:root {
  color-scheme: light;
  --bg: #f6f7f8;
  --bg-elevated: #ffffff;
  --panel: #ffffff;
  --panel-solid: #ffffff;
  --panel-hover: #f3f8ff;
  --border: #e2e6ea;
  --border-strong: #c9d0d8;
  --text: #20242a;
  --text-soft: #4f5965;
  --text-muted: #68717d;
  --accent: #1266d4;
  --accent-strong: #0b4fae;
  --accent-soft: #f3f8ff;
  --blue: #1266d4;
  --danger: #b42318;
  --radius-lg: 5px;
  --radius-md: 5px;
  --shadow: none;
  --display: "Montserrat", "Segoe UI", Arial, Helvetica, sans-serif;
  --sans: "Segoe UI Variable", "Segoe UI", Arial, Helvetica, sans-serif;
  /* Use the available desktop width so all seven comparison results fit. */
  --content: 1560px;
  font-family: var(--sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: #ffffff;
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
}

a {
  color: var(--blue);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-strong);
}

a:focus-visible {
  outline: 3px solid rgba(18, 102, 212, 0.35);
  outline-offset: 4px;
  border-radius: 3px;
}

button,
input,
select {
  font: inherit;
}

button {
  color: inherit;
}

button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid rgba(18, 102, 212, 0.35);
  outline-offset: 4px;
}

.page-shell,
.viewer-shell,
main {
  width: min(calc(100% - 56px), var(--content));
  margin-inline: auto;
}

.page-header,
.viewer-header,
header[role="banner"] {
  padding: clamp(32px, 5vw, 68px) 0 24px;
}

.eyebrow,
.kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  max-width: 1000px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(32px, 3.1vw, 42px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.14;
}

.subtitle,
.header-description {
  max-width: 780px;
  margin: 14px 0 0;
  color: var(--text-soft);
  font-size: clamp(0.92rem, 1.5vw, 1.08rem);
  line-height: 1.65;
}

.viewer-grid,
.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 360px);
  gap: 18px;
  align-items: start;
}

.viewer-panel,
.image-panel,
.side-panel,
.metrics-panel,
.thumbnail-panel,
.table-panel,
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: none;
}

.viewer-panel,
.image-panel {
  min-width: 0;
  overflow: hidden;
}

.side-panel,
.metrics-panel {
  padding: 18px;
}

.viewer-toolbar,
.image-toolbar {
  display: flex;
  min-height: 64px;
  padding: 12px 14px 12px 18px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--border);
}

.toolbar-copy {
  min-width: 0;
}

.toolbar-label,
.section-label {
  display: block;
  margin-bottom: 3px;
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

#method-title {
  display: block;
  overflow: hidden;
  color: var(--text);
  font-size: 1rem;
  font-family: var(--display);
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.toolbar-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 9px;
}

.crop-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.crop-actions[hidden] {
  display: none;
}

#zoom-readout {
  min-width: 56px;
  color: var(--text-soft);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

#reset-view,
.ghost-button {
  min-height: 34px;
  padding: 7px 11px;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  color: var(--blue);
  background: #ffffff;
  cursor: pointer;
  transition: border-color 150ms ease, color 150ms ease, background 150ms ease,
    transform 150ms ease;
}

#reset-view:hover,
.ghost-button:hover {
  border-color: var(--blue);
  color: #ffffff;
  background: var(--blue);
}

.crop-button.is-active,
.crop-button[aria-pressed="true"],
.crop-button.is-active:hover,
.crop-button[aria-pressed="true"]:hover {
  border-color: var(--blue);
  color: #ffffff;
  background: var(--blue);
}

#reset-view:active,
.ghost-button:active {
  transform: translateY(1px);
}

#image-stage {
  position: relative;
  display: grid;
  width: 100%;
  height: clamp(390px, 67vh, 900px);
  min-height: 320px;
  place-items: center;
  overflow: hidden;
  isolation: isolate;
  background:
    linear-gradient(45deg, rgba(255, 255, 255, 0.018) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255, 255, 255, 0.018) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, 0.018) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, 0.018) 75%),
    #05070a;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-size: 16px 16px;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

