/* ==========================================================================
   components.css — nav, botones, tarjetas, hero, formulario, footer, whatsapp
   ========================================================================== */

/* Botones ------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.85em 1.8em;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: 0.01em;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn--outline:hover,
.btn--outline:focus-visible {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

.btn--light {
  background: var(--color-text-inverse);
  color: var(--color-primary-dark);
}

.btn--light:hover,
.btn--light:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Navegación ----------------------------------------------------------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-height);
  z-index: 100;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), height var(--transition);
}

/* :not(.is-open) — backdrop-filter crea un "containing block" para hijos
   position:fixed (spec CSS), lo que rompe el overlay del menú móvil
   (también fixed) cuando el usuario abre el menú con scroll > 0. */
.nav.is-scrolled:not(.is-open) {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__brand {
  font-family: var(--font-heading);
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--color-text-inverse);
  transition: color var(--transition);
}

.nav.is-scrolled .nav__brand {
  color: var(--color-primary-dark);
}

.nav__brand span {
  display: block;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.8;
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-md);
}

.nav__links a {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-inverse);
  transition: color var(--transition-fast), opacity var(--transition-fast);
  opacity: 0.9;
}

.nav.is-scrolled .nav__links a {
  color: var(--color-text);
}

.nav__links a:hover {
  opacity: 1;
  color: var(--color-secondary);
}

.nav.is-scrolled .nav__links a:hover {
  color: var(--color-secondary-dark);
}

/* El botón claro del menú debe leerse también sobre el hero negro */
.nav .nav__links a.btn--light {
  color: var(--color-primary-dark);
  opacity: 1;
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  height: 24px;
  justify-content: center;
  z-index: 101;
}

.nav__toggle span {
  display: block;
  height: 2px;
  background: var(--color-text-inverse);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast), background var(--transition-fast);
}

.nav.is-scrolled .nav__toggle span {
  background: var(--color-primary-dark);
}

.nav.is-open .nav__toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav.is-open .nav__toggle span:nth-child(2) {
  opacity: 0;
}

.nav.is-open .nav__toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* .nav__mobile es HERMANO de <header class="nav">, no descendiente (ver HTML).
   A propósito: si viviera dentro de .nav, el backdrop-filter de
   .nav.is-scrolled convierte a .nav en "containing block" de sus hijos
   position:fixed (regla del spec CSS) — eso rompe el inset:0/translateY del
   menú incluso CERRADO, sin importar is-open. Por eso el selector usa el
   combinador de hermanos (~) en vez de anidamiento. */
.nav__mobile {
  position: fixed;
  inset: 0;
  background: var(--color-primary-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  transform: translateY(-100%);
  transition: transform var(--transition);
  z-index: 99;
}

.nav.is-open ~ .nav__mobile {
  transform: translateY(0);
}

.nav__mobile a {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  color: var(--color-text-inverse);
}

@media (min-width: 860px) {
  .nav__links {
    display: flex;
  }

  .nav__toggle {
    display: none;
  }
}

/* Hero ------------------------------------------------------------------ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-text-inverse);
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero__inner {
  display: grid;
  gap: var(--space-lg);
  align-items: center;
  padding-block: var(--space-xl);
}

.hero__eyebrow {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: var(--space-xs);
}

.hero h1 {
  color: var(--color-text-inverse);
  margin-bottom: var(--space-sm);
}

.hero h1 em {
  font-style: normal;
  color: var(--color-secondary);
}

.hero__lead {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--fs-md);
  max-width: 46ch;
  margin-bottom: var(--space-md);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.hero__credentials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.hero__credential strong {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  color: var(--color-secondary);
}

.hero__credential span {
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.75);
}

.hero__media {
  position: relative;
  justify-self: center;
}

.hero__photo-frame {
  width: min(360px, 78vw);
  aspect-ratio: 3 / 3.4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 6px solid rgba(255, 255, 255, 0.12);
}

.hero__photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 860px) {
  .hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

/* Bio --------------------------------------------------------------------- */
.bio {
  display: grid;
  gap: var(--space-lg);
  align-items: start;
}

.bio__photo img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  object-fit: cover;
  aspect-ratio: 3 / 3.4;
}

