:root {
  --accent: #f0f4ff;
  --bg: #f6f7fb;
  --bg-muted: #e9ebf3;
  --border: #cfd5e4;
  --mono: ui-monospace, 'SFMono-Regular', Menlo, Consolas, 'Liberation Mono', monospace;
  --muted: #6b7280;
  --primary: #4a6cf7;
  --row-h: 24px;
  --surface: #ffffff;
  --text: #1f2630;

  /* Vaporwave Palette */
  --vw-orange: #FF5E00;
  --vw-yellow: #FFE600;
  --vw-fuchsia: #FF00FF;
  --vw-blue: #00FFFF;
  --vw-purple: #8A2BE2;
  --vw-green: #39FF14;
  --vw-red: #FF2D55;

  /* Waveform canvas colours (darker neon variants for light backgrounds) */
  --wave-bg: #ffffff;
  --wave-bit: #12913a;
  --wave-cursor: #c400c4;
  --wave-grid: #eceff6;
  --wave-group: rgba(74, 108, 247, 0.07);
  --wave-marker: var(--vw-purple);
  --wave-ruler: #f3f5fa;
  --wave-select: rgba(74, 108, 247, 0.12);
  --wave-text: #1f2630;
  --wave-vec: #0a7ea4;
  --wave-vec-fill: rgba(10, 126, 164, 0.08);
  --wave-x: #e0244a;
  --wave-z: #d35400;

  /* User-picked trace colors: the vaporwave palette, darkened for light mode */
  --trace-blue: #0a7ea4;
  --trace-fuchsia: #c400c4;
  --trace-green: #12913a;
  --trace-orange: #d35400;
  --trace-purple: #8a2be2;
  --trace-red: #e0244a;
  --trace-yellow: #b08d00;
}

body.dark {
  --accent: #1f2937;
  --bg: #111827;
  --bg-muted: #1f2937;
  --border: #374151;
  --primary: #8b9cf9;
  --surface: #0b1221;
  --text: #ffffff;

  --wave-bg: #0b1221;
  --wave-bit: var(--vw-green);
  --wave-cursor: var(--vw-fuchsia);
  --wave-grid: #1a2335;
  --wave-group: rgba(139, 156, 249, 0.08);
  --wave-marker: #b77cff;
  --wave-ruler: #111a2c;
  --wave-select: rgba(139, 156, 249, 0.16);
  --wave-text: #e5e7eb;
  --wave-vec: var(--vw-blue);
  --wave-vec-fill: rgba(0, 255, 255, 0.07);
  --wave-x: var(--vw-red);
  --wave-z: var(--vw-orange);

  --trace-blue: var(--vw-blue);
  --trace-fuchsia: var(--vw-fuchsia);
  --trace-green: var(--vw-green);
  --trace-orange: var(--vw-orange);
  --trace-purple: #b77cff;
  --trace-red: var(--vw-red);
  --trace-yellow: var(--vw-yellow);
}

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

/* ---------------------------------------------------------------- Header */
.wv-header {
  margin-bottom: 0;
  padding: 0.75rem 0;
}

.wv-header-inner {
  align-items: center;
  display: flex;
  justify-content: space-between;
  padding: 0 1rem;
}

.wv-header h1 {
  font-size: 1.35rem;
}

/* Loaded file name; same type as .back-link. */
.header-file {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 600;
}

.header-left {
  align-items: center;
  display: flex;
  gap: 1.5rem;
}

.back-link {
  align-items: center;
  color: var(--muted);
  display: flex;
  font-size: 0.875rem;
  font-weight: 600;
  gap: 0.5rem;
  text-decoration: none;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--primary);
}

.header-actions {
  align-items: center;
  display: flex;
  flex-direction: row;
  gap: 0.5rem;
}

/* --------------------------------------------------------------- Toolbar */
.wv-toolbar {
  align-items: center;
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding: 0.5rem 1rem;
}

.tool-group {
  align-items: center;
  display: flex;
  gap: 0.35rem;
}

.tool-btn {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  transition: border-color 0.15s, background-color 0.15s;
  white-space: nowrap;
}

.tool-btn:hover:not(:disabled) {
  border-color: var(--primary);
}

.tool-btn:disabled {
  cursor: default;
  opacity: 0.45;
}

.tool-btn.primary-tool {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.icon-tool {
  font-size: 1rem;
  line-height: 1;
  min-width: 2rem;
}

.tool-label {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
}

.tool-select {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.8rem;
  padding: 0.3rem 0.4rem;
}

.menu-wrap {
  position: relative;
}

.popup-menu {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.18);
  display: flex;
  flex-direction: column;
  min-width: 15rem;
  padding: 0.3rem;
  position: absolute;
  z-index: 50;
}

.popup-menu.hidden {
  display: none;
}

.popup-menu button {
  background: none;
  border: none;
  border-radius: 0.35rem;
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.82rem;
  padding: 0.45rem 0.6rem;
  text-align: left;
}

