.error-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 1.5rem;
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 50%, var(--color-white2) 100%);
  position: relative;
  overflow: hidden;
}

.error-page::before {
  content: '';
  position: absolute;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(239, 68, 68, 0.1) 0%, transparent 70%);
  top: -300px;
  right: -200px;
  border-radius: 50%;
  animation: float 10s ease-in-out infinite;
}

.error-container {
  max-width: 900px;
  margin: auto;
  position: relative;
  z-index: 1;
}

.error-content {
  background: var(--color-white2);
  border-radius: 40px;
  padding: 5rem 4rem;
  text-align: center;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.1);
  border: 2px solid rgba(239, 68, 68, 0.2);
}

.error-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto 2.5rem;
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 50px rgba(239, 68, 68, 0.3);
  animation: shake 0.6s ease backwards;
}

.error-icon i {
  font-size: 3.5rem;
  color: var(--color-white2);
}

.error-content h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: var(--color-text);
  margin-bottom: 1.5rem;
  font-weight: 900;
  letter-spacing: -1px;
  animation: fadeInUp 0.8s ease backwards 0.2s;
}

.mensaje-principal {
  font-size: 1.2rem;
  line-height: 1.8;
  color: var(--color-text);
  opacity: 0.85;
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s ease backwards 0.4s;
}

.error-alternativas {
  margin-bottom: 3rem;
  animation: fadeInUp 0.8s ease backwards 0.6s;
}

.error-alternativas h3 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--color-text);
  margin-bottom: 2.5rem;
  font-weight: 800;
}

.alternativas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.alternativa-card {
  background: linear-gradient(135deg, #f8fafc 0%, var(--color-white2) 100%);
  border-radius: 24px;
  padding: 2.5rem 2rem;
  text-align: center;
  border: 2px solid rgba(0, 0, 0, 0.05);
  transition: all 0.4s ease;
}

.alternativa-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
  border-color: var(--color-primary);
}

.alternativa-card.destacada {
  background: linear-gradient(135deg, rgba(40, 225, 218, 0.08) 0%, rgba(85, 180, 176, 0.05) 100%);
  border-color: var(--color-primary);
}

.alternativa-card.destacada:hover {
  background: linear-gradient(135deg, rgba(40, 225, 218, 0.12) 0%, rgba(85, 180, 176, 0.08) 100%);
}

.alternativa-card > i {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  display: block;
  color: var(--color-primary);
}

.alternativa-card h4 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--color-text);
  margin-bottom: 0.8rem;
  font-weight: 800;
}

.alternativa-card p {
  font-size: 1rem;
  color: var(--color-text);
  opacity: 0.75;
  margin-bottom: 1.5rem;
}

.alternativa-card .btn-main,
.alternativa-card .btn-secondary {
  padding: 0.9rem 1rem;
  font-size: 0.95rem;
  gap: 0.5rem;
  width: 100%;
  justify-content: center;
}

.link-volver {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  animation: fadeInUp 0.8s ease backwards 0.8s;
}

.link-volver:hover {
  color: var(--color-primary);
  transform: translateX(-5px);
}

.link-volver i {
  transition: transform 0.3s ease;
}

.link-volver:hover i {
  transform: translateX(-3px);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-10px); }
  20%, 40%, 60%, 80% { transform: translateX(10px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-40px) rotate(5deg); }
}

@media (max-width: 768px) {
  .error-content {
    padding: 3rem 2rem;
  }

  .alternativas-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .error-icon {
    width: 80px;
    height: 80px;
  }

  .error-icon i {
    font-size: 2.5rem;
  }
}