/* ═══════════════════════════════════════════════════════════════════════════
   DNS Panopticon — Support Hub
   Page-specific styles for the support hub (public/support/index.html).
   Uses tokens from tokens.css for full theme + dark-mode integration.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Page wrapper ──────────────────────────────────────────────────────── */
.support-page {
  flex: 1;
  width: min(calc(var(--page-max) - 48px), calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 80px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ── Shared section heads ──────────────────────────────────────────────── */
.support-section-head {
  margin-bottom: 28px;
  max-width: 60ch;
}
.support-section-head--with-action {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  max-width: none;
  flex-wrap: wrap;
}
.support-section-head--with-action > div { max-width: 60ch; }

.section-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin: 0 0 10px;
}

.support-section-head h2 {
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--txt);
  margin: 0 0 10px;
  font-weight: 700;
}

.support-section-sub {
  font-size: 15px;
  line-height: 1.7;
  color: var(--txt-3);
  margin: 0;
}

/* ── HERO ──────────────────────────────────────────────────────────────── */
.support-hero {
  position: relative;
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 55% 70% at 80% 0%, color-mix(in srgb, var(--primary) 8%, transparent) 0%, transparent 70%);
}

.support-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: 56px;
  align-items: center;
}

.support-hero h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  color: var(--txt);
  margin: 0 0 18px;
  font-weight: 800;
}

.support-hero-accent {
  color: var(--primary-ink);
}

.support-hero-lede {
  font-size: var(--text-body);
  line-height: 1.7;
  color: var(--txt-3);
  margin: 0 0 28px;
  max-width: 56ch;
}

/* Instant results panel under the hero search */
.support-search-results {
  position: absolute;
  top: calc(100% + 6px);
  left: 0; right: 0;
  z-index: 160;
  display: flex;
  flex-direction: column;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  box-shadow: 0 18px 44px color-mix(in srgb, var(--txt) 14%, transparent);
  max-height: min(420px, 60vh);
  overflow-y: auto;
}
.support-search-results[hidden] { display: none; }
.support-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--txt);
}
.support-result strong {
  font-size: var(--text-small);
  font-weight: 600;
  min-width: 0;
}
.support-result-topic {
  flex: none;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--topic-accent, var(--primary)) 70%, var(--txt));
  background: color-mix(in srgb, var(--topic-accent, var(--primary)) 10%, transparent);
  border-radius: 999px;
  padding: 3px 9px;
  white-space: nowrap;
  max-width: 45%;
  overflow: hidden;
  text-overflow: ellipsis;
}
.support-result:hover,
.support-result.is-active,
.support-result-more:hover,
.support-result-more.is-active {
  background: color-mix(in srgb, var(--primary) 8%, var(--surface));
}
.support-result-more {
  border: none;
  border-top: 1px solid var(--border);
  margin-top: 4px;
  padding: 10px 12px;
  background: transparent;
  color: var(--primary-ink);
  font: inherit;
  font-size: var(--text-caption);
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  border-radius: 0 0 8px 8px;
}
.support-result-empty {
  margin: 0;
  padding: 10px 12px;
  font-size: var(--text-caption);
  color: var(--txt-3);
}

/* Topic accents shared by the index group titles and the result tags */
[data-group="product-guides"]   { --topic-accent: var(--primary); }
[data-group="fundamentals"]     { --topic-accent: var(--green); }
[data-group="failure-modes"]    { --topic-accent: var(--amber); }
[data-group="security"]         { --topic-accent: var(--red); }
[data-group="records-advanced"] { --topic-accent: #7c3aed; }
[data-group="playbooks"]        { --topic-accent: #0891b2; }
[data-group="tools"]            { --topic-accent: #ea580c; }
[data-group="architecture"]     { --topic-accent: #9333ea; }
[data-group="comparisons"]      { --topic-accent: var(--txt-3); }
[data-group="networking"]       { --topic-accent: #0d9488; }
[data-group="zero-trust"]       { --topic-accent: #4f46e5; }
[data-group="website-security"] { --topic-accent: #be185d; }

