/* =========================================================================
   NetOpsUmbrella docs system — central stylesheet
   One file controls the whole look. No build step, no dependencies.
   ========================================================================= */

:root {
  /* Palette — deep slate sidebar, clean paper content, signal-teal accent */
  --c-bg:          #ffffff;
  --c-paper:       #fbfcfd;
  --c-ink:         #1a2430;
  --c-ink-soft:    #46566a;
  --c-ink-faint:   #7888a0;
  --c-line:        #e2e8f0;
  --c-line-soft:   #eef2f6;

  --c-nav-bg:      #131c2b;
  --c-nav-bg-2:    #0d1421;
  --c-nav-ink:     #aebbcd;
  --c-nav-ink-dim: #6b7a92;
  --c-nav-hover:   #1d2a3e;
  --c-nav-active:  #16e0c4;

  --c-accent:      #0bb3a0;
  --c-accent-deep: #088576;
  --c-accent-soft: #e3f7f4;
  --c-warn-bg:     #fff7e6;
  --c-warn-line:   #f0c14b;
  --c-info-bg:     #eef4fb;
  --c-info-line:   #6fa8dc;
  --c-danger-bg:   #fdeeee;
  --c-danger-line: #e0736f;
  --c-code-bg:     #131c2b;
  --c-code-ink:    #d7e2f0;

  /* Type */
  --f-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --f-mono: "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;

  --sidebar-w: 290px;
  --content-max: 860px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--f-sans);
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

/* ---- Layout shell -------------------------------------------------------- */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: linear-gradient(180deg, var(--c-nav-bg) 0%, var(--c-nav-bg-2) 100%);
  color: var(--c-nav-ink);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  border-right: 1px solid #0a1019;
}

.content-wrap {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  justify-content: center;
  padding: 0 48px;
}

.content {
  width: 100%;
  max-width: var(--content-max);
  padding: 40px 0 120px;
}

/* ---- Sidebar brand ------------------------------------------------------- */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 22px 22px 18px;
  border-bottom: 1px solid #0a1019;
  position: sticky;
  top: 0;
  background: var(--c-nav-bg);
  z-index: 2;
}
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c-accent) 0%, var(--c-accent-deep) 100%);
  display: grid; place-items: center;
  font-family: var(--f-mono);
  font-weight: 700;
  color: #04201d;
  font-size: 15px;
  flex: 0 0 auto;
}
.brand-text { line-height: 1.2; }
.brand-text .name { color: #fff; font-weight: 600; font-size: 15px; letter-spacing: .2px; }
.brand-text .sub  { color: var(--c-nav-ink-dim); font-size: 11.5px; font-family: var(--f-mono); text-transform: uppercase; letter-spacing: 1px; }

/* ---- Sidebar nav --------------------------------------------------------- */
.nav { padding: 14px 12px 40px; }
.nav-group { margin-bottom: 4px; }
.nav-group-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--c-nav-ink-dim);
  padding: 16px 12px 6px;
  font-weight: 600;
}
.nav a {
  display: block;
  color: var(--c-nav-ink);
  text-decoration: none;
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 14px;
  border-left: 2px solid transparent;
  transition: background .12s ease, color .12s ease;
}
.nav a:hover { background: var(--c-nav-hover); color: #fff; }
.nav a.active {
  background: var(--c-nav-hover);
  color: #fff;
  border-left-color: var(--c-nav-active);
  font-weight: 500;
}
.nav a.child { padding-left: 28px; font-size: 13.5px; color: var(--c-nav-ink-dim); }
.nav a.child:hover, .nav a.child.active { color: #fff; }

/* ---- Breadcrumbs --------------------------------------------------------- */
.breadcrumb {
  font-size: 13px;
  color: var(--c-ink-faint);
  margin-bottom: 18px;
  font-family: var(--f-mono);
}
.breadcrumb a { color: var(--c-ink-faint); text-decoration: none; }
.breadcrumb a:hover { color: var(--c-accent-deep); }
.breadcrumb span { margin: 0 8px; opacity: .5; }

/* ---- Headings ------------------------------------------------------------ */
h1 {
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 8px;
  font-weight: 700;
  letter-spacing: -.5px;
}
.lead {
  font-size: 17px;
  color: var(--c-ink-soft);
  margin: 0 0 32px;
  line-height: 1.55;
}
h2 {
  font-size: 22px;
  margin: 44px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--c-line);
  font-weight: 650;
  letter-spacing: -.2px;
}
h3 { font-size: 17.5px; margin: 28px 0 10px; font-weight: 600; }
h4 { font-size: 15px; margin: 22px 0 8px; font-weight: 600; color: var(--c-ink-soft); text-transform: uppercase; letter-spacing: .5px; }

p { margin: 0 0 16px; }
a { color: var(--c-accent-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

ul, ol { margin: 0 0 16px; padding-left: 24px; }
li { margin-bottom: 6px; }

strong { font-weight: 650; color: var(--c-ink); }

/* ---- Code ---------------------------------------------------------------- */
code {
  font-family: var(--f-mono);
  font-size: .88em;
  background: var(--c-line-soft);
  color: var(--c-accent-deep);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--c-line);
}
pre {
  background: var(--c-code-bg);
  color: var(--c-code-ink);
  padding: 18px 20px;
  border-radius: 10px;
  overflow-x: auto;
  font-family: var(--f-mono);
  font-size: 13px;
  line-height: 1.6;
  margin: 0 0 20px;
  border: 1px solid #0a1019;
}
pre code { background: none; border: none; color: inherit; padding: 0; font-size: inherit; }

