/* ── profpi — Neural Network Explorer (tool page) ── */
/* Expects tokens.css + home.css (shared header/nav/footer) loaded first,
   same as every other /tools/ page. Every color/radius/shadow below falls
   back to profpi's home.css values via var(--x, fallback) so this file is
   still legible if loaded on its own. */

.tool-hero {
  max-width: 1140px;
  margin: 0 auto;
  padding: 48px 24px 8px;
}


/* Fullscreen Canvas */
.canvas-wrap {
  position: relative;
}
.fullscreen-toggle {
  position: relative;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--card-bg, #ffffff);
  border: 1px solid var(--border-color, #e2e8f0);
  color: var(--text-muted, #64748b);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
  transition: all 0.2s;
  z-index: 10;
}
.canvas-wrap:hover .fullscreen-toggle {
  opacity: 1;
}
.fullscreen-toggle:hover {
  color: var(--accent, #6366f1);
  border-color: var(--accent, #6366f1);
}
.canvas-wrap.is-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  background: var(--bg-space, #f8fafc);
  margin: 0;
  border-radius: 0;
  border: none;
  padding: 40px;
  display: flex;
  flex-direction: column;
}
.canvas-wrap.is-fullscreen .canvas-stage {
  flex: 1;
  min-height: 0;
  margin-top: 20px;
}
.canvas-wrap.is-fullscreen canvas {
  width: auto;
  height: 100%;
  max-width: 100%;
  object-fit: contain;
}


.tool-hero .eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent, #6366f1);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.tool-hero h1 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin-bottom: 14px;
}

.tool-hero p {
  font-size: 1rem;
  color: var(--text-muted, #64748b);
  line-height: 1.65;
  max-width: 780px;
}

/* ── Tool layout ── */
.tool-section {
  max-width: 1140px;
  margin: 0 auto;
  padding: 24px 24px 56px;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  align-items: start;
}

.control-panel {
  background: var(--card-bg, #ffffff);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: var(--radius-lg, 16px);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: sticky;
  top: 88px;
}

.control-panel .field-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.control-panel label,
.control-panel .field-group-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main, #0f172a);
}

.control-panel .field-hint {
  font-size: 0.78rem;
  color: var(--text-muted, #64748b);
  line-height: 1.5;
}

.control-panel input[type="range"] {
  width: 100%;
  accent-color: var(--accent, #6366f1);
}

.control-panel select {
  width: 100%;
  font-size: 0.86rem;
  padding: 8px 10px;
  border-radius: var(--radius-md, 10px);
  border: 1px solid var(--border-color, #e2e8f0);
  background: var(--card-bg, #ffffff);
  color: var(--text-main, #0f172a);
}

.range-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.range-row .range-value {
  font-variant-numeric: tabular-nums;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent, #6366f1);
  min-width: 2.8em;
  text-align: right;
}

/* ── Dataset chips ── */
.preset-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preset-chip {
  border: 1px solid var(--border-color, #e2e8f0);
  background: var(--card-active, #eef2ff);
  color: var(--text-main, #0f172a);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.preset-chip:hover {
  border-color: var(--accent, #6366f1);
  color: var(--accent, #6366f1);
}

.preset-chip.is-active {
  background: var(--accent, #6366f1);
  border-color: var(--accent, #6366f1);
  color: #fff;
}

/* ── Architecture editor ── */
.layer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: var(--radius-md, 10px);
  padding: 6px 8px 6px 12px;
  background: var(--bg-space, #f8fafc);
}

.layer-row + .layer-row {
  margin-top: 6px;
}

.layer-row-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main, #0f172a);
}

.stepper {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stepper-btn {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-md, 10px);
  border: 1px solid var(--border-color, #e2e8f0);
  background: var(--card-bg, #ffffff);
  color: var(--text-main, #0f172a);
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.stepper-btn:hover {
  border-color: var(--accent, #6366f1);
  color: var(--accent, #6366f1);
}

.stepper-value {
  min-width: 1.4em;
  text-align: center;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 0.86rem;
}

.layer-remove {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-md, 10px);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted, #64748b);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.layer-remove:hover:not(:disabled) {
  color: var(--danger, #ef4444);
  border-color: rgba(239, 68, 68, 0.3);
}

.layer-remove:disabled {
  opacity: 0.3;
  cursor: default;
}

.add-layer-btn {
  margin-top: 8px;
  width: 100%;
}

/* ── Checkbox row ── */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.checkbox-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent, #6366f1);
}

.checkbox-row label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main, #0f172a);
  cursor: pointer;
}

/* ── Shared buttons ── */
.btn-panel {
  border: 1px solid var(--border-color, #e2e8f0);
  background: var(--card-bg, #ffffff);
  color: var(--text-main, #0f172a);
  font-weight: 700;
  font-size: 0.86rem;
  padding: 10px 14px;
  border-radius: var(--radius-md, 10px);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn-panel:hover {
  border-color: var(--accent, #6366f1);
  color: var(--accent, #6366f1);
}

.btn-panel-primary {
  background: var(--accent, #6366f1);
  border-color: var(--accent, #6366f1);
  color: #fff;
}