/* Hero search */
.support-hero-search {
  position: relative;
  display: flex;
  align-items: center;
  margin: 0 0 6px;
}
.support-hero-search-icon {
  position: absolute;
  left: 16px;
  display: flex;
  width: 18px; height: 18px;
  color: var(--txt-4);
  pointer-events: none;
}
#support-search-input {
  width: 100%;
  padding: 14px 80px 14px 46px;
  font-size: 15px;
  color: var(--txt);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  outline: none;
  font-family: inherit;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--primary) 6%, transparent);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  -webkit-appearance: none;
}
#support-search-input::placeholder { color: var(--txt-4); }
/* The page draws its own clear button; hide the browser's second one. */
#support-search-input::-webkit-search-cancel-button { -webkit-appearance: none; appearance: none; }
#support-search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 14%, transparent),
              0 4px 14px color-mix(in srgb, var(--primary) 10%, transparent);
}

.search-clear {
  position: absolute;
  right: 48px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--txt-4);
  display: flex;
  border-radius: 4px;
}
.search-clear:hover { color: var(--txt); background: var(--surface2); }
.search-clear svg { width: 12px; height: 12px; }

.search-kbd {
  position: absolute;
  right: 14px;
  font-size: 11px;
  color: var(--txt-4);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 7px;
  pointer-events: none;
  font-family: inherit;
}
#support-search-input:not(:placeholder-shown) ~ .search-kbd { opacity: 0; }

.support-search-hint {
  font-size: var(--text-caption);
  color: var(--txt-4);
  margin: 8px 0 0;
  min-height: 1.4em;
}

/* Suggestion chips */
.support-hero-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  align-items: center;
}
.support-hero-suggestions-label {
  font-size: var(--text-caption);
  color: var(--txt-4);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-right: 4px;
}
.suggestion-chip {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--txt-2);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: var(--text-caption);
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.suggestion-chip:hover {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
  background: color-mix(in srgb, var(--primary) 6%, var(--surface));
}

/* Hero illustration */
.support-hero-art {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-art-svg {
  width: 100%;
  max-width: 380px;
  height: auto;
}
.hero-art-rings { transform-origin: 180px 180px; animation: hero-rings-spin 60s linear infinite; }
.hero-art-eye   { transform-origin: 180px 180px; animation: hero-eye-pulse 4s ease-in-out infinite; }
.hero-art-chip  { transform-origin: 180px 180px; animation: hero-chip-float 6s ease-in-out infinite; }
.hero-art-chip--mx    { animation-delay: -1.0s; }
.hero-art-chip--txt   { animation-delay: -2.0s; }
.hero-art-chip--ns    { animation-delay: -3.0s; }
.hero-art-chip--cname { animation-delay: -4.0s; }
.hero-art-chip--aaaa  { animation-delay: -5.0s; }
@keyframes hero-rings-spin { to { transform: rotate(360deg); } }
@keyframes hero-eye-pulse {
  0%,100% { transform: scale(1); }
  50%     { transform: scale(1.06); }
}
@keyframes hero-chip-float {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-4px); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-art-rings, .hero-art-eye, .hero-art-chip { animation: none !important; }
}

/* ── STATS BAND ────────────────────────────────────────────────────────── */
.support-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  margin: 32px 0 0;
  overflow: hidden;
  box-shadow: 0 2px 12px color-mix(in srgb, var(--primary) 4%, transparent);
}
.support-stat {
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-right: 1px solid var(--border);
}
.support-stat:last-child { border-right: none; }
.support-stat-num {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--txt);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.support-stat-num--word {
  color: var(--primary-ink);
}
.support-stat-label {
  font-size: var(--text-caption);
  color: var(--txt-3);
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* Section spacing common to all blocks */
.support-featured-tools,
.support-popular,
.support-cheatsheet,
.support-categories,
.support-toc-section {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}

