:root {
  color-scheme: light dark;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #111827;
  --muted: #5b6472;
  --border: #d8dee8;
  --accent: #1d4ed8;
  --danger: #b42318;
  --ok: #15803d;
  --warn: #a16207;
  --radius: 12px;
  --shadow: 0 1px 2px rgb(15 23 42 / 6%), 0 10px 30px rgb(15 23 42 / 5%);
  --font: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f17;
    --surface: #131a26;
    --text: #e7edf6;
    --muted: #9aa7b8;
    --border: #263142;
    --accent: #8ab4ff;
    --danger: #ff9b91;
    --ok: #4ade80;
    --warn: #facc15;
    --shadow: 0 1px 2px rgb(0 0 0 / 35%), 0 10px 30px rgb(0 0 0 / 25%);
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 var(--font);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.page {
  width: min(100% - 2rem, 72rem);
  margin: 0 auto;
  padding: clamp(1.5rem, 5vw, 4rem) 0 2rem;
  flex: 1;
}

.site-footer {
  width: min(100% - 2rem, 72rem);
  margin: 0 auto;
  padding: 1rem 0 2rem;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--surface);
  padding: 0.5rem 0.75rem;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  left: 0;
  z-index: 10;
}

.muted {
  color: var(--muted);
}

.error-card {
  max-width: 36rem;
  margin: 8vh auto 0;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgb(0 0 0 / 8%);
}

.error-card h1 {
  margin: 0.25rem 0 0.5rem;
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: -0.02em;
}

.error-code {
  margin: 0;
  color: var(--danger);
  font: 600 0.85rem/1 var(--mono);
  letter-spacing: 0.08em;
}

.error-message {
  margin: 0 0 1rem;
}

.error-card code {
  font-family: var(--mono);
  font-size: 0.85em;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: color-mix(in oklab, var(--text) 8%, transparent);
}

.button {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

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

@media (prefers-reduced-motion: no-preference) {
  .button {
    transition: border-color 120ms ease, background-color 120ms ease, box-shadow 120ms ease;
  }
}

/* ---------------------------------------------------------------------------
   Shared primitives
   --------------------------------------------------------------------------- */

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

code {
  font-family: var(--mono);
  font-size: 0.85em;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: color-mix(in oklab, var(--text) 8%, transparent);
  overflow-wrap: anywhere;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font: 600 0.72rem/1.4 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

button {
  font: inherit;
  color: inherit;
}

button.button {
  cursor: pointer;
}

.button {
  box-shadow: none;
}

.button.secondary {
  color: var(--muted);
}

.button[disabled],
.button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.button.danger {
  border-color: color-mix(in oklab, var(--danger) 45%, var(--border));
  color: var(--danger);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.1rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: color-mix(in oklab, var(--text) 4%, transparent);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}

.badge-version {
  color: var(--text);
  font-family: var(--mono);
}

.badge-dataset {
  border-color: color-mix(in oklab, var(--accent) 35%, transparent);
  color: var(--accent);
}

.badge-pinned {
  border-color: color-mix(in oklab, var(--warn) 45%, transparent);
  color: var(--warn);
}

.health-dot {
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--ok) 18%, transparent);
}

.health-dot.bad {
  background: var(--danger);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--danger) 18%, transparent);
}

/* ---------------------------------------------------------------------------
   Gallery
   --------------------------------------------------------------------------- */

.gallery-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  margin-bottom: 1.5rem;
}

.gallery-heading h1 {
  margin: 0.2rem 0 0;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.gallery-summary {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.gallery-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.gallery-hint code {
  font-size: 0.95em;
}

.gallery-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 0.5rem 0.75rem;
  margin-bottom: 1.25rem;
}

.gallery-search {
  display: grid;
  gap: 0.35rem;
  min-width: 0;
}

.gallery-search label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.gallery-search input {
  width: 100%;
  min-width: 0;
  padding: 0.62rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
}

.gallery-search input::placeholder {
  color: color-mix(in oklab, var(--muted) 75%, transparent);
}

.gallery-search input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

#gallery-search-hint {
  grid-column: 1 / -1;
}

.artifact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.artifact-card {
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.artifact-card:hover,
.artifact-card:focus-within {
  border-color: color-mix(in oklab, var(--accent) 55%, var(--border));
}

.artifact-card-link {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  height: 100%;
  padding: 1rem;
  color: inherit;
  text-decoration: none;
}

.artifact-card-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius);
}

.artifact-icon {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 10px;
  background: color-mix(in oklab, var(--accent) 12%, transparent);
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
}

