@media (max-width: 768px) {
    .about-box {
        flex: 1 1 100%;
        padding: 20px;
        text-align: center;
    }

    #about-section h2 {
        font-size: 22px;
        font-weight: bold;
    }

    .about-box h4 {
        font-size: 16px;
        font-weight: bold;
    }
}

@media (max-width: 480px) {
    .section {
        width: 100%;
        font-size: 14px;
        padding: 20px;
    }

    #goal-setting,
    #achievement-list li {
        font-size: 14px;
    }

    #about-section {
        padding: 20px 8px;
    }

    .about-box {
        padding: 12px;
    }
}

header {
    background: #04072b;
    color: #fff;
    padding: 15px 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgb(150, 157, 252);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar h1 {
    font-size: 24px;
    font-weight: bold;
    margin: 0;
}

@media (max-width: 768px) {
    header {
        padding: 12px 15px;
        text-align: center;
    }

    .navbar h1 {
        font-size: 20px;
     
    }
}

@media (max-width: 480px) {
    .navbar h1 {
        font-size: 18px;
    }
    header {
        padding: 12px 25px;
        text-align: center;
        width: 380px;
    }
}

@media (max-width: 768px) {
    .tbgh {
        flex-direction: column;
        align-items: center;
    }

    .graph, .totalAver {
        margin: 15px 0;
    }

    .pie {
        width: 280px;
        height: 280px;
    }
}

@media (max-width: 480px) {
    #statistics {
        padding: 20px 8px;
    }

    .graph {
        width: 230px;
    }

    .pie {
        width: 230px;
        height: 230px;
    }
}

@media screen and (max-width: 768px) {
    #marks-table {
        width: 100%;
    }

    #marks-table thead {
        display: none;
    }

    #marks-table tr {
        display: block;
        margin-bottom: 12px;
        border-radius: 10px;
        background: #f9f9f9;
        padding: 12px;
        box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.1);
    }

    #marks-table td {
        display: block;
        text-align: right;
        padding: 8px;
        border-bottom: 1px solid #ddd;
    }

    #marks-table td::before {
        content: attr(data-label);
        float: left;
        font-weight: bold;
        color: #333;
    }
}

.sidebar {
    position: fixed;
    left: 0;
    width: 250px;
    height: 100%;
    background: #0e0030;
    transition: left 0.3s ease;
}

@media (max-width: 768px) {
    .sidebar {
        left: -250px;
        top:50px;
    }
    .sidebar.active {
        left: 0;
    }
    main {
        margin-left: 0;
    }
    .navbar h1 {
        font-size: 16px;
        margin-left: 25px;
    }
}

.menu-toggle {
    position: fixed;
    top: 20px;
    left: 15px;
    font-size: 22px;
    color: #fff;
    cursor: pointer;
    z-index: 1100;
    display: none;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    
    }
}

@media (max-width: 768px) {
    .container-input {
        flex-direction: column;
        align-items: center;
    }

    .form {
        margin-right: 0;
        width: 100%;
    }

    .pic {
        width: 100%;
        max-width: 280px;
    }

    input[type="text"], input[type="number"] {
        max-width: 100%;
        width: 100%;
        padding: 10px;
    }
}

@media (max-width: 480px) {
    #input {
        padding: 12px;
    }

    .container-input {
        gap: 15px;
    }

    .pic {
        max-width: 220px;
    }
}