-note { display: block; padding: 9px 14px; font-size: 0.74rem; color: var(--ink-3); }
.win-cmd-note code { font: 500 0.95em var(--font-mono); color: var(--ink-2); }

/* ---------- Risk chips ---------- */
.win-risk { display: inline-block; font: 600 0.7rem var(--font-mono); padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.win-risk-safe { color: #0a5c42; background: rgba(47, 191, 143, 0.16); border: 1px solid rgba(47, 191, 143, 0.5); }
.win-risk-low { color: #7a4b00; background: rgba(245, 180, 83, 0.16); border: 1px solid rgba(245, 180, 83, 0.55); }
.win-risk-caution { color: #8a4a00; background: rgba(224, 142, 60, 0.16); border: 1px solid rgba(224, 142, 60, 0.55); }
.win-risk-destructive { color: #8f1d1d; background: rgba(200, 60, 60, 0.14); border: 1px solid rgba(200, 60, 60, 0.5); }

/* ---------- Checklist ---------- */
.win-check { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.win-check-file { display: flex; justify-content: space-between; font-size: 0.72rem; color: var(--ink-3); border-bottom: 1px dashed var(--line-2); padding-bottom: 12px; margin: 0 0 12px; }
.win-check-list li label { display: flex; gap: 12px; padding: 10px 8px; border-radius: 8px; cursor: pointer; transition: background 0.15s; font-size: 0.93rem; color: var(--ink-2); }
.win-check-list li label:hover { background: var(--tint); }
.win-check-list li label strong { color: var(--ink); font-weight: 600; }
.win-check-list li label code { font: 500 0.86em var(--font-mono); }
.win-check-box { width: 18px; height: 18px; margin: 2px 0 0; flex: none; accent-color: var(--blue); cursor: pointer; }
.win-check-box:checked + span { color: var(--ink); }
.win-check-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.win-check-hint { font-size: 0.7rem; color: var(--ink-3); margin: 0; }

/* ---------- FAQ ---------- */
.win-faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); margin: 12px 0; overflow: hidden; transition: border-color 0.2s; }
.win-faq-item[open] { border-color: var(--line-2); }
.win-faq-sum { display: flex; align-items: center; gap: 12px; padding: 16px 18px; cursor: pointer; list-style: none; font: 600 0.98rem var(--font-display); color: var(--ink); }
.win-faq-sum::-webkit-details-marker { display: none; }
.win-faq-ico { margin-left: auto; position: relative; width: 16px; height: 16px; flex: none; }
.win-faq-ico::before, .win-faq-ico::after { content: ""; position: absolute; left: 0; top: 7px; width: 16px; height: 2px; background: var(--ink-3); transition: transform 0.25s, background 0.25s; }
.win-faq-ico::after { transform: rotate(90deg); }
.win-faq-item[open] .win-faq-ico::after { transform: rotate(0); }
.win-faq-item[open] .win-faq-ico::before, .win-faq-item[open] .win-faq-ico::after { background: var(--blue); }
.win-faq-panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.35s ease; }
.win-faq-item[open] .win-faq-panel { grid-template-rows: 1fr; }
.win-faq-inner { overflow: hidden; min-height: 0; visibility: hidden; transition: visibility 0s 0.35s; }
.win-faq-item[open] .win-faq-inner { visibility: visible; transition-delay: 0s; }
.win-faq-inner p { margin: 0; padding: 0 18px 18px; color: var(--ink-2); font-size: 0.93rem; max-width: 82ch; }

/* ---------- Related ---------- */
.win-related { display: grid; grid-template-columns: 1fr; gap: 12px; }
.win-related-card { display: flex; flex-direction: column; gap: 3px; padding: 16px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--ink); transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s; }
.win-related-card:hover { border-color: var(--blue); transform: translateY(-2px); box-shadow: var(--shadow-1); }
.win-related-title { font: 600 0.98rem var(--font-display); }
.win-related-sub { font-size: 0.8rem; color: var(--ink-3); }

/* ---------- Footer actions + local footer ---------- */
.win-foot { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); }
.win-localfoot { border-top: 1px solid var(--line); margin-top: 20px; padding: 26px 0 30px; color: var(--ink-3); font-size: 0.78rem; display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between; }