#image-stage::after {
  position: absolute;
  z-index: 2;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.025);
  content: "";
  pointer-events: none;
}

#image-stage.is-dragging {
  cursor: grabbing;
}

#image-stage.is-loading::before {
  position: absolute;
  z-index: 3;
  width: 25px;
  height: 25px;
  border: 2px solid rgba(255, 255, 255, 0.14);
  border-top-color: var(--accent);
  border-radius: 50%;
  content: "";
  animation: viewer-spin 700ms linear infinite;
}

#main-image {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  pointer-events: none;
  transform: translate3d(0, 0, 0) scale(1);
  transform-origin: center center;
  transition: opacity 120ms ease;
  will-change: transform;
  -webkit-user-drag: none;
}

/* Match the reference ImageViewer: use nearest-neighbor sampling once the
   source image is magnified, so individual pixels stay crisp. */
#image-stage.is-zoomed #main-image {
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
  -ms-interpolation-mode: nearest-neighbor;
}

#image-stage.is-loading #main-image {
  opacity: 0.54;
}

.viewer-error {
  position: absolute;
  z-index: 4;
  max-width: min(480px, calc(100% - 40px));
  padding: 12px 16px;
  border: 1px solid #f2b8b5;
  border-radius: 5px;
  color: #8f1d16;
  background: #fff5f4;
  font-size: 0.84rem;
  line-height: 1.5;
  text-align: center;
}

#method-tabs {
  display: flex;
  min-height: 62px;
  padding: 11px 13px;
  gap: 8px;
  overflow-x: auto;
  border-top: 1px solid var(--border);
  scrollbar-color: var(--border-strong) transparent;
  scrollbar-width: thin;
}

.method-tab {
  display: inline-flex;
  flex: 0 0 auto;
  min-height: 38px;
  padding: 8px 13px;
  align-items: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--text-soft);
  background: transparent;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color 150ms ease, border-color 150ms ease, background 150ms ease;
}

.method-tab:hover {
  color: var(--blue);
  background: var(--accent-soft);
}

.method-tab.is-active,
.method-tab[aria-selected="true"] {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--accent-soft);
}

.method-tab-index {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border-radius: 3px;
  color: var(--text-muted);
  background: #edf0f3;
  font-size: 0.64rem;
  font-variant-numeric: tabular-nums;
}

.method-tab.is-active .method-tab-index {
  color: #ffffff;
  background: var(--blue);
}

.panel-title,
.section-title {
  margin: 0;
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.panel-note,
.section-note {
  margin: 6px 0 0;
  color: var(--text-muted);
  font-size: 0.77rem;
  line-height: 1.55;
}

.metric-cards,
.metric-grid {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: 17px;
  gap: 9px;
}

.metric-card {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg);
}

.metric-name {
  display: block;
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-value,
#metric-relmse,
#metric-rayeff {
  color: var(--text);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(1.25rem, 2vw, 1.72rem);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: -0.035em;
}

.metric-unit {
  margin-left: 4px;
  color: var(--text-muted);
  font-size: 0.66rem;
  font-weight: 550;
  letter-spacing: 0;
}

.shortcut-list,
.controls-list {
  display: grid;
  margin: 20px 0 0;
  padding: 16px 0 0;
  gap: 9px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.73rem;
}

.shortcut-row,
.control-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

kbd {
  min-width: 23px;
  padding: 2px 6px;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  color: var(--text-soft);
  background: #f1f3f5;
  font-family: inherit;
  font-size: 0.66rem;
  text-align: center;
}

.lower-grid {
  display: block;
  margin-top: 18px;
  padding-bottom: 56px;
}

.lower-grid > .thumbnail-panel {
  width: 100%;
}

.thumbnail-panel,
.table-panel {
  min-width: 0;
  padding: 18px;
}

#thumbnail-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
  margin-top: 15px;
  gap: 10px;
}

.thumbnail-button {
  min-width: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-soft);
  background: #ffffff;
  cursor: pointer;
  text-align: left;
  transition: border-color 150ms ease, background 150ms ease, transform 150ms ease;
}

.thumbnail-button:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--accent-soft);
  transform: none;
}

.thumbnail-button.is-active,
.thumbnail-button[aria-current="true"] {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--blue) inset;
}

