/* Prost a responsywny styl */
    * {
        box-sizing: border-box;
        font-family: Arial, Helvetica, sans-serif
    }

    body {
        margin: 0;
        background: #f5f7fb;
        color: #222
    }

    .layout {
        display: flex;
        min-height: 100vh
    }

    .sidebar {
        width: 220px;
        background: #1f2937;
        color: #fff;
        padding: 20px
    }

    .sidebar h3 {
        margin-top: 0
    }

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

    .sidebar a {
        color: #ddd;
        text-decoration: none;
        display: block;
        padding: 8px;
        border-radius: 6px
    }

    .sidebar a.active,
    .sidebar a:hover {
        background: #374151;
        color: #fff
    }

    .main {
        flex: 1;
        padding: 20px
    }

    .card {
        background: #fff;
        padding: 15px;
        border-radius: 8px;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    }

    .centered {
        display: flex;
        height: 100vh;
        align-items: center;
        justify-content: center
    }

    .login-card {
        width: 320px
    }

    label {
        display: block;
        margin: 8px 0
    }

    input[type=text],
    input[type=password],
    select,
    input[type=date] {
        width: 100%;
        padding: 8px;
        border: 1px solid #ccc;
        border-radius: 4px
    }

    button {
        padding: 10px 14px;
        border: 0;
        border-radius: 6px;
        background: #2563eb;
        color: #fff;
        cursor: pointer
    }

    .table {
        width: 100%;
        border-collapse: collapse
    }

    .table th,
    .table td {
        padding: 8px;
        border-bottom: 1px solid #eee
    }

    .actions {
        display: flex;
        gap: 8px
    }

    @media(max-width:800px) {
        .layout {
            flex-direction: column
        }

        .sidebar {
            width: 100%
        }
    }

    .pagination {
        margin-top: 12px
    }

    .error {
        color: #b91c1c;
        padding: 8px
    }
    .header {
    background-color: #333;
    color: white;
    padding: 10px;
}
.header .user-info {
    float: right;
}
.menu {
    background-color: #444;
    overflow: hidden;
}
.menu ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}
.menu li {
    float: left;
}
.menu li a {
    display: block;
    color: white;
    padding: 10px 15px;
    text-decoration: none;
}
.menu li a:hover {
    background-color: #666;
}

/* Przyciski dla telefonu */
.menu .icon {
    display: none;
}

/* Małe ekrany */
@media screen and (max-width: 768px) {
    .menu li {float: none; display: none;}
    .menu li a {text-align: left;}
    .menu li.icon {
        float: right;
        display: block;
    }
}

/* Po kliknięciu hamburgera */
.menu.responsive li {
    display: block;
}