:root {
  color-scheme: dark;
  font-family: "Inter", "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% 20%, #2d3f72, #101a33 65%);
  color: #f5f7ff;
  overflow: hidden;
}

body > canvas {
  position: fixed !important;
  inset: 0;
  width: 100vw !important;
  height: 100vh !important;
  z-index: 1 !important;
}

.overlay-2d {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 10;
  pointer-events: none;
}

.overlay-2d .container {
  pointer-events: auto;
  background: rgba(10, 16, 30, 0.88);
  border: 1px solid rgba(91, 160, 255, 0.35);
  border-radius: 18px;
  padding: 16px 18px;
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
}

.grid-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: stretch;
}

.grid-interaction-row {
  display: flex;
  align-items: stretch;
  gap: 12px;
}

.grid-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(173, 205, 255, 0.85);
}

.grid {
  display: grid;
  grid-template-columns: repeat(28, 1fr);
  gap: 1px;
  background: rgba(18, 26, 48, 0.85);
  border-radius: 12px;
  padding: 8px;
  box-shadow: inset 0 0 12px rgba(0, 0, 0, 0.55);
  touch-action: none;
}

.grid-cell {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.05);
  transition: background 120ms ease, transform 120ms ease;
}

.grid-cell:hover {
  transform: scale(1.15);
}

.grid-cell.active {
  box-shadow: 0 0 12px rgba(91, 160, 255, 0.65);
}

.digit-button-column {
  display: grid;
  grid-template-rows: repeat(10, 1fr);
  gap: 8px;
  width: 52px;
  height: 100%;
  margin-top: 12px;
  pointer-events: auto;
}

.digit-button {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(140deg, rgba(91, 160, 255, 0.9), rgba(59, 130, 246, 0.9));
  border: 1px solid rgba(91, 160, 255, 0.4);
  border-radius: 12px;
  color: #f8fbff;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.3);
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.2s ease;
}

.digit-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(59, 130, 246, 0.4);
}

.digit-button:active {
  transform: translateY(1px);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.35);
}

.reset-button-container {
  position: absolute;
  top: 330px;
  left: 24px;
  z-index: 12;
}

#resetBtn {
  pointer-events: auto;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #f8fbff;
  border: none;
  border-radius: 50%;
  width: 46px;
  height: 46px;
  font-size: 22px;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.35);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

#resetBtn:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(59, 130, 246, 0.45);
}

.prediction-overlay {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-end;
}

.prediction-container,
.network-info-panel {
  pointer-events: auto;
  min-width: 270px;
  max-width: 320px;
  background: rgba(10, 16, 30, 0.9);
  border-radius: 18px;
  border: 1px solid rgba(91, 160, 255, 0.35);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
}

.prediction-container {
  padding: 18px 20px;
}

.neuron-detail-panel {
  position: fixed;
  top: var(--neuron-panel-top, 416px);
  left: 16px;
  width: min(420px, calc(100vw - 32px));
  height: var(--neuron-panel-max-height, calc(100vh - var(--neuron-panel-top, 416px) - 24px));
  max-height: var(--neuron-panel-max-height, calc(100vh - var(--neuron-panel-top, 416px) - 24px));
  z-index: 12;
  pointer-events: none;
  display: none;
  transform: none;
  overflow: hidden;
}

.neuron-detail-panel.visible {
  display: block;
  pointer-events: auto;
}

.neuron-detail-panel__inner {
  pointer-events: auto;
  background: rgba(10, 16, 30, 0.92);
  border-radius: 20px;
  border: 1px solid rgba(91, 160, 255, 0.35);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(18px);
  padding: 18px 24px 20px;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: auto;
}

.neuron-detail-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.neuron-detail-panel__title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(173, 205, 255, 0.9);
}

.neuron-detail-panel__close {
  background: rgba(59, 130, 246, 0.2);
  border: 1px solid rgba(59, 130, 246, 0.45);
  color: rgba(227, 238, 255, 0.9);
  border-radius: 12px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.18s ease, transform 0.18s ease;
}

.neuron-detail-panel__close:hover {
  background: rgba(59, 130, 246, 0.35);
  transform: translateY(-1px);
}

