/* Launching Video Maker interface theme and layout. */
:root {
  color-scheme: light;
  --bg: #ece5da;
  --paper: #fffaf2;
  --paper-soft: #f4ede3;
  --ink: #332f2a;
  --muted: #756e65;
  --line: #514941;
  --line-soft: rgba(81, 73, 65, 0.14);
  --accent: #aa5a49;
  --accent-dark: #735047;
  --deep: #332f2a;
  --deep-soft: #e0d7cb;
  --blue: #5b8d88;
  --gold: #c09a45;
  --shadow: none;
  --radius-lg: 0;
  --radius-md: 0;
  --radius-sm: 0;
  --grid-unit: 12px;
  --content-max: 1280px;
  --layout-max: 1364px;
  --type-label: 0.68rem;
  --type-label-small: 0.58rem;
  --type-button: 0.7rem;
  --type-input: 0.78rem;
  --control-height: 2.1rem;
  --choice-height: 2.15rem;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

html {
  font-size: 103%;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: "Helvetica Neue", Helvetica, "Nimbus Sans", "Arial", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

.page-shell {
  position: relative;
  z-index: 1;
  width: min(1420px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 12px 0 22px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  justify-content: space-between;
  gap: clamp(18px, 3vw, 42px);
  width: min(100%, var(--layout-max));
  margin: 0 auto 10px;
  padding: 8px 0 8px;
}

.topbar,
.controls-panel,
.stage-panel,
.video-panel {
  position: relative;
}

h1,
h2,
h3 {
  font-family: inherit;
  margin: 0;
  font-weight: 800;
  letter-spacing: 0;
}

h1 {
  max-width: none;
  font-size: 2.72rem;
  line-height: 1.16;
}

.title-block {
  min-width: 0;
  align-self: end;
  padding-bottom: 4px;
}

.app-subtitle {
  max-width: none;
  margin: 5px 0 0 2px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.25;
}

.michotte-card {
  display: grid;
  grid-template-columns: 176px minmax(0, 12rem);
  align-items: end;
  gap: 12px;
  align-self: end;
  justify-self: end;
  width: auto;
  margin: 0;
  color: inherit;
  text-align: left;
}

.michotte-photo-wrap {
  position: relative;
  display: block;
  overflow: hidden;
}

.michotte-card img {
  display: block;
  width: 176px;
  height: 96px;
  object-fit: cover;
  filter: grayscale(1);
}

.michotte-caption {
  display: grid;
  gap: 3px;
  margin: 0 0 6px;
  font-size: 0.86rem;
  line-height: 1.15;
}

.michotte-card strong {
  text-transform: uppercase;
  letter-spacing: 0;
}

.michotte-name-link {
  color: var(--ink);
  text-decoration: none;
}

.michotte-name-link:hover {
  color: var(--accent-dark);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.michotte-caption > span {
  color: var(--muted);
}

h2 {
  font-size: 1rem;
  line-height: 1.1;
}

h3 {
  font-size: 0.94rem;
  line-height: 1.12;
}

.microcopy,
.status-text,
.page-footer p,
#literatureBlurb,
#presetNote,
#presetSummary {
  color: var(--muted);
}

.app-grid {
  display: grid;
  grid-template-columns: minmax(0, 560px) minmax(0, 790px);
  gap: 14px;
  max-width: var(--layout-max);
  margin: 0 auto;
  justify-content: center;
  align-items: start;
}

.controls-panel,
.stage-panel,
.video-panel {
  background: var(--paper);
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
}

.controls-panel {
  display: flex;
  flex-direction: column;
  gap: 0;
  justify-self: center;
  width: 100%;
  max-width: 560px;
}

.stage-panel {
  position: sticky;
  top: 12px;
  justify-self: center;
  max-height: calc(100vh - 24px);
  overflow-y: auto;
}

.panel-block {
  padding: 7px;
  border-bottom: 2px solid var(--line);
  background: var(--paper);
}

.panel-block:last-child {
  border-bottom: 0;
}

.collapsible-panel {
  padding: 0;
}

.collapsible-panel > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 2.4rem;
  padding: 7px;
  cursor: pointer;
  list-style: none;
}

.collapsible-panel > summary::-webkit-details-marker {
  display: none;
}

.collapsible-panel > summary::after {
  content: "+";
  color: var(--accent-dark);
  font-size: 1.02rem;
  font-weight: 900;
  line-height: 1;
}

