/*
 * blog.css — RobotsLimpiafondos.es
 * Blog Transaccional: Action Cards, Filters, Flash Table, Pros/Cons, Sticky CTA
 * Paleta: Azules piscina + Blanco + Naranja acción (#F97316)
 * Mobile-first
 */

/* ═══════════════════════════════════════════
   TOKENS
═══════════════════════════════════════════ */
:root {
  --blog-accent:     #F97316;        /* Naranja acción */
  --blog-accent-hov: #EA6C0A;
  --blog-accent-lt:  #FFF7ED;
  --blog-blue:       #0C4A6E;        /* Azul piscina oscuro */
  --blog-blue-mid:   #0EA5E9;        /* Azul piscina claro */
  --blog-blue-lt:    #E0F2FE;
  --blog-green:      #059669;
  --blog-green-lt:   #D1FAE5;
  --blog-red:        #DC2626;
  --blog-red-lt:     #FEE2E2;
  --blog-dark:       #0F172A;
  --blog-mid:        #475569;
  --blog-muted:      #94A3B8;
  --blog-border:     #E2E8F0;
  --blog-bg:         #F8FAFC;
  --blog-white:      #FFFFFF;
  --blog-radius:     16px;
  --blog-shadow:     0 4px 20px rgba(0,0,0,0.07);
  --blog-shadow-hov: 0 12px 36px rgba(0,0,0,0.12);
  --blog-trans:      0.22s ease;
}

/* ═══════════════════════════════════════════
   BLOG HERO / HEADER
═══════════════════════════════════════════ */
.blog-hero {
  background: linear-gradient(155deg, var(--blog-blue) 0%, #164E63 55%, #0C4A6E 100%);
  padding: 52px 0 44px;
  position: relative;
  overflow: hidden;
}
.blog-hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 80% 0%, rgba(14,165,233,0.2) 0%, transparent 55%),
    radial-gradient(ellipse at 10% 100%, rgba(249,115,22,0.1) 0%, transparent 50%);
  pointer-events: none;
}
.blog-hero-inner { position: relative; }
.blog-hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(249,115,22,0.15);
  border: 1px solid rgba(249,115,22,0.35);
  color: var(--blog-accent);
  font-size: 0.72rem; font-weight: 700;
  padding: 4px 14px; border-radius: 20px;
  letter-spacing: 0.05em; text-transform: uppercase;
  margin-bottom: 16px;
}
.blog-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900; color: white;
  margin-bottom: 12px; letter-spacing: -0.02em;
  line-height: 1.2;
}
.blog-hero p {
  font-size: 1rem; color: #94A3B8;
  max-width: 500px; margin-bottom: 0;
}

/* ═══════════════════════════════════════════
   INTENT FILTER BAR
═══════════════════════════════════════════ */
.blog-filter-bar {
  background: var(--blog-white);
  border-bottom: 1.5px solid var(--blog-border);
  position: sticky;
  top: 62px; /* below site-header */
  z-index: 50;
  padding: 12px 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
}
.blog-filter-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 2px;
}
.blog-filter-inner::-webkit-scrollbar { display: none; }
.blog-filter-label {
  font-size: 0.75rem; font-weight: 700;
  color: var(--blog-muted); text-transform: uppercase;
  letter-spacing: 0.06em; white-space: nowrap;
  flex-shrink: 0;
}
.filter-btn {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--blog-bg);
  border: 1.5px solid var(--blog-border);
  color: var(--blog-mid);
  font-size: 0.8rem; font-weight: 600;
  padding: 7px 16px; border-radius: 20px;
  cursor: pointer; white-space: nowrap; flex-shrink: 0;
  transition: all var(--blog-trans);
}
.filter-btn:hover {
  border-color: var(--blog-blue-mid);
  color: var(--blog-blue);
  background: var(--blog-blue-lt);
}
.filter-btn.active {
  background: var(--blog-blue);
  border-color: var(--blog-blue);
  color: white;
  box-shadow: 0 2px 10px rgba(12,74,110,0.25);
}

/* ═══════════════════════════════════════════
   BLOG GRID LAYOUT
═══════════════════════════════════════════ */
.blog-section { background: var(--blog-bg); padding: 48px 0 72px; }

.blog-count-bar {
  font-size: 0.82rem; color: var(--blog-muted);
  margin-bottom: 24px; font-weight: 500;
}
.blog-count-bar strong { color: var(--blog-dark); }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}

/* ── ACTION CARD ── */
.action-card {
  background: var(--blog-white);
  border: 1.5px solid var(--blog-border);
  border-radius: var(--blog-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.28s cubic-bezier(0.34,1.56,0.64,1),
              box-shadow var(--blog-trans),
              border-color var(--blog-trans);
  /* scroll reveal */
  opacity: 0;
  transform: translateY(28px);
}
.action-card.revealed {
  opacity: 1;
  transform: translateY(0);
}
.action-card:hover {
  transform: translateY(-6px) !important;
  box-shadow: var(--blog-shadow-hov);
  border-color: var(--blog-blue-mid);
}
.action-card.hide {
  display: none;
}

