/* ===== VARIABLES ===== */
:root {
  --bg:             #110f1f;
  --bg-card:        #1a1538;
  --bg-card-hover:  #1e1a38;
  --bg-nav:         #110f1f;
  --border:         #2e274e;
  --border-subtle:  #1e1935;

  --text:           #dbd8ef;
  --text-bright:    #f2f0fc;
  --text-muted:     #847fa0;
  --text-dim:       #9b95b8;
  --text-nav:       #c9c6e0;
  --text-card-desc: #b1abc7;

  --accent:         #e0cdff;
  --accent-hover:   #ede0ff;
  --accent-glow:    rgba(224, 205, 255, 0.16);
  --accent-border:  rgba(224, 205, 255, 0.28);

  --helm-color:     #f0c8ee;
  --helm-glow:      rgba(240, 200, 238, 0.14);
  --helm-border:    rgba(240, 200, 238, 0.28);

  --cluster-color:  #6ac4be;
  --cluster-glow:   rgba(106, 196, 190, 0.12);
  --cluster-border: rgba(106, 196, 190, 0.25);

  --troubleshoot-color: #f0a84a;

  --k9s-color:  #e8d44a;
  --k9s-glow:   rgba(232, 212, 74, 0.12);
  --k9s-border: rgba(232, 212, 74, 0.25);


  --success-color:  #5cb85c;

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

  /* Syntax highlighting */
  --hl-cmd:   #7b9ef5;   /* kubectl, helm */
  --hl-sub:   #e5c07b;   /* get, apply, create */
  --hl-res:   #98c379;   /* pods, nodes, services */
  --hl-flag:  #56b6c2;   /* --flag */
  --hl-ph:    #d19a66;   /* <placeholder> */
  --hl-val:   #8796aa;   /* values, misc */
  --hl-str:   #e06c75;   /* 'strings' */
  --hl-sep:   #5a6475;   /* -- | > */
}

/* ===== 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;
}

body {
  font-family: 'Space Grotesk', sans-serif;
  background: transparent;
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ===== 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: 6px;
  flex-shrink: 0;
  text-decoration: none;
  margin-top: 5px;
}

.logo-icon {
  width: 58px;
  height: 58px;
  flex-shrink: 0;
}

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

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: -0.4px;
  line-height: 1.2;
}

.logo-sub {
  font-size: 15px;
  color: var(--text-muted);
  letter-spacing: 0.2px;
  font-family: 'JetBrains Mono', monospace;
}

/* --- Search --- */
.search-container {
  position: absolute;
  left: 50%;
  top: calc(50% + 5px);
  transform: translateX(-50%) translateY(-50%);
  width: 464px;
  max-width: calc(100% - 360px);
}

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

.search-input {
  width: 100%;
  height: 44px;
  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: 0 0 0 3px var(--accent-glow);
}

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

.search-shortcut {
  position: absolute;
  right: 9px;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--text-muted);
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  pointer-events: none;
  transition: opacity 0.1s;
}

.search-input:focus ~ .search-shortcut,
.search-input:not(:placeholder-shown) ~ .search-shortcut {
  opacity: 0;
}

.search-count {
  position: absolute;
  right: 9px;
  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; }

/* ===== NAV ===== */
.nav {
  position: sticky;
  top: 68px;
  z-index: 90;
  background: rgba(17, 15, 31, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
}

.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; }

.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;
  white-space: nowrap;
}

.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 category buttons */
.top-workloads.active    { color: var(--hl-cmd);          background: rgba(123,158,245,0.10); border-color: rgba(123,158,245,0.25); }
.top-cluster.active      { color: var(--cluster-color);   background: var(--cluster-glow);    border-color: var(--cluster-border); }
.top-helm.active         { color: var(--helm-color);      background: var(--helm-glow);       border-color: var(--helm-border); }
.top-troubleshoot.active { color: var(--troubleshoot-color); background: rgba(240,168,74,0.10); border-color: rgba(240,168,74,0.28); }
.top-k9s.active          { color: var(--k9s-color);          background: var(--k9s-glow);        border-color: var(--k9s-border); }

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

/* Sub-nav row */
.nav-sub {
  top: 112px;
}

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

/* Sub-nav active button — matches active top category color */
#navSub[data-cat="workloads"]    .nav-btn.active { color: var(--hl-cmd);          background: rgba(123,158,245,0.10); border-color: rgba(123,158,245,0.25); }
#navSub[data-cat="cluster"]      .nav-btn.active { color: var(--cluster-color);   background: var(--cluster-glow);    border-color: var(--cluster-border); }
#navSub[data-cat="helm"]         .nav-btn.active { color: var(--helm-color);      background: var(--helm-glow);       border-color: var(--helm-border); }
#navSub[data-cat="troubleshoot"] .nav-btn.active { color: var(--troubleshoot-color); background: rgba(240,168,74,0.10); border-color: rgba(240,168,74,0.28); }
#navSub[data-cat="k9s"]          .nav-btn.active { color: var(--k9s-color);          background: var(--k9s-glow);        border-color: var(--k9s-border); }