/* ── JUMP BAR ──────────────────────────────────────────────────────────── */
/* Sticks under the site header; the hero's search and every section stay
   one click away however far down the page the reader is. */
.support-jump {
  position: sticky;
  top: var(--nav-height);
  z-index: 150;
  margin: 24px 0 0;
  padding: 10px 0;
  transition: background var(--t-fast), box-shadow var(--t-fast);
}
.support-jump.is-stuck {
  background: color-mix(in srgb, var(--bg) 95%, transparent);
  -webkit-backdrop-filter: saturate(1.6) blur(12px);
  backdrop-filter: saturate(1.6) blur(12px);
  box-shadow: 0 1px 0 var(--border), 0 0 0 100vmax color-mix(in srgb, var(--bg) 95%, transparent);
  clip-path: inset(0 -100vmax -1px);
}
.support-jump-sentinel { height: 0; }
.support-jump-inner {
  display: flex;
  align-items: center;
  gap: 10px;
}
.support-jump-search,
.support-jump-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--txt-2);
  font: inherit;
  font-size: var(--text-caption);
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.support-jump-search {
  color: var(--primary-ink);
  border-color: color-mix(in srgb, var(--primary) 35%, var(--border));
}
.support-jump-search svg { width: 14px; height: 14px; }
.support-jump-links {
  position: relative;
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}
.support-jump-links::-webkit-scrollbar { display: none; }
.support-jump-link--tools      { --jump-accent: var(--primary); }
.support-jump-link--playbooks  { --jump-accent: #0891b2; }
.support-jump-link--cheatsheet { --jump-accent: #7c3aed; }
.support-jump-link--topics     { --jump-accent: var(--green); }
.support-jump-link--index      { --jump-accent: var(--amber); }
.support-jump-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--jump-accent);
  flex: none;
}
.support-jump-search:hover,
.support-jump-link:hover {
  color: var(--txt);
  border-color: color-mix(in srgb, var(--jump-accent, var(--primary)) 50%, var(--border));
}
.support-jump-link[aria-current="true"] {
  color: var(--txt);
  border-color: var(--jump-accent);
  background: color-mix(in srgb, var(--jump-accent) 10%, var(--surface));
}

/* Anchored sections land below the header and the jump bar. */
.support-featured-tools,
.support-popular,
.support-cheatsheet,
.support-categories,
.support-toc-section {
  scroll-margin-top: calc(var(--nav-height) + 64px);
}

/* Back to top, shown once the jump bar has stuck */
.support-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 140;
  width: 44px; height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--txt-2);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--primary) 18%, transparent);
  transition: color var(--t-fast), border-color var(--t-fast);
}
.support-top[hidden] { display: none; }
.support-top:hover { color: var(--primary); border-color: var(--primary); }
.support-top svg { width: 16px; height: 16px; }

.playbook-body { display: flex; flex-direction: column; gap: 6px; }
.playbook-body h3 {
  font-size: var(--text-body);
  font-weight: 700;
  color: var(--txt);
  margin: 0;
  letter-spacing: -0.01em;
}
.playbook-body p {
  font-size: var(--text-compact);
  line-height: 1.6;
  color: var(--txt-3);
  margin: 0;
}

/* ── FEATURED TOOL CARDS ──────────────────────────────────────────────── */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  text-decoration: none;
  overflow: hidden;
  transition: transform var(--t-base), box-shadow var(--t-base), border-color var(--t-fast);
}
.tool-card:hover {
  box-shadow: 0 16px 40px color-mix(in srgb, var(--tool-accent, var(--primary)) 22%, transparent);
  border-color: color-mix(in srgb, var(--tool-accent, var(--primary)) 45%, var(--border));
}
.tool-card--visualizer { --tool-accent: var(--primary); }
.tool-card--recon    { --tool-accent: var(--rtype-cname-fg); }
.tool-card--market   { --tool-accent: var(--green); }
.tool-card--analyzer { --tool-accent: var(--rtype-mx-fg); }

