.exposiciones-header {
  position: relative;
  width: 100%;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, var(--azul-dark) 0%, var(--azul) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.exposiciones-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, 
    var(--oro) 0%, 
    var(--teal-light) 30%, 
    var(--oro) 60%,
    var(--teal-light) 100%
  );
  background-size: 200% auto;
  animation: slideShine 3s linear infinite;
  opacity: 0.8;
}

@keyframes slideShine {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

.exposiciones-header__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 800px;
}

.exposiciones-header__text {
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.exposiciones-header__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--teal-light);
  background: rgba(255,255,255,0.1);
  padding: 0.3rem 1.2rem;
  border-radius: 30px;
  margin-bottom: 1rem;
  border: 1px solid rgba(255,255,255,0.08);
}

.exposiciones-header__title {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(1rem, 2vw, 3.2rem);
  font-weight: 700;
  color: var(--blanco);
  margin-bottom: 0.75rem;
}

.exposiciones-header__divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--oro), var(--teal-light));
  margin: 0 auto 0.75rem;
  border-radius: 2px;
}

.exposiciones-header__desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .exposiciones-header {
    padding: 3rem 1.5rem;
  }
  
  .exposiciones-header__title {
    font-size: 1.8rem;
  }
  
  .exposiciones-header__desc {
    font-size: 0.85rem;
  }
  
  .exposiciones-header__tag {
    font-size: 0.6rem;
    padding: 0.2rem 0.8rem;
  }
}

@media (max-width: 480px) {
  .exposiciones-header {
    padding: 2rem 1rem;
  }
  
  .exposiciones-header__title {
    font-size: 1.5rem;
  }
  
  .exposiciones-header__divider {
    width: 40px;
  }
  
  .exposiciones-header__desc {
    font-size: 0.75rem;
  }
}

.expo-actual {
  background: var(--fondo);
  padding: 4rem 0 1rem;
}

.expo-actual__card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: stretch;
  background: var(--blanco);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--sombra-hover);
  border: 1px solid var(--borde);
  text-align: justify;
}

.expo-actual__img {
  position: relative;
  min-height: 420px;
  overflow: hidden;
}

.expo-actual__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.expo-actual__card:hover .expo-actual__img img {
  transform: scale(1.04);
}

.expo-actual__content {
  padding: 3rem 3.2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: linear-gradient(135deg, var(--azul-dark) 0%, var(--azul) 100%);
  color: var(--blanco);
  position: relative;
}

.expo-actual__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-light);
  background: rgba(255,255,255,0.1);
  padding: 0.4rem 1rem;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,0.15);
  margin-bottom: 1.3rem;
}

.expo-actual__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--oro);
  animation: expoPulse 1.6s ease-in-out infinite;
}

@keyframes expoPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(1.4); }
}

.expo-actual__content h2 {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(1.6rem, 2.6vw, 2.4rem);
  font-weight: 700;
  color: var(--blanco);
  line-height: 1.25;
  margin-bottom: 1rem;
}

.expo-actual__divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--oro), var(--teal-light));
  border-radius: 2px;
  margin-bottom: 1.3rem;
}

.expo-actual__content p {
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.82);
  margin-bottom: 2rem;
  max-width: 440px;
}

.btn-card--filled {
  align-self: flex-start;
  border-color: var(--oro);
  color: var(--oro);
}

.btn-card--filled:hover {
  background: var(--oro);
  color: var(--azul-dark);
  border-color: var(--oro);
  box-shadow: 0 6px 16px rgba(0,0,0,0.25);
}

@media (max-width: 900px) {
  .expo-actual__card {
    grid-template-columns: 1fr;
  }
  .expo-actual__img {
    min-height: 280px;
  }
  .expo-actual__content {
    padding: 2.4rem 1.8rem;
  }
}

@media (max-width: 480px) {
  .expo-actual {
    padding: 2.5rem 0 0.5rem;
  }
  .expo-actual__content {
    padding: 2rem 1.4rem;
  }
  .expo-actual__content h2 {
    font-size: 1.4rem;
  }
  .expo-actual__content p {
    font-size: 0.85rem;
  }
}

.exposiciones-section {
  background: var(--fondo);
  padding: 4rem 0 5rem;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 36px;
}

.exposiciones-section .section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.exposiciones-section .section-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.6rem;
}

.exposiciones-section .section-header h2 {
  font-family: 'Poppins', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--azul-dark);
  margin-bottom: 0.75rem;
}

.exposiciones-section .section-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--oro), var(--teal-light));
  margin: 0 auto 1rem;
  border-radius: 2px;
}

.exposiciones-section .section-desc {
  font-size: 0.9rem;
  color: var(--texto-sub);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.6;
}

.exposiciones-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.expo-card {
  background: var(--blanco);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--sombra);
  transition: all 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
  display: flex;
  flex-direction: column;
}

.expo-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--sombra-hover);
}

.expo-card__img {
  width: 100%;
  height: 240px;
  overflow: hidden;
  position: relative;
}

.expo-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease, filter 0.4s ease;
  filter: grayscale(70%);
}

.expo-card:hover .expo-card__img img {
  transform: scale(1.1);
  filter: grayscale(0%);
}

.expo-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,134,172,0.2) 0%, rgba(11,61,145,0.3) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.expo-card:hover .expo-card__overlay {
  opacity: 1;
}

.expo-card__content {
  padding: 1.8rem 1.5rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
}

.expo-card__content h3 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--azul-dark);
  margin-bottom: 0.75rem;
  line-height: 1.4;
  text-align: center;
}

.expo-card__content p {
  font-size: 0.85rem;
  color: var(--texto-sub);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  text-align: center;
}

.btn-card {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  background: transparent;
  border: 2px solid var(--teal);
  color: var(--teal);
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: 40px;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  margin-top: auto;
}

.btn-card span {
  transition: transform 0.3s ease;
}

.btn-card svg {
  transition: transform 0.3s ease;
  opacity: 0.8;
}

.btn-card:hover {
  background: var(--teal);
  color: var(--blanco);
  border-color: var(--teal);
  gap: 12px;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,134,172,0.3);
}

.btn-card:hover span {
  transform: translateX(2px);
}

.btn-card:hover svg {
  transform: translateX(4px);
}

@media (max-width: 900px) {
  .container {
    padding: 0 24px;
  }
  
  .exposiciones-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
  }
  
  .expo-card__img {
    height: 220px;
  }
  
  .expo-card__content {
    padding: 1.5rem 1.2rem 1.8rem;
  }
  
  .expo-card__content h3 {
    font-size: 1.1rem;
  }
  
  .btn-card {
    padding: 8px 20px;
    font-size: 0.8rem;
  }
}

@media (max-width: 768px) {
  .exposiciones-section {
    padding: 2.5rem 0 3.5rem;
  }
  
  .exposiciones-grid {
    grid-template-columns: 1fr;
    max-width: 380px;
    margin: 0 auto;
  }
  
  .expo-card__img {
    height: 240px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .exposiciones-section {
    padding: 2rem 0;
  }
  
  .expo-card__content {
    padding: 1.2rem 1rem 1.5rem;
  }
  
  .expo-card__content h3 {
    font-size: 1rem;
  }
  
  .expo-card__content p {
    font-size: 0.75rem;
    margin-bottom: 1rem;
  }
  
  .btn-card {
    padding: 6px 18px;
    font-size: 0.75rem;
    gap: 6px;
  }
  
  .btn-card svg {
    width: 14px;
    height: 14px;
  }
}