/* ===== VARIABLES ===== */
:root {
  --bg-card:        #1a1538;
  --bg-card-hover:  #1e1a38;
  --border:         #2e274e;
  --border-subtle:  #1e1935;

  --text:           #ece9ff;
  --text-bright:    #f9f8ff;
  --text-muted:     #8d8e96;
  --text-dim:       #9b95b8;
  --text-nav:       #e8e4ff;
  --text-card-desc: #c7c2ed;

  --accent:         #e0cdff;
  --accent-glow:    rgba(224, 205, 255, 0.16);
  --accent-border:  rgba(224, 205, 255, 0.28);

  /* Group: Kubernetes — cool blue family */
  --installation-color:  #7d86ff;
  --installation-glow:   rgba(125, 134, 255, 0.13);
  --installation-border: rgba(125, 134, 255, 0.28);

  --cluster-color:  #5cb1ff;
  --cluster-glow:   rgba(92, 177, 255, 0.12);
  --cluster-border: rgba(92, 177, 255, 0.26);

  --workloads-color:  #4fe5ff;
  --workloads-glow:   rgba(79, 229, 255, 0.12);
  --workloads-border: rgba(79, 229, 255, 0.28);

  /* Group: Tools — gold/amber family */
  --helm-color:  #fffb7a;
  --helm-glow:   rgba(255, 251, 122, 0.12);
  --helm-border: rgba(255, 251, 122, 0.26);

  --kustomize-color:  #ffd15c;
  --kustomize-glow:   rgba(255, 209, 92, 0.13);
  --kustomize-border: rgba(255, 209, 92, 0.28);

  --k9s-color:  #ffa04d;
  --k9s-glow:   rgba(255, 160, 77, 0.13);
  --k9s-border: rgba(255, 160, 77, 0.26);

  /* Group: Troubleshooting — cool red family */
  --ts-kubernetes-color:  #ff5757;
  --ts-kubernetes-glow:   rgba(255, 87, 87, 0.12);
  --ts-kubernetes-border: rgba(255, 87, 87, 0.28);

  --ts-tools-color:  #ff668c;
  --ts-tools-glow:   rgba(255, 102, 140, 0.13);
  --ts-tools-border: rgba(255, 102, 140, 0.28);

  /* Starred — sky cyan, distinct from category palette */
  --starred-color:  #5cd9ff;
  --starred-glow:   rgba(92, 217, 255, 0.13);
  --starred-border: rgba(92, 217, 255, 0.30);

  --success-color:  #5cb85c;

  --toast-bg:       #1e1438;
  --toast-text:     #c4a8ff;

  /* Syntax highlighting */
  --hl-cmd:   #83b3ff;   /* kubectl, helm */
  --hl-sub:   #ff8011;   /* get, apply, create */
  --hl-res:   #7af4f8eb;   /* pods, nodes, services */
  --hl-flag:  #f2d055;   /* --flag */
  --hl-ph:    #9afb50e2;   /* <placeholder> */
  --hl-val:   #ef8aa3;   /* values, misc */
  --hl-str:   #a0a0c8;   /* 'strings' */
  --hl-sep:   #919fb7;   /* -- | > */
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  font-size: 16px;
  background: linear-gradient(135deg, #0c1022 0%, #110f1f 50%, #18091e 100%);
  background-attachment: fixed;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: 'Space Grotesk', sans-serif;
  background: transparent;
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  padding-left: 38px;
  transition: padding-left 0.18s ease;
}
body.sidebar-collapsed { padding-left: 0; }

/* ===== SIDEBAR (site switcher) ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 38px;
  z-index: 110;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 0 4px;
  gap: 3px;
  background: rgba(17, 15, 31, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-right: 1px solid var(--border-subtle);
  transition: transform 0.18s ease;
}
body.sidebar-collapsed .sidebar { transform: translateX(-100%); }

.side-btn,
.side-toggle {
  position: relative;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: none;
  background: transparent;
  border-radius: 7px;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  font: inherit;
  transition: color 0.12s, background 0.12s;
}
.side-btn:hover,
.side-toggle:hover {
  color: var(--text-bright);
  background: rgba(255, 255, 255, 0.05);
}
.side-btn.active {
  color: var(--accent);
  background: var(--accent-glow);
}
.side-btn.active::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 0 2px 2px 0;
  background: var(--accent);
}
.side-btn:focus-visible,
.side-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.side-toggle { margin-top: auto; color: var(--text-muted); }

