body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #ffffff;
    margin: 0;
    padding: 0;
    color: black;
}
header {
    background: #04072b; 
    color: #fff;
    padding: 20px;
    margin-bottom: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgb(150, 157, 252);
}  
.sidebar {
    width: 250px;
    height: 100vh;
    background-color: #04072b;
    color: #fff;
    position: fixed;
    top:70px;
    left: 0; 
    z-index: 1000;
    padding-top: 45px;
}
.sidebar .user-info {
    text-align: center;
    margin-bottom: 10px;
}
.sidebar .user-picture {
    width: 170px;
    height: 120px;
    object-fit: cover;
    box-shadow: 0 2px 10px rgb(150, 157, 252);
    border-radius: 5px;
}
.user-info img{
    transition: 1s;
}
.user-info img:hover{
    transform: scale(1.1);
}

.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-menu li a {
    display: block;
    padding: 15px 20px;
    color: #fff;
    text-decoration: none;
    transition: background-color 0.3s ease;
    font-weight: bold;
}

.sidebar-menu li a:hover {
    background-color:  rgb(150, 157, 252);
}
main{
    margin-left: 250px; 
    padding: 2px 2px;
    transition: margin-left 0.3s ease;
}
.navbar {
    padding: 10px 0;
}
.navbar h1 {
    margin: 0;
    font-size: 25px;
    color: #ffffff;
}
section {
    display: none;
    padding: 20px;
    margin: 10px auto;
    box-shadow: 0 2px 10px rgb(0, 60, 255);
    width: 90%;
    height: auto;
    background-color: rgb(255, 255, 255);
    border-radius: 6px;
}
section.active {
    display: block;
}

#input {
    display: block;
    padding: 20px;
}

.container-input {
    display: flex;
    flex-wrap: wrap; 
    gap: 30px; 
    padding: 20px;
    text-align: center;
    justify-content: center; 
}

.form {
    flex: 1 1 300px; 
    max-width: 400px;
    margin-right: 0; 
}

.pic {
    width: 100%; 
    max-width: 400px; 
    height: auto; 
    box-shadow: 0 2px 20px rgb(150, 157, 252);
    border-radius: 17px;
}

.image {
    flex: 1 1 300px; 
    max-width: 400px; 
    padding: 20px;
    height: auto; 
}

.image img {
    transition: 1s;
}

.image img:hover {
    transform: scale(1.1);
}

input[type="text"], input[type="number"] {
    border: none;
    border-radius: 0;
    outline: none;
    border-bottom: 2px solid rgb(0, 60, 255);
    background-color: transparent;
    width: 100%; 
    max-width: 350px;
    padding: 10px;
    display: block;
    margin: 15px auto; 
    font-size: 14px;
}

h2 {
    color: rgb(0, 11, 71);
    margin-bottom: 20px;
    text-align: center;
}

#add-module-btn {
    background-color: rgba(0, 35, 192, 0.274);
    color: rgb(0, 11, 71);
    border: 2px solid rgb(0, 60, 255);
    padding: 8px 13px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    margin-top: 10px;
    transition: background-color 0.3s;
}

#add-module-btn:hover {
    background-color: rgb(0, 11, 71);
    color: rgb(255, 255, 255);
    border: 2px solid rgb(255, 255, 255);
}

button:active {
    opacity: 0.5;
}

#display {
    padding: 20px;
    height: auto;
    background-color: white;
}
.csv{
    background-color: rgba(0, 35, 192, 0.274);
    color: rgb(0, 11, 71);
    border: 2px solid rgb(0, 60, 255);
    padding: 8px 13px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    margin-top: 10px;
    transition: background-color 0.3s;
}
.csv:hover {
    background-color: rgb(0, 11, 71);
    color: rgb(255, 255, 255);
    border: 2px solid rgb(255, 255, 255);
}

#marks-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    margin-bottom: 20px;
}

#marks-table th, #marks-table td {
    border: 1px solid #b8b8b8;
}

#marks-table th {
    padding: 12px;
    background-color:rgb(150, 157, 252);
    color: rgb(0, 0, 0);
}

#marks-table td {
    padding: 10px;
    font-size: 13px;
}
button.edit-btn, button.delete-btn {
    margin: 0;
    cursor: pointer;
    border: none;
    color: #000153;
    font-size: 14px;
    background-color: transparent;
    margin-left: 14px;
}

