/*
 * KnowledgeBase Pro — Frontend Styles v1.0.6
 */

/* ── Variáveis ─────────────────────────────────────────────────────────────── */
:root {
  --kb-primary:       #3f669d;
  --kb-primary-mid:   #569ade;
  --kb-primary-dark:  #182636;
  --kb-accent:        #35a5cd;
  --kb-primary-light: #e8f0f8;
  --kb-primary-pale:  #f0f5fb;
  --kb-ink:           #111827;
  --kb-ink-soft:      #374151;
  --kb-ink-muted:     #6b7280;
  --kb-paper:         #ffffff;
  --kb-paper-warm:    #f9fafb;
  --kb-border:        #e5e7eb;
  --kb-border-strong: #9ab5d0;
  --kb-shadow-sm:     0 1px 3px rgba(0,0,0,.07);
  --kb-shadow-md:     0 4px 16px rgba(0,0,0,.10);
  --kb-shadow-lg:     0 12px 40px rgba(0,0,0,.14);
  --kb-radius:        8px;
  --kb-radius-lg:     12px;
  --kb-card-accent:   var(--kb-primary);
}

/* ── Reset escopo ──────────────────────────────────────────────────────────── */
.kb-wrap *, .kb-wrap *::before, .kb-wrap *::after { box-sizing: border-box; }

.kb-wrap {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px; line-height: 1.7;
  color: var(--kb-ink);
  background: var(--kb-paper);
  -webkit-font-smoothing: antialiased;
}

/* ── HERO (light) ──────────────────────────────────────────────────────────── */
.kb-hero {
  background: linear-gradient(160deg, var(--kb-primary-pale) 0%, #ffffff 60%);
  border-bottom: 1px solid var(--kb-border);
  padding: 56px 56px 48px;
  width: 100%;
  position: relative;
  /* overflow:visible garante que o dropdown de busca não seja cortado */
  overflow: visible;
  z-index: 10;
}

.kb-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 90% 20%, rgba(63,102,157,.07) 0%, transparent 65%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(53,165,205,.05) 0%, transparent 60%);
  pointer-events: none;
}

.kb-hero-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.kb-hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--kb-primary-light);
  border: 1px solid rgba(63,102,157,.25);
  border-radius: 40px; padding: 5px 16px;
  font-size: 11px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase;
  color: var(--kb-primary); margin-bottom: 24px; width: fit-content;
}

.kb-hero-badge::before {
  content: ''; width: 7px; height: 7px; border-radius: 50%;
  background: var(--kb-accent);
  animation: kb-pulse 2s ease-in-out infinite;
}
@keyframes kb-pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.3)} }

.kb-hero-title {
  font-size: clamp(26px, 3.5vw, 44px); font-weight: 800;
  line-height: 1.15; letter-spacing: -.025em;
  color: var(--kb-ink); margin: 0 0 16px;
}
.kb-hero-title em { font-style: normal; color: var(--kb-primary); }

.kb-hero-lead {
  font-size: 15.5px; color: var(--kb-ink-muted);
  max-width: 500px; margin: 0 0 32px; line-height: 1.65;
}

/* ── BUSCA ─────────────────────────────────────────────────────────────────── */
.kb-search-wrap {
  position: relative;
  width: 100%;
  max-width: 580px;
  margin: 0 auto 32px;
  z-index: 400;
}
.kb-search-icon {
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  color: var(--kb-ink-muted); pointer-events: none; display: flex;
}
.kb-search-wrap input[type="text"] {
  width: 100%; height: 52px; padding: 0 50px 0 46px;
  border: 2px solid var(--kb-border); border-radius: var(--kb-radius-lg);
  background: #fff;
  color: var(--kb-ink); font-size: 15px; font-family: inherit; outline: none;
  transition: border-color .2s, box-shadow .2s;
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
}
.kb-search-wrap input::placeholder { color: var(--kb-ink-muted); }
.kb-search-wrap input:focus {
  border-color: var(--kb-primary);
  box-shadow: 0 0 0 3px rgba(63,102,157,.12), 0 2px 8px rgba(0,0,0,.06);
}
.kb-search-spinner {
  position: absolute; right: 16px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px;
  border: 2px solid var(--kb-border); border-top-color: var(--kb-primary);
  border-radius: 50%; animation: kb-spin .7s linear infinite; display: none;
}
.kb-search-spinner.kb-visible { display: block; }
@keyframes kb-spin { to { transform: translateY(-50%) rotate(360deg); } }

