/* ════════════════════════════════════════════════════════════════════
   KNOWLEDGEBASE PAGE
   Uses tokens from index.css: --bg, --bg-elev, --bg-elev-2, --bg-elev-3,
   --line, --line-strong, --ink, --ink-2, --ink-3, --ink-4, --accent,
   --accent-deep, --accent-soft, --accent-ink, --info, --info-soft, --warn,
   --warn-soft, --danger, --danger-soft, --font-display, --font-body,
   --font-mono
   ════════════════════════════════════════════════════════════════════ */

.kb-layout {
  padding: 40px 0 80px;
}

/* ═══════════════════ HERO ═══════════════════ */
.kb-hero {
  text-align: center;
  padding: 40px 0 56px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--line);
}

.kb-hero-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 14px;
}

.kb-h1 {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ink);
  margin: 0 0 14px;
}

@media (max-width: 640px) {
  .kb-h1 { font-size: 32px; }
}

.kb-hero-sub {
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 560px;
  margin: 0 auto 32px;
}

/* Big search */
.kb-search {
  position: relative;
  max-width: 580px;
  margin: 0 auto 18px;
}

.kb-search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 18px;
  pointer-events: none;
}

.kb-search input {
  width: 100%;
  padding: 16px 50px 16px 48px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}

.kb-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.kb-search-clear {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--ink-3);
  cursor: pointer;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  display: none;
}

.kb-search-clear.visible {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.kb-search-clear:hover { color: var(--ink); }

/* Suggestion chips */
.kb-suggestions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
}

.kb-suggest-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: 2px;
}

.kb-chip {
  padding: 5px 12px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-2);
  font-family: var(--font-body);
  font-size: 12.5px;
  cursor: pointer;
  transition: all .15s ease;
}

.kb-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* Stats row */
.kb-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg-elev);
  overflow: hidden;
}

@media (max-width: 640px) {
  .kb-stats { grid-template-columns: repeat(2, 1fr); }
  .kb-stat:nth-child(1), .kb-stat:nth-child(2) {
    border-bottom: 1px solid var(--line);
  }
}

.kb-stat {
  padding: 18px 14px;
  text-align: center;
  border-right: 1px solid var(--line);
}

.kb-stat:last-child { border-right: none; }

@media (max-width: 640px) {
  .kb-stat:nth-child(2) { border-right: none; }
}

.kb-stat-value {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}

.kb-stat-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}

/* ═══════════════════ CATEGORY OVERVIEW GRID ═══════════════════ */
.kb-overview {
  margin-bottom: 64px;
}

.kb-section-head {
  margin-bottom: 24px;
}

.kb-section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 6px;
}

.kb-section-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0;
}

.kb-cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

@media (max-width: 1024px) {
  .kb-cat-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .kb-cat-grid { grid-template-columns: 1fr; }
}

.kb-cat-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 4px;
  text-decoration: none;
  transition: all .15s ease;
}

.kb-cat-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  background: var(--bg-elev-2);
}

.kb-cat-mark {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}

.kb-cat-body {
  flex: 1;
  min-width: 0;
}

.kb-cat-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.005em;
  line-height: 1.3;
  margin-bottom: 2px;
}

.kb-cat-count {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

.kb-cat-arrow {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-3);
  flex-shrink: 0;
}

.kb-cat-card:hover .kb-cat-arrow {
  color: var(--accent);
}

/* ═══════════════════ EXPANDABLE CATEGORY SECTIONS ═══════════════════ */
.kb-categories {
  margin-bottom: 64px;
}

.kb-cat-section {
  margin-bottom: 12px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color .15s ease;
}

.kb-cat-section:hover {
  border-color: var(--line-strong);
}

.kb-cat-section.open {
  border-color: var(--accent);
}

.kb-cat-section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 18px 22px;
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: background .12s ease;
}

.kb-cat-section-head:hover {
  background: var(--bg-elev-2);
}

.kb-cat-section.open .kb-cat-section-head {
  background: var(--bg-elev-2);
  border-bottom: 1px solid var(--line);
}

.kb-cat-section-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}

.kb-cat-section-body {
  flex: 1;
  min-width: 0;
}

.kb-cat-section-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.005em;
  line-height: 1.3;
  margin-bottom: 2px;
}