.collapsible-panel[open] > summary {
  border-bottom: 1px solid var(--line);
}

.collapsible-panel[open] > summary::after {
  content: "-";
}

.preset-panel > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
}

.movement-panel.is-individual-motion-active .movement-header-controls,
.movement-panel.is-individual-motion-active #pairMotionControls {
  opacity: 0.42;
}

.movement-panel.is-individual-motion-active #pairMotionControls {
  pointer-events: none;
}

.summary-reset-button {
  min-height: 1.55rem;
  padding: 4px 8px;
  font-size: 0.58rem;
  line-height: 1.1;
}

.psychopy-panel > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(6rem, 0.55fr) auto auto auto auto;
  align-items: center;
  gap: 8px;
}

.psychopy-panel > summary::after {
  justify-self: end;
}

.psychopy-panel > summary h2 {
  white-space: normal;
}

.panel-content {
  padding: 7px;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px;
  align-items: center;
  margin-bottom: 6px;
}

.movement-heading {
  grid-template-columns: 1fr;
  gap: 6px;
}

.movement-heading h2 {
  white-space: normal;
}

.movement-header-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 5px;
  align-items: center;
  justify-content: stretch;
}

.movement-header-controls .checkbox-field {
  min-height: 28px;
}

.manual-edit-checkbox-field span {
  white-space: normal;
}

.preset-save-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 92px 86px;
  gap: 6px;
  align-items: end;
  margin-top: 8px;
}

.preset-panel .panel-content,
.preset-compact-grid {
  display: grid;
  gap: 8px;
}

.preset-compact-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: end;
  gap: 6px;
}

.preset-name-field,
.preset-scenario-field {
  grid-column: span 2;
}

.preset-compact-grid .secondary-button,
.preset-compact-grid .download-link {
  width: 100%;
  min-width: 0;
  min-height: var(--choice-height);
  padding: 5px 6px;
  font-size: 0.58rem;
  letter-spacing: 0;
  line-height: 1.12;
  text-align: center;
  white-space: normal;
  overflow-wrap: normal;
}

.preset-storage-note,
#presetSummary,
#presetJsonLink {
  margin: 0;
  grid-column: 1 / -1;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(6.6rem, 1fr));
  gap: 4px;
}

.context-panel .control-grid {
  margin-top: 5px;
}

.context-head-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.context-head-row h2 {
  white-space: nowrap;
}

.field {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.wide-choice-field {
  grid-column: span 2;
}

.behavior-choice-field {
  grid-column: span 2;
}

.pair-control-subgrid > .wide-choice-field {
  grid-column: span 1;
}

.pair-control-subgrid > .behavior-choice-field {
  grid-column: span 2;
}

.triad-choice-field {
  grid-column: span 2;
}

.context-toggle-field {
  grid-column: 1 / -1;
}

.context-toggle-inline {
  grid-column: auto;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  align-items: center;
}

.context-toggle-inline > span:first-child {
  display: none;
}

/* app.js toggles these when context, canvas editing, rail, crosshair, trajectory, or tunnel controls are inactive. */
.context-dependent-control.is-retracted,
.context-pair-only-control.is-retracted,
.original-pair-context-label.is-retracted,
.custom-start-dependent-control.is-retracted,
.rail-dependent-control.is-retracted,
.crosshair-dependent-control.is-retracted,
.crosshair-blink-dependent-control.is-retracted,
.trajectory-dependent-control.is-retracted,
.text-box-dependent-control.is-retracted,
.billiard-dependent-control.is-retracted,
.grouping-dependent-control.is-retracted,
.fracture-target-list.is-retracted,
.occluder-width-field.is-retracted {
  display: none;
}

.context-copy-note,
.special-note {
  grid-column: 1 / -1;
  margin: 0;
  padding: 5px 7px;
  border-left: 3px solid var(--accent);
  background: var(--paper-soft);
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.25;
}

.field > .choice-row {
  display: grid;
  gap: 4px;
  color: inherit;
  font-size: inherit;
  font-weight: inherit;
  letter-spacing: 0;
  line-height: 1;
  text-transform: none;
  text-decoration: none;
}

