/* Workflow Designer Styles */

.workflow-designer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 50;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
}

.workflow-designer > div {
    height: 100%;
    background: var(--bg-secondary);
}

/* Node Palette */
.node-palette {
    max-height: calc(100vh - 220px);
    overflow-y: auto;
}

.palette-section {
    margin-bottom: 1.5rem;
}

.palette-node {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: var(--surface-secondary);
    border: 1px solid var(--border-default);
    border-radius: 0.5rem;
    cursor: grab;
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}

.palette-node:hover {
    background: var(--bg-hover);
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.palette-node:active {
    cursor: grabbing;
}

.agent-node {
    border-left: 3px solid #10b981;
}

.mcp-node {
    border-left: 3px solid #3b82f6;
}

.control-node {
    border-left: 3px solid #f59e0b;
}

/* Canvas */
.workflow-canvas {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: calc(100vh - 220px);
    overflow: auto;
    background-color: var(--bg-secondary);
    background-image:
        linear-gradient(var(--border-subtle) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
    background-size: 20px 20px;
    border-radius: 0.5rem;
    z-index: 1;
}

/* SVG Layers */
.connections-layer,
.temp-connection-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.connections-layer path {
    pointer-events: stroke;
}

/* Workflow Node */
.workflow-node {
    position: absolute;
    background: var(--surface-secondary);
    border: 3px solid var(--color-accent);
    border-radius: 0.5rem;
    cursor: move;
    transition: all 0.2s;
    box-shadow: var(--shadow-md);
    min-width: 180px;
    padding: 0.75rem;
    user-select: none;
    z-index: 5;
}

.workflow-node:hover {
    border-color: var(--color-accent-hover);
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.workflow-node.selected {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle),
                var(--shadow-lg);
    z-index: 20;
}

.workflow-node.agent-node {
    border-left: 4px solid #10b981;
}

.workflow-node.mcp_tool-node {
    border-left: 4px solid #3b82f6;
}

.workflow-node.conditional-node {
    border-left: 4px solid #f59e0b;
}

.workflow-node.loop-node {
    border-left: 4px solid #8b5cf6;
}

.workflow-node.retry-node {
    border-left: 4px solid #ef4444;
}

/* Node Header */
.node-header {
    padding: 0.5rem;
    border-bottom: 1px solid rgba(75, 85, 99, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.node-type-badge {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    color: #10b981;
    background: rgba(16, 185, 129, 0.1);
    padding: 0.15rem 0.4rem;
    border-radius: 0.25rem;
}

.node-delete {
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9ca3af;
    background: transparent;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    transition: all 0.2s;
}

.node-delete:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

/* Node Content */
.node-content {
    padding: 0.75rem;
}

.node-title {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.node-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Connection Points */
.connection-point {
    position: absolute;
    width: 12px;
    height: 12px;
    background: #10b981;
    border: 2px solid #1f2937;
    border-radius: 50%;
    cursor: crosshair;
    z-index: 10;
    transition: all 0.2s;
}

.connection-point:hover {
    width: 16px;
    height: 16px;
    background: #34d399;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.3);
}

.input-point {
    top: 50%;
    left: -6px;
    transform: translateY(-50%);
}

.output-point {
    top: 50%;
    right: -6px;
    transform: translateY(-50%);
}

/* Workflow Edge */
.workflow-edge {
    fill: none;
    stroke: #10b981;
    stroke-width: 2;
    transition: all 0.2s;
}

.workflow-edge:hover {
    stroke: #34d399;
    stroke-width: 3;
}

.workflow-edge.selected {
    stroke: #34d399;
    stroke-width: 3;
    filter: drop-shadow(0 0 4px rgba(16, 185, 129, 0.6));
}

.workflow-edge.error {
    stroke: #ef4444;
    stroke-width: 3;
    stroke-dasharray: 8, 4;
    animation: dash 1s linear infinite;
}

@keyframes dash {
    to {
        stroke-dashoffset: -12;
    }
}

/* Properties Panel */
.properties-panel {
    max-height: calc(100vh - 280px);
}

.input-field {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--surface-primary);
    border: 1px solid var(--border-default);
    border-radius: 0.375rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.2s;
}

.input-field:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

textarea.input-field {
    resize: vertical;
    min-height: 80px;
}

/* Buttons */
.btn-primary {
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    transform: translateY(-1px);
}

.btn-secondary {
    padding: 0.5rem 1rem;
    background: var(--surface-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--color-accent);
}

.btn-danger {
    padding: 0.5rem 1rem;
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.3);
    border-color: rgba(239, 68, 68, 0.5);
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.status-indicator {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Scrollbar Styling */
.node-palette::-webkit-scrollbar,
.properties-panel::-webkit-scrollbar {
    width: 6px;
}

