/* NOTE: Form Builder — fullscreen layout (sidebar + canvas) */

.mw-fb-fullscreen {
    display: flex;
    height: calc(100dvh - 48px);
    overflow: hidden;
}

/* NOTE: Left sidebar */
.mw-fb-sidebar {
    width: 260px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--mud-palette-lines-default);
    background: var(--mud-palette-surface);
}

.mw-fb-sb-header {
    padding: 8px 12px;
    border-bottom: 1px solid var(--mud-palette-lines-default);
    flex-shrink: 0;
}

.mw-fb-sb-scroll {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

/* NOTE: Main editor area */
.mw-fb-page-area {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    background: var(--mud-palette-background-grey);
    padding: 24px;
    position: relative;
}

/* NOTE: WYSIWYG Canvas */

.mw-fb-canvas {
    background: var(--mud-palette-surface);
    border-radius: 8px;
    padding: 16px;
    min-height: 300px;
    position: relative;
}

/* NOTE: 12-column grid overlay (visible during drag) */
.mw-fb-canvas.dragging .mw-fb-grid-overlay {
    opacity: 1;
}
.mw-fb-grid-overlay {
    position: absolute;
    inset: 16px;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transition: opacity 150ms;
}
.mw-fb-grid-col {
    border-left: 1px dashed rgba(128, 128, 128, 0.15);
}
.mw-fb-grid-col:last-child {
    border-right: 1px dashed rgba(128, 128, 128, 0.15);
}

/* NOTE: Form element wrapper */
.mw-fb-el {
    position: relative;
    border-radius: 4px;
    border: 1.5px solid transparent;
    transition: border-color 150ms, box-shadow 150ms;
    cursor: default;
    min-height: 32px;
}

/* NOTE: Hover — show overlay */
.mw-fb-el:hover {
    border-color: var(--mud-palette-lines-default);
}
.mw-fb-el:hover .mw-fb-overlay {
    opacity: 1;
}

/* NOTE: Selected */
.mw-fb-el.selected {
    border-color: var(--mud-palette-primary);
    box-shadow: 0 0 0 1px var(--mud-palette-primary);
}

/* NOTE: Dragging source */
.mw-fb-el.drag-source {
    opacity: 0.3;
    border: 1.5px dashed var(--mud-palette-primary);
}

/* NOTE: Overlay with handle + actions */
.mw-fb-overlay {
    position: absolute;
    top: -1px;
    right: -1px;
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 2px 4px;
    background: var(--mud-palette-surface);
    border: 1px solid var(--mud-palette-lines-default);
    border-radius: 0 4px 0 4px;
    opacity: 0;
    transition: opacity 100ms;
    z-index: 5;
    font-size: 12px;
    color: var(--mud-palette-text-secondary);
}
.mw-fb-overlay button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    border-radius: 4px;
    color: inherit;
    cursor: pointer;
    padding: 0;
}
.mw-fb-overlay button:hover {
    background: var(--mud-palette-action-default-hover);
    color: var(--mud-palette-text-primary);
}
.mw-fb-overlay .drag-grip {
    cursor: grab;
}
.mw-fb-overlay .drag-grip:active {
    cursor: grabbing;
}
.mw-fb-overlay .el-type {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding: 0 4px;
    opacity: 0.6;
    user-select: none;
}

/* NOTE: Resize handles */
.mw-fb-resize {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 6px;
    cursor: col-resize;
    z-index: 5;
    opacity: 0;
    transition: opacity 100ms;
}
.mw-fb-el:hover .mw-fb-resize,
.mw-fb-el.selected .mw-fb-resize {
    opacity: 1;
}
.mw-fb-resize::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 28px;
    background: var(--mud-palette-primary);
    border-radius: 2px;
    opacity: 0.5;
}
.mw-fb-resize:hover::after {
    height: 40px;
    opacity: 1;
}
.mw-fb-resize.left { left: -4px; }
.mw-fb-resize.left::after { left: 0; }
.mw-fb-resize.right { right: -4px; }
.mw-fb-resize.right::after { right: 0; }

