.flip-card {
  perspective: 1000px;
  width: 100%;
}

.flip-inner {
  transition: transform 0.6s;
  transform-style: preserve-3d;
  width: 100%;
}

.flip-card.flipped .flip-inner {
  transform: rotateY(180deg);
}

.flip-front,
.flip-back {
  backface-visibility: hidden;
  width: 100%;
}

.flip-back {
  transform: rotateY(180deg);
  display: none;
}

.flip-card.flipped .flip-front {
  display: none;
}

.flip-card.flipped .flip-back {
  display: block;
}

.fondo-responsivo {
  width: 100vw;
  max-width: 1279.00390625px;
  aspect-ratio: 1279 / 853;
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-image: url('../images/12.png');
  /* imagen por defecto */
}

@media (max-width: 1080px) {
  .fondo-responsivo {
    background-image: url('../images/12-p-1080.png');
    /* podrías usar otra, ej: 1080 */
  }
}

@media (max-width: 800px) {
  .fondo-responsivo {
    background-image: url('../images/12-p-800.png');
    /* podrías usar otra, ej: 800 */
  }
}

@media (max-width: 500px) {
  .fondo-responsivo {
    background-image: url('../images/12-p-500.png');
    /* podrías usar otra, ej: 500 */
  }
}

/* Centrar modal verticalmente */
.bootbox .modal-dialog {
  display: flex;
  align-items: center;
  min-height: 100vh;
}

/* Fondo y contenido del modal */
.bootbox .modal-content {
  background-color: #111;
  /* Negro */
  color: var(--main-color);
  /* Blanco */
  border-radius: 16px;
  border: 2px solid var(--second-color);
  /* Tinto */
  font-family: 'PT Serif', serif;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  animation: fadeInScale 0.3s ease;
}

/* Título del modal */
.bootbox .modal-title {
  font-family: 'Coolvetica Condensed Rg', sans-serif;
  color: var(--main-color);
  font-size: 1.8rem;
  letter-spacing: 1px;
}

/* Botón de confirmar */
.bootbox .btn-success {
  background-color: var(--second-color);
  border-color: var(--second-color);
  color: var(--main-color);
  font-weight: bold;
  transition: all 0.2s ease-in-out;
}

.bootbox .btn-success:hover {
  background-color: #770000;
  border-color: #770000;
  color: white;
}

.btn-success {
  background-color: var(--second-color) !important;
  border-color: var(--second-color) !important;
  color: var(--main-color) !important;
  font-weight: bold !important;
  transition: all 0.2s ease-in-out !important;
}

.btn-success:hover {
  background-color: #770000 !important;
  border-color: #770000 !important;
  color: white !important;
}

/* Botón de cancelar */
.bootbox .btn-secondary {
  background-color: #111;
  border-color: #111;
  color: var(--main-color);
  font-weight: bold;
  transition: all 0.2s ease-in-out;
}

.bootbox .btn-secondary:hover {
  background-color: #333;
  border-color: #333;
  color: white;
}

/* Desenfoque del fondo */
.modal-backdrop.show {
  backdrop-filter: blur(15px);
  background-color: rgba(0, 0, 0, 0.6);
}

/* Animación de entrada */
@keyframes fadeInScale {
  0% {
    opacity: 0;
    transform: scale(0.9);
  }

  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Contenedor del bloque */
#form_invitados {
  background-color: rgba(0, 0, 0, 0.7);
  /* Negro semi transparente */
  border-radius: 16px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
  color: #333;
  /* Blanco */
  font-family: 'PT Serif', serif;
}

/* Títulos */
#mensaje_persona_o_grupo {
  font-family: 'Coolvetica Condensed Rg', sans-serif;
  font-size: 2rem;
  color: var(--second-color);
  /* Tinto */
}

#nombre_persona_o_grupo {
  font-family: 'Coolvetica Condensed Rg', sans-serif;
  font-size: 1.5rem;
  color: #333;
}

/* Subtítulo */
h6.fw-bold {
  color: #333;
  font-size: 1rem;
}

/* Indicador de tocar para confirmar */
#form_invitados .text-muted {
  color: #bbb;
  font-style: italic;
}

/* Lista de invitados */
#invitados li {
  border-bottom: 1px solid #333;
  padding: 0.5rem 0;
  transition: background-color 0.2s ease;
}

#invitados li:hover {
  background-color: rgba(255, 255, 255, 0.05);
  cursor: pointer;
}

/* Checkbox alineado y estilizado */
#invitados input[type="checkbox"] {
  transform: scale(1.2);
}

/* Scroll con estilo */
#invitados {
  scrollbar-width: thin;
  scrollbar-color: var(--second-color) transparent;
}

#invitados::-webkit-scrollbar {
  width: 6px;
}

#invitados::-webkit-scrollbar-thumb {
  background-color: var(--second-color);
  border-radius: 3px;
}

/* Color del checkbox cuando está marcado */
input[type="checkbox"].form-check-input:checked {
  background-color: var(--second-color);
  border-color: var(--second-color);
}

input[type="checkbox"].form-check-input {
  transition: all 0.2s ease;
}

/* Para el okey del alert */
.bootbox .btn-primary {
  background-color: var(--second-color);
  border-color: var(--second-color);
  color: var(--main-color);
  font-weight: bold;
  transition: all 0.2s ease-in-out;
}

.bootbox .btn-primary:hover {
  background-color: #770000;
  border-color: #770000;
  color: white;
}



.btn-music {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  background-color: var(--second-color);
  color: var(--main-color);
  border: none;
  width: 55px;
  height: 55px;
  font-size: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-music:hover {
  background-color: #770000;
  transform: scale(1.05);
}

.image-collage {
  column-count: 1;
  column-gap: 15px;
  padding: 20px;
}

@media (min-width: 576px) {
  .image-collage {
    column-count: 2;
  }
}

@media (min-width: 992px) {
  .image-collage {
    column-count: 3;
  }
}

.image-collage img,
.image-collage video {
  width: 100%;
  height: auto;
  margin-bottom: 15px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  break-inside: avoid;
  display: block;
  object-fit: cover;
}

.section-fotos {
  z-index: 200;
  background-color: var(--white);
  color: var(--third-color);
  border: 1px solid #000;
  padding-top: 150px;
  position: relative;
}

#btn-prev,
#btn-next {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 1.5rem;
  line-height: 1;
  padding: 0;
  transition: background-color 0.2s, transform 0.2s;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
  margin:10px;
}

#btn-prev:hover,
#btn-next:hover {
  background-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

#btn-prev:disabled,
#btn-next:disabled {
  opacity: 0.3;
  pointer-events: none;
}

#previewRow {
  max-height: 300px;
  overflow-x: auto;
  overflow-y: hidden;
}

.bootbox.modal {
  z-index: 99999 !important;
}

.table tr {
  transition: background-color 0.3s ease;
}
.table tr:hover {
  background-color: rgba(255,255,255,0.05);
}