/* ===== MAIN ===== */
.main {
  max-width: 1600px;
  margin: 0 auto;
  padding: 28px 12px 80px;
}

/* ===== SECTION ===== */
.section { margin-bottom: 44px; }
.section[hidden] { display: none; }

.section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  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="workloads"]    .section-header::after { background: linear-gradient(90deg, rgba(123,158,245,0.45) 0%, rgba(123,158,245,0.15) 55%, transparent 100%); }
.section[data-cat="cluster"]      .section-header::after { background: linear-gradient(90deg, rgba(106,196,190,0.45)  0%, rgba(106,196,190,0.15)  55%, transparent 100%); }
.section[data-cat="helm"]         .section-header::after { background: linear-gradient(90deg, rgba(240,200,238,0.45) 0%, rgba(240,200,238,0.15) 55%, transparent 100%); }
.section[data-cat="troubleshoot"] .section-header::after { background: linear-gradient(90deg, rgba(240,168,74,0.45)  0%, rgba(240,168,74,0.15)  55%, transparent 100%); }
.section[data-cat="k9s"]          .section-header::after { background: linear-gradient(90deg, rgba(232,212,74,0.45)  0%, rgba(232,212,74,0.15)  55%, 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="workloads"]    .section-icon { background: rgba(123,158,245,0.10); border-color: rgba(123,158,245,0.25); color: var(--hl-cmd); }
.section[data-cat="cluster"]      .section-icon { background: var(--cluster-glow);     border-color: var(--cluster-border);  color: var(--cluster-color); }
.section[data-cat="helm"]         .section-icon { background: var(--helm-glow);        border-color: var(--helm-border);     color: var(--helm-color); }
.section[data-cat="troubleshoot"] .section-icon { background: rgba(240,168,74,0.10);   border-color: rgba(240,168,74,0.28);  color: var(--troubleshoot-color); }
.section[data-cat="k9s"]          .section-icon { background: var(--k9s-glow);         border-color: var(--k9s-border);      color: var(--k9s-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;
}

/* Category-colored sub labels */
.section[data-cat="workloads"]    .section-sub { color: var(--hl-cmd);           opacity: 0.75; }
.section[data-cat="cluster"]      .section-sub { color: var(--cluster-color);    opacity: 0.75; }
.section[data-cat="helm"]         .section-sub { color: var(--helm-color);        opacity: 0.75; }
.section[data-cat="troubleshoot"] .section-sub { color: var(--troubleshoot-color); opacity: 0.75; }
.section[data-cat="k9s"]          .section-sub { color: var(--k9s-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 {
  border-color: rgba(224, 205, 255, 0.55);
  box-shadow: 0 0 0 1px rgba(224, 205, 255, 0.15), 0 8px 32px rgba(224, 205, 255, 0.12);
  transform: translateY(-2px);
}
.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="workloads"]    .card-desc::after { background: linear-gradient(90deg, transparent, rgba(123,158,245,0.25) 30%, rgba(123,158,245,0.25) 70%, transparent); }
.section[data-cat="cluster"]      .card-desc::after { background: linear-gradient(90deg, transparent, rgba(106,196,190,0.25)  30%, rgba(106,196,190,0.25)  70%, transparent); }
.section[data-cat="helm"]         .card-desc::after { background: linear-gradient(90deg, transparent, rgba(240,200,238,0.25) 30%, rgba(240,200,238,0.25) 70%, transparent); }
.section[data-cat="troubleshoot"] .card-desc::after { background: linear-gradient(90deg, transparent, rgba(240,168,74,0.20)  30%, rgba(240,168,74,0.20)  70%, transparent); }
.section[data-cat="k9s"]          .card-desc::after { background: linear-gradient(90deg, transparent, rgba(232,212,74,0.22)  30%, rgba(232,212,74,0.22)  70%, transparent); }

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

.cmd-item {
  position: relative;
  padding: 8px 40px 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="workloads"]    .cmd-item:hover { border-left-color: var(--hl-cmd); }
.section[data-cat="cluster"]      .cmd-item:hover { border-left-color: var(--cluster-color); }
.section[data-cat="helm"]         .cmd-item:hover { border-left-color: var(--helm-color); }
.section[data-cat="troubleshoot"] .cmd-item:hover { border-left-color: var(--troubleshoot-color); }
.section[data-cat="k9s"]          .cmd-item:hover { border-left-color: var(--k9s-color); }

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

.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;
  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;
}

/* ===== 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-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;
  }
}

@media (max-width: 680px) {
  .logo-sub { display: none; }
  .search-container { max-width: none; }
  .header-inner { padding: 0 14px; gap: 12px; }
  .nav-inner { padding: 0 14px; }
  .main { padding: 18px 14px 80px; }
  .cards-grid { grid-template-columns: 1fr; }
}

@media (hover: none) {
  .copy-btn { opacity: 0.7; }
}

@media (max-width: 400px) {
  .logo-text { display: none; }
  .logo-icon { width: 26px; height: 26px; }
}

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

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

  .main { padding: 0; max-width: 100%; }
  .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; }
}