.kb-search-dropdown {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0;
  background: var(--kb-paper); border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-lg); box-shadow: var(--kb-shadow-lg);
  max-height: 320px; overflow-y: auto; z-index: 9999; display: none;
  text-align: left;
}
.kb-search-dropdown.kb-visible { display: block; }
.kb-search-result {
  display: block; padding: 12px 16px;
  border-bottom: 1px solid var(--kb-border);
  text-decoration: none; color: var(--kb-ink);
  transition: background .12s;
}
.kb-search-result:last-child { border-bottom: none; }
.kb-search-result:hover, .kb-result-focused { background: var(--kb-primary-pale); }
.kb-search-result-cat { font-size: 10px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--kb-primary); margin-bottom: 2px; }
.kb-search-result-title { font-size: 14px; font-weight: 600; color: var(--kb-ink); margin-bottom: 2px; }
.kb-search-result-excerpt { font-size: 12px; color: var(--kb-ink-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kb-search-empty, .kb-search-loading { padding: 20px; text-align: center; font-size: 13.5px; color: var(--kb-ink-muted); }

/* ── META STATS ────────────────────────────────────────────────────────────── */
.kb-hero-meta { display: flex; gap: 32px; flex-wrap: wrap; justify-content: center; }
.kb-hero-meta-item { display: flex; flex-direction: column; gap: 2px; align-items: center; }
.kb-hero-meta-label {
  font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--kb-ink-muted);
}
.kb-hero-meta-value { font-size: 15px; color: var(--kb-ink); font-weight: 600; }

/* ── LAYOUT BODY ───────────────────────────────────────────────────────────── */
.kb-body-wrap {
  display: flex; align-items: flex-start;
  padding: 0 32px 48px; gap: 40px;
}

/* ── SIDEBAR ───────────────────────────────────────────────────────────────── */
.kb-sidebar {
  width: 220px; flex-shrink: 0;
  position: sticky; top: 72px;
  padding: 28px 0;
}
.kb-sidebar-title {
  font-size: 10.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--kb-ink-muted); padding-bottom: 12px; margin-bottom: 6px;
  border-bottom: 1px solid var(--kb-border);
}
.kb-cat-nav { display: flex; flex-direction: column; gap: 1px; }
.kb-cat-link {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: var(--kb-radius);
  font-size: 13.5px; color: var(--kb-ink-soft);
  text-decoration: none !important;
  transition: background .13s, color .13s;
}
.kb-cat-link:hover { background: var(--kb-primary-pale); color: var(--kb-primary); text-decoration: none !important; }
.kb-cat-link--active, .kb-cat-link.active {
  background: var(--kb-primary-light); color: var(--kb-primary); font-weight: 600;
}
.kb-cat-dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; display: block; }
.kb-cat-count {
  margin-left: auto; background: var(--kb-primary-light); color: var(--kb-primary);
  font-size: 11px; font-weight: 700; padding: 1px 7px; border-radius: 20px;
}

/* ── MAIN CONTENT ──────────────────────────────────────────────────────────── */
.kb-main-content { flex: 1; min-width: 0; padding: 40px 0 0; }

