/*
 * peartree.css — Tree-specific styles for PearTree
 *
 * Requires pearcore/css/pearcore.css to be loaded first (provides design
 * tokens, toolbar shell, modal system, palette infrastructure, etc.).
 */

/* ── Reroot / select-mode controls ── */
/* Hidden until an unrooted tree is loaded.
   display:contents is used when visible so the children participate in the
   parent flex layout directly (no wrapping box). CSS class avoids the
   WKWebView inline-style reliability issue. */
#reroot-controls { display: none; }
#reroot-controls.visible { display: contents; }

/* ── User-colour picker (toolbar) ── */
.pt-colour-pick-wrap {  
  display: flex;
  align-items: center;
  gap: 3px;
  position: relative;
}
/* Colour trigger button: shows the current colour as a swatch */
#btn-colour-trigger {
  width: 26px;
  height: 26px;
  padding: 2px;
  border: 1px solid var(--pt-border-input);
  border-radius: 4px;
  background: var(--pt-surface-input);
  cursor: pointer;
  flex-shrink: 0;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
}
#btn-colour-trigger:hover:not(:disabled) { border-color: var(--pt-border-strong); }
#btn-colour-trigger:disabled { opacity: 0.2; pointer-events: none; cursor: default; }
#btn-colour-trigger-swatch {
  width: 16px;
  height: 16px;
  border-radius: 2px;
  background: #ff8800;
  pointer-events: none;
}
/* Hidden native colour input used only to open the OS colour dialog */
#btn-node-colour {
  position: absolute;
  width: 0; height: 0;
  opacity: 0;
  pointer-events: none;
}

/* ── Colour picker popup (toolbar) ── */
#colour-picker-popup {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 700;
  background: var(--pt-bg-panel);
  border: 1px solid var(--pt-border);
  border-radius: 6px;
  box-shadow: 0 6px 24px var(--pt-shadow-popup);
  padding: 10px;
  min-width: 220px;
}
#colour-picker-popup.open { display: block; }
#btn-colour-native-open {
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  padding: 2px;
  border: 1px solid var(--pt-border-input);
  border-radius: 4px;
  background: var(--pt-surface-input);
  cursor: pointer;
  flex-shrink: 0;
  box-sizing: border-box;
}
#btn-colour-native-open::-webkit-color-swatch-wrapper { padding: 2px; }
#btn-colour-native-open::-webkit-color-swatch { border: none; border-radius: 2px; }

/* ── RTT header buttons ── */
#rtt-header .btn {
  background: var(--pt-surface);
  padding: 0.02rem 0.18rem;
  font-size: 0.72rem;
  line-height: 1.2;
}
#rtt-header .btn:hover:not(:disabled) {
  background: var(--pt-surface-focus);
}
/* RTT stats toggle: keep outline style when active (gold tint, no fill) */
#rtt-btn-stats {
  --bs-btn-active-color: var(--pt-gold, #b5890a);
  --bs-btn-active-bg: transparent;
  --bs-btn-active-border-color: var(--pt-gold, #b5890a);
}
#rtt-header .btn:disabled,
#rtt-header .btn[disabled] {
  opacity: 0.2;
  pointer-events: none;
}

/* ── Canvas area ── */
#canvas-container {
  flex: 1;
  min-height: 0;        /* allow flex child to shrink below content height */
  position: relative;   /* positioning context for slide-out panels */
  display: flex;
  flex-direction: row;
  align-items: stretch;
  overflow: hidden;
}
#tree-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
  min-width: 0;
  margin: 0;
  padding: 0;
  /* Match the default canvas background so nothing flickers through before JS draws */
  background: var(--pt-bg-deepest);
}
#tree-scroll-y {
  position: absolute;
  right: 0;
  width: 8px;
  display: none;
  z-index: 10;
}
#tree-scroll-y-thumb {
  position: absolute;
  left: 1px;
  right: 1px;
  border-radius: 3px;
  background: rgba(128, 128, 128, 0.45);
  transition: background 0.15s;
  min-height: 20px;
}
#tree-scroll-y-thumb:hover,
#tree-scroll-y-thumb.dragging { background: rgba(128, 128, 128, 0.75); }
#axis-wrapper {
  flex-shrink: 0;
  overflow: hidden;
}
#axis-canvas {
  display: none;
  width: 100%;
  margin: 0;
  padding: 0;
  pointer-events: none;
}
canvas            { display: block; cursor: default; }
canvas.space      { cursor: grab; }
canvas.grabbing   { cursor: grabbing; }

/* ── Legend canvases (left / right of tree) ── */
.pt-legend-canvas {
  flex-shrink: 0;
  display: none;
  align-self: flex-start;   /* pin to top; height controlled via JS */
  cursor: default !important;
}

