/* Estilos globales y preload */
*,
::after,
::before {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

.hidden {
  display: none;
}

img {
  vertical-align: middle;
  border-style: none;
}

/* Preloader de inicio de la pagina*/
#preloader {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  background: linear-gradient(135deg, rgba(22, 34, 144, 0.95) 0%, rgba(22, 34, 144, 0.9) 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

#particles-js {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

#particles-js canvas {
  display: block;
}

/* Contenedor del logo y del círculo de carga */
.preloader-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

/* Logo más grande */
.preloader-logo {
  width: 380px;
  margin-bottom: 30px;
  opacity: 0;
  animation: fadeInLogo 1.5s ease-in-out forwards;
}

/* Loader innovador - Pulse rings */
.loader {
  width: 120px;
  height: 120px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.loader::before,
.loader::after {
  content: '';
  position: absolute;
  border: 4px solid transparent;
  border-radius: 50%;
  animation: pulse-loader 2s ease-in-out infinite;
}

.loader::before {
  width: 100%;
  height: 100%;
  border-top-color: #00d4ff;
  border-right-color: #00d4ff;
  animation-delay: 0s;
}

.loader::after {
  width: 70%;
  height: 70%;
  border-bottom-color: #a855f7;
  border-left-color: #a855f7;
  animation-delay: 0.3s;
}

.loader-inner {
  width: 40%;
  height: 40%;
  background: linear-gradient(135deg, #00d4ff, #a855f7);
  border-radius: 50%;
  animation: pulse-dot 1.5s ease-in-out infinite;
}

/* Animación de aparición del logo */
@keyframes fadeInLogo {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Animación del loader tipo pulse */
@keyframes pulse-loader {
  0% {
    transform: rotate(0deg) scale(1);
    opacity: 1;
  }
  50% {
    transform: rotate(180deg) scale(1.1);
    opacity: 0.7;
  }
  100% {
    transform: rotate(360deg) scale(1);
    opacity: 1;
  }
}

/* animacion del centro */
@keyframes pulse-dot {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(0.8);
    opacity: 0.6;
  }
}

/* Responsividad: Optimizado para móviles */
@media (max-width: 768px) {
  .preloader-logo {
    width: 200px;
  }

  .loader {
    width: 70px;
    height: 70px;
    border-width: 4px;
  }
}