/* Preview tabs and webpage preview canvas. */



.preview-tabs {
    display: flex;
    flex: 1 1 auto;
    min-width: 0;
    gap: 3px;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--line) transparent;
}

.preview-tab {
    appearance: none;
    flex: 0 0 auto;
    border: 1px solid var(--line);
    border-bottom-color: var(--line);
    border-radius: 8px 8px 0 0;
    padding: 8px 13px 7px;
    background: #e9e8e2;
    color: var(--muted);
    cursor: pointer;
}

.preview-tab:hover {
    border-color: #a9b8aa;
    background: #f2f4ef;
    color: var(--accent);
}

.preview-tab:focus-visible {
    position: relative;
    z-index: 2;
    outline: 3px solid rgba(36, 92, 55, 0.3);
    outline-offset: -3px;
}

.preview-tab.is-active {
    border-color: var(--accent);
    border-top-width: 3px;
    border-bottom-color: var(--surface);
    padding-top: 6px;
    background: var(--surface);
    color: var(--accent);
    font-weight: 700;
}

.preview-canvas {
    min-height: calc(100vh - 24px);
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    font-family: Arial, sans-serif;
    font-size: 0.90rem;
}

.preview-header:not([hidden]) + .preview-canvas {
    min-height: calc(100vh - 68px);
    border-top-left-radius: 0;
}

.preview-canvas #checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
    margin-top: 10px;
    margin-bottom: 36px;
}

.preview-canvas #checkbox-group label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-right: 0;
}

.preview-canvas #checkbox-group input {
    margin: 0;
}

.preview-canvas #message-group {
    margin-top: 22px;
    margin-bottom: 24px;
}

.preview-canvas #message {
    margin-top: 0;
    margin-bottom: 16px;
}

.preview-canvas h1,
.preview-canvas h2,
.preview-canvas p,
.preview-canvas ul {
    margin-top: 0;
}

.preview-canvas h3 {
    margin-bottom: 8px;
}

.preview-canvas img {
    display: block;
}

.preview-canvas ul + ul {
    margin-top: 10px;
}

.preview-focus-target {
    outline: 2px dashed #9ab89e;
    outline-offset: 4px;
}