body {
    background-color: #F5F5F5;
    font-family: 'David', Arial, sans-serif;
    color: #333333;
    margin: 0;
    direction: rtl;
}

h1 {
    font-size: 3rem;
    text-shadow: 1px 1px #333;
    letter-spacing: 2px;
    color: #a0baaa; /* or any color of your choice */
    text-align: center;
    font-family: 'David', Arial, sans-serif;
}

header {
  background-color: #FFFFFF;
  padding: 20px;
}

nav {
    position: sticky;
    top: 0;
    z-index: 999;
    border-bottom: 1px solid black;
    background-color: #EDEDED;
    padding: 10px;
}

nav a {
  text-decoration: none;
  color: #333333;
  padding: 5px 18px;
  margin: 0 5px;
  border-radius: 5px;
  
}

nav a:hover {
  background-color: #333333;
  color: #FFFFFF;
}

nav a.active {
  background-color: #333333;
  color: #FFFFFF;
  font-weight: bold;
  
}

main {
  padding: 20px;
}
/* set the opacity to 0 to hide the element */
.intro {
  opacity: 0;
}

/* set the transition to gradually increase the opacity over 1 second */
.intro {
  transition: opacity 1s ease-in;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 80%;
  margin: 0 auto;
}

/* set the opacity to 1 to show the element */
.intro.show {
  opacity: 1;
}
.avatar {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease-out;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar.small {
    width: 60px;
    height: 60px;
    top: 55px;
    opacity: 0.7;
}

.Profile-pic {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  margin-bottom: 20px;
}

footer {
  background-color: #FFFFFF;
  padding: 20px;
  text-align: center;
}


.center_right2 {
    margin-right: 0px;
}


.section-divider {
  height: 3px;
  margin: 30px 0;
  background-color: #333;
  border: none;
}
 .book-section {
      margin: 50px 0;
    }
    .book-section h2 {
      font-size: 36px;
      margin-bottom: 20px;
      text-align: center;
    }
    .book {
      display: inline-block;
      margin: 0 10px 20px;
      position: relative;
    }
    .book img {
      width: 160px;
      transition: all 0.3s ease-in-out;
    }
   .book:hover img {
      width: 200px;
    }


.book-list {
    display: table-row;
    flex-wrap: wrap;
    justify-content: space-between;
    max-width: 800px; /* Adjust the maximum width as needed */
    margin: 0 auto;
}

    .book-list li {
        width: 23%; /* Adjust the width as needed to fit 4 books in one line */
        margin-bottom: 20px;
    }

    .book-list img {
        width: 20px;
        height: auto;
    }

        .book-list li img:hover {
            transform: scale(1.1);
        }

.tooltip {
  position: absolute;
  visibility: hidden;
  opacity: 0;
  background-color: #333;
  color: #fff;
  padding: 5px;
  border-radius: 5px;
  transition: opacity 0.3s ease-in-out;
}

.book:hover .tooltip {
  visibility: visible;
  opacity: 1;
}
.book-title {
    position: absolute;
    visibility: visible;
    opacity: 1;
    background-color: #F5F5F5;
    color: rgba(0, 0, 0, 0.3);
    padding: 5px;
    border-radius: 5px;
    margin-bottom: auto;
}

.form-row {
  display: flex;
  justify-content: space-between;
  align-items: right;
  margin-bottom: 1rem;
}

.form-row label {
  font-weight: bold;
  margin-right: 1rem;
  flex: 1;
}

.form-row input,
.form-row select,
.form-row textarea {
  flex: 2;
  padding: 0.5rem;
  border-radius: 0.25rem;
}


/* set the transition to gradually increase the opacity and move the element down over 1 second */
.section {
    font-size:20px;
    line-height:1.5;
    margin: 0 auto;
    width: 76%;
    padding: 40px;
    margin-top: -20px;
    opacity: 0.2;
    transform: translateY(50px);
    transition: opacity 1s ease-in-out, transform 1s ease-in-out;
}
    .section ol {
        margin: 0;
        padding: 0;
        counter-reset: item;
    }

    .section li {
        counter-increment: item;
        margin-bottom: 1rem;
        list-style-type: none;
        display: block;
    }
        .section li:before {
            content: counter(item) ".";
            font-weight: bold;
            margin-right: 10px; /* Adjust the margin as needed */
        }

        .section li[dir="ltr"] {
            justify-content: flex-end;
        }

    .section b {
        font-size: 2rem;
        text-shadow: 1px 1px #333;
        letter-spacing: 2px;
        color: #a0baaa; /* or any color of your choice */
        text-align: center;
        font-family: 'David', Arial, sans-serif;
    }

    .section a {
        color: #0936ff;
        text-decoration: none;
    }

        .section a:hover {
            color: #000;
            text-decoration: underline;
            transform: translateY(-4px);
        }

    .section .red {
        color: red;
    }


/* set the opacity to 1 and move the element down to its original position */
    .section.show {
        background-color: white;
        box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.2);
        opacity: 1;
        transform: translateY(0);
    }


.students-list {
    list-style-type: none;
    font-size:20px;
    padding: 0;
}

    .students-list li {
        
        margin-bottom: 10px;
        padding: 10px;
        border-radius: 5px;
    }


.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 4px; /* Adjust the height as needed */
    background-color: #a0baaa; /* Adjust the color as needed */
    z-index: 9999;
    transition: width 0.1s ease-in-out;
}

.wrapper {
    position: relative;
    top: 0;
    right: 0;
    opacity: 0.5;
    transform: translateY(0%);
    transition: transform 0.3s ease-in-out;
    z-index: 1;
    background-color: #F5F5F5;
    padding: 2px;
}
    .wrapper.scrolled {
        position: sticky;
        top: 30px;
        transform: translateY(-10%);
        opacity: 0.9;
        height: 70%;
        height: 60px;
    }
.center_content {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    width: 87%;
    max-width: 1200px;
    margin: 0 auto;
}

.active {
    font-weight: bold;
    color: #000;
    text-decoration: underline;
    transform: translateY(-4px);
}
.custom-list {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-top: 20px;
    padding: 0;
}

.custom-list li {
    display: flex;
    align-items: center;
    position: relative;
    margin-bottom: 0.5rem;
    padding-left: 50px;
}

        .custom-list li:before {
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: #333;
        }

    .custom-list li a {
        display: flex;
        align-items: center;
        justify-content: center;
        flex: 1;
        padding: 0.4rem;
        font-size: 1rem;
        font-weight: 600;
        color: #333;
        background-color: #fff;
        border-radius: 5px;
        text-decoration: none;
        box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.1);
        transition: all 0.2s ease-in-out;
        min-width:250px; /* Adjust the value as needed */
    }

            .custom-list li a:hover {
                transform: translateY(-5px);
                box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.2);
            }

            .custom-list li a[target="_blank"]::after {
                content: ">";
                font-size: 12px;
                margin-left: 5px;
                color: #999;
            }

        .custom-list li br {
            display: none;
        }

        .custom-list li:last-of-type {
            margin-bottom: 0;
        }