.tool-card-art {
  position: relative;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--tool-accent) 8%, var(--surface2)) 0%, var(--surface) 100%);
  border-bottom: 1px solid var(--border);
  padding: 14px 14px 0;
}
.tool-card-art svg {
  width: 100%;
  height: auto;
  display: block;
}
.tool-card-body { padding: 18px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.tool-card-cta { margin-top: auto; }
.tool-card-tag {
  display: inline-flex;
  align-self: flex-start;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  /* Pulled toward the body text colour so the tag clears 4.5:1 in both themes. */
  color: color-mix(in srgb, var(--tool-accent) 65%, var(--txt));
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--tool-accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--tool-accent) 25%, transparent);
}
.tool-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--txt);
  margin: 4px 0 0;
  letter-spacing: -0.015em;
}
.tool-card-body p {
  font-size: var(--text-small);
  color: var(--txt-3);
  line-height: 1.6;
  margin: 0;
}
.tool-card-cta {
  font-size: var(--text-compact);
  font-weight: 600;
  color: color-mix(in srgb, var(--tool-accent) 65%, var(--txt));
  margin-top: 4px;
  display: inline-flex;
  gap: 4px;
  align-items: center;
}
.tool-card:hover .tool-card-cta span { transform: translateX(3px); transition: transform var(--t-fast); }

/* ── PLAYBOOK CARDS ────────────────────────────────────────────────────── */
.playbook-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.playbook-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  text-decoration: none;
  position: relative;
  transition: transform var(--t-base), box-shadow var(--t-base), border-color var(--t-fast);
}
.playbook-card:hover {
  box-shadow: 0 12px 28px color-mix(in srgb, var(--primary) 14%, transparent);
  border-color: color-mix(in srgb, var(--primary) 35%, var(--border));
}
.playbook-num {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--primary-ink);
  font-variant-numeric: tabular-nums;
  align-self: flex-start;
  line-height: 1;
}
.playbook-cta {
  margin-top: 6px;
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  gap: 4px;
  align-items: center;
}
.playbook-card:hover .playbook-cta span { transform: translateX(3px); transition: transform var(--t-fast); }

/* ── CHEAT-SHEET ───────────────────────────────────────────────────────── */
.cheatsheet-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 20px;
}
.cheatsheet-records,
.cheatsheet-commands {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  padding: 22px 24px;
  position: relative;
  overflow: hidden;
}

.cheatsheet-subtitle {
  font-size: var(--text-small);
  font-weight: 700;
  color: var(--txt);
  margin: 0 0 16px;
  letter-spacing: -0.005em;
}
.cheatsheet-subtitle code {
  font-family: var(--font-mono);
  font-size: var(--text-compact);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--primary-ink);
}

.record-list {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  gap: 8px;
}
.record-list li {
  display: grid;
  grid-template-columns: 60px 1fr;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
}
.record-list li:last-child { border-bottom: none; }
.rtype-chip {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  letter-spacing: 0.03em;
}
.rtype-chip--a     { color: var(--rtype-a-fg);     background: var(--rtype-a-bg); }
.rtype-chip--aaaa  { color: var(--rtype-aaaa-fg);  background: var(--rtype-aaaa-bg); }
.rtype-chip--cname { color: var(--rtype-cname-fg); background: var(--rtype-cname-bg); }
.rtype-chip--mx    { color: var(--rtype-mx-fg);    background: var(--rtype-mx-bg); }
.rtype-chip--ns    { color: var(--rtype-ns-fg);    background: var(--rtype-ns-bg); }
.rtype-chip--txt   { color: var(--rtype-txt-fg);   background: var(--rtype-txt-bg); }
.rtype-chip--soa   { color: var(--rtype-soa-fg);   background: var(--rtype-soa-bg); }
.rtype-chip--srv   { color: var(--rtype-srv-fg);   background: var(--rtype-srv-bg); }
.rtype-chip--ptr   { color: var(--rtype-ptr-fg);   background: var(--rtype-ptr-bg); }
.rtype-desc {
  font-size: var(--text-compact);
  color: var(--txt-3);
  line-height: 1.5;
}