/* NOTE: Drop insertion indicator */
.mw-fb-drop-indicator {
    grid-column: span 12;
    height: 3px;
    background: var(--mud-palette-primary);
    border-radius: 2px;
    position: relative;
    pointer-events: none;
}
.mw-fb-drop-indicator::before,
.mw-fb-drop-indicator::after {
    content: '';
    position: absolute;
    top: -3px;
    width: 9px;
    height: 9px;
    background: var(--mud-palette-primary);
    border-radius: 50%;
}
.mw-fb-drop-indicator::before { left: -4px; }
.mw-fb-drop-indicator::after { right: -4px; }

/* NOTE: Empty canvas placeholder */
.mw-fb-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 48px;
    color: var(--mud-palette-text-disabled);
    font-size: 14px;
    border: 2px dashed var(--mud-palette-lines-default);
    border-radius: 8px;
    grid-column: span 12;
}

/* NOTE: Group container in editor */
.mw-fb-group {
    grid-column: span 12;
    border: 2px solid var(--mud-palette-lines-default);
    border-radius: 8px;
    padding: 16px 12px 12px;
    position: relative;
    min-height: 60px;
}
.mw-fb-group-label {
    position: absolute;
    top: -10px;
    left: 12px;
    background: var(--mud-palette-surface);
    padding: 0 8px;
    font-size: 13px;
    font-weight: 500;
}

/* NOTE: Width snap tooltip during resize */
.mw-fb-snap-tooltip {
    position: fixed;
    background: var(--mud-palette-primary);
    color: white;
    font-size: 11px;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 4px;
    pointer-events: none;
    z-index: 100;
    white-space: nowrap;
    transform: translate(-50%, -100%);
    margin-top: -8px;
}

/* NOTE: Multi-select floating action bar */
.mw-fb-multi-bar {
    position: sticky;
    bottom: 16px;
    margin: 16px auto 0;
    width: fit-content;
    padding: 6px 12px;
    border-radius: 8px;
    z-index: 20;
}

/* NOTE: Multi-selected element */
.mw-fb-el.multi-selected {
    border-color: rgba(var(--mud-palette-primary-rgb), 0.3);
    background: rgba(var(--mud-palette-primary-rgb), 0.05);
}

/* NOTE: Palette items in sidebar (sequence editor pattern) */
.mw-fb-palette-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    cursor: grab;
    user-select: none;
    border-radius: 4px;
    transition: background 0.12s ease;
    font-size: 13px;
}
.mw-fb-palette-item:hover {
    background: var(--mud-palette-action-default-hover);
}
.mw-fb-palette-item:active {
    cursor: grabbing;
}
.mw-fb-palette-item .mw-fb-palette-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* NOTE: Info + add buttons — hidden until hover */
.mw-fb-palette-item .mw-fb-palette-btn {
    opacity: 0;
    transition: opacity 0.12s;
    padding: 2px !important;
    min-width: 0 !important;
    width: 22px !important;
    height: 22px !important;
}
.mw-fb-palette-item:hover .mw-fb-palette-btn {
    opacity: 0.6;
}
.mw-fb-palette-item .mw-fb-palette-btn:hover {
    opacity: 1 !important;
}

/* NOTE: Ghost element during drag */
.mw-fb-ghost {
    position: fixed;
    padding: 6px 14px;
    background: var(--mud-palette-surface, #1e1e1e);
    border: 1px solid var(--mud-palette-lines-default);
    border-radius: 4px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    font-size: 12px;
    font-weight: 500;
    color: var(--mud-palette-text-primary);
    pointer-events: none;
    z-index: 1400;
    white-space: nowrap;
}

/* NOTE: Drop indicator line (positioned by JS) */
.mw-fb-drop-line {
    position: fixed;
    background: var(--mud-palette-primary);
    border-radius: 2px;
    pointer-events: none;
    z-index: 1300;
}
.mw-fb-drop-line::before,
.mw-fb-drop-line::after {
    content: '';
    position: absolute;
    width: 9px;
    height: 9px;
    background: var(--mud-palette-primary);
    border-radius: 50%;
}
/* NOTE: Dot position depends on orientation — horizontal line: dots at left/right */
.mw-fb-drop-line[style*="width: 3px"] {
    /* Vertical line (beside mode) — dots at top/bottom */
}
.mw-fb-drop-line::before { left: -3px; top: -3px; }
.mw-fb-drop-line::after { right: -3px; bottom: -3px; }

/* NOTE: Info popover */
.mw-fb-info-popover {
    padding: 12px 16px;
    max-width: 280px;
    font-size: 13px;
    line-height: 1.5;
}