.side-btn[data-tooltip]::after,
.side-toggle[data-tooltip]::after,
.side-expand[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  padding: 5px 9px;
  background: rgba(17, 15, 31, 0.97);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-bright);
  font-size: 12px;
  font-weight: 500;
  font-family: 'Space Grotesk', sans-serif;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.12s;
  z-index: 200;
}
.side-btn:hover::after,
.side-btn:focus-visible::after,
.side-toggle:hover::after,
.side-toggle:focus-visible::after,
.side-expand:hover::after,
.side-expand:focus-visible::after { opacity: 1; }

/* Expand handle: tiny tab on left edge, only visible when sidebar is collapsed */
.side-expand {
  position: fixed;
  left: 0;
  bottom: 8px;
  width: 22px;
  height: 38px;
  z-index: 110;
  display: none;
  place-items: center;
  border: 1px solid var(--border-subtle);
  border-left: none;
  border-radius: 0 8px 8px 0;
  background: rgba(17, 15, 31, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.12s, background 0.12s;
}
.side-expand:hover {
  color: var(--text-bright);
  background: rgba(28, 22, 56, 0.97);
}
body.sidebar-collapsed .side-expand { display: grid; }

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(17, 15, 31, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 12px;
  height: 68px;
  display: flex;
  align-items: center;
  position: relative;
}

/* --- Logo --- */
.logo {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
  text-decoration: none;
  margin-top: 5px;
}

.logo-icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}

.logo-icon svg { width: 100%; height: 100%; }

.logo-text {
  font-size: 25px;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: -0.4px;
  line-height: 1.2;
}

.logo-sub {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.2px;
  font-family: 'JetBrains Mono', monospace;
}

/* --- Header action buttons --- */
.header-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
  align-items: center;
  margin-left: auto;
}

.action-wrap {
  position: relative;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--text-nav);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.12s, background 0.12s, border-color 0.12s;
}

.action-btn:hover,
.action-wrap.open .action-btn {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-glow);
}

.action-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.action-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 190px;
  background: rgba(17, 15, 31, 0.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px;
  z-index: 200;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.15s, transform 0.15s, visibility 0.15s;
}

.action-wrap.open .action-dropdown {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  visibility: visible;
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--text-nav);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.1s, color 0.1s;
}

.dropdown-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-bright);
}

.dropdown-link svg { flex-shrink: 0; }

.dropdown-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 4px 6px;
}

.dropdown-copy-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 6px;
  transition: background 0.1s;
}

.dropdown-copy-row:hover { background: rgba(255, 255, 255, 0.04); }

.dropdown-coin {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  flex-shrink: 0;
  width: 46px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.dropdown-net {
  font-size: 9px;
  font-weight: 500;
  color: var(--text-muted);
  opacity: 0.6;
  letter-spacing: 0.3px;
}

.dropdown-addr {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.dropdown-copy-btn {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.1s, border-color 0.1s, background 0.1s;
  line-height: 0;
}

.dropdown-copy-btn:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-glow);
}

.dropdown-copy-btn.copied {
  color: var(--success-color);
  border-color: rgba(92, 184, 92, 0.3);
  background: rgba(92, 184, 92, 0.06);
}

/* --- Search --- */
.search-container {
  position: absolute;
  left: 50%;
  top: calc(50% + 5px);
  transform: translateX(-50%) translateY(-50%);
  width: 464px;
  max-width: calc(100% - 480px);
}

.search-icon {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 37px;
  background: var(--border-subtle);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0 42px 0 40px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14.5px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: none;
}

.search-input:focus-visible {
  outline: none;
}

.search-input::placeholder { color: var(--text-muted); }

.search-count {
  position: absolute;
  right: 36px;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-dim);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
}
.search-count.active { opacity: 1; }

.search-clear {
  position: absolute;
  right: 9px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: none;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: color 0.15s;
  line-height: 0;
}
.search-clear:hover { color: var(--text); }
.search-clear.visible { display: flex; }

/* ===== NAV ===== */
/* No border-bottom — through its 0.07 alpha the page bg used to peek between rows on scroll.
   Instead each nav extends its bg 1px downward via box-shadow (gap filler against sub-pixel
   rendering), and a soft lavender gradient ::before draws the separator like under the
   section header / card title in cards. */
.nav {
  position: sticky;
  top: 69px;
  z-index: 90;
  background: rgba(17, 15, 31, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: none;
  box-shadow: 0 1px 0 0 rgba(17, 15, 31, 0.96);
}

