.builder {
  position: fixed;
  inset: 0;
  z-index: 130;
  background:
    radial-gradient(circle at 12% -12%, rgba(128, 151, 187, 0.12), transparent 34%),
    linear-gradient(180deg, #121922 0%, #0f141b 100%);
}

.builder-shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100%;
}

.builder-topbar {
  border-bottom: 1px solid rgba(175, 190, 212, 0.18);
  background: linear-gradient(180deg, rgba(24, 33, 44, 0.96), rgba(20, 28, 38, 0.96));
  padding: 7px 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.builder-top-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.builder-title {
  display: inline-block;
  color: #e8f3ff;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.01em;
  padding: 2px 8px;
  background: rgba(15, 23, 42, 0.6);
  border-radius: 6px;
  border: 1px solid rgba(175, 190, 212, 0.18);
}

.builder-pill {
  border: 1px solid rgba(175, 190, 212, 0.3);
  border-radius: 7px;
  background: rgba(28, 37, 49, 0.88);
  color: #d4deeb;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 600;
}

.builder-body {
  min-height: 0;
  position: relative;
  display: flex;
  flex-direction: row;
  height: 100%;
  width: 100%;
  overflow: hidden;
}

.hidden-panel {
  display: none !important;
}

.builder-left,
.builder-center,
.builder-right {
  min-height: 0;
}

.builder-center {
  flex: 1 1 0;
  min-width: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  background: #111a27;
  overflow: hidden;
}

.builder-left {
  flex: 0 0 320px;
  width: 320px;
  max-width: 380px;
  height: 100%;
  background: #0d1522;
  position: relative;
  z-index: 12;
  border-right: 1px solid rgba(175, 190, 212, 0.2);
  box-shadow: 4px 0 18px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.builder-right {
  flex: 0 0 340px;
  width: 340px;
  max-width: 380px;
  height: 100%;
  background: #0d1522;
  position: relative;
  z-index: 12;
  border-left: 1px solid rgba(175, 190, 212, 0.2);
  box-shadow: -4px 0 18px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  pointer-events: auto;
}

@media (max-width: 860px) {
  .builder-left,
  .builder-right {
    position: absolute;
    top: 0;
    bottom: 0;
    z-index: 30;
    width: min(88vw, 360px);
    max-width: 88vw;
  }
  .builder-left {
    left: 0;
    box-shadow: 8px 0 28px rgba(0, 0, 0, 0.6);
  }
  .builder-right {
    right: 0;
    box-shadow: -8px 0 28px rgba(0, 0, 0, 0.6);
  }
}

.panel-title {
  border-bottom: 1px solid rgba(169, 186, 210, 0.18);
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 700;
  color: #dbe3ef;
  background: rgba(18, 27, 41, 0.98);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.builder-left .panel-title,
.builder-right .panel-title,
.builder-center .panel-title {
  font-size: 14px;
}

.builder-canvas-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 12px;
  background: rgba(15, 23, 36, 0.95);
  border-bottom: 1px solid rgba(175, 190, 212, 0.14);
}

.builder-scroll {
  min-height: 0;
  overflow: auto;
  padding: 10px;
  display: grid;
  gap: 8px;
  align-content: start;
}

.builder-right .builder-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
}

.builder-right input {
  margin: 10px;
  width: calc(100% - 20px);
}

#builderPalette {
  display: block;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
}

.builder-canvas {
  position: relative;
  min-height: 0;
  overflow: scroll;
  background-color: #111a27;
  background-image:
    radial-gradient(circle, rgba(148, 168, 196, 0.2) 1px, transparent 1px),
    radial-gradient(circle, rgba(122, 142, 173, 0.08) 1px, transparent 1px);
  background-size: 20px 20px, 80px 80px;
  cursor: grab;
  touch-action: none;
  overscroll-behavior: contain;
}

.builder-canvas.panning {
  cursor: grabbing;
}

.builder-viewport {
  position: relative;
  width: 12000px;
  height: 9000px;
}

.builder-links {
  position: absolute;
  inset: 0;
  width: 12000px;
  height: 9000px;
  pointer-events: none;
  z-index: 0;
}

.builder-node-layer,
.builder-nodes {
  z-index: 1;
}

.builder-links path {
  filter: drop-shadow(0 0 3px rgba(130, 196, 255, 0.15));
}

.builder-node-layer {
  position: relative;
  width: 12000px;
  height: 9000px;
}

.palette-group {
  border: 1px solid rgba(175, 190, 212, 0.24);
  border-radius: 10px;
  background: rgba(19, 27, 39, 0.8);
  overflow: hidden;
}

.palette-title-btn {
  width: 100%;
  border: 0;
  border-bottom: 1px solid rgba(175, 190, 212, 0.18);
  background: linear-gradient(180deg, rgba(42, 54, 70, 0.9), rgba(34, 45, 59, 0.9));
  color: #d9e2ef;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 700;
  padding: 7px 9px;
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  text-align: left;
}

.palette-title-btn:hover {
  filter: brightness(1.1);
}

.palette-title-btn .caret {
  width: 13px;
  color: #b9c9de;
}

.palette-title-btn .count {
  color: #a8b8ce;
  font-size: 11px;
}

.palette-items {
  display: grid;
  gap: 6px;
  padding: 8px;
}

.palette-btn {
  text-align: left;
  border: 1px solid rgba(175, 190, 212, 0.24);
  border-radius: 9px;
  background: linear-gradient(180deg, rgba(31, 41, 54, 0.92), rgba(25, 34, 46, 0.92));
  color: #dce5f1;
  padding: 8px;
  display: grid;
  gap: 3px;
}

.palette-btn:hover {
  background: linear-gradient(180deg, rgba(41, 53, 69, 0.95), rgba(33, 44, 59, 0.95));
}

.palette-btn.disabled {
  opacity: 0.58;
}

.palette-btn .comp-name {
  font-weight: 700;
}

.palette-btn .comp-id {
  color: #9fbbe8;
  font-size: 11px;
  font-family: var(--font-mono);
}