.thumbnail-frame {
  display: grid;
  aspect-ratio: 16 / 9;
  place-items: center;
  overflow: hidden;
  background: #05070a;
}

.thumbnail-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.thumbnail-label {
  display: block;
  overflow: hidden;
  padding: 9px 10px 10px;
  font-size: 0.72rem;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.table-scroll {
  margin: 15px -3px -3px;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.77rem;
}

th,
td {
  padding: 11px 10px;
  border-bottom: 1px solid var(--border);
  text-align: right;
  white-space: nowrap;
}

th:first-child,
td:first-child {
  max-width: 220px;
  overflow: hidden;
  text-align: left;
  text-overflow: ellipsis;
}

th {
  color: var(--text-muted);
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

td {
  color: var(--text-soft);
  font-variant-numeric: tabular-nums;
}

.metrics-row {
  cursor: pointer;
  transition: background 130ms ease;
}

.metrics-row:hover {
  background: var(--accent-soft);
}

.metrics-row.is-active,
.metrics-row[aria-current="true"] {
  background: var(--accent-soft);
}

.metrics-row.is-active td:first-child,
.metrics-row[aria-current="true"] td:first-child {
  color: var(--blue);
  font-weight: 600;
}

/* Full metric table nested in the current-result sidebar. */
.side-panel > .side-metrics {
  min-width: 0;
  margin-top: 18px;
  padding: 18px 0 0;
  border: 0;
  border-top: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.side-metrics .table-scroll {
  margin: 13px 0 0;
}

.side-metrics th,
.side-metrics td {
  padding: 9px 7px;
}

/* Pixel-detail comparison, revealed by viewer.js only while zoomed. */
.detail-panel {
  min-width: 0;
  margin-top: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #ffffff;
}

.detail-panel[hidden] {
  display: none;
}

.detail-panel__header {
  display: flex;
  min-height: 62px;
  padding: 13px 18px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--border);
}

.detail-panel__header > div {
  min-width: 0;
}

.detail-panel__header h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 0.98rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.detail-panel__header .panel-note {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 0.72rem;
  line-height: 1.45;
}

.detail-panel__position {
  flex: 0 0 auto;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
  background: var(--bg);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.detail-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  padding: 16px;
  gap: 11px;
}

.detail-card {
  min-width: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-soft);
  background: #ffffff;
  cursor: pointer;
  text-align: left;
  transition: border-color 150ms ease, color 150ms ease, background 150ms ease;
}

.detail-card:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--accent-soft);
}

.detail-card.is-active,
.detail-card[aria-current="true"] {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--blue) inset;
}

.detail-frame {
  display: grid;
  aspect-ratio: 4 / 3;
  place-items: center;
  overflow: hidden;
  background: #05070a;
  background-repeat: no-repeat;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
  -ms-interpolation-mode: nearest-neighbor;
}

.detail-frame img,
.detail-frame canvas {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
  -ms-interpolation-mode: nearest-neighbor;
}

.detail-title {
  display: block;
  overflow: hidden;
  padding: 9px 10px 10px;
  font-family: var(--display);
  font-size: 0.72rem;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Scene overview --------------------------------------------------------- */

.overview-page {
  display: grid;
  min-height: 100vh;
  grid-template-rows: auto 1fr auto;
}

.overview-header,
.viewer-header,
.site-footer {
  width: min(calc(100% - 56px), var(--content));
  margin-inline: auto;
}

.overview-header {
  padding: clamp(52px, 7vw, 84px) 0 clamp(30px, 4vw, 44px);
  text-align: center;
}

.overview-header h1 {
  max-width: 920px;
  margin-inline: auto;
}

.overview-lead {
  max-width: 670px;
  margin: 18px auto 0;
  color: var(--text-soft);
  font-size: clamp(0.96rem, 1.5vw, 1.12rem);
  line-height: 1.65;
}

.overview-note {
  max-width: 670px;
  margin: 8px auto 0;
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.overview-actions {
  display: flex;
  margin-top: 24px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.overview-actions .overview-summary {
  margin-top: 0;
}

