/* ============================================================
   GUÍA SEMÁNTICA DE SERVICIO + CALCULADORA DE ÁRIDOS + ARTÍCULOS
   (src/vista/partials/guia-servicio.php, calculadora-aridos.php, paginas/articulo.php)
   Mobile-first. Paleta y tipografías del sitio (header.css).
   ============================================================ */

/* Migas de pan visibles (hero oscuro de servicio.php y artículos) */
.migas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 8px;
  margin-bottom: 14px;
  font-size: .85rem;
  color: rgba(255, 255, 255, .75);
}

.migas a { color: #fff; text-decoration: underline; text-underline-offset: 2px; }
.migas [aria-current] { color: rgba(255, 255, 255, .75); }

.guia-section {
  background: #fff;
  padding: 64px 0 72px;
  color: #14181c;
}

.guia-wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.guia-header {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 760px;
}

.guia-tag {
  align-self: flex-start;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #1B3E96;
  background: rgba(27, 62, 150, .08);
  padding: 6px 12px;
  border-radius: 999px;
}

.guia-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 6.2vw, 2.7rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: .01em;
  margin: 0;
  color: #14181c;
}

.guia-lead {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #5a6470;
}

/* ── Índice ── */
.guia-indice {
  background: #f8f9fb;
  border: 1px solid #e8ebf0;
  border-radius: 18px;
  padding: 18px 20px;
}

.guia-indice__titulo {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #5a6470;
  margin: 0 0 10px;
}

.guia-indice ol {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px 24px;
  counter-reset: gi;
}

.guia-indice li { counter-increment: gi; }

.guia-indice a {
  display: flex;
  gap: 10px;
  font-size: .98rem;
  font-weight: 600;
  line-height: 1.4;
  color: #1B3E96;
  padding: 4px 0;
}

.guia-indice a::before {
  content: counter(gi, decimal-leading-zero);
  color: #F5A800;
  font-weight: 700;
  min-width: 1.6em;
}

.guia-indice a:hover { text-decoration: underline; }

/* ── Bloques ── */
.guia-bloques {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.guia-bloque {
  background: #fff;
  border: 1px solid #e8ebf0;
  border-radius: 20px;
  padding: 24px 20px;
  scroll-margin-top: 90px;
}

.guia-bloque__titulo {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 14px;
  color: #14181c;
}

.guia-bloque p {
  margin: 0 0 12px;
  font-size: 1rem;
  line-height: 1.75;
  color: #4a535e;
}

.guia-bloque strong { color: #14181c; }

.guia-bloque a,
.guia-lead a,
.guia-nota a {
  color: #1B3E96;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Lista con check */
.guia-lista {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 6px 0 12px;
}

.guia-lista li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 1rem;
  line-height: 1.6;
  color: #4a535e;
}

.guia-lista i {
  color: #F5A800;
  margin-top: 5px;
  font-size: .85rem;
}

/* Pasos numerados */
.guia-pasos {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 8px 0 12px;
}

.guia-pasos li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.guia-pasos__num {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 1.6rem;
  line-height: 1;
  color: #F5A800;
  min-width: 34px;
}

.guia-pasos strong {
  display: block;
  font-size: 1.02rem;
  margin-bottom: 2px;
  color: #14181c;
}

.guia-pasos p { margin: 0; }

/* Tabla (en mobile cada fila pasa a tarjeta) */
.guia-tabla {
  margin: 8px 0 12px;
  outline: none;
}

.guia-tabla table {
  width: 100%;
  border-collapse: collapse;
  font-size: .95rem;
}

.guia-tabla caption {
  text-align: left;
  font-size: .82rem;
  color: #5a6470;
  padding-bottom: 8px;
}

.guia-tabla thead { display: none; }

.guia-tabla tr {
  display: block;
  border: 1px solid #e8ebf0;
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 10px;
  background: #fbfcfd;
}

.guia-tabla th[scope="row"] {
  display: block;
  text-align: left;
  font-weight: 700;
  color: #14181c;
  font-size: 1rem;
  margin-bottom: 6px;
}

.guia-tabla td {
  display: block;
  color: #4a535e;
  line-height: 1.55;
  padding: 3px 0;
}

.guia-tabla td::before {
  content: attr(data-label) ": ";
  font-weight: 700;
  color: #1B3E96;
}

/* Nota */
.guia-nota {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: rgba(245, 168, 0, .10);
  border-left: 3px solid #F5A800;
  border-radius: 10px;
  padding: 12px 14px;
  margin-top: 8px !important;
  font-size: .95rem !important;
}