/* ── Empty state (no tree loaded) ── */
#empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 5;
  cursor: default;
  user-select: none;
  transition: background 0.15s;
}
#empty-state.drag-over {
  background: var(--pt-surface-row);
  outline: 2px dashed var(--pt-border);
  outline-offset: -12px;
}
#empty-state.hidden { display: none; }
.pt-empty-icon  { width: 96px; height: 96px; display: block; margin: 0 auto 1.2rem; border-radius: 18px; }
.pt-empty-title { font-size: 1rem; font-weight: 500; opacity: 0.55; margin-bottom: 0.35rem; }
.pt-empty-hint  { font-size: 0.8rem; opacity: 0.35; margin-bottom: 1.6rem; }

/* ── Error overlay ── */
#error {
  display: none;
  position: absolute;
  inset: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--pt-bg);
  gap: 10px;
  color: var(--pt-red);
  font-size: 0.875rem;
  padding: 40px;
  text-align: center;
}

/* ── Palette panel: tree-specific layout hooks ── */
#tree-axis-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: hidden;
  min-width: 0;
  position: relative;
  transition: padding-left 0.22s cubic-bezier(.4,0,.2,1),
              padding-right 0.22s cubic-bezier(.4,0,.2,1);
}
#legend-right-wrapper {
  display: none;
  flex-shrink: 0;
  flex-direction: row;
  overflow: hidden;
}
#selection-hover-section { display: none; }
#palette-panel.advanced #selection-hover-section { display: block; }
.pt-rtt-adv-row { display: none; }
#palette-panel.advanced .pt-rtt-adv-row { display: flex; }

/* ── Clade highlight list items ── */
.pt-highlight-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 2px 0;
}
.pt-highlight-swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
  border: 1px solid rgba(255,255,255,0.2);
}
.pt-highlight-name {
  font-size: 0.73rem;
  color: var(--pt-cream);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.pt-no-highlights {
  font-size: 0.68rem;
  color: rgba(242,241,230,0.35);
  font-style: italic;
}

/* ── Panel-toggle buttons — gold when open ── */
#btn-palette.active,
#btn-data-table.active,
#btn-rtt.active {
  color: var(--bs-primary);
  border-color: var(--bs-primary);
}
/* Flip carets when the panels are open */
#btn-palette .bi-caret-right,
#btn-data-table .bi-caret-left,
#btn-rtt .bi-caret-left {
  display: inline-block;
  transition: transform 0.22s cubic-bezier(.4,0,.2,1);
}
#btn-palette.active .bi-caret-right   { transform: scaleX(-1); }
#btn-data-table.active .bi-caret-left { transform: scaleX(-1); }
#btn-rtt.active .bi-caret-left        { transform: scaleX(-1); }
#btn-order-desc .bi-sort-up { display: inline-block; transform: scaleY(-1); }

/* ── Tooltip ── */
#tooltip {
  position: absolute;
  background: var(--pt-bg-dark);
  border: 1px solid var(--pt-border);
  border-radius: 4px;
  padding: 5px 10px;
  font-size: 0.63rem;
  color: var(--pt-off-white);
  pointer-events: none;
  display: none;
  max-width: 320px;
  word-break: break-all;
  z-index: 10;
  line-height: 1.6;
}

/* ── Node Info dialog ── */
#node-info-body { overflow-y: auto; max-height: 60vh; font-size: 0.78rem; font-family: monospace; }

/* ── Export Tree dialog ── */
.exp-section { margin-bottom: 0.85rem; }
.exp-section-label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bs-secondary-color);
  margin-bottom: 0.35rem;
}
.exp-radio-group { display: flex; flex-direction: column; gap: 0.3rem; }
.exp-radio-opt {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.86rem;
  cursor: pointer;
}
.exp-radio-opt.exp-disabled { opacity: 0.38; cursor: not-allowed; }

/* ── Export Graphic dialog ── */
.expg-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}
.expg-label {
  font-size: 0.82rem;
  color: var(--bs-secondary-color);
  min-width: 5rem;
  flex-shrink: 0;
}
.expg-input {
  flex: 1;
  background: var(--pt-surface-input);
  color: var(--pt-text);
  border: 1px solid var(--pt-border-input);
  border-radius: 0.25rem;
  padding: 0.2rem 0.5rem;
  font-size: 0.86rem;
  font-family: inherit;
}
.expg-input:focus { outline: none; border-color: var(--bs-primary); }
.expg-radios { display: flex; gap: 1rem; align-items: center; }
.expg-radio { display: flex; align-items: center; gap: 0.35rem; font-size: 0.86rem; cursor: pointer; }
.expg-dim-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.expg-dim-px {
  width: 90px;
  background: var(--pt-bg-deepest);
  color: var(--bs-body-color);
  border: 1px solid #235b62;
  border-radius: 0.25rem;
  padding: 0.2rem 0.5rem;
  font-size: 0.86rem;
  font-family: monospace;
}
.expg-dim-px:focus { outline: none; border-color: var(--bs-primary); }
#expg-png-opts { border-top: 1px solid #235b62; padding-top: 0.75rem; margin-top: 0.3rem; }
.expg-hint { font-size: 0.76rem; color: var(--bs-secondary-color); margin-top: 0.3rem; }