.overview-actions .overview-summary,
.overview-actions .overview-home-link {
  min-height: 40px;
  padding: 8px 13px;
  font-size: 0.76rem;
  line-height: 1.5;
}

.overview-home-link {
  display: inline-flex;
  width: max-content;
  margin: 0;
  text-align: left;
}

.overview-summary {
  display: inline-flex;
  margin-top: 24px;
  padding: 9px 13px;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
  background: #ffffff;
  font-size: 0.76rem;
  font-variant-numeric: tabular-nums;
}

.overview-summary strong {
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 700;
}

.overview-summary span {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(330px, 100%), 1fr));
  padding-bottom: clamp(38px, 7vw, 88px);
  gap: 18px;
  align-content: start;
}

.scene-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: inherit;
  background: #ffffff;
  box-shadow: none;
  text-decoration: none;
  transform: translateY(0);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.scene-card:hover {
  border-color: var(--blue);
  box-shadow: none;
  transform: none;
}

.scene-card:focus-visible {
  outline: 3px solid rgba(18, 102, 212, 0.35);
  outline-offset: 4px;
}

.scene-card__image {
  position: relative;
  display: grid;
  aspect-ratio: 16 / 9;
  place-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: #05070a;
}

.scene-card__image::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 58%, rgba(3, 5, 8, 0.45));
  content: "";
  pointer-events: none;
}

.scene-card__image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 350ms cubic-bezier(0.2, 0.7, 0.2, 1), filter 180ms ease;
}

.scene-card:hover .scene-card__image img {
  filter: none;
  transform: none;
}

.scene-card__count {
  position: absolute;
  z-index: 2;
  top: 12px;
  right: 12px;
  padding: 6px 9px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.88);
  background: rgba(6, 9, 13, 0.72);
  box-shadow: none;
  backdrop-filter: blur(9px);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.035em;
}

.scene-card__body {
  display: flex;
  min-height: 160px;
  padding: 19px 20px 20px;
  flex-direction: column;
  align-items: flex-start;
}

.scene-card__body h2 {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.25;
}

.scene-card__body p {
  display: -webkit-box;
  max-width: 100%;
  margin: 8px 0 18px;
  overflow: hidden;
  color: var(--text-muted);
  font-size: 0.72rem;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.scene-card__best {
  display: inline-flex;
  max-width: 100%;
  margin-top: auto;
  padding: 6px 9px;
  overflow: hidden;
  border: 1px solid #cfe0f5;
  border-radius: 4px;
  color: var(--blue);
  background: var(--accent-soft);
  font-size: 0.65rem;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-footer {
  padding: 18px 0 28px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.7rem;
  line-height: 1.5;
  text-align: center;
}

/* Viewer header and in-stage help --------------------------------------- */

.viewer-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: end;
  gap: clamp(18px, 3vw, 40px);
  border-bottom: 1px solid var(--border);
}

.back-link {
  display: inline-flex;
  min-height: 34px;
  padding: 7px 11px;
  align-items: center;
  align-self: end;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--blue);
  background: #ffffff;
  font-size: 0.74rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: color 150ms ease, border-color 150ms ease, background 150ms ease;
}

.back-link:hover {
  border-color: var(--blue);
  color: #ffffff;
  background: var(--blue);
}

.viewer-help {
  max-width: 340px;
  margin: 0 0 3px;
  color: var(--text-muted);
  font-size: 0.7rem;
  line-height: 1.55;
  text-align: right;
}

.stage-overlay {
  position: absolute;
  z-index: 5;
  right: 12px;
  bottom: 12px;
  display: flex;
  align-items: center;
  gap: 7px;
  pointer-events: none;
}

.stage-overlay #zoom-readout,
.stage-overlay > span {
  min-width: 52px;
  padding: 6px 9px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 4px;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(6, 9, 13, 0.72);
  box-shadow: none;
  backdrop-filter: blur(9px);
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.empty-state {
  padding: 60px 24px;
  color: var(--text-muted);
  text-align: center;
}

.noscript-message {
  width: min(760px, calc(100% - 56px));
  margin: 40px auto;
  padding: 18px;
  border: 1px solid #f2b8b5;
  border-radius: 5px;
  color: #8f1d16;
  background: #fff5f4;
}