/* ---- Callouts ------------------------------------------------------------ */
.note, .warn, .danger {
  padding: 14px 18px;
  border-radius: 8px;
  margin: 0 0 20px;
  font-size: 14.5px;
  border-left: 4px solid;
}
.note   { background: var(--c-info-bg);   border-color: var(--c-info-line); }
.warn   { background: var(--c-warn-bg);   border-color: var(--c-warn-line); }
.danger { background: var(--c-danger-bg); border-color: var(--c-danger-line); }
.note .label, .warn .label, .danger .label {
  display: block;
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.note .label   { color: #2c6ca8; }
.warn .label   { color: #a87b14; }
.danger .label { color: #b0413c; }
.note p:last-child, .warn p:last-child, .danger p:last-child { margin-bottom: 0; }

/* ---- Tables -------------------------------------------------------------- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 24px;
  font-size: 14px;
}
th, td {
  text-align: left;
  padding: 10px 14px;
  border: 1px solid var(--c-line);
  vertical-align: top;
}
th {
  background: var(--c-paper);
  font-weight: 600;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: .4px;
  color: var(--c-ink-soft);
}
tr:nth-child(even) td { background: var(--c-paper); }

/* ---- Cards (landing tiles) ---------------------------------------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin: 28px 0;
}
.card {
  display: block;
  padding: 20px;
  border: 1px solid var(--c-line);
  border-radius: 10px;
  background: var(--c-bg);
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.card:hover {
  border-color: var(--c-accent);
  box-shadow: 0 4px 18px rgba(11,179,160,.12);
  transform: translateY(-2px);
  text-decoration: none;
}
.card .tag {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-accent-deep);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.card h3 { margin: 6px 0 6px; font-size: 16px; color: var(--c-ink); }
.card p { margin: 0; font-size: 13.5px; color: var(--c-ink-soft); }

/* ---- Page footer / pager ------------------------------------------------- */
.pager {
  display: flex;
  justify-content: space-between;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--c-line);
  gap: 16px;
}
.pager a {
  flex: 1;
  padding: 14px 18px;
  border: 1px solid var(--c-line);
  border-radius: 8px;
  font-size: 14px;
}
.pager a:hover { border-color: var(--c-accent); text-decoration: none; }
.pager .dir { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--c-ink-faint); margin-bottom: 2px; }
.pager .next { text-align: right; }

.doc-footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--c-line-soft);
  font-size: 12.5px;
  color: var(--c-ink-faint);
  font-family: var(--f-mono);
}

/* ---- Mobile -------------------------------------------------------------- */
.menu-toggle {
  display: none;
  position: fixed;
  top: 14px; left: 14px;
  z-index: 20;
  background: var(--c-nav-bg);
  color: #fff;
  border: none;
  width: 42px; height: 42px;
  border-radius: 8px;
  font-size: 20px;
  cursor: pointer;
}

@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .sidebar {
    position: fixed;
    left: 0; top: 0;
    transform: translateX(-100%);
    transition: transform .25s ease;
    z-index: 15;
    box-shadow: 4px 0 24px rgba(0,0,0,.3);
  }
  .sidebar.open { transform: translateX(0); }
  .content-wrap { padding: 0 20px; }
  .content { padding-top: 64px; }
  h1 { font-size: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}

/* ---- i18n language switch + GitHub backlink ----------------------------- */
.lang-switch {
  margin-left: auto;
  background: var(--c-nav-hover);
  color: #fff;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 6px;
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .5px;
  padding: 4px 10px;
  cursor: pointer;
  transition: background .12s ease, border-color .12s ease;
}
.lang-switch:hover { background: var(--c-accent-deep); border-color: var(--c-accent); }

.gh-link {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 8px 12px 24px;
  padding: 9px 12px;
  color: var(--c-nav-ink);
  text-decoration: none;
  font-size: 13.5px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 6px;
  transition: background .12s ease, color .12s ease, border-color .12s ease;
}
.gh-link:hover { background: var(--c-nav-hover); color: #fff; border-color: var(--c-accent); text-decoration: none; }
.gh-link svg { flex: 0 0 auto; }

/* ---- Terminal preview (appliance console) ------------------------------- */
.term-preview {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #0a1019;
  margin: 0 0 24px;
  box-shadow: 0 8px 30px rgba(0,0,0,.18);
  background: #0d1421;
}
.term-bar {
  background: #161b22;
  padding: 9px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid #0a1019;
}
.term-dot { width: 12px; height: 12px; border-radius: 50%; flex: 0 0 auto; }
.d-red { background: #ff5f57; }
.d-yellow { background: #ffbd2e; }
.d-green { background: #28c840; }
.term-bar-title {
  flex: 1;
  text-align: center;
  font-family: var(--f-mono);
  font-size: 12px;
  color: #6b7a92;
  letter-spacing: .3px;
}
.term-body {
  white-space: pre;
  font-family: var(--f-mono);
  font-size: 13px;
  line-height: 1.55;
  color: #d7e2f0;
  padding: 18px 20px 22px;
  overflow-x: auto;
}
.term-body .t-logo { color: #16e0c4; font-weight: 600; }
.term-body .t-dim  { color: #6b7a92; }
.term-body .t-head { color: #f0883e; letter-spacing: 1px; }
.term-body .t-link { color: #58a6ff; }
.term-body .t-num  { color: #58a6ff; }
.term-body .t-ok   { color: #3fb950; }
.term-body .t-warn { color: #d29922; }
.term-body .t-err  { color: #f85149; }
.term-body .t-cursor {
  display: inline-block;
  width: 8px; height: 14px;
  background: #16e0c4;
  vertical-align: text-bottom;
  animation: term-blink 1.1s step-end infinite;
}
@keyframes term-blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .term-body .t-cursor { animation: none; } }