/* Soft lavender separator at the bottom edge of nav-top and nav-mid (echoes card-desc::after).
   Sits inside the nav so it stays visible at sticky stack boundaries. */
.nav-top::before,
.nav-mid::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(221, 202, 250, 0.2) 30%, rgba(221, 202, 250, 0.2) 70%, transparent);
  pointer-events: none;
}

.nav-inner {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 12px;
  height: 44px;
  display: flex;
  align-items: center;
  gap: 3px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-inner::-webkit-scrollbar { display: none; }

/* Three-row nav: top groups (prominent) → mid categories (medium) → sub sections (whisper dropdown) */
.nav-top .nav-inner { height: 41px; }
.nav-mid .nav-inner { height: 38px; gap: 4px; }
.nav-sub .nav-inner { height: 32px; gap: 4px; }

.nav-btn {
  flex-shrink: 0;
  height: 32px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--text-nav);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15.5px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.12s, background 0.12s, border-color 0.12s, opacity 0.12s;
  white-space: nowrap;
}

/* Top row: prominent group buttons (padding matches cat-btn so the box snugness is consistent) */
.top-btn { height: 33px; padding: 0 13px; font-size: 16px; font-weight: 600; border-radius: 8px; letter-spacing: -0.1px; }

/* Mid row: category buttons (medium) */
.cat-btn { height: 29px; padding: 0 13px; font-size: 15px; font-weight: 500; border-radius: 7px; opacity: 0.9; }
.cat-btn:hover,
.cat-btn.active { opacity: 1; }

/* Anchor "All" buttons in top and mid rows to identical width — aligns the nav-sep that follows.
   Padding overridden so both fit text snugly at the smaller width. */
.top-btn[data-group="all"],
.cat-btn[data-cat="all"] { min-width: 48px; padding-left: 10px; padding-right: 10px; justify-content: center; }

/* Sub row: section chips — readable, slightly subdued vs. category buttons */
.sec-btn { height: 24px; padding: 0 10px; font-size: 14px; font-weight: 500; border-radius: 6px; letter-spacing: 0.1px; opacity: 0.75; color: var(--text-nav); }
.sec-btn:hover { opacity: 1; color: #fff; background: rgba(255,255,255,0.05); }
.sec-btn.active { opacity: 1; }

.nav-btn:hover {
  color: #fff;
  background: rgba(255,255,255,0.07);
}

.nav-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.nav-btn.active {
  color: var(--accent);
  background: rgba(221, 202, 250, 0.1);
  border-color: var(--accent-border);
}

/* Top-level group buttons stay monotone (lavender accent) by default.
   When a category is selected, the active top-btn inherits that category's colour
   via [data-cat="..."] applied by JS — so the top row mirrors the picked sub-section. */
.top-btn.active[data-cat="installation"] { color: var(--installation-color);    background: var(--installation-glow);    border-color: var(--installation-border); }
.top-btn.active[data-cat="cluster"]      { color: var(--cluster-color);         background: var(--cluster-glow);         border-color: var(--cluster-border); }
.top-btn.active[data-cat="workloads"]    { color: var(--workloads-color);       background: var(--workloads-glow);       border-color: var(--workloads-border); }
.top-btn.active[data-cat="helm"]         { color: var(--helm-color);            background: var(--helm-glow);            border-color: var(--helm-border); }
.top-btn.active[data-cat="kustomize"]    { color: var(--kustomize-color);       background: var(--kustomize-glow);       border-color: var(--kustomize-border); }
.top-btn.active[data-cat="k9s"]          { color: var(--k9s-color);             background: var(--k9s-glow);             border-color: var(--k9s-border); }
.top-btn.active[data-cat="troubleshooting-kubernetes"] { color: var(--ts-kubernetes-color); background: var(--ts-kubernetes-glow); border-color: var(--ts-kubernetes-border); }
.top-btn.active[data-cat="troubleshooting-tools"]      { color: var(--ts-tools-color);      background: var(--ts-tools-glow);      border-color: var(--ts-tools-border); }

/* Starred top-btn lives on the far right of the row (visual "personal" zone, separated from group nav) */
.top-btn.top-starred { margin-left: auto; }

