/* src/style.css */
:root {
  --bg-color: #0d1117;
  --panel-bg: #161b22;
  --sidebar-width: 300px;
  --output-width: 400px;
  --accent: #58a6ff;
  --border: #30363d;
  --border-hover: #8b949e;
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --primary: #58a6ff;
  --bg-primary: #161b22;
  --bg-secondary: #181818;
  --event-color: #0f0bf5;
  --event-color-light: #2452fb;
  --event-color-dark: #150791;
  --condition-color: #10b98f;
  --condition-color-light: #34d399;
  --condition-color-dark: #059669;
  --condition-group-color: #069ad4;
  --condition-group-color-light: #22d3ee;
  --condition-group-color-dark: #085db2;
  --action-color: #ef4444;
  --action-color-light: #f87171;
  --action-color-dark: #dc2626;
  --action-group-color: #f97316;
  --action-group-color-light: #fb923c;
  --action-group-color-dark: #ea580c;
  --do-color: #9b59b6;
  --do-color-light: #a87bc7;
  --do-color-dark: #8e44ad;
  --node-shadow: 0 4px 20px #00000080;
}

body {
  background: var(--bg-color);
  color: var(--text-primary);
  overflow: hidden;
  margin: 0;
  font-family: Inter, -apple-system, sans-serif;
}

.panel {
  background: var(--panel-bg);
  border-right: 1px solid var(--border);
  display: flex;
  z-index: 10;
  flex-direction: column;
  height: 100vh;
  box-shadow: 0 0 20px #0000004d;
}

.sidebar {
  padding: 0;
}

.output-panel {
  border-right: none;
  border-left: 1px solid var(--border);
}

.output-header-left {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items:  center;
}

.sidebar-header {
  border-bottom: 1px solid var(--border);
  padding: 24px 20px;
}

.sidebar-title {
  letter-spacing: -.02em;
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.sidebar-subtitle {
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin: 4px 0 0;
  font-size: .8rem;
  font-weight: 600;
}

.drag-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
}

.drag-item {
  display: flex;
  border: 1px solid var(--border);
  cursor: grab;
  user-select: none;
  background: #30363d4d;
  border-radius: 10px;
  align-items:  center;
  gap: 12px;
  padding: 12px;
  transition: all .2s cubic-bezier(.4,0,.2,1);
}

.drag-item:hover {
  border-color: var(--accent);
  background: #58a6ff14;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px #0003;
}

.drag-item:active {
  cursor: grabbing;
  transform: scale(.98);
}

.drag-icon {
  display: flex;
  background: var(--bg-color);
  border: 1px solid var(--border);
  border-radius: 8px;
  justify-content: center;
  align-items:  center;
  width: 36px;
  height: 36px;
  font-size: 1.2rem;
}

.drag-icon--event {
  color: var(--event-color);
}

.drag-icon--condition {
  color: var(--condition-color);
}

.drag-icon--condition-group {
  color: var(--condition-group-color);
}

.drag-icon--do {
  color: var(--do-color);
}

.drag-icon--action {
  color: var(--action-color);
}

.drag-icon--action-group {
  color: var(--action-group-color);
}

.drag-info {
  display: flex;
  flex-direction: column;
}

.drag-name {
  color: var(--text-primary);
  font-size: .9rem;
  font-weight: 600;
}

.drag-desc {
  color: var(--text-secondary);
  font-size: .72rem;
}

.sidebar-divider {
  background: var(--border);
  height: 1px;
  margin: 10px 20px;
}

.sidebar-hint {
  border: 1px dashed var(--border);
  background: #21262d99;
  border-radius: 8px;
  margin: 0 16px;
  padding: 16px 20px;
}

.sidebar-hint p {
  color: var(--text-secondary);
  margin: 0;
  font-size: .78rem;
  line-height: 1.6;
}

.sidebar-hint strong {
  color: var(--text-primary);
}

.sidebar-footer {
  display: flex;
  border-top: 1px solid var(--border);
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
  padding: 20px;
}

.version-label {
  text-align: center;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin: 0;
  font-size: .65rem;
}

.output-header {
  border-bottom: 1px solid var(--border);
  display: flex;
  background: #161b2280;
  justify-content: space-between;
  align-items:  center;
  padding: 18px 20px;
}

.output-title {
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: .05em;
  font-size: .9rem;
  font-weight: 700;
}

.output-badge {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .04em;
  background: #58a6ff26;
  border-radius: 99px;
  margin-left: 10px;
  padding: 2px 8px;
  font-size: .65rem;
  font-weight: 600;
}

.output-content {
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-secondary);
  flex: 1;
  margin: 0;
  padding: 16px 18px;
  font-family: Fira Code, Cascadia Code, monospace;
  font-size: 12.5px;
  line-height: 1.7;
}

.output-content--hint {
  color: var(--text-muted);
  font-style: italic;
}

.btn {
  display: inline-flex;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  justify-content: center;
  align-items:  center;
  gap: 6px;
  width: 100%;
  padding: 9px 14px;
  transition: all .2s;
  font-family: inherit;
  font-size: .82rem;
  font-weight: 600;
}

