:root {
  color-scheme: dark;
  --bg: oklch(.16 .006 240);
  --panel: oklch(.2 .006 240);
  --panel-hover: oklch(.23 .006 240);
  --preview: oklch(.175 .006 240);
  --skeleton: oklch(.26 .006 240);
  --ink: oklch(.96 .008 95);
  --muted: oklch(.78 .012 240);
  --faint: oklch(.7 .012 240);
  --line: oklch(.34 .008 240);
  --line-strong: oklch(.5 .008 240);
  --accent: oklch(.86 .08 210);
  --error: oklch(.78 .1 25);
  --button: oklch(.92 .008 95);
  --button-ink: oklch(.19 .006 240);
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --text-caption: .75rem;
  --text-meta: .8125rem;
  --text-ui: .875rem;
  --text-body: 1rem;
  --text-brand: 1.125rem;
  --text-title: clamp(2rem, 4vw, 3.25rem);
  --z-header: 100;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; margin: 0; }
body {
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
a {
  color: inherit;
  text-decoration-skip-ink: auto;
  text-decoration-thickness: from-font;
  text-underline-position: from-font;
}
button, input { font: inherit; }
button { touch-action: manipulation; user-select: none; }
input { caret-color: var(--accent); }
::selection { background: oklch(.98 0 0 / .14); }
h1, h2, h3 { text-wrap: balance; }
[id] { scroll-margin-top: 5rem; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-header {
  position: sticky;
  z-index: var(--z-header);
  top: 0;
  isolation: isolate;
  display: flex;
  min-height: 4rem;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1rem, 3vw, 2.5rem);
  border-bottom: 1px solid var(--line);
  background: oklch(.16 .006 240 / .92);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  min-height: 44px;
  gap: .55rem;
  align-items: center;
  font-family: Georgia, "Times New Roman", serif;
  font-size: var(--text-brand);
  letter-spacing: .01em;
  text-decoration: none;
}

.brand__sigil { color: var(--accent); font-size: var(--text-caption); pointer-events: none; user-select: none; }
.app-header__meta { display: flex; gap: .75rem; align-items: center; }
.app-header__meta form { margin: 0; }
.view-only {
  color: var(--faint);
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.logout,
.empty-state button {
  min-width: 44px;
  min-height: 44px;
  padding: 0 .85rem;
  border: 1px solid var(--line-strong);
  border-radius: .45rem;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: var(--text-ui);
  font-weight: var(--weight-medium);
  transition: color 150ms ease-out, background-color 150ms ease-out, border-color 150ms ease-out, transform 100ms ease-out;
}

.logout:hover,
.empty-state button:hover { border-color: var(--line-strong); background: var(--panel); color: var(--ink); }
.logout:active,
.empty-state button:active,
.filters button:active,
.password-row button:active { transform: scale(.96); }

.asset-app {
  width: min(100%, 104rem);
  margin: 0 auto;
  padding: clamp(2rem, 4vw, 3.75rem) clamp(1rem, 3vw, 2.5rem) calc(4rem + env(safe-area-inset-bottom));
}

.page-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 2rem;
}

h1 {
  margin: 0;
  font-size: var(--text-title);
  font-weight: var(--weight-medium);
  letter-spacing: -.04em;
  line-height: 1.1;
}

.page-heading__intro {
  margin: .65rem 0 0;
  max-width: 65ch;
  color: var(--muted);
  font-size: var(--text-body);
  line-height: 1.55;
  text-wrap: pretty;
}

.asset-count {
  min-width: 9rem;
  margin: 0;
  color: var(--muted);
  font-size: var(--text-meta);
  font-variant-numeric: tabular-nums;
  text-align: end;
}

.toolbar {
  display: flex;
  gap: .75rem;
  align-items: center;
  margin-bottom: 1.25rem;
}

.search {
  display: flex;
  width: min(100%, 20rem);
  flex: 0 0 auto;
  gap: .6rem;
  align-items: center;
  padding: 0 .8rem;
  border: 1px solid var(--line-strong);
  border-radius: .5rem;
  background: var(--panel);
  color: var(--faint);
  transition: border-color 150ms ease-out, box-shadow 150ms ease-out;
}