.neuron-detail-panel__body {
  overflow-y: auto;
  padding-right: 6px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  flex: 1 1 auto;
}

.neuron-detail-panel__summary {
  font-size: 0.95rem;
  color: rgba(198, 212, 255, 0.86);
  line-height: 1.5;
  margin-bottom: 12px;
}

.neuron-detail-panel__totals {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.neuron-detail-panel__activations {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  font-size: 0.85rem;
  color: rgba(173, 205, 255, 0.8);
}

.neuron-detail-panel__activations span {
  background: rgba(24, 32, 56, 0.75);
  border-radius: 10px;
  padding: 6px 10px;
}

.neuron-detail-panel__section-title {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(173, 205, 255, 0.7);
  margin-bottom: 6px;
}

.neuron-detail-panel__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.neuron-detail-panel__row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 12px;
  background: rgba(24, 32, 56, 0.55);
  margin-bottom: 6px;
  align-items: center;
}

.neuron-detail-panel__row--header {
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(173, 205, 255, 0.7);
  background: rgba(24, 32, 56, 0.75);
}

.neuron-detail-panel__row strong {
  color: rgba(227, 238, 255, 0.92);
}

.neuron-detail-panel__row small {
  color: rgba(173, 205, 255, 0.65);
}

.neuron-detail-panel__row--total {
  background: rgba(34, 148, 103, 0.35);
  border: 1px solid rgba(34, 197, 94, 0.35);
}

.neuron-detail-panel__row--bias {
  background: rgba(49, 46, 129, 0.35);
  border: 1px solid rgba(129, 140, 248, 0.35);
}

.neuron-detail-panel__empty {
  padding: 16px 12px;
  font-size: 0.86rem;
  color: rgba(173, 205, 255, 0.75);
  background: rgba(24, 32, 56, 0.55);
  border-radius: 12px;
}

.prediction-container h3 {
  margin: 0 0 12px;
  font-size: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(173, 205, 255, 0.85);
  text-align: center;
}

.prediction-chart {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.prediction-bar-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.prediction-label {
  font-size: 0.85rem;
  font-weight: 600;
  width: 20px;
  text-align: right;
  color: rgba(198, 212, 255, 0.8);
}

.prediction-bar-track {
  flex: 1;
  height: 20px;
  background: rgba(18, 26, 48, 0.9);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(91, 160, 255, 0.25);
}

.prediction-bar {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(135deg, #0ea5e9, #3b82f6);
  box-shadow: 0 0 12px rgba(14, 165, 233, 0.45);
  transition: width 280ms ease;
}

.prediction-bar.highest {
  background: linear-gradient(135deg, #34d399, #10b981);
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.55);
}

.prediction-percentage {
  width: 62px;
  font-size: 0.85rem;
  color: rgba(173, 205, 255, 0.85);
  text-align: right;
}

.network-info-panel {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.network-info-panel__title {
  margin: 0;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(198, 212, 255, 0.9);
  text-align: center;
}

.network-info-panel__summary {
  display: grid;
  gap: 8px;
  font-size: 0.83rem;
  color: rgba(173, 205, 255, 0.78);
}

.network-info-panel__summary-line {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.network-info-panel__summary-line strong {
  font-weight: 600;
  color: rgba(227, 238, 255, 0.9);
}

.network-info-panel__layers {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.network-info-panel__layer {
  padding: 10px 12px;
  background: rgba(18, 26, 48, 0.9);
  border-radius: 12px;
  border: 1px solid rgba(91, 160, 255, 0.2);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.network-info-panel__layer-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: rgba(227, 238, 255, 0.9);
}

.network-info-panel__layer-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  font-size: 0.78rem;
  color: rgba(173, 205, 255, 0.72);
}

.network-info-panel__metric {
  display: inline-flex;
  gap: 4px;
  align-items: baseline;
}

.network-info-panel__metric-label {
  color: rgba(173, 205, 255, 0.6);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

.network-info-panel__empty {
  font-size: 0.82rem;
  color: rgba(173, 205, 255, 0.7);
  text-align: center;
  padding: 16px 12px;
  background: rgba(10, 16, 30, 0.65);
  border-radius: 12px;
  border: 1px dashed rgba(91, 160, 255, 0.35);
}