.context-choice-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.two-choice-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-choice-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.choice-button {
  width: 100%;
  min-width: 0;
  min-height: var(--choice-height);
  padding: 5px 6px;
  background: var(--paper);
  color: var(--ink);
  font-size: var(--type-button);
  letter-spacing: 0;
  line-height: 1.15;
  text-align: center;
  text-transform: none;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: normal;
  text-wrap: balance;
}

.compact-choice-row .choice-button,
.wide-choice-field .choice-button {
  min-height: 2.15rem;
  padding: 4px 5px;
  font-size: 0.66rem;
}

.behavior-choice-row .choice-button {
  min-height: var(--choice-height);
  padding-inline: 5px;
}

.pair-control-subgrid .behavior-choice-row .choice-button {
  padding-inline: 3px;
  font-size: 0.58rem;
}

.pair-control-subgrid .wide-choice-field .choice-button {
  font-size: 0.62rem;
}

.choice-button.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.choice-button:not(.is-active):hover {
  background: var(--paper);
  border-color: var(--accent-dark);
  color: var(--ink);
}

.choice-button.is-active:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.choice-button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.control-subgroup {
  grid-column: 1 / -1;
  display: grid;
  gap: 4px;
  padding: 5px;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}

.collapsible-subgroup {
  gap: 0;
  padding: 0;
}

.collapsible-subgroup > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px;
  align-items: center;
  min-height: 2.35rem;
  padding: 5px;
  cursor: pointer;
  list-style: none;
}

.collapsible-subgroup > summary::-webkit-details-marker {
  display: none;
}

.collapsible-subgroup > summary::after {
  content: "+";
  color: var(--accent-dark);
  font-size: 1rem;
  font-weight: 900;
  line-height: 1;
}

.collapsible-subgroup[open] > summary {
  border-bottom: 1px solid var(--line);
}

.collapsible-subgroup[open] > summary::after {
  content: "-";
}

.collapsible-subgroup > .control-subgrid {
  padding: 5px;
}

.billiard-header-row {
  display: grid;
  grid-template-columns: minmax(130px, 0.34fr) minmax(0, 1fr);
  gap: 8px;
  align-items: center;
}

.billiard-toggle-field {
  min-height: 28px;
}

.billiard-experimental-note {
  justify-self: start;
  margin: 0;
  max-width: 30rem;
}

.billiard-manual-control.is-disabled {
  opacity: 0.48;
}

.billiard-manual-control.is-disabled input {
  cursor: not-allowed;
}

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

.wide-checkbox-field {
  grid-column: span 2;
}

.individual-ball-dependent-control.is-retracted {
  display: none !important;
}

.individual-motion-subgroup .wide-copy {
  grid-column: 1 / -1;
}

.context-pair-list {
  grid-column: 1 / -1;
  display: grid;
  gap: 4px;
}

.subgroup-title {
  color: var(--muted);
  font-size: var(--type-label);
  letter-spacing: 0;
  line-height: 1.15;
  text-transform: uppercase;
}

.control-subgrid {
  display: grid;
  grid-template-columns: repeat(4, minmax(6.6rem, 1fr));
  gap: 4px;
}

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

.wide-copy {
  grid-column: span 3;
  align-self: center;
  margin: 0;
}

.field > span {
  color: var(--ink);
  font-size: var(--type-label);
  font-weight: 800;
  line-height: 1.22;
  text-transform: uppercase;
  letter-spacing: 0;
}

.unit-label {
  color: var(--muted);
  font-size: var(--type-label-small);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.18;
  text-transform: none;
}

.help-field > span {
  cursor: help;
  text-decoration: underline dotted rgba(39, 34, 28, 0.34) 1px;
  text-underline-offset: 3px;
}

.parameter-tooltip {
  position: fixed;
  z-index: 30;
  max-width: min(260px, calc(100vw - 24px));
  padding: 6px 7px;
  border: 1px solid var(--line);
  background: var(--ink);
  color: var(--paper);
  font-size: 0.55rem;
  font-weight: 560;
  line-height: 1.28;
  pointer-events: none;
  white-space: pre-line;
}

.parameter-tooltip::first-line {
  font-weight: 820;
}

.field output {
  display: none;
}

.field output,
.microcopy,
.status-text,
.download-link,
#exportMeta {
  font-size: 0.78rem;
}

input[type="text"],
input[type="number"],
textarea,
select {
  width: 100%;
  min-height: var(--control-height);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 4px 6px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: var(--type-input);
  line-height: 1.2;
}

input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus,
button:focus-visible,
.download-link:focus-visible {
  outline: 3px solid rgba(170, 90, 73, 0.26);
  outline-offset: 2px;
}