/* ── Data table panel ─────────────────────────────────────────────── */
/* Overlay mode (default): slides in from the right over the canvas  */
#data-table-panel {
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 300px;              /* JS sets computed content width        */
  background: var(--pt-bg-panel);
  border-left: 1px solid var(--pt-divider-panel);
  z-index: 12;
  display: flex;
  flex-direction: row;
  overflow: hidden;
  cursor: default;
  transform: translateX(100%);
  transition: transform 0.22s cubic-bezier(.4,0,.2,1),
              box-shadow  0.22s cubic-bezier(.4,0,.2,1);
}
#data-table-panel.open {
  transform: translateX(0);
  box-shadow: -4px 0 20px var(--pt-shadow-panel);
}
/* Pinned: keep panel visible; central frame shrinking is driven by
  --pt-side-right-w (stack manager) via #tree-axis-wrapper padding. */
#data-table-panel.pinned {
  transform: translateX(0) !important;
  box-shadow: none;
}

/* ── Frozen number column (left strip) ── */
#dt-num-col {
  flex: none;
  width: var(--dt-num-w, 52px);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--pt-divider);
  background: inherit;
  z-index: 2;
  flex-shrink: 0;
}
#dt-num-header {
  flex-shrink: 0;
  border-bottom: 1px solid var(--pt-divider);
}
/* Number cells inside the frozen strip */
#dt-num-body {
  flex: 1;
  position: relative;
  overflow: hidden;
}
.dt-num-cell {
  position: absolute;
  left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 6px;
  font-size: var(--dt-font-size, 0.72rem);
  font-family: var(--dt-cell-font-family, monospace);
  color: var(--pt-text-dim);
  border-bottom: 1px solid var(--pt-divider-micro);
  cursor: pointer;
  user-select: none;
}
.dt-num-cell.dt-row-selected { background: var(--pt-selection-bg); color: var(--pt-text-icon-hover); }
.dt-num-cell:not(.dt-row-selected):hover { background: var(--pt-surface-row); }

/* ── Scrollable data area (header + rows scroll together horizontally) ── */
#dt-scroll-area {
  flex: 1;
  overflow-x: auto;
  overflow-y: hidden;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
#dt-scroll-area::-webkit-scrollbar       { height: 5px; }
#dt-scroll-area::-webkit-scrollbar-track { background: var(--pt-scrollbar-track); }
#dt-scroll-area::-webkit-scrollbar-thumb { background: var(--pt-scrollbar-thumb); border-radius: 3px; }

/* Column-name header row */
.dt-header {
  flex-shrink: 0;
  height: 24px;
  display: flex;
  align-items: center;
  background: inherit;
  border-bottom: 1px solid var(--pt-divider);
  pointer-events: none;
}
.dt-header-name {
  flex: none;
  padding: 0 5px;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--pt-text-muted);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.dt-header-cell {
  flex: none;
  min-width: 48px;
  padding: 0 4px;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--pt-text-muted);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* Body: absolutely-placed rows; min-width drives the h-scroll bar */
.dt-body {
  flex: 1;
  position: relative;
  overflow: hidden;
}

/* Each tip row */
.dt-row {
  position: absolute;
  left: 0;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--pt-divider-micro);
  cursor: pointer;
}
.dt-row:not(.dt-row-selected):hover { background: var(--pt-surface-row); }

/* Selected row highlight */
.dt-row-selected { background: var(--pt-selection-bg) !important; }
.dt-row-selected .dt-name-cell input[type="text"] { color: var(--pt-text-bright); }
.dt-row-selected .dt-cell input[type="text"] { color: var(--pt-text-bright); }

/* Tip-name column */
.dt-name-cell {
  flex: none;
  height: 100%;
  display: flex;
  align-items: center;
  border-right: 1px solid var(--pt-divider-micro);
  cursor: pointer;
  overflow: hidden;
}
.dt-name-cell input[type="text"] {
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  color: var(--pt-text-subdued);
  font-size: var(--dt-font-size, 0.72rem);
  font-family: var(--dt-cell-font-family, monospace);
  padding: 0 5px;
  outline: none;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  cursor: pointer;  /* overridden below when not readonly */
}
.dt-name-cell input[type="text"]:not([readonly]) { cursor: text; }
.dt-name-cell input[type="text"]:focus {
  background: var(--pt-selection-focus);
  color: var(--pt-text-bright);
  cursor: text;
}

