/* ============================================================
   DOCUMENTOS DE TRABAJO — Repositorio académico
   Tipografía: Poppins (títulos) · Zain (cuerpo)
   Diferencia clave vs. Blog:
     · Header bg pizarra claro en lugar de blanco
     · Título partido en dos pesos (900 + 300)
     · Grid 4 columnas retrato
     · Barra de acento lateral izquierda
     · Overlay con scale + opacity (no slide-up)
   ============================================================ */

:root {
  --dt-indicadores: #0369a1;
  --dt-laboral:     #0891b2;
  --dt-genero:      #be185d;
  --dt-desarrollo:  #15803d;
  --dt-pobreza:     #b45309;
  --dt-dark:  #0f172a;
  --dt-slate: #eef2f7;
  --dt-muted: #64748b;
  --dt-line:  #e2e8f0;
}

/* ── Header ─────────────────────────────────────────────────── */

.dt-header {
  background: var(--dt-slate);
  padding: 130px 3rem 0;
  border-bottom: 1px solid var(--dt-line);
}

.dt-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 2.5rem;
}

.dt-kicker {
  font-family: 'Poppins', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dt-muted);
  display: block;
  margin-bottom: 0.8rem;
}

/* Título partido: peso 900 + 300 en líneas separadas */
.dt-title {
  margin: 0;
  line-height: 0.95;
  letter-spacing: -0.03em;
}

.dt-title-main {
  display: block;
  font-family: 'Poppins', sans-serif;
  font-size: clamp(3.8rem, 8vw, 7rem);
  font-weight: 900;
  color: var(--dt-dark);
}

.dt-title-sub {
  display: block;
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  font-weight: 300;
  color: #475569;
  letter-spacing: -0.02em;
}

.dt-subtitle {
  font-family: 'Zain', sans-serif;
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--dt-muted);
  max-width: 380px;
  line-height: 1.65;
  margin-top: 1.2rem;
}

.dt-header-stats {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
  padding-bottom: 0.5rem;
  flex-shrink: 0;
}

.dt-stat {
  font-family: 'Poppins', sans-serif;
  font-size: 0.78rem;
  color: #94a3b8;
  letter-spacing: 0.04em;
}

.dt-stat strong {
  color: var(--dt-dark);
  font-weight: 700;
}

/* ── Filtros ─────────────────────────────────────────────────── */

.dt-filters {
  position: sticky;
  top: 76px;
  z-index: 300;
  background: rgba(238, 242, 247, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--dt-line);
}

.dt-filters-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 3rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.dt-filters-inner::-webkit-scrollbar { display: none; }

.f-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Poppins', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--dt-muted);
  background: transparent;
  border: 1.5px solid var(--dt-line);
  border-radius: 50px;
  padding: 0.4rem 1rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.f-pill:hover { border-color: #94a3b8; color: var(--dt-dark); }
.f-pill.active { background: var(--dt-dark); border-color: var(--dt-dark); color: #fff; }

.f-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── Zona de contenido ──────────────────────────────────────── */

.dt-content {
  background: #fff;
  padding: 3rem 3rem 6rem;
}

.dt-inner {
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Grid retrato 4 columnas ─────────────────────────────────── */

.dt-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* ── Tarjeta de documento ────────────────────────────────────── */

.dt-card {
  background: #fff;
  border-radius: 14px;
  border: 1px solid var(--dt-line);
  display: flex;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  min-height: 310px;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.dt-card:hover {
  box-shadow: 0 16px 48px rgba(0,0,0,0.1);
  transform: translateY(-3px);
}

/* Barra lateral izquierda — identidad propia vs. barra superior del blog */
.dt-accent {
  width: 5px;
  flex-shrink: 0;
  border-radius: 14px 0 0 14px;
}

.dt-card-body {
  padding: 1.6rem 1.5rem 1.6rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex: 1;
  position: relative;
}

/* Numeración DT en esquina superior derecha */
.dt-num {
  position: absolute;
  top: 1.4rem;
  right: 1.4rem;
  font-family: 'Poppins', sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #cbd5e1;
}

.dt-cat-label {
  font-family: 'Poppins', sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-top: 0.4rem;
}

.dt-cat-title {
  font-family: 'Poppins', sans-serif;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--dt-dark);
  line-height: 1.35;
  margin: 0;
}

.dt-cat-desc {
  font-family: 'Zain', sans-serif;
  font-size: 0.97rem;
  font-weight: 400;
  color: var(--dt-muted);
  line-height: 1.65;
  margin: 0;
  flex: 1;
}

.dt-meta {
  font-family: 'Zain', sans-serif;
  font-size: 0.82rem;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
}

.dt-meta i { font-size: 0.75rem; }

/* ── Overlay: scale + opacity (distinto al slide-up del blog) ── */

.dt-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.86);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  opacity: 0;
  transform: scale(0.97);
  transition: opacity 0.28s ease, transform 0.28s ease;
  z-index: 20;
  border-radius: inherit;
}

.dt-card:hover .dt-overlay {
  opacity: 1;
  transform: scale(1);
}

.dt-overlay i {
  font-size: 1.8rem;
  color: #7dd3fc;
}

.dt-overlay p {
  font-family: 'Poppins', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  margin: 0;
  letter-spacing: 0.02em;
}

/* ── Colores de categoría ────────────────────────────────────── */

.cat-indicadores { color: var(--dt-indicadores); }
.cat-laboral     { color: var(--dt-laboral); }
.cat-genero      { color: var(--dt-genero); }
.cat-desarrollo  { color: var(--dt-desarrollo); }
.cat-pobreza     { color: var(--dt-pobreza); }

.acc-indicadores { background: var(--dt-indicadores); }
.acc-laboral     { background: var(--dt-laboral); }
.acc-genero      { background: var(--dt-genero); }
.acc-desarrollo  { background: var(--dt-desarrollo); }
.acc-pobreza     { background: var(--dt-pobreza); }

.dot-indicadores { background: var(--dt-indicadores); }
.dot-laboral     { background: var(--dt-laboral); }
.dot-genero      { background: var(--dt-genero); }
.dot-desarrollo  { background: var(--dt-desarrollo); }
.dot-pobreza     { background: var(--dt-pobreza); }

/* ── Responsive ─────────────────────────────────────────────── */

@media (max-width: 1100px) {
  .dt-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .dt-header { padding: 110px 1.5rem 0; }
  .dt-header-inner { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .dt-filters-inner { padding: 0.75rem 1.5rem; flex-wrap: wrap; gap: 0.4rem; }
  .dt-content { padding: 2rem 1.5rem 5rem; }
  .dt-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 500px) {
  .dt-title-main { font-size: 3.2rem; }
  .dt-title-sub  { font-size: 2rem; }
  .dt-grid { grid-template-columns: 1fr; }
}