.range-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(3.8rem, 30%, 4.55rem);
  gap: 4px;
  align-items: center;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.fine-input {
  width: 100%;
  min-width: 0;
  height: auto;
  min-height: var(--control-height);
  padding: 3px 4px;
  font-size: 0.74rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

input[type="color"] {
  width: 100%;
  height: var(--control-height);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 3px;
  background: var(--paper);
  cursor: pointer;
}

.color-field {
  grid-template-columns: minmax(0, 1fr) 42px;
  align-items: center;
}

.color-field span {
  min-width: 0;
}

.checkbox-field {
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 4px;
  min-height: 2.1rem;
  padding: 4px 5px;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}

.checkbox-field input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.tunnel-checkbox-field {
  align-content: center;
  border: 0;
  background: transparent;
  padding: 2px 0;
}

.fracture-target-list {
  grid-column: 1 / -1 !important;
  display: grid;
  grid-template-columns: minmax(110px, 0.22fr) minmax(0, 1fr);
  gap: 5px;
  align-items: stretch;
  width: 100%;
  padding: 4px;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}

.fracture-target-note {
  display: grid;
  align-content: center;
  gap: 2px;
  margin: 0;
  color: var(--muted);
  font-size: 0.54rem;
  font-weight: 860;
  letter-spacing: 0;
  line-height: 1.05;
  text-transform: uppercase;
}

.fracture-target-note small {
  color: var(--muted);
  font-size: 0.46rem;
  font-weight: 650;
  letter-spacing: 0;
  line-height: 1.05;
  text-transform: none;
}

.fracture-target-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(128px, 1fr));
  gap: 4px;
}

.fracture-target-row {
  display: grid;
  grid-template-columns: minmax(4.75rem, 1fr) auto;
  gap: 4px;
  align-items: center;
  min-height: 2rem;
  padding: 3px 4px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.fracture-target-row strong {
  overflow: visible;
  color: var(--muted);
  font-size: 0.58rem;
  font-weight: 840;
  letter-spacing: 0;
  text-transform: uppercase;
  text-overflow: clip;
  white-space: normal;
  overflow-wrap: break-word;
}

.fracture-target-options {
  display: inline-flex;
  gap: 6px;
  justify-content: flex-end;
}

.fracture-target-row label {
  display: inline-flex;
  gap: 3px;
  align-items: center;
  color: var(--ink);
  font-size: 0.5rem;
  font-weight: 840;
  line-height: 1;
}

.fracture-target-row input {
  width: 12px;
  height: 12px;
  accent-color: var(--accent);
}

.trajectory-selected-field output {
  display: block;
  color: var(--ink);
  font-size: 0.58rem;
  text-align: left;
}

button,
.download-link {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 2.25rem;
  border-radius: 0;
  padding: 6px 10px;
  font: inherit;
  font-size: var(--type-button);
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  border: 1px solid var(--line);
  cursor: pointer;
  transition:
    color 120ms ease,
    background 120ms ease,
    border-color 120ms ease;
}

button:hover,
.download-link:hover {
  background: var(--line);
  color: var(--paper);
}

button:disabled {
  cursor: wait;
  opacity: 0.58;
}

.primary-button,
.secondary-button {
  background: var(--paper);
  color: var(--ink);
}

.accent-button {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

#exportButton {
  justify-self: end;
  min-width: 0;
}

.summary-export-button {
  min-height: 2.15rem;
  min-width: 84px;
  padding: 5px 7px;
  white-space: normal;
}

.summary-compose-button {
  min-height: 2.15rem;
  min-width: 104px;
  padding: 5px 7px;
  white-space: normal;
}

.export-summary-status {
  min-height: 0;
  margin: 0;
  overflow: visible;
  color: var(--accent-dark);
  font-size: 0.7rem;
  font-weight: 800;
  line-height: 1.18;
  text-align: right;
  text-overflow: clip;
  white-space: normal;
  overflow-wrap: anywhere;
}

.summary-download-link {
  min-height: 2.15rem;
  margin-top: 0;
  padding: 5px 6px;
  white-space: normal;
}

.stage-panel {
  padding: 9px;
  width: 100%;
  max-width: 790px;
}

.preview-bar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 9px;
  align-items: center;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line);
}