/* Mid row: category buttons (active) — per-category color */
.cat-btn.active[data-cat="installation"] { color: var(--installation-color);    background: var(--installation-glow);    border-color: var(--installation-border); }
.cat-btn.active[data-cat="cluster"]      { color: var(--cluster-color);         background: var(--cluster-glow);         border-color: var(--cluster-border); }
.cat-btn.active[data-cat="workloads"]    { color: var(--workloads-color);       background: var(--workloads-glow);       border-color: var(--workloads-border); }
.cat-btn.active[data-cat="helm"]         { color: var(--helm-color);            background: var(--helm-glow);            border-color: var(--helm-border); }
.cat-btn.active[data-cat="kustomize"]    { color: var(--kustomize-color);       background: var(--kustomize-glow);       border-color: var(--kustomize-border); }
.cat-btn.active[data-cat="k9s"]          { color: var(--k9s-color);             background: var(--k9s-glow);             border-color: var(--k9s-border); }
.cat-btn.active[data-cat="troubleshooting-kubernetes"] { color: var(--ts-kubernetes-color); background: var(--ts-kubernetes-glow); border-color: var(--ts-kubernetes-border); }
.cat-btn.active[data-cat="troubleshooting-tools"]      { color: var(--ts-tools-color);      background: var(--ts-tools-glow);      border-color: var(--ts-tools-border); }

/* Sub row: section buttons (active) — inherit category color via [data-cat] on navSub */
#navSub[data-cat="installation"]              .sec-btn.active { color: var(--installation-color);    background: var(--installation-glow);    border-color: var(--installation-border); }
#navSub[data-cat="cluster"]                   .sec-btn.active { color: var(--cluster-color);         background: var(--cluster-glow);         border-color: var(--cluster-border); }
#navSub[data-cat="workloads"]                 .sec-btn.active { color: var(--workloads-color);       background: var(--workloads-glow);       border-color: var(--workloads-border); }
#navSub[data-cat="helm"]                      .sec-btn.active { color: var(--helm-color);            background: var(--helm-glow);            border-color: var(--helm-border); }
#navSub[data-cat="kustomize"]                 .sec-btn.active { color: var(--kustomize-color);       background: var(--kustomize-glow);       border-color: var(--kustomize-border); }
#navSub[data-cat="k9s"]                       .sec-btn.active { color: var(--k9s-color);             background: var(--k9s-glow);             border-color: var(--k9s-border); }
#navSub[data-cat="troubleshooting-kubernetes"] .sec-btn.active { color: var(--ts-kubernetes-color);  background: var(--ts-kubernetes-glow);   border-color: var(--ts-kubernetes-border); }
#navSub[data-cat="troubleshooting-tools"]      .sec-btn.active { color: var(--ts-tools-color);       background: var(--ts-tools-glow);        border-color: var(--ts-tools-border); }

/* Nav separator (between "All" and group buttons) */
.nav-sep {
  width: 1px;
  height: 18px;
  background: var(--border);
  flex-shrink: 0;
  margin: 0 4px;
}

/* Mid-nav row sticky position (nav-top top 69 + inner 41, no border) */
.nav-mid {
  top: 110px;
}

/* Sub-nav row — appears when a category is active.
   Semi-transparent so it reads as a softer "whisper" layer below the main nav rows.
   Filler shadow and right-edge fade are tuned to its own alpha for visual consistency. */
.nav-sub {
  top: 148px;
  background: rgba(17, 15, 31, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 0 rgba(17, 15, 31, 0.55);
}

/* ===== MAIN ===== */
.main {
  max-width: 1600px;
  margin: 0 auto;
  padding: 20px 12px 80px;
  min-height: 80vh;
}

/* ===== SECTION ===== */
.section { margin-bottom: 44px; content-visibility: auto; contain-intrinsic-size: 0 700px; scroll-margin-top: 192px; }
.section[hidden] { display: none; }

.section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  padding-bottom: 6px;
  position: relative;
}

.section-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(221,202,250,0.35) 0%, rgba(221,202,250,0.15) 50%, transparent 100%);
}

