.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: color-mix(in srgb, var(--color-panel), #000 14%);
  border-bottom: 1px solid var(--color-line);
  flex-wrap: wrap;
}

.header-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5em;
  color: #eef3ff;
  white-space: nowrap;
  text-transform: uppercase;
}

.header-title-wrap {
  display: inline-flex;
  align-items: baseline;
  min-width: 0;
}

.header-title span {
  color: var(--color-accent);
}

.header-build-commit {
  font-size: 0.6em;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--color-muted);
  white-space: nowrap;
  opacity: 0.9;
}

.action-group {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.main {
  display: flex;
  flex: 1;
  min-height: 0;
}

.pipeline-panel {
  width: calc(100% - 320px);
  min-width: 520px;
  max-width: calc(100% - 320px);
  display: flex;
  flex-direction: column;
  background: color-mix(in srgb, var(--color-panel), #000 6%);
  border-right: 1px solid var(--color-line);
  min-height: 0;
}

.pipeline-header,
.preview-header {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-line);
  background: color-mix(in srgb, var(--color-panel-2), #000 6%);
}

.pipeline-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-strong);
}

.pipeline-help,
.preview-help {
  font-size: 11px;
  color: var(--color-muted);
}

.pipeline-workspace {
  flex: 1;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  column-gap: 42px;
  min-height: 0;
  position: relative;
}

.param-column {
  position: relative;
  z-index: 3;
  border-right: 1px solid var(--color-line);
  padding: 12px;
  overflow: auto;
  background: color-mix(in srgb, var(--color-panel-2), #000 12%);
}

.param-node-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step-column {
  position: relative;
  z-index: 3;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.connection-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 6;
}

.connection-path {
  fill: none;
  stroke: var(--connection-color, #89bbff);
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0.8;
}

.connection-path-preview {
  stroke: var(--connection-color, #cfe2ff);
  stroke-dasharray: 6 6;
  opacity: 0.95;
}

.statusbar {
  border-top: 1px solid var(--color-line);
}

.resizer {
  width: 6px;
  cursor: col-resize;
  background: linear-gradient(to bottom, transparent, var(--color-resizer-line), transparent);
  flex-shrink: 0;
}

.resizer.dragging {
  background: var(--color-resizer-active);
}

.preview-panel {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: color-mix(in srgb, var(--color-panel), #000 14%);
}

.preview-display-section {
  display: flex;
  flex-direction: column;
  flex: 0 0 360px;
  min-height: 190px;
  max-height: calc(100% - 170px);
}

.preview-layout-resizer {
  height: 6px;
  cursor: row-resize;
  flex-shrink: 0;
  background: linear-gradient(to right, transparent, var(--color-resizer-line), transparent);
}

.preview-layout-resizer.dragging {
  background: var(--color-resizer-active);
}

.preview-settings-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

.material-panel {
  border-top: 1px solid var(--color-line);
  background:
    linear-gradient(180deg, rgba(122, 182, 255, 0.06), transparent 55%),
    color-mix(in srgb, var(--color-panel-2), #000 8%);
  padding: 10px 12px 12px;
}

.light-panel {
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: color-mix(in srgb, var(--color-panel-2), #000 10%);
  padding: 10px 12px 12px;
}

.preview-canvas-wrap {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
}

.preview-shape-bar {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid var(--color-line);
  border-bottom: none;
  background: color-mix(in srgb, var(--color-panel-2), #000 10%);
}

#gl-canvas {
  width: 100%;
  height: 100%;
  min-height: 0;
  display: block;
  cursor: grab;
}

#gl-canvas:active {
  cursor: grabbing;
}

.light-gizmo-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.light-gizmo-layer #light-gizmo-arrow path {
  fill: var(--color-light-gizmo-main);
}

.light-gizmo-origin {
  fill: #ffe7a6;
  opacity: 0.95;
}

.light-gizmo-tip {
  fill: var(--color-light-gizmo-main);
  stroke: #ffe8b5;
  stroke-width: 1;
}

.light-gizmo-label {
  fill: #fff1cf;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  paint-order: stroke;
  stroke: rgba(45, 30, 0, 0.65);
  stroke-width: 2.4px;
  stroke-linejoin: round;
}

.axis-gizmo-layer {
  position: absolute;
  left: 10px;
  top: 10px;
  width: 92px;
  height: 92px;
  pointer-events: none;
  overflow: visible;
}

.axis-gizmo-back {
  fill: rgba(12, 16, 22, 0.62);
  stroke: rgba(151, 170, 204, 0.3);
  stroke-width: 1;
}

.axis-gizmo-line {
  fill: none;
  stroke-width: 2.1;
  stroke-linecap: round;
}

.axis-gizmo-line-x {
  stroke: var(--color-axis-x);
}

.axis-gizmo-line-y {
  stroke: var(--color-axis-y);
}

.axis-gizmo-line-z {
  stroke: var(--color-axis-z);
}

.axis-gizmo-origin {
  fill: #e6edf9;
}

.axis-gizmo-tip {
  stroke-width: 1;
}

.axis-gizmo-tip-x {
  fill: var(--color-axis-x);
  stroke: #ffd3cf;
}

.axis-gizmo-tip-y {
  fill: var(--color-axis-y);
  stroke: #d8ffda;
}

.axis-gizmo-tip-z {
  fill: var(--color-axis-z);
  stroke: #d7eaff;
}

.axis-gizmo-label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: middle;
  paint-order: stroke;
  stroke: rgba(12, 16, 22, 0.78);
  stroke-width: 2.6px;
  stroke-linejoin: round;
}