.bio__text p {
  margin-bottom: var(--space-sm);
  font-size: var(--fs-md);
}

.bio__text p:last-child {
  margin-bottom: 0;
}

.bio__highlight {
  background: var(--color-accent);
  border-left: 4px solid var(--color-secondary-dark);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
}

.bio__highlight h3 {
  margin-bottom: var(--space-xs);
}

.bio__highlight ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.bio__highlight li {
  display: flex;
  gap: 0.6rem;
  font-size: var(--fs-sm);
  color: var(--color-text);
}

.bio__highlight li::before {
  content: '✓';
  color: var(--color-secondary-dark);
  font-weight: 700;
}

@media (min-width: 860px) {
  .bio {
    grid-template-columns: 0.8fr 1.3fr 1fr;
  }
}

/* Trayectoria (galería) ---------------------------------------------------- */
.trajectory-gallery {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(2, 1fr);
}

.trajectory-gallery__item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.trajectory-gallery__item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

.trajectory-gallery__item span {
  display: block;
  padding: var(--space-sm);
  font-size: var(--fs-sm);
  color: var(--color-text-light);
}

@media (min-width: 640px) {
  .trajectory-gallery {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Línea de tiempo (participación académica) --------------------------------- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.timeline__item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-md);
  padding-left: var(--space-md);
  border-left: 2px solid var(--color-border);
}

.timeline__date {
  font-weight: 700;
  font-size: var(--fs-sm);
  color: var(--color-secondary-dark);
  white-space: nowrap;
}

.timeline__item h3 {
  margin-bottom: 0.3rem;
  font-size: var(--fs-md);
}

.timeline__item .text-muted {
  color: var(--color-text-light);
  font-size: var(--fs-sm);
}

@media (max-width: 640px) {
  .timeline__item {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

/* Especialidades ------------------------------------------------------------ */
.specialties {
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: 1fr;
}

.specialty-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.specialty-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.specialty-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.specialty-card__icon svg {
  width: 24px;
  height: 24px;
}

.specialty-card h3 {
  font-size: var(--fs-md);
  margin-bottom: 0.4rem;
}

.specialty-card p {
  font-size: var(--fs-sm);
}

@media (min-width: 640px) {
  .specialties {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .specialties {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Galería de casos (preview) ------------------------------------------------ */
.cases-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

.case-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  aspect-ratio: 4 / 5;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-card:hover img {
  transform: scale(1.06);
}

.case-card__overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: var(--space-md) var(--space-sm) var(--space-sm);
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.92));
  color: var(--color-text-inverse);
}

.case-card__tag {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 0.3rem;
}

.case-card__overlay h3 {
  color: var(--color-text-inverse);
  font-size: var(--fs-md);
}

.cases-cta {
  text-align: center;
  margin-top: var(--space-lg);
}

@media (min-width: 640px) {
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .cases-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Testimonios ---------------------------------------------------------------- */
.testimonials-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

.testimonial-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md) var(--space-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.testimonial-card__quote {
  display: block;
  font-family: var(--font-heading);
  font-size: 3rem;
  line-height: 1;
  color: var(--color-secondary-dark);
  margin-bottom: var(--space-xs);
}

.testimonial-card p {
  color: var(--color-text);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-md);
}

.testimonial-card footer {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-xs);
}

.testimonial-card cite {
  font-style: normal;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.testimonial-card footer span {
  font-size: var(--fs-xs);
  color: var(--color-text-light);
}

@media (min-width: 860px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* FAQ -------------------------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 780px;
  margin-inline: auto;
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--color-primary-dark);
  padding: 0.4em 2em 0.4em 0;
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--color-secondary-dark);
  transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-item p {
  padding-top: var(--space-xs);
  font-size: var(--fs-sm);
}

/* Publicaciones -------------------------------------------------------------- */
.publications-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-width: 760px;
  margin-inline: auto;
  text-align: center;
}

.publications-card h3 {
  color: var(--color-text-inverse);
}

.publications-card p {
  color: rgba(255, 255, 255, 0.82);
}

.publications-card .btn {
  align-self: center;
}

/* Contacto -------------------------------------------------------------------- */
.contact {
  display: grid;
  gap: var(--space-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-field label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-light);
}

.form-field input,
.form-field textarea {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75em 1em;
  font-family: var(--font-body);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-accent);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  justify-content: center;
}

.contact-info__item {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.contact-info__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-info__icon svg {
  width: 20px;
  height: 20px;
}