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

@media (max-width: 1180px) {
  .viewer-grid,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .side-panel,
  .metrics-panel {
    display: grid;
    grid-template-columns: minmax(180px, 0.8fr) minmax(300px, 1.2fr);
    gap: 18px;
  }

  .metric-cards,
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 0;
  }

  .shortcut-list,
  .controls-list {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 0;
  }

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

  .side-panel > .side-metrics {
    grid-column: 1 / -1;
  }

  .viewer-header {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .viewer-help {
    grid-column: 1 / -1;
    max-width: none;
    text-align: left;
  }
}

@media (max-width: 680px) {
  .page-shell,
  .viewer-shell,
  main,
  .overview-header,
  .viewer-header,
  .site-footer {
    width: min(calc(100% - 34px), var(--content));
  }

  .page-header,
  .viewer-header,
  header[role="banner"] {
    padding-top: 28px;
  }

  .viewer-grid,
  .content-grid,
  .lower-grid {
    gap: 11px;
  }

  .overview-header {
    padding-top: 42px;
  }

  .overview-summary {
    margin-top: 19px;
  }

  .scene-grid {
    gap: 12px;
  }

  .scene-card {
    border-radius: 5px;
  }

  .scene-card__body {
    min-height: 145px;
    padding: 16px;
  }

  .viewer-header {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .back-link {
    justify-self: start;
  }

  .viewer-help {
    grid-column: auto;
  }

  .stage-overlay {
    right: 9px;
    bottom: 9px;
  }

  .viewer-panel,
  .image-panel,
  .side-panel,
  .metrics-panel,
  .thumbnail-panel,
  .table-panel,
  .card {
    border-radius: 5px;
  }

  .viewer-toolbar,
  .image-toolbar {
    min-height: 58px;
    padding: 10px 11px 10px 14px;
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .toolbar-actions {
    width: 100%;
    justify-content: flex-start;
  }

  #reset-view {
    padding-inline: 9px;
    font-size: 0.74rem;
  }

  #image-stage {
    height: min(61vh, 610px);
    min-height: 270px;
  }

  #method-tabs {
    min-height: 56px;
    padding: 9px;
  }

  .method-tab {
    min-height: 36px;
    padding: 7px 10px;
  }

  .side-panel,
  .metrics-panel {
    display: block;
    padding: 15px;
  }

  .side-panel > .side-metrics {
    display: block;
    margin-top: 15px;
    padding-top: 15px;
  }

  .metric-cards,
  .metric-grid {
    margin-top: 14px;
  }

  .shortcut-list,
  .controls-list {
    grid-template-columns: 1fr;
    margin-top: 15px;
  }

  .thumbnail-panel,
  .table-panel {
    padding: 15px;
  }

  #thumbnail-strip {
    display: flex;
    margin-right: -15px;
    padding-right: 15px;
    overflow-x: auto;
    scroll-snap-type: x proximity;
  }

  .thumbnail-button {
    flex: 0 0 150px;
    scroll-snap-align: start;
  }

  .detail-panel__header {
    min-height: 0;
    padding: 13px 14px;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 9px 14px;
  }

  .detail-panel__position {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .detail-strip {
    display: flex;
    padding: 12px;
    overflow-x: auto;
    scroll-snap-type: x proximity;
    scrollbar-color: var(--border-strong) transparent;
    scrollbar-width: thin;
  }

  .detail-card {
    flex: 0 0 min(72vw, 230px);
    scroll-snap-align: start;
  }

  .lower-grid {
    padding-bottom: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  :root {
    color-scheme: light;
  }

  body {
    color: #111;
    background: #fff;
  }

  .viewer-panel,
  .image-panel,
  .side-panel,
  .metrics-panel,
  .thumbnail-panel,
  .table-panel,
  .card {
    border-color: #d8d8d8;
    background: #fff;
    box-shadow: none;
  }

  #image-stage {
    height: auto;
    min-height: 0;
    background: #eee;
  }

  #main-image {
    width: 100%;
    max-height: none;
    transform: none !important;
  }

  #method-tabs,
  .shortcut-list,
  .controls-list,
  #reset-view,
  #zoom-readout {
    display: none;
  }
}