/**
 * ONA Visual Lab — lab.css
 * BEM component styles. All values reference tokens.css custom properties.
 * Class convention: .ona-{block}__{element}--{modifier}
 *
 * @version 0.2
 * @requires tokens.css
 */

/* ── Reset ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  overflow: hidden;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 13px;
  background: var(--color-bg);
  color: var(--color-text);
}

button { font: inherit; cursor: pointer; border: none; background: none; }
select, input { font: inherit; color: var(--color-text); }

/* ── Scrollbar ───────────────────────────────────────────────────────────────── */
::-webkit-scrollbar       { width: 5px; }
::-webkit-scrollbar-track  { background: transparent; }
::-webkit-scrollbar-thumb  { background: var(--color-border); border-radius: 3px; }

/* ── Utility ─────────────────────────────────────────────────────────────────── */
.ona-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2px 0;
}

.ona-empty {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  text-align: center;
  padding: var(--space-3) 0;
}

/* ── Spinner ─────────────────────────────────────────────────────────────────── */
.ona-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: ona-spin 0.8s linear infinite;
}

@keyframes ona-spin { to { transform: rotate(360deg); } }

/* ── Button ──────────────────────────────────────────────────────────────────── */
.ona-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: background 0.15s;
  cursor: pointer;
  border: none;
}

.ona-btn--primary {
  background: var(--color-accent);
  color: #fff;
}
.ona-btn--primary:hover { background: var(--color-accent-hover); }

.ona-btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.ona-btn--ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.ona-btn--full { width: 100%; justify-content: center; }

/* ── App shell ───────────────────────────────────────────────────────────────── */
.ona-app {
  display: grid;
  grid-template-rows: var(--ona-topbar-h) 1fr;
  grid-template-columns: auto 1fr;
  height: 100vh;
}

/* ── Topbar ──────────────────────────────────────────────────────────────────── */
.ona-topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0 var(--space-5);
  background: var(--color-bg-panel);
  border-bottom: 1px solid var(--color-border);
  z-index: 10;
}

.ona-topbar__logo {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text);
  text-transform: uppercase;
}

.ona-topbar__badge {
  font-size: var(--text-xs);
  background: var(--color-accent);
  color: #fff;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.ona-topbar__select {
  margin-left: auto;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  color: var(--color-text);
  font-size: var(--text-sm);
  cursor: pointer;
}

.ona-topbar__stat {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.ona-topbar__stat strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ── Sidebar ─────────────────────────────────────────────────────────────────── */
.ona-sidebar {
  position: relative;
  width: var(--ona-sidebar-w);
  min-width: 0;
  flex-shrink: 0;
  background: var(--color-bg-panel);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: width var(--motion-panel) ease;
}

.ona-sidebar__section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.ona-sidebar__section-title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-muted);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--color-border);
}

.ona-sidebar__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: 2px;
  display: block;
}

.ona-sidebar__select,
.ona-sidebar__input {
  width: 100%;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
  font-size: var(--text-sm);
  color: var(--color-text);
  appearance: none;
}

.ona-sidebar__select:focus,
.ona-sidebar__input:focus {
  outline: none;
  border-color: var(--color-border-focus);
}

/* Range slider */
.ona-sidebar__range-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.ona-sidebar__range {
  flex: 1;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.ona-sidebar__range-val {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  min-width: 28px;
  text-align: right;
}

/* Toggle */
.ona-sidebar__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.ona-sidebar__toggle input[type="checkbox"] {
  width: 32px;
  height: 17px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.ona-sidebar__toggle span {
  font-size: var(--text-sm);
  color: var(--color-text);
}

/* ── Search ──────────────────────────────────────────────────────────────────── */
.ona-search {
  position: relative;
}

.ona-search__input {
  width: 100%;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 5px 8px 5px 26px;
  font-size: var(--text-sm);
  color: var(--color-text);
}

.ona-search__input:focus {
  outline: none;
  border-color: var(--color-border-focus);
}