.artifact-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.artifact-title {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.artifact-description {
  display: -webkit-box;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
}

.artifact-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
  margin-top: auto;
  padding-top: 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.artifact-meta time {
  white-space: nowrap;
}

.banner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  margin: 0 0 1.25rem;
  padding: 0.9rem 1.05rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.banner-error {
  border-color: color-mix(in oklab, var(--danger) 42%, var(--border));
  background: color-mix(in oklab, var(--danger) 7%, var(--surface));
}

.banner h2 {
  margin: 0.15rem 0 0.3rem;
  font-size: 1rem;
  line-height: 1.35;
}

.banner-copy {
  flex: 1 1 18rem;
  min-width: 0;
}

.banner-copy p {
  margin: 0;
  font-size: 0.88rem;
}

.banner-details {
  flex: 0 1 22rem;
  min-width: 0;
  font-size: 0.85rem;
}

.banner-details summary {
  cursor: pointer;
  font-weight: 600;
}

.banner-details ul {
  display: grid;
  gap: 0.5rem;
  margin: 0.6rem 0 0;
  padding-left: 1.1rem;
}

.banner-details li {
  overflow-wrap: anywhere;
}

.banner-error-path code {
  font-size: 0.82em;
}

.empty-state {
  padding: 2.75rem 1.25rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  text-align: center;
}

.empty-state[hidden] {
  display: none !important;
}

.empty-state h2 {
  margin: 0.25rem 0 0.6rem;
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  letter-spacing: -0.02em;
}

.empty-state p {
  max-width: 40rem;
  margin: 0.35rem auto;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.empty-state .button {
  margin-top: 0.75rem;
}

.query-echo::before {
  content: "\201C";
}

.query-echo::after {
  content: "\201D";
}

.gallery-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.5rem;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
}

.gallery-footer p {
  margin: 0;
}

.gallery-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

/* The gallery footer already carries health, count and version. */
body:has(.gallery-footer) .site-footer {
  display: none;
}

/* ---------------------------------------------------------------------------
   Viewer shell
   --------------------------------------------------------------------------- */

/* The viewer owns the viewport; hide the global page chrome when it renders. */
body:has(.viewer-shell) .site-footer {
  display: none;
}

body:has(.viewer-shell) .page {
  width: 100%;
  max-width: none;
  padding: 0;
}

.viewer-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

.viewer-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem 1rem;
  padding: 0.65rem clamp(0.75rem, 2vw, 1.25rem);
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 93%, transparent);
  backdrop-filter: blur(10px);
}

.viewer-heading {
  display: flex;
  flex: 1 1 18rem;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.viewer-back {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.3rem;
  min-height: 2.25rem;
  padding: 0.3rem 0.55rem;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
}

.viewer-back:hover {
  border-color: var(--border);
  background: var(--surface);
}

.viewer-titles {
  min-width: 0;
}

.viewer-titles h1 {
  overflow: hidden;
  margin: 0;
  font-size: clamp(1rem, 2.4vw, 1.15rem);
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.viewer-titles .eyebrow {
  overflow: hidden;
  font-size: 0.65rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.viewer-actions {
  display: flex;
  flex: 0 1 auto;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
}

.viewer-actions .button {
  padding: 0.38rem 0.65rem;
  font-size: 0.82rem;
}

.viewer-updated {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

.version-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.version-picker select {
  max-width: 9rem;
  padding: 0.34rem 0.4rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.82rem;
}

.switch[aria-checked="true"] {
  border-color: color-mix(in oklab, var(--warn) 55%, var(--border));
  background: color-mix(in oklab, var(--warn) 12%, var(--surface));
  color: var(--warn);
}

.pin-action {
  border-color: color-mix(in oklab, var(--accent) 35%, var(--border));
  color: var(--accent);
}

.pin-action[aria-busy="true"] {
  cursor: progress;
  opacity: 0.65;
}

.live-indicator {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.32rem;
  padding: 0.1rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}

.live-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--muted);
}

.live-indicator[data-state="connected"] {
  border-color: color-mix(in oklab, var(--ok) 38%, var(--border));
  color: var(--ok);
}

.live-indicator[data-state="connected"] .live-dot {
  background: var(--ok);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--ok) 16%, transparent);
}

.live-indicator[data-state="reconnecting"],
.live-indicator[data-state="offline"] {
  border-color: color-mix(in oklab, var(--warn) 45%, var(--border));
  color: var(--warn);
}

.live-indicator[data-state="reconnecting"] .live-dot,
.live-indicator[data-state="offline"] .live-dot {
  background: var(--warn);
}

