/* =========================================================
   PÁGINA DE PROYECTOS — R&A
   Complementa sections.css con estilos específicos
========================================================= */

/* === HERO DE PÁGINA (compacto, no full-bleed) === */
.page-hero {
  background-color: var(--color-nogal);
  color: var(--color-marfil);
  padding-top: calc(var(--header-height-mobile) + var(--space-xl));
  padding-bottom: var(--space-xl);
}
@media (min-width: 768px) {
  .page-hero {
    padding-top: calc(var(--header-height-desktop) + var(--space-2xl));
    padding-bottom: var(--space-2xl);
  }
}
.page-hero__inner { max-width: 720px; }
.page-hero__title {
  font-size: var(--fs-h1);
  font-weight: var(--fw-light);
  color: var(--color-marfil);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}
.page-hero__subtitle {
  font-size: var(--fs-body-lg);
  color: var(--color-marfil-sombra);
  max-width: 60ch;
}

/* === FILTROS === */
.projects-filter {
  position: sticky;
  top: var(--header-height-mobile);
  z-index: 30;
  background-color: var(--color-marfil);
  border-bottom: 1px solid var(--color-marfil-sombra);
  padding-block: var(--space-sm);
}
@media (min-width: 768px) {
  .projects-filter { top: var(--header-height-desktop); }
}

.projects-filter__list {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--space-sm);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 2px;
}
.projects-filter__list::-webkit-scrollbar { display: none; }

.projects-filter__btn {
  flex-shrink: 0;
  padding: 0.5rem 1rem;
  font-family: var(--font-family-base);
  font-size: var(--fs-caption);
  font-weight: var(--fw-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-nogal-texto);
  background-color: transparent;
  border: 1px solid var(--color-marfil-sombra);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--transition-color),
              background-color var(--transition-color),
              border-color var(--transition-color);
}
.projects-filter__btn:hover {
  color: var(--color-nogal);
  border-color: var(--color-nogal);
}
.projects-filter__btn.is-active {
  color: var(--color-marfil);
  background-color: var(--color-nogal);
  border-color: var(--color-nogal);
}

/* === GRID DE PROYECTOS === */
.projects-list__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}
@media (min-width: 600px) {
  .projects-list__grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
}
@media (min-width: 1024px) {
  .projects-list__grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
}

.project-item {
  transition: opacity var(--transition-color), transform var(--transition-color);
}
.project-item.is-hidden {
  display: none;
}

.project-item__link {
  display: block;
  background-color: var(--color-blanco-madera);
  overflow: hidden;
  transition: box-shadow var(--transition-color);
}
.project-item__link:hover { box-shadow: var(--shadow-soft); }

.project-item__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-marfil-sombra);
}
.project-item__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  cursor: zoom-in;
  transition: transform var(--transition-transform);
}
.project-item:hover .project-item__media img { transform: scale(1.03); }

.project-item__body { padding: var(--space-md); }

.project-item__overline {
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ocre-laton);
  margin-bottom: var(--space-2xs);
}
.project-item__title {
  font-size: var(--fs-h4);
  font-weight: var(--fw-medium);
  color: var(--color-nogal);
  margin-bottom: var(--space-2xs);
  transition: color var(--transition-color);
}
.project-item:hover .project-item__title { color: var(--color-terracota); }

.project-item__meta {
  font-size: var(--fs-small);
  color: var(--color-nogal-texto);
}

/* === ESTADO VACÍO === */
.projects-list__empty {
  text-align: center;
  font-size: var(--fs-body-lg);
  color: var(--color-nogal-texto);
  padding-block: var(--space-2xl);
}

/* === ACCESIBILIDAD: focus sobre los botones de filtro === */
.projects-filter__btn:focus-visible {
  outline: 2px solid var(--color-terracota);
  outline-offset: 2px;
}

/* === LIGHTBOX === */
.lightbox {
  border: none;
  padding: 0;
  background: transparent;
  max-width: none;
  max-height: none;
}
.lightbox[open] {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  margin: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox::backdrop {
  background-color: rgba(24, 24, 23, 0.88);
}
.lightbox[open] { animation: lightbox-in 0.2s ease-out; }
@keyframes lightbox-in {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

.lightbox__img {
  display: block;
  flex: 0 1 auto;
  width: auto;
  height: auto;
  max-width: min(92vw, 1200px);
  max-height: 88vh;
  object-fit: contain;
  background-color: transparent;
  border-radius: var(--radius-sm);
  box-shadow: 0 24px 64px rgba(24, 24, 23, 0.5);
}

.lightbox__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-marfil);
  background-color: var(--color-nogal);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: background-color var(--transition-color);
}
.lightbox__close:hover {
  background-color: var(--color-terracota);
}
.lightbox__close:focus-visible {
  outline: 2px solid var(--color-marfil);
  outline-offset: 2px;
}