.ona-search::before {
  content: '⌕';
  position: absolute;
  left: 7px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

/* ── Filter ──────────────────────────────────────────────────────────────────── */
.ona-filter__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.ona-filter__tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-xs);
  padding: 2px 7px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.ona-filter__tag--active {
  border-color: var(--color-accent);
  color: var(--color-text);
  background: rgba(79, 110, 247, 0.12);
}

.ona-filter__tag-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

/* ── Legend ──────────────────────────────────────────────────────────────────── */
.ona-legend {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ona-legend__item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.ona-legend__item--clickable {
  cursor: pointer;
  border-radius: var(--radius-sm);
  padding: 2px 4px;
  margin: -2px -4px;
  transition: background 0.12s, opacity 0.15s;
}

.ona-legend__item--clickable:hover { background: var(--color-bg-elevated); }

.ona-legend__item--dimmed { opacity: 0.3; }

.ona-legend__swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.ona-legend__gradient {
  width: 100%;
  height: 8px;
  border-radius: 3px;
}

.ona-legend__gradient-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.ona-legend__item-off {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-left: auto;
  padding-left: 4px;
}

.ona-legend__item-pct {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-left: auto;
  padding-left: 4px;
  font-variant-numeric: tabular-nums;
  min-width: 30px;
  text-align: right;
}

.ona-legend__hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
  padding: 4px 0 2px;
  opacity: 0.7;
}

/* ── Metrics grid ────────────────────────────────────────────────────────────── */
.ona-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.ona-metrics__card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
}

.ona-metrics__card-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.ona-metrics__card-value {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

/* ── Lens switcher ───────────────────────────────────────────────────────────── */
.ona-lens-switcher {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.ona-lens-switcher--compact { gap: 3px; }

.ona-lens-btn {
  flex: 1;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 500;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  text-align: center;
}

.ona-lens-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.ona-lens-btn--active {
  background: rgba(79, 110, 247, 0.15);
  border-color: var(--color-accent);
  color: var(--color-text);
  font-weight: 600;
}

/* ── Lens badge (canvas overlay) ─────────────────────────────────────────────── */
.ona-lens-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  background: rgba(251, 191, 36, 0.15);
  border: 1px solid rgba(251, 191, 36, 0.4);
  color: var(--color-warning);
  letter-spacing: 0.02em;
  pointer-events: none;
}

/* ── Canvas area ─────────────────────────────────────────────────────────────── */
.ona-canvas {
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
}

.ona-canvas__sigma {
  width: 100%;
  height: 100%;
  position: relative;
}

.ona-canvas__loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  background: rgba(15, 17, 23, 0.85);
  z-index: 20;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.ona-canvas__controls {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  gap: 6px;
  z-index: 15;
}

/* ── Node info panel ─────────────────────────────────────────────────────────── */
.ona-node-info {
  position: absolute;
  bottom: 16px;
  right: 16px;
  width: 240px;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  z-index: 15;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.ona-node-info__title {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.ona-node-info__row {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  padding: 2px 0;
  border-bottom: 1px solid var(--color-border);
}

.ona-node-info__row:last-child { border-bottom: none; }

.ona-node-info__key { color: var(--color-text-muted); }

.ona-node-info__val {
  color: var(--color-text);
  font-weight: 500;
  max-width: 130px;
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Cockpit ─────────────────────────────────────────────────────────────────── */
body.ona-cockpit-mode {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.ona-cockpit-topbar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0 var(--space-5);
  height: var(--ona-topbar-h);
  background: var(--color-bg-panel);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  z-index: 10;
}

.ona-cockpit-grid {
  flex: 1;
  display: grid;
  overflow: hidden;
  min-height: 0;
}

.ona-cockpit-grid--split-horizontal {
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--color-border);
}

.ona-cockpit-grid--split-vertical {
  grid-template-rows: 1fr 1fr;
  gap: 1px;
  background: var(--color-border);
}

.ona-cockpit-grid--3col {
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: var(--color-border);
}

