/* =============================================================
   Casona San José — Diferenciadores (Home, sección 4)
   "Por qué Casona" — 5 photo cards con editorial stagger.
   Grid 5-col → 2-col → 1-col. Aspect-ratio 4:5 (retrato).
   Referencia: Diferenciadores.jsx del design system.
   Dials: motion 3-4, density 2-3, variance 5-6.
   ============================================================= */


/* -----------------------------------------------------------
   SECCIÓN
   ----------------------------------------------------------- */

.csn-difs {
  padding-block: var(--section-padding-y);
  background: var(--bg-alt);
}


/* -----------------------------------------------------------
   HEAD — eyebrow + título (5fr) / lede (7fr)
   ----------------------------------------------------------- */

.csn-difs__head {
  max-width: var(--container-max);
  margin-inline: auto;
  margin-block-end: 72px;              /* valor del kit — entre --space-8 y --space-9 */
  padding-inline: var(--section-padding-x);
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: var(--space-7);
  align-items: end;
}

@media (max-width: 880px) {
  .csn-difs__head {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

.csn-difs__head-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.csn-difs__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-noche);
  text-wrap: balance;
  margin: 0;
}

.csn-difs__title em {
  font-style: italic;
}

.csn-difs__lede {
  font-family: var(--font-body);
  font-size: var(--type-body-md);
  line-height: var(--leading-relaxed);
  color: var(--color-noche-suave);
  max-width: 52ch;
  margin: 0;
}


/* -----------------------------------------------------------
   GRID — 5 columnas
   ----------------------------------------------------------- */

.csn-difs__grid {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--section-padding-x);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* Tablet — 2 columnas */
@media (max-width: 1080px) {
  .csn-difs__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
  }
}

/* Mobile — 1 columna */
@media (max-width: 540px) {
  .csn-difs__grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* Editorial stagger: tarjetas 2 y 4 bajan para ritmo asimétrico */
@media (min-width: 1081px) {
  .csn-dif:nth-child(2),
  .csn-dif:nth-child(4) {
    margin-block-start: var(--space-7);  /* 48px */
  }
}


/* -----------------------------------------------------------
   TARJETA
   ----------------------------------------------------------- */

.csn-dif {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}


/* -----------------------------------------------------------
   IMAGEN — aspect-ratio 4:5 (retrato)
   border-radius: 0 — regla dura del design system
   ----------------------------------------------------------- */

.csn-dif__media {
  aspect-ratio: 4 / 5;
  width: 100%;                         /* garantiza cálculo correcto del aspect-ratio */
  overflow: hidden;
  position: relative;
  background-color: var(--color-borde);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  filter: saturate(1.05);
  border-radius: var(--radius-img);    /* 0px — regla dura */
}


/* Marcador visual de placeholder — visible en local, sin efecto en producción */
.csn-dif__media[data-placeholder]::before {
  content: attr(data-placeholder);
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
  z-index: 1;
  font-family: var(--font-body);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-blanco) 70%, transparent);
  background: color-mix(in srgb, var(--color-noche) 55%, transparent);
  padding: 2px 6px;
  pointer-events: none;
}


/* -----------------------------------------------------------
   TEXTOS DE LA TARJETA
   ----------------------------------------------------------- */

/* Número ordinal — Cormorant, acento verde */
.csn-dif__n {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 24px;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--accent);
}

/* Título del diferenciador */
.csn-dif__t {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--type-display-sm);
  letter-spacing: var(--tracking-tight);
  line-height: 1.2;
  color: var(--color-noche);
  margin: 0;
}

/* Descripción corta */
.csn-dif__d {
  font-family: var(--font-body);
  font-size: var(--type-body-sm);
  line-height: var(--leading-normal);
  color: var(--color-noche-suave);
  margin: 0;
}


/* -----------------------------------------------------------
   PREFERS-REDUCED-MOTION
   ----------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .csn-dif {
    transition: none;
  }
}