/* Category-colored header underlines */
.section[data-cat="installation"] .section-header::after { background: linear-gradient(90deg, rgba(125,134,255,0.70) 0%, rgba(125,134,255,0.50) 50%, rgba(125,134,255,0.28) 80%, transparent 100%); }
.section[data-cat="cluster"]      .section-header::after { background: linear-gradient(90deg, rgba(92,177,255,0.70)  0%, rgba(92,177,255,0.50)  50%, rgba(92,177,255,0.28)  80%, transparent 100%); }
.section[data-cat="workloads"]    .section-header::after { background: linear-gradient(90deg, rgba(79,229,255,0.70)  0%, rgba(79,229,255,0.50)  50%, rgba(79,229,255,0.28)  80%, transparent 100%); }
.section[data-cat="helm"]         .section-header::after { background: linear-gradient(90deg, rgba(255,251,122,0.70) 0%, rgba(255,251,122,0.50) 50%, rgba(255,251,122,0.28) 80%, transparent 100%); }
.section[data-cat="kustomize"]    .section-header::after { background: linear-gradient(90deg, rgba(255,209,92,0.70)  0%, rgba(255,209,92,0.50)  50%, rgba(255,209,92,0.28)  80%, transparent 100%); }
.section[data-cat="k9s"]          .section-header::after { background: linear-gradient(90deg, rgba(255,160,77,0.70)  0%, rgba(255,160,77,0.50)  50%, rgba(255,160,77,0.28)  80%, transparent 100%); }
.section[data-cat="troubleshooting-kubernetes"] .section-header::after { background: linear-gradient(90deg, rgba(255,87,87,0.70)   0%, rgba(255,87,87,0.50)   50%, rgba(255,87,87,0.28)   80%, transparent 100%); }
.section[data-cat="troubleshooting-tools"]      .section-header::after { background: linear-gradient(90deg, rgba(255,102,140,0.70) 0%, rgba(255,102,140,0.50) 50%, rgba(255,102,140,0.28) 80%, transparent 100%); }

.section-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(221, 202, 250, 0.1);
  border: 1px solid var(--accent-border);
  border-radius: 7px;
  color: var(--accent);
  flex-shrink: 0;
}

/* Category-colored icons */
.section[data-cat="installation"] .section-icon { background: var(--installation-glow);  border-color: var(--installation-border);  color: var(--installation-color); }
.section[data-cat="cluster"]      .section-icon { background: var(--cluster-glow);       border-color: var(--cluster-border);       color: var(--cluster-color); }
.section[data-cat="workloads"]    .section-icon { background: var(--workloads-glow);     border-color: var(--workloads-border);     color: var(--workloads-color); }
.section[data-cat="helm"]         .section-icon { background: var(--helm-glow);          border-color: var(--helm-border);          color: var(--helm-color); }
.section[data-cat="kustomize"]    .section-icon { background: var(--kustomize-glow);     border-color: var(--kustomize-border);     color: var(--kustomize-color); }
.section[data-cat="k9s"]          .section-icon { background: var(--k9s-glow);           border-color: var(--k9s-border);           color: var(--k9s-color); }
.section[data-cat="troubleshooting-kubernetes"] .section-icon { background: var(--ts-kubernetes-glow); border-color: var(--ts-kubernetes-border); color: var(--ts-kubernetes-color); }
.section[data-cat="troubleshooting-tools"]      .section-icon { background: var(--ts-tools-glow);      border-color: var(--ts-tools-border);      color: var(--ts-tools-color); }

.section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: -0.3px;
}

.section-sub {
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-muted);
  margin-left: 2px;
}

/* Section command counter — pushed to the far right of the header */
.section-count {
  margin-left: auto;
  flex-shrink: 0;
  padding: 3px 10px;
  font-size: 13px;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.2px;
  border: 1px solid var(--accent-border);
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 0;
  white-space: nowrap;
  line-height: 1.4;
}

.section[data-cat="installation"] .section-count { color: var(--installation-color);    background: var(--installation-glow);    border-color: var(--installation-border); }
.section[data-cat="cluster"]      .section-count { color: var(--cluster-color);         background: var(--cluster-glow);         border-color: var(--cluster-border); }
.section[data-cat="workloads"]    .section-count { color: var(--workloads-color);       background: var(--workloads-glow);       border-color: var(--workloads-border); }
.section[data-cat="helm"]         .section-count { color: var(--helm-color);            background: var(--helm-glow);            border-color: var(--helm-border); }
.section[data-cat="kustomize"]    .section-count { color: var(--kustomize-color);       background: var(--kustomize-glow);       border-color: var(--kustomize-border); }
.section[data-cat="k9s"]          .section-count { color: var(--k9s-color);             background: var(--k9s-glow);             border-color: var(--k9s-border); }
.section[data-cat="troubleshooting-kubernetes"] .section-count { color: var(--ts-kubernetes-color); background: var(--ts-kubernetes-glow); border-color: var(--ts-kubernetes-border); }
.section[data-cat="troubleshooting-tools"]      .section-count { color: var(--ts-tools-color);      background: var(--ts-tools-glow);      border-color: var(--ts-tools-border); }

