/* =========================================================
   Sección Especialidades
   (usa las variables definidas en styles.css)
   ========================================================= */

.esp {
  background: var(--white);
  padding: clamp(56px, 8vw, 120px) var(--pad-x);
  scroll-margin-top: var(--header-h);
}

.esp__inner { max-width: 1500px; margin: 0 auto; }

/* ---------- Encabezado ---------- */
.esp__head { max-width: 900px; }

.esp__title {
  margin: 0;
  font-size: clamp(1.8rem, 3.6vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--navy);
}

.esp__lead {
  margin: clamp(12px, 1.6vw, 20px) 0 0;
  max-width: 44em;
  font-size: clamp(.98rem, 1.3vw, 1.2rem);
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- Tarjetas ---------- */
.esp__grid {
  margin-top: clamp(32px, 5vw, 72px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 36px);
}

.esp-card {
  --mx: 50%;
  --my: 50%;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  padding: clamp(26px, 3vw, 44px);
  background: var(--sky);
  color: var(--navy);
  transition: transform .45s var(--ease), box-shadow .45s ease;
}

/* Luz que sigue al cursor */
.esp-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(380px circle at var(--mx) var(--my), rgba(58, 123, 192, .18), transparent 65%);
  opacity: 0;
  transition: opacity .35s ease;
}
/* Barra inferior que se dibuja al hover */
.esp-card::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 4px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s var(--ease);
}
.esp-card:hover,
.esp-card:focus-within {
  transform: translateY(-8px);
  box-shadow: 0 22px 44px rgba(23, 54, 95, .18);
}
.esp-card:hover::before { opacity: 1; }
.esp-card:hover::after,
.esp-card:focus-within::after { transform: scaleX(1); }

.esp-card__num {
  font-size: 1rem;
  font-weight: 800;
  color: var(--blue);
}

.esp-card__title {
  margin: clamp(20px, 2.6vw, 36px) 0 0;
  font-size: clamp(1.02rem, 1.4vw, 1.3rem);
  font-weight: 800;
  line-height: 1.3;
  text-transform: uppercase;
  letter-spacing: .01em;
}

.esp-card__list {
  margin: clamp(22px, 3vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 1.8vw, 22px);
  flex: 1;                         /* empuja el link al fondo */
  align-content: start;
}
.esp-card__list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: clamp(.95rem, 1.15vw, 1.08rem);
  line-height: 1.45;
}
.esp-card__list li::before {       /* guion que se alarga al hover */
  content: "";
  flex: none;
  width: 14px;
  height: 2px;
  background: currentColor;
  transform: translateY(-.3em);
  transition: width .4s var(--ease);
}
.esp-card:hover .esp-card__list li::before { width: 24px; }
.esp-card:hover .esp-card__list li:nth-child(2)::before { transition-delay: .06s; }
.esp-card:hover .esp-card__list li:nth-child(3)::before { transition-delay: .12s; }

.esp-card__link,
.esp-banner__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  align-self: flex-start;
  font-weight: 800;
  font-size: .9rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--blue);
}
.esp-card__link { margin-top: clamp(28px, 3.4vw, 48px); padding: 6px 0; }

.esp-card__link svg,
.esp-banner__link svg {
  width: 18px; height: 18px;
  transition: transform .35s var(--ease);
}
.esp-card__link:hover svg,
.esp-banner__link:hover svg { transform: translateX(7px); }

/* Tarjeta oscura (central) */
.esp-card--dark { background: var(--navy); color: var(--white); }
.esp-card--dark .esp-card__num,
.esp-card--dark .esp-card__link { color: #8dc0f5; }
.esp-card--dark::before {
  background: radial-gradient(380px circle at var(--mx) var(--my), rgba(141, 192, 245, .22), transparent 65%);
}
.esp-card--dark::after { background: #8dc0f5; }

/* ---------- Banner VPH ---------- */
.esp-banner {
  position: relative;
  overflow: hidden;
  margin-top: clamp(24px, 4vw, 56px);
  padding: clamp(24px, 3vw, 40px) clamp(24px, 3.4vw, 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px 40px;
  background: #e8f0f8;
}
.esp-banner::before {              /* franja lateral que crece al hover */
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 5px;
  background: var(--blue);
  transition: width .45s var(--ease);
}
.esp-banner:hover::before { width: 12px; }

.esp-banner__title {
  margin: 0;
  font-size: clamp(1.05rem, 1.7vw, 1.5rem);
  font-weight: 800;
  text-transform: uppercase;
  line-height: 1.3;
  color: var(--navy);
}
.esp-banner__desc {
  margin: 10px 0 0;
  font-size: clamp(.92rem, 1.1vw, 1.05rem);
  line-height: 1.6;
  color: var(--text-soft);
}
.esp-banner__link {
  flex: none;
  align-self: center;
  padding: 10px 4px;
  font-size: .95rem;
}
/* ---------- Animación de entrada / salida ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .45s ease, transform .45s var(--ease), box-shadow .45s ease;
  transition-delay: 0s;              /* salida: rápida */
}
.js .esp.is-in [data-reveal] {
  opacity: 1;
  transform: none;
  transition-duration: .8s, .9s, .45s;
  transition-delay: var(--d, 0s);
}
/* Tras la entrada, el hover de las tarjetas responde sin retraso */
.js .esp.is-in .esp-card:hover,
.js .esp.is-in .esp-card:focus-within { transform: translateY(-8px); transition-delay: 0s; transition-duration: .45s; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .esp__grid { grid-template-columns: 1fr; }
  .esp-card__list { flex: none; }
  .esp-card:hover { transform: none; }
}

@media (max-width: 640px) {
  .esp-banner { flex-direction: column; align-items: flex-start; }
  .esp-banner__link { align-self: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  .esp-card:hover, .esp-card:focus-within { transform: none; }
}