.flow-editor-main {
  display: flex;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(248, 250, 252, 0.92), rgba(241, 245, 249, 0.96)),
    radial-gradient(circle at top left, rgba(14, 165, 233, 0.08), transparent 24%);
}

.flow-editor-canvas-shell {
  display: flex;
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  flex-direction: column;
}

.flow-editor-canvas {
  flex: 1 1 auto;
  min-height: 0;
}

.flow-editor-assistant {
  display: flex;
  position: relative;
  flex: 0 0 380px;
  width: 380px;
  min-width: 320px;
  max-width: 420px;
  height: 100%;
  min-height: 0;
  background: #fff;
  overflow: hidden;
  transition: width 180ms ease, flex-basis 180ms ease, min-width 180ms ease;
}

.flow-editor-assistant-collapsed {
  flex: 0 0 72px;
  width: 72px;
  min-width: 72px;
}

.flow-editor-assistant-toggle {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: #0f172a;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 10px 18px rgba(15, 23, 42, 0.1);
}

.flow-editor-assistant-collapsed .flow-editor-assistant-toggle {
  right: 50%;
  transform: translateX(50%);
  padding: 10px;
}

.flow-editor-assistant-collapsed .flow-editor-assistant-toggle span {
  display: none;
}

.flow-editor-assistant-rail {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  background:
    radial-gradient(circle at top, rgba(251, 191, 36, 0.22), transparent 28%),
    linear-gradient(180deg, #fffdf7 0%, #f8fafc 100%);
  color: #0f172a;
}

.flow-editor-assistant-rail-icon,
.flow-editor-assistant-rail-wand {
  font-size: 18px;
  color: #0f766e;
}

.flow-editor-assistant-rail-text {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.flow-editor-empty {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  padding: 32px;
  text-align: center;
  color: #475569;
}

.flow-editor-empty h2 {
  margin: 0;
  font-size: 28px;
  font-weight: 800;
  color: #0f172a;
}

.flow-editor-empty p {
  margin: 0;
  max-width: 420px;
  line-height: 1.5;
}

@media (max-width: 1100px) {
  .flow-editor-main {
    flex-direction: column;
  }

  .flow-editor-assistant {
    flex: 0 0 auto;
    width: 100%;
    max-width: none;
    min-width: 0;
    height: 42vh;
  }

  .flow-editor-assistant-collapsed {
    width: 72px;
    min-width: 72px;
    height: 42vh;
  }
}