.popup-menu button:hover:not(:disabled) {
  background-color: var(--accent);
}

.popup-menu button:disabled {
  cursor: default;
  opacity: 0.45;
}

.popup-menu .menu-sub {
  color: var(--muted);
  display: block;
  font-size: 0.72rem;
}

.popup-menu hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.25rem 0;
}

.context-menu {
  position: fixed;
}

/* ------------------------------------------------------------- Workspace */
.wv-workspace {
  display: flex;
  flex: 1;
  min-height: 0;
}

.wv-sidebar {
  background-color: var(--surface);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  min-width: 0;
  width: 250px;
}

.sidebar-head {
  border-bottom: 1px solid var(--border);
  padding: 0.5rem;
}

.filter-input,
.text-input {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  box-sizing: border-box;
  color: var(--text);
  font-family: inherit;
  font-size: 0.82rem;
  padding: 0.4rem 0.5rem;
  width: 100%;
}

.hier-tree {
  flex: 1;
  font-size: 0.8rem;
  overflow: auto;
  padding: 0.25rem 0;
  user-select: none;
}

.tree-item {
  align-items: center;
  cursor: default;
  display: flex;
  gap: 0.3rem;
  padding: 0.15rem 0.5rem;
  white-space: nowrap;
}

.tree-item:hover {
  background-color: var(--accent);
}

.tree-item.selected {
  background-color: var(--wave-select);
}

.tree-caret {
  color: var(--muted);
  cursor: pointer;
  display: inline-block;
  text-align: center;
  width: 0.9rem;
}

.tree-scope-name {
  font-weight: 600;
}

.tree-kind {
  border-radius: 0.25rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  min-width: 1.6rem;
  text-align: center;
}

.tree-signal-name {
  font-family: var(--mono);
}

.tree-add {
  background: none;
  border: 1px solid transparent;
  border-radius: 0.25rem;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.75rem;
  margin-left: auto;
  opacity: 0;
  padding: 0 0.3rem;
}

.tree-item:hover .tree-add {
  opacity: 1;
}

.tree-add:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.tree-empty {
  color: var(--muted);
  font-size: 0.8rem;
  padding: 0.75rem;
}

.sidebar-foot {
  align-items: center;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem;
}

.sidebar-hint {
  color: var(--muted);
  font-size: 0.72rem;
}

/* ---------------------------------------------------------- Wave columns */
.wv-main {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-width: 0;
  position: relative;
}

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

.names-col,
.values-col {
  background-color: var(--surface);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.names-col {
  width: 220px;
}

.values-col {
  width: 110px;
}

.col-resizer {
  background-color: var(--border);
  cursor: col-resize;
  width: 3px;
}

.col-resizer:hover {
  background-color: var(--primary);
}

.col-head {
  align-items: center;
  background-color: var(--wave-ruler);
  border-bottom: 1px solid var(--border);
  box-sizing: border-box;
  color: var(--muted);
  display: flex;
  font-size: 0.72rem;
  font-weight: 700;
  height: 28px;
  letter-spacing: 0.04em;
  padding: 0 0.6rem;
  text-transform: uppercase;
}

.rows-viewport {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.rows-inner {
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
}

.trace-row {
  align-items: center;
  border-bottom: 1px solid var(--wave-grid);
  box-sizing: border-box;
  display: flex;
  font-size: 0.8rem;
  gap: 0.3rem;
  height: var(--row-h);
  overflow: hidden;
  padding: 0 0.5rem;
  user-select: none;
  white-space: nowrap;
}

.names-col .trace-row {
  cursor: grab;
}

.trace-row.selected {
  background-color: var(--wave-select);
}

.trace-row.drop-before {
  box-shadow: inset 0 2px 0 var(--primary);
}

.trace-row.drop-after {
  box-shadow: inset 0 -2px 0 var(--primary);
}

.trace-name {
  font-family: var(--mono);
  overflow: hidden;
  text-overflow: ellipsis;
}

.trace-scope {
  color: var(--muted);
}

.trace-row.is-label .trace-name {
  color: var(--primary);
  font-family: inherit;
  font-style: italic;
  font-weight: 600;
}

.trace-row.is-group .trace-name {
  font-family: inherit;
  font-weight: 700;
}

.trace-row.is-missing .trace-name {
  color: var(--muted);
  text-decoration: line-through;
}

.group-caret {
  color: var(--muted);
  cursor: pointer;
  width: 0.9rem;
}

.warn-badge {
  color: var(--wave-z);
  cursor: help;
  font-weight: 700;
}

.radix-badge {
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  color: var(--muted);
  font-size: 0.62rem;
  margin-left: auto;
  padding: 0 0.2rem;
}

.values-col .trace-row {
  font-family: var(--mono);
  justify-content: flex-end;
}

.indent-1 {
  padding-left: 1.4rem;
}

.indent-2 {
  padding-left: 2.3rem;
}

.indent-3 {
  padding-left: 3.2rem;
}

.wave-col {
  flex: 1;
  min-width: 0;
  position: relative;
}

.wave-canvas {
  cursor: crosshair;
  display: block;
  height: 100%;
  outline: none;
  width: 100%;
}

