body {
    background-color: rgb(204, 211, 236);
}

#head {
    display: flex;         
    align-items: center;    
    justify-content: center; 
    width: 100%;
    background-color: darkblue;
    color: white;
    padding: 30px 30px;   
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
}

#head p{
    margin-right: auto;
    margin-left: auto;
}

#head img {
    width: 50px;
    height: 45px; 
    float: left;
}

#drop-down {
    background-color: transparent;
    border: 0;
    position: absolute;
    left: 45px;
    cursor: pointer;
}


#sidebar {
  width: 250px;
  height: 100%;
  position: fixed; /* Or absolute */
  left: -250px; /* Off-screen */
  top: 0;
  background-color: rgba(0, 0, 139, 0.456);
  color: white;
  transition: left 0.3s ease; /* Smooth transition */
  overflow-x: hidden; /* Prevents horizontal scroll */
}

#mainnav {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
    margin-top: 50%;
    font-family:'Times New Roman', Times, serif;
}

.link{
    padding-bottom: 30px;
    a {
        text-decoration:none;
        color: white;
    }
    a:hover {
        scroll-behavior: smooth;
        color: var(--third);
        transform: translate(0px, -2px);
        transition: transform 0.2s ease-in-out;
        cursor: pointer;
    }
    a:visited {
        color: white;
    }
}

#drop-down {
  position: fixed;
  z-index: 10; /* Above sidebar */
  top: 20px;
  left: 0; /* Start at edge */
  cursor: pointer;
}

#sidebar:hover, #drop-down:hover ~ #sidebar { 
  left: 0; /* Slide in */
}

#teacher-greeting {
    margin-top: 100px;
    font-family:Georgia, 'Times New Roman', Times, serif;
    color: rgb(0, 0, 139);
    text-align: center;
    font-size: 75px;
    font-style: bold;
}

#classes {
    font-family: Georgia, 'Times New Roman', Times, serif;
    color: rgba(85, 48, 171, 0.615);
    text-align: center;
    font-size: 50px;
    font-style: italic;
    margin-top: -35px;
}

#leaderboard-section {
    width: min(700px, 90%);
    margin: 20px auto 40px;
    background: white;
    border-radius: 14px;
    padding: 24px 28px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

#leaderboard-title {
    font-family: 'Times New Roman', Times, serif;
    text-align: center;
    color: rgb(0, 0, 139);
    margin: 0 0 6px;
}

#leaderboard-subtitle {
    text-align: center;
    color: #5d5d5d;
    margin: 0 0 16px;
    font-style: italic;
}

#leaderboard-list {
    margin: 0;
    padding-left: 24px;
    font-family: 'Times New Roman', Times, serif;
    color: #1d1d1d;
}

#leaderboard-list li {
    padding: 6px 0;
    font-size: 18px;
}

.leaderboard-empty {
    text-align: center;
    color: #6b6b6b;
    margin: 0;
}

hr {
    width: 40%;
    background-color: rgb(88, 88, 88);
    height: 0.8px;
    border: none;
}

#class-creator {
    text-align: center;
}

#create {
    font-family:'Times New Roman', Times, serif;
    text-align: center; 
    color: whitesmoke;
    text-shadow: 4px 2px 5px rgb(136, 136, 218);
}

#new-class-name {
    font-family:'Times New Roman', Times, serif;
    border-radius: 8px;
    height: 20px;
    border: 1.5px solid rgb(0, 0, 160);
    text-align: center;
}

#new-class-teacher {
    font-family:'Times New Roman', Times, serif;
    border-radius: 8px;
    height: 20px;
    border: 1.5px solid rgb(0, 0, 160);
    text-align: center;
}

#new-class-period {
    font-family:'Times New Roman', Times, serif;
    border-radius: 8px;
    height: 20px;
    border: 1.5px solid rgb(0, 0, 160);
    text-align: center;
}

#button {
    font-family:'Times New Roman', Times, serif;
    border-radius: 8px;
    height: 25px;
    border: 1.5px solid rgb(0, 0, 160);
    text-align: center;
    background-color: rgba(192, 192, 250, 0.762);
    font-style: bold;
}

button:hover {
    transform: scale(1.05);
    transition: transform 0.2s ease-in-out;
    cursor: pointer; 
}

