/**
 * estudios.css
 * Estilos modernos para la sección de Estudios (estudios.html)
 * Se carga DESPUÉS de style.css — usa !important donde el template base sobreescribe.
 */

/* =============================================
   VARIABLES DE DISEÑO
   ============================================= */
:root {
  --est-blue-dark:   #0B1F4A;
  --est-blue:        #1E5FD3;
  --est-blue-light:  #3a7bd5;
  --est-teal:        #0D8C6D;
  --est-teal-light:  #10a880;
  --est-cream:       #f8f7f4;
  --est-white:       #ffffff;
  --est-text:        #2c3e50;
  --est-text-muted:  #64748b;
  --est-border:      #e2e8f0;
  --est-shadow:      0 4px 24px rgba(11,31,74,0.10);
  --est-shadow-hover:0 12px 40px rgba(30,95,211,0.18);
  --est-radius:      14px;
  --est-transition:  0.3s cubic-bezier(.4,0,.2,1);
}

/* =============================================
   HERO / PAGE HEADER
   ============================================= */
.page-header {
  background-image: linear-gradient(135deg, rgba(11,31,74,0.82) 0%, rgba(13,140,109,0.60) 100%),
                    url('../img/page-header.jpg') !important;
  background-size: cover !important;
  background-position: center !important;
  padding: 100px 0 80px !important;
  position: relative;
}
.page-header h2 {
  font-size: clamp(2.4rem, 5vw, 3.8rem) !important;
  font-weight: 800 !important;
  color: var(--est-white) !important;
  letter-spacing: 0.04em !important;
  text-transform: uppercase !important;
  margin-bottom: 12px !important;
}
.page-header p,
.page-header p a {
  color: rgba(255,255,255,0.82) !important;
  font-size: 1rem !important;
}
.page-header p a:hover {
  color: var(--est-white) !important;
}

/* =============================================
   SECCIÓN PRINCIPAL DE ESTUDIOS
   ============================================= */
.news-alani-sayfa {
  background: var(--est-cream) !important;
  padding: 72px 40px 80px !important;
}

/* Encabezado de sección */
.tc-estudios-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 56px auto;
}
.tc-estudios-header .tc-section-label {
  display: inline-block;
  background: linear-gradient(90deg, var(--est-blue), var(--est-teal));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 5px 18px;
  border-radius: 20px;
  margin-bottom: 18px;
}
.tc-estudios-header h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.8rem) !important;
  font-weight: 800 !important;
  color: var(--est-blue-dark) !important;
  line-height: 1.2 !important;
  margin-bottom: 16px !important;
}
.tc-estudios-header p {
  font-size: 20px !important;
  color: #1a1a2e !important;
  line-height: 1.7 !important;
  margin: 0 !important;
}

/* =============================================
   FILTROS DE CATEGORÍA
   ============================================= */
.tc-filtros {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 48px;
}
.tc-filtro-btn {
  background: var(--est-white);
  border: 2px solid var(--est-border);
  color: var(--est-text-muted);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 22px;
  border-radius: 30px;
  cursor: pointer;
  transition: var(--est-transition);
  letter-spacing: 0.03em;
}
.tc-filtro-btn:hover,
.tc-filtro-btn.activo {
  background: var(--est-blue);
  border-color: var(--est-blue);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30,95,211,0.25);
}

/* =============================================
   GRID DE TARJETAS
   ============================================= */
.tc-grid {
  display: grid !important;
  grid-template-columns: repeat(3, 1fr) !important;
  gap: 32px !important;
  max-width: 1200px;
  margin: 0 auto !important;
  float: none !important;
}

/* Tarjeta individual */
.tc-card {
  background: var(--est-white);
  border-radius: var(--est-radius);
  overflow: hidden;
  box-shadow: var(--est-shadow);
  transition: var(--est-transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--est-border);
  animation: tcFadeUp 0.5s ease both;
}
.tc-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--est-shadow-hover);
  border-color: var(--est-blue);
}
.tc-card.oculto {
  display: none !important;
}

/* Imagen de la tarjeta */
.tc-card__img-wrap {
  position: relative;
  overflow: hidden;
  height: 210px;
}
.tc-card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  display: block;
}
.tc-card:hover .tc-card__img-wrap img {
  transform: scale(1.06);
}

/* Badge de categoría */
.tc-card__badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: linear-gradient(90deg, var(--est-blue), var(--est-teal));
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
}

/* Cuerpo de la tarjeta */
.tc-card__body {
  padding: 24px 26px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.tc-card__meta {
  font-size: 12px;
  color: var(--est-text-muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.tc-card__meta i {
  color: var(--est-teal);
}
.tc-card__title {
  font-size: 20px !important;
  font-weight: 700 !important;
  color: var(--est-blue-dark) !important;
  line-height: 1.4 !important;
  margin-bottom: 12px !important;
  flex: 1;
}
.tc-card__desc {
  font-size: 14px !important;
  color: #1a1a2e !important;
  line-height: 1.6 !important;
  margin-bottom: 20px !important;
}

/* CTA de la tarjeta */
.tc-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--est-blue);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--est-transition);
  border-top: 1px solid var(--est-border);
  padding-top: 16px;
  margin-top: auto;
}
.tc-card__cta:hover {
  color: var(--est-teal);
  gap: 10px;
  text-decoration: none;
}
.tc-card__cta svg {
  flex-shrink: 0;
  transition: transform 0.2s ease;
}
.tc-card:hover .tc-card__cta svg {
  transform: translateX(4px);
}

/* =============================================
   TARJETA DESTACADA (primera / grande)
   ============================================= */
.tc-card.tc-card--featured {
  grid-column: span 2;
  flex-direction: row;
}
.tc-card--featured .tc-card__img-wrap {
  width: 48%;
  min-width: 48%;
  height: auto;
}
.tc-card--featured .tc-card__body {
  padding: 32px 32px 28px;
}
.tc-card--featured .tc-card__title {
  font-size: 21px !important;
}

/* =============================================
   PAGINACIÓN
   ============================================= */
.tc-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 56px;
}
.tc-pag-btn {
  width: 40px;
  height: 40px;
  border: 2px solid var(--est-border);
  border-radius: 8px;
  background: var(--est-white);
  color: var(--est-text-muted);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--est-transition);
}
.tc-pag-btn:hover,
.tc-pag-btn.activo {
  background: var(--est-blue);
  border-color: var(--est-blue);
  color: #fff;
}

/* =============================================
   ANIMACIÓN
   ============================================= */
@keyframes tcFadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
.tc-card:nth-child(1) { animation-delay: 0.05s; }
.tc-card:nth-child(2) { animation-delay: 0.12s; }
.tc-card:nth-child(3) { animation-delay: 0.19s; }
.tc-card:nth-child(4) { animation-delay: 0.26s; }
.tc-card:nth-child(5) { animation-delay: 0.33s; }
.tc-card:nth-child(6) { animation-delay: 0.40s; }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .tc-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .tc-card--featured {
    grid-column: span 2;
    flex-direction: column;
  }
  .tc-card--featured .tc-card__img-wrap {
    width: 100%;
    height: 220px;
  }
}

@media (max-width: 640px) {
  .news-alani-sayfa {
    padding: 48px 20px 60px !important;
  }
  .tc-grid {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
  }
  .tc-card--featured {
    grid-column: span 1;
  }
}