.viewer-notice {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem 0.9rem;
  margin: 0;
  padding: 0.5rem clamp(0.75rem, 2vw, 1.25rem);
  border-bottom: 1px solid var(--border);
  font-size: 0.84rem;
}

.viewer-preview {
  border-bottom-color: color-mix(in oklab, var(--accent) 30%, var(--border));
  background: color-mix(in oklab, var(--accent) 7%, var(--surface));
  color: var(--text);
}

.viewer-live {
  border-bottom-color: color-mix(in oklab, var(--warn) 38%, var(--border));
  background: color-mix(in oklab, var(--warn) 10%, var(--surface));
}

.viewer-error {
  border-bottom-color: color-mix(in oklab, var(--danger) 40%, var(--border));
  background: color-mix(in oklab, var(--danger) 9%, var(--surface));
  color: var(--danger);
}

.viewer-notice .button {
  padding: 0.25rem 0.55rem;
  font-size: 0.76rem;
}

.viewer-notice[hidden] {
  display: none !important;
}

.viewer-frame {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  padding: clamp(0.5rem, 1.5vw, 1rem);
}

.viewer-frame iframe {
  flex: 1 1 auto;
  width: 100%;
  height: 100%;
  min-height: 60vh;
  min-height: 60dvh;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #ffffff;
}

.viewer-shell .banner {
  margin: 0 1rem 1rem;
}

.toast-region {
  position: fixed;
  bottom: max(1rem, env(safe-area-inset-bottom, 0px));
  left: 50%;
  z-index: 60;
  display: grid;
  gap: 0.5rem;
  width: min(100% - 2rem, 28rem);
  transform: translateX(-50%);
  pointer-events: none;
}

.toast {
  margin: 0;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 0.88rem;
  overflow-wrap: anywhere;
  pointer-events: auto;
}

.toast[data-variant="error"] {
  border-color: color-mix(in oklab, var(--danger) 45%, var(--border));
  color: var(--danger);
}

/* ---------------------------------------------------------------------------
   Settings
   --------------------------------------------------------------------------- */

.settings-shell {
  display: grid;
  gap: 1.25rem;
  max-width: 64rem;
  min-width: 0;
}

.settings-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.settings-nav a {
  color: var(--accent);
}

.settings-header h1 {
  margin: 0.2rem 0 0.35rem;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.settings-header p {
  margin: 0;
}

.settings-shell .card {
  min-width: 0;
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.settings-shell .card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}

.danger-zone {
  border-color: color-mix(in oklab, var(--danger) 40%, var(--border));
}

.settings-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: 0.85rem 1.5rem;
  margin: 0;
}

.settings-list div {
  min-width: 0;
}

.settings-list dt {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.settings-list dd {
  margin: 0.15rem 0 0;
  overflow-wrap: anywhere;
}

.settings-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0;
}

.table-wrap {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-wrap table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.table-wrap th,
.table-wrap td {
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.table-wrap thead th {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.table-wrap tbody th {
  font-weight: 600;
}

.table-wrap tbody tr:last-child th,
.table-wrap tbody tr:last-child td {
  border-bottom: 0;
}

.sha {
  font-size: 0.8em;
}

.card-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 0.6rem;
}

.settings-shell .card-heading h2 {
  margin: 0;
}

.pin-state {
  display: inline-flex;
  align-items: center;
  margin: 0.15rem 0 0.5rem;
  padding: 0.18rem 0.6rem;
  border: 1px solid color-mix(in oklab, var(--accent) 30%, var(--border));
  border-radius: 999px;
  background: color-mix(in oklab, var(--accent) 7%, var(--surface));
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
}

.settings-note {
  margin: 0.35rem 0 0.9rem;
  font-size: 0.85rem;
  line-height: 1.5;
}

.inline-status {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  overflow-wrap: anywhere;
}

.inline-status:empty {
  display: none;
}

.inline-status[data-variant="pending"] {
  color: var(--muted);
}

.inline-status[data-variant="success"] {
  color: var(--ok);
}

.inline-status[data-variant="error"] {
  color: var(--danger);
}

.version-status {
  white-space: nowrap;
}

.version-status .badge + .badge,
.version-status .badge + .muted {
  margin-left: 0.25rem;
}

.version-actions {
  white-space: nowrap;
}

.version-actions .button + .button {
  margin-left: 0.25rem;
}

.button.small {
  padding: 0.28rem 0.5rem;
  font-size: 0.78rem;
}

.badge-required {
  border-color: color-mix(in oklab, var(--warn) 48%, transparent);
  color: var(--warn);
}

