body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 600px;
    max-width: 90%;
    transition: width 0.5s ease-in-out;
}

.container.initial-wide {
    width: 80%;
    max-width: 1200px;
}

.container.wide {
    width: 80%;
}

h1 {
    color: #4285f4;
    margin-bottom: 1rem;
}

h2 {
    color: #4285f4;
    font-size: 18px;
    margin-top: 0;
    margin-bottom: 15px;
}

.search-container {
    display: flex;
    margin-bottom: 1rem;
}

input[type="text"] {
    flex-grow: 1;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #dfe1e5;
    border-radius: 24px 0 0 24px;
    outline: none;
}

input[type="file"] {
    display: none;
}

button,
.submit-button,
.upload-pmc-button,
.download-button,
#resetButton,
.reset-button,
.file-upload-label,
#toggleColumns {
    padding: 10px 20px;
    font-size: 16px;
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
    border-radius: 5px;
}

button {
    background-color: #4285f4;
    border-radius: 0 24px 24px 0;
}

button:hover,
.submit-button:hover,
.upload-pmc-button:hover,
.download-button:hover,
.reset-button:hover,
#resetButton:hover,
.file-upload-label:hover {
    background-color: #3367d6;
}

.download-button {
    background-color: #4CAF50;
}

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

#resetButton,
.reset-button {
    background-color: #f44336;
}

#resetButton:hover,
.reset-button:hover {
    background-color: #d32f2f;
}

.reset-button-container,
.button-container {
    display: flex;
    justify-content: flex-end;
    margin-top: 20px;
}

.button-container {
    justify-content: space-between;
}

.checkbox-container {
    text-align: left;
    margin: 10px 0 1rem;
}

.checkbox-container h3 {
    margin-bottom: 0.5rem;
    color: #4285f4;
}

.checkbox-container label {
    display: block;
    margin-bottom: 0.5rem;
}

.checkbox-columns {
    display: flex;
    flex-wrap: wrap;
}

.checkbox-columns label {
    width: 50%;
    padding: 5px;
    box-sizing: border-box;
}

.section {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 20px;
    margin-bottom: 20px;
}

.checkbox-container .button-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

#enableReachButton {
    background-color: white;
    border: 1px solid red;
    padding: 8px 16px;
    cursor: pointer;
    border-radius: 4px;
    font-weight: bold;
}

#enableReachButton:hover {
    background-color: #ffe6e6;
}

.column-selection-section {
    background-color: #f0f8ff;
}

.file-upload-section,
.submit-section {
    text-align: center;
    margin-top: 20px;
}

.file-upload-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.file-input-wrapper {
    display: flex;
    align-items: center;
    flex: 0 0 auto;
    flex-direction: column;
}

.file-upload-label {
    background-color: #4CAF50;
    display: inline-block;
}

.file-chosen-wrapper {
    flex-grow: 1;
    text-align: left;
    margin: 0 15px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

#file-chosen {
    display: inline-block;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-style: italic;
    color: #666;
    min-width: 200px;
    margin-left: 120px;
    text-align: center;
}

.pmc-upload-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.upload-pmc-button {
    background-color: #4285f4;
    flex: 0 0 auto;
    margin-bottom: 10px;
}

.pmc-info {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: #666;
}

.pmc-info i {
    margin-right: 5px;
    color: #007bff;
}

#toggleColumns {
    margin-top: 10px;
    font-size: 14px;
    background-color: #4285f4;
}

.hidden {
    display: none;
}

.results {
    margin-top: 2rem;
    text-align: left;
}

.result-message {
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    font-size: 16px;
    line-height: 1.5;
    font-style: italic;
    color: #666;
}

.result-message i {
    margin-right: 10px;
    font-size: 20px;
}

.result-message.info {
    background-color: #e7f3fe;
    border: 1px solid #b6d4fe;
    color: #084298;
}

.result-message.warning {
    background-color: #fff3cd;
    border: 1px solid #ffecb5;
    color: #664d03;
}

#loadingMessage {
    margin-top: 1rem;
    font-style: italic;
    color: #666;
}

.table-container {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    border-collapse: collapse;
    width: 100%;
    margin-top: 20px;
    min-width: 600px;
}

.data-table th,
.data-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
    white-space: nowrap;
}

.data-table th {
    background-color: #f2f2f2;
    font-weight: bold;
}

.data-table tr:nth-child(even) {
    background-color: #f9f9f9;
}