.fi-side-preview {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--side-preview-width, 42%);
    height: 100vh;
    z-index: 38;
    display: flex;
    flex-direction: column;
    background: var(--gray-50);
    border-left: 1px solid var(--gray-200);
    box-shadow: -4px 0 12px rgba(0, 0, 0, 0.08);
}

:is(.dark) .fi-side-preview {
    background: var(--gray-900);
    border-color: var(--gray-700);
    box-shadow: -4px 0 12px rgba(0, 0, 0, 0.3);
}

body.side-preview-open .fi-main-ctn {
    margin-right: var(--side-preview-width, 42%);
    transition: margin-right 0.2s ease;
}

body:not(.side-preview-open) .fi-main-ctn {
    transition: margin-right 0.2s ease;
}

.fi-side-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--gray-200);
    background: var(--color-white);
    min-height: 2.75rem;
    gap: 0.5rem;
    flex-shrink: 0;
}

:is(.dark) .fi-side-preview-header {
    background: var(--gray-800);
    border-color: var(--gray-700);
}

.fi-side-preview-header-left {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    min-width: 0;
    flex: 1;
}

.fi-side-preview-header-right {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-shrink: 0;
}

.fi-side-preview-title {
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--gray-900);
    white-space: nowrap;
}

:is(.dark) .fi-side-preview-title {
    color: var(--gray-100);
}

.fi-side-preview-select {
    font-size: 0.75rem;
    padding: 0.2rem 1.5rem 0.2rem 0.4rem;
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    background: var(--color-white);
    color: var(--gray-700);
    min-width: 0;
    max-width: 10rem;
    appearance: auto;
}

:is(.dark) .fi-side-preview-select {
    background: var(--gray-700);
    border-color: var(--gray-600);
    color: var(--gray-200);
}

.fi-side-preview-auto-label {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.6875rem;
    color: var(--gray-500);
    cursor: pointer;
    white-space: nowrap;
    user-select: none;
}

.fi-side-preview-checkbox {
    width: 0.875rem;
    height: 0.875rem;
    cursor: pointer;
    accent-color: var(--primary-500);
}

.fi-side-preview-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 0.375rem;
    color: var(--gray-400);
    transition: all 0.15s;
}

.fi-side-preview-btn:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

:is(.dark) .fi-side-preview-btn:hover {
    background: var(--gray-700);
    color: var(--gray-200);
}

.fi-side-preview-icon {
    width: 1rem;
    height: 1rem;
}

.fi-side-preview-body {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.fi-side-preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: var(--color-white);
}

.fi-side-preview-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 0.75rem;
    color: var(--gray-400);
    font-size: 0.8125rem;
}

.fi-side-preview-spinner {
    width: 2rem;
    height: 2rem;
}

.fi-side-preview-empty-icon {
    width: 2.5rem;
    height: 2.5rem;
    opacity: 0.4;
}

.fi-side-preview-resizer {
    position: absolute;
    top: 0;
    left: -4px;
    width: 8px;
    height: 100%;
    cursor: ew-resize;
    z-index: 10;
}

.fi-side-preview-resizer:hover,
body.side-preview-resizing .fi-side-preview-resizer {
    background: var(--primary-500);
    opacity: 0.3;
}

body.side-preview-resizing {
    cursor: ew-resize !important;
    user-select: none !important;
}

body.side-preview-resizing iframe {
    pointer-events: none !important;
}

@media (max-width: 1024px) {
    .fi-side-preview {
        width: 100% !important;
    }

    body.side-preview-open .fi-main-ctn {
        margin-right: 0;
    }
}

.fi-fullscreen-preview-overlay {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    flex-direction: column;
    background: var(--gray-50);
}

:is(.dark) .fi-fullscreen-preview-overlay {
    background: var(--gray-900);
}

.fi-fullscreen-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--gray-200);
    background: var(--color-white);
    min-height: 2.75rem;
    gap: 0.5rem;
    flex-shrink: 0;
}

:is(.dark) .fi-fullscreen-preview-header {
    background: var(--gray-800);
    border-color: var(--gray-700);
}

.fi-fullscreen-preview-header-left {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.fi-fullscreen-preview-header-right {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.fi-fullscreen-preview-body {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.fi-fullscreen-preview-header-center {
    display: flex;
    align-items: center;
    gap: 0.125rem;
    background: var(--gray-100);
    border-radius: 0.5rem;
    padding: 0.125rem;
}

:is(.dark) .fi-fullscreen-preview-header-center {
    background: var(--gray-700);
}

.fi-viewport-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    border: none;
    background: transparent;
    color: var(--gray-500);
    cursor: pointer;
    transition: all 150ms ease;
}

.fi-viewport-btn:hover {
    color: var(--gray-700);
    background: var(--gray-200);
}

:is(.dark) .fi-viewport-btn:hover {
    color: var(--gray-300);
    background: var(--gray-600);
}

.fi-viewport-btn-active {
    background: var(--color-white);
    color: var(--primary-600);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

:is(.dark) .fi-viewport-btn-active {
    background: var(--gray-800);
    color: var(--primary-400);
}

.fi-viewport-btn-active:hover {
    background: var(--color-white);
    color: var(--primary-600);
}

:is(.dark) .fi-viewport-btn-active:hover {
    background: var(--gray-800);
    color: var(--primary-400);
}

.fi-viewport-frame {
    width: 100%;
    height: 100%;
    transition: all 300ms ease;
}

.fi-fullscreen-preview-body.fi-viewport-tablet,
.fi-fullscreen-preview-body.fi-viewport-mobile {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--gray-100);
}

:is(.dark) .fi-fullscreen-preview-body.fi-viewport-tablet,
:is(.dark) .fi-fullscreen-preview-body.fi-viewport-mobile {
    background: var(--gray-950);
}

.fi-viewport-frame-tablet {
    width: 768px;
    max-width: 100%;
    height: 100%;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

.fi-viewport-frame-mobile {
    width: 375px;
    max-width: 100%;
    height: 100%;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

.fi-fullscreen-preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: var(--color-white);
}