:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --ink: #17202c;
  --muted: #657386;
  --line: #d9e0ea;
  --accent: #1769e0;
  --accent-dark: #0f4fa8;
  --ok: #0c8f57;
  --warn: #ab6b00;
  --danger: #b42318;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
}

button,
input,
select {
  font: inherit;
}

.app {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(360px, 21vw, 520px);
  gap: clamp(8px, 0.5vw, 12px);
  height: 100dvh;
  min-height: 0;
  padding: clamp(8px, 0.5vw, 12px);
  overflow: hidden;
}

.workspace,
.controls {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 0;
}

.workspace {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  overflow: hidden;
}

.viewer {
  position: relative;
  min-height: 0;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(23, 32, 44, 0.045) 1px, transparent 1px),
    linear-gradient(0deg, rgba(23, 32, 44, 0.045) 1px, transparent 1px),
    #eef2f8;
  background-size: 24px 24px;
}

canvas {
  display: block;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 6px;
  image-rendering: auto;
}

.viewer canvas {
  position: absolute;
  left: 50%;
  top: 50%;
  max-width: none;
  max-height: none;
  transform: translate(-50%, -50%);
  transform-origin: center;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.viewer .tilt-canvas {
  inset: 0;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 0;
  background: #000000;
  cursor: default;
  transform: none;
}

.viewer .tilt-teacher-canvas {
  inset: 0;
  left: 0;
  top: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 0;
  background: #000000;
  cursor: default;
  pointer-events: none;
  transform: none;
}

.tilt-frame-overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  overflow: hidden;
}

.tilt-frame-overlay span {
  position: absolute;
  height: 1px;
  border-top: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 0 1px rgba(20, 26, 36, 0.55);
  transform-origin: 0 50%;
}

.tilt-frame-overlay i {
  position: absolute;
  width: 8px;
  height: 8px;
  border: 1px solid #ffffff;
  border-radius: 50%;
  background: rgba(20, 26, 36, 0.7);
  transform: translate(-50%, -50%);
}

.viewer.is-panning canvas {
  cursor: grabbing;
}

.preview-image-frame {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  box-sizing: border-box;
  border: 1px solid rgba(23, 32, 44, 0.72);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.7);
  pointer-events: none;
  transform-origin: center;
}

.preview-image-frame[hidden] {
  display: none;
}

.view-controls {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 4;
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 2px 8px rgba(23, 32, 44, 0.1);
}

.view-controls[hidden] {
  display: none;
}

.view-controls button {
  min-width: 44px;
  min-height: 28px;
  padding: 3px 7px;
  font-size: 11px;
  font-weight: 800;
}

canvas[hidden] {
  display: none;
}

.drop-zone {
  position: absolute;
  inset: 22px;
  display: grid;
  place-content: center;
  gap: 8px;
  border: 2px dashed #9aabc0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--muted);
  text-align: center;
  z-index: 3;
}

.drop-zone strong {
  color: var(--ink);
  font-size: 22px;
}

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

.drop-zone.dragover {
  border-color: var(--accent);
  background: rgba(222, 235, 255, 0.9);
}

.progress {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.progress div {
  min-width: 0;
  overflow: hidden;
  padding: 6px 8px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.progress div:nth-child(5),
.progress div:nth-child(10) {
  border-right: 0;
}

.progress div:nth-child(n + 6) {
  border-bottom: 0;
}

.progress span,
label {
  display: block;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.progress span,
.progress strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.progress strong {
  display: block;
  margin-top: 2px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.controls {
  display: grid;
  grid-template-rows: auto 28px minmax(0, 1fr) auto;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 10px;
  overflow: hidden;
}

.tab-viewport,
.tab-panel {
  min-width: 0;
  min-height: 0;
}

.tab-viewport {
  overflow: hidden;
}

.tab-panel {
  display: none;
  height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
}

.tab-panel.active {
  display: block;
}

.training-panel-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-content: start;
  gap: 6px;
  min-height: 100%;
  padding-right: 2px;
}

.image-actions,
.preview-mode,
.training-grid,
.actions,
.lr-panel,
.virtual-camera-panel,
.capacity-control,
.budget-panel {
  grid-column: 1 / -1;
}

.brand h1 {
  margin: 0;
  font-size: 20px;
  line-height: 1.15;
}

.brand p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.25;
}

.controls-brand {
  min-width: 0;
}

label {
  display: grid;
  gap: 4px;
}

.image-actions {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(92px, 1fr);
  grid-template-rows: 32px 28px;
  gap: 6px;
}

