/* Índice de la sección «Así instalamos tu césped» (va DESPUÉS de /css/styles.css). */

.ai-hub { padding-top: 130px; }
.ai-hub .miga { margin-bottom: 34px; }
.ai-hub .section-head { margin-bottom: 28px; }

.ai-aviso {
  max-width: 720px; margin: 0 auto 44px; padding: 12px 18px;
  text-align: center; font-size: 14px; line-height: 1.55; color: var(--on-dark);
  border: 1px solid var(--hairline-gold); border-radius: 999px; background: rgba(12, 17, 12, 0.5);
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 22px;
}
.ai-grid > :nth-child(-n+3) { grid-column: span 2; }
.ai-grid > :nth-child(n+4) { grid-column: span 3; }

.ai-tarjeta {
  display: flex; flex-direction: column;
  background: var(--pine);
  border: 1px solid var(--hairline-cream);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.ai-tarjeta:hover { transform: translateY(-5px); border-color: var(--hairline-gold); box-shadow: var(--shadow-card); }
.ai-tarjeta-foto { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--ink-2); }
.ai-tarjeta-foto img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.ai-tarjeta:hover .ai-tarjeta-foto img { transform: scale(1.04); }
.ai-tarjeta-sello {
  position: absolute; right: 12px; top: 12px; padding: 4px 10px; border-radius: 999px;
  font-size: 11px; letter-spacing: 0.06em; color: var(--cream);
  background: rgba(12, 17, 12, 0.6); border: 1px solid var(--hairline-gold);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
}
.ai-tarjeta-texto { flex: 1; display: flex; flex-direction: column; gap: 8px; padding: 22px 24px 24px; }
.ai-tarjeta-num { font-size: 12px; font-weight: 700; letter-spacing: 0.24em; color: var(--gold); }
.ai-tarjeta-nombre { margin: 0; font-family: var(--font-display); font-size: 28px; font-weight: 600; line-height: 1.1; color: var(--on-dark-strong); }
.ai-tarjeta-linea { flex: 1; margin: 0; font-size: 14.5px; line-height: 1.55; color: var(--on-dark); }
.ai-tarjeta-ver { margin-top: 6px; font-size: 13px; font-weight: 700; letter-spacing: 0.06em; color: var(--gold); }
.ai-tarjeta:hover .ai-tarjeta-ver { color: var(--gold-2); }

.ai-cta { margin-top: 56px; text-align: center; display: grid; justify-items: center; gap: 16px; }
.ai-cta p { margin: 0; font-family: var(--font-display); font-size: clamp(26px, 3vw, 34px); line-height: 1.15; }

@media (max-width: 980px) {
  .ai-grid { grid-template-columns: 1fr 1fr; }
  .ai-grid > :nth-child(n) { grid-column: span 1; }
  .ai-grid > :last-child { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .ai-hub { padding-top: 104px; }
  .ai-aviso { border-radius: 14px; font-size: 13.5px; margin-bottom: 32px; }
  .ai-grid { grid-template-columns: 1fr; gap: 18px; }
  .ai-grid > :last-child { grid-column: auto; }
  .ai-tarjeta-texto { padding: 18px 18px 20px; }
  .ai-tarjeta-nombre { font-size: 25px; }
}
@media (prefers-reduced-motion: reduce) {
  .ai-tarjeta, .ai-tarjeta-foto img { transition: none; }
}

/* H1 con el antetítulo dentro (mismo aspecto que .eyebrow + .section-title) */
.ai-hub h1 .eyebrow { display: block; font-family: var(--font-body); line-height: 1.4; }
.ai-h1-titulo { display: block; }

/* ---------- texto indexable: qué cambia de un espacio a otro + preguntas ---------- */
.ai-saber { margin-top: 88px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.ai-saber h2 { margin: 0 0 18px; font-family: var(--font-display); font-size: clamp(28px, 3vw, 38px); line-height: 1.1; }
.ai-saber h2 em { font-style: italic; color: var(--grass); }
.ai-cambia { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.ai-cambia li { position: relative; padding-left: 22px; color: var(--on-dark); line-height: 1.6; }
.ai-cambia li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 8px; height: 8px; border-radius: 2px; background: var(--gold); transform: rotate(45deg); }
.ai-cambia strong { color: var(--on-dark-strong); font-weight: 700; }
.ai-faq { display: grid; gap: 10px; }
.ai-faq details { border: 1px solid var(--hairline-cream); border-radius: 12px; background: var(--pine); }
.ai-faq summary { cursor: pointer; list-style: none; padding: 16px 48px 16px 18px; position: relative; font-weight: 700; color: var(--on-dark-strong); }
.ai-faq summary::-webkit-details-marker { display: none; }
.ai-faq summary::after { content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); color: var(--gold); font-size: 22px; font-weight: 400; }
.ai-faq details[open] summary::after { content: "–"; }
.ai-faq details p { margin: 0; padding: 0 18px 18px; color: var(--on-dark); }
.ai-faq h3 { display: inline; font: inherit; }
@media (max-width: 900px) { .ai-saber { grid-template-columns: 1fr; gap: 44px; margin-top: 64px; } }