/* (starting point provided) */
/* ============================================================
   BUILDYBOT — APP VIEWER LAYOUT
   ============================================================ */

/* --- App-specific custom properties (override these) --- */
:root {
  --app-header-height: 48px;
  --app-header-bg: #0f172a;
  --app-header-text: #f8fafc;
  --app-header-border: #1f2937;
  --app-header-font-size: 0.88rem;
  --app-header-padding-x: 1rem;
  --app-back-btn-bg: transparent;
  --app-back-btn-color: var(--app-header-text);
  --app-back-btn-hover-bg: rgba(255, 255, 255, 0.12);
  --app-back-btn-radius: 10px;
  --app-body-bg: #ffffff;
  --app-body-padding: 0;

  --radius: 14px;
  --shadow: 0 6px 18px rgba(15, 23, 42, 0.12);
  --line: #334155;

  --canvas-bg: #ffffff;
  --panel-bg: #ffffff;
  --panel-border: #e5e7eb;
  --text: #0f172a;
  --muted: #475569;

  --node-border: #cbd5e1;

  /* theme tokens (overridden via [data-theme]) */
  --c-terminator-bg: #eef2ff;
  --c-terminator-border: #c7d2fe;
  --c-terminator-text: #1e1b4b;

  --c-channel-bg: #ecfeff;
  --c-channel-border: #a5f3fc;
  --c-channel-text: #083344;

  --c-actor-bg: #f0fdf4;
  --c-actor-border: #86efac;
  --c-actor-text: #052e16;

  --c-system-bg: #fff7ed;
  --c-system-border: #fdba74;
  --c-system-text: #431407;

  --c-output-bg: #fdf2f8;
  --c-output-border: #fbcfe8;
  --c-output-text: #500724;

  --density-gap-x: 46px;
  --density-gap-y: 34px;
  --node-w: 220px;
  --node-h: 86px;
}

/* --- Header bar --- */
.app-viewer-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  display: flex;
  align-items: center;
  height: var(--app-header-height);
  background: var(--app-header-bg);
  color: var(--app-header-text);
  border-bottom: 1px solid var(--app-header-border);
  padding: 0 var(--app-header-padding-x);
  gap: 0.75rem;
  font-size: var(--app-header-font-size);
}

/* --- Back button --- */
.app-viewer-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  background: var(--app-back-btn-bg);
  color: var(--app-back-btn-color);
  border: none;
  border-radius: var(--app-back-btn-radius);
  font-size: inherit;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease;
}
.app-viewer-back:hover,
.app-viewer-back:focus-visible {
  background: var(--app-back-btn-hover-bg);
  color: var(--app-back-btn-color);
}

.app-viewer-sep {
  width: 1px;
  height: 1.2rem;
  background: currentColor;
  opacity: 0.25;
  flex-shrink: 0;
}
.app-viewer-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.app-viewer-data-link {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--app-header-text);
  opacity: 0.9;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.15s ease, background-color 0.15s ease;
  cursor: pointer;
}
.app-viewer-data-link:hover,
.app-viewer-data-link:focus-visible {
  opacity: 1;
  background: rgba(255,255,255,0.14);
  color: var(--app-header-text);
}

.app-viewer-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}
.app-viewer-actions button,
.app-viewer-actions select {
  height: 32px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.22);
  background: rgba(255,255,255,0.08);
  color: var(--app-header-text);
  padding: 0 10px;
  outline: none;
}
.app-viewer-actions button:hover {
  background: rgba(255,255,255,0.14);
  cursor: pointer;
}

/* --- Main content area beneath the header --- */
.app-viewer-body {
  flex: 1;
  background: var(--app-body-bg);
  padding: var(--app-body-padding);
  min-height: calc(100vh - var(--app-header-height));
}

.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px;
  color: var(--text);
}

.layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 16px;
  align-items: start;
}

.canvasWrap {
  background: var(--canvas-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.canvasHeader {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--panel-border);
  background: #ffffff;
}
.canvasHeader h1 {
  font-size: 1.05rem;
  margin: 0;
}
.subtitle {
  margin: 4px 0 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}
.legendItem {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  background: #fff;
  color: var(--muted);
  font-size: 0.8rem;
}
.legendDot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  border: 1px solid rgba(15,23,42,0.12);
}

