body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    background-color: #007bff;
    padding: 10px 20px;
    color: white;
}

h1, h2 {
    color: #333;
    margin-bottom: 20px;
}

.header h1 {
    color: white;
    margin: 0;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: #f8f8f8;
}

.hidden-file-input {
    display: none;
}

.file-input-label {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.choose-file-btn {
    background-color: #007bff;
    color: white;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 10px;
}

#file-name {
    color: #666;
}

.upload-btn, .logout-btn, .login-btn {
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.upload-btn:hover, .logout-btn:hover, .login-btn:hover {
    background-color: #0056b3;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

tr:nth-child(even) {
    background-color: #f8f8f8;
}

.file-icon {
    width: 24px;
    height: 24px;
    margin-right: 10px;
    vertical-align: middle;
}

.action-buttons {
    display: flex;
    gap: 10px;
}

.view-btn, .delete-btn, .copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.view-btn img, .delete-btn img, .copy-btn img, .edit-btn img {
    width: 24px;
    height: 24px;
}

.edit-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.cancel-btn {
    background-color: #6c757d;
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    display: inline-block;
}

.cancel-btn:hover {
    background-color: #5a6268;
}

#pdf-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

#pdf-viewer {
    flex-grow: 1;
    position: relative;
    overflow: auto;
}

.viewer-controls {
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.viewer-controls button {
    background-color: #289CAF;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin: 0 5px;
}

.viewer-controls button:hover {
    background-color: #1c7a8c;
}

#pdf-canvas {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.login-form {
    max-width: 400px;
    margin: 0 auto;
}

.login-form h2 {
    text-align: center;
    color: #007bff;
}

.search-container {
    display: flex;
    margin-bottom: 20px;
}

#search-input {
    flex-grow: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
}

#search-btn {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
}

#search-btn:hover {
    background-color: #0056b3;
}

@media (max-width: 768px) {
    .viewer-controls {
        flex-wrap: wrap;
    }

    .viewer-controls button {
        margin-bottom: 5px;
    }
}