/* =====================
   CONTENT AREA
   ===================== */
#tabContents {
    width: 100%;
    height: 100%;
}

.tab-content {
    display: none;
    width: 100%;
    height: 100%;
}

.tab-content.active {
    display: flex;
    flex-direction: row;
}

/* =====================
   PREVIEW CONTAINER - Full Width
   ===================== */
.preview-container {
    width: 100%;
    height: 100%;
    background: #fff;
    display: flex;
    flex-direction: column;
}

/* Preview ẩn khi edit mode */
.tab-content.edit-mode .preview-container {
    display: none;
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: #fff;
}

/* =====================
   EMPTY STATE
   ===================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: #cccccc;
    text-align: center;
    padding: 40px;
}

.empty-state .icon {
    font-size: 64px;
    opacity: 0.3;
    margin-bottom: 16px;
}

.empty-state h2 {
    font-size: 20px;
    margin-bottom: 8px;
    font-weight: 500;
}

.empty-state p {
    font-size: 14px;
    opacity: 0.7;
    margin-top: 4px;
}