.ona-cockpit-panel {
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

.ona-cockpit-panel__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 6px 12px;
  background: var(--color-bg-panel);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.ona-cockpit-panel__title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.ona-cockpit-panel__body {
  flex: 1;
  display: grid;
  grid-template-columns: var(--ona-cockpit-sidebar-w) 1fr;
  overflow: hidden;
  min-height: 0;
}

.ona-cockpit-sidebar {
  background: var(--color-bg-panel);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ona-cockpit-canvas {
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
}

.ona-cockpit-sigma {
  width: 100%;
  height: 100%;
  position: relative;
}

.ona-cockpit-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  background: rgba(15, 17, 23, 0.85);
  z-index: 20;
}

.ona-cockpit-node-badge {
  position: absolute;
  bottom: 8px;
  left: 8px;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: var(--text-xs);
  color: var(--color-accent);
  font-weight: 600;
  z-index: 15;
}

/* ── Tooltip ─────────────────────────────────────────────────────────────────── */
.ona-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--tooltip-bg);
  border: 1px solid var(--tooltip-border);
  border-radius: var(--tooltip-radius);
  padding: 6px 10px;
  box-shadow: var(--tooltip-shadow);
  z-index: 30;
  max-width: 210px;
  white-space: nowrap;
}

.ona-tooltip__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 3px;
}

.ona-tooltip__row {
  display: flex;
  gap: 6px;
  font-size: var(--text-xs);
}

.ona-tooltip__key { color: var(--color-text-muted); flex-shrink: 0; }
.ona-tooltip__val { color: var(--color-text); }

/* ── Toast stack ─────────────────────────────────────────────────────────────── */
.ona-toast-stack {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 6px;
  pointer-events: none;
  align-items: center;
}

.ona-toast {
  background: var(--toast-bg);
  color: var(--color-text);
  border: 1px solid var(--toast-border);
  border-radius: var(--radius-md);
  padding: 7px 16px;
  font-size: var(--text-sm);
  font-weight: 500;
  box-shadow: 0 4px 14px rgba(0,0,0,0.35);
  white-space: nowrap;
}

.ona-toast--success { border-color: var(--color-success); color: var(--color-success); }
.ona-toast--info    { border-color: var(--color-border); }

/* ── Lens flash overlay ──────────────────────────────────────────────────────── */
.ona-canvas__lens-flash {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--color-accent);
  opacity: 0.06;
  z-index: 5;
}

/* ── Sidebar — collapse ──────────────────────────────────────────────────────── */
.ona-sidebar__collapse-btn {
  position: absolute;
  top: 10px;
  right: 8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  font-size: 0.65rem;
  line-height: 1;
  transition: color 0.12s, border-color 0.12s;
}

.ona-sidebar__collapse-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.ona-sidebar--collapsed {
  width: var(--ona-sidebar-w-collapsed);
}

/* In collapsed state, hide all content except the collapse button */
.ona-sidebar--collapsed > *:not(.ona-sidebar__collapse-btn) {
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--motion-panel) ease;
}

/* ── Sidebar — focus mode (node selected) ────────────────────────────────────── */
.ona-sidebar__back-btn {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: 3px 6px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  background: none;
  border: 1px solid var(--color-border);
  transition: color 0.12s;
  margin-bottom: 2px;
}

.ona-sidebar__back-btn:hover { color: var(--color-text); }

/* Collapsible sections compress in focus mode */
.ona-sidebar__section--collapsible {
  max-height: 500px;
  overflow: hidden;
  transition: max-height var(--motion-panel) ease,
              opacity var(--motion-panel) ease,
              margin var(--motion-panel) ease;
}

.ona-sidebar--focus .ona-sidebar__section--collapsible {
  max-height: 0;
  opacity: 0;
  margin: 0;
}

/* ── Reduced motion ──────────────────────────────────────────────────────────── */
.ona-reduced-motion *,
.ona-reduced-motion *::before,
.ona-reduced-motion *::after {
  transition-duration: 0ms !important;
  animation-duration:  0ms !important;
}