/* ── SECTION ───────────────────────────────────────────────────────────────── */
.kb-section { padding-bottom: 8px; margin-bottom: 40px; }
.kb-section-header { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 20px; }
.kb-section-label {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase;
  color: var(--kb-primary); background: var(--kb-primary-light);
  border-radius: var(--kb-radius); padding: 4px 10px; margin-top: 5px; white-space: nowrap;
}
.kb-section-num {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 11px; font-weight: 600; letter-spacing: .04em;
  color: var(--kb-primary); background: var(--kb-primary-light);
  border-radius: var(--kb-radius); padding: 4px 10px; margin-top: 5px; white-space: nowrap;
}
.kb-section h2 {
  font-size: clamp(20px, 2.5vw, 26px); font-weight: 700;
  color: var(--kb-ink); line-height: 1.2; letter-spacing: -.015em; margin: 0;
}
.kb-cat-description { color: var(--kb-ink-soft); font-size: 14.5px; margin: -8px 0 16px; }

/* ── CARDS ─────────────────────────────────────────────────────────────────── */
.kb-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 4px;
}

.kb-wrap .kb-card {
  position: relative;
  border: 1.5px solid #e5e7eb;
  border-radius: 12px;
  padding: 20px 20px 16px;
  background: #f9fafb;
  text-decoration: none !important;
  display: flex; flex-direction: column; gap: 6px;
  box-shadow: 0 1px 3px rgba(0,0,0,.07);
  transition: box-shadow .18s, border-color .18s, transform .18s;
  overflow: hidden;
  color: inherit !important;
}

.kb-wrap .kb-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--kb-card-accent, var(--kb-primary));
  border-radius: 12px 12px 0 0;
}

.kb-wrap .kb-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,.11);
  border-color: var(--kb-card-accent, var(--kb-primary));
  transform: translateY(-2px);
  text-decoration: none !important;
}

.kb-wrap .kb-card-new-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 10px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: #fff !important; background: #e74c3c !important;
  border-radius: 20px; padding: 2px 8px; width: fit-content; margin-bottom: 2px;
  animation: kb-new-pulse 2.5s ease-in-out infinite;
}
@keyframes kb-new-pulse { 0%,100%{opacity:1} 50%{opacity:.7} }

.kb-wrap .kb-card-cat {
  font-size: 10.5px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase;
  color: var(--kb-card-accent, var(--kb-primary));
}

.kb-wrap .kb-card-index {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 11px; font-weight: 600;
  color: var(--kb-card-accent, var(--kb-primary));
  opacity: .75;
}

.kb-wrap .kb-card-title {
  font-size: 14px; font-weight: 600;
  color: #111827 !important; line-height: 1.38; flex: 1;
}

.kb-wrap .kb-card-date {
  font-size: 11.5px; color: #6b7280;
  display: flex; align-items: center; gap: 5px;
  margin-top: auto; padding-top: 8px;
  border-top: 1px solid rgba(0,0,0,.07);
}

/* ── LOAD MORE ─────────────────────────────────────────────────────────────── */
.kb-load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

.kb-load-more-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--kb-primary);
  border: 2px solid var(--kb-primary-light);
  border-radius: 40px; padding: 10px 24px;
  font-size: 13.5px; font-weight: 600; font-family: inherit;
  cursor: pointer; transition: background .15s, border-color .15s, box-shadow .15s;
  box-shadow: 0 2px 8px rgba(63,102,157,.08);
}
.kb-load-more-btn:hover {
  background: var(--kb-primary-pale);
  border-color: var(--kb-primary);
  box-shadow: 0 4px 12px rgba(63,102,157,.15);
}
.kb-load-more-btn:disabled {
  opacity: .6; cursor: not-allowed;
}
.kb-load-more-count {
  font-size: 12px; font-weight: 400;
  color: var(--kb-ink-muted);
}

/* ── ESTADO VAZIO ──────────────────────────────────────────────────────────── */
.kb-empty { text-align: center; padding: 80px 32px; color: var(--kb-ink-muted); }
.kb-empty-icon { font-size: 48px; margin-bottom: 16px; }
.kb-empty h2 { font-size: 20px; color: var(--kb-ink); margin-bottom: 8px; }
.kb-empty a, .kb-no-content a { color: var(--kb-primary); }
.kb-no-content { font-size: 14px; color: var(--kb-ink-muted); font-style: italic; padding: 8px 0; }