.kb-cat-section-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

.kb-cat-section-chev {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-3);
  transition: transform .2s ease, color .15s ease;
}

.kb-cat-section.open .kb-cat-section-chev {
  transform: rotate(180deg);
  color: var(--accent);
}

.kb-cat-section-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}

.kb-cat-section.open .kb-cat-section-content {
  max-height: 8000px;
}

.kb-cat-section-inner {
  padding: 18px 22px 22px;
}

/* Sub-group header (e.g. "Getting Started & Core Setup") */
.kb-subgroup {
  margin-top: 18px;
}

.kb-subgroup:first-child {
  margin-top: 0;
}

.kb-subgroup-title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 0 0 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

/* Article list inside subgroup */
.kb-article-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px 18px;
}

@media (max-width: 768px) {
  .kb-article-list { grid-template-columns: 1fr; }
}

.kb-article-list li {
  margin: 0;
}

.kb-article-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--ink-2);
  text-decoration: none;
  transition: color .12s ease;
}

.kb-article-link:hover {
  color: var(--accent);
}

.kb-article-link::before {
  content: '→';
  flex-shrink: 0;
  color: var(--ink-4);
  font-family: var(--font-mono);
  font-size: 11px;
  transition: color .12s ease;
}

.kb-article-link:hover::before {
  color: var(--accent);
}

/* No results */
.kb-no-results {
  display: none;
  text-align: center;
  padding: 48px 20px;
  background: var(--bg-elev);
  border: 1px dashed var(--line);
  border-radius: 4px;
}

.kb-no-results.visible { display: block; }

.kb-no-results-icon {
  font-family: var(--font-mono);
  font-size: 32px;
  color: var(--ink-4);
  margin-bottom: 12px;
  display: block;
}

.kb-no-results strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.kb-no-results span {
  color: var(--ink-3);
  font-size: 13.5px;
}

/* ═══════════════════ SUPPORT TICKET FORM ═══════════════════ */
.kb-support {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 36px;
  margin-top: 64px;
}

@media (max-width: 640px) {
  .kb-support { padding: 24px; }
}

.kb-support-head {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.kb-support-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 8px;
}

.kb-support-title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0 0 10px;
}

.kb-support-sub {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 540px;
  margin: 0 auto;
}

/* Form */
.kb-form {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr 1fr;
}

.kb-form-row.full { grid-column: 1 / -1; }

@media (max-width: 640px) {
  .kb-form { grid-template-columns: 1fr; }
}

.kb-form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.kb-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}

.kb-label-req {
  color: var(--accent);
  margin-left: 2px;
}

.kb-input,
.kb-select,
.kb-textarea {
  width: 100%;
  padding: 11px 13px;
  background: var(--bg-elev-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}

.kb-input:focus,
.kb-select:focus,
.kb-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.kb-textarea {
  resize: vertical;
  min-height: 120px;
  font-family: var(--font-body);
  line-height: 1.55;
}

.kb-select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1.5L6 6.5L11 1.5' stroke='%236b6b67' stroke-width='1.5' fill='none' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

/* Priority radio group */
.kb-priority-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.kb-priority {
  flex: 1;
  min-width: 100px;
  position: relative;
}

.kb-priority input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.kb-priority label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 12px;
  background: var(--bg-elev-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink-2);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all .12s ease;
  text-align: center;
}

.kb-priority label::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-4);
  flex-shrink: 0;
}

.kb-priority[data-level="low"] label::before    { background: var(--accent); }
.kb-priority[data-level="medium"] label::before { background: var(--warn); }
.kb-priority[data-level="high"] label::before   { background: var(--danger); }

.kb-priority input:checked + label {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--ink);
  font-weight: 600;
}

.kb-priority label:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.kb-form-foot {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.kb-form-note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
}

.kb-form-note strong {
  color: var(--accent);
  font-weight: 700;
}

/* Success state */
.kb-success {
  display: none;
  text-align: center;
  padding: 48px 24px;
  background: var(--accent-soft);
  border: 1px solid var(--line-accent);
  border-radius: 4px;
}

.kb-success.visible { display: block; }

.kb-success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
}

.kb-success-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 10px;
}

.kb-success-body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 480px;
  margin: 0 auto;
}