/* ==========================================================================
   Flow Builder — node, connection, and canvas styles
   Complements Tailwind utility classes used in the LiveView template.
   ========================================================================== */

/* ---------------------------------------------------------------------------
   Canvas container
   --------------------------------------------------------------------------- */

.flow-canvas {
  position: relative;
  min-width: 2400px;
  min-height: 1800px;
  background-color: #F8FAFC;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.2) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ---------------------------------------------------------------------------
   Flow nodes — base
   --------------------------------------------------------------------------- */

.flow-node {
  position: absolute;
  min-width: 160px;
  max-width: 220px;
  border-radius: 8px;
  border: 2px solid #CBD5E1;
  background: #FFFFFF;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  cursor: move;
  user-select: none;
  transition: box-shadow 0.15s, border-color 0.15s;
  font-size: 13px;
  z-index: 10;
}

.flow-node:hover {
  box-shadow: 0 4px 6px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
}

.flow-node--selected {
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.4);
  border-color: #6366F1;
}

/* ---------------------------------------------------------------------------
   Node header + body
   --------------------------------------------------------------------------- */

.flow-node__header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px 6px;
  border-radius: 6px 6px 0 0;
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.flow-node__icon {
  font-size: 14px;
  flex-shrink: 0;
}

.flow-node__title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.flow-node__body {
  padding: 6px 10px 8px;
  color: #64748B;
  font-size: 12px;
  min-height: 20px;
}

/* ---------------------------------------------------------------------------
   Node type colours
   --------------------------------------------------------------------------- */

.flow-node--request {
  border-color: #3B82F6;
}
.flow-node--request .flow-node__header {
  background-color: #EFF6FF;
  color: #1D4ED8;
}

.flow-node--slot {
  border-color: #A855F7;
}
.flow-node--slot .flow-node__header {
  background-color: #FAF5FF;
  color: #7E22CE;
}

.flow-node--adapter {
  border-color: #22C55E;
}
.flow-node--adapter .flow-node__header {
  background-color: #F0FDF4;
  color: #15803D;
}

.flow-node--decision {
  border-color: #EAB308;
  opacity: 0.65;  /* Phase 8: decision nodes are "coming soon" */
}
.flow-node--decision .flow-node__header {
  background-color: #FEFCE8;
  color: #854D0E;
}

.flow-node--transform {
  border-color: #F97316;
}
.flow-node--transform .flow-node__header {
  background-color: #FFF7ED;
  color: #C2410C;
}

.flow-node--merge {
  border-color: #14B8A6;
}
.flow-node--merge .flow-node__header {
  background-color: #F0FDFA;
  color: #0F766E;
}

.flow-node--response {
  border-color: #94A3B8;
}
.flow-node--response .flow-node__header {
  background-color: #F8FAFC;
  color: #475569;
}

/* ---------------------------------------------------------------------------
   Execution overlay states
   --------------------------------------------------------------------------- */

.flow-node--active {
  animation: flow-node-pulse 1.2s ease-in-out infinite;
  border-color: #6366F1;
}

.flow-node--ok {
  border-color: #22C55E;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.25);
}

.flow-node--fallback {
  border-color: #F97316;
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.25);
}

.flow-node--failed {
  border-color: #EF4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.25);
}

.flow-node--skipped {
  border-color: #CBD5E1;
  border-style: dashed;
  opacity: 0.55;
  filter: grayscale(0.6);
}

.flow-node--error {
  border-color: #EF4444;
  animation: flow-node-shake 0.3s ease-in-out;
}

@keyframes flow-node-pulse {
  0%, 100% { box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.3); }
  50%       { box-shadow: 0 0 0 6px rgba(99, 102, 241, 0.1); }
}

@keyframes flow-node-shake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-4px); }
  75%       { transform: translateX(4px); }
}

/* ---------------------------------------------------------------------------
   Execution overlay badge (duration / fallback reason)
   --------------------------------------------------------------------------- */

.flow-node__overlay-badge {
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.85);
  color: #F1F5F9;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 10px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 20;
}

/* ---------------------------------------------------------------------------
   Node palette (left sidebar)
   --------------------------------------------------------------------------- */

.flow-palette {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 10px;
}

.flow-palette__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1.5px solid #E2E8F0;
  background: #FFFFFF;
  cursor: grab;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.1s, border-color 0.1s;
}

.flow-palette__item:hover {
  background: #F1F5F9;
  border-color: #94A3B8;
}

.flow-palette__item:active {
  cursor: grabbing;
}

.flow-palette__item--disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ---------------------------------------------------------------------------
   Property panel (right sidebar)
   --------------------------------------------------------------------------- */

.flow-property-panel {
  font-size: 13px;
}

.flow-property-panel__label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #94A3B8;
  margin-bottom: 4px;
}

/* ---------------------------------------------------------------------------
   Canvas toolbar
   --------------------------------------------------------------------------- */

.flow-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: #FFFFFF;
  border-bottom: 1px solid #E2E8F0;
}

.flow-toolbar__btn {
  padding: 5px 12px;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid #E2E8F0;
  background: #FFFFFF;
  cursor: pointer;
  transition: background 0.1s;
}

.flow-toolbar__btn:hover {
  background: #F1F5F9;
}

.flow-toolbar__btn--primary {
  background: #4F46E5;
  color: #FFFFFF;
  border-color: #4F46E5;
}

.flow-toolbar__btn--primary:hover {
  background: #4338CA;
}

/* ---------------------------------------------------------------------------
   jsPlumb connector lines — smooth, rounded flowchart routing
   --------------------------------------------------------------------------- */

.jtk-endpoint {
  z-index: 20;
  cursor: crosshair;
}

.jtk-connector {
  z-index: 15;
  cursor: pointer;
  transition: opacity 0.15s;
}

.jtk-connector:hover {
  opacity: 0.75;
}

.jtk-connector path {
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------------------------------------------------------------------------
   Connection type labels (e.g. "fallback", "yes", "no")
   --------------------------------------------------------------------------- */

.flow-conn-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 6px;
  border-radius: 10px;
  white-space: nowrap;
  pointer-events: none;
  border: 1px solid transparent;
}

.flow-conn-label--fallback {
  background: #FFF7ED;
  color: #C2410C;
  border-color: #FED7AA;
}

.flow-conn-label--dependency {
  background: #F8FAFC;
  color: #64748B;
  border-color: #E2E8F0;
}

.flow-conn-label--yes_branch {
  background: #F0FDF4;
  color: #15803D;
  border-color: #BBF7D0;
}

.flow-conn-label--no_branch {
  background: #FEF2F2;
  color: #B91C1C;
  border-color: #FECACA;
}