body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
}

#app {
    max-width: 600px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #333;
}

.step {
    margin-bottom: 20px;
}

.hidden {
    display: none;
}

input, button {
    display: block;
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

#shifts {
    margin-bottom: 20px;
}

.shift-item {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    padding: 10px;
    margin-bottom: 10px;
}

.shift-item input {
    width: calc(100% - 22px);
    margin-bottom: 5px;
}

#cameraButton, #galleryButton, #uploadButton {
    display: block;
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#cameraButton:hover, #galleryButton:hover, #uploadButton:hover {
    background-color: #45a049;
}

#imagePreview {
    max-width: 100%;
    margin-top: 10px;
    border-radius: 5px;
}

#loadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

#loadingOverlay.hidden {
    display: none;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#loadingOverlay p {
    margin-top: 10px;
    color: white;
    font-size: 18px;
}