/* ============================================
   ReadPuppy Knowledge Base — kb.css ?v=1.0
   Public article pages — readability-first
   ============================================ */

/* ── Article Index — Hero + Grid ──────────────────────────── */
.kb-hero {
  background: linear-gradient(160deg, var(--rp-hero-1) 0%, var(--rp-hero-2) 60%, var(--rp-hero-3) 100%);
  padding: 56px 0 48px;
  text-align: center;
  color: #fff;
}
.kb-hero__title {
  font-family: 'DM Serif Display', serif;
  font-size: 2.4rem;
  color: #fff;
  margin-bottom: 10px;
}
.kb-hero__sub {
  font-size: 1rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 28px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.kb-hero__search {
  max-width: 440px;
  margin: 0 auto;
  position: relative;
}
.kb-hero__input {
  width: 100%;
  padding: 13px 18px 13px 44px;
  border: 1.5px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 0.95rem;
  font-family: 'DM Sans', sans-serif;
  backdrop-filter: blur(8px);
  transition: all 0.2s;
}
.kb-hero__input::placeholder { color: rgba(255,255,255,0.4); }
.kb-hero__input:focus {
  outline: none;
  border-color: rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.12);
}
.kb-hero__search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255,255,255,0.4);
  font-size: 1rem;
  pointer-events: none;
}

/* ── Article Grid ─────────────────────────────────────────── */
.kb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  padding: 40px 0 60px;
}

/* ── Article Card (index listing) ─────────────────────────── */
.kb-card {
  background: var(--rp-white);
  border: 1px solid var(--rp-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.2s;
  text-decoration: none;
  color: inherit;
}
.kb-card:hover {
  border-color: var(--rp-purple-mid);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
  color: inherit;
}
.kb-card__principle {
  display: inline-block;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--rp-purple);
  background: var(--rp-purple-light);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
  align-self: flex-start;
}
.kb-card__title {
  font-family: 'DM Serif Display', serif;
  font-size: 1.15rem;
  color: var(--rp-dark);
  line-height: 1.3;
  margin-bottom: 10px;
}
.kb-card__excerpt {
  font-size: 0.88rem;
  color: var(--rp-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 14px;
}
.kb-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--rp-muted-light);
}
.kb-card__read-time {
  font-weight: 600;
}
.kb-card__topic-link {
  color: var(--rp-purple);
  font-weight: 600;
}
.kb-card.is-hidden { display: none; }

/* ── No Results ───────────────────────────────────────────── */
.kb-no-results {
  text-align: center;
  padding: 48px 24px;
  color: var(--rp-muted);
  font-size: 0.95rem;
  display: none;
}
.kb-no-results.is-visible { display: block; }

/* ── Single Article Page ──────────────────────────────────── */
.kb-article {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* Breadcrumb */
.kb-breadcrumb {
  padding: 16px 0;
  font-size: 0.8rem;
  color: var(--rp-muted-light);
}
.kb-breadcrumb a {
  color: var(--rp-muted);
  text-decoration: none;
}
.kb-breadcrumb a:hover { color: var(--rp-purple); text-decoration: none; }
.kb-breadcrumb__sep { margin: 0 6px; color: var(--rp-border-dark); }

/* Article header */
.kb-article__header {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--rp-border);
}
.kb-article__principle {
  display: inline-block;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--rp-purple);
  background: var(--rp-purple-light);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.kb-article__title {
  font-family: 'DM Serif Display', serif;
  font-size: 2.2rem;
  color: var(--rp-dark);
  line-height: 1.2;
  margin-bottom: 14px;
}
.kb-article__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--rp-muted);
}
.kb-article__author { font-weight: 600; color: var(--rp-mid); }
.kb-article__dot { color: var(--rp-border-dark); }

/* Article body — readability optimized */
.kb-article__body {
  font-family: 'Lora', Georgia, serif;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--rp-mid);
}
.kb-article__body h2 {
  font-family: 'DM Serif Display', serif;
  font-size: 1.5rem;
  color: var(--rp-dark);
  margin-top: 40px;
  margin-bottom: 16px;
  line-height: 1.25;
}
.kb-article__body p {
  margin-bottom: 18px;
}
.kb-article__body ul {
  padding-left: 0;
  margin-bottom: 20px;
}
.kb-article__body li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  line-height: 1.7;
}
.kb-article__body li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rp-purple);
}
.kb-article__body blockquote {
  border-left: 3px solid var(--rp-purple);
  padding: 16px 20px;
  margin: 24px 0;
  background: var(--rp-purple-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--rp-purple-text);
}

/* ── CTA Card (inline upsell) ─────────────────────────────── */
.kb-cta {
  background: linear-gradient(135deg, var(--rp-hero-1), var(--rp-hero-2));
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 40px 0;
  color: #fff;
  text-align: center;
}
.kb-cta__eyebrow {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 10px;
}
.kb-cta__title {
  font-family: 'DM Serif Display', serif;
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.3;
}
.kb-cta__desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 20px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
.kb-cta__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #F59E0B, #D97706);
  color: #1a0f00;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s;
}
.kb-cta__btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(217,119,6,0.4);
  text-decoration: none;
  color: #1a0f00;
}
.kb-cta__btn--outline {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.3);
  color: #fff;
}
.kb-cta__btn--outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
  color: #fff;
  box-shadow: none;
}

/* ── Related Articles ─────────────────────────────────────── */
.kb-related {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--rp-border);
}
.kb-related__title {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--rp-muted);
  margin-bottom: 16px;
}
.kb-related__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.kb-related__link {
  display: block;
  padding: 16px;
  border: 1px solid var(--rp-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.15s;
}
.kb-related__link:hover {
  border-color: var(--rp-purple-mid);
  background: var(--rp-bg-alt);
  text-decoration: none;
}
.kb-related__link-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--rp-dark);
  line-height: 1.35;
}
.kb-related__link-principle {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--rp-purple);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 6px;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .kb-hero { padding: 40px 0 36px; }
  .kb-hero__title { font-size: 1.8rem; }
  .kb-grid { grid-template-columns: 1fr; gap: 16px; padding: 28px 0 48px; }
  .kb-article__title { font-size: 1.7rem; }
  .kb-article__body { font-size: 1rem; }
  .kb-related__grid { grid-template-columns: 1fr; }
  .kb-cta { padding: 24px 20px; }
}
@media (max-width: 480px) {
  .kb-hero__title { font-size: 1.5rem; }
  .kb-article__title { font-size: 1.45rem; }
  .kb-article { padding: 0 18px 48px; }
}