body {
    font-family: Arial, sans-serif;
    margin: 0 auto;
    padding: 20px;
    text-align: center; /* Center align elements */
    background-color: #f4f4f4; /* Light background */
}

.playlist-container {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid #ccc;
    padding: 10px;
    margin-top: 20px;
    text-align: left; /* Align playlist text to the left */
}

li {
    cursor: pointer;
    list-style-type: none;
}

.play-button, .next-button, .prev-button {
    border: 0;
    background: transparent;
    cursor: pointer;
    transition: background-color 0.3s ease; /* Smooth transition for hover */
}

.play-button {
    box-sizing: border-box;
    margin: 5% auto;
    height: 50px; /* Consistent size for play button */
    border-color: transparent transparent transparent #007bff;
    border-style: solid;
    border-width: 25px 0 25px 40px; /* Adjusted size */
}

.play-button.paused {
    border-style: double;
    border-width: 25px 0 25px 40px; /* Same size for pause button */
    height: 50px; /* Consistent height */
}

.play-button:hover {
    border-color: transparent transparent transparent #0056b3; /* Darker blue on hover */
}

.next-button, .prev-button {
    padding: 0;
    margin: 10px;
    border-color: transparent #007bff transparent #007bff;
    border-style: solid;
}

.next-button {
    border-width: 15px 0 15px 25px;
    box-shadow: 8px 0 0 0 #007bff;
}

.next-button:hover {
    border-color: transparent #0056b3 transparent #0056b3;
    box-shadow: 8px 0 0 0 #0056b3;
}

.prev-button {
    border-width: 15px 25px 15px 0;
    box-shadow: -8px 0 0 0 #007bff;
}

.prev-button:hover {
    border-color: transparent #0056b3 transparent #0056b3;
    box-shadow: -8px 0 0 0 #0056b3;
}

.slider {
    width: 90%; /* Make slider wider for easier interaction */
    margin: 10px auto; /* Center align the slider */
}

.slidecontainer {
    margin: 20px 0; /* Space out elements */
}

/* Upload progress bar styles */
.progress-bar {
    width: 100%;
    height: 20px;
    background-color: #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    margin: 10px 0;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #007bff, #0056b3);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 10px;
}

#uploadProgress {
    margin: 15px 0;
    text-align: center;
}

#progressText {
    font-weight: bold;
    color: #007bff;
    margin-left: 10px;
}

#uploadStatus {
    margin: 10px 0;
    padding: 8px;
    border-radius: 4px;
    font-weight: bold;
}

#uploadStatus:not(:empty) {
    background-color: #e7f3ff;
    border: 1px solid #007bff;
    color: #0056b3;
}

/* Form styling improvements */
#uploadForm {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin: 20px 0;
}

#uploadButton {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin-left: 10px;
    transition: background-color 0.3s ease;
}

#uploadButton:hover:not(:disabled) {
    background-color: #0056b3;
}

#uploadButton:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
}

#uploadFile {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-right: 10px;
}

/* RFID mapping form styling */
#editMappingForm {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin: 20px 0;
    text-align: left;
}

#editMappingForm label {
    display: block;
    margin: 10px 0 5px 0;
    font-weight: bold;
}

#editMappingForm input[type="text"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-bottom: 10px;
    box-sizing: border-box;
}

#editMappingForm button {
    background-color: #28a745;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin-top: 10px;
    transition: background-color 0.3s ease;
}

#editMappingForm button:hover {
    background-color: #218838;
}

/* Responsive design improvements */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    
    .slider {
        width: 95%;
    }
    
    #uploadForm, #editMappingForm {
        padding: 15px;
    }
    
    #uploadButton, #editMappingForm button {
        width: 100%;
        margin: 10px 0;
    }
    
    #uploadFile {
        width: 100%;
        margin: 10px 0;
    }
}