/* Category-colored sub labels */
.section[data-cat="installation"] .section-sub { color: var(--installation-color);  opacity: 0.75; }
.section[data-cat="cluster"]      .section-sub { color: var(--cluster-color);       opacity: 0.75; }
.section[data-cat="workloads"]    .section-sub { color: var(--workloads-color);     opacity: 0.75; }
.section[data-cat="helm"]         .section-sub { color: var(--helm-color);          opacity: 0.75; }
.section[data-cat="kustomize"]    .section-sub { color: var(--kustomize-color);     opacity: 0.75; }
.section[data-cat="k9s"]          .section-sub { color: var(--k9s-color);           opacity: 0.75; }
.section[data-cat="troubleshooting-kubernetes"] .section-sub { color: var(--ts-kubernetes-color); opacity: 0.75; }
.section[data-cat="troubleshooting-tools"]      .section-sub { color: var(--ts-tools-color);      opacity: 0.75; }

/* ===== CARDS GRID ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

/* ===== CARD ===== */

/* Neutral cool-purple — harmonized with page gradient */
.card {
  background:
    linear-gradient(180deg, rgba(167,139,250,0.05) 0%, transparent 28%),
    linear-gradient(155deg, #1a1538 0%, #161233 55%, #110f28 100%);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  transform: translateY(-2px);
}
.section[data-cat="installation"] .card:hover { border-color: var(--installation-color); }
.section[data-cat="cluster"]      .card:hover { border-color: var(--cluster-color); }
.section[data-cat="workloads"]    .card:hover { border-color: var(--workloads-color); }
.section[data-cat="helm"]         .card:hover { border-color: var(--helm-color); }
.section[data-cat="kustomize"]    .card:hover { border-color: var(--kustomize-color); }
.section[data-cat="k9s"]          .card:hover { border-color: var(--k9s-color); }
.section[data-cat="troubleshooting-kubernetes"] .card:hover { border-color: var(--ts-kubernetes-color); }
.section[data-cat="troubleshooting-tools"]      .card:hover { border-color: var(--ts-tools-color); }
.card[hidden] { display: none; }

.card-title {
  padding: 10px 14px 7px;
  font-size: 14.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.9px;
  color: var(--text);
  background: rgba(0, 0, 0, 0.18);
}

.card-desc {
  padding: 5px 14px 11px;
  font-size: 14px;
  color: var(--text-card-desc);
  line-height: 1.5;
  position: relative;
}

.card-desc::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10px;
  right: 10px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(221, 202, 250, 0.3) 30%, rgba(221, 202, 250, 0.3) 70%, transparent);
}

/* Category-colored card separators */
.section[data-cat="installation"] .card-desc::after { background: linear-gradient(90deg, transparent, rgba(125,134,255,0.25) 30%, rgba(125,134,255,0.25) 70%, transparent); }
.section[data-cat="cluster"]      .card-desc::after { background: linear-gradient(90deg, transparent, rgba(92,177,255,0.24)  30%, rgba(92,177,255,0.24)  70%, transparent); }
.section[data-cat="workloads"]    .card-desc::after { background: linear-gradient(90deg, transparent, rgba(79,229,255,0.24)  30%, rgba(79,229,255,0.24)  70%, transparent); }
.section[data-cat="helm"]         .card-desc::after { background: linear-gradient(90deg, transparent, rgba(255,251,122,0.24) 30%, rgba(255,251,122,0.24) 70%, transparent); }
.section[data-cat="kustomize"]    .card-desc::after { background: linear-gradient(90deg, transparent, rgba(255,209,92,0.25)  30%, rgba(255,209,92,0.25)  70%, transparent); }
.section[data-cat="k9s"]          .card-desc::after { background: linear-gradient(90deg, transparent, rgba(255,160,77,0.25)  30%, rgba(255,160,77,0.25)  70%, transparent); }
.section[data-cat="troubleshooting-kubernetes"] .card-desc::after { background: linear-gradient(90deg, transparent, rgba(255,87,87,0.22)   30%, rgba(255,87,87,0.22)   70%, transparent); }
.section[data-cat="troubleshooting-tools"]      .card-desc::after { background: linear-gradient(90deg, transparent, rgba(255,102,140,0.22) 30%, rgba(255,102,140,0.22) 70%, transparent); }

