:root {
  color-scheme: light dark;
  --brand-dark-bg: #413f46;
  --brand-dark-bg-weak: #312f36;
  --background: #f4f6f8;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --text: #172033;
  --muted: #667085;
  --border: #d8dee8;
  --column-border: #e9edf3;
  --accent: #2457d6;
  --accent-soft: #e9efff;
  --error: #b42318;
  --warning: #9a6700;
  --icon-shadow: rgb(23 32 51 / 24%);
  --subtitle: #7c3aed;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --background: var(--brand-dark-bg-weak);
    --surface: var(--brand-dark-bg);
    --surface-alt: var(--brand-dark-bg-weak);
    --text: #f2eff4;
    --muted: #c0bac4;
    --border: #625e68;
    --column-border: #55515a;
    --accent: #c9b3ec;
    --accent-soft: #514b5c;
    --error: #ffaaa3;
    --warning: #f2cc60;
    --icon-shadow: rgb(0 0 0 / 48%);
    --subtitle: #c9b3ec;
  }
}

:root[data-theme="dark"] {
  --background: var(--brand-dark-bg-weak);
  --surface: var(--brand-dark-bg);
  --surface-alt: var(--brand-dark-bg-weak);
  --text: #f2eff4;
  --muted: #c0bac4;
  --border: #625e68;
  --column-border: #55515a;
  --accent: #c9b3ec;
  --accent-soft: #514b5c;
  --error: #ffaaa3;
  --warning: #f2cc60;
  --icon-shadow: rgb(0 0 0 / 48%);
  --subtitle: #c9b3ec;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  margin: 0;
  padding-bottom: 4rem;
  background: var(--background);
  color: var(--text);
  font-family: sans-serif;
}

body.raw-page { padding: 0; }

.raw-output {
  margin: 0;
  padding: 1rem;
  color: var(--text);
  font: .875rem/1.5 "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  white-space: pre;
}

.page-header,
.shell {
  width: min(96rem, calc(100% - 2rem));
  margin-inline: auto;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0;
}

.title-group {
  display: flex;
  align-items: center;
  gap: .8rem;
  min-width: 0;
}

.title-icon {
  width: clamp(3rem, 6vw, 4.25rem);
  height: auto;
  flex: none;
  filter: drop-shadow(3px 4px 2px var(--icon-shadow));
  image-rendering: crisp-edges;
  image-rendering: pixelated;
}

.title-stack { min-width: 0; }

.title-text {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  min-width: 0;
}

.subtitle {
  margin: 0;
  color: var(--subtitle);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
}

.subtitle a { color: inherit; }
.subtitle a:hover { color: var(--accent); }

.random-byline {
  margin: .2rem 0 0;
  color: var(--subtitle);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .04em;
}

.header-actions {
  display: flex;
  gap: .5rem;
  flex: none;
}

.theme-toggle,
.share-link {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  place-items: center;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

.theme-toggle:hover,
.share-link:hover { background: var(--accent-soft); }
.theme-toggle:focus-visible,
.share-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-icon,
.share-icon {
  width: 1.2rem;
  height: 1.2rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.theme-icon--sun { display: none; }
:root[data-theme="dark"] .theme-icon--moon { display: none; }
:root[data-theme="dark"] .theme-icon--sun { display: block; }

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  letter-spacing: -.035em;
}

h2 {
  margin: 0;
  font-size: .875rem;
}

.controls {
  display: grid;
  grid-template-columns: minmax(14rem, 18rem) minmax(20rem, 1fr);
  align-items: start;
  gap: 1rem;
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 12px 32px rgb(16 24 40 / 8%);
}

.control label {
  display: block;
  margin-bottom: .45rem;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.input-help {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.input-help .hint { flex: 1; }

.input-actions {
  display: flex;
  gap: .4rem;
}

.input-button {
  margin-top: .45rem;
  padding: .2rem .45rem;
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--muted);
  cursor: pointer;
  font: 700 .68rem sans-serif;
  letter-spacing: .04em;
  text-transform: uppercase;
}