.preview-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.preview-scope-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  min-width: 170px;
}

.preview-scope-row .choice-button {
  min-height: 34px;
  padding: 5px 8px;
  font-size: 0.64rem;
}

.preview-button {
  min-width: 132px;
  min-height: 40px;
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  font-size: 0.78rem;
}

.summary-details {
  margin-bottom: 7px;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}

.summary-details > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-height: 2.25rem;
  padding: 5px 7px;
  cursor: pointer;
  list-style: none;
}

.summary-details > summary::-webkit-details-marker {
  display: none;
}

.summary-details > summary::after {
  content: "+";
  color: var(--accent-dark);
  font-size: 0.86rem;
  font-weight: 900;
}

.summary-details[open] > summary {
  border-bottom: 1px solid var(--line);
}

.summary-details[open] > summary::after {
  content: "-";
}

.summary-details summary span {
  color: var(--ink);
  font-size: 0.66rem;
  font-weight: 900;
  letter-spacing: 0;
}

.summary-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  background: var(--paper);
}

.summary-strip span {
  display: grid;
  gap: 1px;
  min-width: 0;
  min-height: 30px;
  padding: 4px 5px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.summary-strip span:nth-child(6n) {
  border-right: 0;
}

.summary-strip b {
  color: var(--muted);
  font-size: 0.48rem;
  line-height: 1;
  letter-spacing: 0;
  text-transform: uppercase;
}

.summary-strip em {
  overflow: visible;
  color: var(--ink);
  font-size: 0.58rem;
  font-style: normal;
  font-weight: 800;
  line-height: 1.08;
  text-overflow: clip;
  white-space: normal;
  overflow-wrap: break-word;
}

.artifact-card {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  border: 1px solid var(--line);
  margin-bottom: 8px;
  background: var(--paper-soft);
}

.artifact-card span {
  display: grid;
  gap: 2px;
  min-width: 0;
  padding: 6px 6px;
  border-right: 1px solid var(--line);
}

.artifact-card span:last-child {
  border-right: 0;
}

.artifact-card b {
  color: var(--muted);
  font-size: 0.52rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.artifact-card em {
  overflow: visible;
  color: var(--ink);
  font-size: 0.66rem;
  font-style: normal;
  font-weight: 800;
  text-overflow: clip;
  white-space: normal;
  overflow-wrap: break-word;
}

.validation-list {
  display: grid;
  gap: 3px;
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
}

.validation-list li {
  border-left: 4px solid var(--accent);
  padding: 5px 7px;
  background: #f6e7d8;
  color: var(--accent-dark);
  font-size: 0.7rem;
  font-weight: 800;
  line-height: 1.25;
}

.preview-note {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 700;
  line-height: 1.25;
}

.sequence-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  margin-top: 7px;
  padding: 6px;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}

.sequence-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  min-width: 0;
}

.sequence-clip-button {
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.sequence-clip-button.is-active {
  border-color: var(--accent);
  background: var(--ink-soft);
  color: white;
}

.stage-frame {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--line);
  background:
    linear-gradient(180deg, rgba(20, 24, 22, 0.98), rgba(17, 21, 20, 0.96)),
    #111514;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

/* app.js owns these cursor states during start-point, rail/crosshair, and trajectory editing. */
canvas.start-drag-enabled {
  cursor: grab;
}

canvas.special-drag-enabled {
  cursor: crosshair;
}

canvas.trajectory-edit-enabled {
  cursor: crosshair;
}

canvas.individual-ball-edit-enabled {
  cursor: crosshair;
}

canvas.start-drag-enabled:active,
canvas.special-drag-enabled:active,
canvas.trajectory-edit-enabled:active,
canvas.individual-ball-edit-enabled:active {
  cursor: grabbing;
}

.stage-overlay {
  position: absolute;
  inset: 0;
  padding: 10px;
  pointer-events: none;
}

.stage-overlay span {
  position: absolute;
  display: inline-flex;
  align-items: center;
  max-width: calc(50% - 14px);
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: rgba(251, 250, 241, 0.92);
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
  line-height: 1.12;
  white-space: normal;
}