/* ===== COMMAND LIST ===== */
.cmd-list { padding: 4px 0; }

.cmd-item {
  position: relative;
  padding: 8px 76px 8px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: background 0.1s, border-color 0.1s;
}

.cmd-item:hover {
  background: var(--bg-card-hover);
  border-left-color: var(--accent);
}

/* Category-colored hover accent stripe */
.section[data-cat="installation"] .cmd-item:hover { border-left-color: var(--installation-color); }
.section[data-cat="cluster"]      .cmd-item:hover { border-left-color: var(--cluster-color); }
.section[data-cat="workloads"]    .cmd-item:hover { border-left-color: var(--workloads-color); }
.section[data-cat="helm"]         .cmd-item:hover { border-left-color: var(--helm-color); }
.section[data-cat="kustomize"]    .cmd-item:hover { border-left-color: var(--kustomize-color); }
.section[data-cat="k9s"]          .cmd-item:hover { border-left-color: var(--k9s-color); }
.section[data-cat="troubleshooting-kubernetes"] .cmd-item:hover { border-left-color: var(--ts-kubernetes-color); }
.section[data-cat="troubleshooting-tools"]      .cmd-item:hover { border-left-color: var(--ts-tools-color); }

.cmd-item[hidden] { display: none; }

body.starred-mode .nav-mid,
body.starred-mode .nav-sub { display: none !important; }

.cmd-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 15px;
  line-height: 1.55;
  word-break: break-all;
  color: var(--text);
}

.cmd-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ===== COPY BUTTON ===== */
.copy-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.1s, color 0.1s, border-color 0.1s, background 0.1s;
  flex-shrink: 0;
}

.cmd-item:hover .copy-btn { opacity: 1; }

.copy-btn:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: rgba(224, 205, 255, 0.08);
}

.copy-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  opacity: 1;
}

.copy-btn.copied {
  color: var(--success-color);
  border-color: rgba(92, 184, 92, 0.3);
  background: rgba(92, 184, 92, 0.08);
  opacity: 1;
}

/* ===== STAR BUTTON ===== */
.star-btn {
  position: absolute;
  right: 42px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  color: rgba(255, 255, 255, 0.32);
  cursor: pointer;
  opacity: 0.55;
  transition: opacity 0.1s, color 0.1s, border-color 0.1s, background 0.1s, filter 0.15s;
  flex-shrink: 0;
}
.star-btn svg { fill-opacity: 0; }
.cmd-item:hover .star-btn { opacity: 1; }

.star-btn:hover {
  color: var(--starred-color);
  border-color: var(--starred-border);
  background: var(--starred-glow);
}

.star-btn:focus-visible {
  outline: 2px solid var(--starred-color);
  outline-offset: 1px;
  opacity: 1;
}

.star-btn.starred {
  opacity: 1;
  color: var(--starred-color);
  filter: drop-shadow(0 0 5px var(--starred-glow));
}
.star-btn.starred svg { fill-opacity: 1; }
.star-btn.starred:hover {
  background: var(--starred-glow);
  border-color: var(--starred-border);
}

/* ===== SYNTAX HIGHLIGHTING ===== */
.hl-cmd  { color: var(--hl-cmd); font-weight: 600; }
.hl-sub  { color: var(--hl-sub); }
.hl-res  { color: var(--hl-res); }
.hl-flag { color: var(--hl-flag); }
.hl-ph   { color: var(--hl-ph); font-style: italic; }
.hl-val  { color: var(--hl-val); }
.hl-str  { color: var(--hl-str); }
.hl-sep  { color: var(--hl-sep); }

/* ===== SEARCH HIGHLIGHT ===== */
mark {
  background: rgba(224, 205, 255, 0.28);
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
  color: var(--text-muted);
  text-align: center;
}

.empty-state svg {
  opacity: 0.25;
  margin-bottom: 14px;
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.empty-state p { font-size: 14px; }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(60px);
  background: var(--toast-bg);
  border: 1px solid var(--accent-border);
  color: var(--toast-text);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 16.5px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 7px;
  pointer-events: none;
  opacity: 0;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.2s;
  z-index: 500;
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ===== SCROLL TO TOP ===== */
.scroll-top-btn {
  position: fixed;
  bottom: 24px;
  right: 8px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: color 0.15s, border-color 0.15s, background 0.15s, opacity 0.2s;
  z-index: 100;
}