/* ── SCROLLBAR ─────────────────────────────────────────────────────────────── */
.kb-search-dropdown::-webkit-scrollbar { width: 5px; }
.kb-search-dropdown::-webkit-scrollbar-thumb { background: var(--kb-border-strong); border-radius: 4px; }

/* ── RESPONSIVO ────────────────────────────────────────────────────────────── */
@media (max-width: 1024px) { .kb-card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 900px) { .kb-hero { padding: 44px 28px 40px; } }
@media (max-width: 768px) {
  .kb-body-wrap { flex-direction: column; padding: 0 20px 40px; gap: 0; }
  .kb-sidebar { position: static; width: 100%; padding: 20px 0 0; border-bottom: 1px solid var(--kb-border); margin-bottom: 28px; }
  .kb-cat-nav { flex-direction: row; flex-wrap: wrap; gap: 6px; }
  .kb-cat-link { padding: 6px 12px; border: 1px solid var(--kb-border); border-radius: 20px; font-size: 12.5px; }
  .kb-main-content { padding-top: 0; }
}
@media (max-width: 580px) {
  .kb-card-grid { grid-template-columns: 1fr; }
  .kb-hero { padding: 36px 20px 32px; }
}

/* ══════════════════════════════════════════════════════════════════════════════
   READ TRACKING — v1.0.7
══════════════════════════════════════════════════════════════════════════════ */

/* Progress bar no hero */
.kb-progress-bar-wrap {
  width: 100%;
  max-width: 580px;
  height: 5px;
  background: rgba(63,102,157,.12);
  border-radius: 10px;
  margin: 16px auto 0;
  overflow: hidden;
  cursor: help;
}
.kb-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--kb-primary), var(--kb-accent));
  border-radius: 10px;
  transition: width .6s cubic-bezier(.4,0,.2,1);
  min-width: 0;
}

/* Meta item de lidos */
.kb-hero-meta-item--read .kb-hero-meta-label {
  color: var(--kb-primary);
  font-weight: 700;
}
.kb-hero-meta-item--read .kb-hero-meta-value {
  color: var(--kb-primary);
  font-weight: 700;
}
.kb-read-progress-label {
  font-weight: 400;
  font-size: 13px;
  color: var(--kb-ink-muted);
  margin-left: 1px;
}

/* Badge de lido/não-lido no canto superior direito do card */
.kb-wrap .kb-card {
  /* garante posicionamento do badge */
  position: relative;
}
.kb-wrap .kb-card-read-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background .18s, border-color .18s, transform .18s;
  /* estado padrão: não lido */
  background: #fff;
  border: 1.5px solid #d1d5db;
  color: #9ca3af;
}

/* Lido: fundo verde suave */
.kb-wrap .kb-card--read .kb-card-read-badge {
  background: #d1fae5;
  border-color: #6ee7b7;
  color: #059669;
}

/* Card lido: levemente opaco para dar sensação de "já visitado" */
.kb-wrap .kb-card--read {
  opacity: .82;
}
.kb-wrap .kb-card--read:hover {
  opacity: 1;
}

/* Animação ao marcar como lido via JS */
.kb-wrap .kb-card--just-read .kb-card-read-badge {
  animation: kb-read-pop .35s cubic-bezier(.36,.07,.19,.97);
}
@keyframes kb-read-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.4); }
  70%  { transform: scale(.9); }
  100% { transform: scale(1); }
}

/* ── Search result read indicator ───────────────────────────────────────────── */
.kb-search-result {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.kb-search-result-check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid #d1d5db;
  background: #fff;
  color: #9ca3af;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.kb-search-result-check--read {
  background: #d1fae5;
  border-color: #6ee7b7;
  color: #059669;
}
.kb-search-result-body {
  flex: 1;
  min-width: 0;
}