* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            display: flex;
            font-family: 'Inter', sans-serif;
            background-color: #f0f2f5;
            color: #2d3748;
            min-height: 100vh;
        }


        .sidebar {
            width: 250px;
            background: #1a202c;
            color: #fff;
            padding: 30px 20px;
            box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
            flex-shrink: 0;
        }

        .sidebar h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 30px;
            text-align: center;
        }

        .sidebar ul {
            list-style: none;
        }

        .sidebar ul li {
            margin-bottom: 20px;
        }

        .sidebar ul li a {
            color: #e2e8f0;
            text-decoration: none;
            font-weight: 500;
            padding: 10px 15px;
            display: block;
            border-radius: 8px;
            transition: background 0.2s;
        }

        .sidebar ul li a:hover {
            background-color: #2d3748;
        }

        .content {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .header {
            background: #fff;
            padding: 15px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }

        .header img {
            height: 40px;
        }

        .header div {
            font-weight: 500;
            font-size: 16px;
            color: #4a5568;
        }

        main {
            padding: 30px;
            flex-grow: 1;
            background-color: #f7fafc;
        }


        table.dataTable {
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
        }

        .logout-link {
            padding: 6px 14px;
            border-radius: 6px;
            font-weight: 600;
            background-color: #fff;
            color: #dc3545;
            border: 1px solid #dc3545;
            transition: 0.3s;
        }

        .logout-link:hover {
            background-color: #dc3545;
            color: #fff;
        }
.dashboard-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(6px);
    border-left: 5px solid #0d6efd;
    border-right: 5px solid #0d6efd;
    transition: all 0.3s ease-in-out;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}
.dashboard-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.dashboard-card i {
    font-size: 22px;
    padding: 14px;
    background: rgba(13, 110, 253, 0.1);
    border-radius: 50%;
    color: inherit;
    margin-right: 12px;
}

.dashboard-card h5 {
    font-weight: 600;
    margin-bottom: 4px;
    color: #212529;
}

.dashboard-card p {
    color: #6c757d;
    font-size: 14px;
}

.logout-link {
    padding: 6px 14px;
    border-radius: 6px;
    font-weight: 600;
    background-color: #fff;
    color: #dc3545;
    border: 1px solid #dc3545;
    transition: 0.3s;
}
.logout-link:hover {
    background-color: #dc3545;
    color: #fff;
}

    .file-upload-wrapper {
        position: relative;
        margin-bottom: 15px;
        border: 2px solid #3182ce;
        border-radius: 10px;
    }

    .file-upload-wrapper label {
        display: block;
        font-weight: 600;
        margin-bottom: 6px;
        font-family: Arial, sans-serif;
    }

    .file-upload-input {
        opacity: 0;
        position: absolute;
        left: 0;
        top: 0;
        height: 100%;
        width: 100%;
        cursor: pointer;
    }

    .custom-file-upload {
        display: inline-block;
        background-color: #3182ce;
        color: white;
        padding: 10px 20px;
        font-size: 14px;
        border-radius: 4px;
        border: none;
        cursor: pointer;
        font-family: Arial, sans-serif;
        transition: background-color 0.3s ease;
    }

    .custom-file-upload:hover {
        background-color: #0056b3;
    }

    .file-name {
        margin-left: 10px;
        font-style: italic;
        color: #333;
    }