.scroll-top-btn.visible {
  opacity: 1;
  pointer-events: all;
}

.scroll-top-btn:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: rgba(224, 205, 255, 0.07);
}

.scroll-top-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}


/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 22px 24px;
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
}

.footer a { color: var(--accent); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer p + p { margin-top: 4px; }
.disclaimer { font-size: 13px; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #110f1f; }
::-webkit-scrollbar-thumb { background: #3a3260; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }
* { scrollbar-width: thin; scrollbar-color: #3a3260 #110f1f; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

  .nav-mid::after,
  .nav-sub::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 48px;
    background: linear-gradient(to right, transparent, rgba(17, 15, 31, 0.96));
    pointer-events: none;
    z-index: 1;
  }
  .nav-sub::after { background: linear-gradient(to right, transparent, rgba(17, 15, 31, 0.55)); }
}

@media (max-width: 900px) {
  .logo-sub { font-size: 12px; }
  .header-inner {
    height: auto;
    padding: 10px 14px;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
  }
  .logo { margin-top: 0; flex: 0 0 100%; }
  .logo-icon { width: 44px; height: 44px; }
  .logo-text { font-size: 23px; }
  .search-container {
    position: relative;
    transform: none;
    left: auto;
    flex: 1;
    width: auto;
    max-width: none;
    min-width: 0;
  }
  .search-input { height: 37px; font-size: 13.5px; }
  .nav { top: 110px; }
  .nav-mid { top: 151px; }
  .nav-sub { top: 189px; }
  .section { scroll-margin-top: 233px; }
  .header-actions { gap: 4px; margin-left: 0; }
  .action-btn-label { display: none; }
  .action-btn { padding: 0 9px; gap: 0; }
  .action-dropdown { max-width: calc(100vw - 28px); right: 0; left: auto; }
  .nav-inner { padding: 0 14px; }
}

@media (max-width: 680px) {
  .main { padding: 18px 14px 80px; }
  .cards-grid { grid-template-columns: 1fr; }
  html { background-attachment: scroll; }
}

@media (hover: none) {
  .copy-btn { opacity: 0.7; min-width: 44px; min-height: 44px; }
  .star-btn { opacity: 0.85; min-width: 44px; min-height: 44px; right: 50px; }
  .cmd-item { padding-right: 96px; }
  /* Touch screens: per-element minimums so context row doesn't overflow */
  .top-btn { min-height: 40px; }
  .cat-btn { min-height: 34px; }
  .sec-btn { min-height: 28px; }
  .scroll-top-btn { min-width: 44px; min-height: 44px; }
}

@media (max-width: 400px) {
  .logo-text { font-size: 18px; }
  .logo-icon { width: 26px; height: 26px; }
  .nav { top: 97px; }
  .nav-mid { top: 138px; }
  .nav-sub { top: 176px; }
  .action-btn { height: 30px; }
  .section { scroll-margin-top: 220px; }
}

/* ===== PRINT ===== */
@media print {
  html { background: white; }
  body { color: #111; }

  .header, .nav, .scroll-top-btn, .toast, .copy-btn, .star-btn { display: none !important; }

  .main { padding: 0; max-width: 100%; min-height: 0; }
  .section { margin-bottom: 24px; }

  .cards-grid { grid-template-columns: 1fr !important; }

  .card {
    background: white !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    break-inside: avoid;
  }

  .card-title { color: #111 !important; background: #f2f2f2 !important; }
  .card-desc  { color: #555 !important; }

  .section-title { color: #111 !important; }
  .section-sub   { color: #777 !important; }

  /* Flatten syntax highlighting to readable dark */
  .cmd-code,
  .hl-cmd, .hl-sub, .hl-res, .hl-flag,
  .hl-ph, .hl-val, .hl-str, .hl-sep {
    color: #111 !important;
    font-style: normal !important;
  }

  .cmd-desc { color: #555 !important; }

  mark { background: #ffe066 !important; color: #111 !important; }

  .footer { border-top: 1px solid #ccc !important; color: #555 !important; }
  .footer a { color: #333 !important; }
  .disclaimer { color: #777 !important; }
}