.canvas {
  position: relative;
  background: #ffffff;
  padding: 18px 18px 26px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(11, var(--node-w));
  grid-auto-rows: var(--node-h);
  gap: var(--density-gap-y) var(--density-gap-x);
  align-items: center;
  justify-content: start;
}

.canvasInner {
  position: relative;
}

.node {
  width: var(--node-w);
  min-height: var(--node-h);
  border-radius: var(--radius);
  border: 1.5px solid var(--node-border);
  background: #fff;
  box-shadow: 0 1px 0 rgba(15,23,42,0.02);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  user-select: text;
}

.nodeTitle {
  font-weight: 800;
  outline: none;
  line-height: 1.15;
}
.nodeMeta {
  color: var(--muted);
  font-size: 0.88rem;
  outline: none;
  line-height: 1.2;
}

.nodeTitle[contenteditable="true"]:focus,
.nodeMeta[contenteditable="true"]:focus {
  box-shadow: 0 0 0 3px rgba(59,130,246,0.25);
  border-radius: 10px;
  padding: 2px 4px;
  margin: -2px -4px;
  background: #fff;
}

/* type styling */
.node-terminator {
  background: var(--c-terminator-bg);
  border-color: var(--c-terminator-border);
  color: var(--c-terminator-text);
  border-radius: 999px;
  padding: 12px 16px;
}
.node-terminator .nodeMeta { color: color-mix(in srgb, var(--c-terminator-text) 70%, #ffffff 30%); }

.node-channel {
  background: var(--c-channel-bg);
  border-color: var(--c-channel-border);
  color: var(--c-channel-text);
}
.node-channel .nodeMeta { color: color-mix(in srgb, var(--c-channel-text) 70%, #ffffff 30%); }

.node-actor {
  background: var(--c-actor-bg);
  border-color: var(--c-actor-border);
  color: var(--c-actor-text);
}
.node-actor .nodeMeta { color: color-mix(in srgb, var(--c-actor-text) 70%, #ffffff 30%); }

.node-system {
  background: var(--c-system-bg);
  border-color: var(--c-system-border);
  color: var(--c-system-text);
}
.node-system .nodeMeta { color: color-mix(in srgb, var(--c-system-text) 70%, #ffffff 30%); }

.node-output {
  background: var(--c-output-bg);
  border-color: var(--c-output-border);
  color: var(--c-output-text);
}
.node-output .nodeMeta { color: color-mix(in srgb, var(--c-output-text) 70%, #ffffff 30%); }

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

.notes {
  border-top: 1px solid var(--panel-border);
  padding: 14px 16px 16px;
  background: #ffffff;
}
.notesHeader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.notes h2 {
  font-size: 0.98rem;
  margin: 0;
}
.notesActions button {
  border: 1px solid var(--panel-border);
  background: #fff;
  color: var(--text);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
}
.notesActions button:hover { background: #f8fafc; }

textarea {
  width: 100%;
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: #ffffff;
  color: var(--text);
}

.hint {
  margin-top: 10px;
  font-size: 0.86rem;
  color: var(--muted);
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
}
.panelSection + .panelSection {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--panel-border);
}
.panel h3 {
  margin: 0 0 10px 0;
  font-size: 0.95rem;
}
.field {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 10px;
  align-items: center;
  margin: 10px 0;
}
.field label {
  color: var(--muted);
  font-size: 0.9rem;
}
.field select {
  height: 36px;
  border-radius: 12px;
  border: 1px solid var(--panel-border);
  background: #fff;
  color: var(--text);
  padding: 0 10px;
}

.swatches {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.swatch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--panel-border);
  background: #fff;
  border-radius: 12px;
  padding: 10px 10px;
}
.swatchLeft {
  display: flex;
  align-items: center;
  gap: 10px;
}
.swatchChip {
  width: 16px;
  height: 16px;
  border-radius: 6px;
  border: 1px solid rgba(15,23,42,0.15);
}
.swatchName {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 650;
}
.small {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.25;
}