/* Card top accent bar */
.card-accent-bar { height: 4px; width: 100%; }
.bar-orange { background: linear-gradient(90deg, var(--blog-accent), #FBBF24); }
.bar-blue   { background: linear-gradient(90deg, var(--blog-blue-mid), #38BDF8); }
.bar-green  { background: linear-gradient(90deg, var(--blog-green), #34D399); }
.bar-purple { background: linear-gradient(90deg, #8B5CF6, #A78BFA); }

/* Card body */
.card-body { padding: 22px 22px 16px; flex: 1; display: flex; flex-direction: column; }

/* Intent badge */
.card-intent {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.67rem; font-weight: 700;
  padding: 3px 10px; border-radius: 20px;
  text-transform: uppercase; letter-spacing: 0.05em;
  margin-bottom: 12px; align-self: flex-start;
}
.intent-cable   { background: var(--blog-blue-lt);  color: var(--blog-blue); }
.intent-wireless{ background: var(--blog-green-lt); color: var(--blog-green); }
.intent-budget  { background: #FEF9C3; color: #A16207; }
.intent-walls   { background: #F3E8FF; color: #6D28D9; }
.intent-maint   { background: #FCE7F3; color: #9D174D; }

/* Card title */
.card-title {
  font-size: 1.02rem; font-weight: 800;
  color: var(--blog-dark); margin-bottom: 14px;
  line-height: 1.35;
}

/* Bullets */
.card-bullets { list-style: none; padding: 0; margin: 0 0 16px; }
.card-bullets li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.82rem; color: var(--blog-mid);
  line-height: 1.5; margin-bottom: 6px;
}
.card-bullets li::before {
  content: '✓';
  color: var(--blog-green);
  font-weight: 800; flex-shrink: 0;
  margin-top: 1px;
}

/* Score bar */
.card-score-wrap { margin-bottom: 18px; }
.card-score-header {
  display: flex; justify-content: space-between;
  align-items: center; margin-bottom: 6px;
}
.card-score-label { font-size: 0.72rem; font-weight: 700; color: var(--blog-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.card-score-value { font-size: 1rem; font-weight: 900; color: var(--blog-blue); }

.score-bar-track {
  width: 100%; height: 8px;
  background: var(--blog-border);
  border-radius: 20px; overflow: hidden;
}
.score-bar-fill {
  height: 100%; border-radius: 20px;
  background: linear-gradient(90deg, var(--blog-blue-mid), var(--blog-blue));
  width: 0;
  transition: width 1s cubic-bezier(0.34,1.56,0.64,1);
}
.score-bar-fill.animated { width: var(--score-pct); }

/* Card footer / CTA */
.card-footer {
  border-top: 1px solid var(--blog-border);
  padding: 14px 22px;
  display: flex; gap: 8px; align-items: center;
}
.btn-action-card {
  flex: 1;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--blog-accent);
  color: white;
  font-weight: 800; font-size: 0.8rem;
  padding: 10px 14px; border-radius: 10px;
  text-decoration: none;
  transition: background var(--blog-trans), transform var(--blog-trans), box-shadow var(--blog-trans);
  box-shadow: 0 2px 10px rgba(249,115,22,0.3);
}
.btn-action-card:hover {
  background: var(--blog-accent-hov);
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 6px 18px rgba(249,115,22,0.4);
}
.btn-action-card:hover .btn-arr { transform: translateX(3px); }
.btn-arr { display: inline-block; transition: transform var(--blog-trans); }

.btn-read-card {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--blog-bg);
  border: 1.5px solid var(--blog-border);
  color: var(--blog-mid);
  font-size: 0.78rem; font-weight: 600;
  padding: 9px 14px; border-radius: 10px;
  text-decoration: none;
  transition: all var(--blog-trans);
  white-space: nowrap;
}
.btn-read-card:hover {
  border-color: var(--blog-blue-mid);
  color: var(--blog-blue);
  background: var(--blog-blue-lt);
}

/* Empty state */
.blog-empty {
  display: none;
  text-align: center; padding: 60px 24px;
  color: var(--blog-muted);
}
.blog-empty.show { display: block; }
.blog-empty-icon { font-size: 2.5rem; margin-bottom: 12px; }
.blog-empty h3 { font-size: 1.1rem; color: var(--blog-dark); margin-bottom: 8px; }