/* ---------- Responsive ---------- */
@media (min-width: 560px) {
  .win-diag-opts { grid-template-columns: repeat(2, 1fr); }
  .win-diag-btn:first-child { grid-column: 1 / -1; }
  .win-related { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
  .win-grid { grid-template-columns: 236px 1fr; gap: 48px; align-items: start; }
  .win-toc { display: block; position: sticky; top: calc(var(--header-h) + 24px); max-height: calc(100vh - var(--header-h) - 48px); overflow-y: auto; }
  .win-related { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 559px) {
  .win-art-sum { padding: 14px 14px; }
  .win-art-inner { padding: 0 14px 16px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .win-progress span { transition: none !important; }
  .win-diag-btn, .win-vbtn, .win-related-card, .win-art-sum { transition: none; }
  .win-flow, .win-recovery, .win-node-ping { animation: none !important; opacity: 0.35; }
  .win-glow { animation: none !important; }
}

/* ---------- Print ---------- */
@media print {
  .topbar, .site-header, .win-progress, .win-toc, .win-diag-opts, #win-diag-reset,
  .win-verdict-btns, .win-check-actions, .win-cmd-copy, .win-foot, .win-localfoot,
  .toast, .to-top, .consent, .ad-wrap { display: none !important; }
  .win-grid { display: block; }
  .win-article { max-width: 100%; }
  .win-art, .win-art-panel, .win-art-inner, .win-faq-item, .win-faq-panel, .win-faq-inner { display: block !important; height: auto !important; }
  .win-art-panel, .win-art-inner, .win-faq-panel, .win-faq-inner { grid-template-rows: auto !important; visibility: visible !important; overflow: visible !important; }
  .win-diag-path { display: none; }
  a { text-decoration: none; color: var(--ink); }
}

/* ---------- Dark theme overrides ---------- */
[data-theme="dark"] .win-warn { background: #241a09; border-color: #4a3a17; border-left-color: var(--warn); }
[data-theme="dark"] .win-warn-title { color: #f3e2b8; }
[data-theme="dark"] .win-warn-title a { color: #f5c97a; }
[data-theme="dark"] .win-warn-text { color: #c9b587; }
[data-theme="dark"] .win-callout { background: var(--tint); border-left-color: var(--blue); }
[data-theme="dark"] .win-tip { background: rgba(47, 191, 143, 0.1); }
[data-theme="dark"] .win-note { background: var(--bg); }
[data-theme="dark"] .win-intro code, [data-theme="dark"] .win-sec code { background: var(--tint); color: var(--blue); border-color: var(--line-2); }
[data-theme="dark"] .win-diag { background: var(--surface); }
[data-theme="dark"] .win-diag-btn { background: var(--bg); color: var(--ink-2); border-color: var(--line-2); }
[data-theme="dark"] .win-diag-btn:hover { color: var(--blue); }
[data-theme="dark"] .win-diag-btn[aria-pressed="true"] { background: var(--blue); color: #fff; }
[data-theme="dark"] .win-verdict, .win-art, .win-faq-item, .win-check, .win-related-card, .win-cmd { }
[data-theme="dark"] .win-verdict { background: var(--surface); }
[data-theme="dark"] .win-vbtn { background: var(--surface); color: var(--ink-2); border-color: var(--line-2); }
[data-theme="dark"] .win-diagram { background: var(--dark); border-color: var(--dark-line); }
[data-theme="dark"] .win-diagram figcaption { color: var(--dark-muted); }
[data-theme="dark"] .win-art, [data-theme="dark"] .win-faq-item, [data-theme="dark"] .win-check, [data-theme="dark"] .win-related-card, [data-theme="dark"] .win-cmd { background: var(--surface); border-color: var(--line); }
[data-theme="dark"] .win-art-num { color: var(--ink-3); border-color: var(--line-2); }
[data-theme="dark"] .win-cmd code { background: var(--bg); color: var(--ink); }
[data-theme="dark"] .win-cmd-copy { background: var(--tint); color: var(--blue); }
[data-theme="dark"] .win-cmd-note code { color: var(--ink-2); }
[data-theme="dark"] .win-check-list li label:hover { background: var(--tint); }
[data-theme="dark"] .win-related-card:hover { border-color: var(--blue); }
[data-theme="dark"] .win-risk-safe { color: #8fe6c4; background: rgba(47,191,143,.14); border-color: rgba(47,191,143,.5); }
[data-theme="dark"] .win-risk-low { color: #f5c97a; background: rgba(245,180,83,.14); border-color: rgba(245,180,83,.5); }
[data-theme="dark"] .win-risk-caution { color: #f0b078; background: rgba(224,142,60,.14); border-color: rgba(224,142,60,.5); }
[data-theme="dark"] .win-risk-destructive { color: #f0a0a0; background: rgba(200,60,60,.16); border-color: rgba(200,60,60,.5); }
[data-theme="dark"] .win-localfoot { color: var(--ink-3); }