.command-list {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  gap: 10px;
  counter-reset: cmd;
}
.command-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.command-line {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-compact);
  color: var(--txt);
  background: color-mix(in srgb, var(--surface2) 70%, var(--surface));
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 12px;
  white-space: pre;
  overflow-x: auto;
}
.cmd-prompt { color: var(--primary); margin-right: 8px; user-select: none; }
.command-desc {
  font-size: var(--text-caption);
  color: var(--txt-3);
  padding-left: 4px;
}

.cheatsheet-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: var(--text-compact);
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
}
.cheatsheet-link:hover { color: var(--primary-dk); }
.cheatsheet-link:hover span { transform: translateX(3px); transition: transform var(--t-fast); }

/* ── CATEGORY GRID ─────────────────────────────────────────────────────── */
.cat-reset {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--txt-2);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: var(--text-caption);
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.cat-reset:hover,
.cat-reset.is-active {
  color: var(--primary-ink);
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 8%, var(--surface));
}

.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.cat-card {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr auto;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 4px 14px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  text-decoration: none;
  transition: transform var(--t-fast), box-shadow var(--t-base), border-color var(--t-fast);
}
.cat-card:hover {
  border-color: color-mix(in srgb, var(--cat-accent, var(--primary)) 50%, var(--border));
  box-shadow: 0 10px 24px color-mix(in srgb, var(--cat-accent, var(--primary)) 16%, transparent);
}
.cat-card.is-active {
  border-color: var(--cat-accent, var(--primary));
  background: color-mix(in srgb, var(--cat-accent, var(--primary)) 6%, var(--surface));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--cat-accent, var(--primary)) 18%, transparent);
}
.cat-card--product       { --cat-accent: var(--primary); }
.cat-card--fundamentals  { --cat-accent: var(--green); }
.cat-card--failure       { --cat-accent: var(--amber); }
.cat-card--security      { --cat-accent: var(--red); }
.cat-card--records       { --cat-accent: #7c3aed; }
.cat-card--playbooks     { --cat-accent: #0891b2; }
.cat-card--tools         { --cat-accent: #ea580c; }
.cat-card--architecture  { --cat-accent: #9333ea; }
.cat-card--comparisons   { --cat-accent: var(--txt-3); }
.cat-card--networking    { --cat-accent: #0d9488; }
.cat-card--zero-trust    { --cat-accent: #4f46e5; }
.cat-card--website-security { --cat-accent: #be185d; }

.cat-icon {
  grid-row: 1 / span 2;
  width: 44px; height: 44px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-control);
  color: var(--cat-accent);
  background: color-mix(in srgb, var(--cat-accent) 12%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--cat-accent) 22%, var(--border));
}
.cat-icon svg { width: 26px; height: 26px; }

.cat-card h3 {
  grid-column: 2;
  grid-row: 1;
  font-size: var(--text-small);
  font-weight: 700;
  color: var(--txt);
  margin: 0;
  letter-spacing: -0.005em;
}
.cat-card p {
  grid-column: 2;
  grid-row: 2;
  font-size: var(--text-caption);
  color: var(--txt-3);
  line-height: 1.5;
  margin: 0;
}

/* ── FULL TOC ──────────────────────────────────────────────────────────── */
.support-toc-section { display: flex; flex-direction: column; gap: 32px; }
.support-toc-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.support-groups-toggle-all {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--txt-3);
  border-radius: 8px;
  padding: 9px 14px;
  font-size: var(--text-caption);
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.support-groups-toggle-all:hover {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}

.support-toc { display: flex; flex-direction: column; }
.support-toc-group {
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.support-toc-group:first-child { border-top: none; padding-top: 0; }

