/* ==========================================================================
   UPH CONSTRUCCIONES — MODAL DE PROYECTO & VISOR CINEMÁTICO (LIGHTBOX)
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(6, 6, 6, 0.94);
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.4s;
  padding: clamp(1rem, 3vw, 2.5rem);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.project-modal {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-gold-border);
  border-radius: var(--radius-sm);
  width: 100%;
  max-width: 1380px;
  height: 92vh;
  max-height: 920px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.9), 0 0 50px rgba(201, 167, 81, 0.15);
  transform: scale(0.96) translateY(20px);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.modal-backdrop.active .project-modal {
  transform: scale(1) translateY(0);
}

/* Encabezado del Modal */
.modal-header {
  padding: 1.5rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-card);
  flex-shrink: 0;
}

.modal-header-info {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.modal-title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  color: #ffffff;
  letter-spacing: 0.08em;
}

.modal-header-badges {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.modal-status-badge {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.modal-status-badge.status-construccion {
  background: var(--color-gold);
  color: #080808;
}

.modal-status-badge.status-entregado {
  background: #ffffff;
  color: #080808;
}

.modal-location {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.modal-location svg {
  width: 14px;
  height: 14px;
  fill: var(--color-gold);
}

/* Botón Cerrar */
.modal-close-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #ffffff;
  transition: var(--transition-normal);
}

.modal-close-btn:hover {
  border-color: var(--color-gold);
  background: rgba(201, 167, 81, 0.15);
  color: var(--color-gold);
  transform: rotate(90deg);
}

.modal-close-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Contenido Principal del Modal (Split Layout) */
.modal-body-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  flex-grow: 1;
  overflow: hidden;
}

/* Panel Izquierdo: Visor de Galería Fotográfica */
.modal-gallery-panel {
  display: flex;
  flex-direction: column;
  background: #090909;
  border-right: 1px solid var(--color-border);
  overflow: hidden;
  position: relative;
}

/* Selector Multimedia (Fotos / Video) */
.media-tabs {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: #0e0e0e;
  border-bottom: 1px solid var(--color-border);
}

.media-tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-muted);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-normal);
}

.media-tab-btn.active {
  background: var(--color-bg-surface);
  border-color: var(--color-gold-border);
  color: var(--color-gold);
}

/* Visor de Imagen Principal */
.main-viewer {
  flex-grow: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #050505;
}

.main-viewer-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.3s ease, transform 0.4s ease;
  user-select: none;
}

.main-viewer-video {
  width: 100%;
  height: 100%;
  border: none;
  display: none;
}

.main-viewer-video.active {
  display: block;
}

/* Controles de Navegación */
.viewer-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background: rgba(12, 12, 12, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #ffffff;
  transition: var(--transition-normal);
  z-index: 10;
}

.viewer-nav-btn:hover {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: #080808;
}

.viewer-nav-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.viewer-nav-prev { left: 1.5rem; }
.viewer-nav-next { right: 1.5rem; }

/* Indicador de Foto */
.viewer-counter {
  position: absolute;
  bottom: 1.25rem;
  left: 1.5rem;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  padding: 0.35rem 0.85rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  border-radius: var(--radius-sm);
  z-index: 10;
}

/* Tira de Miniaturas Inferior */
.thumbnails-strip {
  height: 90px;
  padding: 0.75rem 1.25rem;
  background: #0b0b0b;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  align-items: center;
  flex-shrink: 0;
}

.thumbnails-strip::-webkit-scrollbar {
  height: 4px;
}
.thumbnails-strip::-webkit-scrollbar-thumb {
  background: #333333;
}

.thumb-item {
  width: 75px;
  height: 60px;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  opacity: 0.45;
  transition: var(--transition-normal);
}

.thumb-item:hover {
  opacity: 0.85;
  border-color: var(--color-border-light);
}

.thumb-item.active {
  opacity: 1;
  border: 2px solid var(--color-gold);
  box-shadow: 0 0 12px rgba(201, 167, 81, 0.3);
}

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

/* Panel Derecho: Ficha Técnica y Memoria Descriptiva */
.modal-specs-panel {
  padding: 2.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  background: var(--color-bg-surface);
}

.modal-specs-panel::-webkit-scrollbar {
  width: 5px;
}
.modal-specs-panel::-webkit-scrollbar-thumb {
  background: #333333;
}

.specs-section-heading {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-gold);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.specs-section-heading::after {
  content: "";
  flex-grow: 1;
  height: 1px;
  background: var(--color-border);
}

/* Matriz de Especificaciones */
.modal-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.modal-spec-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
}

.modal-spec-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.modal-spec-val {
  font-size: 0.92rem;
  color: #ffffff;
  font-weight: 500;
}

/* Memoria Descriptiva */
.modal-description-box {
  margin-bottom: 2.5rem;
}

.modal-desc-p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.85;
  margin-bottom: 1rem;
}

/* Botón de Acción del Modal */
.modal-cta-box {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.modal-cta-box .btn {
  width: 100%;
}

/* ==========================================================================
   RESPONSIVIDAD DEL MODAL
   ========================================================================== */
@media (max-width: 1024px) {
  .modal-body-grid {
    grid-template-columns: 1fr;
    overflow-y: auto;
  }
  .modal-gallery-panel {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    height: 480px;
    flex-shrink: 0;
  }
  .modal-specs-panel {
    overflow-y: visible;
  }
  .project-modal {
    height: 96vh;
  }
}

@media (max-width: 768px) {
  .modal-header {
    padding: 1rem 1.25rem;
  }
  .modal-gallery-panel {
    height: 350px;
  }
  .modal-specs-panel {
    padding: 1.5rem;
  }
  .modal-specs-grid {
    grid-template-columns: 1fr;
  }
  .viewer-nav-btn {
    width: 38px;
    height: 38px;
  }
  .viewer-nav-prev { left: 0.75rem; }
  .viewer-nav-next { right: 0.75rem; }
}