.btn:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-secondary {
  color: var(--text-primary);
  border: 1px solid var(--border);
  background: #30363d;
}

.btn-secondary:hover {
  border-color: var(--border-hover);
  background: #3d444d;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn:disabled {
  opacity: .5;
  cursor: not-allowed;
  filter: grayscale(1);
  transform: none !important;
}

.btn-icon {
  width: auto;
  padding: 6px 12px;
  font-size: .75rem;
}

.btn--success {
  background: var(--condition-color) !important;
}

.drawflow-node {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  box-shadow: var(--node-shadow);
  overflow: visible;
  border-radius: 12px;
  width: 240px;
  transition: border-color .2s, box-shadow .2s;
}

.react-flow__node.selected .drawflow-node {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px #58a6ff4d, var(--node-shadow);
}

.node-title {
  display: flex;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: #fff;
  border-radius: 11px 11px 0 0;
  align-items:  center;
  gap: 8px;
  padding: 10px 14px;
  font-size: .85rem;
  font-weight: 700;
}

.node-title--event {
  background: linear-gradient(135deg, var(--event-color-dark), var(--event-color));
  border-bottom: 2px solid #0003;
  box-shadow: 0 2px 8px #f59e0b4d;
}

.node-title--condition {
  background: linear-gradient(135deg, var(--condition-color-dark), var(--condition-color));
  border-bottom: 2px solid #0003;
  box-shadow: 0 2px 8px #10b9814d;
}

.node-title--action {
  background: linear-gradient(135deg, var(--action-color-dark), var(--action-color));
  border-bottom: 2px solid #0003;
  box-shadow: 0 2px 8px #ef44444d;
}

.node-title--condition-group {
  background: linear-gradient(135deg, var(--condition-group-color-dark), var(--condition-group-color));
  border-bottom: 2px solid #0003;
  box-shadow: 0 2px 8px #8b5cf64d;
}

.node-title--action-group {
  background: linear-gradient(135deg, var(--action-group-color-dark), var(--action-group-color));
  border-bottom: 2px solid #0003;
  box-shadow: 0 2px 8px #8b5cf64d;
}

.node-title--do {
  background: linear-gradient(135deg, var(--do-color-dark), var(--do-color));
  border-bottom: 2px solid #0003;
  box-shadow: 0 2px 8px #9b59b64d;
}

.node-delete {
  color: #fff9;
  display: flex;
  cursor: pointer;
  background: #0003;
  border: none;
  border-radius: 4px;
  justify-content: center;
  align-items:  center;
  width: 24px;
  height: 24px;
  margin-left: auto;
  transition: all .2s;
  font-size: 14px;
}

.node-delete:hover {
  color: #fff;
  background: #cf222e;
}

.node-body {
  border-left: 3px solid #0000;
  padding: 14px;
}

.event .node-body {
  border-left-color: var(--event-color);
  background: linear-gradient(90deg, #f59e0b0d, #0000);
}

.condition .node-body {
  border-left-color: var(--condition-color);
  background: linear-gradient(90deg, #10b9810d, #0000);
}

.condition-group .node-body {
  border-left-color: var(--condition-group-color);
  background: linear-gradient(90deg, #06b6d40d, #0000);
}

.action .node-body {
  border-left-color: var(--action-color);
  background: linear-gradient(90deg, #ef44440d, #0000);
}

.action-group .node-body {
  border-left-color: var(--action-group-color);
  background: linear-gradient(90deg, #f973160d, #0000);
}

.do .node-body {
  border-left-color: var(--do-color);
  background: linear-gradient(90deg, #9b59b60d, #0000);
}

.node-label {
  display: block;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  margin-top: 10px;
  margin-bottom: 6px;
  font-size: .67rem;
  font-weight: 600;
}

.node-label:first-child {
  margin-top: 0;
}

.node-input, input, select, textarea {
  border: 1px solid var(--border);
  color: var(--text-primary);
  box-sizing: border-box;
  outline: none;
  background: #0d1117b3;
  border-radius: 6px;
  width: 100%;
  padding: 7px 10px;
  transition: all .2s;
  font-family: inherit;
  font-size: .78rem;
}

.node-textarea, textarea {
  resize: vertical;
  min-height: 60px;
  font-family: Fira Code, monospace;
  font-size: .72rem;
  line-height: 1.5;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  background: #0d1117e6;
  box-shadow: 0 0 0 2px #58a6ff26;
}

.node-btn {
  display: inline-flex;
  border: 1px solid var(--border);
  cursor: pointer;
  background: var(--panel-bg);
  color: var(--text-primary);
  border-radius: 6px;
  justify-content: center;
  align-items:  center;
  gap: 4px;
  width: auto;
  padding: 6px 10px;
  transition: all .2s;
  font-family: inherit;
  font-size: .75rem;
  font-weight: 500;
}

.node-btn:hover {
  background: var(--border);
  border-color: var(--border-hover);
}

.node-btn:active {
  transform: translateY(0);
}

.node-btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.node-btn--primary:hover {
  filter: brightness(1.1);
  background: var(--accent);
}