/* Data-value columns */
.dt-cell {
  flex: none;
  min-width: 48px;
  height: 100%;
  display: flex;
  align-items: center;
}
.dt-cell input[type="text"] {
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  border-right: 1px solid var(--pt-divider-micro);
  color: var(--pt-text-bright);
  font-size: var(--dt-font-size, 0.72rem);
  font-family: var(--dt-cell-font-family, monospace);
  padding: 0 5px;
  outline: none;
  cursor: pointer;  /* overridden below when not readonly */
  transition: background 0.1s;
}
.dt-cell input[type="text"]:not([readonly]) { cursor: text; }
.dt-cell input[type="text"]:hover  { background: var(--pt-surface-row); }
.dt-cell input[type="text"]:focus  {
  background: var(--pt-selection-focus);
  color: var(--pt-text-bright);
  border-right-color: var(--pt-teal, #2aa198);
}

/* Resize handle — left edge; only interactive when pinned */
#data-table-resize-handle {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 8px;
  cursor: col-resize;
  z-index: 4;
  pointer-events: none;
}
#data-table-panel.pinned #data-table-resize-handle { pointer-events: auto; }
#data-table-resize-handle:hover,
#data-table-resize-handle:active { background: var(--pt-resize-hover); }

/* ── Root-to-tip divergence panel ─────────────────────────────────── */
#rtt-panel {
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: var(--rtt-panel-w, 380px);
  background: var(--pt-bg-panel);
  border-left: 1px solid var(--pt-divider-panel);
  z-index: 11;   /* below data-table when both visible */
  display: flex;
  flex-direction: column;
  overflow: hidden;
  cursor: default;
  transform: translateX(100%);
  transition: transform 0.22s cubic-bezier(.4,0,.2,1),
              box-shadow  0.22s cubic-bezier(.4,0,.2,1);
}
#rtt-panel.open {
  transform: translateX(0);
  box-shadow: -4px 0 20px var(--pt-shadow-panel);
}
/* Pinned: keep panel visible; central frame shrinking is driven by
  --pt-side-right-w (stack manager) via #tree-axis-wrapper padding. */
#rtt-panel.pinned {
  transform: translateX(0) !important;
  box-shadow: none;
}
/* Resize handle — left edge; interactive only when pinned */
#rtt-resize-handle {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 8px;
  cursor: col-resize;
  z-index: 4;
  pointer-events: none;
}
#rtt-panel.pinned #rtt-resize-handle { pointer-events: auto; }
#rtt-resize-handle:hover,
#rtt-resize-handle:active { background: var(--pt-resize-hover); }
/* Ghost divider shown during resize drag */
#rtt-resize-ghost {
  display: none;
  position: fixed;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--pt-accent, #19A699);
  opacity: 0.7;
  z-index: 9999;
  pointer-events: none;
}
#dt-resize-ghost {
  display: none;
  position: fixed;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--pt-accent, #19A699);
  opacity: 0.7;
  z-index: 9999;
  pointer-events: none;
}
/* Panel header */
#rtt-header {
  flex-shrink: 0;
  border-bottom: 1px solid var(--pt-divider);
}
.rtt-title {
  flex: 1;
  font-size: 0.78rem;
  color: var(--pt-text-accent-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
/* Canvas fills the remaining panel */
#rtt-canvas { flex: 1; display: block; min-height: 0; min-width: 0; }

/* ── Alt/Option hover node tooltip ─────────────────────────────────────────── */
#pt-node-tooltip {
  position: fixed;
  z-index: 9000;
  pointer-events: none;
  display: none;
  background: var(--pt-bg-panel);
  border: 1px solid var(--pt-divider);
  border-radius: 5px;
  padding: 7px 10px;
  min-width: 140px;
  max-width: 260px;
  box-shadow: 0 6px 20px var(--pt-shadow-popup);
  font-size: 0.8rem;
  color: var(--pt-text);
  line-height: 1.5;
}
#pt-node-tooltip.visible { display: block; }
.pt-tt-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--pt-text-bright);
  margin-bottom: 4px;
  border-bottom: 1px solid var(--pt-divider);
  padding-bottom: 3px;
  word-break: break-word;
}
.pt-tt-row {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
}
.pt-tt-label {
  color: var(--bs-secondary-color);
  white-space: nowrap;
}
.pt-tt-value {
  text-align: right;
  word-break: break-word;
}
.pt-tt-colour-swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  border: 1px solid rgba(255,255,255,0.2);
  vertical-align: middle;
  margin-right: 3px;
  flex-shrink: 0;
}

/* Axis range inputs — invalid state */
.pt-palette-select.is-invalid {
  border-color: #dc3545;
  box-shadow: 0 0 0 1px rgba(220,53,69,0.35);
}