/* ═══════════════════════════════════════════
   BLOG ARTICLE PAGE
═══════════════════════════════════════════ */

/* Article hero */
.article-hero {
  background: linear-gradient(155deg, var(--blog-blue) 0%, #164E63 100%);
  padding: 48px 0 40px;
  position: relative; overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 0%, rgba(14,165,233,0.2) 0%, transparent 55%);
  pointer-events: none;
}
.article-hero-inner { position: relative; max-width: 820px; }
.article-chips {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px;
}
.article-chip {
  font-size: 0.71rem; font-weight: 700;
  padding: 4px 12px; border-radius: 20px;
  letter-spacing: 0.04em;
}
.chip-topic   { background: rgba(249,115,22,0.18); color: var(--blog-accent); }
.chip-generic { background: rgba(255,255,255,0.1); color: #94A3B8; }
.article-hero h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 900; color: white; margin: 0 0 14px;
  line-height: 1.2; letter-spacing: -0.02em;
}
.article-hero-sub { font-size: 0.95rem; color: #94A3B8; line-height: 1.65; margin: 0; }

/* FLASH COMPARISON TABLE */
.flash-table-wrap {
  background: var(--blog-white);
  border: 1.5px solid var(--blog-border);
  border-radius: 18px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--blog-shadow);
  margin: 32px 0;
}
.flash-table-title {
  background: var(--blog-blue);
  color: white;
  font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  padding: 12px 20px;
}
.flash-table {
  width: 100%; border-collapse: collapse; min-width: 480px;
}
.flash-table thead th {
  background: #F8FAFC;
  padding: 14px 16px;
  font-size: 0.8rem; font-weight: 800;
  color: var(--blog-dark);
  text-align: center;
  border-bottom: 1.5px solid var(--blog-border);
}
.flash-table thead th:first-child { text-align: left; }
.flash-table thead th.winner-col {
  background: linear-gradient(135deg, var(--blog-blue), #164E63);
  color: white;
}
.flash-table tbody td {
  padding: 12px 16px;
  font-size: 0.84rem;
  color: var(--blog-dark);
  border-bottom: 1px solid #F1F5F9;
  text-align: center;
  vertical-align: middle;
}
.flash-table tbody td:first-child { text-align: left; font-weight: 600; color: var(--blog-mid); }
.flash-table tbody tr:last-child td { border-bottom: none; }
.flash-table tbody tr:hover td { background: #FAFAFA; }
.flash-table .winner-cell {
  background: rgba(12,74,110,0.04);
  font-weight: 700;
}
.flash-yes { color: var(--blog-green); font-weight: 700; }
.flash-no  { color: var(--blog-red); font-weight: 700; }

/* PROS & CONS */
.pros-cons-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 28px 0;
}
@media (max-width: 600px) { .pros-cons-grid { grid-template-columns: 1fr; } }

.pros-box, .cons-box {
  border-radius: 14px;
  padding: 22px;
}
.pros-box {
  background: var(--blog-green-lt);
  border: 1.5px solid #6EE7B7;
}
.cons-box {
  background: var(--blog-red-lt);
  border: 1.5px solid #FCA5A5;
}
.pros-box h3 { color: var(--blog-green); font-size: 0.9rem; font-weight: 800; margin: 0 0 14px; display: flex; align-items: center; gap: 7px; }
.cons-box h3 { color: var(--blog-red);   font-size: 0.9rem; font-weight: 800; margin: 0 0 14px; display: flex; align-items: center; gap: 7px; }

.pros-list, .cons-list { list-style: none; padding: 0; margin: 0; }
.pros-list li, .cons-list li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.85rem; line-height: 1.6;
  color: var(--blog-dark); margin-bottom: 8px; padding-bottom: 8px;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}
.pros-list li:last-child, .cons-list li:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.pros-list li::before { content: '✓'; color: var(--blog-green); font-weight: 900; flex-shrink: 0; margin-top: 2px; }
.cons-list li::before { content: '✗'; color: var(--blog-red);   font-weight: 900; flex-shrink: 0; margin-top: 2px; }

/* ARTICLE BODY */
.article-body {
  max-width: 820px;
  margin: 0 auto;
  font-size: 0.92rem;
  line-height: 1.78;
  color: #374151;
}
.article-body h2 {
  font-size: 1.2rem; font-weight: 800;
  color: var(--blog-dark);
  margin: 36px 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid #F1F5F9;
}
.article-body p { margin: 0 0 16px; }