.search > span[aria-hidden] { position: relative; top: -1px; pointer-events: none; user-select: none; }
.search:focus-within { border-color: var(--line-strong); box-shadow: 0 0 0 3px oklch(.98 0 0 / .08); }
.search input {
  width: 100%;
  height: 44px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: var(--text-body);
}
.search input::placeholder { color: var(--faint); }

.filters {
  display: flex;
  gap: .35rem;
  overflow-x: auto;
  padding: .15rem 0;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.filters::-webkit-scrollbar { height: 8px; }
.filters::-webkit-scrollbar-thumb { border-radius: 4px; background: var(--line-strong); }
.filters button {
  min-height: 40px;
  flex: 0 0 auto;
  padding: 0 .75rem;
  border: 1px solid transparent;
  border-radius: .45rem;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: var(--text-ui);
  font-weight: var(--weight-medium);
  transition: color 150ms ease-out, background-color 150ms ease-out, border-color 150ms ease-out, transform 100ms ease-out;
}
.filters button:hover { background: var(--panel); color: var(--ink); }
.filters button.is-active { border-color: var(--line-strong); background: var(--panel); color: var(--ink); }

.asset-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 34rem), 1fr));
  align-items: start;
  gap: 1rem;
  min-height: 22rem;
}

.asset-group {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: .7rem;
  background: var(--panel);
  transition: background-color 150ms ease-out, border-color 150ms ease-out;
}
.asset-group:hover { background: var(--panel-hover); }

.asset-group__header {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .9rem 1rem;
}
.asset-group__header h2 {
  margin: 0;
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  letter-spacing: -.015em;
}
.asset-group__key {
  margin: .25rem 0 0;
  overflow: hidden;
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: var(--text-caption);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.asset-group__count {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: var(--text-caption);
  font-variant-numeric: tabular-nums;
}
.asset-group__sequences { border-top: 1px solid var(--line); }

.asset-sequence { padding: .8rem 1rem 1rem; }
.asset-sequence + .asset-sequence { border-top: 1px solid var(--line); }
.asset-sequence__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .65rem;
}
.asset-sequence__header h3 {
  margin: 0;
  color: var(--muted);
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.asset-sequence__header span {
  color: var(--faint);
  font-size: var(--text-caption);
  font-variant-numeric: tabular-nums;
}
.asset-sequence__frames {
  display: flex;
  gap: .55rem;
  overflow-x: auto;
  padding: 0 0 .35rem;
  scrollbar-color: var(--line-strong) transparent;
  scrollbar-width: thin;
  scroll-snap-type: x proximity;
}
.asset-sequence__frames::-webkit-scrollbar { height: 8px; }
.asset-sequence__frames::-webkit-scrollbar-thumb { border-radius: 4px; background: var(--line-strong); }

.asset-frame {
  width: 7.25rem;
  min-width: 7.25rem;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: .5rem;
  background: var(--preview);
  scroll-snap-align: start;
}
.asset-frame__preview {
  display: grid;
  aspect-ratio: 1;
  place-items: center;
  padding: .65rem;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-color: var(--preview);
  background-image:
    linear-gradient(45deg, oklch(.98 0 0 / .025) 25%, transparent 25%),
    linear-gradient(-45deg, oklch(.98 0 0 / .025) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, oklch(.98 0 0 / .025) 75%),
    linear-gradient(-45deg, transparent 75%, oklch(.98 0 0 / .025) 75%);
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-size: 16px 16px;
}
.asset-frame__preview img {
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
  pointer-events: none;
  user-select: none;
}
.asset-frame figcaption { min-width: 0; padding: .5rem .55rem .55rem; }
.asset-frame figcaption strong,
.asset-frame figcaption span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.asset-frame figcaption strong { font-size: var(--text-caption); font-weight: var(--weight-medium); }
.asset-frame figcaption span {
  margin-top: .2rem;
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .6875rem;
}