.instructions-overlay {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9;
  pointer-events: none;
}

.fps-overlay {
  position: absolute;
  bottom: 18px;
  left: 18px;
  z-index: 11;
  padding: 6px 12px;
  border-radius: 12px;
  background: rgba(10, 16, 30, 0.88);
  border: 1px solid rgba(91, 160, 255, 0.35);
  color: rgba(225, 235, 255, 0.9);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  font-weight: 600;
  text-transform: uppercase;
  pointer-events: none;
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.fps-overlay__value {
  display: inline-block;
  min-width: 56px;
  text-align: center;
}

.instructions-container {
  pointer-events: auto;
  background: rgba(8, 14, 28, 0.8);
  border-radius: 16px;
  padding: 16px 20px;
  border: 1px solid rgba(91, 160, 255, 0.25);
  backdrop-filter: blur(14px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.instructions-content p {
  margin: 4px 0;
  font-size: 0.9rem;
  color: rgba(214, 226, 255, 0.88);
}

.mobile-instructions-overlay {
  display: none;
}

.floating-controls {
  position: absolute;
  bottom: 24px;
  right: 24px;
  display: flex;
  gap: 14px;
  z-index: 11;
}

.floating-button {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(91, 160, 255, 0.35);
  background: rgba(14, 23, 40, 0.85);
  color: rgba(173, 205, 255, 0.88);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  padding: 0;
  backdrop-filter: blur(14px);
}

.floating-button span {
  pointer-events: none;
  font-size: 1.1rem;
}

.floating-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(91, 160, 255, 0.35);
}

.info-button {
  border-color: rgba(91, 160, 255, 0.35);
  color: rgba(173, 205, 255, 0.88);
}

.info-button span {
  font-size: 1.25rem;
}

.advanced-settings-button {
  border-color: rgba(91, 160, 255, 0.45);
  background: linear-gradient(135deg, rgba(16, 27, 48, 0.96), rgba(9, 15, 32, 0.92));
  color: rgba(180, 205, 255, 0.9);
}

.advanced-settings-button span {
  font-size: 1.3rem;
}

.timeline-overlay {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 14;
  pointer-events: none;
}

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

.timeline-container {
  pointer-events: auto;
  width: min(640px, calc(100vw - 64px));
  background: rgba(8, 14, 28, 0.9);
  border-radius: 18px;
  padding: 14px 18px 18px;
  border: 1px solid rgba(91, 160, 255, 0.35);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  color: rgba(214, 226, 255, 0.88);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.timeline-title {
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: rgba(173, 205, 255, 0.78);
}

.timeline-summary {
  font-weight: 600;
  font-size: 0.9rem;
  color: rgba(226, 235, 255, 0.92);
}

.timeline-slider {
  width: 100%;
  appearance: none;
  height: 6px;
  border-radius: 999px;
  background: rgba(18, 26, 48, 0.85);
  outline: none;
  transition: background 160ms ease;
}

.timeline-slider:focus-visible {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.35);
}

.timeline-slider::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  border: 1px solid rgba(91, 160, 255, 0.55);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.45);
  cursor: pointer;
}

.timeline-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  border: 1px solid rgba(91, 160, 255, 0.55);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.45);
  cursor: pointer;
}

.timeline-slider::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: rgba(18, 26, 48, 0.85);
}

.timeline-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  font-size: 0.82rem;
  color: rgba(198, 212, 255, 0.85);
}

.timeline-label {
  font-weight: 600;
  color: rgba(226, 235, 255, 0.92);
}

.timeline-metrics {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: rgba(173, 205, 255, 0.78);
}

.timeline-metrics--empty {
  opacity: 0.6;
}

.info-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 10, 22, 0.7);
  backdrop-filter: blur(12px);
  z-index: 20;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
  padding: 24px;
}

