body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    background-color: #f0f2f5;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-bar {
    background-color: #6A5ACD;
    color: white;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.top-bar h1 {
    margin: 0;
    font-size: 1.5em;
}

.user-info {
    display: flex;
    align-items: center;
}

.user-info span {
    margin-right: 15px;
}

.user-info a, .user-info button {
    color: white;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    background-color: transparent;
    border: 1px solid white;
    cursor: pointer;
    font-size: 0.9em;
    margin-left: 10px;
}

.user-info a:hover, .user-info button:hover {
    background-color: rgba(255,255,255,0.1);
}

.icon-button {
    background: none;
    border: none;
    color: white;
    font-size: 1.5em;
    cursor: pointer;
    padding: 0 5px;
}
.icon-button:hover {
    opacity: 0.8;
}


.container {
    flex-grow: 1;
    width: 90%;
    max-width: 1200px;
    margin: 30px auto;
    padding: 20px;
    background-color: white;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
    border-radius: 8px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.page-header h2 {
    margin: 0;
    color: #333;
}

.button, button {
    background-color: #6A5ACD;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.2s ease-in-out;
}

button.secondary {
    background-color: #777;
}
button.danger {
    background-color: #e74c3c;
}

.button:hover, button:hover {
    opacity: 0.85;
}


/* Form Styles */
.form-container {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
}

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

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

.form-group input[type="text"],
.form-group input[type="password"],
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 1em;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-actions {
    margin-top: 20px;
    text-align: right;
}
.form-actions button {
    margin-left: 10px;
}


/* Table Styles */
.notes-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.notes-table th, .notes-table td {
    border: 1px solid #e0e0e0;
    padding: 12px 15px;
    text-align: left;
    vertical-align: top;
}

.notes-table th {
    background-color: #f9f9f9;
    font-weight: bold;
    cursor: pointer;
}
.notes-table th:hover {
    background-color: #f0f0f0;
}
.notes-table th .sort-icon {
    margin-left: 5px;
    font-size: 0.8em;
}

.notes-table tr:nth-child(even) {
    background-color: #fbfbfb;
}
.notes-table tr:hover {
    background-color: #f5f5f5;
}

.actions-cell button, .actions-cell a {
    margin-right: 5px;
    padding: 5px 8px;
    font-size: 0.9em;
}

/* Markdown Preview */
.markdown-preview {
    border: 1px solid #ddd;
    padding: 15px;
    min-height: 100px;
    background-color: #fff;
    border-radius: 4px;
    margin-top: 10px;
}
.markdown-preview h1, .markdown-preview h2, .markdown-preview h3 {
    margin-top: 0.5em;
    margin-bottom: 0.25em;
}
.markdown-preview p {
    margin-bottom: 0.5em;
    line-height: 1.6;
}
.markdown-preview ul, .markdown-preview ol {
    margin-left: 20px;
    margin-bottom: 0.5em;
}
.markdown-preview pre {
    background-color: #f5f5f5;
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
}
.markdown-preview code {
    font-family: "Courier New", Courier, monospace;
}
.markdown-preview blockquote {
    border-left: 3px solid #ccc;
    padding-left: 10px;
    margin-left: 0;
    color: #666;
}


/* Drag and Drop Area */
#drop-zone {
    border: 2px dashed #ccc;
    padding: 20px;
    text-align: center;
    margin-bottom: 20px;
    border-radius: 8px;
    background-color: #f9f9f9;
}
#drop-zone.drag-over {
    border-color: #6A5ACD;
    background-color: #e8e4f5;
}

/* Alerts */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 4px;
}
.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}
.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}
.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}

#password-strength {
    font-size: 0.9em;
    margin-top: 5px;
}
.password-strength-meter {
    height: 5px;
    background-color: #eee;
    border-radius: 5px;
    margin-top: 3px;
}
.password-strength-meter div {
    height: 100%;
    width: 0;
    background-color: red;
    border-radius: 5px;
    transition: width 0.3s ease, background-color 0.3s ease;
}

#password-strength ul {
    list-style-type: none;
    padding-left: 0;
    font-size: 0.9em;
    margin-top: 5px;
}
#password-strength li {
    margin-bottom: 3px;
}
#password-strength li.valid {
    color: green;
}
#password-strength li.invalid {
    color: red;
}

.notes-table th .sort-icon {
    margin-left: 5px;
    font-size: 0.8em;
    color: #6A5ACD;
    display: inline-block;
}