.support-toc-group-title {
  font-size: 18px;
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--txt-3);
  margin: 0 0 16px;
}
.support-group-toggle {
  width: 100%;
  border: none;
  background: transparent;
  color: inherit;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0;
  cursor: pointer;
  text-align: left;
  font: inherit;
}
.support-group-toggle-label { display: inline-flex; align-items: center; gap: 10px; }
.support-group-toggle-label::before {
  content: "";
  width: 10px; height: 10px;
  border-radius: 3px;
  background: var(--topic-accent, var(--primary));
  flex: none;
}
.support-toc-group.is-collapsed { padding: 18px 0; }
.support-toc-group.is-collapsed .support-toc-group-title { margin-bottom: 0; }
.support-toc-group:first-child.is-collapsed { padding-top: 0; }
.support-group-chevron { color: var(--txt-4); transition: transform var(--t-fast); }
.support-toc-group.is-collapsed .support-group-chevron { transform: rotate(-90deg); }
.support-toc-group.is-collapsed .article-list { display: none; }

[data-group="product-guides"]   .support-toc-group-title { color: var(--primary); }
[data-group="fundamentals"]     .support-toc-group-title { color: var(--green); }
[data-group="failure-modes"]    .support-toc-group-title { color: var(--amber); }
[data-group="security"]         .support-toc-group-title { color: var(--red); }
[data-group="records-advanced"] .support-toc-group-title { color: #7c3aed; }
[data-group="playbooks"]        .support-toc-group-title { color: color-mix(in srgb, #0891b2 70%, var(--txt)); }
[data-group="tools"]            .support-toc-group-title { color: color-mix(in srgb, #ea580c 70%, var(--txt)); }
[data-group="architecture"]     .support-toc-group-title { color: #9333ea; }
[data-group="comparisons"]      .support-toc-group-title { color: var(--txt-3); }
[data-group="networking"]       .support-toc-group-title { color: color-mix(in srgb, #0d9488 75%, var(--txt)); }
[data-group="zero-trust"]       .support-toc-group-title { color: #4f46e5; }
[data-group="website-security"] .support-toc-group-title { color: #be185d; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) [data-group="records-advanced"] .support-toc-group-title { color: #a78bfa; }
  :root:not([data-theme="light"]) [data-group="playbooks"]        .support-toc-group-title { color: color-mix(in srgb, #22d3ee 70%, var(--txt)); }
  :root:not([data-theme="light"]) [data-group="tools"]            .support-toc-group-title { color: color-mix(in srgb, #fb923c 70%, var(--txt)); }
  :root:not([data-theme="light"]) [data-group="architecture"]     .support-toc-group-title { color: #c084fc; }
  :root:not([data-theme="light"]) [data-group="zero-trust"]       .support-toc-group-title { color: #818cf8; }
  :root:not([data-theme="light"]) [data-group="website-security"] .support-toc-group-title { color: #f472b6; }
}
[data-theme="dark"] [data-group="records-advanced"] .support-toc-group-title { color: #a78bfa; }
[data-theme="dark"] [data-group="playbooks"]        .support-toc-group-title { color: color-mix(in srgb, #22d3ee 70%, var(--txt)); }
[data-theme="dark"] [data-group="tools"]            .support-toc-group-title { color: color-mix(in srgb, #fb923c 70%, var(--txt)); }
[data-theme="dark"] [data-group="architecture"]     .support-toc-group-title { color: #c084fc; }
[data-theme="dark"] [data-group="zero-trust"]       .support-toc-group-title { color: #818cf8; }
[data-theme="dark"] [data-group="website-security"] .support-toc-group-title { color: #f472b6; }

.article-list { display: flex; flex-direction: column; }
.article-list-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: padding var(--t-fast);
}
.article-list-item:last-child { border-bottom: none; }
.article-list-item:hover { padding-left: 6px; }
.article-list-item strong {
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--txt);
  display: block;
  transition: color var(--t-fast);
}
.article-list-item:hover strong { color: var(--primary); }
.article-list-item p {
  font-size: var(--text-compact);
  color: var(--txt-3);
  line-height: 1.55;
  margin: 4px 0 0;
}
.article-list-item span[aria-hidden="true"] {
  color: var(--txt-4);
  font-size: var(--text-small);
  transition: color var(--t-fast), transform var(--t-fast);
}
.article-list-item:hover span[aria-hidden="true"] {
  color: var(--primary);
  transform: translateX(3px);
}