.guia-nota i { color: #b57b00; margin-top: 4px; }

/* Lecturas relacionadas */
.guia-lecturas {
  background: #0f1e45;
  border-radius: 20px;
  padding: 22px 20px;
}

.guia-lecturas__titulo {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #F5A800;
  margin: 0 0 12px;
}

.guia-lecturas ul {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.guia-lecturas a {
  display: flex;
  gap: 10px;
  align-items: center;
  font-weight: 600;
  font-size: .98rem;
  color: #fff;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .06);
  transition: background .2s ease;
}

.guia-lecturas a:hover { background: rgba(255, 255, 255, .14); }
.guia-lecturas i { color: #F5A800; }

/* ============================================================
   CALCULADORA
   ============================================================ */
.calc {
  margin: 10px 0 14px;
  border: 1px solid #dfe4ec;
  border-radius: 18px;
  overflow: hidden;
}

.calc [hidden] { display: none !important; }

.calc__modos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: #f1f4f9;
}

.calc__modo {
  border: 0;
  background: transparent;
  padding: 12px 10px;
  font-size: .9rem;
  font-weight: 700;
  color: #5a6470;
  cursor: pointer;
  line-height: 1.25;
}

.calc__modo.is-active {
  background: #fff;
  color: #1B3E96;
  box-shadow: inset 0 -3px 0 #F5A800;
}

.calc__form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 16px;
}

.calc__campo {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: .82rem;
  font-weight: 700;
  color: #5a6470;
}

.calc__campo--material { grid-column: 1 / -1; }

.calc__campo input,
.calc__campo select {
  width: 100%;
  font-size: 1rem;
  padding: 10px 12px;
  border: 1px solid #cfd6e1;
  border-radius: 10px;
  background: #fff;
  color: #14181c;
}

.calc__campo input:focus,
.calc__campo select:focus {
  outline: 2px solid #1B3E96;
  outline-offset: 1px;
}

.calc__resultado {
  background: #0f1e45;
  color: #fff;
  padding: 18px 16px 20px;
}

.calc__principal {
  margin: 0 0 8px !important;
  color: #fff !important;
  font-size: 1.05rem !important;
}

.calc__principal strong { color: #F5A800 !important; font-size: 1.25rem; }

.calc__detalle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.calc__detalle li {
  font-size: .92rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, .82);
}

.calc__detalle strong { color: #fff !important; }

.calc__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #25d366;
  color: #fff !important;
  text-decoration: none !important;
  font-weight: 700;
  padding: 11px 18px;
  border-radius: 999px;
}

.calc__cta:hover { background: #1fb457; }

/* ============================================================
   ARTÍCULOS DEL BLOG (contenido ampliado)
   ============================================================ */
.articulo-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 14px;
  font-size: .88rem;
  color: rgba(255, 255, 255, .8);
}

.articulo-cuerpo h2 {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
  color: #14181c;
  margin: 28px 0 12px;
  scroll-margin-top: 90px;
}

.articulo-cuerpo h2:first-child { margin-top: 0; }

.articulo-cuerpo p {
  font-size: 1.02rem;
  line-height: 1.8;
  color: #4a535e;
  margin: 0 0 14px;
}

.articulo-cuerpo a {
  color: #1B3E96;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.articulo-cta {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 26px;
  padding: 20px;
  border-radius: 18px;
  background: #0f1e45;
  color: #fff;
}

.articulo-cta p { color: rgba(255, 255, 255, .85) !important; margin: 0 !important; }
.articulo-cta strong { color: #fff; }

.articulo-cta__botones {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.articulo-cta__botones a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none !important;
}

.articulo-cta__wa { background: #25d366; color: #fff !important; }
.articulo-cta__servicio { background: #F5A800; color: #14181c !important; }

.articulo-faq {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.articulo-faq details {
  border: 1px solid #e8ebf0;
  border-radius: 14px;
  padding: 12px 16px;
  background: #fbfcfd;
}

.articulo-faq summary {
  cursor: pointer;
  font-weight: 700;
  color: #14181c;
  line-height: 1.4;
}

.articulo-faq details p { margin: 10px 0 0 !important; }

/* ============================================================
   NAVEGACIÓN DEL SILO (partials/arbol-nav.php)
   ============================================================ */
.silo {
  background: #f8f9fb;
  padding: 48px 0;
}

.silo__wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.silo__titulo {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  line-height: 1.1;
  color: #14181c;
  margin: 0 0 14px;
}

.silo__tarjetas {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.silo__tarjetas a {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 44px 16px 18px;
  background: #fff;
  border: 1px solid #e8ebf0;
  border-radius: 16px;
  color: #14181c;
  transition: border-color .2s ease, transform .2s ease;
}

