/* ==========================================================================
   ARTEFACTO VISUAL — Proyectos
   pages/proyectos.css v1.0 2026
   ========================================================================== */

/* Barra de filtro */
.projects-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding-bottom: var(--space-6);
  border-bottom: 0.5px solid var(--color-border-subtle);
  margin-bottom: var(--space-8);
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-bg-surface);
  border: 0.5px solid var(--color-border-default);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast);
  white-space: nowrap;
}

.filter-btn:hover {
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
}

.filter-btn.active {
  background-color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: white;
}

.filter-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 var(--space-1);
  background-color: rgba(255,255,255,0.25);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  line-height: 1;
}

.filter-btn:not(.active) .filter-count {
  background-color: var(--color-bg-sunken);
  color: var(--color-text-tertiary);
}

.filter-separator {
  width: 0.5px;
  height: 20px;
  background-color: var(--color-border-default);
  flex-shrink: 0;
  margin-inline: var(--space-1);
}

.projects-count {
  margin-left: auto;
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  white-space: nowrap;
}

/* Grid */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .projects-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.projects-empty {
  display: none;
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16) var(--space-6);
  color: var(--color-text-tertiary);
}

.projects-empty.visible { display: block; }

.projects-empty p {
  font-size: var(--text-md);
  margin: var(--space-3) auto 0;
  max-width: 36ch;
}

/* Animación de filtrado */
.card-project {
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.card-project.hidden { display: none; }

.card-project.fade-in-filter {
  animation: fadeInCard 300ms ease forwards;
}

@keyframes fadeInCard {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Modal backdrop */
.project-modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--color-bg-overlay);
  z-index: var(--z-modal);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-4);
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

@media (min-width: 768px) {
  .project-modal-backdrop {
    padding: var(--space-8);
    align-items: center;
  }
}

.project-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

/* Modal */
.project-modal {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 860px;
  max-height: 90dvh;
  overflow-y: auto;
  position: relative;
  transform: translateY(16px) scale(0.98);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-lg);
}

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

.project-modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-sunken);
  border: 0.5px solid var(--color-border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-secondary);
  z-index: 1;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.project-modal-close:hover {
  background-color: var(--color-error-bg);
  color: var(--color-error);
  border-color: var(--color-error);
}

/* Contenido modal */
.modal-hero-img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  display: block;
}

.modal-body {
  padding: var(--space-8);
}

@media (max-width: 479px) {
  .modal-body { padding: var(--space-6) var(--space-5); }
}

.modal-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 0.5px solid var(--color-border-subtle);
}

.modal-client {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-brand-primary);
}

.modal-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-lg), 3vw, var(--text-xl));
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin: 0;
  line-height: var(--leading-tight);
}

.modal-subtitle {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: var(--leading-snug);
  max-width: none;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.modal-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .modal-content { grid-template-columns: 1fr 220px; align-items: start; }
}

.modal-case-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.modal-case-text h3 {
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2);
}

.modal-case-text p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  margin: 0;
  max-width: none;
}

.modal-case-text ul {
  padding-left: var(--space-5);
  color: var(--color-text-secondary);
  font-size: var(--text-base);
}

.modal-case-text ul li + li { margin-top: var(--space-2); }

.modal-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.modal-meta-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.modal-meta-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.modal-meta-value {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

.modal-meta-divider {
  height: 0.5px;
  background-color: var(--color-border-subtle);
}

.modal-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.modal-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 0.5px solid var(--color-border-subtle);
}

.modal-cta {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 0.5px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.modal-cta-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
  max-width: none;
}