/* 基础样式 */
.tce-container {
    max-width: 800px;
    margin: 0 auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 标签页样式 */
.tce-tabs {
    display: flex;
    border-bottom: 1px solid #ddd;
    margin-bottom: 20px;
}

.tce-tab {
    padding: 12px 24px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: #555;
    transition: all 0.3s ease;
}

.tce-tab:hover {
    color: #0073aa;
    background-color: #f5f5f5;
}

.tce-tab.active {
    color: #0073aa;
    border-bottom-color: #0073aa;
}

/* 内容区域 */
.tce-tab-content {
    display: none;
    padding: 20px 0;
}

.tce-tab-content.active {
    display: block;
}

/* 表单样式 */
.tce-form {
    background: #fff;
    padding: 20px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.tce-form-group {
    margin-bottom: 20px;
}

textarea#tce-email-message {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    min-height: 200px;
    resize: vertical;
}

.tce-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.tce-form-group input[type="text"],
.tce-form-group input[type="email"],
.tce-form-group input[type="date"],
.tce-form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.tce-form-actions {
    margin-top: 30px;
    text-align: right;
}

.tce-button {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tce-button-primary {
    background-color: #0073aa;
    color: #fff;
}

.tce-button-primary:hover {
    background-color: #005177;
}

/* 消息提示 */
.tce-message {
    padding: 12px 16px;
    margin: 10px 0;
    border-radius: 4px;
    display: none;
}

.tce-message-success {
    background-color: #dff0d8;
    color: #3c763d;
    border: 1px solid #d6e9c6;
}

.tce-message-error {
    background-color: #f2dede;
    color: #a94442;
    border: 1px solid #ebccd1;
}

/* 邮件列表 */
.tce-emails-list {
    display: grid;
    gap: 15px;
}

.tce-email-item {
    background: #fff;
    padding: 20px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tce-email-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.tce-email-subject {
    margin: 0 0 10px 0;
    color: #0073aa;
    font-size: 18px;
}

.tce-email-meta {
    font-size: 13px;
    color: #666;
    margin-bottom: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.tce-email-preview {
    color: #555;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .tce-tabs {
        flex-direction: column;
    }
    
    .tce-tab {
        border-bottom: 1px solid #eee;
        border-left: 3px solid transparent;
    }
    
    .tce-tab.active {
        border-left-color: #0073aa;
        border-bottom-color: #ddd;
    }
    
    .tce-email-meta {
        flex-direction: column;
        gap: 5px;
    }
}

/* 提示信息 */
.tce-notice {
    background: #f8f9fa;
    border-left: 4px solid #0073aa;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 4px 4px 0;
}

.tce-no-emails {
    text-align: center;
    padding: 40px 20px;
    background: #f9f9f9;
    border-radius: 4px;
    color: #666;
    font-style: italic;
}