/* ═══════════════════════════════════════════════════════════════
   SOMMA Knowledge Base — Sistema de documentación en-app
   css/ps-knowledge.css
   ═══════════════════════════════════════════════════════════════ */

/* ── FAB (Floating Action Button) ──────────────────────────── */
#kb-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--ps-red, #E5382B);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(229,56,43,.35);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .2s, box-shadow .2s;
}
#kb-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(229,56,43,.45);
}
#kb-fab:active {
  transform: scale(0.95);
}
#kb-fab svg { display: block; }

/* ── Overlay ───────────────────────────────────────────────── */
#kb-overlay {
  position: fixed;
  inset: 0;
  z-index: 998;
  background: rgba(0,0,0,.35);
  opacity: 0;
  transition: opacity .25s;
  pointer-events: none;
}
#kb-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

/* ── Panel (slide-out drawer) ──────────────────────────────── */
#kb-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  width: 480px;
  max-width: 100vw;
  background: var(--bg-surface, #101320);
  border-left: 1px solid var(--border, rgba(255,255,255,.10));
  box-shadow: -8px 0 32px rgba(0,0,0,.3);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
  overflow: hidden;
}
#kb-panel.open { transform: translateX(0); }

/* ── Panel Header ──────────────────────────────────────────── */
.kb-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 16px 12px;
  border-bottom: 1px solid var(--border, rgba(255,255,255,.10));
  flex-shrink: 0;
}
.kb-header-title {
  font-size: 15px;
  font-weight: 700;
  flex: 1;
  color: var(--text-primary);
}
.kb-header-close {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.kb-header-close:hover { background: var(--bg-card-hover, #1C2035); color: var(--text-primary); }

/* ── Search ────────────────────────────────────────────────── */
.kb-search-wrap {
  padding: 8px 16px;
  flex-shrink: 0;
}
.kb-search {
  width: 100%;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border-md, rgba(255,255,255,.16));
  background: var(--bg-input, rgba(255,255,255,.07));
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: border-color .2s;
}
.kb-search:focus { border-color: var(--border-focus, #6366F1); }
.kb-search::placeholder { color: var(--text-muted); }

/* ── Panel Body (scrollable) ───────────────────────────────── */
.kb-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px 16px 24px;
}

/* ── Category Tree ─────────────────────────────────────────── */
.kb-cat-group { margin-bottom: 4px; }
.kb-cat-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 8px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-muted);
  transition: background .15s;
  user-select: none;
}
.kb-cat-header:hover { background: var(--bg-card-hover, #1C2035); }
.kb-cat-header .kb-cat-icon { opacity: .6; }
.kb-cat-header .kb-cat-chevron {
  margin-left: auto;
  transition: transform .2s;
  opacity: .4;
}
.kb-cat-header.collapsed .kb-cat-chevron { transform: rotate(-90deg); }

.kb-article-item {
  display: block;
  width: 100%;
  padding: 7px 8px 7px 32px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background .15s;
  line-height: 1.4;
}
.kb-article-item:hover { background: var(--bg-card-hover, #1C2035); }
.kb-article-item.active {
  background: var(--ps-red-muted, rgba(229,56,43,.18));
  color: var(--ps-red, #E5382B);
  font-weight: 600;
}

/* ── Article View ──────────────────────────────────────────── */
.kb-article-view { padding: 4px 0; }

.kb-article-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px;
  line-height: 1.3;
}
.kb-article-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.kb-article-meta span { display: inline-block; }
.kb-article-meta .sep { margin: 0 6px; opacity: .3; }

