.inbox-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.inbox-header h1 {
    margin: 0;
}
.inbox-header p {
    margin: 0;
    font-size: 1.1em;
    color: #555;
    font-weight: 500;
}
.inbox-container {
    display: flex;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    min-height: 500px;
    overflow: hidden;
}
.email-list-pane {
    width: 35%;
    border-right: 1px solid #e0e0e0;
    overflow-y: auto;
}
.email-viewer-pane {
    width: 65%;
    padding: 20px;
    overflow-y: auto;
}
.email-list-placeholder, .email-viewer-placeholder {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    color: #888;
}
.email-item {
    padding: 15px;
    border-bottom: 1px solid #e0e0e0;
    cursor: pointer;
}
.email-item:hover {
    background-color: #f5f5f5;
}
.email-item.active {
    background-color: #e0e7ff;
}
.email-item-from {
    font-weight: bold;
}
.email-item-subject {
    color: #333;
}
.email-item-date {
    font-size: 0.8em;
    color: #777;
    float: right;
}
.email-viewer-header {
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 15px;
    margin-bottom: 15px;
}
.email-viewer-header h3 {
    margin: 0 0 5px 0;
}
.email-viewer-body {
    white-space: pre-wrap; /* Preserve line breaks */
    word-wrap: break-word;
}