.v-scroll {
  bottom: 0;
  overflow-y: auto;
  position: absolute;
  right: 0;
  top: 28px;
  width: 12px;
}

.v-scroll > div {
  width: 1px;
}

.h-scroll {
  accent-color: var(--primary);
  margin: 0;
  width: 100%;
}

/* ------------------------------------------------------- Drop / loading */
.drop-zone {
  align-items: center;
  background-color: var(--bg);
  display: flex;
  inset: 0;
  justify-content: center;
  position: absolute;
  z-index: 5;
}

.drop-zone.hidden {
  display: none;
}

.drop-zone.drag-over,
.wv-workspace.drag-over .wv-main {
  outline: 3px dashed var(--primary);
  outline-offset: -10px;
}

.drop-card {
  color: var(--muted);
  max-width: 28rem;
  padding: 2rem;
  text-align: center;
}

.drop-card svg {
  color: var(--primary);
}

.drop-card h2 {
  color: var(--text);
  margin: 0.75rem 0 0.5rem;
}

.drop-card p {
  font-size: 0.9rem;
  line-height: 1.5;
}

.drop-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.25rem;
}

.loading-overlay {
  align-items: center;
  background-color: rgba(0, 0, 0, 0.25);
  display: flex;
  inset: 0;
  justify-content: center;
  position: absolute;
  z-index: 20;
}

.loading-overlay.hidden {
  display: none;
}

.loading-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  display: flex;
  flex-direction: column;
  font-size: 0.9rem;
  gap: 0.75rem;
  min-width: 16rem;
  padding: 1.25rem 1.5rem;
}

.progress {
  background-color: var(--bg-muted);
  border-radius: 999px;
  height: 6px;
  overflow: hidden;
}

.progress-bar {
  background-color: var(--primary);
  height: 100%;
  transition: width 0.1s;
  width: 0;
}

/* ------------------------------------------------------------ Status bar */
.wv-status {
  align-items: center;
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  font-size: 0.78rem;
  gap: 1.25rem;
  padding: 0.35rem 1rem;
}

.status-times {
  font-family: var(--mono);
  margin-left: auto;
}

.status-times .t-cursor {
  color: var(--wave-cursor);
  font-weight: 700;
}

.status-times .t-marker {
  color: var(--wave-marker);
  font-weight: 700;
}

.status-warn {
  background: none;
  border: 1px solid var(--wave-z);
  border-radius: 999px;
  color: var(--wave-z);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.1rem 0.6rem;
}

.status-warn.hidden {
  display: none;
}

/* --------------------------------------------------------------- Dialogs */
.dialog {
  background-color: var(--surface);
  color: var(--text);
}

.dialog-wide {
  max-width: 560px;
}

.dialog-text {
  color: var(--muted);
  line-height: 1.5;
}

.dialog-actions-split {
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.color-section {
  border-top: 1px solid var(--border);
  margin-top: 1rem;
  padding-top: 0.85rem;
}

.color-section.hidden {
  display: none;
}

.color-head {
  align-items: center;
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.color-preview {
  border: 1px solid var(--border);
  border-radius: 50%;
  height: 1rem;
  width: 1rem;
}

.color-value {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.color-swatch {
  border: 2px solid var(--surface);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--border);
  cursor: pointer;
  height: 1.75rem;
  padding: 0;
  width: 1.75rem;
}

.color-swatch:hover {
  box-shadow: 0 0 0 1px var(--primary);
}

.color-swatch.active {
  box-shadow: 0 0 0 2px var(--text);
}

.swatch-default {
  background: linear-gradient(135deg, var(--wave-bit) 50%, var(--wave-vec) 50%);
}

.color-dot {
  border-radius: 50%;
  flex: none;
  height: 0.55rem;
  width: 0.55rem;
}

.warnings-list {
  line-height: 1.6;
  margin: 0 0 1.5rem;
  max-height: 50vh;
  overflow: auto;
  padding-left: 1.2rem;
}

.help-table {
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
  width: 100%;
}

.help-table th {
  color: var(--muted);
  font-weight: 600;
  padding: 0.3rem 1rem 0.3rem 0;
  text-align: left;
  vertical-align: top;
  white-space: nowrap;
}

.help-table td {
  padding: 0.3rem 0;
}

kbd {
  background-color: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  padding: 0 0.3rem;
}

.toast {
  background-color: var(--text);
  border-radius: 0.5rem;
  bottom: 3rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  color: var(--surface);
  font-size: 0.85rem;
  left: 50%;
  max-width: 36rem;
  padding: 0.6rem 1rem;
  position: fixed;
  transform: translateX(-50%);
  z-index: 200;
}

.toast.hidden {
  display: none;
}

.toast.error {
  background-color: var(--wave-x);
  color: #ffffff;
}

@media (max-width: 760px) {
  .sidebar-resizer,
  .wv-sidebar {
    display: none;
  }

  .names-col {
    width: 150px;
  }

  .values-col {
    width: 80px;
  }
}