.article-list--toc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 36px;
}
.article-list--toc-grid .article-list-item {
  border-bottom: none;
  border-top: 1px solid var(--border);
  padding-top: 13px;
  padding-bottom: 13px;
}
.article-list--toc-grid .article-list-item:nth-child(-n+2) {
  border-top: none;
  padding-top: 0;
}

.search-no-results {
  font-size: var(--text-small);
  color: var(--txt-4);
  padding: 24px 0 0;
}
.search-reset-inline {
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  color: var(--primary);
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.search-reset-inline:hover { color: var(--primary-dk); }

/* ── CONTACT ───────────────────────────────────────────────────────────── */
.support-contact {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 36px 28px;
  margin-top: 56px;
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--border));
  border-radius: var(--radius-card);
  background:
    radial-gradient(ellipse at top right, color-mix(in srgb, var(--primary) 12%, transparent) 0%, transparent 60%),
    var(--surface);
}
.support-contact-art {
  width: 56px; height: 56px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-control);
  background: color-mix(in srgb, var(--primary) 10%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--border));
}
.support-contact-art svg { width: 36px; height: 36px; }
.support-contact-copy h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--txt);
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.support-contact-copy p {
  font-size: var(--text-compact);
  line-height: 1.6;
  color: var(--txt-3);
  margin: 0;
}
.support-contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: var(--radius-control);
  background: var(--primary-fill);
  color: #fff;
  font-weight: 600;
  font-size: var(--text-small);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
}
.support-contact-link:hover {
  background: var(--primary-dk);
  box-shadow: 0 8px 22px color-mix(in srgb, var(--primary) 35%, transparent);
}

/* ── RESPONSIVE ────────────────────────────────────────────────────────── */
@media (max-width: 1080px) {
  .tool-grid     { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .playbook-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cat-grid    { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .support-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .support-stat:nth-child(2) { border-right: none; }
  .support-stat:nth-child(1),
  .support-stat:nth-child(2) { border-bottom: 1px solid var(--border); }
}
@media (max-width: 960px) {
  .support-page { width: min(100%, calc(100% - 40px)); }
  .support-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .support-hero-art { order: -1; max-width: 280px; margin: 0 auto; }
  .cheatsheet-grid { grid-template-columns: 1fr; }
  .support-contact {
    grid-template-columns: 1fr;
    text-align: left;
    gap: 16px;
  }
  .support-contact-link { width: 100%; }
}
@media (max-width: 640px) {
  .support-page { width: min(100%, calc(100% - 32px)); padding-bottom: 60px; }
  .support-hero { padding: 36px 0 32px; }
  .cat-grid     { grid-template-columns: 1fr; }
  .support-stat { padding: 16px 18px; }
  .support-stat-num { font-size: 26px; }
  .support-featured-tools,
  .support-popular,
  .support-cheatsheet,
  .support-categories,
  .support-toc-section { padding: 40px 0; }
  /* Tool and playbook cards swipe sideways instead of stacking */
  .tool-grid,
  .playbook-grid {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    margin: 0 -16px;
    padding: 4px 16px 12px;
    scroll-padding: 0 16px;
  }
  .tool-card,
  .playbook-card {
    flex: 0 0 82%;
    scroll-snap-align: start;
  }
  .support-jump-search span { display: none; }
  .support-jump-search { padding: 8px 11px; }
  .support-top { right: 16px; bottom: 16px; }
  .article-list--toc-grid { grid-template-columns: 1fr; }
  .article-list--toc-grid .article-list-item:nth-child(-n+2) {
    border-top: 1px solid var(--border);
    padding-top: 13px;
  }
  .article-list--toc-grid .article-list-item:first-child {
    border-top: none;
    padding-top: 0;
  }
  .search-kbd { display: none; }
  #support-search-input { padding-right: 50px; }
  .search-clear { right: 14px; }
}