/* ── Editor container ── */
#editor-container {
    width: 100%;
    height: 70vh;
    margin-top: 16px;
    border-radius: 8px;
    border: 1px solid var(--panel-border);
    overflow: hidden;
    position: relative;
}

/* ── 3-column layout ── */
.ne-editor {
    width: 100%;
    height: 100%;
    display: flex;
    overflow: hidden;
    user-select: none;
}

.ne-panel {
    flex-shrink: 0;
    width: 0;
    overflow: hidden;
    transition: width 0.2s ease;
    background: rgba(22, 33, 62, 0.95);
    border-color: var(--panel-border);
}

.ne-panel-left {
    border-right: 1px solid var(--panel-border);
}

.ne-panel-right {
    border-left: 1px solid var(--panel-border);
}

.ne-panel-right.ne-panel-open {
    width: 240px;
}

/* ── Canvas (center) ── */
.ne-canvas {
    flex: 1;
    position: relative;
    overflow: hidden;
    cursor: grab;
    background-image:
        radial-gradient(circle, var(--ne-grid-dot, rgba(255,255,255,0.03)) 1px, transparent 1px);
    background-size: 20px 20px;
    background-color: var(--ne-bg, #111);
    transition: background-color 0.25s;
}

.ne-viewport {
    position: absolute;
    transform-origin: 0 0;
    will-change: transform;
}

.ne-svg {
    position: absolute;
    width: 10000px;
    height: 10000px;
    pointer-events: none;
    overflow: visible;
}

.ne-svg .ne-connection {
    pointer-events: stroke;
    stroke-width: 2;
    cursor: pointer;
}

.ne-svg .ne-connection:hover {
    stroke: var(--error);
    stroke-width: 3;
}

.ne-nodes-layer {
    position: absolute;
}

/* ── Node ── */
.ne-node {
    position: absolute;
    min-width: 140px;
    background: var(--ne-node-body, var(--panel));
    border: 1px solid var(--ne-node-border, var(--panel-border));
    border-radius: 8px;
    cursor: grab;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
    transition: box-shadow 0.15s, background 0.25s, border-color 0.25s;
}

.ne-node:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.6);
}

.ne-node-selected {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 2px var(--primary), 0 4px 16px rgba(0,0,0,0.6);
}

.ne-node-header {
    padding: 6px 10px;
    font-size: 0.8em;
    font-weight: 600;
    color: #fff;
    background: #335;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.ne-node-body {
    padding: 6px 0;
    display: flex;
    justify-content: space-between;
    gap: 4px;
}

.ne-node-inputs,
.ne-node-outputs {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ne-node-outputs {
    align-items: flex-end;
}

/* ── Port ── */
.ne-port {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 2px 8px;
}

.ne-port-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    cursor: crosshair;
    border: 1.5px solid var(--ne-port-stroke, rgba(255,255,255,0.3));
    transition: transform 0.1s, border-color 0.25s;
}

.ne-port-dot:hover {
    transform: scale(1.4);
    border-color: #fff;
}

.ne-port-label {
    font-size: 0.7em;
    color: var(--ne-port-label, var(--text-muted));
    white-space: nowrap;
    transition: color 0.25s;
    cursor: ns-resize;
}

.ne-port-dragging {
    background: rgba(0, 212, 255, 0.15);
    border-radius: 3px;
}

.ne-port-dragging .ne-port-label {
    color: var(--primary);
}

/* ── Toolbar ── */
#toolbar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

#toolbar button {
    padding: 6px 14px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85em;
    transition: background 0.15s;
}

#toolbar button:hover {
    background: var(--primary);
    color: #000;
}

/* ── Overlay action buttons (on canvas) ── */
.ne-overlay-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 6px;
    z-index: 10;
}

.ne-overlay-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(22, 33, 62, 0.85);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    backdrop-filter: blur(4px);
    transition: background 0.15s, color 0.15s;
    padding: 0;
}

.ne-overlay-btn:hover {
    background: rgba(22, 33, 62, 1);
    color: var(--primary);
    border-color: var(--primary);
}

.ne-overlay-btn-flash {
    background: rgba(0, 212, 255, 0.25) !important;
    color: var(--primary) !important;
}

.ne-overlay-select {
    height: 32px;
    padding: 0 8px;
    background: rgba(22, 33, 62, 0.85);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 0.75em;
    cursor: pointer;
    backdrop-filter: blur(4px);
    outline: none;
}

.ne-overlay-select:hover {
    border-color: var(--primary);
    color: var(--text);
}

/* ── Property panel (inside right panel) ── */
.ne-property-panel {
    width: 100%;
    font-size: 0.8em;
    color: inherit;
}

.ne-pp-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    border-bottom: 1px solid var(--panel-border);
}

.ne-pp-title {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.95em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ne-pp-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2em;
    cursor: pointer;
    padding: 0 2px;
    line-height: 1;
}

.ne-pp-close:hover {
    color: var(--error);
}

.ne-pp-content {
    padding: 6px 0;
}

.ne-pp-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 4px 12px;
    gap: 8px;
}

.ne-pp-row:hover {
    background: rgba(255, 255, 255, 0.03);
}

.ne-pp-key {
    color: var(--text-muted);
    flex-shrink: 0;
    font-size: 0.9em;
}

.ne-pp-value {
    color: inherit;
    text-align: right;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: 'Cascadia Code', monospace;
    font-size: 0.9em;
}

/* ── Editable inputs ── */
.ne-pp-input {
    flex: 1;
    min-width: 0;
    padding: 2px 6px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--panel-border);
    border-radius: 3px;
    color: inherit;
    font-family: 'Cascadia Code', monospace;
    font-size: 0.9em;
    outline: none;
}

.ne-pp-input:focus {
    border-color: var(--primary);
}

.ne-pp-input-checkbox {
    accent-color: var(--primary);
}

/* ── Footer (Apply / Reset) ── */
.ne-pp-footer {
    display: flex;
    gap: 6px;
    padding: 8px 12px;
    border-top: 1px solid var(--panel-border);
}

.ne-pp-btn {
    flex: 1;
    padding: 4px 0;
    border: 1px solid var(--panel-border);
    border-radius: 4px;
    font-size: 0.85em;
    cursor: pointer;
    text-align: center;
}

.ne-pp-btn-apply {
    background: var(--primary);
    color: #000;
    border-color: var(--primary);
    font-weight: 600;
}

.ne-pp-btn-apply:hover:not(.ne-pp-btn-disabled) {
    filter: brightness(1.1);
}

.ne-pp-btn-reset {
    background: transparent;
    color: var(--text-muted);
}

.ne-pp-btn-reset:hover:not(.ne-pp-btn-disabled) {
    color: var(--text);
    border-color: var(--text-muted);
}

.ne-pp-btn-disabled {
    opacity: 0.3;
    cursor: default;
    pointer-events: none;
}

/* ── Save/Load overlay separator ── */
.ne-overlay-sep {
    width: 1px;
    height: 24px;
    background: var(--panel-border);
    align-self: center;
}

/* ── Selection rectangle ── */
.ne-selection-rect {
    position: absolute;
    border: 1.5px dashed var(--primary);
    background: rgba(0, 212, 255, 0.08);
    pointer-events: none;
    z-index: 5;
}