#scenarioBadge {
  top: 10px;
  left: 10px;
}

#timingBadge {
  top: 10px;
  right: 10px;
}

.preview-timer-badge {
  right: 10px;
  bottom: 10px;
  max-width: none;
  min-height: 26px;
  padding: 0 8px;
  border: 1px solid rgba(251, 250, 241, 0.34);
  background: rgba(17, 21, 20, 0.74);
  color: var(--paper);
  font-size: 0.66rem;
  font-weight: 820;
  letter-spacing: 0;
  text-transform: none;
  pointer-events: none;
  font-variant-numeric: tabular-nums;
}

.video-panel {
  background: var(--paper);
}

.video-panel h2 {
  text-transform: uppercase;
  letter-spacing: 0;
}

.video-panel {
  margin-top: 10px;
  padding: 12px;
}

.artifact-card {
  grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
  margin: 0 0 10px;
}

.status-text {
  margin: 10px 0 6px;
  min-height: 1.4em;
  color: var(--accent-dark);
  font-weight: 800;
}

.compatibility-note {
  margin: 0 0 8px;
  padding: 6px 8px;
  border-left: 4px solid var(--accent);
  background: #f6e7d8;
  color: var(--accent-dark);
  font-size: 0.68rem;
  font-weight: 800;
  line-height: 1.28;
}

#exportedVideo {
  width: 100%;
  display: block;
  margin-top: 10px;
  border: 1px solid var(--line);
  background: #111514;
}

.download-link {
  margin-top: 6px;
  background: var(--paper-soft);
  color: var(--ink);
  text-decoration: none;
}

.full-button {
  width: 100%;
  margin-top: 8px;
}

.condition-set-box {
  display: grid;
  gap: 7px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.button-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.export-tools-row {
  margin-top: 8px;
}

.page-footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(14rem, auto);
  gap: 16px;
  align-items: start;
  margin-top: 18px;
  padding: 12px 0 0;
  border-top: 2px solid var(--line);
}

.page-footer p {
  margin: 0;
  font-size: 0.82rem;
}

.page-footer small {
  max-width: 320px;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.25;
  text-align: right;
  overflow-wrap: anywhere;
}

.page-footer code {
  font-family: inherit;
  font-weight: 800;
  color: var(--ink);
}

.feedback-card {
  display: grid;
  gap: 8px;
  max-width: 520px;
}

.feedback-toggle {
  justify-self: start;
}

.feedback-panel {
  display: grid;
  gap: 6px;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}

.feedback-panel label {
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.feedback-panel textarea {
  min-height: 86px;
  resize: vertical;
  line-height: 1.25;
}

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

.feedback-send {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  text-decoration: none;
}

.feedback-actions small {
  max-width: none;
  text-align: left;
}

/* Shared utility for generated links, warnings, and panels that app.js reveals after user actions. */
.hidden {
  display: none;
}

@media (max-width: 720px) {
  .movement-heading {
    grid-template-columns: 1fr;
  }

  .movement-header-controls {
    grid-template-columns: 1fr;
    justify-content: stretch;
  }

  .psychopy-panel > summary {
    grid-template-columns: minmax(0, 1fr) auto auto auto auto;
    gap: 6px;
  }

  .export-summary-status {
    display: none;
  }

  .summary-compose-button,
  .summary-export-button {
    min-width: 0;
    min-height: 44px;
  }

  .summary-download-link {
    grid-column: 2 / -1;
    width: 100%;
    min-height: 44px;
  }

}

@media (max-width: 1080px) {
  h1 {
    font-size: 2.2rem;
  }

  .app-subtitle {
    font-size: 0.82rem;
  }

  .app-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .michotte-card {
    justify-self: start;
  }

  .stage-panel {
    position: static;
    max-height: none;
    overflow-y: visible;
  }

  .page-shell {
    width: min(100vw - 24px, 980px);
  }
}

@media (max-width: 1080px) and (min-width: 721px) {
  :root {
    --choice-height: 2.5rem;
    --control-height: 2.5rem;
  }

  button,
  .download-link {
    min-height: 44px;
  }

  .checkbox-field {
    min-height: 44px;
  }

  .choice-button,
  .compact-choice-row .choice-button,
  .wide-choice-field .choice-button,
  .behavior-choice-row .choice-button,
  .preview-button,
  .summary-compose-button,
  .summary-export-button,
  .summary-reset-button,
  .preset-compact-grid .secondary-button,
  .preset-compact-grid .download-link,
  .movement-header-controls .checkbox-field {
    min-height: 44px;
  }