#loadImageButton {
  grid-row: 1 / 3;
  min-height: 66px;
}

#clearImageButton {
  grid-column: 2;
  grid-row: 1;
}

#sampleButton {
  grid-column: 2;
  grid-row: 2;
  min-height: 28px;
  padding-block: 3px;
  font-size: 11px;
}

.image-actions button {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-mode {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 5px 0;
}

.preview-mode > span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.preview-mode-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.preview-mode-buttons button {
  min-height: 30px;
  font-size: 12px;
  font-weight: 800;
}

.preview-mode-buttons button.active {
  border-color: var(--accent);
  background: #edf4ff;
  color: var(--accent);
}

.outside-preview-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.outside-preview-toggle input {
  width: 14px;
  height: 14px;
  margin: 0;
}

.alpha-background-row,
.export-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.alpha-background-row {
  margin-bottom: 14px;
}

.alpha-background-row input[type="color"] {
  width: 44px;
  height: 28px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
}

.export-option {
  justify-content: flex-start;
}

.training-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 6px;
}

.field-wide {
  grid-column: 1 / -1;
}

.capacity-control {
  padding: 2px 0;
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 32px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
}

.budget-panel,
.lr-panel,
.virtual-camera-settings {
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f9fbfe;
}

.budget-panel summary,
.lr-panel summary,
.virtual-camera-settings summary {
  cursor: pointer;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.budget-body,
.lr-body,
.virtual-camera-body {
  display: grid;
  gap: 6px;
  margin-top: 8px;
}

.settings-section {
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.virtual-camera-panel {
  display: grid;
  gap: 6px;
}

.virtual-camera-toggle {
  min-height: 32px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
}

.virtual-camera-body {
  grid-template-columns: 1fr 1fr;
}

.lr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

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

.inline-option input {
  width: auto;
  min-height: auto;
}

.growth-option {
  display: grid;
  grid-column: 1 / -1;
  gap: 2px;
  padding-top: 4px;
}

.growth-option small {
  color: var(--muted);
  line-height: 1.3;
}

.experimental-performance-options {
  display: grid;
  gap: 6px;
  margin-top: 2px;
  padding: 8px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.experimental-performance-options strong {
  color: var(--ink);
  font-size: 12px;
}

.experimental-performance-options small {
  color: var(--muted);
  line-height: 1.3;
}

.panel-title {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.panel-title span {
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.panel-title button {
  min-height: 28px;
  padding: 4px 8px;
  font-size: 12px;
}

.budget-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.budget-grid div {
  min-width: 0;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

.budget-grid span {
  display: block;
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}

.budget-grid strong {
  display: block;
  overflow-wrap: anywhere;
  margin-top: 2px;
  font-size: 11px;
  line-height: 1.25;
}

#budgetNote {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.35;
}

.actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

button {
  min-height: 32px;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
}

button:hover:not(:disabled) {
  border-color: var(--accent);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.46;
}

#startButton {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

#startButton:hover:not(:disabled) {
  background: var(--accent-dark);
}

.log-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 4px;
}

.tilt-panel-body {
  display: grid;
  align-content: start;
  gap: 14px;
  min-height: 0;
}

.tilt-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 6px;
}

.tilt-view-mode {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
}

.tilt-view-mode button.active {
  border-color: var(--accent);
  color: var(--accent);
}

.tilt-camera-markers-option {
  margin: 0;
  padding: 8px 0 0;
}

.tilt-camera-summary {
  margin: -8px 0 0;
  padding: 0 0 10px 28px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}

.tilt-framing-field {
  margin: 0;
}

.tilt-training-views-status {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 11px;
}

.tilt-training-views-status progress {
  width: 100%;
  height: 8px;
  accent-color: var(--accent);
}

.tilt-contact-sheet {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
}

.tilt-contact-sheet:empty {
  display: none;
}

.tilt-contact-sheet button {
  display: grid;
  min-width: 0;
  padding: 3px;
  gap: 3px;
  overflow: hidden;
  background: #ffffff;
}

.tilt-contact-sheet img,
.tilt-contact-sheet canvas {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: #000000;
}