#statistics {
    padding: 50px 20px;
    background-color: #f9f9f9;
    text-align: center;
}

.forh2 {
    padding: 15px;
}

#statistics h2 {
    font-size: 28px;
    color: #04072b;
}

#statistics p {
    font-size: 18px;
    margin-bottom: 10px;
}

.tbgh {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap; 
    gap: 20px; 
}

.graph {
    margin: 20px;
    width: 300px;
    margin-left: 0;
}

.totalAver {
    margin-bottom: 20%;
    margin-right: 20px;
    margin-left: 40px;
}

.pie {
    width: 350px;
    height: 350px;
    padding: 20px;
}

#achievements-section{
    background-color: rgb(255, 255, 255);
    padding: 20px;
    color: black; 
}
#achievement-list li {
    font-size: 18px;
    margin: 10px 0;
    display: flex;
    align-items: center;
     font-weight: bold;
}
#achievement-list .medal {
    width: 50px; 
    height: 50px;
    margin-right: 10px;
    background-color: transparent; 
   
}
#achievement-list .improvement {
    color: #000316;
    font-weight: bold;
}
.goal-container {
    flex: 1;
    padding: 20px;
    border-radius: 10px;
   box-shadow: 0 2px 10px rgb(13, 158, 255);
    font-size: 14px;
    margin: 10px;
}
.goal-list-header {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 20px; 
    font-weight: 600;
    color: #333;
    text-align: left;
    margin-bottom: 15px;
    margin-left: 50px;
    margin-right: 10px;
}
.goal-list{
    list-style: none;
    padding: 0;
    margin: 0;
}
.goal-list li{
    display: grid;
    grid-template-columns: 1fr auto auto; 
    gap: 20px;
    background: #0683ff25;
    padding: 12px;
    margin: 6px 0;
    border-radius: 6px;
    font-size: 14px;
    transition: 0.3s;
    font-weight: bold;
}
.goal-text{
    text-align: left;
}
.buttons {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}
.goal-list button {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
}
.goal-input {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center; 
    margin-top: 20px;
    margin-bottom: 20px;
}
.goal-input input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 19px;
    font-size: 14px;
 
    height: 20px; 
}
.goal-input button{
    background: none;
    font-size: 20px;
    color: rgb(7, 0, 39);
    cursor: pointer;
    border: none;
}

#about-section {
    padding: 50px 20px;
    background-color: #f9f9f9;
    text-align: center;
}

.about-container {
    max-width: 900px;
    margin: auto;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#about-section h2 {
    font-size: 28px;
    color: #04072b;
}

.about-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px; 
    margin-top: 20px;
}

.about-box {
    flex: 1 1 calc(50% - 40px); 
    min-width: 250px; 
    padding: 20px;
    background: #ffffff;
    box-shadow: 0 2px 10px rgb(1, 163, 184);
    border-radius: 6px;
    box-sizing: border-box; 
}

.about-box h4 {
    font-size: 20px;
    color: #04072b;
    margin-bottom: 10px;
}

.about-box ul {
    list-style: none;
    padding: 0;
}

.about-box ul li {
    margin: 8px 0;
}

.about-box ul li a {
    text-decoration: none;
    color: #007BFF;
    transition: 0.3s;
}

.about-box ul li a:hover {
    color: #0056b3;
}

.about-bottom {
    margin-top: 20px;
    font-size: 14px;
    color: #555;
}

@media screen and (max-width: 768px) {
    main {
        margin-left: 0;
        padding: 10px;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    #display {
        padding: 10px;
    }

    #marks-table {
        font-size: 12px;
    }

    #marks-table th, #marks-table td {
        padding: 8px;
    }

    button.edit-btn, button.delete-btn {
        padding: 4px 8px;
        font-size: 12px;
    }
}

@media screen and (max-width: 480px) {
    #display {
        padding: 5px;
    }

    #marks-table {
        font-size: 11px;
    }

    #marks-table th, #marks-table td {
        padding: 6px;
    }

    .container-input {
        gap: 15px;
        padding: 10px;
    }

    .form, .image {
        flex: 1 1 100%;
        max-width: 100%;
    }
}