.asset-skeleton {
  min-height: 16rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: .7rem;
  background: var(--panel);
}
.asset-skeleton__line { display: block; width: 42%; height: .6rem; margin: 1rem 1rem .55rem; border-radius: .2rem; background: var(--skeleton); }
.asset-skeleton__line--short { width: 24%; height: .4rem; margin-top: 0; margin-bottom: 1.2rem; }
.asset-skeleton__frames { display: flex; gap: .55rem; padding: .8rem 1rem 1rem; border-top: 1px solid var(--line); }
.asset-skeleton__frames i { display: block; width: 7.25rem; max-width: 18%; aspect-ratio: 1; border-radius: .5rem; background: var(--preview); }

.empty-state {
  display: grid;
  min-height: 22rem;
  place-content: center;
  justify-items: center;
  padding: 2rem;
  border: 1px dashed var(--line);
  border-radius: .55rem;
  color: var(--muted);
  text-align: center;
}
.empty-state[hidden] { display: none; }
.empty-state h2 { margin: 0; color: var(--ink); font-size: var(--text-body); font-weight: var(--weight-semibold); }
.empty-state p { margin: .5rem 0 1.25rem; font-size: var(--text-ui); line-height: 1.5; text-wrap: pretty; }

.login-page { display: grid; min-height: 100svh; place-items: stretch; }
.login-shell {
  display: grid;
  width: 100%;
  max-width: 72rem;
  min-height: 100svh;
  grid-template-rows: auto 1fr auto;
  margin: 0 auto;
  padding: max(1.25rem, env(safe-area-inset-top)) max(1.25rem, env(safe-area-inset-right)) max(1.25rem, env(safe-area-inset-bottom)) max(1.25rem, env(safe-area-inset-left));
}
.login-card { width: min(100%, 25rem); align-self: center; }
.login-card h1 { font-size: clamp(2rem, 7vw, 2.75rem); }
.login-card__intro { max-width: 45ch; margin: .75rem 0 1.75rem; color: var(--muted); font-size: var(--text-body); line-height: 1.55; text-wrap: pretty; }
.login-form label {
  display: block;
  margin-bottom: .45rem;
  color: var(--muted);
  font-size: var(--text-meta);
  font-weight: var(--weight-medium);
}
.password-row { display: grid; grid-template-columns: 1fr auto; gap: .5rem; }
.password-row input {
  min-width: 0;
  height: 44px;
  padding: 0 .8rem;
  border: 1px solid var(--line-strong);
  border-radius: .45rem;
  outline: 0;
  background: var(--panel);
  color: var(--ink);
  transition: border-color 150ms ease-out, box-shadow 150ms ease-out;
}
.password-row input:focus { border-color: var(--line-strong); box-shadow: 0 0 0 3px oklch(.98 0 0 / .08); }
.password-row button {
  min-width: 44px;
  min-height: 44px;
  padding-block: 0;
  padding-inline: 1rem .9rem;
  border: 1px solid var(--button);
  border-radius: .45rem;
  background: var(--button);
  color: var(--button-ink);
  cursor: pointer;
  font-size: var(--text-ui);
  font-weight: var(--weight-semibold);
  transition: background-color 150ms ease-out, border-color 150ms ease-out, transform 100ms ease-out;
}
.password-row button:hover { border-color: var(--ink); background: var(--ink); }
.form-error { margin: -.75rem 0 1rem; color: var(--error); font-size: var(--text-meta); line-height: 1.5; }
.login-footer {
  align-self: end;
  margin: 0;
  color: var(--faint);
  font-size: var(--text-caption);
  font-weight: var(--weight-medium);
  letter-spacing: .08em;
  text-transform: uppercase;
}

button:focus-visible,
a:focus-visible { outline: 2px solid oklch(.98 0 0); outline-offset: 3px; }

@media (max-width: 720px) {
  .view-only { display: none; }
  .page-heading { display: block; }
  .asset-count { min-width: 0; margin-top: .75rem; text-align: start; }
  .toolbar { display: block; }
  .search { width: 100%; }
  .filters { margin-top: .6rem; }
  .filters button { min-height: 44px; }
  .asset-groups { grid-template-columns: 1fr; }
  .search input,
  .password-row input { font-size: var(--text-body); }
}

@media (min-width: 721px) {
  .search input,
  .password-row input { font-size: var(--text-ui); }
}

@media (max-width: 430px) {
  .password-row { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}