.btnRow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.btnRow button,
#restoreDefaultBtn,
#clearSavedBtn {
  border: 1px solid var(--panel-border);
  background: #fff;
  color: var(--text);
  border-radius: 12px;
  padding: 10px 10px;
  cursor: pointer;
}
.btnRow button:hover { background: #f8fafc; }

/* themes */
[data-theme="classic"]{
  --c-terminator-bg: #eef2ff;
  --c-terminator-border: #c7d2fe;
  --c-terminator-text: #1e1b4b;

  --c-channel-bg: #ecfeff;
  --c-channel-border: #a5f3fc;
  --c-channel-text: #083344;

  --c-actor-bg: #f0fdf4;
  --c-actor-border: #86efac;
  --c-actor-text: #052e16;

  --c-system-bg: #fff7ed;
  --c-system-border: #fdba74;
  --c-system-text: #431407;

  --c-output-bg: #fdf2f8;
  --c-output-border: #fbcfe8;
  --c-output-text: #500724;

  --line: #334155;
}

[data-theme="modern"]{
  --c-terminator-bg: #e0f2fe;
  --c-terminator-border: #7dd3fc;
  --c-terminator-text: #0c4a6e;

  --c-channel-bg: #ecfccb;
  --c-channel-border: #bef264;
  --c-channel-text: #365314;

  --c-actor-bg: #ffe4e6;
  --c-actor-border: #fda4af;
  --c-actor-text: #881337;

  --c-system-bg: #ede9fe;
  --c-system-border: #c4b5fd;
  --c-system-text: #3b0764;

  --c-output-bg: #fef9c3;
  --c-output-border: #fde047;
  --c-output-text: #713f12;

  --line: #0f172a;
}

[data-theme="highContrast"]{
  --c-terminator-bg: #ffffff;
  --c-terminator-border: #000000;
  --c-terminator-text: #000000;

  --c-channel-bg: #ffffff;
  --c-channel-border: #000000;
  --c-channel-text: #000000;

  --c-actor-bg: #ffffff;
  --c-actor-border: #000000;
  --c-actor-text: #000000;

  --c-system-bg: #ffffff;
  --c-system-border: #000000;
  --c-system-text: #000000;

  --c-output-bg: #ffffff;
  --c-output-border: #000000;
  --c-output-text: #000000;

  --node-border: #000000;
  --panel-border: #000000;
  --line: #000000;
}

[data-theme="mono"]{
  --c-terminator-bg: #f8fafc;
  --c-terminator-border: #cbd5e1;
  --c-terminator-text: #0f172a;

  --c-channel-bg: #f8fafc;
  --c-channel-border: #cbd5e1;
  --c-channel-text: #0f172a;

  --c-actor-bg: #f8fafc;
  --c-actor-border: #cbd5e1;
  --c-actor-text: #0f172a;

  --c-system-bg: #f8fafc;
  --c-system-border: #cbd5e1;
  --c-system-text: #0f172a;

  --c-output-bg: #f8fafc;
  --c-output-border: #cbd5e1;
  --c-output-text: #0f172a;

  --line: #334155;
}

/* density */
[data-density="compact"]{
  --density-gap-x: 28px;
  --density-gap-y: 20px;
  --node-w: 210px;
  --node-h: 78px;
}
[data-density="comfortable"]{
  --density-gap-x: 46px;
  --density-gap-y: 34px;
  --node-w: 220px;
  --node-h: 86px;
}
[data-density="spacious"]{
  --density-gap-x: 62px;
  --density-gap-y: 44px;
  --node-w: 240px;
  --node-h: 92px;
}

/* responsive */
@media (max-width: 1100px){
  .layout{ grid-template-columns: 1fr; }
}
@media (max-width: 575.98px) {
  .app-viewer-header {
    gap: 0.5rem;
    --app-header-padding-x: 0.65rem;
  }
  .app-viewer-back span { display: none; }
  .app-viewer-data-link {
    position: static;
    transform: none;
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
  }
  .app-viewer-actions select { max-width: 140px; }
}