#button-container {
    text-align: center;
}

#button-container button {
    margin-left: 20px;
    margin-right: 20px;
    padding: 15px;
    font-family:'Times New Roman', Times, serif;
    border-radius: 8px;
    border: 1.5px solid rgb(0, 0, 160);
    font-style: bold;
    background-color: white;
    color: rgb(85, 82, 82);
}

.class-card {
    position: relative;
    display: inline-block;
    margin: 10px;
}

.delete-btn {
    position: absolute;
    border: none;
    border-radius: 50%;
    width: 25px;
    height: 25px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #ff4d4d;
    color: white;
    top: -10px;
    right: -10px;
}

.delete-btn:hover {
    transform: scale(1.1);
}

.class-card:hover {
   transform: scale(1.1);
   cursor:pointer;
}

#go-back {
    color: white; 
    text-decoration: none;
    font-size: 18px;
}

#head {
    float: left;
}

#main {
    margin-top: 150px; 
    text-align: center;
}

.profile-container {
    background: white;
    width: 50%;
    margin: 0 auto;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
}

#image-preview-wrapper {
    margin-bottom: 20px;
    width: 150px; 
    height: 150px; 
    border-radius: 50%; 
    border: 3px solid darkblue; 
    object-fit: cover;
    margin-right: auto;
    margin-left: auto;
}

#teacher-details p {
    font-size: 18px;
    color: #333;
}

#account-title {
    margin: 0 auto;      
    font-family: 'Times New Roman', Times, serif;
    letter-spacing: 2px;
    font-size: 20px;
    text-align: center;        
}

#main-profile {
    margin-top: 150px;
}

#profile-pic-display {
    width: 150px;           /* Fixed width */
    height: 150px;          /* Fixed height */
    border-radius: 50%;     /* Makes it a circle */
    object-fit: cover;      /* Crops the image to fit without stretching */
    object-position: center; /* Ensures the middle of the photo is visible */
    display: block;
    margin: 0 auto;         /* Centers the circle on the page */
}

#image-upload {
    display: none;
}

[contenteditable="true"] {
    border-bottom: 1px dashed darkblue;
    padding: 0 5px;
    cursor: text;
}

[contenteditable="true"]:focus {
    outline: none;
    background-color: #f0f4ff;
    border-bottom: 2px solid darkblue;
}

#clear-button {
    font-family:'Times New Roman', Times, serif;
    border-radius: 8px;
    height: 25px;
    border: 1.5px solid rgb(151, 0, 0);
    text-align: center;
    background-color: rgb(253, 149, 149);
    font-style: bold;
    float: right;
}

#save-button {
    font-family:'Times New Roman', Times, serif;
    border-radius: 8px;
    height: 25px;
    border: 1.5px solid rgb(0, 0, 160);
    text-align: center;
    background-color: rgba(192, 192, 250, 0.762);
    font-style: bold;
    float: left;
}

#my-buttons {
    width: 250px;
    margin-left: auto;
    margin-right: auto;
}

.action-button {
    background-color: darkblue; /* Matches header background */
    color: rgb(192, 192, 250);
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
    font-family:'Times New Roman', Times, serif;
    margin-bottom: 50px;
}

.action-button:hover {
    transform: scale(1.05);
}

#annotation-buttons {
   margin-top: 60px;
   text-align: center; 
}

.modal {
    display: none; 
    position: fixed; 
    z-index: 1000; 
    left: 0; top: 0;
    width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.5); 
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 30px;
    border-radius: 15px;
    width: 400px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.close-btn {
    float: right;
    font-size: 28px;
    cursor: pointer;
}

#doc-name-input {
    width: 80%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#pages-container .class-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

#pages-container .class-button {
    background: transparent;
    color: #004080;
    padding: 15px;
    font-size: medium;
    border: none;
    width: 100%;
    cursor: pointer;
    text-align: center;
    font-family:'Times New Roman', Times, serif;
}

#pages-container .delete-btn {
    background-color: #ff4d4d;
    color: white;
    border-radius: 50%;
    width: 25px;
    height: 25px;
    top: -10px;
    right: -10px;
}

#saved-pages-section {
    display: flex;
    flex-direction: column;
    align-items: center; 
    width: 100%;
}
#pages-container {
    flex-wrap: wrap;      
    justify-content: center;
    gap: 20px;
    padding: 20px;
    margin: 0 auto; 
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}     


#pages-container .class-card {
    position: relative;
    width: 220px;         
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #f0f4f8; 
    border: 2px solid #004080;
    border-radius: 8px;
    transition: transform 0.2s;
}