html,
body {
    height: 100%;
    width: 100%;
    background-color: #FFFFFF;
}

body.theme-dark {
    background-color: #111;
}

/* Loader */
.preloader {
  position: fixed;
  inline-size: 100%;
  block-size: 100%;
  background-color: #fff;
  display: grid;
  place-items: center;

}

.theme-dark .preloader {
  background-color: #111;
}

@media (max-width: 1199px) {.header {display: none}}

.preloader-img {
  animation: animloaderimg 3000ms ease-in-out infinite;
}


/* Book Loader - 50% smaller and moved slightly more to the right */
.book {
    position: fixed;
    width: 60px;  /* 50% smaller than previous size */
    height: 80px; /* 50% smaller than previous size */
    top: 54%;
    left: 50.5%;
/*    transform: translate(-50%, -50%);*/

}

/* Base page styling with colorful backgrounds */
.page {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 5px;
    transform-origin: left;
    box-shadow: 2px 4px 8px rgba(0, 0, 0, 0.3);
    opacity: 1;
}

/* Colorful gradients for each page */
.page:nth-child(1) {
    background: linear-gradient(to right, #ff7e5f, #feb47b); /* Warm gradient */
    animation: flip 0.8s infinite ease-in-out; /* Faster animation */
    animation-delay: 0s;
}
.page:nth-child(2) {
    background: linear-gradient(to right, #6a11cb, #2575fc); /* Purple to blue gradient */
    animation: flip 0.8s infinite ease-in-out; /* Faster animation */
    animation-delay: 0.5s;
}
.page:nth-child(3) {
    background: linear-gradient(to right, #00b4db, #0083b0); /* Aqua gradient */
    animation: flip 0.8s infinite ease-in-out; /* Faster animation */
    animation-delay: 1s;
}

/* Page flipping animation */
@keyframes flip {
    0% { transform: rotateY(0deg); opacity: 1; }
    25% { transform: rotateY(-45deg); opacity: 0.9; }
    50% { transform: rotateY(-90deg); opacity: 0.8; }
    75% { transform: rotateY(-135deg); opacity: 0.7; }
    100% { transform: rotateY(-180deg); opacity: 0.6; }
}

/* Dark Theme Adjustments */
.theme-dark .page:nth-child(1) {
    background: linear-gradient(to right, #ff7e5f, #feb47b); /* Warm gradient */
}
.theme-dark .page:nth-child(2) {
    background: linear-gradient(to right, #6a11cb, #2575fc); /* Purple to blue gradient */
}
.theme-dark .page:nth-child(3) {
    background: linear-gradient(to right, #00b4db, #0083b0); /* Aqua gradient */
}


.theme-dark .preloader .loader {
  background: rgba(255, 255, 255, 0.15);
}
.preloader .loader::after {
  content: "";
  width: 30px;
  height: 4.8px;
  background: #000;
  position: absolute;
  top: 0;
  left: 0;
  box-sizing: border-box;
  animation: animloader 2000ms linear infinite;
  border-radius: 50rem;
}

.header {
  position: fixed;
  inset-block-start: 0;
  inset-inline-start: 0;
  inline-size: 100%;
}
.header-container {
  max-inline-size: 1200px;
  margin-inline: auto;
  padding: 1.28rem 1.6rem;
  background-color: #fff;
  box-shadow: 0px 6px 12px -3px rgba(4, 97, 165, 0.1);
  border-radius: 0 0 0.625rem 0.625rem;
}

.theme-dark .header-container {
  background-color: #111;
}
.header .logo {
  max-height: 30px;

}
.placeholder {
  block-size: 0.825rem;
  inline-size: 3rem;
  background-color: #F5F5F5;
  border-radius: 0.3rem;
}

.theme-dark .placeholder {
  background-color: #111;
}


.placeholder-wide {
  inline-size: 12rem;
}

.d-flex {
  display: flex;
}
.align-items-center {
  align-items: center;
}
.justify-content-center {
  justify-content: center;
}
.justify-content-between {
  justify-content: space-between;
}
.flex-column {
  flex-direction: column;
}
.gap-3 {
  gap: 1rem;
}
.gap-4 {
  gap: 1.5rem;
}
.gap-5 {
  gap: 3rem;
}
@keyframes animloader {
  0% {
    left: 0;
    transform: translateX(-100%);
  }
  100% {
    left: 100%;
    transform: translateX(0%);
  }
}
@keyframes animloaderimg {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-1rem);
  }
  100% {
    transform: translateY(0);
  }
}