:root {
  --background: #f4f4f1;
  --surface: #ffffff;
  --text: #1c1c1a;
  --quiet: #66665f;
  --line: #d9d9d2;
  --accent: #2f5fd0;
  --accent-text: #ffffff;
  --stage: #121212;
  --warning: #9a3412;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #161615;
    --surface: #1f1f1d;
    --text: #e9e9e4;
    --quiet: #9d9d95;
    --line: #34342f;
    --accent: #7c9cf0;
    --accent-text: #0d0d0c;
    --stage: #0a0a0a;
    --warning: #fb923c;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  display: flex;
  flex-direction: column;
  background: var(--background);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}

code,
pre,
textarea {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 650;
  margin-right: 8px;
}

.spacer {
  flex: 1;
}

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

.source {
  margin-left: 4px;
}

button,
select,
.button {
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
}

button:hover:not(:disabled),
.button:hover {
  border-color: var(--quiet);
}

button:disabled {
  opacity: 0.45;
  cursor: default;
}

.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
}

.button:focus-within,
button:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

main {
  flex: 1;
  display: flex;
  min-height: 0;
}

.stage {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  background: var(--stage);
  overflow: hidden;
}

.stage.dropping {
  outline: 3px dashed var(--accent);
  outline-offset: -12px;
}

#screen {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.welcome {
  position: absolute;
  inset: auto 16px 24px;
  text-align: center;
  color: #d8d8d0;
}

.welcome .quiet {
  color: #9a9a92;
}

.panel {
  width: 320px;
  flex-shrink: 0;
  overflow-y: auto;
  padding: 12px 16px 24px;
  background: var(--surface);
  border-left: 1px solid var(--line);
}

.panel h2,
.panel summary {
  font-size: 13px;
  font-weight: 650;
  margin: 12px 0 6px;
}

.panel summary {
  cursor: pointer;
}

.panel details {
  border-top: 1px solid var(--line);
  padding-bottom: 6px;
}

.quiet {
  color: var(--quiet);
  font-size: 13px;
}

.message {
  margin: 0 0 8px;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.message.error {
  color: var(--warning);
  border-color: currentColor;
}

.facts {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 12px;
  margin: 0;
}

.facts dt {
  color: var(--quiet);
}

.facts dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 6px 0;
}

.row input[type="range"] {
  flex: 1;
}

.keys {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 8px;
}

.keys th {
  text-align: left;
  font-weight: 600;
  color: var(--quiet);
}

.keys td,
.keys th {
  padding: 2px 4px;
}

.keys button {
  width: 100%;
  padding: 2px 6px;
  font-size: 13px;
}

.keys tr.held td:first-child {
  color: var(--accent);
  font-weight: 650;
}

.files {
  list-style: none;
  padding: 0;
  margin: 0;
}

.files li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 2px 0;
}

.files span {
  flex: 1;
  overflow-wrap: anywhere;
}

.files button {
  padding: 0 8px;
}

textarea {
  width: 100%;
  font-size: 12px;
  color: var(--text);
  background: var(--background);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px;
  resize: vertical;
}

.answer {
  max-height: 320px;
  overflow: auto;
  font-size: 12px;
  background: var(--background);
  border-radius: 6px;
  padding: 6px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.answer:empty {
  display: none;
}

@media (max-width: 760px) {
  main {
    flex-direction: column;
  }

  .stage {
    min-height: 60vh;
  }

  .panel {
    width: auto;
    border-left: none;
    border-top: 1px solid var(--line);
  }
}