.kb-article-content {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.kb-article-content h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 20px 0 8px;
}
.kb-article-content h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 16px 0 6px;
}
.kb-article-content p { margin: 0 0 10px; }
.kb-article-content ul, .kb-article-content ol {
  margin: 0 0 10px;
  padding-left: 20px;
}
.kb-article-content li { margin-bottom: 4px; }
.kb-article-content code {
  font-size: 12px;
  padding: 1px 5px;
  border-radius: 4px;
  background: rgba(255,255,255,.06);
  color: var(--text-secondary);
}
.kb-article-content pre {
  font-size: 12px;
  padding: 12px;
  border-radius: 8px;
  background: rgba(0,0,0,.2);
  overflow-x: auto;
  margin: 0 0 10px;
}
.kb-article-content pre code { background: none; padding: 0; color: inherit; }
.kb-article-content blockquote {
  margin: 0 0 10px;
  padding: 8px 12px;
  border-left: 3px solid var(--ps-red-border, rgba(229,56,43,.40));
  background: var(--ps-red-muted, rgba(229,56,43,.18));
  border-radius: 0 6px 6px 0;
}
.kb-article-content img {
  max-width: 100%;
  border-radius: 8px;
  margin: 8px 0;
  border: 1px solid var(--border, rgba(255,255,255,.10));
}
.kb-article-content .kb-screenshot {
  display: block;
  margin: 8px 0;
  text-align: center;
}
.kb-article-content .kb-screenshot img {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border, rgba(255,255,255,.10));
}
.kb-article-content .kb-screenshot figcaption {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}
.kb-article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 10px;
  font-size: 12px;
}
.kb-article-content th, .kb-article-content td {
  padding: 6px 10px;
  border: 1px solid var(--border, rgba(255,255,255,.10));
  text-align: left;
}
.kb-article-content th {
  background: var(--bg-card, #161929);
  font-weight: 600;
}
.kb-article-content a { color: var(--ps-red, #E5382B); text-decoration: underline; }

/* ── Back button ───────────────────────────────────────────── */
.kb-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  margin-bottom: 8px;
  transition: background .15s, color .15s;
}
.kb-back-btn:hover { background: var(--bg-card-hover, #1C2035); color: var(--text-primary); }

/* ── Empty state ───────────────────────────────────────────── */
.kb-empty {
  text-align: center;
  padding: 40px 16px;
  color: var(--text-muted);
}
.kb-empty .kb-empty-icon { font-size: 32px; margin-bottom: 8px; opacity: .3; }
.kb-empty p { font-size: 13px; margin: 0; }

/* ── Search results ────────────────────────────────────────── */
.kb-result-item {
  display: block;
  width: 100%;
  padding: 10px 8px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: background .15s;
  border-bottom: 1px solid var(--border, rgba(255,255,255,.10));
}
.kb-result-item:hover { background: var(--bg-card-hover, #1C2035); }
.kb-result-item:last-child { border-bottom: none; }
.kb-result-title { font-size: 13px; font-weight: 600; }
.kb-result-cat { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.kb-result-excerpt {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Breadcrumb inside article ─────────────────────────────── */
.kb-breadcrumb {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.kb-breadcrumb span { cursor: pointer; }
.kb-breadcrumb span:hover { color: var(--ps-red, #E5382B); }
.kb-breadcrumb .sep { opacity: .3; cursor: default !important; }
.kb-breadcrumb .sep:hover { color: var(--text-muted) !important; }

/* ── Tags ──────────────────────────────────────────────────── */
.kb-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border, rgba(255,255,255,.10));
}
.kb-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  background: var(--ps-red-muted, rgba(229,56,43,.18));
  color: var(--ps-red, #E5382B);
  font-size: 11px;
  cursor: pointer;
  transition: background .15s;
}
.kb-tag:hover { filter: brightness(1.3); }

/* ── Related articles ──────────────────────────────────────── */
.kb-related {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border, rgba(255,255,255,.10));
}
.kb-related-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.kb-related-item {
  display: block;
  width: 100%;
  padding: 6px 8px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--ps-red, #E5382B);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background .15s;
}
.kb-related-item:hover { background: var(--ps-red-muted, rgba(229,56,43,.18)); }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 640px) {
  #kb-panel { width: 100vw; }
  #kb-fab {
    bottom: 72px;
    right: 16px;
    width: 44px;
    height: 44px;
  }
  .kb-article-title { font-size: 17px; }
}