.btn-panel-primary:hover {
  background: var(--accent-hover, #4f46e5);
  color: #fff;
}

.playback-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.playback-row .btn-panel {
  flex: 1 1 0%;
}

.fidelity-badge {
  font-size: 0.78rem;
  color: var(--text-muted, #64748b);
  background: var(--bg-space, #f8fafc);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: var(--radius-md, 10px);
  padding: 8px 10px;
  line-height: 1.5;
}

.fidelity-badge strong {
  color: var(--text-main, #0f172a);
  font-variant-numeric: tabular-nums;
}

.error-banner {
  font-size: 0.82rem;
  color: var(--danger, #ef4444);
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-md, 10px);
  padding: 10px 12px;
  line-height: 1.5;
}

.error-banner.is-hidden {
  display: none;
}

/* ── Canvas area ── */
.canvas-column {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.canvas-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 18px;
  align-items: start;
}

.canvas-wrap {
  background: var(--card-bg, #ffffff);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: var(--radius-lg, 16px);
  box-shadow: var(--shadow-lg, 0 12px 24px rgba(0, 0, 0, 0.06));
  padding: 16px;
}

.canvas-wrap h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.canvas-wrap p.field-hint {
  margin-bottom: 10px;
}

.canvas-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md, 10px);
  overflow: hidden;
  background: var(--bg-space, #f8fafc);
  cursor: crosshair;
}

.network-stage {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md, 10px);
  background: var(--bg-space, #f8fafc);
  cursor: pointer;
}

.canvas-stage canvas,
.network-stage {
  display: block;
}

.canvas-stage canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.canvas-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 10px 4px 2px;
}

.legend-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted, #64748b);
}

.legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  display: inline-block;
}

/* ── Probe inspector ── */
.probe-panel {
  background: var(--card-bg, #ffffff);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: var(--radius-lg, 16px);
  padding: 16px;
}

.probe-panel h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

#probeStatus {
  font-size: 0.82rem;
  color: var(--text-muted, #64748b);
  margin-bottom: 12px;
}

#probeStatus strong {
  color: var(--text-main, #0f172a);
}

.probe-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
  font-size: 0.84rem;
  border-bottom: 1px dashed var(--border-color, #e2e8f0);
}

.probe-row span {
  color: var(--text-muted, #64748b);
}

.probe-row strong {
  font-variant-numeric: tabular-nums;
  color: var(--text-main, #0f172a);
  text-align: right;
}

.probe-divider {
  height: 1px;
  background: var(--border-color, #e2e8f0);
  margin: 10px 0;
}

.probe-weights-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted, #64748b);
  margin: 10px 0 6px;
}

.probe-weights-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 6px;
}

.probe-weight-item {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  font-size: 0.78rem;
  background: var(--bg-space, #f8fafc);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: 8px;
  padding: 4px 8px;
}

.probe-weight-item strong {
  font-variant-numeric: tabular-nums;
}

.probe-hint {
  font-size: 0.8rem;
  color: var(--text-muted, #64748b);
  line-height: 1.55;
  padding-top: 6px;
}

/* ── Loss chart ── */
.spectrum-panel {
  background: var(--card-bg, #ffffff);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: var(--radius-lg, 16px);
  padding: 16px;
}

.spectrum-panel h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.spectrum-panel p.field-hint {
  margin-bottom: 10px;
}

.spectrum-stage {
  width: 100%;
  aspect-ratio: 5 / 1.4;
  min-height: 110px;
  display: block;
}

/* ── Explainer / trust cards ── */
.tool-explainer {
  max-width: 1140px;
  margin: 0 auto;
  padding: 8px 24px 56px;
}

.tool-explainer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.tool-explainer-card {
  background: var(--card-bg, #ffffff);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: var(--radius-lg, 16px);
  padding: 20px;
}

.tool-explainer-card h3 {
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.tool-explainer-card p {
  font-size: 0.86rem;
  color: var(--text-muted, #64748b);
  line-height: 1.6;
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .tool-section {
    grid-template-columns: 1fr;
  }

  .control-panel {
    position: static;
  }

  .canvas-row {
    grid-template-columns: 1fr;
  }

  .tool-explainer-grid {
    grid-template-columns: 1fr;
  }
}

.canvas-stage {
  position: relative;
}
.canvas-wrap.is-fullscreen .canvas-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}
.canvas-wrap.is-fullscreen .canvas-stage canvas,
.canvas-wrap.is-fullscreen .canvas-stage #networkStage {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  margin: 0 auto;
}

/* Hide header text on fullscreen zoom */

.canvas-wrap.is-fullscreen > div:first-child > div:first-child {
  display: none !important;
}
.canvas-wrap.is-fullscreen > div:first-child {
  margin-bottom: 0 !important;
  justify-content: flex-end !important;
}


/* Disable transition on canvases while in fullscreen so they snap instantly and avoid resize glitches */
.canvas-wrap.is-fullscreen canvas {
  transition: none !important;
}





/* Global helper class to hide elements */
.is-hidden {
  display: none !important;
}