.node-btn--secondary {
  background: var(--border);
  color: var(--text-primary);
}

.node-btn--secondary:hover {
  border-color: var(--border-hover);
  background: #3d444d;
}

.node-btn--danger {
  color: var(--action-color);
  background: none;
  border-color: #0000;
  padding: 4px 6px;
}

.node-btn--danger:hover {
  border-color: var(--action-color);
  background: #ef444426;
}

#canvas-hint {
  position: absolute;
  border: 1px solid var(--border-hover);
  color: var(--text-muted);
  white-space: nowrap;
  z-index: 20;
  pointer-events: none;
  backdrop-filter: blur(8px);
  letter-spacing: .02em;
  animation: fadeIn .5s ease-out;
  background: #161b22eb;
  border-radius: 20px;
  padding: 7px 16px;
  font-size: .72rem;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
}

#canvas-hint span {
  color: var(--accent);
  font-weight: 600;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translate(-50%, 10px);
  }

  to {
    opacity: 1;
    transform: translate(-50%);
  }
}

.react-flow__handle {
  border-radius: 50%;
  width: 12px;
  height: 12px;
  transition: all .2s;
}

.react-flow__handle:hover {
  filter: brightness(4);
}

.react-flow__handle.connecting {
  box-shadow: 0 0 10px var(--accent);
  background: var(--accent) !important;
}

.react-flow__handle.valid {
  transform: scale(1.5);
  background: var(--condition-color) !important;
}

.react-flow__handle.invalid {
  transform: scale(1.5);
  background: #cf222e !important;
}

.react-flow__controls {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  box-shadow: var(--node-shadow);
  border-radius: 8px;
}

.react-flow__controls-button {
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  fill: currentColor;
  background: none;
}

.react-flow__controls-button:hover {
  color: var(--text-primary);
  background: #30363d80;
}

.react-flow__attribution {
  opacity: .3;
  background: none;
}

.react-flow__edge-path {
  stroke-width: 2;
  transition: stroke .2s, stroke-width .2s;
}

.react-flow__edge .react-flow__edge-path {
  stroke: #4a5568;
  stroke-opacity: .6;
}

@media (hover: hover) {
  .react-flow__edge:hover .react-flow__edge-path {
    stroke-width: 3;
  }
}

.react-flow__edge.source-event .react-flow__edge-path {
  stroke: var(--event-color);
  stroke-opacity: .5;
}

.react-flow__edge.source-condition .react-flow__edge-path, .react-flow__edge.source-condition-group .react-flow__edge-path {
  stroke: var(--condition-color);
  stroke-opacity: .5;
}

.react-flow__edge.source-action .react-flow__edge-path, .react-flow__edge.source-action-group .react-flow__edge-path {
  stroke: var(--action-color);
  stroke-opacity: .5;
}

.react-flow__edge.selected .react-flow__edge-path {
  stroke: var(--accent);
  stroke-width: 3;
  stroke-opacity: 1;
}

.react-flow__edge.selected {
  z-index: 1000;
}

.react-flow__connection-line {
  stroke: var(--accent);
  stroke-width: 2;
  stroke-dasharray: 5 5;
}

@media (width <= 768px) {
  .react-flow-wrapper {
    flex-direction: column;
  }

  .panel {
    position: fixed;
    height: 100vh;
    top: 0;
    box-shadow: 0 0 30px #0009;
  }

  .sidebar {
    max-width: 85vw;
    left: 0;
  }

  .output-panel {
    max-width: 90vw;
    right: 0;
  }

  .sidebar-toggle, .output-toggle {
    width: 44px;
    height: 44px;
  }

  .drawflow-node {
    width: 260px;
  }

  .react-flow__controls {
    bottom: 20px !important;
    left: 20px !important;
    transform: none !important;
  }

  .panel-backdrop {
    position: fixed;
    backdrop-filter: blur(2px);
    z-index: 9;
    opacity: 0;
    pointer-events: none;
    background: #00000080;
    transition: opacity .3s;
    inset: 0;
  }

  .panel-backdrop.active {
    opacity: 1;
    pointer-events: auto;
  }

  .edge-delete-btn {
    width: 36px !important;
    height: 36px !important;
  }
}

.edge-delete-btn {
  cursor: pointer;
  display: flex;
  color: #fff;
  outline: none;
  background: #cf222e;
  border: none;
  border-radius: 50%;
  justify-content: center;
  align-items:  center;
  width: 28px;
  height: 28px;
  transition: transform .15s, background .15s, box-shadow .15s, outline .15s;
  box-shadow: 0 2px 5px #00000040;
}

.edge-delete-btn:hover {
  outline: 3px solid #f0959573;
  outline-offset: 2px;
  background: #e24b4a;
  transform: scale(1.15);
  box-shadow: 0 3px 8px #00000059;
}

.edge-delete-btn .icon-hover {
  display: none;
}

.edge-delete-btn .icon-default {
  display: flex;
}

.edge-delete-btn:hover .icon-default {
  display: none;
}

.edge-delete-btn:hover .icon-hover {
  display: flex;
}