.silo__tarjetas a:hover { border-color: #1B3E96; transform: translateY(-2px); }
.silo__tarjetas strong { font-size: 1.02rem; color: #1B3E96; }
.silo__tarjetas span { font-size: .92rem; color: #5a6470; line-height: 1.5; }
.silo__tarjetas i { position: absolute; right: 18px; top: 50%; transform: translateY(-50%); color: #F5A800; }

.silo__padre {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin: 0 0 14px;
  font-size: .98rem;
  color: #5a6470;
}

.silo__padre a { color: #1B3E96; font-weight: 700; text-decoration: underline; text-underline-offset: 2px; }
.silo__padre i { color: #F5A800; font-size: .8rem; }

.silo__subtitulo {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #5a6470;
  margin: 0 0 10px;
}

.silo__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.silo__chips a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid #dfe4ec;
  color: #1B3E96;
  font-weight: 600;
  font-size: .92rem;
}

.silo__chips a:hover { border-color: #1B3E96; }

/* ============================================================
   ÍNDICE DEL BLOG (paginas/blog.php)
   ============================================================ */
.blog-indice {
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 22px 72px;
  display: flex;
  flex-direction: column;
  gap: 34px;
}

.blog-grupo__cabecera {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 16px;
  margin-bottom: 14px;
  border-bottom: 2px solid #F5A800;
  padding-bottom: 8px;
}

.blog-grupo__cabecera h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  color: #14181c;
  margin: 0;
}

.blog-grupo__cabecera a { color: #1B3E96; font-weight: 700; font-size: .92rem; }

.blog-grupo ul {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.blog-grupo li a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 18px;
  background: #fff;
  border: 1px solid #e8ebf0;
  border-radius: 16px;
  transition: border-color .2s ease;
}

.blog-grupo li a:hover { border-color: #1B3E96; }
.blog-grupo li strong { color: #14181c; font-size: 1.02rem; line-height: 1.35; }
.blog-grupo li span { color: #5a6470; font-size: .92rem; line-height: 1.55; }

/* Enlaces contextuales dentro de secciones existentes de las landings */
.cost-lead a { color: #1B3E96; font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }

/* Panel oscuro de la barra lateral de artículos: el título quedaba oscuro sobre azul */
.content-panel--dark h2 { color: #fff; }

/* ============================================================
   ≥ 768px
   ============================================================ */
@media (min-width: 768px) {
  .guia-section { padding: 90px 0 100px; }
  .guia-wrap { padding: 0 40px; gap: 34px; }
  .guia-indice ol { grid-template-columns: 1fr 1fr; }
  .guia-bloque { padding: 32px; }
  .guia-lista { grid-template-columns: 1fr 1fr; gap: 10px 22px; }
  .guia-lecturas ul { grid-template-columns: 1fr 1fr; }

  .guia-tabla { overflow-x: auto; }
  .guia-tabla thead { display: table-header-group; }
  .guia-tabla tr { display: table-row; border: 0; padding: 0; margin: 0; background: none; border-radius: 0; }
  .guia-tabla th,
  .guia-tabla td {
    display: table-cell;
    padding: 12px 14px;
    border-bottom: 1px solid #e8ebf0;
    vertical-align: top;
    text-align: left;
  }
  .guia-tabla thead th {
    background: #0f1e45;
    color: #fff;
    font-size: .82rem;
    letter-spacing: .03em;
    text-transform: uppercase;
  }
  .guia-tabla thead th:first-child { border-top-left-radius: 12px; }
  .guia-tabla thead th:last-child { border-top-right-radius: 12px; }
  .guia-tabla th[scope="row"] { margin: 0; font-size: .98rem; }
  .guia-tabla td::before { content: none; }
  .guia-tabla tbody th { background: transparent !important; }
  .guia-tabla tbody tr:nth-child(even) { background: #fbfcfd; }

  .silo { padding: 64px 0; }
  .silo__wrap { padding: 0 40px; }
  .silo__tarjetas { grid-template-columns: repeat(2, 1fr); }
  .blog-indice { padding: 64px 40px 96px; }
  .blog-grupo ul { grid-template-columns: repeat(2, 1fr); }

  .calc__form { grid-template-columns: repeat(3, 1fr); }
  .calc__modo { font-size: .95rem; }
  .articulo-cta { flex-direction: row; align-items: center; justify-content: space-between; }
}

@media (min-width: 1280px) {
  .guia-wrap { padding: 0 56px; }
}