/* TECHNICAL ACCORDION */
.tech-accordion { margin: 28px 0; }
.tech-acc-item {
  background: var(--blog-white);
  border: 1.5px solid var(--blog-border);
  border-radius: 12px;
  margin-bottom: 8px;
  overflow: hidden;
  transition: border-color var(--blog-trans), box-shadow var(--blog-trans);
}
.tech-acc-item.open {
  border-color: var(--blog-blue-mid);
  box-shadow: 0 3px 14px rgba(14,165,233,0.1);
}
.tech-acc-trigger {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 15px 18px;
  background: none; border: none; cursor: pointer; text-align: left;
  transition: background var(--blog-trans);
}
.tech-acc-trigger:hover { background: var(--blog-bg); }
.tech-acc-q {
  font-size: 0.88rem; font-weight: 700; color: var(--blog-dark);
}
.tech-acc-chevron {
  font-size: 0.9rem; color: var(--blog-muted);
  transition: transform var(--blog-trans), color var(--blog-trans);
  flex-shrink: 0;
}
.tech-acc-item.open .tech-acc-chevron {
  transform: rotate(180deg); color: var(--blog-blue-mid);
}
.tech-acc-body {
  max-height: 0; overflow: hidden;
  transition: max-height 0.38s cubic-bezier(0.4,0,0.2,1);
}
.tech-acc-item.open .tech-acc-body { max-height: 500px; }
.tech-acc-content {
  padding: 0 18px 16px;
  font-size: 0.85rem; color: var(--blog-mid); line-height: 1.7;
}

/* STICKY CTA BAR (article) */
.sticky-article-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--blog-blue);
  padding: 14px 20px;
  z-index: 100;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
}
.sticky-article-cta.visible { transform: translateY(0); }
.sticky-cta-inner {
  max-width: 820px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap;
}
.sticky-cta-text {
  font-size: 0.88rem; font-weight: 700; color: rgba(255,255,255,0.85);
  line-height: 1.4;
}
.sticky-cta-text strong { color: white; }
.btn-sticky-cta {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--blog-accent);
  color: white;
  font-weight: 800; font-size: 0.88rem;
  padding: 12px 24px; border-radius: 10px;
  text-decoration: none; white-space: nowrap;
  transition: background var(--blog-trans), transform var(--blog-trans);
  box-shadow: 0 3px 12px rgba(249,115,22,0.4);
}
.btn-sticky-cta:hover {
  background: var(--blog-accent-hov);
  transform: scale(1.03);
}

/* ═══════════════════════════════════════════
   CALLOUT BOXES (article)
═══════════════════════════════════════════ */
.article-callout {
  border-radius: 12px; padding: 18px 20px;
  margin: 24px 0; display: flex; gap: 14px; align-items: flex-start;
}
.callout-ok   { background: #F0FDF4; border-left: 4px solid #16A34A; }
.callout-warn { background: #FFFBEB; border-left: 4px solid #D97706; }
.callout-info { background: #EFF6FF; border-left: 4px solid #3B82F6; }
.callout-emoji { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.callout-text { font-size: 0.87rem; line-height: 1.65; color: #374151; }
.callout-text strong { color: var(--blog-dark); }

/* ═══════════════════════════════════════════
   RELATED ARTICLES (bottom of article)
═══════════════════════════════════════════ */
.related-articles { background: var(--blog-bg); padding: 48px 0; }
.related-articles h2 {
  font-size: 1.1rem; font-weight: 800;
  color: var(--blog-dark); margin-bottom: 22px;
  border-left: 4px solid var(--blog-blue-mid);
  padding-left: 12px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.related-mini-card {
  background: var(--blog-white);
  border: 1.5px solid var(--blog-border);
  border-radius: 12px; padding: 18px;
  text-decoration: none; color: inherit;
  display: flex; flex-direction: column; gap: 8px;
  transition: border-color var(--blog-trans), transform 0.25s ease, box-shadow var(--blog-trans);
}
.related-mini-card:hover {
  border-color: var(--blog-blue-mid);
  transform: translateY(-3px);
  box-shadow: var(--blog-shadow);
}
.related-mini-card .topic { font-size: 0.68rem; font-weight: 700; color: var(--blog-blue-mid); text-transform: uppercase; letter-spacing: 0.05em; }
.related-mini-card h3 { font-size: 0.9rem; font-weight: 700; color: var(--blog-dark); line-height: 1.35; margin: 0; }
.related-mini-card .arrow { font-size: 0.8rem; color: var(--blog-accent); font-weight: 700; margin-top: 4px; }

/* ═══════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════ */
@media (max-width: 768px) {
  .blog-hero { padding: 40px 0 32px; }
  .blog-grid { grid-template-columns: 1fr; }
  .blog-filter-bar { top: 56px; }
  .card-footer { flex-direction: column; }
  .btn-action-card, .btn-read-card { width: 100%; justify-content: center; }
  .sticky-cta-inner { flex-direction: column; gap: 10px; }
  .btn-sticky-cta { width: 100%; justify-content: center; }
  .flash-table { font-size: 0.78rem; }
  .flash-table thead th, .flash-table tbody td { padding: 10px 10px; }
}