/* ==========================================================================
   Junta Directiva · Fundación Educativa Cristiana Gracia y Amor
   Estilos base del motor de presentación (independientes de Tailwind CDN)
   ========================================================================== */

html, body {
  height: 100%;
  width: 100%;
}

/* Oculta la barra de scroll si algún slide llegara a desbordar en móvil */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(212, 175, 55, 0.4) transparent;
}
*::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
*::-webkit-scrollbar-thumb {
  background-color: rgba(212, 175, 55, 0.4);
  border-radius: 999px;
}

/* --------------------------------------------------------------------------
   Motor de diapositivas
   -------------------------------------------------------------------------- */
#presentation {
  position: relative;
}

.slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  opacity: 0;
  transform: translateX(40px) scale(0.98);
  pointer-events: none;
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
}

.slide.active {
  opacity: 1;
  transform: translateX(0) scale(1);
  pointer-events: auto;
  z-index: 10;
}

.slide.exit-left {
  opacity: 0;
  transform: translateX(-40px) scale(0.98);
}

.slide.exit-right {
  opacity: 0;
  transform: translateX(40px) scale(0.98);
}

/* Regla de oro: cero scroll vertical en pantalla completa de escritorio
   (el escenario real de esta presentación). Por debajo de 1024px —
   tablets/móviles, donde no aplica el flujo "F11"— se deja un scroll
   de respaldo para no perder información en pantallas muy angostas. */
@media (max-width: 1023px) {
  .slide {
    overflow-y: auto;
    overflow-x: hidden;
  }
}

/* --------------------------------------------------------------------------
   Animación de entrada escalonada de contenido dentro de cada slide
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--d, 0ms);
}

.slide.active .reveal {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Tarjetas giratorias 3D (Flip Cards) — Orden del día
   -------------------------------------------------------------------------- */
.flip-card {
  position: relative;
  width: 100%;
  perspective: 1800px;
  cursor: pointer;
  outline: none;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.65s cubic-bezier(0.4, 0.15, 0.15, 1);
  transform-style: preserve-3d;
}

/* Activa el giro con el mouse (solo en dispositivos que realmente soportan hover) */
@media (hover: hover) and (pointer: fine) {
  .flip-card:hover .flip-card-inner,
  .flip-card:focus-visible .flip-card-inner {
    transform: rotateY(180deg);
  }
}

/* Activa el giro al tocar/pulsar (móvil y teclado) */
.flip-card.is-flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

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

.flip-card:focus-visible {
  box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.6);
  border-radius: 1rem;
}

/* --------------------------------------------------------------------------
   Modal de documentos PDF (contrato, cronograma, etc.)
   -------------------------------------------------------------------------- */
.pdf-modal {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}

.pdf-modal.is-open {
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease, visibility 0s linear 0s;
}

/* --------------------------------------------------------------------------
   Controles de navegación
   -------------------------------------------------------------------------- */
.nav-btn {
  cursor: pointer;
}
.nav-btn:active:not(:disabled) {
  transform: scale(0.9);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background-color: rgba(255, 255, 255, 0.25);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}
.dot:hover {
  background-color: rgba(255, 255, 255, 0.5);
}
.dot.active {
  width: 20px;
  background-color: #d4af37;
}

/* --------------------------------------------------------------------------
   Fondos decorativos animados
   -------------------------------------------------------------------------- */
@keyframes blob-float-slow {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.08); }
}
@keyframes blob-float-slower {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-25px, 25px) scale(1.05); }
}
.animate-blob-slow {
  animation: blob-float-slow 14s ease-in-out infinite;
}
.animate-blob-slower {
  animation: blob-float-slower 18s ease-in-out infinite;
}

/* Respeta accesibilidad: reduce animaciones si el usuario lo prefiere */
@media (prefers-reduced-motion: reduce) {
  .slide,
  .reveal,
  .flip-card-inner,
  .animate-blob-slow,
  .animate-blob-slower {
    transition: none !important;
    animation: none !important;
  }
}