.node-palette::-webkit-scrollbar-track,
.properties-panel::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.node-palette::-webkit-scrollbar-thumb,
.properties-panel::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 3px;
}

.node-palette::-webkit-scrollbar-thumb:hover,
.properties-panel::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Responsive */
@media (max-width: 1024px) {
    .workflow-designer {
        flex-direction: column;
    }

    .node-palette,
    .properties-panel {
        width: 100%;
        max-height: 300px;
        margin: 0 0 1rem 0;
    }
}

/* ============================================================================
   Workflow Designer Draggable (HTML5 Native Drag & Drop)
   ============================================================================ */

.workflow-designer-draggable {
    display: flex;
    gap: 20px;
    padding: 20px;
}

/* Success Banner */
.success-banner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);  /* ✅ Center both horizontally and vertically */
    background: linear-gradient(135deg, #4ade80 0%, #10b981 100%);
    color: white;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: bold;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    z-index: 1000;
}

/* Palette */
.workflow-designer-draggable .palette {
    width: 250px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 20px;
    flex-shrink: 0;
    backdrop-filter: var(--glass-blur);
}

.workflow-designer-draggable .palette-node {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 12px;
    margin-bottom: 10px;
    border-radius: 6px;
    cursor: grab;
    user-select: none;
    transition: transform 0.2s;
    opacity: 1;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.workflow-designer-draggable .palette-node:hover {
    transform: translateX(5px);
}

.workflow-designer-draggable .palette-node:active {
    cursor: grabbing;
}

.workflow-designer-draggable .stats {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.85em;
    opacity: 0.7;
}

/* Canvas Container */
.workflow-designer-draggable .canvas-container {
    flex: 1;
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.workflow-designer-draggable .toolbar {
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}

.workflow-designer-draggable .btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: opacity 0.2s;
}

.workflow-designer-draggable .btn:hover {
    opacity: 0.9;
}

.workflow-designer-draggable .btn-primary {
    background: linear-gradient(135deg, #4ade80 0%, #10b981 100%);
}

.workflow-designer-draggable .btn-secondary {
    background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
}

/* Workflow Canvas */
.workflow-designer-draggable .workflow-canvas {
    width: 100%;
    height: 100%;
    position: relative;
    flex: 1;
}

/* SVG Connections Layer */
.workflow-designer-draggable .connections-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;  /* ⬆️ Changed from 1 to 5 to show connections BELOW nodes (z-index: 10) but ABOVE canvas */
    pointer-events: none;
    overflow: visible;  /* ✅ Ensure SVG paths outside viewBox are visible */
}

/* Workflow Nodes */
.workflow-designer-draggable .workflow-node {
    position: absolute;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: 2px solid #4ade80;
    border-radius: 8px;
    padding: 15px 20px;
    cursor: move;
    user-select: none;
    width: 150px;  /* ✅ 명시적 너비 설정 (JavaScript NODE_WIDTH와 일치) */
    height: 80px;  /* ✅ 명시적 높이 설정 (JavaScript NODE_HEIGHT와 일치) */
    box-sizing: border-box;  /* ✅ padding과 border를 포함한 전체 크기 */
    z-index: 10;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    justify-content: center;  /* ✅ 내용을 세로 중앙 정렬 */
}

.workflow-designer-draggable .workflow-node.dragging {
    opacity: 0.7;
    z-index: 100;
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.5);
}

.workflow-designer-draggable .workflow-node.agent-node {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.workflow-designer-draggable .workflow-node.mcp_tool-node {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.workflow-designer-draggable .workflow-node.default-node {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.workflow-designer-draggable .node-header {
    font-weight: bold;
    margin-bottom: 5px;
}

.workflow-designer-draggable .node-body {
    font-size: 0.85em;
    opacity: 0.9;
}

/* Node Connection Handles */
.workflow-designer-draggable .node-handle {
    width: 12px;
    height: 12px;
    background: #4ade80;
    border-radius: 50%;
    position: absolute;
    cursor: crosshair;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.2s;
}

.workflow-designer-draggable .node-handle:hover {
    transform: scale(1.3);
    box-shadow: 0 0 8px rgba(74, 222, 128, 0.6);
}

.workflow-designer-draggable .handle-output {
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
}

.workflow-designer-draggable .handle-input {
    left: -6px;
    top: 50%;
    transform: translateY(-50%);
}

/* Transitions */
.fade-enter-active, .fade-leave-active {
    transition: opacity 0.3s;
}

.fade-enter-from, .fade-leave-to {
    opacity: 0;
}