.info-modal.visible {
  opacity: 1;
  pointer-events: auto;
}

.info-modal-content {
  max-width: 720px;
  width: 100%;
  background: radial-gradient(circle at top left, rgba(36, 54, 94, 0.95), rgba(10, 16, 30, 0.95));
  border: 1px solid rgba(91, 160, 255, 0.35);
  border-radius: 24px;
  padding: 24px 28px;
  box-shadow: 0 24px 55px rgba(0, 0, 0, 0.55);
  color: #f5f7ff;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: 90vh;
  overflow-y: auto;
}

.info-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.info-modal-header h3 {
  margin: 0;
  font-size: 1.3rem;
  letter-spacing: 0.02em;
}

.close-modal-btn {
  background: none;
  border: none;
  color: rgba(173, 205, 255, 0.75);
  font-size: 1.6rem;
  cursor: pointer;
  transition: color 120ms ease;
}

.close-modal-btn:hover {
  color: #f5f7ff;
}

.info-modal-body h4 {
  margin: 12px 0 8px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: rgba(173, 205, 255, 0.75);
}

.info-modal-body p,
.info-modal-body li {
  color: rgba(226, 235, 255, 0.88);
  line-height: 1.55;
  font-size: 0.95rem;
}

.advanced-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  background: transparent;
  z-index: 22;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
  padding: 24px;
  padding-bottom: calc(24px + 46px + 12px);
}

.advanced-modal.visible {
  opacity: 1;
  pointer-events: auto;
}

.advanced-modal-content {
  width: min(360px, 90vw);
  background: radial-gradient(circle at top right, rgba(30, 45, 82, 0.97), rgba(10, 16, 30, 0.95));
  border: 1px solid rgba(91, 160, 255, 0.32);
  border-radius: 22px;
  padding: 22px 24px;
  box-shadow: 0 24px 55px rgba(0, 0, 0, 0.55);
  color: #f5f7ff;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.advanced-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.advanced-modal-header h3 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: 0.03em;
}

.advanced-modal-body {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.advanced-control {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.advanced-label {
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(173, 205, 255, 0.78);
}

.advanced-slider {
  display: flex;
  align-items: center;
  gap: 12px;
}

#connectionLimitSlider {
  flex: 1;
  accent-color: #3b82f6;
}

.advanced-value {
  min-width: 42px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: rgba(226, 235, 255, 0.92);
}

.advanced-hint {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.5;
  color: rgba(198, 212, 255, 0.78);
}

.info-modal-body ul {
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.mnist-images-container {
  display: none;
}

.error-text {
  margin: 0;
  padding: 12px 0;
  text-align: center;
  color: #fcd34d;
  font-size: 0.95rem;
}

.github-link {
  position: fixed;
  bottom: 4px;
  right: 12px;
  z-index: 24;
  font-size: 0.58rem;
  letter-spacing: 0.005em;
  color: rgba(214, 226, 255, 0.6);
  text-decoration: none;
  transition: color 140ms ease;
}

.github-link:hover {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: underline;
}

button {
  font-family: inherit;
}

@media (max-width: 900px) {
  .overlay-2d {
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
  }

  .reset-button-container {
    top: auto;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
  }

  .prediction-overlay {
    top: auto;
    right: 50%;
    bottom: 96px;
    transform: translateX(50%);
  }

  .instructions-overlay {
    display: none;
  }

  .mobile-instructions-overlay {
    position: absolute;
    bottom: 96px;
    left: 50%;
    transform: translateX(-50%);
    display: block;
    z-index: 10;
    pointer-events: none;
  }

  .mobile-instructions-content {
    pointer-events: auto;
    background: rgba(8, 14, 28, 0.88);
    border-radius: 16px;
    padding: 16px 20px;
    border: 1px solid rgba(91, 160, 255, 0.25);
    backdrop-filter: blur(14px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
    color: rgba(214, 226, 255, 0.88);
    text-align: left;
  }

  .mobile-gesture-list {
    margin: 8px 0 0;
    padding-left: 16px;
    display: grid;
    gap: 4px;
    font-size: 0.9rem;
  }

  .grid {
    gap: 1px;
    padding: 6px;
  }

  .grid-cell {
    width: 8px;
    height: 8px;
  }

  .timeline-overlay {
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
  }

  .timeline-container {
    width: 100%;
    gap: 10px;
  }

  .timeline-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .timeline-metrics {
    text-align: left;
  }
}