.dataset-list {
  display: grid;
  gap: 0.9rem;
  margin-top: 0.9rem;
}

.dataset-card {
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: color-mix(in oklab, var(--surface) 92%, var(--bg));
}

.dataset-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.dataset-heading h3 {
  margin: 0;
  font-size: 1rem;
  overflow-wrap: anywhere;
}

.dataset-key {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.dataset-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 8rem), 1fr));
  gap: 0.6rem 1rem;
  margin: 0.85rem 0;
}

.dataset-stats div {
  min-width: 0;
}

.dataset-stats dt {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.dataset-stats dd {
  margin: 0.1rem 0 0;
  overflow-wrap: anywhere;
}

.dataset-warning {
  margin: 0.5rem 0;
  padding: 0.5rem 0.7rem;
  border: 1px solid color-mix(in oklab, var(--warn) 48%, var(--border));
  border-radius: 8px;
  background: color-mix(in oklab, var(--warn) 10%, var(--surface));
  color: var(--text);
  font-size: 0.82rem;
}

.dataset-file {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
  margin: 0.5rem 0;
}

.dataset-file label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
}

.dataset-file-input {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  font: inherit;
  font-size: 0.82rem;
}

.dataset-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.4rem;
}

.dataset-progress {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.dataset-progress[hidden] {
  display: none;
}

.dataset-progress progress {
  width: 10rem;
  max-width: 100%;
  height: 0.6rem;
}

.dataset-error {
  margin: 0.5rem 0 0;
  padding: 0.5rem 0.7rem;
  border: 1px solid color-mix(in oklab, var(--danger) 45%, var(--border));
  border-radius: 8px;
  background: color-mix(in oklab, var(--danger) 9%, var(--surface));
  color: var(--danger);
  font-size: 0.82rem;
  overflow-wrap: anywhere;
}

.dataset-error[hidden] {
  display: none;
}

.dataset-confirm {
  margin-top: 0.6rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid color-mix(in oklab, var(--danger) 40%, var(--border));
  border-radius: 8px;
  background: color-mix(in oklab, var(--danger) 6%, var(--surface));
}

.dataset-confirm[hidden] {
  display: none;
}

.dataset-confirm p {
  margin: 0 0 0.5rem;
  font-size: 0.82rem;
}

.dataset-confirm-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.dataset-status {
  margin: 0.5rem 0 0;
  color: var(--ok);
  font-size: 0.82rem;
}

.dataset-status[hidden] {
  display: none;
}

.dataset-load-error {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.dataset-loading {
  margin: 0;
}

.danger-form {
  margin-top: 0.75rem;
}

.danger-form > label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
}

.danger-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.danger-row input {
  flex: 1 1 14rem;
  min-width: 0;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
}

.danger-row input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.warning-note {
  margin: 0 0 0.8rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid color-mix(in oklab, var(--warn) 45%, var(--border));
  border-radius: 8px;
  background: color-mix(in oklab, var(--warn) 9%, var(--surface));
  font-size: 0.84rem;
}

@media (max-width: 640px) {
  .dataset-actions .button,
  .danger-row .button {
    flex: 1 1 auto;
  }
}

/* ---------------------------------------------------------------------------
   Small screens (320 px and up)
   --------------------------------------------------------------------------- */

@media (max-width: 640px) {
  .viewer-heading {
    flex-basis: 100%;
  }

  .viewer-actions {
    flex: 1 1 100%;
  }

  .viewer-actions .button {
    flex: 0 1 auto;
  }

  .viewer-frame {
    padding: 0.5rem;
  }

  .viewer-frame iframe {
    min-height: calc(100vh - 11rem);
    min-height: calc(100dvh - 11rem);
  }

  .gallery-toolbar {
    grid-template-columns: minmax(0, 1fr);
  }

  .gallery-toolbar > .button {
    grid-column: 1;
    justify-self: start;
  }

  .gallery-footer {
    gap: 0.4rem 1rem;
  }

  .settings-shell .card {
    padding: 1rem;
  }
}

@media (max-width: 400px) {
  .page {
    width: calc(100% - 1.5rem);
  }

  .viewer-header {
    padding: 0.5rem 0.6rem;
  }

  .viewer-actions .button {
    padding: 0.34rem 0.5rem;
    font-size: 0.78rem;
  }

  .viewer-updated {
    font-size: 0.72rem;
  }

  .version-picker {
    font-size: 0.72rem;
  }

  .version-picker select {
    max-width: 7.5rem;
  }

  .live-indicator-text {
    display: none;
  }

  .viewer-notice {
    font-size: 0.8rem;
  }

  .toast-region {
    width: calc(100% - 1.5rem);
  }
}

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