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

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

.control-column {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

textarea,
select,
.offset-input {
  width: 100%;
  min-height: 2.65rem;
  padding: .55rem .7rem;
  border: 1px solid var(--border);
  border-radius: 0;
  outline: none;
  background: var(--surface-alt);
  color: var(--text);
  font: .875rem sans-serif;
}

textarea {
  min-height: 6.5rem;
  resize: vertical;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  letter-spacing: .025em;
  line-height: 1.5;
}

.offset-input {
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  text-transform: uppercase;
}

textarea:focus,
select:focus,
.offset-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.hint {
  margin: .45rem 0 0;
  color: var(--muted);
  font-size: .75rem;
}

code { font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace; }

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .35rem .6rem;
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 10;
  padding: .7rem 1rem;
  border-top: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: .75rem;
  text-align: center;
}

.footer-separator { color: var(--border); }

.site-footer a {
  color: var(--text);
  font-weight: 700;
}

.site-footer a:hover { color: var(--accent); }

.site-footer .powered-by { color: var(--subtitle); }

.url-warning,
.panic-banner,
.cpu-warning {
  margin: 0 0 1rem;
  padding: .75rem 1rem;
  border: 1px solid var(--error);
  background: color-mix(in srgb, var(--error) 12%, var(--surface));
  color: var(--text);
  font-size: .875rem;
}

.url-warning[hidden],
.panic-banner[hidden],
.cpu-warning[hidden] { display: none; }

.cpu-warning {
  border-color: var(--warning);
  background: color-mix(in srgb, var(--warning) 12%, var(--surface));
}

.panic-banner a {
  color: var(--error);
  font-weight: 700;
}

.results {
  overflow: auto;
  min-height: 20rem;
  margin-bottom: 3rem;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 12px 32px rgb(16 24 40 / 8%);
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .8rem .75rem;
  border-bottom: 1px solid var(--border);
}

.results-toolbar {
  display: flex;
  justify-content: flex-end;
  padding: .45rem .75rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-alt);
}

.copy-controls {
  display: flex;
  width: 100%;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: .4rem .7rem;
  color: var(--muted);
  font-size: .75rem;
}

.copy-controls label {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  cursor: pointer;
}

.copy-label {
  color: var(--text);
  font-weight: 700;
}

.copy-button {
  padding: .2rem .55rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font: 700 .68rem sans-serif;
  text-transform: uppercase;
}

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

.copy-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle,
.share-link,
.input-button,
.copy-button {
  transition:
    background-color 60ms ease,
    border-color 60ms ease,
    color 60ms ease,
    transform 60ms ease;
}

.theme-toggle:active,
.share-link:active,
.input-button:active,
.copy-button:active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  transform: translateY(1px) scale(.97);
}

.status {
  color: var(--muted);
  font-size: .75rem;
}

.status--ready { color: var(--accent); }
.status--pending { color: var(--warning); }
.status--error { color: var(--error); }

table {
  width: 100%;
  min-width: 43rem;
  border-collapse: collapse;
  font-size: .875rem;
}

caption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.offset-column { width: 1%; }
.bytes-column { width: 22rem; }

th,
td {
  padding: .4rem .75rem;
  border-right: 1px solid var(--column-border);
  text-align: left;
  vertical-align: top;
}

tr > :last-child { border-right: 0; }
tbody tr:hover > * { background: var(--accent-soft); }

thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--surface-alt);
  color: var(--muted);
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.mono {
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  white-space: pre;
}

.offset,
.bytes { white-space: nowrap; }
.offset { color: var(--accent); font-weight: 400; }
.decode-error > *,
.error-row > * { color: var(--error); }
.empty-row > * { height: 15rem; color: var(--muted); }

@media (max-width: 768px) {
  .footer-mobile-hidden { display: none; }

  table { min-width: 0; }

  .bytes-column,
  thead th:nth-child(2),
  tbody td:nth-child(2) {
    display: none;
  }
}

@media (max-width: 700px) {
  .controls { grid-template-columns: 1fr; }
}