.contact-info h4 {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text);
}

.contact-info p {
  font-size: var(--fs-sm);
}

@media (min-width: 860px) {
  .contact {
    grid-template-columns: 1.2fr 1fr;
  }
}

/* WhatsApp flotante -------------------------------------------------------------- */
.whatsapp-float {
  position: fixed;
  right: var(--space-sm);
  bottom: var(--space-sm);
  z-index: 90;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-whatsapp);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.whatsapp-float svg {
  width: 30px;
  height: 30px;
}

.whatsapp-float:hover,
.whatsapp-float:focus-visible {
  transform: scale(1.08);
  background: var(--color-whatsapp-dark);
}

/* Footer ------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.75);
  padding-block: var(--space-lg);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
  text-align: center;
}

.site-footer__brand {
  font-family: var(--font-heading);
  font-size: var(--fs-md);
  color: var(--color-text-inverse);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  font-size: var(--fs-sm);
}

.site-footer__links a:hover {
  color: var(--color-secondary);
}

.site-footer__legal {
  font-size: var(--fs-xs);
  opacity: 0.7;
}

@media (min-width: 860px) {
  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* Teasers de portada (home compacta) -------------------------------------------- */
.teaser {
  display: grid;
  gap: var(--space-md);
  align-items: center;
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
}

.teaser p {
  font-size: var(--fs-md);
}

.teaser-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

.specialties-teaser {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg) var(--space-md);
  margin-bottom: var(--space-lg);
}

.specialties-teaser__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  width: 130px;
  text-align: center;
}

.specialties-teaser__item .specialty-card__icon {
  margin-bottom: 0;
}

.specialties-teaser__item span {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

.testimonial-spotlight {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
}

.testimonial-spotlight .testimonial-card__quote {
  font-size: 3.5rem;
}

.testimonial-spotlight footer {
  justify-content: center;
  align-items: center;
  border-top: none;
}

.contact-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
  background: var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-width: 860px;
  margin-inline: auto;
}

.contact-cta__info h3 {
  margin-bottom: 0.3rem;
}

.contact-cta__info p {
  font-size: var(--fs-sm);
}

.contact-cta__actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Páginas internas (/casos) — cabecera, breadcrumb, slider antes/después --------- */
.page-hero {
  background: linear-gradient(160deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-text-inverse);
  padding-top: calc(var(--nav-height) + var(--space-lg));
  padding-bottom: var(--space-lg);
  text-align: center;
}

.page-hero h1 {
  color: var(--color-text-inverse);
}

.page-hero p {
  color: rgba(255, 255, 255, 0.82);
  max-width: 54ch;
  margin-inline: auto;
  margin-top: var(--space-xs);
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.breadcrumb a:hover {
  color: var(--color-secondary);
}

.case-detail-grid {
  display: grid;
  gap: var(--space-lg);
}

.case-slider {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

img-comparison-slider {
  --divider-width: 3px;
  --divider-color: var(--color-secondary);
  --default-handle-color: var(--color-secondary);
  width: 100%;
  aspect-ratio: 4 / 3;
}

img-comparison-slider img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-slider__caption {
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-light);
  padding-top: var(--space-xs);
}

.case-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.case-meta__list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.case-meta__list li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-block: 0.5rem;
  border-bottom: 1px dashed var(--color-border);
  font-size: var(--fs-sm);
}

.case-meta__list li strong {
  color: var(--color-text);
}

.case-body {
  margin-top: var(--space-lg);
  max-width: 74ch;
}

.case-body p {
  margin-bottom: var(--space-sm);
  font-size: var(--fs-md);
}

.case-outlink {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: var(--color-accent);
  border-radius: var(--radius-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  justify-content: space-between;
}

.case-outlink p {
  color: var(--color-text);
  font-size: var(--fs-sm);
  max-width: 46ch;
}

.case-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 860px) {
  .case-detail-grid {
    grid-template-columns: 1.3fr 1fr;
    align-items: start;
  }
}

/* Índice de galería (/casos/index.html) filtros ------------------------------------ */
.filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: var(--space-lg);
}

.filter-btn {
  padding: 0.5em 1.2em;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-border);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-light);
  transition: all var(--transition-fast);
}

.filter-btn.is-active,
.filter-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
}