:root {
  color-scheme: light;
  --zqlu-bg: #f3efe4;
  --zqlu-panel: rgba(255, 252, 244, 0.92);
  --zqlu-ink: #1d1b18;
  --zqlu-muted: #665f52;
  --zqlu-accent: #0d6b63;
  --zqlu-accent-strong: #084740;
  --zqlu-accent-soft: rgba(13, 107, 99, 0.14);
  --zqlu-border: rgba(29, 27, 24, 0.12);
  --zqlu-danger: #a12424;
  --zqlu-shadow: 0 14px 32px rgba(53, 44, 25, 0.1);
}

.zqlu-home {
  display: grid;
  gap: 1.5rem;
  max-width: 46rem;
  margin: 0 auto;
}

.zqlu-home__intro {
  display: grid;
  gap: 0.85rem;
}

.zqlu-home__title {
  margin: 0;
}

.zqlu-home__lead > *:first-child {
  margin-top: 0;
}

.zqlu-home__lead > *:last-child {
  margin-bottom: 0;
}

.zqlu-playground {
  color: var(--zqlu-ink);
}

.zqlu-playground * {
  box-sizing: border-box;
}

.zqlu-playground.panel {
  backdrop-filter: blur(12px);
  background: var(--zqlu-panel);
  border: 1px solid var(--zqlu-border);
  border-radius: 12px;
  box-shadow: var(--zqlu-shadow);
  padding: 10px 12px;
}

.zqlu-playground .stack {
  display: grid;
  gap: 8px;
}

.zqlu-playground label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--zqlu-muted);
  margin-bottom: 6px;
}

.zqlu-playground .label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.zqlu-playground .label-row label {
  margin-bottom: 0;
}

.zqlu-playground .copy-button {
  border: 1px solid rgba(29, 27, 24, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  color: var(--zqlu-accent-strong);
  padding: 5px 10px;
  font: 600 0.68rem/1 "SFMono-Regular", "Cascadia Code", "Fira Code", Consolas, monospace;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.zqlu-playground .copy-button:hover {
  border-color: rgba(13, 107, 99, 0.4);
  background: rgba(255, 255, 255, 0.96);
  transform: translateY(-1px);
}

.zqlu-playground .copy-button:active {
  transform: translateY(0);
}

.zqlu-playground .copy-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.zqlu-playground textarea {
  width: 100%;
  height: 5.1rem;
  border: 1px solid rgba(29, 27, 24, 0.14);
  border-radius: 0;
  padding: 10px 11px;
  resize: none;
  font: 500 0.75rem/1.28 "SFMono-Regular", "Cascadia Code", "Fira Code", Consolas, monospace;
  color: var(--zqlu-ink);
  background: rgba(255, 255, 255, 0.75);
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
}

.zqlu-playground textarea:focus {
  outline: none;
  border-color: rgba(13, 107, 99, 0.48);
  box-shadow: 0 0 0 4px var(--zqlu-accent-soft);
  transform: translateY(-1px);
}

.zqlu-playground .output {
  height: 3.3rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow-x: hidden;
}

.zqlu-playground .intro {
  margin: 0 0 4px;
  font-size: 0.74rem;
  line-height: 1.3;
  color: var(--zqlu-muted);
}

.zqlu-playground .status {
  margin-top: 6px;
  min-height: 1.1em;
  font-size: 0.74rem;
  color: var(--zqlu-muted);
}

.zqlu-playground .status.error {
  color: var(--zqlu-danger);
}

.zqlu-playground .meta {
  display: grid;
  gap: 6px;
  grid-template-columns: minmax(0, 0.22fr) minmax(0, 0.78fr);
}

.zqlu-playground .card {
  padding: 9px 10px;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(29, 27, 24, 0.08);
}

.zqlu-playground .card h2 {
  margin: 0 0 4px;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--zqlu-muted);
}

.zqlu-playground .card p,
.zqlu-playground .card code {
  margin: 0;
  font-size: 0.78rem;
}

.zqlu-playground #fingerprint {
  white-space: nowrap;
  overflow-wrap: normal;
}

.zqlu-playground .mono {
  font-family: "SFMono-Regular", "Cascadia Code", "Fira Code", Consolas, monospace;
  overflow-wrap: anywhere;
}

@media (max-width: 680px) {
  .zqlu-playground .meta {
    grid-template-columns: 1fr;
  }
}