.axis-gizmo-label-x {
  fill: #ffc1ba;
}

.axis-gizmo-label-y {
  fill: #d2ffd4;
}

.axis-gizmo-label-z {
  fill: #c4e0ff;
}

.shader-dialog,
.lut-editor-dialog {
  margin: auto;
  max-height: calc(100vh - 28px);
  border: none;
  padding: 0;
  background: transparent;
  color: var(--color-text);
}

.shader-dialog {
  width: min(980px, calc(100vw - 28px));
  overflow: hidden;
}

.shader-dialog::backdrop,
.lut-editor-dialog::backdrop {
  background: rgba(8, 11, 16, 0.72);
  backdrop-filter: blur(2px);
}

.pipeline-file-drop-overlay {
  position: fixed;
  inset: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(7, 10, 16, 0.3);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 140ms ease, visibility 140ms ease;
  z-index: 120;
}

.pipeline-file-drop-overlay[data-active='true'] {
  opacity: 1;
  visibility: visible;
}

.pipeline-file-drop-overlay-card {
  width: min(560px, calc(100vw - 48px));
  border-radius: 22px;
  border: 1px solid color-mix(in srgb, var(--color-accent), #fff 18%);
  padding: 28px 32px;
  text-align: center;
  background:
    radial-gradient(circle at top, rgba(122, 182, 255, 0.22), transparent 58%),
    linear-gradient(180deg, rgba(9, 14, 24, 0.96), rgba(13, 20, 31, 0.92));
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.38);
  outline: 2px dashed color-mix(in srgb, var(--color-accent), #fff 28%);
  outline-offset: -10px;
}

.pipeline-file-drop-overlay-title {
  font-family: var(--font-sans);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #f5f8ff;
}

.pipeline-file-drop-overlay-description {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
}

.lut-strip-panel {
  position: relative;
  flex: 0 0 auto;
  border-top: 1px solid var(--color-line);
  background:
    linear-gradient(180deg, var(--color-bg2), var(--color-bg) 55%),
    color-mix(in srgb, var(--color-panel), #000 12%);
  padding-top: 10px;
}

.lut-file-drop-overlay {
  position: absolute;
  inset: 10px 12px 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  border-radius: 18px;
  background: rgba(10, 16, 27, 0.72);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 140ms ease, visibility 140ms ease;
  z-index: 4;
}

.lut-file-drop-overlay[data-active='true'] {
  opacity: 1;
  visibility: visible;
}

.lut-file-drop-overlay-card {
  width: min(420px, 100%);
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--color-accent), #fff 18%);
  padding: 20px 22px;
  text-align: center;
  background: linear-gradient(180deg, rgba(18, 28, 45, 0.94), rgba(12, 19, 31, 0.92));
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.28);
  outline: 2px dashed color-mix(in srgb, var(--color-accent), #fff 24%);
  outline-offset: -8px;
}

.lut-file-drop-overlay-title {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #f5f8ff;
}

.lut-file-drop-overlay-description {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-muted);
}

.shader-dialog-surface,
.lut-editor-dialog-surface {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-line);
  border-radius: 14px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(122, 182, 255, 0.07), transparent 45%),
    color-mix(in srgb, var(--color-panel-2), #000 14%);
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.5);
}

.shader-dialog-surface {
  min-height: 0;
  height: min(74vh, 720px);
  max-height: calc(100vh - 28px);
}

.lut-strip-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
  padding-left: 12px;
}

.lut-strip-list {
  display: flex;
}

.lut-editor-dialog {
  width: min(860px, calc(100vw - 28px));
}

.lut-editor-dialog-surface {
  height: min(80vh, 680px);
}

@media screen and (max-width: 1180px) {
  .pipeline-panel {
    min-width: 430px;
  }
}

@media screen and (max-width: 900px) {
  .main {
    flex-direction: column;
  }

  .pipeline-panel {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    min-height: 55%;
  }

  .resizer {
    width: 100%;
    height: 6px;
    cursor: row-resize;
  }

  .pipeline-workspace {
    grid-template-columns: 1fr;
    grid-template-rows: 200px minmax(0, 1fr);
    column-gap: 0;
    row-gap: 14px;
  }

  .preview-shape-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .preview-display-section {
    flex-basis: 300px;
    min-height: 170px;
    max-height: none;
  }

  .shader-dialog {
    width: calc(100vw - 16px);
    max-height: calc(100vh - 16px);
  }

  .pipeline-file-drop-overlay {
    inset: 10px;
    padding: 18px;
  }

  .pipeline-file-drop-overlay-card {
    width: 100%;
    padding: 24px 20px;
    border-radius: 18px;
  }

  .shader-dialog-surface {
    min-height: 0;
    height: min(82vh, 700px);
    max-height: calc(100vh - 16px);
  }

  .axis-gizmo-layer {
    left: 8px;
    top: 8px;
    width: 82px;
    height: 82px;
  }

  .param-column {
    border-right: none;
    border-bottom: 1px solid var(--color-line);
  }

  .lut-strip-panel {
    padding: 10px;
  }

  .lut-file-drop-overlay {
    inset: 8px 10px 10px;
    padding: 12px;
  }

  .lut-strip-head {
    flex-wrap: wrap;
  }
}