/* =============================================
   USB – Carreras Catalog Styles
   carreras.css
   ============================================= */

/* ---- Page Header ---- */
.carreras-page__header {
  background: linear-gradient(135deg, var(--usb-blue-dark) 0%, var(--usb-blue) 100%);
  padding: var(--space-16) 0 var(--space-20);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.carreras-page__header::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--gray-50);
  clip-path: ellipse(70% 100% at 50% 100%);
}

.carreras-page__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.85);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}

.carreras-page__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  color: white;
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 1;
}

.carreras-page__subtitle {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.7);
  max-width: 520px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ---- Filter Bar ---- */
.carreras-filter {
  background: white;
  border-bottom: 1px solid var(--gray-100);
  position: sticky;
  top: 72px;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.carreras-filter__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  overflow-x: auto;
  scrollbar-width: none;
}

.carreras-filter__inner::-webkit-scrollbar { display: none; }

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  border: 2px solid var(--gray-200);
  background: white;
  color: var(--gray-600);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.filter-btn:hover {
  border-color: var(--usb-blue);
  color: var(--usb-blue);
}

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

.filter-btn--carrera {
  border-color: var(--carrera-color);
  color: var(--carrera-color);
}

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

/* ---- Main Catalog Grid ---- */
.carreras-catalog {
  background: var(--gray-50);
  padding: var(--space-12) 0 var(--space-20);
}

.carreras-catalog__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: var(--space-6);
}

/* ---- Carrera Full Card ---- */
.carrera-full-card {
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition-slow);
  display: flex;
  flex-direction: column;
  border-top: 4px solid var(--carrera-color);
}

.carrera-full-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.carrera-full-card__hero {
  padding: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-5);
  background: linear-gradient(to bottom right, rgba(var(--carrera-r),var(--carrera-g),var(--carrera-b),0.05), white);
}

.carrera-full-card__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: var(--carrera-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.75rem;
  flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(var(--carrera-r),var(--carrera-g),var(--carrera-b),0.35);
}

.carrera-full-card__info { flex: 1; }

.carrera-full-card__name {
  font-family: var(--font-display);
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}

.carrera-full-card__tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.carrera-tag {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(var(--carrera-r),var(--carrera-g),var(--carrera-b),0.12);
  color: var(--carrera-color);
}

.carrera-full-card__body {
  padding: 0 var(--space-6) var(--space-5);
  flex: 1;
}

.carrera-full-card__desc {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.carrera-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.carrera-highlight {
  background: var(--gray-50);
  border-radius: var(--radius);
  padding: var(--space-3);
  text-align: center;
}

.carrera-highlight__num {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--carrera-color);
  display: block;
  line-height: 1;
  margin-bottom: 2px;
}

.carrera-highlight__label {
  font-size: 0.7rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.carrera-full-card__actions {
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--gray-100);
  display: flex;
  gap: var(--space-3);
}

.carrera-full-card__actions .btn {
  flex: 1;
  font-size: 0.875rem;
  padding: 0.65rem 1rem;
}

.carrera-btn-main {
  background: var(--carrera-color) !important;
  color: white !important;
  box-shadow: 0 4px 16px rgba(var(--carrera-r),var(--carrera-g),var(--carrera-b),0.3) !important;
}

.carrera-btn-main:hover {
  filter: brightness(1.1);
  transform: translateY(-2px) !important;
}

/* ---- Malla Modal ---- */
.malla-modal {
  max-width: min(95vw, 1100px);
  width: 100%;
}

.malla-modal__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

.malla-modal__controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--gray-100);
}

/* ---- Count badge ---- */
.carreras-count {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.carreras-count strong {
  color: var(--gray-800);
}

/* ---- No results ---- */
.no-results {
  text-align: center;
  padding: var(--space-20) var(--space-6);
  display: none;
}

.no-results.visible { display: block; }

.no-results__icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.4;
}

.no-results__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: var(--space-2);
}

.no-results__desc {
  color: var(--gray-500);
}

/* ---- Responsive Carreras ---- */
@media (max-width: 768px) {
  .carreras-catalog__grid { grid-template-columns: 1fr; }
  .carrera-highlights { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 480px) {
  .carrera-highlights { grid-template-columns: 1fr; }
  .carrera-full-card__hero { flex-direction: column; align-items: flex-start; }
}