/* ========================================
   CASE STUDY
   Estilos compartidos por las páginas de proyecto
   (Cobranza y Crédito Operacional). Estructura:
   hero · desafío y solución · capacidades · galería ·
   tecnologías y CTA.
======================================== */

/* ========================================
   HERO
======================================== */

.cs-hero {
  padding: 64px 0 88px;
}

.cs-hero__back {
  display: inline-flex;
  align-items: center;

  margin-bottom: 28px;

  color: var(--color-text-secondary);

  font-size: 15px;
  font-weight: 600;
  text-decoration: none;

  transition:
    color 0.2s ease,
    transform 0.2s ease;
}

.cs-hero__back:hover,
.cs-hero__back:focus-visible {
  color: var(--color-primary-light);

  transform: translateX(-4px);
}

.cs-hero__header {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: end;

  gap: 24px 56px;
}

.cs-hero__title {
  margin: 0;

  color: var(--color-text-primary);

  font-size: clamp(40px, 4.4vw, 60px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.035em;
}

.cs-hero__title span {
  display: block;

  color: var(--color-primary-light);
}

.cs-hero__description {
  margin: 0;

  color: var(--color-text-secondary);

  font-size: 18px;
  line-height: 1.7;
}

/* Alcance de la plataforma: dato de la demo, no un resultado */

.cs-hero__facts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;

  gap: 10px 20px;

  margin: 22px 0 0;
  padding: 0;

  color: var(--color-text-secondary);

  font-size: 14px;

  list-style: none;
}

.cs-hero__facts strong {
  color: var(--color-text-primary);

  font-weight: 700;
}

.cs-hero__visual {
  margin: 48px 0 0;
}

.cs-hero__caption {
  margin-top: 14px;

  color: var(--color-text-secondary);

  font-size: 13px;
}

/* ========================================
   MARCO DE CAPTURAS
   El enlace abre el WebP completo para ampliarlo
======================================== */

.cs-frame {
  position: relative;

  display: block;

  padding: 8px;

  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 18px;

  background-color: var(--color-surface);

  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.35);

  transition: border-color 0.2s ease;
}

.cs-frame:hover,
.cs-frame:focus-visible {
  border-color: rgba(59, 130, 246, 0.55);
}

.cs-frame:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 3px;
}

.cs-frame img {
  display: block;

  width: 100%;
  height: auto;

  border-radius: 10px;
}

/* Dashboards claros (Cobranza): un filete sutil separa el lienzo
   blanco del marco oscuro */

.case-study-page--light .cs-frame img {
  outline: 1px solid rgba(148, 163, 184, 0.28);
  outline-offset: -1px;
}

.cs-frame__hint {
  position: absolute;
  right: 18px;
  bottom: 18px;

  padding: 5px 11px;

  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: 999px;

  background-color: rgba(8, 13, 24, 0.85);

  color: var(--color-text-primary);

  font-size: 12px;
  font-weight: 600;

  /* Solo al pasar o enfocar: nunca tapa cifras del dashboard */
  opacity: 0;

  transition: opacity 0.2s ease;
}

.cs-frame:hover .cs-frame__hint,
.cs-frame:focus-visible .cs-frame__hint {
  opacity: 1;
}

/* ========================================
   SECCIONES
======================================== */

.cs-section {
  padding: 88px 0;

  border-top: 1px solid rgba(148, 163, 184, 0.11);
}

.cs-section__title {
  max-width: 760px;

  margin: 0;

  color: var(--color-text-primary);

  font-size: clamp(32px, 3.2vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

/* ========================================
   DESAFÍO Y SOLUCIÓN
   Dos columnas editoriales separadas por un filete
======================================== */

.cs-brief {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cs-brief__col {
  padding-right: 48px;
}

.cs-brief__col + .cs-brief__col {
  padding: 0 0 0 48px;

  border-left: 1px solid rgba(148, 163, 184, 0.14);
}

.cs-brief__label {
  display: block;

  margin-bottom: 14px;

  color: var(--color-primary-light);

  font-size: 12px;
  font-weight: 700;

  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.cs-brief__col + .cs-brief__col .cs-brief__label {
  color: var(--color-accent);
}

.cs-brief__title {
  margin: 0 0 16px;

  color: var(--color-text-primary);

  font-size: clamp(24px, 2.2vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.cs-brief p {
  margin: 0;

  color: var(--color-text-secondary);

  font-size: 17px;
  line-height: 1.75;
}

/* ========================================
   CAPACIDADES
   Lista tipográfica con icono; sin cards
======================================== */

.cs-capabilities {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));

  gap: 0 40px;

  margin: 44px 0 0;
  padding: 0;

  list-style: none;
}

.cs-capability {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-content: start;

  column-gap: 18px;

  padding: 28px 0;

  border-top: 1px solid rgba(148, 163, 184, 0.12);
}

.cs-capability__icon {
  grid-row: span 2;

  display: grid;
  place-items: center;

  width: 44px;
  height: 44px;