.tilt-contact-sheet span {
  overflow: hidden;
  font-size: 9px;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tilt-diagnostics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 12px;
  margin: 0;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.tilt-diagnostics div {
  min-width: 0;
}

.tilt-diagnostics dt {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.tilt-diagnostics dd {
  margin: 2px 0 0;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.25;
  overflow-wrap: anywhere;
  white-space: normal;
}

.log-tabs button {
  min-height: 28px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.log-tabs button.active {
  border-color: var(--accent);
  color: var(--accent);
}

.log {
  height: 100%;
  min-height: 0;
  overflow: auto;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
}

.event-log-layout {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 6px;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

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

.log-toolbar strong {
  font-size: 12px;
}

.log-toolbar button {
  min-height: 28px;
  padding: 4px 12px;
}

.splat-editor,
.export-panel-body {
  height: 100%;
  overflow: auto;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

.panel-message {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.35;
}

.editor-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}

.editor-heading strong {
  font-size: 13px;
}

#splatsMeta {
  padding-bottom: 5px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
}

.adjustment-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 5px 8px;
  margin-bottom: 14px;
}

.adjustment-row output {
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
  text-transform: none;
}

.adjustment-row input {
  grid-column: 1 / -1;
  min-height: 20px;
  padding: 0;
}

.splat-shape-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  margin: 10px 0 14px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.splat-shape-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: min(210px, 100%);
}

.splat-shape-options button {
  min-height: 30px;
  padding: 4px 10px;
  border-radius: 0;
}

.splat-shape-options button:first-child {
  border-radius: 5px 0 0 5px;
}

.splat-shape-options button:last-child {
  margin-left: -1px;
  border-radius: 0 5px 5px 0;
}

.splat-shape-options button.active {
  position: relative;
  z-index: 1;
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.editor-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 6px;
  margin-bottom: 8px;
}

#resetSplatAdjustments {
  width: 100%;
  margin-bottom: 8px;
}

.export-panel-body {
  display: grid;
  grid-template-columns: 1fr auto;
  align-content: start;
  gap: 7px 8px;
}

.export-panel-body > label,
.export-panel-body > .panel-message,
.export-panel-body > .export-summary {
  grid-column: 1 / -1;
}

.export-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.export-summary span {
  min-width: 0;
  padding: 6px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
  text-transform: uppercase;
}

.export-summary strong {
  display: block;
  overflow: hidden;
  margin-top: 2px;
  color: var(--ink);
  font-size: 10px;
  text-overflow: ellipsis;
  text-transform: none;
  white-space: nowrap;
}

.export-button {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  font-weight: 800;
}

.export-actions {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1fr);
  gap: 7px;
}

.export-divider {
  height: 1px;
  margin: 3px 0;
  background: var(--line);
}

.export-actions .panel-message {
  margin: 0;
}

.export-button-secondary {
  background: #ffffff;
  border-color: var(--line-strong);
  color: var(--ink);
}

.export-button-secondary:hover:not(:disabled) {
  background: var(--surface);
}

.app-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 4px 10px;
  min-width: 0;
  padding-top: 6px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
  line-height: 1.2;
  text-align: right;
}

.app-footer a {
  color: var(--muted);
  white-space: nowrap;
}

.export-button:hover:not(:disabled) {
  background: var(--accent-dark);
}

@media (min-width: 1800px) {
  .controls {
    grid-template-rows: auto 32px minmax(0, 1fr) auto;
    gap: 8px;
    padding: 12px;
  }

  .log-tabs button {
    min-height: 32px;
  }

  .training-panel-body,
  .lr-body,
  .budget-body {
    gap: 8px;
  }

  .view-controls {
    right: 16px;
    bottom: 16px;
  }
}

@media (max-width: 880px) {
  body {
    height: auto;
    overflow: auto;
  }

  .app {
    grid-template-columns: 1fr;
    gap: 8px;
    height: auto;
    padding: 8px;
    overflow: visible;
  }

  .workspace {
    height: clamp(420px, 75dvh, 760px);
  }

  .progress {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .controls {
    grid-template-rows: auto 28px minmax(560px, auto) auto;
    overflow: visible;
  }

  .tab-viewport {
    overflow: visible;
  }
}

@media (max-width: 520px) {
  .progress {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .progress div:nth-child(5),
  .progress div:nth-child(10),
  .progress div:nth-child(n + 6) {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .progress div:nth-child(2n) {
    border-right: 0;
  }

  .progress div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
}