.main_content {
  padding-left: 2rem;
  padding-right: 2rem;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}


/* Efecto al hacer clic en ambos */
.action-button:active,
.btn-outline:active {
  transform: translateY(0);
}

/* --- MODAL OVERLAY (El fondo oscuro) --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(18, 30, 49, 0.8);
  backdrop-filter: blur(4px);
  display: none;
  /* Controlado por JS */
  align-items: center;
  justify-content: center;
  z-index: 11000;
  padding: 2rem;
}

/* --- LA TARJETA (El cuadro blanco) --- */
.modal-card {
  background: #ffffff;
  width: 100%;
  max-width: 800px;
  /* Ancho cómodo */
  max-height: 90vh;
  /* Para que no se salga de la pantalla */
  border-radius: 20px;
  overflow-y: auto;
  /* Scroll interno si es muy largo */
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  animation: modalSlideUp 0.3s ease-out;
}

/* --- ENCABEZADO --- */
.modal-header {
  background: #121e31;
  color: white;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}

.modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.close-modal {
  background: transparent;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

/* --- CUERPO DEL FORMULARIO --- */
.modal-form {
  padding: 2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  /* DOS COLUMNAS */
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: #374151;
  /* Gris oscuro legible */
}

/* Estilo de los Inputs/Selects/Textareas */
.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  background: #f9fafb;
  font-size: 0.9rem;
  color: #111827;
  width: 100%;
  box-sizing: border-box;
}

.form-group input:focus {
  border-color: #121e31;
  outline: none;
  background: #fff;
}

/* Contenedor de la imagen */
.file-input-wrapper {
  border: 2px dashed #d1d5db;
  padding: 1rem;
  border-radius: 10px;
  text-align: center;
  background: #f3f4f6;
}

/* Animación de entrada */
@keyframes modalSlideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}


/* --- BOTÓN SECUNDARIO (Rellenar Demo / Cancelar) --- */
.btn-outline {
  background-color: #ffffff;
  color: #4b5563;
  /* Gris elegante */
  border: 1px solid #d1d5db;
  padding: 0.8rem 1.5rem;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.btn-outline:hover {
  background-color: #f9fafb;
  border-color: #9ca3af;
  color: #111827;
}

/* --- BOTÓN PRINCIPAL (Guardar Cambios) --- */
.action-button {
  background-color: #121e31;
  color: #ffffff;
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.action-button:hover {
  background-color: #1f3252;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(18, 30, 49, 0.2);
}

/* --- CONTENEDOR DE BOTONES (Alineación) --- */
.card-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid #f3f4f6;
  /* Línea sutil divisoria */
}





/* --- TARJETAS ESTILO FLIP (Adaptadas a challenge-card) --- */
.tarjeta-evento {
  perspective: 1000px;
  height: 420px;
  /* Altura fija necesaria para el efecto flip */
}

.flip-card {
  width: 100%;
  height: 100%;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
  transform-style: preserve-3d;
}

/* Activa esto con JS (.is-flipped) o con :hover según tu preferencia */
.tarjeta-evento:hover .flip-card-inner,
.flip-card.is-flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  background-color: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  transition: all 0.3s ease;
}

.flip-card-front:hover {
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.flip-card-back {
  transform: rotateY(180deg);
  justify-content: space-between;
}

/* --- CONTENIDO DE LA TARJETA --- */
.evento-imagen-grande {
  width: 100%;
  height: 160px;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1rem;
  background: #f3f4f6;
}

.evento-imagen-grande img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.evento-info h3,
.flip-card-back h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.25rem;
  line-height: 1.4;
  font-weight: 700;
  color: #121e31;
}

.evento-info p,
.flip-card-back p {
  font-size: 0.85rem;
  color: #6b7280;
  line-height: 1.5;
  margin: 0.3rem 0;
}

.flip-card-back strong {
  color: #374151;
}

.action-button:hover:not(:disabled) {
  background-color: #1f3252;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(18, 30, 49, 0.15);
}

.action-button:active:not(:disabled) {
  transform: translateY(0);
}

.centro {
  margin-top: auto;
  width: 100%;
}

.centro .action-button {
  width: 100%;
}

.active-btn {
  background-color: #ffffff;
}