  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 12px;

  background-color: rgba(37, 99, 235, 0.08);

  color: var(--color-primary-light);
}

.cs-capability__icon .icon {
  width: 22px;
  height: 22px;
}

.cs-capability h3 {
  margin: 0 0 6px;

  color: var(--color-text-primary);

  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
}

.cs-capability p {
  margin: 0;

  color: var(--color-text-secondary);

  font-size: 15px;
  line-height: 1.6;
}

/* ========================================
   GALERÍA
   Imagen y texto alternados; la imagen enlaza al WebP completo
======================================== */

.cs-gallery {
  display: grid;

  gap: 72px;

  margin-top: 48px;
}

.cs-shot {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  align-items: center;

  gap: 48px;

  margin: 0;
}

.cs-shot:nth-child(even) {
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
}

.cs-shot:nth-child(even) .cs-frame {
  order: 2;
}

.cs-shot__index {
  display: block;

  margin-bottom: 10px;

  color: var(--color-primary-light);

  font-size: 13px;
  font-weight: 700;

  letter-spacing: 0.08em;
}

.cs-shot h3 {
  margin: 0 0 12px;

  color: var(--color-text-primary);

  font-size: 24px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.cs-shot p {
  margin: 0;

  color: var(--color-text-secondary);

  font-size: 16px;
  line-height: 1.7;
}

/* ========================================
   TECNOLOGÍAS Y CTA
======================================== */

.cs-closing {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  align-items: center;

  gap: 48px;

  padding-bottom: 96px;
}

.cs-closing__lead {
  margin: 0;

  color: var(--color-text-secondary);

  font-size: 16px;
  line-height: 1.7;
}

.cs-tech {
  display: flex;
  flex-wrap: wrap;

  gap: 10px;

  margin: 22px 0 0;
  padding: 0;

  list-style: none;
}

.cs-tech li {
  padding: 8px 14px;

  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 999px;

  color: var(--color-text-primary);

  font-size: 14px;
  font-weight: 600;
}

.cs-cta {
  padding: 44px 48px;

  border: 1px solid rgba(59, 130, 246, 0.24);
  border-radius: 24px;

  background-color: rgba(17, 24, 39, 0.72);
}

.cs-cta h2 {
  margin: 0;

  color: var(--color-text-primary);

  font-size: clamp(28px, 2.6vw, 36px);
  line-height: 1.12;
  letter-spacing: -0.025em;
}

.cs-cta h2 span {
  color: var(--color-primary-light);
}

.cs-cta p {
  margin: 16px 0 0;

  color: var(--color-text-secondary);

  font-size: 16px;
  line-height: 1.7;
}

.cs-cta .contact__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  margin-top: 26px;
}

/* ========================================
   RESPONSIVE
======================================== */

@media (max-width: 900px) {
  .cs-hero__header,
  .cs-brief,
  .cs-shot,
  .cs-shot:nth-child(even),
  .cs-closing {
    grid-template-columns: minmax(0, 1fr);
  }

  .cs-hero__visual {
    margin-top: 40px;
  }

  .cs-brief__col {
    padding-right: 0;
  }

  .cs-brief__col + .cs-brief__col {
    margin-top: 36px;
    padding: 36px 0 0;

    border-top: 1px solid rgba(148, 163, 184, 0.14);
    border-left: 0;
  }

  .cs-capabilities {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cs-gallery {
    gap: 56px;
  }

  .cs-shot {
    gap: 24px;
  }

  .cs-shot:nth-child(even) .cs-frame {
    order: 0;
  }
}

@media (max-width: 640px) {
  .cs-hero {
    padding: 40px 0 64px;
  }

  .cs-hero__back {
    margin-bottom: 22px;

    font-size: 14px;
  }

  .cs-hero__title {
    font-size: 38px;
  }

  .cs-hero__description {
    font-size: 16px;
  }

  .cs-hero__visual {
    margin-top: 32px;
  }

  .cs-section {
    padding: 64px 0;
  }

  .cs-section__title {
    font-size: 30px;
  }

  .cs-brief p {
    font-size: 16px;
  }

  .cs-capabilities {
    grid-template-columns: minmax(0, 1fr);

    margin-top: 32px;
  }

  .cs-capability {
    padding: 22px 0;
  }

  .cs-frame {
    padding: 5px;

    border-radius: 14px;
  }

  .cs-frame img {
    border-radius: 9px;
  }

  .cs-frame__hint {
    right: 12px;
    bottom: 12px;
  }

  .cs-gallery {
    gap: 48px;

    margin-top: 32px;
  }

  .cs-shot h3 {
    font-size: 21px;
  }

  .cs-shot p {
    font-size: 15px;
  }

  .cs-closing {
    gap: 36px;

    padding-bottom: 64px;
  }

  .cs-cta {
    padding: 30px 22px;

    border-radius: 18px;
  }

  .cs-cta h2 {
    font-size: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cs-hero__back,
  .cs-frame,
  .cs-frame__hint {
    transition: none;
  }

  .cs-hero__back:hover,
  .cs-hero__back:focus-visible {
    transform: none;
  }
}