  .control-grid,
  .control-subgrid,
  .preset-compact-grid,
  .button-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

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

  .context-toggle-field,
  .context-copy-note,
  .special-note,
  .control-subgroup,
  .wide-copy,
  .fracture-target-list,
  .context-pair-list {
    grid-column: 1 / -1;
  }

  .range-pair {
    grid-template-columns: minmax(0, 1fr) clamp(3.8rem, 30%, 4.55rem);
  }

  .pair-control-subgrid .range-pair {
    grid-template-columns: minmax(0, 1fr) clamp(3.65rem, 32%, 3.9rem);
  }

  .pair-control-subgrid .fine-input {
    padding-inline: 3px;
    font-size: 0.7rem;
  }

  .summary-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .summary-strip span:nth-child(3n) {
    border-right: 0;
  }

  .summary-strip span:nth-child(n + 4) {
    border-top: 1px solid var(--line);
  }

  .export-summary-status {
    white-space: normal;
    text-overflow: clip;
  }

  .summary-export-button,
  .summary-download-link {
    min-height: 44px;
  }
}

@media (max-width: 720px) {
  :root {
    --choice-height: 2.75rem;
    --control-height: 2.75rem;
  }

  .page-shell {
    width: calc(100vw - 16px);
    padding-top: 12px;
  }

  h1 {
    font-size: 1.9rem;
    line-height: 1.08;
  }

  .app-subtitle {
    font-size: 0.78rem;
  }

  .topbar {
    align-items: flex-start;
    gap: 12px;
  }

  .michotte-card {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 10px;
  }

  .michotte-card img {
    width: 150px;
    height: 88px;
  }

  .michotte-caption {
    font-size: 0.68rem;
    margin-bottom: 3px;
  }

  .stage-panel,
  .video-panel {
    padding: 12px;
  }

  .collapsible-panel > summary,
  .summary-details > summary,
  .psychopy-panel > summary {
    min-height: 44px;
  }

  .panel-block {
    padding: 14px;
  }

  .section-heading,
  .context-head-row,
  .preset-compact-grid,
  .preset-save-row,
  .preview-bar,
  .preview-actions,
  .sequence-panel,
  .billiard-header-row,
  .control-grid,
  .control-subgrid,
  .summary-strip,
  .artifact-card,
  .button-row {
    grid-template-columns: 1fr;
  }

  .preset-compact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .preset-scenario-field,
  .preset-name-field {
    grid-column: 1 / -1;
  }

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

  .pair-control-subgrid > .wide-choice-field,
  .pair-control-subgrid > .behavior-choice-field {
    grid-column: 1 / -1;
  }

  .billiard-subgroup .control-subgrid {
    grid-template-columns: 1fr;
  }

  .wide-choice-field,
  .behavior-choice-field {
    grid-column: auto;
  }

  .summary-strip span,
  .artifact-card span {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .summary-strip span:last-child,
  .artifact-card span:last-child {
    border-bottom: 0;
  }

  .preview-button {
    width: 100%;
    min-height: 44px;
  }

  .movement-header-controls .checkbox-field {
    min-height: 44px;
  }

  .summary-reset-button {
    min-height: 44px;
  }

  .stage-overlay {
    flex-direction: column;
    gap: 8px;
  }

  .page-footer {
    grid-template-columns: 1fr;
  }

  .page-footer small {
    max-width: none;
    text-align: left;
  }

  .range-pair {
    grid-template-columns: minmax(0, 1fr) clamp(4.2rem, 32%, 4.9rem);
    min-height: 44px;
  }

  input[type="range"] {
    min-height: 44px;
  }

  input[type="text"],
  input[type="number"],
  select,
  .fine-input {
    min-height: 44px;
    font-size: 16px;
  }

  .checkbox-field input {
    width: 22px;
    height: 22px;
  }

  button,
  .download-link {
    min-height: 44px;
    font-size: 0.72rem;
  }

  .checkbox-field {
    min-height: 44px;
  }

  .choice-button,
  .compact-choice-row .choice-button,
  .wide-choice-field .choice-button,
  .behavior-choice-row .choice-button,
  .preset-compact-grid .secondary-button,
  .preset-compact-grid .download-link {
    min-height: 44px;
    font-size: 0.72rem;
    line-height: 1.18;
  }

  .context-toggle-inline {
    grid-template-columns: 1fr;
  }
}